Composite beam composite joint load bearing structure

Abstract

The application discloses a combined beam combined connecting load-bearing structure and relates to the field of combined beam connecting structures, and aims at solving the problem that the existing combined beam is not provided with a shear connector at the edge position of the flange plate of the concrete slab and the steel beam, the edge position of the flange plate of the concrete slab and the steel beam is prone to being cracked due to the large shear force after long-time use of the combined beam, and the overall structural performance is affected. One side of the lower end of the first connecting plate is provided with an L-shaped connecting plate, first ladder-shaped shear plates are arranged at the middle part and the front and back ends of the middle part of one side of the L-shaped connecting plate, first shear connectors are connected between the first connecting plate and the L-shaped connecting plate, the other side of the lower end of the first connecting plate is provided with an H-shaped steel beam, the upper end of the H-shaped steel beam comprises a steel beam flange plate, a second connecting plate is arranged at the lower end of one side of the steel beam flange plate, and the first connecting plate, the steel beam flange plate and the second connecting plate are connected through second shear connectors.

Description

Technical Field

[0001] This invention relates to the field of composite beam connection structures, specifically a composite beam combined connection load-bearing structure. Background Technology

[0002] A beam made of two different materials or different processes is called a composite beam, also known as a combined beam. Some main beams are made of one material, while the bridge deck connecting the main beams is made of another material. A composite beam is a transverse load-bearing component in which steel beams and concrete slabs are connected as a whole by shear connectors and share the load. It can give full play to the advantages of the tensile strength of steel and the compressive strength of concrete. It has the advantages of high load-bearing capacity, high stiffness, good seismic and dynamic performance, small component cross-sectional size, and convenient construction.

[0003] Currently, composite beams do not have shear-resistant connectors at the edges of the concrete slab and the steel beam flanges. After long-term use, the concrete slab at the edges of the steel beam flanges is prone to cracking due to the large shear force, which affects the overall structural performance. Therefore, there is an urgent need in the market to develop a composite beam combined connection load-bearing structure to help people solve the existing problems. Summary of the Invention

[0004] The purpose of this invention is to provide a composite beam combined connection load-bearing structure to solve the problem mentioned in the background art that the current composite beam does not have shear-resistant connectors at the edge of the flange plate of the concrete slab and the steel beam. After long-term use, the edge of the flange plate of the concrete slab and the steel beam is prone to cracking due to large shear force, which affects the overall structural performance.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a composite beam combined connection load-bearing structure, comprising a first connecting plate, an L-shaped connecting plate provided on one side of the lower end of the first connecting plate, a first trapezoidal shear plate provided at the middle of one side of the L-shaped connecting plate and at both ends of the middle, a first shear connector connected between the first connecting plate and the L-shaped connecting plate, an H-shaped steel beam provided on the other side of the lower end of the first connecting plate, the upper end of the H-shaped steel beam including a steel beam flange plate, a second connecting plate provided at the lower end of one side of the steel beam flange plate, the first connecting plate, the steel beam flange plate and the second connecting plate being connected together by a second shear connector, and a sleeve provided in the middle of both the first shear connector and the second shear connector.

[0006] Preferably, a first circular hole is provided at both the front and rear ends of one side of the middle portion of the first connecting plate, and a second circular hole is provided at both the front and rear ends of the middle portion and the other side of the first connecting plate.

[0007] Preferably, the L-shaped connecting plate has a third circular hole at both the front and rear ends of the middle section, and each of the third circular holes has a first hexagonal groove at its lower end.

[0008] Preferably, a fourth circular hole is provided at both the front and rear ends of the middle sides of the second connecting plate, and a second hexagonal groove is provided at the lower end of each fourth circular hole. The lower end face of the L-shaped connecting plate is fixedly connected to the lower end face of the second connecting plate.

[0009] Preferably, both the first and second shear connectors are provided with anchors at their upper ends, and each anchor has an arc-shaped plate at its upper end. Both the first and second shear connectors have annular baffles at their upper middle parts. The first shear connector has a first threaded end at its lower end, and the second shear connector has a second threaded end at its lower end. High-strength bolts are provided in both the first and second hexagonal grooves. A second trapezoidal shear plate is fixedly connected to both sides of each sleeve.

