Reinforced structure for fabricated bridge

Abstract

The utility model relates to the field of bridges, in particular to a reinforcing structure for an assembly type bridge. The bridge base is arranged at the upper end of the fixing base, and the fixing base is connected with the bridge base in a matched mode. The steel pulling assembly is arranged between the fixed seat and the bridge base and used for applying external prestress to the fixed seat and the bridge base under matched connection; the steel pulling assembly comprises an anchoring head a arranged on the bottom face of the bridge base, a connecting disc is arranged at the bottom end of the anchoring head a, and a steel cable a is arranged at the bottom end of the connecting disc; the connecting sleeve is arranged at the bottom end of the steel cable a, and the bottom end of the steel cable a penetrates through the connecting sleeve. The steel pulling assembly is arranged, the anchoring head a and the anchoring head b are connected with the fixing base and the bridge base, prestress is applied, and the steel cable a and the steel cable b are forced to be stressed, so that internal force distribution of an original structure is changed, the stress level of the original structure is reduced, and the bearing capacity of the structure is obviously improved.

Description

Technical Field

[0001] The utility model relates to the field of bridges, in particular to a reinforcement structure for assembled bridges. Background Art

[0002] Prefabricated bridges need to be reinforced during installation. For example, problems such as construction errors in the expansion spacing between bridge decks, aging of post-cast column fillings, poor installation of expansion devices, uneven bridge decks before and after the bridge heads, poor bridge deck casting, and poor support platforms all require reinforcement and renovation.

[0003] A Chinese patent with authorization announcement number CN217629495U discloses a reinforcement structure for an assembled bridge, including an assembled bridge upper part, the bottom end of the assembled bridge upper part is fixed with the assembled bridge lower part, the surface of the assembled bridge lower part is sleeved with a reinforcement mechanism, the top end of the reinforcement mechanism is in contact with the bottom end of the assembled bridge upper part, and the reinforcement mechanism is composed of a first fixing seat and a second fixing seat.

[0004] However, the above-mentioned disclosed solution has the following shortcomings: although the device can be quickly positioned during installation, saving time and effort, the device cannot implement external prestressing to cope with the internal force caused by the load, thereby improving the bearing capacity of the original beam. Utility Model Content

[0005] The utility model aims to propose a reinforcement structure for assembled bridges in view of the problem that the background technology cannot implement external prestressing to cope with the internal force caused by the load, thereby improving the bearing capacity of the original beam.

[0006] The technical solution of the utility model is: a reinforcement structure for an assembled bridge, comprising:

[0007] Fixed seat;

[0008] The bridge base is arranged at the upper end of the fixing seat, and the fixing seat is cooperatively connected with the bridge base;

[0009] The steel tension assembly is arranged between the fixing seat and the bridge base, and is used to apply external prestress to the matching connection between the fixing seat and the bridge base.

[0010] Preferably, the steel pull assembly comprises:

[0011] An anchor head a is arranged on the bottom surface of the bridge base, a connection plate is arranged at the bottom end of the anchor head a, and a steel cable a is arranged at the bottom end of the connection plate;

[0012] A connecting sleeve is arranged at the bottom end of the steel cable a, the bottom end of the steel cable a passes through the connecting sleeve, and a thread is provided on the outer side of the bottom end of the steel cable a;

[0013] A fixed sleeve, which is arranged outside the thread;

[0014] An adapter, which is arranged at the bottom end of the steel cable a;

[0015] A steel cable b, which is arranged at the bottom end of the adapter;

[0016] An anchor head b is arranged at the bottom end of the steel cable b.

[0017] Preferably, the anchoring head a comprises a fixed block a and a rotating head a; the fixed block a is arranged on the bottom surface of the bridge base, and the bottom end of the fixed block a is rotatably connected to the rotating head a.

[0018] Preferably, the anchoring head b comprises a fixed block b and a rotating head b; the fixed block b is arranged on the upper side of the fixed block b, and the upper end of the fixed block b is rotatably connected to the rotating head b.

