Standardized design refers to the design phase, which is aimed at universal products, adopts common conditions, formulates unified standards and models, and carries out a relatively wide range of applicable designs. It is suitable for product designs that are technically mature, economically reasonable, and have sufficient market capacity. The advantages of using standardized design are: ① ensuring design quality, which is conducive to improving engineering quality; ② Can reduce repetitive labor and accelerate design speed; ③ Beneficial for adopting and promoting new technologies; ④ Facilitate the industrialization, assembly, and construction mechanization of component production, improve labor productivity, and accelerate construction progress; ⑤ Beneficial for saving construction materials, reducing project costs, and improving economic benefits..

The integrated design of building structural systems, peripheral protection systems, equipment and pipeline systems, and interior systems is called integrated design. Prefabricated buildings emphasize integrated design, and in the design process, the structural system, peripheral protection system, equipment and pipeline system, and interior system should be comprehensively considered for integrated design. Systematicity and integration are the basic characteristics of prefabricated buildings. Prefabricated buildings are based on complete building products, providing high-performance complete building products. Through the method of system integration, the entire process of design, production, transportation, construction installation, and maintenance is integrated. In prefabricated building design, the design and application of integrated systems have become a development trend. The centralized design of equipment and electrical pipes has advantages over traditional methods. In residential systems, separating long-lived structural systems from short-lived equipment pipeline systems and integrating equipment pipeline wells into public spaces is also a rational trend in residential design, providing the possibility of extending building life through pipeline updates throughout the entire lifecycle of the building. The notice on issuing the “Key Points for Quality and Safety Supervision of Prefabricated Building Construction in Zhejiang Province” aims to promote the high-quality development of new building industrialization in the province, strengthen refined management, improve management systems, and enhance quality and safety. According to the Action Plan for Improving the Development Quality of New Building Industrialization in Zhejiang Province (2023-2027), our department has organized the preparation of the Key Points for Quality and Safety Supervision of Assembled Decoration Projects in Zhejiang Province, which are now issued for reference and implementation by various regions based on their actual situation..

This key point is managed by the Department of Housing and Urban Rural Development of Zhejiang Province, and the technical content is explained by the Hangzhou Construction Engineering Quality and Safety Supervision Station, which is publicly available on our department’s website..

Attachment: (Click on “Read Original Text” in the bottom left corner to download) “Key Points for Quality and Safety Supervision of Assembled Decoration Projects in Zhejiang Province”. pdf.

Recently, the Department of Housing and Urban Rural Development of Zhejiang Province issued a notice on the issuance of the “Key Points for Quality and Safety Supervision of Prefabricated Building Construction in Zhejiang Province” (Zhejian Guanfa [2024] No. 71)..

The main contents of this supervision include: 1. General provisions; 2. Terminology; 3. Quality and safety behavior supervision; 4. Quality supervision of prefabricated construction projects; 5. Safety supervision of prefabricated construction projects; 6. Green construction of prefabricated buildings and occupational health; 7. Information management of prefabricated buildings..

This supervision point applies to the quality and safety supervision work related to the construction, renovation, and expansion of prefabricated buildings within the administrative region of Zhejiang Province. Mainly targeting construction projects that use two common structures, prefabricated concrete structure and prefabricated steel structure, for the upper main structure. Supervision agencies at all levels may conduct supervision, spot checks, and testing on several items in this key point of supervision based on actual circumstances..

The document specifies the quality and safety behavior regulations and sampling methods for construction units, construction units, design units, and supervision units. Is prefabricated construction safe at all? There are many tricks here, how to control them, what precautions are there, and those who don’t understand will never believe it. Prefabricated Construction Quality Standardization Atlas (No.1347) 1279 is full of dry goods! Experience sharing and interpretation of the entire process of creating excellence planning for the Luban Award – South Second Ring Road “Luban Award” Excellence Planning Plan.

1270 300 meter super high-rise project planning+high-quality benchmark engineering – recommended excellent engineering project planning | 256 page ppt downloadable | Shenzhen Bay Innovation and Technology Center project implementation plan.

1248 essence! China Construction Quality Excellence Plan (2022) | 100 pages available for download.

1193 | [Technical Management] China Construction Xinjiang Construction Engineering 2020 Excellent Double Optimization Case Collection | 302 pages | Downloadable.

