Bridge expansion joint mounting and fixing frame

Abstract

The utility model relates to a bridge expansion joint mounting and fixing frame which is used for mounting an expansion joint structure, and the expansion joint structure comprises a rubber strip, a middle beam, an edge beam, an anchoring plate, an anchoring steel bar, a reinforcing steel bar, a reserved steel bar, a bridge floor, steel ingot fiber concrete and a steel bar net. Comprising a counter-force support pressing lever, a counter-pressing beam, a cross beam, a jack, a screw rod, a hook handrail, a first nut and a second nut. The bridge expansion joint is simple in structure, easy to operate, capable of being disassembled and assembled, convenient to transport and long in service life, the height difference between the expansion joint structure and the top face of a bridge floor can be smaller than 2 mm, the percent of pass is extremely high, accuracy is extremely high, the stability of the bridge floor is improved, the comfort degree of bridge traffic is greatly improved, and the service life of the bridge is prolonged. And the bumping condition when the vehicle passes through the bridge floor is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge expansion joints, in particular to a bridge expansion joint installation fixing frame. Background Art

[0002] The quality of bridge expansion joint installation directly affects the comfort of traffic on highway bridges, and also affects the durability of bridge structures. Therefore, the first volume of civil engineering projects in the "Highway Engineering Quality Inspection and Assessment Standards" (JTG F80-1-2017) puts forward higher requirements on the installation quality of bridge expansion joints, requiring that the height difference between the bridge expansion joint structure and the top surface of the bridge deck shall not exceed 2mm. However, most projects now rely mainly on horizontal rulers to simply check the height difference between the top surface of the bridge deck and the expansion joint structure when installing bridge expansion joints, and only manually adjust the height difference between the expansion joint structure and the top surface of the bridge deck. At the same time, when the anchor steel bars in the expansion joint structure are welded with the reserved steel bars of the prefabricated beams, the steel structure will have a certain degree of thermal deformation, which further causes the height difference between the top surface of the bridge deck and the expansion joint structure. As a result, after the construction is completed, the height difference between the top surface of the bridge deck and the expansion joint structure exceeds the specification requirements, which seriously affects the comfort of bridge traffic. When the height difference range is large, there will be a feeling of jumping. Utility Model Content

[0003] The utility model aims to solve the deficiencies of the prior art and provides a bridge expansion joint installation fixing frame.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a bridge expansion joint installation fixing frame, which is used to install the expansion joint structure, the expansion joint structure includes a rubber strip, a middle beam, a side beam, an anchor plate, an anchor steel bar, a reinforcing steel bar, a reserved steel bar, a bridge deck, a steel ingot fiber concrete and a steel mesh, a plurality of the bridge decks are evenly laid along the same direction, and each of the bridge decks is provided with a notch on both sides of the top surface, and two adjacent notches are symmetrically arranged, the bridge deck includes a prefabricated beam, a pavement layer and an asphalt layer, the pavement layer is laid on the top surface of the prefabricated beam, the asphalt layer is laid on the top surface of the pavement layer, the reserved steel bar is located in the notch, and the two ends of the reserved steel bar are embedded in the prefabricated beam, the A central beam is fixedly installed at the center of the rubber strip, and a side beam is fixedly installed on both sides of the rubber strip respectively. One side of each side beam is fixedly installed to one end of a steel mesh, and the other end of the steel mesh is embedded in the asphalt layer. An anchor plate is fixedly installed at the bottom of each side beam, and an anchor steel bar is fixedly installed at the bottom of each anchor plate. Each anchor steel bar is welded to a reserved steel bar, and several reinforcing steel bars are tied to each anchor steel bar. The steel ingot fiber concrete is filled into the groove. The bridge expansion joint installation fixing frame includes a reaction support pressure bar, a reaction pressure beam, a cross beam, a jack, a screw, a hook railing, a first nut and a second nut. The reaction support pressure bar includes a reaction pressure bar and a support, the reaction pressure bar is provided with a plurality of first through holes, the two sides of the reaction pressure bar are respectively fixedly installed to the top of a support, the bottom of each support abuts against the top surface of the asphalt layer, the reaction pressure beam is provided with a plurality of second through holes, the two ends of the reaction pressure beam are respectively abutted against the top surface of an asphalt layer, the middle part of the reaction pressure beam abuts against the top surface of the middle beam and the side beam, the cross beam is provided with a plurality of third through holes, the two ends of the cross beam are respectively detachably installed on an anchor plate, the middle part of the cross beam abuts against the bottom surface of the middle beam, the reaction pressure bar, the reaction pressure beam and the cross beam are arranged parallel to each other, the bottom of the jack is fixedly installed to the center of the reaction pressure beam, The top of the jack is fixedly installed to the center of the counter-pressure bar, the two screw rods are symmetrically arranged, each of the screw rods passes through the counter-pressure bar, the counter-pressure beam and the cross beam through the first through hole, the second through hole and the third through hole, and one end of each screw rod is detachably installed on the counter-pressure bar through the first nut, and the other end is detachably installed on the cross beam through the first nut, and each screw rod is perpendicular to the counter-pressure bar. The two hook railings are symmetrically arranged, each of the hook railings passes through the counter-pressure bar and the counter-pressure beam through the first through hole and the second through hole, and one end of each hook railing is detachably installed on the counter-pressure bar through the second nut, and the other end is abutted against the reserved steel bar, and each hook railing is perpendicular to the counter-pressure bar.

