High-stability steel concrete composite beam

Abstract

The utility model discloses a high-stability steel concrete composite beam which comprises a U-shaped main beam body serving as an installation carrier and an arch-shaped supporting beam located in the U-shaped main beam body, a pouring groove is formed in the top of the U-shaped main beam body, and a plurality of sets of fixing columns are symmetrically and evenly arranged at the two ends in the pouring groove. And a steel bar is mounted between the two opposite groups of fixing columns. A plurality of groups of straightened reinforcing steel bars are longitudinally arranged in the pouring groove, and the strip-shaped supporting seats for supporting the reinforcing steel bars are uniformly arranged in the pouring groove, so that the stability of the reinforcing steel bars in the pouring groove in the process of pouring the first concrete layer is improved; furthermore, the bearing capacity of the top of the whole U-shaped main beam body after the first concrete layer is completely solidified is improved, and the plurality of groups of transversely arranged strip-shaped supporting seats can also ensure that the top of the U-shaped main beam body still has higher bearing capacity after the pouring groove is formed, so that even if the whole steel-concrete composite beam is longer, the U-shaped main beam body can still have higher bearing capacity; and in the stress state, the high stability is still achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated beams, in particular to a steel-concrete composite beam with high stability. Background Art

[0002] The use of prefabricated installation construction methods is a way to improve bridge quality, speed up construction progress, and save construction costs. The steel-concrete composite structure in prefabricated components has become the first choice for urban bridges because of its light hoisting weight, low beam height, and beautiful appearance. The steel-concrete composite structure is a performance-optimized structural form developed based on steel structure and concrete structure. Through reasonable design, this structural form can better exert the material properties of steel tensile strength and concrete compressive strength, improve material utilization efficiency, and facilitate construction. It has gradually gained attention in bridges and civil engineering.

[0003] Existing steel-concrete composite beams usually have concrete piles poured at both ends of the main beam to improve the stability of the main beam installation. However, when the main beam span is large, the middle part of the main beam is subjected to a large downward stress, which is very prone to fracture, and cannot effectively improve the stability and safety of the long main beam's own structural stress. At the same time, the gain effect of a single reinforcement structure that strengthens the stability of the main beam itself is also very limited, and it is impossible to guarantee that the main beam itself has a high degree of safety before and after installation, and it is also impossible to provide a high degree of stability guarantee. Utility Model Content

[0004] The utility model aims to provide a high-stability steel-concrete composite beam to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-stability steel-concrete composite beam, comprising a U-shaped main beam body as a mounting carrier and an arched support beam located inside the U-shaped main beam body, a pouring groove is opened on the top of the U-shaped main beam body, and a plurality of groups of fixing columns are symmetrically and evenly arranged at both ends of the inner side of the pouring groove, and steel bars are installed between the two groups of fixing columns, and one end of the fixing column away from the U-shaped main beam body extends to the outside of the U-shaped main beam body and is threadedly provided with a fixing nut, and a plurality of groups of nuts that cooperate with the steel bars are evenly arranged on the inner bottom of the pouring groove. A strip support seat, five rows of first through holes are evenly arranged at both ends of the bottom of the grouting trough, five groups of lower pressure plates are symmetrically arranged at both ends inside the grouting trough, and the lower pressure plates are located above the steel bars, four groups of connecting rods are evenly installed at the bottom of the lower pressure plates, the bottom ends of the connecting rods pass through the first through holes and are fixedly connected to the top of the arched support beam through connecting pieces, fixing components that cooperate with the arched support beam are symmetrically installed at the bottom of both ends of the U-shaped main beam body, a reinforcement component is arranged at the middle position inside the U-shaped main beam body, and a first concrete layer is cast inside the grouting trough.

[0006] Preferably, the fixing assembly includes a U-shaped cross bar, which is provided with two groups, and the two groups of U-shaped cross bars are respectively located at the bottom of the two ends of the U-shaped main beam body, and the two ends of the arched support beam extend to the interior of the two groups of U-shaped cross bars respectively, and several groups of second through holes are symmetrically and evenly opened at both ends of the arched support beam, and several groups of third through holes corresponding to the positions of the second through holes are symmetrically opened at both ends of the U-shaped cross bar, and several groups of connecting bolts are evenly arranged at one end of the U-shaped cross bar, and the tail ends of the connecting bolts pass through the second through hole and the two groups of third through holes and are threadedly provided with connecting nuts, and a second concrete layer is cast inside the U-shaped cross bar.