1285 General Contracting Engineering Technical Bid Template (2023).

1188 | Complete Explanation of Basic Knowledge of Chinese Building Curtain Walls | Page 115 | Downloadable.

1196 | [Quality Management] China Construction Civil Engineering Construction Technology Standards Volume 1 Page 371 | Downloadable.

1276 Steel Structure Data Collection | Technical and Quality Management Data for Steel Structures of Major Companies, Compilation of Standardized Atlas, Construction Plan, Technical Bid, and Electronic Book.

1239 [Technical Management] Construction Plan for Steel Membrane Structure Engineering of a Sports Stadium.

1145 | Complete Collection of Road Engineering Data | Safety Data | Quality Data | Construction Plan | Supervision Tables Complete.

1136 | Construction Quality Acceptance Data Template | Piles, slabs, retaining walls, foundations, and earthwork excavation | Template | Phase 9 | Downloadable. doc.

1159 | Luban Award Excellent Picture Collection (Ground Engineering).

1280 Hefei “South Second Ring Road” Luban Award Welcome Inspection Report PPT (downloadable).

1277 Aviation Investment Building Luban Award Report Materials (downloadable).

1090 | Complete set of materials for the Three Bureau Excellence Project | National Green Engineering | Science and Technology Demonstration Project | High quality Engineering | Three Bureau Cup | Complete set of construction plans | Editable. pptx | Downloadable. doc | Key points for quality and safety supervision of prefabricated building construction announced! Recently, the Zhejiang Provincial Department of Housing and Urban Rural Development issued a notice on the issuance of the “Key Points for Quality and Safety Supervision of Prefabricated Building Construction in Zhejiang Province” (Zhejiang Construction Administration [2024] No. 71), stating that the construction unit bears the first responsibility for quality and safety and the project manager has a lifelong responsibility system..

The main contents of this supervision include: 1. General provisions; 2. Terminology; 3. Quality and safety behavior supervision; 4. Quality supervision of prefabricated construction projects; 5. Safety supervision of prefabricated construction projects; 6. Green construction of prefabricated buildings and occupational health; 7. Information management of prefabricated buildings..

This supervision point applies to the quality and safety supervision work related to the construction, renovation, and expansion of prefabricated buildings within the administrative region of Zhejiang Province. Mainly targeting construction projects that use two common structures, prefabricated concrete structure and prefabricated steel structure, for the upper main structure. Supervision agencies at all levels may conduct supervision, spot checks, and testing on several items in this key point of supervision based on actual circumstances..

The document specifies the quality and safety behavior regulations and sampling methods for construction units, construction units, design units, and supervision units..

3.1.1 The responsible party for the construction of prefabricated building projects shall implement the relevant engineering quality and safety main responsibilities and obligations, and sign the engineering quality and safety main responsibility agreement..

3.1.2 If there are no relevant national, industry, or local regulations or standards for the new materials, technologies, and processes to be used in prefabricated construction projects, the construction unit shall organize industry experts to conduct special technical demonstrations and file them..

3.1.4 Construction, construction, and supervision units shall organize specialized training for their relevant management personnel, technical personnel, and prefabricated component assembly operators..

3.1.5 It is advisable to establish an information management system for prefabricated construction projects. Summary of Policies for Prefabricated Buildings in 2024.

The Beijing Municipal Building Energy Conservation and Carbon Reduction Work Plan and the 14th Five Year Plan for Green Development of Civil Buildings clearly states that by 2025, the proportion of newly constructed prefabricated buildings will reach 55%; Promote ultra-low energy buildings, and by 2025, the cumulative scale of ultra-low energy buildings promoted in the city aims to reach 5 million square meters.

The Housing and Urban Rural Development Commission has issued the “14th Five Year Plan” for the construction industry, which clearly states: to reasonably layout prefabricated buildings, improve industrial chain construction, do a good job in overall layout, build industrial platforms, and increase promotion efforts.

The 14th Five Year Plan for Prefabricated Buildings in Shanghai has been issued, which clarifies that by 2025, through government guidance and market regulation, we will improve the system, technology, production, construction, and supervision of prefabricated buildings that are suitable for Shanghai’s characteristics, making prefabricated buildings the main construction method in the Shanghai area.

The release of the 14th Five Year Plan for Housing and Urban Rural Development emphasizes that by the end of the 14th Five Year Plan, the proportion of newly built green buildings in urban areas will reach 100%, and the proportion of newly built prefabricated buildings will reach 30%.