[0005] Particularly, a first thread is arranged on the periphery of the hook railing, and a hook is arranged at the bottom of the hook railing, and the hook is used to hook the reserved steel bar.

[0006] Particularly, the first nut is threadedly connected to the periphery of the screw rod, and the second nut is threadedly connected to the first thread on the periphery of the hook railing.

[0007] Particularly, the steel mesh is D10 anti-cracking steel mesh.

[0008] The beneficial effects of the utility model are as follows: the utility model is a bridge expansion joint installation fixing frame with simple structure, simple operation, detachable assembly, easy transportation and long service life. The utility model can make the height difference between the expansion joint structure and the top surface of the bridge deck less than 2mm, with a very high pass rate and high precision, which increases the stability of the bridge deck and greatly increases the comfort of bridge traffic, avoiding the situation of vehicles jumping when passing over the bridge deck. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the utility model;

[0010] Figure 2 It is a structural schematic diagram of the expansion joint structure;

[0011] Figure 3 For the utility model Figure 1 AA cross-section diagram of ;

[0012] Figure 4 For the utility model Figure 1 Schematic diagram of the cross section at BB;

[0013] Figure 5 For the utility model Figure 1 Schematic diagram of the cross section at CC.

[0014] In the figure: 1- rubber strip; 2- middle beam; 3- side beam; 4- anchor plate; 5- anchor steel bar; 6- reinforcing steel bar; 7- reserved steel bar; 8- bridge deck; 801- precast beam; 802- pavement layer; 803- asphalt layer; 9- ingot fiber concrete; 10- steel mesh; 11- reaction support pressure bar; 1101- counter pressure bar; 1102- support; 12- counter pressure beam; 13- cross beam; 14- jack; 15- screw rod; 16- hook railing; 17- first nut; 18- second nut.