[0007] Preferably, the reinforcement assembly includes a supporting beam, which is located in the middle position inside the U-shaped main beam, and two sides of the supporting beam are fixedly connected to the inner two sides of the U-shaped main beam, and four groups of telescopic rods are evenly installed on the top of the supporting beam, and the top of the telescopic rod passes through the arched support beam and is fixedly connected to the middle position of the top of the U-shaped main beam, a compression spring is provided on the outer side of the telescopic rod, and the top of the compression spring is fixedly connected to the inner top of the arched support beam, and the bottom end of the compression spring is fixedly connected to the top of the supporting beam.

[0008] Preferably, reinforcement fences are symmetrically installed on both sides of the top of the U-shaped main beam body, and a plurality of groups of "eight"-shaped reinforcement rods are evenly arranged inside the reinforcement fences.

[0009] Preferably, the connecting member includes a U-shaped frame, five rows of U-shaped frames are evenly arranged at both ends of the top of the arched support beam, and fixing holes are symmetrically opened on both sides of the U-shaped frame, a fixing ring is arranged at the bottom end of the connecting rod, and rivets are commonly arranged inside the fixing ring and the fixing hole.

[0010] Preferably, a plurality of groups of reinforcing cross beams are commonly provided at the bottom ends on both sides of the U-shaped main beam body, and the cross section of the reinforcing cross beam is in an L-shaped structure.

[0011] Preferably, triangular reinforcing ribs are symmetrically installed on both sides of the bottom of the supporting crossbeam, and one side of the triangular reinforcing rib is fixedly connected to the inner wall of the U-shaped main beam body.

[0012] Preferably, a plurality of groups of arc-shaped grooves matching the steel bars are evenly formed on the top of the strip-shaped support seat, and the depth of the arc-shaped grooves is the same as the diameter of the cross section of the steel bar.

[0013] Beneficial Effects

[0014] Compared with the prior art, the utility model provides a high-stability steel-concrete composite beam, which has the following beneficial effects:

[0015] 1. The utility model improves the bearing capacity of the U-shaped main beam itself by designing the U-shaped main beam as a U-shaped structural pile, and then opens a pouring groove on the top of the U-shaped main beam and longitudinally arranges multiple groups of straightened steel bars in the pouring groove, and evenly arranges strip support seats for supporting the steel bars in the pouring groove, thereby improving the stability of the steel bars themselves in the pouring groove during the pouring of the first concrete layer, and further improving the bearing capacity of the top of the entire U-shaped main beam after the first concrete layer is completely solidified, and multiple groups of transverse strip support seats can also ensure that the top of the U-shaped main beam still has a high bearing capacity after the pouring groove is opened, so that the entire steel-concrete composite beam still has high stability under stress even if it is long.

[0016] 2. The utility model symmetrically installs U-shaped cross bars at both ends of the U-shaped main beam, and pours a second concrete layer inside the U-shaped cross bars, thereby improving the stability of the U-shaped main beam structure itself under stress. In addition, an arched support beam is jointly installed inside the two sets of U-shaped cross bars, and the inner top of the U-shaped main beam is supported by the top of the arched support beam, thereby improving the stability of the top of the U-shaped main beam after being subjected to stress. At the same time, a lower pressure plate is arranged inside the casting groove, and the lower pressure plate is fixedly connected to the top of the arched support beam through a connecting rod. After the first concrete layer is poured inside the casting groove and solidified, the top of the arched support beam can provide stable supporting force for multiple parts of the top of the U-shaped main beam, so that each part of the top of the U-shaped main beam can still be very stable when subjected to large downward stress, which makes the entire steel-concrete composite beam have high stability under stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view of the utility model;

[0018] Figure 2 This is a front cross-sectional view of the utility model;

[0019] Figure 3 It is a top view schematic diagram of the utility model;

[0020] Figure 4 It is a three-dimensional schematic diagram of the U-shaped main beam body of the utility model;

[0021] Figure 5 It is a three-dimensional schematic diagram of the U-shaped crossbar of the utility model;

[0022] Figure 6 It is a three-dimensional schematic diagram of the lower pressing plate of the utility model;

[0023] Figure 7 It is a three-dimensional schematic diagram of the strip support seat of the utility model;

[0024] Figure 8 For this utility model Figure 2 A magnified image of point A;

[0025] Fig. 9 For this utility model Figure 2 Enlarged view of point B.