Rubber Recess Former

The Implementation Opinions on Improving the Quality Assurance System and Enhancing the Quality of Construction Projects have been issued, which clearly states that the concept of green development should be fully reflected, and prefabricated buildings, green buildings, and ultra-low energy buildings should be promoted in a coordinated manner; Highlighting the advantages and characteristics of prefabricated buildings, promoting prefabricated interior decoration, and promoting new construction methods; Carry out demonstration of prefabricated ultra-low energy building projects, pilot the construction of steel structure prefabricated residential buildings, and study and practice the construction of prefabricated rural houses.

The Implementation Plan for the Construction of New Urban Infrastructure in Liaoning Province has been issued, which specifies that by the end of 2025, the proportion of prefabricated buildings in the new construction area in the province will reach 30%.

The policy and technical system for intelligent construction and construction industrialization in the province have been basically established, and the level of construction industrialization, digitization, and intelligence has significantly improved. A group of intelligent construction advantage enterprises have been cultivated to develop new models of rural housing construction. We have a deep understanding of the simple wishes of the Chinese people since ancient times, which condense the people’s beautiful memories of rural areas. Housing safety is closely related to everyone, and the construction quality and safety of self built houses are often difficult to guarantee..

Data shows that since 2000, there have been over 20 publicly reported safety accidents in self built houses, resulting in over 110 deaths. Among them, most of the collapsed houses in rural areas are made of brick and concrete structures..

In fact, in most countries, single family homes, like in rural China, belong to self built houses..

What’s different is that we are still widely using brick and concrete structures. In the traditional construction process, there are common problems such as lack of design drawings, non-standard construction techniques, and uneven material quality. Most of the houses are not designed by anyone, so we either follow the design of others, listen to the simple design of the foreman, or design ourselves. However, lacking professional experience, the houses designed and built are prone to problems of all sizes; All of these may cause hidden risks to the quality and safety of the house. Or you can buy blueprints and hire guerrilla teams for construction. The level of rural construction teams varies, and the houses built are completely different from the design blueprints..

In foreign countries, prefabricated housing has become the mainstream of rural housing construction, replacing red bricks with prefabricated building materials and on-site wet operations with intelligent construction methods, greatly reducing construction time. It also has significant advantages in environmental protection, energy conservation, safety, comfort, and other aspects..

Prefabricated buildings have many advantages, but they are mainly used in urban high-rise buildings in China and have not brought housing upgrades to rural residents. Today, we will help you gain a deeper understanding of prefabricated housing, hoping to be helpful to homeowners who want to build houses. Using intelligent construction to promote the high-quality development of prefabricated buildings is a construction method that is based on factory production, decomposing buildings into standardized components and parts, then producing them in the factory, and finally assembling them on the construction site. This method can greatly improve construction efficiency, reduce construction costs, and also ensure building quality..

We can imagine pre made components such as beams, slabs, columns, and walls as LEGO blocks, and simply assemble them together at the construction site. “Assembly” is not just about “assembly”. After the prefabricated components are transported to the construction site, they will be overlapped and poured with reinforced concrete. This “industrialized” and “industrialized” construction has been widely adopted in Europe, America, and Japan..

#Prefabricated Building # – Building houses like building blocks.

★ What is prefabricated housing, intelligent construction, and new productivity ★.

Prefabricated housing refers to the process of prefabricating some or all components of a residential building in a factory, transporting them to the construction site, and assembling them through reliable connections..

All construction of traditional residential buildings must be completed on the construction site, while prefabricated residential buildings can be produced in factories and installed on the construction site..

For example, your balcony, bay windows, and stairs have all become parts of the factory and need to be integrated in advance. When building the house, they can be directly hung up and assembled..

Even the floor slabs, columns, and beams are pre made in the factory and only need to be installed on the construction site, but this tests accuracy and cannot have any errors..

After the prefabricated stairs, exterior walls, etc. are transported to the construction site, they also need to be overlapped with reinforced concrete, not simply connected. Steel bars run through every structural component such as floor slabs and columns, making the building structure very sturdy. Exploration of Construction Technology for Prefabricated and Prefabricated Buildings.

This article is adapted from the first issue of “China Construction Informatization” in 2024.

The use of prefabricated assembly structure construction can effectively avoid various drawbacks of traditional building construction and improve building quality.