[0010] Preferably, the first connecting plate and the L-shaped connecting plate are connected and fixed by a first shear connector that passes through the sleeve, the first round hole on the first connecting plate and the third round hole on the L-shaped connecting plate in sequence, so that the first threaded end of the first shear connector is threadedly connected and fixed to the high-strength bolt in the first hexagonal groove.

[0011] Preferably, the first connecting plate, the steel beam flange plate, and the second connecting plate are connected and fixed by a second shear connector that passes sequentially through another sleeve, the second round hole on the first connecting plate, the fifth round hole on the steel beam flange plate, and the fourth round hole on the second connecting plate, so that the second threaded end of the second shear connector is threadedly connected and fixed to the high-strength bolt in the second hexagonal groove.

[0012] A combination method includes the following steps:

[0013] Step 1: Place the first connecting plate on one side of the upper flange plate of the H-beam. Place multiple sleeves with second trapezoidal shear plates on the upper ends of the first and second round holes on the first connecting plate, so that the second trapezoidal shear plates on each sleeve point in the direction of shear force.

[0014] Step 2: Fix one end face of the lower end of the L-shaped connecting plate to one end face of the second connecting plate. After the connection is completed, place the second connecting plate under the flange of the steel beam, so that the L-shaped connecting plate is located on one side of the flange of the steel beam and the upper end of the L-shaped connecting plate is in contact with the lower end of one side of the first connecting plate.

[0015] Step 3: Align the first round hole on the first connecting plate and the third round hole on the L-shaped connecting plate in sequence, and simultaneously align the second round hole on the first connecting plate, the fifth round hole on the steel beam flange plate, and the fourth round hole on the second connecting plate in sequence, and fix high-strength bolts in the first hexagonal groove and the second hexagonal groove;

[0016] Step 4: Pass the first threaded end of the first shear connector through the sleeve, the first round hole on the first connecting plate, and the third round hole on the L-shaped connecting plate in sequence, and connect and fix it with the high-strength bolt in the first hexagonal groove. Make the annular baffle on the first shear connector press tightly against the upper end of the sleeve set at the upper end of the first round hole.

[0017] Step 5: Pass the second threaded end of the second shear connector through another sleeve, the second round hole on the first connecting plate, the fifth round hole on the steel beam flange plate, and the fourth round hole on the second connecting plate in sequence, and fix it with the high-strength bolt in the second hexagonal groove. Then, make the annular baffle on the second shear connector press tightly against the upper end of the sleeve set at the upper end of the second round hole. This completes the installation of the entire connecting load-bearing structure. Multiple such structures are evenly spaced at both ends of the middle part of the steel beam flange plate at the upper end of the H-shaped steel beam.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. In this invention, by setting an L-shaped connecting plate, a first trapezoidal shear plate is set at the middle of one side of the L-shaped connecting plate and at both ends of the middle. The lower end face of the L-shaped connecting plate is fixedly connected to the end face of the second connecting plate. The first connecting plate and the L-shaped connecting plate are connected by the first threaded end of the first shear connector passing through the sleeve, the first round hole on the first connecting plate and the third round hole on the L-shaped connecting plate in sequence, and are threadedly connected and fixed with the high-strength bolt in the first hexagonal groove. After the concrete slab at the upper end of the steel beam flange plate is poured, the shear resistance of the concrete slab and the edge of the steel beam flange plate is increased. This solves the problem that after long-term use, the edge of the concrete slab and the steel beam flange plate is prone to cracking due to large shear force, which affects the overall structural performance.

[0020] 2. In this invention, by setting the first shear connector and the second shear connector, a sleeve is provided in the middle of both the first shear connector and the second shear connector, and a second trapezoidal shear plate is fixedly connected to both sides of each sleeve. After the concrete slab is poured, the first shear connector, the second shear connector and the sleeve are all placed inside the concrete slab, which improves the stability of the connection between the concrete slab and the steel beam flange plate.