[0026] In the figure:

[0027] 10. U-shaped main beam; 11. pouring groove; 111. first concrete layer; 12. fixing column; 13. steel bar; 14. fixing nut; 15. strip support seat; 151. arc-shaped slot; 16. first through hole; 17. connecting rod; 18. lower pressure plate; 19. strengthening beam;

[0028] 20. Arched support beam; 21. U-shaped cross bar; 211. Second concrete layer; 22. Second through hole; 23. Third through hole; 24. Connecting bolt; 25. Connecting nut; 26. Supporting cross beam; 27. Telescopic rod; 28. Compression spring; 29. ​​Connecting piece;

[0029] 30. Reinforce the fence; 31. "Eight" shaped reinforcement rod. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] like Figure 1-9As shown, a high-stability steel-concrete composite beam comprises a U-shaped main beam body 10 as a mounting carrier and an arched support beam 20 located inside the U-shaped main beam body 10, a pouring groove 11 is opened on the top of the U-shaped main beam body 10, and a plurality of groups of fixing columns 12 are symmetrically and evenly arranged at both ends of the inner side of the pouring groove 11, and steel bars 13 are installed between two groups of fixing columns 12, and an end of the fixing column 12 away from the U-shaped main beam body 10 extends to the outside of the U-shaped main beam body 10 and is threadedly provided with a fixing nut 14, and a plurality of groups of strip support seats 15 cooperating with the steel bars 13 are evenly arranged on the inner bottom of the pouring groove 11, and the pouring groove 11 is provided with a plurality of strip support seats 15 cooperating with the steel bars 13. Five rows of first through holes 16 are evenly arranged at both ends of the bottom of the pouring groove 11, five groups of lower pressure plates 18 are symmetrically arranged at both ends inside the pouring groove 11, and the lower pressure plates 18 are located above the steel bars 13, and four groups of connecting rods 17 are evenly installed at the bottom of the lower pressure plates 18. The bottom ends of the connecting rods 17 pass through the first through holes 16 and are fixedly connected to the top of the arched support beam 20 through the connecting pieces 29. Fixed components that cooperate with the arched support beam 20 are symmetrically installed at the bottoms of both ends of the U-shaped main beam body 10, and a reinforcement component is arranged at the middle position inside the U-shaped main beam body 10. A first concrete layer 111 is cast inside the pouring groove 11.

[0032] In this embodiment, the fixing assembly includes a U-shaped cross bar 21, and two groups of U-shaped cross bars 21 are provided. The two groups of U-shaped cross bars 21 are respectively located at the bottom of the two ends of the U-shaped main beam body 10, and the two ends of the arched support beam 20 extend to the inside of the two groups of U-shaped cross bars 21 respectively. A number of groups of second through holes 22 are symmetrically and evenly opened at both ends of the arched support beam 20, and a number of groups of third through holes 23 corresponding to the positions of the second through holes 22 are symmetrically opened at both ends of the U-shaped cross bar 21. A number of groups of connecting bolts 24 are evenly arranged at one end of the U-shaped cross bar 21, and the tail end of the connecting bolt 24 passes through the second through hole 22 and the two groups of third through holes 23 and is threadedly provided with a connecting nut 25, and a second concrete layer 211 is cast inside the U-shaped cross bar 21.

[0033] In this embodiment, the reinforcement component includes a supporting beam 26, which is located in the middle position inside the U-shaped main beam body 10, and the two sides of the supporting beam 26 are fixedly connected to the inner two sides of the U-shaped main beam body 10, and four groups of telescopic rods 27 are evenly installed on the top of the supporting beam 26, and the top of the telescopic rod 27 passes through the arched support beam 20 and is fixedly connected to the middle position of the top of the U-shaped main beam body 10. The outer side of the telescopic rod 27 is provided with a compression spring 28, and the top of the compression spring 28 is fixedly connected to the inner top of the arched support beam 20, and the bottom end of the compression spring 28 is fixedly connected to the top of the supporting beam 26.