Therefore, this article introduces the advantages of prefabricated assembly structures and explores the key technical points of prefabricated assembly structure construction, for reference by practitioners.

With the continuous growth of the world economy, the demand in the construction industry is increasing, which has raised higher standards for building quality, efficiency, green and long-term sustainability. The construction method of prefabricated prefabricated structures has become a focus of exploration in the construction field.

Prefabricated assembly structure construction technology mainly refers to the construction form of processing prefabricated components in the factory and then transporting the components to the construction site for assembly.

This method is beneficial for improving building quality, reducing construction period, reducing environmental problems, saving resources, and reducing energy consumption. Compared with traditional building construction methods, it has shown many advantages.

The use of prefabricated assembly structure construction methods has achieved significant results internationally and is widely used in developed countries.

In China, the construction method of prefabricated prefabricated structures has also received national policy support, gradually becoming a key path to accelerate the transformation and innovation of the construction industry and achieve green long-term development goals.

Prefabricated components are first processed in the factory, and their processing environment is relatively fixed, allowing for high-quality processing and strict quality control. Compared to cast-in-place forms, factory processing can better ensure product quality, size accuracy, and component performance, thereby improving the overall quality of the building.

When processing prefabricated components in factories, intelligent and information-based tools and technologies can be used to reduce the interference of human factors on product quality, avoid misoperation in the construction process, increase the compliance rate of components, and ensure the safety and stability of engineering quality.

In addition, adopting standardized and modular planning concepts in the construction of prefabricated prefabricated structures can enhance the controllability and collaboration of the construction process.

Standardizing the size and interface of prefabricated components can improve on-site construction efficiency and accuracy, reduce the probability of on-site adjustments and rework, and ensure building quality. [Group News] The production line for prefabricated hollow fixed formwork wall panels at the TUS branch of COSCO Qingjian Prefabricated Building Co., Ltd., a subsidiary of the group, has been successfully put into trial operation. COSCO Qingjian’s annual output of 7 million yuan. The Tsinghua University TUS Prefabricated Building Industrialization Project is located at the intersection of Kangzhuang Road and Sangtian Road in Binhai New Area, covering an area of 100 acres. It is a demonstration factory of the Tsinghua TUS building science and technology system, a major industrial project in Zhejiang Province, and the first mountain sea cooperation “industrial enclave” project with a total investment of 1 billion yuan..

Through the unremitting efforts of the management team of the company’s Binhai factory area, and on the basis of in-depth cooperation with the Institute of Architectural Design and Research at Tsinghua University, the production line of prefabricated hollow fixed formwork wall panels (referred to as hollow wall formwork) at TUS branch has completed equipment trial production on April 15th, and the first batch of production components have officially been taken offline..

This production line is the first one in Zhejiang Province. It uses PLC automatic control and group formwork production to complete the production of two-way hole prefabricated components. The board is poured with concrete in the factory, using standardized and automated production, with a 50% hollow rate. The components have a light weight and low price, achieving a perfect combination of prefabrication and cast-in-place. The construction cost of the product is basically on par with cast-in-place, and the cost and quality advantages of the product will overturn the public’s perception of high cost and poor quality of prefabricated buildings..

The smooth operation of the prefabricated hollow fixed formwork wall panel production line marks a milestone in the further implementation and development of the TUS architectural science system at Tsinghua University in Shaoxing. At the same time, it provides new forms of components for prefabricated construction, and promotes the green transformation and upgrading of the construction industry under the national “dual carbon” strategy, achieving the goal of “improving efficiency, improving quality, reducing labor, and reducing costs”..

Submission | Review of Binhai Factory Area | Ying Senyuan Zhejiang Province has released three documents related to prefabricated decoration, involving design, quality and safety supervision, and construction quality acceptance. To promote the high-quality development of new building industrialization in the province, we will strengthen refined management, improve management systems, and ensure the quality of prefabricated decoration projects. According to the Action Plan for Improving the Development Quality of New Building Industrialization in Zhejiang Province (2023-2027), our department has organized the preparation of the Provisional Regulations on Construction Quality Acceptance of Assembled Decoration Projects in Zhejiang Province, which are now issued for implementation by various regions and enterprises..

This key point is managed by the Department of Housing and Urban Rural Development of Zhejiang Province, and the technical content is explained by the Hangzhou Construction Engineering Quality and Safety Supervision Station, which is publicly available on our department’s website..

