The types of fabricated shear wall structure system include assembled integral shear wall structure, laminated plate shear wall structure and multi-storey fabricated shear wall structure.
Through relevant tests, many domestic universities and scholars have compared and analyzed the basic mechanical properties and seismic performance of the prefabricated integral concrete shear wall structure system and the traditional cast-in-place structure system, such as bearing capacity, deformation, stiffness and energy dissipation capacity.
3) The structure is reliable and the seismic performance is good.
The structure system has the following types: 1 Prefabricated shear wall structural system prefabricated integral concrete shear wall structure is a new structural system formed by introducing foreign advanced production technology and improvement (i.e.
Prefabricated concrete structure system type prefabricated concrete structure system is one of the effective ways to realize building industrialization.
In this system, wallboard (internal and external walls), stairs, balconies, structural columns and floors can all be prefabricated in the factory, and the prefabrication rate can be guaranteed to a greater extent.
The structure is generally composed of prefabricated columns, prefabricated beams, prefabricated floors, prefabricated stairs and other structural components.
After on-site installation, concrete is poured between the two-layer slabs.
With clear structural force transmission path, high assembly efficiency and less cast-in-situ wet operation, it is the most suitable structural form for prefabrication and assembly.
The vertical and horizontal members are made of cast-in-situ concrete Factory prefabrication, good molding quality; The components are cured by industrialized steam, which avoids the waste of water resources, and the strength of components is effectively guaranteed; The reinforcement has been embedded in the prefabricated components, reducing the use of formwork and reinforcement on the construction site, and effectively reducing the number of on-site construction; The amount of on-site concrete pouring is reduced, the generation of construction waste is reduced, and the environmental pollution is reduced.
Fabricated frame shear wall structure system fabricated frame shear wall structure is based on the fabricated frame structure, which arranges shear walls to divide space and increase the lateral stiffness of the structure.
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2) building materials can be used more reasonably, components are prefabricated in the factory, and most of the on-site construction adopts the hoisting construction method for assembly, which greatly reduces the wet operation, and the investment of formwork, timber, scaffold and other building materials makes it easier to use Use less.
It is mainly used in factories, warehouses, shopping malls, parking lots, office buildings, teaching buildings, medical buildings, business buildings and other buildings that need open space.
Among them, composite plate shear wall structure precast wallboard (usually thin plate) it is composed of two-layer precast slabs and lattice beam reinforcement in the middle of the precast slab.
The traditional cast-in-situ concrete structure not only has a low level of industrialization, but also produces energy loss, construction waste and sewage discharge, which is contrary to the development concept of energy conservation, environmental protection and green development in China.
The prefabricated concrete structure adopts component standardized design, industrialized production and on-site mechanized construction, which is in line with the construction mode of building industrialization, reduces the generation of construction waste and saves energy and resources.
The system has the following characteristics: 1) high prefabrication rate.
newprecastconcrete, referred to as NPC system), the structural system adopts the equivalent cast-in-situ design method proposed by American ACI Association.
The shear wall is constructed by cast-in-situ or precast, which combines the fabricated shear wall structure with the fabricated frame…
4) The degree of mechanization is high and the forming quality of components is good.
In the assembled integral shear wall structure system, the vertical components such as shear wall and structural column are deeply divided, prefabricated in factory and mechanically assembled on site; The connection joints of vertical members adopt the connection mode of the combination of grout and grouting sleeve; The floor slab, beam and other horizontal members adopt the form of superimposed cast-in-place, and the connection between horizontal members and vertical members and the connection between horizontal members adopt the connection mode of reserved reinforcement superimposed cast-in-place concrete, so as to form a structural whole whose overall performance is basically equal to that of cast-in-place.
It is concluded that the basic mechanical properties and seismic performance of the two structural systems are similar.
The structural sample is generally composed of precast columns, precast beams, precast floors, precast stairs and other structural components.
Most components are prefabricated by steel molds in the factory, and the quality appearance, verticality and flatness are effectively guaranteed; At the same time, a water stop groove can be reserved at the window at one time to avoid the hidden danger of window leakage in the later stage.
Prefabricated frame structure system prefabricated frame structure system is divided into three types, which is developed from the traditional cast-in-situ concrete frame structure.
The maximum applicable height of assembled integral shear wall structure can reach 150m, and the prefabrication rate is higher than that of laminated plate shear wall structure and multi-storey fabricated shear wall structure, with remarkable environmental benefits.
The structural system has good integrity, so it has good seismic performance; The internal space layout of frame structure is flexible, which is very suitable for public buildings.
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Due to the thin two-layer precast slab of the precast wall slab, the structural system is easy to cause damage during construction, low prefabrication rate, more on-site wet operations, and no significant environmental benefit.
In recent years, it has also been gradually applied to residential buildings and other civil buildings.
The multi-layer fabricated shear wall structure is the most suitable and high The degree is only 20m, and the land saving benefit is not significant, which is not suitable for China with a large population.
The vertical bearing and horizontal lateral force resisting system of the structure is composed of precast concrete shear wall panel members and cast-in-situ concrete shear wall, and a reinforced concrete shear wall structural system is formed through integral connection.
Prefabricated integral shear wall structure is a new building system suitable for the development of building industrialization in China.
Structural features the prefabricated monolithic concrete shear wall structure system meets the needs of the development of China’s building industrialization, meets the development concept of energy conservation and emission reduction, and has the advantages of cast-in-situ monolithic structure and prefabricated fabricated structure.
Prefabricated concrete structure system is the product of the times when the country vigorously develops building industrialization.