[0034] In this embodiment, reinforcement fences 30 are symmetrically installed on both sides of the top of the U-shaped main beam body 10, and a number of groups of "eight"-shaped reinforcement rods 31 are evenly arranged inside the reinforcement fences 30, which can not only provide safety protection but also improve the stability of the U-shaped main beam body 10 itself.

[0035] In this embodiment, the connecting member 29 includes a U-shaped frame, and five rows of U-shaped frames are evenly arranged at both ends of the top of the arched support beam 20, and fixing holes are symmetrically opened on both sides of the U-shaped frame. A fixing ring is set at the bottom end of the connecting rod 17, and rivets are jointly set inside the fixing ring and the fixing hole, which helps to firmly connect the bottom end of the connecting rod 17 with the top of the arched support beam 20.

[0036] In this embodiment, a plurality of groups of reinforcing beams 19 are provided at the bottom ends of both sides of the U-shaped main beam body 10 , and the cross-section of the reinforcing beams 19 is L-shaped, which helps to improve the stress stability of the U-shaped main beam body 10 itself.

[0037] In this embodiment, triangular reinforcing ribs are symmetrically installed on both sides of the bottom of the supporting beam 26, and one side of the triangular reinforcing rib is fixedly connected to the inner wall of the U-shaped main beam body 10, which helps to improve the stability of the supporting beam 26 under stress.

[0038] In this embodiment, a plurality of groups of arc-shaped grooves 151 matching the steel bars 13 are evenly arranged on the top of the strip support seat 15, and the depth of the arc-shaped grooves 151 is the same as the diameter of the cross section of the steel bars 13. After the steel bars 13 are inserted into the arc-shaped grooves 151, it can be ensured that the steel bars 13 are stable and not deformed during the process of pouring concrete into the pouring groove 11.

[0039] Working principle: a pouring groove 11 is opened on the top of the U-shaped main beam body 10 and multiple groups of straightened steel bars 13 are longitudinally arranged inside the pouring groove 11. Then, by tightening the fixing nuts 14 on the fixed columns 12 exposed at both ends of the U-shaped main beam body 10, the whole steel bar 13 is pulled straight, and strip support seats 15 supporting the steel bars 13 are evenly arranged inside the pouring groove 11. The steel bars 13 are inserted into the arc-shaped grooves 151 at the tops of the strip support seats 15. Then, the lower pressing plate 18 is placed inside the pouring groove 11 and placed on top of several groups of steel bars 13. At this time, the bottom end of the connecting rod 17 extends through the first through hole 16 to the inner top position of the U-shaped main beam body 10, and then the bottom end of the connecting rod 17 is fixedly connected to the top of the arched support beam 20 through the connecting piece 29. Then, the two ends of the arched support beam 20 are placed in two groups of U-shaped cross bars 21, and the connecting bolts 24 are passed through the second through holes 22 and the two groups of third through holes 23 in turn, and then the connecting nuts 25 are tightened to confine the two ends of the arched support beam 20 inside the U-shaped cross bars 21. Finally, concrete is poured into the pouring groove 11 and the U-shaped cross bars 21, so that a first concrete layer 111 is formed inside the pouring groove 11, and a second concrete layer 211 is formed inside the U-shaped cross bars 21. After the concrete is completely solidified, the top of the arched support beam 20 can provide stable supporting force for multiple parts of the top of the U-shaped main beam body 10, and the elastic potential energy of the compression spring 28 forces the middle position of the top of the arched support beam 20 to always be tightly against the middle position of the top of the U-shaped main beam body 10.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-stability steel-concrete composite beam, comprising a U-shaped main beam body (10) as a mounting carrier and an arched support beam (20) located inside the U-shaped main beam body (10), characterized in that: The top of the U-shaped main beam (10) is provided with a pouring groove (11), and a plurality of groups of fixing columns (12) are symmetrically and evenly arranged at both ends of the inner part of the pouring groove (11), and a steel bar (13) is installed between two groups of fixing columns (12). An end of the outer side of the fixing column (12) away from the U-shaped main beam (10) extends to the outer side of the U-shaped main beam (10) and is threadedly provided with a fixing nut (14). The inner bottom of the pouring groove (11) is evenly provided with a plurality of groups of strip-shaped support seats (15) that cooperate with the steel bars (13). Five rows of first through holes (16) are evenly arranged at both ends of the inner bottom of the pouring groove (11). Five groups of lower pressure plates (18) are symmetrically arranged at both ends inside the U-shaped main beam (11), and the lower pressure plates (18) are located above the steel bars (13). Four groups of connecting rods (17) are evenly installed at the bottom of the lower pressure plates (18). The bottom ends of the connecting rods (17) pass through the first through holes (16) and are fixedly connected to the top of the arched support beam (20) through the connecting pieces (29). Fixed components that cooperate with the arched support beam (20) are symmetrically installed at the bottoms of both ends inside the U-shaped main beam (10). A reinforcement component is arranged at the middle position inside the U-shaped main beam (10), and a first concrete layer (111) is cast inside the pouring trough (11).

