CN207228475U - A kind of prefabricated profile steel concrete column unit applied to assembling frame - Google Patents

Abstract

The utility model provides a prefabricated steel concrete column unit applied to an assembled frame, comprising a plurality of bottom column units, a plurality of middle column units and a plurality of top column units, all of which are prefabricated components. The upper end of the bottom column unit is provided with an upper column joint. The upper and lower ends of the middle column unit are respectively provided with an upper column joint and a lower column joint, and its middle part is provided with a beam-column connecting node. The lower end of the column unit on the top floor is provided with a lower column joint, and its upper end is a column connection node. These components are assembled on site, avoiding the complicated process of traditional construction in the joint area, and only need to assemble column joints and beam joints outside the joint area, thus greatly improving construction efficiency and engineering quality.

Description

A Prefabricated Steel Concrete Column Unit Applied to Prefabricated Frame

technical field

The utility model relates to the technical field of construction engineering, in particular to a prefabricated steel concrete column unit applied to an assembled frame.

Background technique

The prefabricated structure decomposes the structure into a number of independent component units (such as beams, columns, walls, panels, etc.), each unit is preset in the factory, and connected by a special connection method on site to form a whole. The prefabricated structure has the characteristics of energy saving, environmental protection, fast construction speed and high construction precision. At present, research on the form of prefabricated structures and on-site connection methods has become the most dynamic direction.

Prefabricated frame is one of the most commonly used forms of prefabricated structures. Traditional prefabricated frames mostly use reinforced concrete beams and columns, and the joints of beams and columns are connected by integral post-casting method, which has the following shortcomings:

①Reinforced concrete has low strength, large cross-section and heavy weight, which brings a lot of inconvenience to prefabrication, transportation, hoisting and assembly;

②The internal force at the beam-column joint is relatively large, the stress situation is complicated, there are many steel bars in the joint area, the construction of on-site steel bar binding and concrete pouring is difficult, the construction quality is unstable, and it is difficult to achieve the effect of "equivalent to cast-in-place", so on-site assembly is carried out here , it is difficult to meet the basic requirements of the seismic conceptual design of "strong nodes, weak components";

③Using the integral post-casting assembly method, it is necessary to wait for the concrete poured on site to reach a certain strength before proceeding to the construction of the next process. The technical interval is long, which affects the construction period.

Utility model content

The utility model The utility model provides a prefabricated steel concrete column unit applied to an assembled frame, aiming at solving the problems existing in the prior art.

The technical solution adopted to achieve the purpose of the utility model is as follows, a prefabricated steel concrete column unit applied to a prefabricated frame, characterized in that it includes a prefabricated assembled frame formed by combining several steel concrete columns and steel beams.

The steel concrete column includes a cross-shaped steel column, concrete, longitudinal steel bars in the column, stirrups and connecting short sleeves.

The cross-shaped steel column is configured with 2 to 4 steel corbels. Each steel corbel consists of two corbel flange plates and a corbel web. The two corbel flange plates that make up a steel corbel are horizontal and welded to one side of a cross-shaped steel column. A corbel web is end welded vertically between two steel corbel flange plates. The corbel web has connection holes for bolts to pass through.

A reinforcement cage composed of longitudinal steel bars and stirrups in several columns. A part of the cross-shaped steel column and the steel corbel is in a reinforcement cage. A plurality of connecting short sleeves are welded on the upper and lower corbel flange plates constituting a steel corbel. Part of the longitudinal reinforcement will be broken due to encountering the steel corbel, and the two disconnected ends are respectively fixed in the connecting short sleeves welded by the flange plates of the two corbels. Concrete poured outside the reinforcement cage.

According to different locations, the steel concrete columns are mainly divided into three types: the bottom steel concrete column, the middle steel concrete column and the top steel concrete column.

The bottom of the bottom steel concrete column is fixed to the foundation, and the inner longitudinal steel bars and cross steel columns extend out from the upper end of the concrete. The upper end of the cross-shaped steel column is welded with an upper joint end plate.

The longitudinal reinforcement and the cross-shaped steel column inside the middle-level steel concrete column extend out from the upper and lower ends of the concrete. The upper and lower ends of the cross-shaped steel column are respectively welded with an upper joint end plate and a lower joint end plate.