[0019] Preferably, the adapter includes a connector a and a connector b; the connector a is arranged at the bottom end of the steel cable a, the connector b is arranged at the upper end of the steel cable b, and the connector a and the connector b are rotationally connected.

[0020] Preferably, an installation component for installation and fixation is provided between the fixing seat and the bridge base.

[0021] Preferably, the mounting assembly comprises:

[0022] A plug-in rod is arranged on the upper end surface of the fixing seat, and a plug-in groove is provided on the bottom surface of the bridge base, and the plug-in groove and the plug-in rod are plugged;

[0023] The fixing rod is arranged through the plug-in slot and the plug-in rod, and fixing bolts are arranged at both ends of the fixing rod.

[0024] Compared with the prior art, the utility model has the following beneficial technical effects:

[0025] By setting up the steel tension assembly, connecting it with the fixed seat and the bridge base through the anchor heads a and b, and applying prestress, the steel cables a and b are forced to be subjected to stress, thereby changing the internal force distribution of the original structure, reducing the stress level of the original structure, and significantly improving the bearing capacity of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0027] Figure 2 for Figure 1 Schematic diagram of the steel pull assembly structure;

[0028] Figure 3 for Figure 2 Bottom view of the .

[0029] Figure markings: 1. fixing seat; 2. bridge base; 3. steel pulling assembly; 31. anchor head a; 32. connecting plate; 33. steel cable a; 34. connecting sleeve; 35. fixing sleeve; 36. adapter; 37. steel cable b; 38. anchor head b; 311. fixing block a; 312. rotating head a; 381. fixing block b; 382. rotating head b; 361. connecting head a; 362. connecting head b; 4. mounting assembly; 41. plug-in rod; 42. plug-in slot; 43. fixing rod; 44. fixing bolt. DETAILED DESCRIPTION

[0030] Embodiment 1

[0031] like Figure 1-Figure 3 As shown, the utility model provides a reinforcement structure for an assembled bridge, which includes a fixing seat 1, a bridge base 2 and a steel pulling assembly 3.

[0032] The bridge base 2 is arranged at the upper end of the fixing base 1, the fixing base 1 is cooperatively connected with the bridge base 2, and the shape of the fixing base 1 is arranged to be a trapezoid;

[0033] The steel tension assembly 3 is arranged between the fixed seat 1 and the bridge base 2, and is used to apply external prestress to the matching connection between the fixed seat 1 and the bridge base 2. The steel tension assembly 3 is arranged and connected with the fixed seat 1 and the bridge base 2 by anchoring to apply prestress, forcing the steel cable a33 and the steel cable b37 to be stressed, thereby changing the internal force distribution of the original structure and reducing the stress level of the original structure.

[0034] Embodiment 2

[0035] like Figure 2-Figure 3 As shown, the utility model proposes a reinforcement structure for an assembled bridge. Compared with the first embodiment, this embodiment further discloses the specific structure of the steel pull assembly 3. It includes an anchor head a31, a connecting plate 32, a steel cable a33, a connecting sleeve 34, a fixing sleeve 35, an adapter 36, a steel cable b37 and an anchor head b38;

[0036] The anchor head a31 is arranged on the bottom surface of the bridge base 2, a connection plate 32 is arranged at the bottom end of the anchor head a31, a steel cable a33 is arranged at the bottom end of the connection plate 32, the steel cable a33 and the connection plate 32 are connected by welding, and the connection plate 32 and the connection sleeve 34 are fixed by a plurality of bolts;

[0037] The connecting sleeve 34 is arranged at the bottom end of the steel cable a33, the bottom end of the steel cable a33 passes through the connecting sleeve 34, and a thread is formed on the outer side of the bottom end of the steel cable a33;

[0038] The fixing sleeve 35 is sleeved outside the thread, and the inner side of the fixing sleeve 35 is provided with a thread;

[0039] Further, the inner side of the fixing sleeve 35 is threadedly engaged with the outer side of the steel cable a33;

[0040] The adapter 36 is arranged at the bottom end of the steel cable a33, and the adapter 36 is used for connecting the steel cable b37;

[0041] The steel cable b37 is arranged at the bottom end of the adapter 36;

[0042] The anchor head b38 is arranged at the bottom end of the steel cable b37, and the connection between the steel cable b37 and the anchor head a31 is welding.