2. A high-stability steel-concrete composite beam according to claim 1, characterized in that: The fixing assembly comprises a U-shaped cross bar (21), wherein two groups of the U-shaped cross bars (21) are provided, and the two groups of U-shaped cross bars (21) are respectively located at the bottom of both ends of the U-shaped main beam body (10), and the two ends of the arched support beam (20) respectively extend to the inside of the two groups of U-shaped cross bars (21), and the two ends of the arched support beam (20) are symmetrically and evenly provided with a plurality of groups of second through holes (22), and the two ends of the U-shaped cross bar (21) are symmetrically and evenly provided with a plurality of groups of third through holes (23) corresponding to the positions of the second through holes (22), and one end of the U-shaped cross bar (21) is evenly provided with a plurality of groups of connecting bolts (24), and the tail ends of the connecting bolts (24) are threadedly provided with connecting nuts (25) after passing through the second through holes (22) and the two groups of third through holes (23), and the inside of the U-shaped cross bar (21) is cast with a second concrete layer (211).

3. The high-stability steel-concrete composite beam according to claim 1, characterized in that: The reinforcement component comprises a support crossbeam (26), wherein the support crossbeam (26) is located at a middle position inside the U-shaped main beam body (10), and two sides of the support crossbeam (26) are fixedly connected to two inner sides of the U-shaped main beam body (10), and four groups of telescopic rods (27) are evenly installed on the top of the support crossbeam (26), and the top ends of the telescopic rods (27) pass through the arched support beam (20) and are fixedly connected to the middle position of the inner top of the U-shaped main beam body (10), and the outer side of the telescopic rod (27) is sleeved with a compression spring (28), and the top end of the compression spring (28) is fixedly connected to the inner top of the arched support beam (20), and the bottom end of the compression spring (28) is fixedly connected to the top of the support crossbeam (26).

4. The high-stability steel-concrete composite beam according to claim 1, characterized in that: Reinforcement fences (30) are symmetrically installed on both sides of the top of the U-shaped main beam body (10), and a plurality of groups of "eight"-shaped reinforcement rods (31) are evenly arranged inside the reinforcement fences (30).

5. The high-stability steel-concrete composite beam according to claim 1, characterized in that: The connecting member (29) comprises a U-shaped frame, five rows of U-shaped frames are evenly arranged at both ends of the top of the arched support beam (20), and fixing holes are symmetrically opened on both sides of the U-shaped frame, and a fixing ring is arranged at the bottom end of the connecting rod (17), and rivets are arranged inside the fixing ring and the fixing hole.

6. The high-stability steel-concrete composite beam according to claim 1, characterized in that: A plurality of groups of reinforcing cross beams (19) are commonly arranged at the bottom ends of both sides of the U-shaped main beam body (10), and the cross section of the reinforcing cross beam (19) is in an L-shaped structure.

7. The high-stability steel-concrete composite beam according to claim 3, characterized in that: Triangular reinforcing ribs are symmetrically installed on both sides of the bottom of the supporting crossbeam (26), and one side of the triangular reinforcing rib is fixedly connected to the inner wall of the U-shaped main beam body (10).

8. The high-stability steel-concrete composite beam according to claim 1, characterized in that: The top of the strip-shaped support seat (15) is evenly provided with a plurality of groups of arc-shaped grooves (151) adapted to the steel bars (13), and the depth of the arc-shaped grooves (151) is the same as the diameter of the cross section of the steel bars (13).

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