CN106812235A - A kind of assembled sheet-pile steel structure system - Google Patents

Abstract

The invention relates to an assembled plate-column steel structure system, which belongs to the field of industrialized assembled steel structures. The prefabricated slab-column steel structure system is composed of prefabricated slab-column steel nodes and reinforced concrete slab mechanical connections between the nodes. The steel nodes are composed of column base connections and reinforced concrete slabs, and steel pipe columns are connected with column base flange bolts. In the assembled slab-column steel node of the present invention, the outrigger beam section is destroyed before the reinforced concrete slab, thereby protecting the main structure.

Description

A prefabricated slab-column steel structure system

technical field

This patent relates to an assembled plate-column steel structure system with good ductility and energy consumption, which belongs to the field of industrialized assembled steel structures.

Background technique

The slab-column structure is a building structure in which the load-bearing system is composed of beamless floors and columns. The slab-column structure has the advantages of no beams under the indoor floor, unobstructed and concise space, flexible layout, and can reduce the height of buildings, and has the characteristics of saving construction costs. It has been favored by designers and engineers in engineering and is widely used. Multi-storey factories, warehouses, public buildings, office buildings and residential buildings with large spaces.

Steel structure has good mechanical processing performance, easy to assemble, light weight and high strength. It is most suitable for modularization, standardization, factoryization, assembly and modernization of buildings, and it is also the easiest to realize fire-free, water-free, dust-free and clean-free construction sites. Green building concept from trash. Prefabricated slab-column steel structure, as a new type of structural system, combines the good ductility and energy consumption of steel structures, which is more suitable for structural factory production, on-site assembly, and promotes the industrialization of residential buildings. It also improves the impact of slab-column structures Mechanical mechanism and seismic performance.

The prefabricated slab-column steel structure system should have the following characteristics: ① As a new type of prefabricated steel structure, it enriches the types of steel structure buildings and fills the gap in the steel structure building system without slab-column structures; The I-shaped steel connecting section bolts connecting the beam section and the channel steel are spliced, and a square hole is reserved between the column and the channel steel connection to form an energy-dissipating beam section (column base outrigger beam section), so that the energy-dissipating beam section is destroyed before the plate, realizing The ductile failure of the joint avoids the problem of brittle failure of the traditional slab-column structure system, and plays a role in protecting the main structure; ③The failure of the column base and its outrigger beam section greatly increases the ductility and energy consumption of the overall structure, making the structure It can be applied in moderate earthquake or large earthquake anti-seismic fortified areas without the help of anti-seismic walls; ④ The lateral force resistance is improved at the same time, making it possible for this structural system to be applied in high-rise or even super-high-rise buildings.

Contents of the invention

The invention is an assembled plate-column steel structure system suitable for high-rise and anti-seismic fortification areas.

The technical scheme of the present invention is shown in the accompanying drawings. The assembled slab-column steel structure mainly includes slab-column steel nodes and steel pipe columns, wherein the nodes are composed of column base connections and reinforced concrete slabs.

It is characterized in that it includes a plate-column steel node and a square steel pipe column, wherein the steel node is composed of a column base connection and a reinforced concrete slab; the column base connection includes a column base and a channel steel connection; the column base includes The square steel pipe column and the I-shaped steel outrigger beam section, the I-shaped steel outrigger beam section penetrates through the square steel pipe column wall, and the junction is welded; the channel steel connection includes a channel steel square hole and a tool Shaped steel beam section, the channel steel square hole is welded from the end to the end of four channel steels of the same size, the I-shaped steel beam section passes through the channel steel web, welds and adds stiffeners at the junction; The channel steel connection and the reinforced concrete slab are poured into a whole; the reinforced concrete slab adopts a two-way steel mesh;

The assembled slab-column steel structure is formed by connecting the fabricated slab-column steel nodes and square steel pipe columns with flange bolts at the column bases, and mechanically connecting the nodes with reinforced concrete slabs.

An assembled slab-column steel structure system, characterized in that it includes a reinforced concrete slab (1), a square steel pipe column (2), and a column seat connection (3) connecting the reinforced concrete slab (1) and the square steel pipe column (2) ;

The column base includes an I-shaped steel outrigger beam section (12), a column base square steel tube column (9) and a flange plate (10); the I-shaped steel outrigger beam section (12) passes through the column base square steel tube column (9 ) wall, the junction of the two is welded; the flange plate (10) is welded to the column base square steel pipe column (9);

The channel steel connection includes channel steel, I-shaped steel beam section (5), triangular stiffener (7) and square stiffener (11); four channel steels of the same size are welded two by two to form a channel steel square hole, and the I-shaped steel The beam section (5) passes through the web of the channel steel, and the triangular stiffener (7) and the square stiffener (11) are respectively at the two ends of the junction of the channel steel (4) and the web of the I-shaped steel beam section (5). to the stiffening effect;

The column base is connected by high-strength bolts through the end plate welded on the I-shaped steel outrigger beam section (12) and the end plate welded on the channel steel connected I-shaped steel beam section;

When the prefabricated slab-column steel joint bears horizontal load, the load on the reinforced concrete slab (1) is transferred to the square steel pipe column (2) through the column base connection (3), and then to the ground; the column base connection (3) The I-shaped steel outrigger beam section (12) is destroyed before the reinforced concrete slab (1).