Attachment (can be downloaded here): Provisional Regulations on Construction Quality Acceptance of Assembled Decoration Projects in Zhejiang Province. pdf.

To promote the high-quality development of new building industrialization in the province, strengthen prefabricated decoration, and improve the technical support system. According to the Action Plan for Improving the Development Quality of New Building Industrialization in Zhejiang Province (2023-2027), our department has organized the preparation of the Design Guidelines for Prefabricated Interior Decoration, which are now issued for reference and reference by various regions and enterprises..

This key point is managed by the Department of Housing and Urban Rural Development of Zhejiang Province, and the technical content is explained by Zhejiang Architectural Design and Research Institute Co., Ltd. It is also publicly available on our department’s website..

Attachment (can be downloaded here): “Guidelines for Prefabricated Interior Decoration Design”. pdf.

Key points for quality and safety supervision of prefabricated decoration projects in Zhejiang Province.

To promote the high-quality development of new construction industrialization in the province, strengthen refined management, improve management systems, and enhance quality and safety. According to the Action Plan for Improving the Development Quality of New Building Industrialization in Zhejiang Province (2023-2027), our department has organized the preparation of the Key Points for Quality and Safety Supervision of Assembled Decoration Projects in Zhejiang Province, which are now issued for reference and implementation by various regions based on their actual situation. In order to promote the orderly development of green buildings and prefabricated buildings in Yantian District, achieve the planning and development goals of green buildings and prefabricated buildings, and standardize the use and management of green building development funds, the Yantian District Housing and Construction Bureau has solicited opinions on the “Special Support Measures for the Development of Green Buildings and Prefabricated Buildings in Yantian District” in accordance with the “Shenzhen Special Economic Zone Green Building Regulations”, “Shenzhen Engineering Construction Green Innovation Development Special Fund Management Measures”, “Shenzhen Green Building High Quality Development Action Plan (2022-2025)” (Shen Jian She [2022] No. 20) and “Shenzhen Action Plan for Promoting the Industrialization of New Buildings (2023-2025)” (Shen Jian She [2022] No. 18), and “Yantian”. The Measures for Promoting Green Buildings and Prefabricated Buildings in Yantian District (Shen Yan Jian Gui [2023] No. 1) and other relevant laws and regulations, combined with the actual situation of Yantian District, have been revised to form the draft of the Special Support Measures for the Development of Green Buildings and Prefabricated Buildings in Yantian District (Shen Yan Jian Gui [2020] No. 1), Recently, we have publicly solicited opinions from the society..

The draft for soliciting opinions is mainly revised in the following three aspects:.

Revise relevant policy documents at the national, provincial, and municipal levels, supplement newly issued relevant documents by departments at all levels, and delete expired and abolished documents. (Article 1).

1. The Action Plan for Promoting the Development of New Building Industrialization in Shenzhen (2023-2025) (Shen Jian She [2022] No. 18), the Measures for Promoting Green Buildings and Prefabricated Buildings in Yantian District (Shen Yan Jian Gui [2023] No. 1), and relevant laws and regulations have added relevant clauses such as “Intelligent Construction”, “Light Storage Direct Flexible”, “Ultra Low Energy or (Near) Zero Carbon Zero Energy Consumption Buildings”, and “Building Information Modeling (BIM) Application Demonstration Project”. (Article 2, Article 3, Article 4, Article 6, Article 8, and Article 10) [Industry Information] The key points for the development of prefabricated buildings in Wuhan in 2024 are to use prefabricated buildings as carriers, accelerate the coordinated development of new building industrialization and intelligent construction in Wuhan, promote green development of urban and rural construction and the transformation and upgrading of the construction industry, and promote the improvement of building quality. In accordance with the requirements for the development of prefabricated buildings at the national, provincial, and municipal levels and the work tasks determined in the 2024 Government Work Report of Wuhan, this key point is formulated..

（1） Strictly implement the requirements of the Notice on Promoting the Coordinated Development of New Building Industrialization and Intelligent Construction (Wuhan Construction Regulations [2022] No. 2), and all new buildings in key areas of Wuhan should be planned, designed, and constructed in accordance with prefabricated building standards; Government funded affordable housing, government and state-owned enterprise investment projects, and new commercial housing projects with a planned total construction area of 60000 square meters or more in other areas that are independently built should be planned, designed, and constructed in accordance with prefabricated building standards. The “industrial upstairs” project promotes prefabricated construction methods according to local conditions, and municipal infrastructure projects prioritize the use of prefabricated construction methods..