[0043] Embodiment 3

[0044] like Figure 2-Figure 3 As shown, the utility model provides a reinforcement structure for an assembled bridge. Compared with the first embodiment, this embodiment further includes an anchor head a31;

[0045] The anchor head a31 includes a fixed block a311 and a rotating head a312; the fixed block a311 is arranged on the bottom surface of the bridge base 2, and the bottom end of the fixed block a311 is rotatably connected with the rotating head a312. The fixed block a311 of the anchor head a31 is welded to the bottom surface of the bridge base 2, and then the rotating head a312 is welded to the connecting plate 32. The rotating head a312 and the fixed block b381 are rotatably connected, which is used to tilt the steel pulling assembly 3.

[0046] Embodiment 4

[0047] like Figure 2-Figure 3 As shown, the utility model provides a reinforcement structure for an assembled bridge. Compared with the first embodiment, this embodiment further includes an anchor head b38;

[0048] The anchor head b38 includes a fixed block b381 and a rotating head b382; the fixed block b381 is arranged on the upper side of the fixed block b381, and the upper end of the fixed block b381 is rotatably connected with the rotating head b382. The fixed block b381 of the anchor head b38 is welded to the upper end surface of the fixed seat 1, and then the rotating head b382 is welded to the steel cable b37. The rotating head b382 and the fixed block b381 are rotatably connected to allow the steel pulling assembly 3 to be installed at an angle.

[0049] Embodiment 5

[0050] like Figure 2-Figure 3 As shown, the utility model provides a reinforcement structure for an assembled bridge. Compared with the first embodiment, this embodiment further includes an adapter 36;

[0051] The adapter 36 includes a connector a361 and a connector b362; the connector a361 is arranged at the bottom end of the steel cable a33, and the connector b362 is arranged at the upper end of the steel cable b37. The connector a361 and the connector b362 are rotatably connected to each other for connecting the steel cable a33 and the steel cable b37.

[0052] Embodiment 6

[0053] like Figure 1 As shown, the utility model proposes a reinforcement structure for an assembled bridge. Compared with the first embodiment, this embodiment further discloses the specific structure of the installation assembly 4. It includes a plug rod 41, a plug slot 42, a fixing rod 43 and a fixing bolt 44;

[0054] The plug-in rod 41 is arranged on the upper end surface of the fixing seat 1, and the bottom surface of the bridge base 2 is provided with a plug-in slot 42, the plug-in slot 42 and the plug-in rod 41 are plugged, and the number of the plug-in rod 41 and the plug-in slot 42 are both set to be multiple;

[0055] The fixing rod 43 penetrates the insertion slot 42 and the insertion rod 41 , and fixing bolts 44 are provided at both ends of the fixing rod 43 . The number of the fixing rods 43 is set to be multiple, and the number of the fixing bolts 44 in the multiple fixing rods 43 is set to be multiple.