The ductile failure of the final node of the present invention has the function of protecting the main structure.

Description of drawings

Fig. 1 is a three-dimensional diagram of a three-layer fabricated plate-column steel structure;

Fig. 2 is a three-dimensional diagram of a fabricated slab-column steel node;

Fig. 3 is a three-dimensional diagram of the column seat connection of a prefabricated plate-column steel node;

Fig. 4 is a front view of the column base connection of a prefabricated plate-column steel node;

Fig. 5 is a three-dimensional diagram of a column base of a fabricated plate-column steel node;

Fig. 6 is a three-dimensional diagram of channel steel connection of a prefabricated slab-column steel node;

Fig. 7 is a cross-sectional view of a prefabricated slab-column steel node.

detailed description

Below in conjunction with accompanying drawing, the embodiment of this patent is described in detail.

As shown in Figure 1-7, a prefabricated slab-column steel structure system includes the following components:

1—reinforced concrete slab;

2——Square steel pipe column;

3—column base connection;

4 - channel steel;

5——I-shaped steel beam section;

6 - high-strength bolts;

7——triangular stiffener;

8 - end plate;

9——Square steel pipe column with column seat;

10 - flange plate;

11 - square stiffener;

12——I-shaped steel outrigger beam section.

As shown in Figure 1-7, the fabricated slab-column steel structure includes a reinforced concrete slab (1), a square steel pipe column (2), and a column seat connection (3) connecting the reinforced concrete slab (1) and the square steel pipe column (2). ).

The prefabricated slab-column steel joint includes a column base connection (3) and a reinforced concrete slab (1), and the channel steel connection (Fig. 6) of the column base connection (3) and the reinforced concrete slab (1) are factory poured.

Column base connection (3), including column base (Fig. 5) and channel steel connection (Fig. 6), column base (Fig. 5) is connected with The end plate (8) high-strength bolt (6) connected on the I-shaped steel beam section welded on the channel steel connection (Fig. 6).

The column base (Fig. 5) includes the I-shaped steel outrigger beam section (12), the column base square steel pipe column (9) and the flange plate (10); the I-shaped steel outrigger beam section (12) passes through the column base square The wall of the steel pipe column (9) is welded at the junction of the two; the flange plate (10) is welded with the column seat square steel pipe column (9).

Channel steel connection (Figure 6) includes channel steel (4), I-shaped steel beam section (5), triangular stiffener (7) and square stiffener (11); four channel steel (4) of the same size are welded in pairs , to form a square hole in the channel steel, the I-shaped steel beam section (5) passes through the web of the channel steel (4), and the triangular stiffener (7) and square stiffener (11) are respectively connected between the channel steel (4) and the I-shaped steel beam The two ends of the section (5) at the junction of the web play a stiffening role.

When the prefabricated slab-column steel joint bears horizontal load, the load on the reinforced concrete slab (1) is transferred to the square steel pipe column (2) through the column base connection (3), and then to the ground; the column base connection (3) The I-shaped steel outrigger beam section (12) is destroyed before the reinforced concrete slab (1), and finally the node is ductilely destroyed, thereby protecting the main structure.

Claims (2)

1. a kind of assembled sheet-pile steel structure system, it is characterised in that：Including armoured concrete slab (1), quadrate steel pipe column (2), connect Connect column base connection (3) of armoured concrete slab (1) and quadrate steel pipe column (2)；

Column base includes I-steel semi-girder beam section (12), column base quadrate steel pipe column (9) and flanged plate (10)；I-steel semi-girder beam section (12) column base quadrate steel pipe column (9) wall, the welding of both intersections are communicated through；Flanged plate (10) is welded with column base quadrate steel pipe column (9)；

Channel-section steel connection includes channel-section steel, I-steel beam section (5), triangle ribbed stiffener (7) and square ribbed stiffener (11)；Four identical Head and the tail are welded size channel-section steel two-by-two, form channel-section steel square hole, and I-steel beam section (5) is through channel-section steel web, triangle ribbed stiffener (7) With square ribbed stiffener (11) respectively at channel-section steel (4) and the two ends of I-steel beam section (5) web intersection, distortion is played；

Column base is connected in I-steel beam section by the end plate being welded on I-steel semi-girder beam section (12) with channel-section steel is welded on End plate by high-strength bolt connect；

When horizontal loading is born, the load on armoured concrete slab (1) connects (3) and passes assembled sheet-pile steel node by column base It is delivered on quadrate steel pipe column (2), and then passes to underground；I-steel semi-girder beam section (12) on column base connection (3) is mixed prior to reinforcing bar Concrete board (1) is destroyed.

2. a kind of assembled sheet-pile steel structure system according to claim 1, it is characterised in that：Described channel-section steel connection with Armoured concrete slab factory pours integral；Described armoured concrete slab uses two-way concrete slab net.