[0021] 3. In this invention, through the setting of the first hexagonal groove and the second hexagonal groove, the first threaded end of the first shear connector passes through the sleeve, the first round hole on the first connecting plate and the third round hole on the L-shaped connecting plate in sequence, and is threadedly connected and fixed to the high-strength bolt in the first hexagonal groove. The second threaded end of the second shear connector passes through the other sleeve, the second round hole on the first connecting plate, the fifth round hole on the steel beam flange plate and the fourth round hole on the second connecting plate in sequence, and is threadedly connected and fixed to the high-strength bolt in the second hexagonal groove. After the connection is completed, the high-strength bolts are placed in the first hexagonal groove and the second hexagonal groove respectively to prevent the high-strength bolts from separating from the first threaded end and the second threaded end due to vibration after the casting is completed. Attached Figure Description

[0022] Figure 1 This is a front view of a composite beam combined connection load-bearing structure according to the present invention;

[0023] Figure 2 This is a side view of the present invention;

[0024] Figure 3 This is a main sectional view of the present invention;

[0025] Figure 4 This is a side sectional view of the present invention;

[0026] Figure 5 This is a detailed enlarged view of part A of the present invention.

[0027] In the diagram: 1. First connecting plate; 101. First circular hole; 102. Second circular hole; 2. L-shaped connecting plate; 201. Third circular hole; 202. First hexagonal groove; 203. First trapezoidal shear plate; 3. Second connecting plate; 301. Second hexagonal groove; 302. Fourth circular hole; 4. H-shaped steel beam; 401. Steel beam flange plate; 402. Fifth circular hole; 5. First shear connector; 501. First threaded end; 6. Second shear connector; 601. Second threaded end; 7. Anchor; 8. Arc plate; 9. Annular baffle; 10. Sleeve; 11. Second trapezoidal shear plate; 12. High-strength bolt. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] Please see Figure 1-5The present invention provides an embodiment of a composite beam combined connection load-bearing structure, comprising a first connecting plate 1, with first circular holes 101 at both ends of one side of the middle portion of the first connecting plate 1, and second circular holes 102 at both ends of the middle portion and the other side of the first connecting plate 1. An L-shaped connecting plate 2 is provided on one side of the lower end of the first connecting plate 1, with third circular holes 201 at both ends of the middle portion of the L-shaped connecting plate 2, each third circular hole 201 having a first hexagonal groove 202 at its lower end. First trapezoidal shear plates 203 are provided on one side of the L-shaped connecting plate 2 and at both ends of the middle portion to enhance the shear resistance of the L-shaped connecting plate 2. The first connecting plate 1 and the L-shaped connecting plate... A first shear connector 5 is connected between the two. An H-shaped steel beam 4 is provided on the other side of the lower end of the first connecting plate 1. The upper end of the H-shaped steel beam 4 includes a steel beam flange plate 401. A second connecting plate 3 is provided on the lower end of one side of the steel beam flange plate 401. A fourth round hole 302 is provided at both the front and rear ends of the middle of the second connecting plate 3. A second hexagonal groove 301 is provided at the lower end of each fourth round hole 302. One end face of the lower end of the L-shaped connecting plate 2 is fixedly connected to one end face of the second connecting plate 3. The first connecting plate 1, the steel beam flange plate 401 and the second connecting plate 3 are connected together by the second shear connector 6. A sleeve 10 is provided in the middle of both the first shear connector 5 and the second shear connector 6.

[0030] Furthermore, both the first shear connector 5 and the second shear connector 6 are provided with anchors 7 at their upper ends. Each anchor 7 has an arc-shaped plate 8 at its upper end, providing a force point for the rotation of the first shear connector 5 and the second shear connector 6. Both the first shear connector 5 and the second shear connector 6 have annular baffles 9 at their upper middle sections. The first shear connector 5 has a first threaded end 501 at its lower end, and the second shear connector 6 has a second threaded end 601 at its lower end. High-strength bolts 12 are installed in both the first hexagonal groove 202 and the second hexagonal groove 301 to prevent loosening after the high-strength bolts 12 are placed in the first hexagonal groove 202 and the second hexagonal groove 301 after the fixed connection. Each sleeve 10... Both sides are fixedly connected with second trapezoidal shear plates 11. The first connecting plate 1 and the L-shaped connecting plate 2 are connected by a first shear connector 5 passing through the sleeve 10, the first round hole 101 on the first connecting plate 1 and the third round hole 201 on the L-shaped connecting plate 2 in sequence, so that the first threaded end 501 on the first shear connector 5 is threadedly connected and fixed to the high-strength bolt 12 in the first hexagonal groove 202. The first connecting plate 1 and the L-shaped connecting plate 2 are connected by a first shear connector 5 passing through the sleeve 10, the first round hole 101 on the first connecting plate 1 and the third round hole 201 on the L-shaped connecting plate 2 in sequence, so that the first threaded end 501 on the first shear connector 5 is threadedly connected and fixed to the high-strength bolt 12 in the first hexagonal groove 202.

