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The “industrial housing” system mainly adopts the steel frame structure to configure the main model of the building, and the components need to be designed in combination with the “steel pipe bundle combination” mode.

Precast space modular components: space modular components are generally three-dimensional units, including walls, floors and roofs.

In everyone’s impression, precast buildings put the house together like building blocks.

Precast slab components (wall, floor and roof): slab prefabrication is the combination of decomposing the wall, floor and roof of the whole building into plane plates with different functions through structural decomposition, that is, decomposing them into precast slab components, and transporting them to the site for hoisting after prefabrication in the factory.

Steel frame column, steel beam, etc.

The latter mainly refers to all kinds of dry connected frame structures, which are mainly used in conjunction with shear walls and seismic supports.

The plate pin mainly transmits force under the condition of bending along the grain and has high bearing capacity.

Prestressed connection applies prestress through tensioning prestressed tendons to connect precast beams and columns as a whole.

For high-strength bolt connection, tighten the high-strength bolt with a special wrench and apply the specified pre tension to it.

Wooden truss refers to the truss composed of wooden components.

3 wood structure system cast wood structure building refers to the wood structure building that the main wood structure load-bearing components, wood components and parts are precast and produced in the factory and installed on site.

The cast steel structure is mainly composed of beam steel, steel column, steel truss and other components made of section steel and steel plate, and adopts rust removal and rust prevention processes such as silylation, pure manganese phosphating, water washing and drying, galvanizing and so on.

Therefore, pay attention to making its wood grain perpendicular to the splicing joint..

Wuhan Huoshen mountain and Leishen mountain hospitals are well known for their rapid construction of precast container structures.

2.2 main connection mode weld connection: arc welding is mainly used, that is, at the connection of components, the welding rod or welding wire metal placed at the weld is melted by the high temperature generated by the arc, so as to connect the components together.

Bolt connection: the connector includes bolt rod, nut and washer.

Dry connection: it is mainly divided into prestressed connection and mixed connection.

It is an ideal green building material, so it has great advantages in residential buildings.

In the cast steel structure, the types of floor slab mainly include reinforced truss floor bearing plate, composite floor slab and truss reinforced concrete laminated plate.

The stairs can adopt precast steel stairs or precast concrete stairs.

Riveting: except for light steel structure, it is basically no longer used.

It is the main load-bearing structure of wooden roof and wooden tower.

Socket Data Clip

1.1 main precast components: precast floor slab (including precast solid slab, precast hollow slab, etc.), precast beam (including precast solid beam, precast composite beam, etc.), precast wall (including precast solid shear wall, precast hollow wall, etc.), precast column (including precast solid column, precast hollow column), precast staircase (precast stair section, precast rest platform) Other complex special-shaped components (precast bay window, precast exterior wall with bay window, precast corner exterior wall, etc.).

1.3 advantages and disadvantages assembled integral frames mainly include post cast frame joints and pre cast frame joints.

1pc frame system cast concrete frame structure includes cast integral concrete frame structure and other cast concrete frame structures.

Hybrid connection adds ordinary reinforcement on the basis of prestressed connection, and uses its yield to consume energy, forming the connection of prestressed reinforcement and ordinary reinforcement.

They are the components with the highest degree of prefabrication, including waterproof and thermal insulation, exterior decoration and interior decoration, and water and electricity pipes.

Due to the great difficulty in the fabrication, transportation and on-site installation of precast frame nodes, it is rarely used in residential projects at this stage.

The former refers to that all or part of the frame beams and columns are assembled by precast components through reliable connection.

First, the cost of steel structure housing is higher than that of concrete building structure due to various reasons such as scale economy has not been reached; Second, the steel structure manufacturing industry, which is in the middle of the steel structure manufacturing industry chain, is in a weak position of subcontracting, resulting in that the steel structure enterprises have not formed a large scale so far.

2 cast steel structure system cast steel structure is a structure composed of steel materials.

However, at this stage, the proportion of steel structure housing is very low.

At present, the structural system of high-rise cast steel structure buildings has traditional pure frame and frame support system, and new types include container, steel pipe bundle, steel special-shaped column and so on.

1.3 the precast wooden components and the precast wooden components are the most flexible in the construction site.

2.3 advantages and disadvantages steel structure building has the unique advantages of short construction cycle, energy conservation and environmental protection.

So, how many building blocks are there? What does each building block look like? How are building blocks connected to each other? What are the advantages and disadvantages of each method? To this end, we summarize the existing 11 kinds of cast mainstream structural systems, and make a popular description of the main precast components, connection methods, advantages and disadvantages of each system.

1.2 connection mode of precast stairs wet connection: the connection mode of precast beams, columns or T-shaped components connected into an integral frame through cast-in-situ concrete while the joint is connected or anchored by reinforcement.

The pre cast members of the former are connected by post cast concrete at the beam column joints, and the pre cast members are in a shape; The connection node of the latter is located in the middle of the frame column and frame beam.

Container system 2.1 main precast components: precast floor slab, exterior wall slab, stairs, etc.

The cast wood structure building shall comply with the principle of sustainability in the whole life cycle of the building, and shall meet the “six modernizations” requirements of standardized design, industrialized production, cast construction, integrated decoration, information management and intelligent application of cast buildings.

3.2 connection method plate pin connection: use plate-shaped hardwood pin to prevent the relative movement of the spliced components.

Precast steel structure buildings advocate the use of non masonry walls and factory precast wallboards.