[Focus] The first demonstration project of national “13th Five-Year Plan” precast building major special achievements was settled in Wuhan
The total construction area is 295900 square meters, and consists of Phase III, Phase IV and Phase V of Tongxin Huayuan Reconstruction Community.
CSCEC PPEFF system This system is a new type of post-tensioned partially bonded prestressed precast concrete frame system with the characteristics of rapid assembly similar to steel frame.
The project is a major research and development achievement of the “efficient construction” project of the “13th Five-Year Plan” national key research and development plan – the rapid assembly framework system of China Construction (“China Construction PPEF system”) The first demonstration application of.
The results show that CSCEC’s PPEFF system has high stiffness and bearing capacity under normal use and small earthquakes, and has good energy consumption, low damage, good self-resetting and easy repair under seismic fortification; The ductility and collapse resistance of the structure are good under strong earthquake.
The overall prefabrication rate is 36.1%, and the assembly rate is 70%, which is about 30% shorter than the traditional construction method.
The staff took a group photo of Zhang Kun, the vice chairman of China Construction Group Association for Science and Technology, the deputy general manager and chief engineer of China Construction Third Engineering Bureau, and the secretary general of the Construction Industrialization Professional Committee of China Construction Group Association for Science and Technology Guo Haishan, the head of the “efficient construction” project of the national key research and development plan, and more than 70 representatives of domestic famous universities, research institutes, design institutes, and construction enterprises participated in the demonstration and observation.
The project uses elastic prestressed steel strands to resist vibration damage by overcoming rigidity with flexibility.
Phase IV rendering of Tongxin Huayuan Zoumaling Tongxin Huayuan Reconstruction Community Project is located in Zoumaling Street, Dongxihu District, Wuhan.
Precast components are used for columns, beams and floors, which only need to be hoisted on site, effectively saving time; The dry-type connection is adopted for the beam-column joints, which greatly reduces the on-site wet operation, facilitates the construction and improves the efficiency.
On January 23 this year, the large-scale full-scale frame structure experiment of CSCEC’s PPEFF system was successfully completed in the large-scale structure laboratory of China Construction Technology Center.
It has high strength and toughness, like an enlarged version of Lego building blocks.
Since the production of components is completed in the factory, only on-site installation is required, the project will reduce the labor consumption by more than 30%, construction waste by more than 50%, and the input of on-site auxiliary materials by more than 50%.
The third and fifth phases of the project are constructed in the traditional way, and the fourth phase is constructed in the precast way.
As the first precast residential area in Dongxihu District, the project will provide more than 2100 housing units for residents of Dongxihu District after completion, focus on solving the problem of people’s relocation in Zoumaling District, greatly improve the living environment in the district, promote the comprehensive, coordinated and sustainable development of urban construction, improve the quality of the city, and play a leading and exemplary role in the construction of precast residential buildings in Wuhan.
The project is under the general contracting of China Construction Third Bureau Green Investment Corporation and the construction of the first company.
The successful application of this system makes the project have three major characteristics compared with traditional projects: “efficient construction”, “green energy saving” and “safe earthquake resistance”.
The Third Construction Bureau of China dare to be the first in the world for the fourth phase of lifting delay photography of Tongxin Huayuan.
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On May 29, the “13th Five-Year Plan” National Key R&D Plan Green Building and Construction Industrialization Key Special Demonstration Project – Phase IV Project of Wuhan Tongxin Huayuan Residential Area of China Construction Third Engineering Bureau held a demonstration and observation meeting, which was hosted by the Professional Committee of Construction Industrialization of China Construction Group Association for Science and Technology, the National Key R&D Plan “Efficient Construction” project, and undertaken by the Green Investment Company of China Construction Third Engineering Bureau.