The longitudinal reinforcement and the cross-shaped steel column inside the top-floor steel concrete column extend out of the lower end of the concrete. The upper and lower ends of the cross-shaped steel column are respectively welded to the cover plate and the lower joint end plate.

The upper joint end plate and the lower joint end plate have connecting holes for bolts to pass through. Exposed longitudinal reinforcement has wire openings.

Further, the cross-shaped steel column includes a cross-section core plate and four side plates. The core board of the cross is perpendicular to the horizontal plane. One side of each side plate is fixed on one of the crosses. The corbel flange plate in the steel corbel is welded to one side of the side plate.

Further, the transverse dimension of the connection between the cross-shaped steel column and the steel corbel becomes larger.

Further, the cross-shaped steel column is provided with a stiffening steel plate at the welding position with the corbel flange plate.

Further, butt welds are used to weld the steel beam flange and the steel corbel flange plate.

Further, the connecting nodes between the columns are located at a height of 1.0-1.5 meters above the floor.

The beneficial effects of the utility model are:

1. The use of steel concrete columns reduces the size of the section, reduces the weight of components, and reduces transportation and hoisting costs.

2. The assembly of columns and columns is located near the middle of the floor where the internal force is small, which is conducive to reducing the requirements for assembly nodes, simplifying the structure of assembly nodes, reducing the difficulty of assembly, and easy to achieve the effect of "equivalent to cast-in-place".

3. The assembly of columns is connected with high-strength bolts and sleeves, reducing on-site steel bar binding and concrete pouring, improving construction speed and reducing environmental pollution.

4. Utilize the strong energy dissipation capacity of steel to increase the ductility of joints and structures, so that the assembled frame of the present invention can be applied to high-intensity earthquake-resistant areas.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the fabricated frame.

Figure 2 is a schematic diagram of the bottom steel concrete column.

Figure 3 is a schematic diagram of the steel concrete column in the middle layer.

Figure 4 is a schematic diagram of the top-floor steel-concrete column.

Figure 5 is a schematic diagram of the assembly of steel concrete columns and steel beams.

Figure 6 is a schematic diagram of the assembly of the upper and lower steel concrete columns.

In the figure: steel concrete column 1 on the bottom floor, steel concrete column 2 on the middle floor and steel concrete column 3 on the top floor. Cross-shaped steel column 101, concrete 102, longitudinal reinforcement inside the column 103, stirrup 104, connecting short sleeve 105, steel corbel 5, corbel flange plate 501, corbel web 502, upper joint end plate 6, stiffening steel plate 7. Lower joint end plate 8, cover plate 9, spliced cover plate 10, beam connection high-strength bolt 11, backing plate 12, weld seam 13, column connection high-strength bolt 14, long sleeve 15, rear stirrup 16, post-casting Concrete17.

Detailed ways

The utility model will be further described below in conjunction with the embodiments, but it should not be understood that the scope of the above subject matter of the utility model is limited to the following embodiments. Without departing from the above-mentioned technical ideas of the present utility model, various replacements and changes made according to common technical knowledge and conventional means in this field shall be included in the protection scope of the present utility model.

A prefabricated steel concrete column unit applied to an assembled frame includes a prefabricated assembled frame formed by combining several steel concrete columns and steel beams 4.

The steel concrete column includes a cross-shaped steel column 101 , concrete 102 , longitudinal steel bars 103 inside the column, stirrups 104 and connecting short sleeves 105 .

The cross-shaped steel column 101 is configured with 2 to 4 steel corbels 5 (4 central columns, 3 corner columns, and 2 side columns). Each steel corbel 5 includes two corbel flange plates 501 and a corbel web 502 . The two corbel flange plates 501 forming a steel corbel 5 are both horizontal and welded to one side of the cross-shaped steel column 101 . A corbel web 502 is vertically end welded between two steel corbel flange plates 501 . The corbel web 502 has connection holes for bolts to pass through. In the embodiment, as shown in FIG. 6 , the cross-shaped steel column 101 includes a core plate with a cross section and four side plates. The core board of the cross is perpendicular to the horizontal plane. One side of each side plate is fixed on one of the crosses. The corbel flange plate 501 in the steel corbel 5 is welded on the side of the side plate (facing away from the core plate).