[0056] To sum up, the working principle of the utility model is: first, the fixed seat 1 and the bridge base 2 are preliminarily installed by plugging the plug-in slot 42 and the plug-in rod 41, and then the fixing rod 43 is inserted into the plug-in slot 42 and the plug-in rod 41 in turn, and then fixed with the fixing bolt 44. When the device is reinforced, the steel pulling component 3 is respectively installed between the fixed seat 1 and the bridge base 2. The specific process is: first, the fixing block a311 of the anchor head a31 is welded to the bottom surface of the bridge base 2, and then the connecting plate 32 is fixed with the connecting sleeve 34 by bolts. At this time, the upper end of the steel cable a33 is welded to the bottom surface of the connecting plate 32, and the bottom end of the steel cable a33 passes through the fixing sleeve 35, and the fixing sleeve 35 is tightened to fix the fixing sleeve 35. At the bottom end of the steel cable a33, the steel cable a33 can be firmly fixed by bolts and a fixing sleeve 35, and the length of the steel cable a33 can be replaced according to demand. The steel cable a33 is welded to the connector a361 in the adapter 36, and the steel cable b37 is welded to the connector b362. The anchor head b38 is welded to the bottom end of the steel cable b37, and the length of the steel cable b37 is replaceable. The fixing block b381 in the anchor head b38 is welded to the upper side of the fixing seat 1. A steel pulling assembly 3 is set, which is connected to the fixing seat 1 and the bridge base 2 through the anchor head a31 and the anchor head b38, and prestress is applied to force the steel cable a33 and the steel cable b37 to be subjected to force, thereby changing the internal force distribution of the original structure, reducing the stress level of the original structure, and significantly improving the bearing capacity of the structure.

[0057] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A reinforcement structure for an assembled bridge, characterized in that: include: Fixed seat (1); A bridge base (2) is arranged on the upper end of the fixing base (1), and the fixing base (1) is cooperatively connected with the bridge base (2); A steel tension assembly (3) is arranged between the fixing seat (1) and the bridge base (2) and is used to apply external prestress to the matching connection between the fixing seat (1) and the bridge base (2); The steel pull assembly (3) comprises: An anchor head a (31) is arranged on the bottom surface of the bridge base (2), a connection plate (32) is arranged at the bottom end of the anchor head a (31), and a steel cable a (33) is arranged at the bottom end of the connection plate (32); A connecting sleeve (34) is arranged at the bottom end of the steel cable a (33), the bottom end of the steel cable a (33) passes through the connecting sleeve (34), and a thread is formed on the outer side of the bottom end of the steel cable a (33); A fixed sleeve (35) which is sleeved on the outside of the thread; An adapter (36) disposed at the bottom end of the steel cable a (33); A steel cable b (37), which is arranged at the bottom end of the adapter (36); An anchor head b (38) is arranged at the bottom end of the steel cable b (37).

2. The reinforcement structure for an assembled bridge according to claim 1, characterized in that: The anchoring head a (31) comprises a fixed block a (311) and a rotating head a (312); the fixed block a (311) is arranged on the bottom surface of the bridge base (2), and the bottom end of the fixed block a (311) is rotatably connected to the rotating head a (312).

3. The reinforcement structure for an assembled bridge according to claim 1, characterized in that: The anchoring head b (38) includes a fixed block b (381) and a rotating head b (382); the fixed block b (381) is arranged on the upper side of the fixed block b (381), and the upper end of the fixed block b (381) is rotatably connected to the rotating head b (382).

4. The reinforcement structure for an assembled bridge according to claim 1, characterized in that: The adapter (36) includes a connector a (361) and a connector b (362); the connector a (361) is arranged at the bottom end of the steel cable a (33), and the connector b (362) is arranged at the upper end of the steel cable b (37); the connector a (361) and the connector b (362) are rotatably connected.

5. The reinforcement structure for an assembled bridge according to claim 1, characterized in that: An installation component (4) for installation and fixing is provided between the fixing seat (1) and the bridge base (2).

6. The reinforcement structure for an assembled bridge according to claim 5, characterized in that: The mounting assembly (4) comprises: A plug-in rod (41) is arranged on the upper end surface of the fixing seat (1); a plug-in groove (42) is provided on the bottom surface of the bridge base (2); and the plug-in groove (42) and the plug-in rod (41) are plugged together; A fixing rod (43) is arranged to penetrate the insertion groove (42) and the insertion rod (41), and fixing bolts (44) are arranged at both ends of the fixing rod (43).

Images