[0031] A combination method includes the following steps:

[0032] Step 1: Place the first connecting plate 1 on one side of the upper steel beam flange plate 401 of the H-beam 4, and place multiple sleeves 10 connected with second trapezoidal shear plates 11 on the upper end of the first round hole 101 and the second round hole 102 on the first connecting plate 1, so that the second trapezoidal shear plates 11 on each sleeve 10 point in the direction of shear force.

[0033] Step 2: Fix one end face of the lower end of the L-shaped connecting plate 2 to one end face of the second connecting plate 3. After the connection is completed, place the second connecting plate 3 at the lower end of the steel beam flange plate 401, so that the L-shaped connecting plate 2 is located on one side of the steel beam flange plate 401 and the upper end of the L-shaped connecting plate 2 is attached to the lower end of one side of the first connecting plate 1.

[0034] Step 3: Align the first round hole 101 on the first connecting plate 1 and the third round hole 201 on the L-shaped connecting plate 2 in sequence. Simultaneously align the second round hole 102 on the first connecting plate 1, the fifth round hole 402 on the steel beam flange plate 401, and the fourth round hole 302 on the second connecting plate 3 in sequence. Fix high-strength bolts 12 in the first hexagonal groove 202 and the second hexagonal groove 301.

[0035] Step 4: Pass the first threaded end 501 of the first shear connector 5 through the sleeve 10, the first round hole 101 on the first connecting plate 1 and the third round hole 201 on the L-shaped connecting plate 2 in sequence, and thread it to the high-strength bolt 12 in the first hexagonal groove 202 for fixation. Also, make the annular baffle 9 on the first shear connector 5 press tightly against the upper end of the sleeve 10 set at the upper end of the first round hole 101.

[0036] Step 5: Pass the second threaded end 601 of the second shear connector 6 through the other sleeve 10, the second round hole 102 on the first connecting plate 1, the fifth round hole 402 on the steel beam flange plate 401, and the fourth round hole 302 on the second connecting plate 3 in sequence, and connect and fix it with the high-strength bolt 12 in the second hexagonal groove 301. Make the annular baffle 9 on the second shear connector 6 press tightly against the upper end of the sleeve 10 set at the upper end of the second round hole 102. The entire connecting load-bearing structure is then installed. The entire connecting load-bearing structure has multiple pieces of the same spacing at both ends of the middle part of the steel beam flange plate 401 at the upper end of the H-shaped steel beam 4.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A composite beam combined connection load-bearing structure, comprising a first connecting plate (1), characterized in that: An L-shaped connecting plate (2) is provided on one side of the lower end of the first connecting plate (1). A first trapezoidal shear plate (203) is provided on the middle part of one side of the L-shaped connecting plate (2) and at both ends of the middle part. A first shear connector (5) is connected between the first connecting plate (1) and the L-shaped connecting plate (2). An H-shaped steel beam (4) is provided on the other side of the lower end of the first connecting plate (1). The upper end of the H-shaped steel beam (4) includes a steel beam flange plate (401). A second connecting plate (3) is provided on the lower end of one side of the steel beam flange plate (401). The first connecting plate (1), the steel beam flange plate (401), and the second connecting plate (3) are connected together by a second shear connector (6). The middle parts of the first shear connector (5) and the second shear connector (6) are... A sleeve (10) is provided. A first circular hole (101) is provided at both the front and rear ends of one side of the middle portion of the first connecting plate (1). A second circular hole (102) is provided at both the front and rear ends of the middle portion and the other side of the first connecting plate (1). A third circular hole (201) is provided at both the front and rear ends of the middle portion of the L-shaped connecting plate (2). A first hexagonal groove (202) is provided at the lower end of each third circular hole (201). A fourth circular hole (302) is provided at both the front and rear ends of both sides of the middle portion of the second connecting plate (3). A second hexagonal groove (301) is provided at the lower end of each fourth circular hole (302). One end face of the lower end of the L-shaped connecting plate (2) is fixedly connected to one end face of the second connecting plate (3). The first shear connector (5) and the second... Anchors (7) are provided at the upper ends of the two shear connectors (6), and arc plates (8) are provided at the upper ends of the anchors (7). Ring baffles (9) are provided at the upper middle parts of the first shear connector (5) and the second shear connector (6). A first threaded end (501) is provided at the lower end of the first shear connector (5), and a second threaded end (601) is provided at the lower end of the second shear connector (6). High-strength bolts (12) are provided in the first hexagonal groove (202) and the second hexagonal groove (301). A second trapezoidal shear plate (11) is fixedly connected to both sides of each sleeve (10). The first connecting plate (1) and the L-shaped connecting plate (2) are connected by the first shear connector (5) passing sequentially through the sleeve (10) and the second shear connector (2). The first circular hole (101) on the connecting plate (1) and the third circular hole (201) on the L-shaped connecting plate (2) make the first threaded end (501) on the first shear connector (5) threadedly connected and fixed to the high-strength bolt (12) in the first hexagonal groove (202). The first connecting plate (1), the steel beam flange plate (401) and the second connecting plate (3) are connected by the second shear connector (6) passing through another sleeve (10), the second circular hole (102) on the first connecting plate (1), the fifth circular hole (402) on the steel beam flange plate (401) and the fourth circular hole (302) on the second connecting plate (3) in sequence, so that the second threaded end (601) on the second shear connector (6) is threadedly connected and fixed to the high-strength bolt (12) in the second hexagonal groove (301).