A reinforcement cage composed of longitudinal steel bars 103 and stirrups 104 in several columns. A part of the cross-shaped steel column 101 and the steel corbel 5 is in a reinforcement cage. A plurality of connecting short sleeves 105 are welded on the upper and lower corbel flange plates 501 of a steel corbel 5 . Part of the longitudinal reinforcement 103 will be disconnected due to encountering the steel corbel 5, and the two disconnected ends are respectively fixed in the connecting short sleeves 105 welded by the upper and lower corbel flange plates 501. Concrete 102 is poured outside the reinforcement cage.

Referring to Figure 1, according to the different locations (relative to the fabricated frame), the steel concrete columns are mainly divided into three types: the bottom steel concrete column 1, the middle steel concrete column 2 and the top steel concrete column 3.

The bottom of the bottom steel concrete column 1 is fixed to the foundation, and the inner longitudinal reinforcement 103 and the cross steel column 101 extend out from the upper end of the concrete 102 . The upper end of the cross-shaped steel column 101 is welded with the upper joint end plate 6 .

The longitudinal steel bars 103 and the cross-shaped steel columns 101 inside the middle steel concrete column 2 extend out from the upper and lower ends of the concrete 102 . The upper and lower ends of the cross-shaped steel column 101 are respectively welded to the upper joint end plate 6 and the lower joint end plate 8 .

The longitudinal steel bars 103 and the cross-shaped steel columns 101 inside the top steel concrete column 3 extend out of the lower end of the concrete 102 . The upper and lower ends of the cross-shaped steel column 101 are respectively welded to the cover plate 9 and the lower joint end plate 8 .

The upper joint end plate 6 and the lower joint end plate 8 have connection holes for bolts to pass through. The exposed longitudinal bars 103 have thread openings.

When assembling:

The upper end of the bottom steel concrete column 1 is connected to the lower end of the middle steel concrete column 2 to form an inter-column connection node. The upper and lower ends of the two middle-level steel concrete columns 2 are connected to form an inter-column connection node. The lower end of the steel concrete column 3 on the top floor is connected to the upper end of the steel concrete column 2 on the middle floor to form an inter-column connection node. Preferably, the connecting nodes between columns are located at a height of 1.0-1.5 meters above the floor.

The connection mode of the inter-column connection node (label II in Fig. 1) is:

1) Clean up the upper end thread opening of each longitudinal steel bar 103 below, fully screw the long sleeve 15 into the thread opening so that the upper end of the long sleeve 15 is not higher than the upper joint end plate 6, and several The annular stirrup 16 is sleeved on the longitudinal reinforcement 103 located below.

2) Hoist the steel concrete column above, make the lower joint end plate 8 and the upper joint end plate 6 overlap, and use high-strength bolts 14 to fix the lower joint end plate 8 and the upper joint end plate 6 .

3) Clean the lower thread opening of each longitudinal steel bar at the top, fine-tune the inner longitudinal bars of the upper and lower end columns, align the upper and lower longitudinal bars 103 one by one, reversely twist the long sleeve 15 in step 1), Make it withdraw from the upper half of the longitudinal reinforcement of the lower end column, screw into the lower part of the longitudinal reinforcement of the upper end column, so that the longitudinal reinforcement 103 on the upper and lower sides is connected one by one by the long sleeve 15.

4) Adjust the spacing of the ring-shaped stirrups 16, bind the ring-shaped stirrups 16 in step 1) to the corresponding longitudinal steel bars 103 to form an inter-column reinforcement cage.

5) Clean up the concrete surfaces of the upper and lower steel concrete columns and roughen them, pour fine stone concrete outside the inter-column reinforcement cages, and wrap them to form post-cast concrete 17.

The steel corbel 5 is connected with the steel beam 4, and forms a connection node between the beam and the column.

Each steel beam 4 includes upper and lower two horizontal steel beam flanges 401 , and a steel beam web 402 vertically welded between the two steel beam flanges 401 . Both ends of the steel beam web 402 have connection holes for bolts to pass through.