[0015] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0017] like Figure 1-Figure 5As shown, a bridge expansion joint installation fixing frame is used to install an expansion joint structure, the expansion joint structure includes a rubber strip 1, a middle beam 2, a side beam 3, an anchor plate 4, anchor steel bars, reinforcing steel bars 6, reserved steel bars 7, a bridge deck 8, steel ingot fiber concrete 9 and a steel mesh 10, a plurality of the bridge decks 8 are evenly laid along the same direction, and each of the bridge decks 8 is provided with a notch on both sides of the top surface, and two adjacent notches are symmetrically arranged, the bridge deck 8 includes a precast beam 801, a pavement layer 802 and an asphalt layer 803, the pavement layer 802 is laid on the top surface of the precast beam 801, the asphalt layer 803 is laid on the top surface of the pavement layer 802, the reserved steel bars 7 are located in the notch, and both ends of the reserved steel bars 7 are embedded in the precast beam 801, the rubber strip 1 is fixedly installed in the center A middle beam 2 is installed, and a side beam 3 is fixedly installed on both sides of the rubber strip 1. One side of each side beam 3 is fixedly installed to one end of a steel mesh 10, and the other end of the steel mesh 10 is embedded in the asphalt layer 803. An anchor plate 4 is fixedly installed at the bottom of each side beam 3, and an anchor steel bar 5 is fixedly installed at the bottom of each anchor plate 4. Each anchor steel bar 5 is welded to a reserved steel bar 7, and a plurality of reinforcing steel bars 6 are tied to each anchor steel bar 5. The steel ingot fiber concrete 9 is filled into the groove. It is characterized in that the bridge expansion joint installation fixing frame includes a reaction support pressure bar 11, a reaction beam 12, a cross beam 13, a jack 14, a screw 15, a hook railing 16, a first nut 17 and a second screw Mother 18, the reaction support pressure bar 11 includes a reaction pressure bar 1101 and a bracket 1102, the reaction pressure bar 1101 is provided with a plurality of first through holes, the two sides of the reaction pressure bar 1101 are respectively fixedly installed to the top of a bracket 1102, and the bottom of each bracket 1102 abuts against the top surface of the asphalt layer 803, the reaction pressure beam 12 is provided with a plurality of second through holes, the two ends of the reaction pressure beam 12 are respectively abutted against the top surface of an asphalt layer 803, the middle part of the reaction pressure beam 12 abuts against the top surface of the middle beam 2 and the side beam 3, the cross beam 13 is provided with a plurality of third through holes, the two ends of the cross beam 13 are respectively detachably installed on an anchor plate 4, the middle part of the cross beam 13 abuts against the bottom surface of the middle beam 2, the reaction pressure bar 1101, the reaction pressure beam 1 2 and the cross beam 13 are arranged parallel to each other, the bottom of the jack 14 is fixedly installed to the center of the back-pressure beam 12, and the top of the jack 14 is fixedly installed to the center of the back-pressure bar 1101, the two screw rods 15 are symmetrically arranged, each of the screw rods 15 passes through the back-pressure bar 1101, the back-pressure beam 12 and the cross beam 13 through the first through hole, the second through hole and the third through hole, and one end of each screw rod 15 is detachably installed on the back-pressure bar 1101 through the first nut 17, and the other end is detachably installed on the cross beam 13 through the first nut 17, and each screw rod 15 is perpendicular to the back-pressure bar 1101, the two hook rails 16 are symmetrically arranged, and each of the hook rails 16 passes through the back-pressure bar 1101 and the back-pressure beam 12 through the first through hole and the second through hole,One end of each hook rail 16 is detachably mounted on the counter-pressure bar 1101 through a second nut 18, and the other end is abutted against the reserved steel bar 7, and each hook rail 16 is perpendicular to the counter-pressure bar 1101.

[0018] Particularly, a first thread is disposed on the periphery of the hook railing 16 , and a hook is disposed at the bottom of the hook railing 16 , and the hook is used to hook the reserved steel bar 7 .

[0019] Specifically, the first nut 17 is threadedly connected to the periphery of the screw rod 15 , and the second nut 18 is threadedly connected to the first thread on the periphery of the hook rail 16 .

[0020] Particularly, the steel mesh 10 is a D10 anti-cracking steel mesh.

