1, technical content precast concrete external wall hanging board is a non-load-bearing precast concrete external wall board installed on the main structure, which plays the role of enclosure and decoration. Exterior wall hanging board can be divided into two forms according to the component structure: reinforced concrete exterior wall hanging board and prestressed concrete exterior wall hanging board. According to the joint structure connected with the main structure, it can be divided into two forms: point support connection and line support connection. According to the insulation form, it can be divided into three forms: no insulation, external insulation and interlayer insulation. According to the functional orientation of building exterior wall, it can be divided into enclosure wallboard and decorative wallboard. Various external wall hanging boards can be combined with external decoration, thermal insulation, doors and windows according to engineering needs to form an integrated prefabricated wallboard system. Precast concrete exterior wall hanging board can adopt brick veneer, stone veneer, colored concrete veneer, fair-faced concrete veneer, fair-faced concrete veneer and concrete veneer with decorative patterns on the surface, which can make the building exterior wall have unique expressive force. The factory production of precast concrete external wall hanging panels has the advantages of fast construction speed, good quality and low maintenance cost, which mainly includes the design technology of precast concrete external wall hanging panels (buildings and structures), the processing and manufacturing technology of precast concrete external wall hanging panels, and the installation and construction technology of precast concrete external wall hanging panels. 2. Technical indicators The structural members supporting the precast concrete external wall hanging plate should have sufficient bearing capacity and rigidity. The civil external wall hanging plate only spans one floor and one bay, the thickness is not less than 100mm, and the concrete strength grade is not less than C25. The main technical indicators are as follows: (1) The structural performance should meet the requirements of GB500 10 and GB502 10 of the current national standard Code for Design of Concrete Structures; (3) The thermal insulation performance should meet the requirements of the design and the current industry standard "Civil Building Energy Efficiency Design Standard" JGJ26; (4) The seismic performance should meet the requirements of the current national standards "Technical Specification for Assembled Concrete Structures" (JGJG 120 14) and "Technical Standard for Assembled Concrete Buildings" (GB/T 5 123 1). Flexible joints are used to connect with the main structure, which has good performance of adapting to the inter-story displacement of the structure during earthquake and meets the requirements of the application in the area with seismic fortification intensity of 8 degrees. (5) The combustion performance and fire resistance limit of components shall meet the requirements of the current national standard Code for Fire Protection Design of Buildings (GB500 16). (6) As a building envelope, the product positioning should be consistent with the durability requirements of the main structure, that is, the design service life should not be less than 50 years, and the design service life of decorative surfaces (except paint), embedded parts, connectors and other supporting materials should not be less than 50 years. Other materials, such as waterproof materials and paints, shall have a warranty period of over 65,438+00 years, and shall be maintained and replaced regularly. (7) The waterproof performance and related structures of external wall hanging panels shall conform to the current national standards and the relevant provisions of Section 8.6 of 10 new technology. 3. Scope of Application Precast concrete external wall panels are suitable for external wall engineering of industrial and civil buildings, and can be widely used in concrete frame structures, steel structure public buildings, residential buildings and industrial buildings. 4. Project case National Tennis Center, Olympic shooting range, China Construction Technology Center Experimental Building (Beijing), Softcom Power R&D Building (Beijing), Beijing Changping Light Rail Station, National Library Phase II, Hebei Huailai Canaan Winery, Dalian IBM Office Building, Suzhou Tianshan Factory Building, Weihai Famous Building, Wuhan Qintai Culture and Art Center, Anhui kV Substation, Lhasa Railway Station; Hangzhou Olympic Sports Center Swimming Pool, Yangzhou Sports Park Stadium, Jinan Vanke Jinyu International, Tianjin Vanke Dongli Lake.
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