According to the national Assessment Standard for Fabricated Buildings (GB/T51129-2017), the assembly rate of this project is 66.6%, which belongs to Class A precast buildings| The precast concrete components used in the Jinfeng New City Design Drawing Project cover 15 categories and nearly 200 types.

The precast building components are produced in the prefabrication factory.

The project quality is effectively improved and the construction cost is reduced| In terms of achievement transformation of building materials component codes, the project has compiled and participated in the compilation of 9 local standards, obtained 28 patents (11 invention patents, 17 utility model patents), completed 7 project identification work of Sichuan Provincial Department of Housing and Urban Rural Development (6 identification conclusions are leading in China, 1 is international advanced level), and obtained 13 provincial construction methods in Sichuan Province.

The precast building is energy-saving and environment-friendly, saving about 50% of water, about 80% of wood formwork, more than 80% of construction waste, and more than 70% of dust..

The Zhan Tianyou Award of China Civil Engineering, the Gold Award of Excellent Residential Quarter, is selected once a year.

It saves considerable labor costs and improves labor productivity.

The total number of precast concrete components used is 83,818, with more than 63,000 cubic meters.

During the production process, the temperature, humidity and other conditions can be controlled, and the quality of the components can be more easily guaranteed.

“Although this technology was introduced from abroad, in fact, many ancient buildings in China are precast buildings,” said Wang Lin, an architect.

It was started at the end of 2015 and completed and delivered in 2018.

All of them are projects with high technical difficulties in production and construction nationwide, and 23 residential buildings are constructed at the same time, with higher requirements and greater difficulties| At the same time, BIM technology with model accuracy above LOD400 (BIM is the abbreviation of building information model, and the accuracy of information model is divided into five levels, of which LOD500 is the most precise level), component embedded RFID information chip technology (commonly known as electronic tag technology), assembly construction technology and other intelligent construction means are applied for the first time in the project to manage the entire construction process in an information mode.

Traditional construction is mostly carried out in the open air and at heights, which has great potential safety hazards.

After the components of precast buildings are transported to the site, professional installation teams strictly follow the process for assembly, which greatly improves the project quality and reduces the potential safety hazards.

In fact, in the Neolithic Age 7000 years ago, our ancestors began to use tenon mortise structures, which already contains the mode and wisdom.” | tenon mortise structures “Of course, a building is far more than that simple,” Wang Lin continued, “Beams, slabs, columns, etc.

The traditional on-site construction is limited by the uneven quality of workers, and quality accidents occur from time to time.

Reduce labor costs.

“We always think that precast buildings originated in the West.

Lifting Clutches

Energy conservation and environmental protection, reduce pollution.

Therefore, precast buildings do not only involve the assembly of structures, but also involve the assembly or coordination of many other professional issues, which is a very complex and systematic project.” What are the advantages of precast buildings over traditional buildings? Ensure the project quality.

The traditional on-site pouring construction method has low resource and energy utilization efficiency, large construction waste discharge, and serious dust and noise pollution.

are only structural parts of a building, equivalent to the skeleton of a person.

Improve productivity.

As precast buildings are constructed in prefabrication plants, on-site assembly construction is highly mechanized, reducing the number of on-site construction and management personnel by nearly 10 times.

It requires that the award-winning projects have high comprehensive quality, highlight the application and innovation of science and technology, can represent the highest level of housing construction in China, and are “little gold men” in China’s civil engineering field.

The construction industry is short of labor force, technicians and costs, which makes it difficult to continue the traditional construction methods.

In October this year, under the guidance of the Municipal Bureau of Housing and Urban Rural Development, the Jinfeng New City project undertaken by Chengdu Construction Engineering Group won the “Golden Award for Excellent Residential Quarter of the Zhan Tianyou Award of China Civil Engineering in 2020”, and 33 projects nationwide won this award.

The award-winning Jinfeng New City project is located in Dafeng Street, Xindu District, Chengdu, with a total floor area of 523800 square meters.

The Jinfeng New Town project reflects the innovation and progressiveness of the project in terms of scientific and technological innovation, patent invention and achievement transformation, and has significant creativity and high scientific and technological content in design, construction and management.

Why won the prize? As the first affordable housing project constructed in a precast way in Chengdu and the first batch of green construction demonstration projects in Sichuan Province, Jinfeng New City was also the largest and most technologically advanced precast affordable housing project in China at that time.

Reduce potential safety hazards.

What is precast building? Precast precast building refers to a building that transfers a large number of on-site operations in the traditional construction mode to the factory and workshop, processes and manufactures building components and accessories (this is precast) in the factory, such as floor slabs, wallboards, stairs, balconies, etc., transports them to the construction site, and assembles and installs them on the site through reliable connection| What does the precast component yard mean? It means that the cast components can be directly assembled on the construction site, just like “building blocks”.

This project is the first demonstration project of high-rise residential buildings with high assembly rate in Chengdu, and also the largest and most technologically advanced precast affordable housing project in China at that time.

A fully functional building is also inseparable from the enclosure system, equivalent to human skin; equipment pipeline system, equivalent to blood, and so on.

The precast building components are produced in batches by the prefabrication factory using steel formwork, reducing the number of scaffolding and formwork, so the production cost is relatively low, especially when the components are produced in a more complex form, the advantages are more obvious; At the same time, the corresponding construction process is omitted, and the time utilization rate is improved.