2. A combination method, based on the composite beam combined connection load-bearing structure of claim 1, characterized in that, Includes the following steps: Step 1: Place the first connecting plate (1) on one side of the upper steel beam flange plate (401) of the H-beam (4), and place multiple sleeves (10) connected with second trapezoidal shear plates (11) on the upper ends of the first round hole (101) and the second round hole (102) on the first connecting plate (1), so that the second trapezoidal shear plates (11) on each sleeve (10) point in the direction of shear force; Step 2: Fix one end face of the lower end of the L-shaped connecting plate (2) to one end face of the second connecting plate (3). After the connection is completed, place the second connecting plate (3) at the lower end of the steel beam flange plate (401) so that the L-shaped connecting plate (2) is located on one side of the steel beam flange plate (401) and the upper end of the L-shaped connecting plate (2) is attached to the lower end of one side of the first connecting plate (1). Step 3: Align the first round hole (101) on the first connecting plate (1) and the third round hole (201) on the L-shaped connecting plate (2) in sequence, and simultaneously align the second round hole (102) on the first connecting plate (1), the fifth round hole (402) on the steel beam flange plate (401) and the fourth round hole (302) on the second connecting plate (3) in sequence, and fix high-strength bolts (12) in the first hexagonal groove (202) and the second hexagonal groove (301); Step 4: Pass the first threaded end (501) of the first shear connector (5) through the sleeve (10), the first round hole (101) on the first connecting plate (1) and the third round hole (201) on the L-shaped connecting plate (2) in sequence, and thread it to the high-strength bolt (12) in the first hexagonal groove (202) for fixation. Also, make the annular baffle (9) on the first shear connector (5) press tightly against the upper end of the sleeve (10) set at the upper end of the first round hole (101). Step 5: Pass the second threaded end (601) of the second shear connector (6) through the other sleeve (10), the second round hole (102) on the first connecting plate (1), the fifth round hole (402) on the steel beam flange plate (401), and the fourth round hole (302) on the second connecting plate (3) in sequence, and thread it to the high-strength bolt (12) in the second hexagonal groove (301) for fixation. Make the annular baffle (9) on the second shear connector (6) press tightly against the upper end of the sleeve (10) set at the upper end of the second round hole (102). The entire connection load-bearing structure can be installed. The entire connection load-bearing structure has multiple equal-spaced installations at both ends of the middle part of the steel beam flange plate (401) at the upper end of the H-shaped steel beam (4).

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