The connection mode of the connection node between the beam and the column (label I in Fig. 1) is:

a) Hoist the steel beam 4 to one side of the steel corbel 5, and place a joint cover plate 10 on both sides of the steel beam web 402 and the steel corbel web 502 respectively. Each spliced cover plate 10 has two rows of through holes for bolts to pass through. Several high-strength bolts 11 are used to connect one side of the steel beam web 402 and the spliced cover plate 10, and several high-strength bolts 11 are also used to connect the other side of the steel corbel web 502 and the spliced cover plate 10, so that the steel corbel 5 and the spliced cover plate 10 are connected. Steel beam 4 connection

b) A backing plate 12 is placed at the contact point between each steel beam flange 401 and the steel corbel flange plate 501, and the steel beam flange 401 and the steel corbel flange plate 501 are welded and connected.

Claims (6)

1. A kind of 1. prefabricated profile steel concrete column unit applied to assembling frame, it is characterised in that:Including cross steel column (101), concrete (102), longitudinal reinforcement (103), stirrup (104) and connection short sleeve (105) in column；

   The cross steel column (101) configures 2~4 steel corbels (5)；Each steel corbel (5) includes two bracket flange plates (501) and a bracket web (502)；It is horizontal to form two bracket flange plates (501) of a steel corbel (5), and welds In the side of cross steel column (101)；One bracket web (502) is vertically welded on two steel corbel flange plates by end (501) between；There is the connecting hole passed through for bolt on bracket web (502)；

   The steel reinforcement cage of longitudinal reinforcement (103) and stirrup (104) composition in some columns；The cross steel column (101) and steel corbel (5) a part is in steel reinforcement cage；Form and be welded with upper and lower two bracket flange plates (501) of a steel corbel (5) Some connection short sleeves (105)；Part longitudinal reinforcement (103) can be disconnected because steel corbel (5) is run into, two difference of disconnection It is fixed in the connection short sleeve (105) of two bracket flange plate (501) welding；The outer casting concrete (102) of steel reinforcement cage；

   Different according to location, profile steel concrete column is broadly divided into bottom profile steel concrete column (1), middle level steel reinforced concrete (3) three kinds of column (2) and top layer profile steel concrete column；

   Basis is fixed in the bottom of the bottom profile steel concrete column (1), its internal longitudinal reinforcement (103) and cross steel column (101) upper end of concrete (102) is extended；The upper end welding top connection end plate (6) of cross steel column (101)；

   The internal longitudinal reinforcement (103) of the middle level profile steel concrete column (2) and cross steel column (101) extend concrete (102) upper/lower terminal；Top connection end plate (6) and lower contact end plate is respectively welded in the upper and lower end of cross steel column (101) (8)；

   The internal longitudinal reinforcement (103) of the top layer profile steel concrete column (3) and cross steel column (101) extend concrete (102) lower end；Cover board (9) and lower contact end plate (8) is respectively welded in the upper and lower end of cross steel column (101)；

   The top connection end plate (6) and lower contact end plate (8) have the connecting hole passed through for bolt；Exposed longitudinal reinforcement (103) there is silk mouth.
2. 2. a kind of prefabricated profile steel concrete column unit applied to assembling frame according to claim 1, its feature exist In：The cross steel column (101) includes the core plate and four blocks of side plates that cross section is cross；The core plate of cross is perpendicular to level Face；The side of each block of side plate is fixed on one of cross；Bracket flange plate (501) in steel corbel (5) is welded on side plate Side.
3. 3. a kind of prefabricated profile steel concrete column unit applied to assembling frame according to claim 1, its feature exist In：Cross steel column (101) and the lateral dimension of steel corbel (5) junction become larger.
4. 4. a kind of prefabricated profile steel concrete column unit applied to assembling frame according to claim 1, its feature exist In：The cross steel column (101) is installing stiffened steel plates (7) with bracket flange plate (501) welding position.
5. 5. a kind of prefabricated profile steel concrete column unit applied to assembling frame according to claim 1, its feature exist In：Steel beam flange (401) and steel corbel flange plate (501) are welded to connect using butt weld (13).
6. 6. a kind of prefabricated profile steel concrete column unit applied to assembling frame according to claim 1, its feature exist In：Intercolumniation connecting node is located at 1.0~1.5 meters of eminences above flooring.