（2） The newly constructed prefabricated building area in the city is not less than 21 million square meters, among which the area of the newly constructed subway tunnel enclosure structure using prefabricated construction method is not less than 1 million square meters. The target tasks for the newly constructed prefabricated building area in each district are detailed in Annex 2..

（3） Vigorously promote the demonstration of prefabricated building projects. There shall be no less than 2 prefabricated building demonstration projects determined by each district..

（4） Strict project approval. In the feasibility study report and preliminary design approval process of government investment construction projects, development, reform and management departments require construction units to conscientiously implement relevant policies and regulations on prefabricated buildings. The housing security and housing management department, in conjunction with the development and reform management department, shall clearly follow the prefabricated standards for independent affordable housing projects invested by the government. The Cost Engineer Branch of this association (responsible units: People’s Government Management Committees, Municipal Development and Reform Commission, and Municipal Housing Management Bureau of each district) organizes a Wenzhou Prefabricated Building Observation Activity to promote the development of prefabricated buildings in Wenzhou, further enabling cost practitioners to understand the production process of prefabricated parts specifications and standards, as well as the precise and meticulous construction technology, and to understand the development and application of prefabricated buildings in our city. On April 18th, the Cost Engineer Branch held a “Wenzhou Prefabricated Building Observation Event” at the base of Wenzhou Zhanyu Construction Industry Technology Co., Ltd. More than 30 cost engineers from the branch participated in the event..

Under the leadership of Sun Di, Vice President of Wenzhou Zhanyu Construction Industry Technology Co., Ltd., everyone visited the finished product samples of prefabricated components such as prefabricated bay windows, prefabricated shear walls, prefabricated stairs, and prefabricated walls at the Zhanyu Construction Industry Technology Co., Ltd. base on site. They entered the workshop to visit the entire production process of prefabricated components and had on-site exchanges on the construction, management, quality, transportation, lifting, and installation operations of prefabricated buildings..

After the observation, Vice President Sun Di gave a special lecture on the introduction of prefabricated buildings, why the country strongly promotes prefabricated buildings, the situation of prefabricated buildings in Wenzhou, and cost analysis related to prefabricated buildings. On the basis of the explanation, everyone had in-depth discussions and exchanges, and everyone expressed that they had gained a lot from this training and observation..

This activity not only broadened our horizons and increased our knowledge through on-site observation and discussion, but also provided cost engineers with a deeper understanding of prefabricated buildings, which has a strong guiding role for future work. Hurry up and register! Let’s go see the application of prefabricated technology in foundation pit support together. The “12306 Action” member inspection activity is hot!.

The monthly member inspection is one of the series of activities of the Association’s brand public welfare service activity – “12306 Action”. The aim is to further strengthen interaction and cooperation among member units, exchange and promote advanced experience in prefabricated building technology, management, and other aspects through visits to enterprises, factories, and deep projects. Since its launch in 2015, this activity has covered more than 150000 people in online and offline public welfare services! Let’s review the exciting moments of some member inspection activities in 2023 together!.

Notice on Holding a Member Inspection Event in April – Visiting and Inspecting the Assembled String Beam Steel Truss Support System of Baolong Water Purification Plant Project.

In order to further strengthen interaction and cooperation among member units, exchange and promote the advanced experience of each unit in prefabricated building technology, management, etc., in accordance with the requirements of the “12306 Action” of the Shenzhen Construction Industrialization Association, a visit to the Baolong Water Purification Plant project to inspect the prefabricated tension beam steel truss support system will be carried out on the afternoon of April 25, 2024 (Thursday). The specific matters are notified as follows:.

（1） Time: April 25th (Thursday) 15:00-17:30.

（2） Location: Baolong Water Purification Plant Project Department (No. 8 Nantong Avenue, Longgang District, Shenzhen).

The project is located in Longhu Park, Baolong Industrial City, Longgang District, Shenzhen. The design scale of the Baolong Water Purification Plant is 100000 meters ³/ D. The foundation pit support adopts the form of drilled cast-in-place piles (interlocking piles)+two internal supports (two supports as a whole, one support in the pre-treatment area)+three-axis mixing pile waterproof curtain. The internal support adopts the prestressed tension string beam steel truss support system..