[0021] When the utility model is working: first, the expansion joint structure is moved by a crane or a worker to two adjacent slots, and its position is preliminarily adjusted. A bridge expansion joint installation fixing frame is assembled, and the counter-pressure bar 1101 and the top of the bracket 1102 are welded, and the bottom of the bracket 1102 is abutted against the top surface of the asphalt layer 803, and then the counter-pressure beam 12 is placed directly below the counter-pressure bar 1101, and the two ends of the counter-pressure beam 12 are respectively abutted against the top surface of an asphalt layer 803, and then the hook railing 16 is passed through the first through hole and the second through hole, and the hook is fixed by the second nut 18. The railing 16 is detachably mounted on the anti-pressure bar 1101, the hook at the bottom of the hook railing 16 is hooked tightly to the reserved steel bar 7, the second nut 18 is adjusted and tightened to ensure that the anti-pressure bar 1101 and the bracket 1102 do not move up and down, a jack 14 is installed between the anti-pressure bar 1101 and the anti-pressure beam 12, the length of the piston rod of the jack 14 is adjusted to ensure that the two ends of the anti-pressure beam 12 are tightly abutted against the top surface of an asphalt layer 803, and a crossbeam 13 is placed at the lower end of the anti-pressure beam 12. The two ends of the crossbeam 13 are detachably mounted on an anchor plate 4, and the crossbeam 13 is connected to the anchor plate 4 through two The screw rod 15 is connected with the back-pressure bar 1101 and the back-pressure beam 12. If the top surface of the middle beam 2 in the expansion joint structure is lower than the top surface of the asphalt layer 8, the height of the middle beam 2 and the side beam 3 can be adjusted by adjusting the first nut 17 on the screw rod 15, so that the top surfaces of the middle beam 2 and the side beam 3 are abutted against the back-pressure bar 1101. If the height of the top surface of the middle beam 2 in the expansion joint structure is higher than the top surface of the asphalt layer 8, the exposed length of the piston of the jack 14 can be adjusted to appropriately press the expansion joint structure downward so that the top surfaces of the middle beam 2 and the side beam 3 are the same height as the top surface of the asphalt layer 803. After the expansion joint structure is adjusted into place, use a ruler to check whether the height difference between the top surface of the asphalt layer 803 and the top surfaces of the middle beam 2 and the side beam 3 is within 2 mm. If not, continue to adjust. If the height difference is within the qualified range, the anchor steel bar 5 and the reserved steel bar 7 are welded and fixed. After welding, the reinforcing steel bar 6 is tied to the anchor steel bar 5, and the steel mesh 10 is installed to the predetermined position. Then, a bridge expansion joint installation and fixing frame is removed from the expansion joint structure, filled with steel ingot fiber concrete 9 and maintained, and finally the rubber strip 1 is installed, and the expansion joint structure is installed.

[0022] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A bridge expansion joint installation bracket, characterized in that: The invention comprises a reaction support pressure bar (11), a reaction beam (12), a cross beam (13), a jack (14), a screw rod (15), a hook rail (16), a first nut (17) and a second nut (18), wherein the reaction support pressure bar (11) comprises a reaction bar (1101) and a support (1102), wherein the reaction bar (1101) is provided with a plurality of first through holes, and both sides of the reaction bar (1101) are respectively fixedly mounted to the top of a support (1102), and the bottom of each support (1102) is in contact with the asphalt layer ( 803), a plurality of second through holes are arranged on the counter-pressure beam (12), the two ends of the counter-pressure beam (12) are respectively abutted against the top surface of an asphalt layer (803), the middle part of the counter-pressure beam (12) is abutted against the top surface of the middle beam (2) and the side beam (3), a plurality of third through holes are arranged on the cross beam (13), the two ends of the cross beam (13) are respectively detachably mounted on an anchor plate (4), the middle part of the cross beam (13) is abutted against the bottom surface of the middle beam (2), the counter-pressure bar (1101), the counter-pressure beam (12) and the cross beam (13) The two screw rods (15) are arranged parallel to each other, the bottom of the jack (14) is fixedly installed at the center of the back-pressure beam (12), the top of the jack (14) is fixedly installed at the center of the back-pressure bar (1101), the two screw rods (15) are symmetrically arranged, each of the screw rods (15) passes through the back-pressure bar (1101), the back-pressure beam (12) and the cross beam (13) through the first through hole, the second through hole and the third through hole, and one end of each screw rod (15) is detachably installed on the back-pressure bar (1101) through the first nut (17), and the other end is fixedly installed on the back-pressure bar (1101) through the first nut (17). 7) can be detachably mounted on the cross beam (13), and each screw rod (15) is perpendicular to the counter-pressure bar (1101), the two hook rails (16) are symmetrically arranged, each hook rail (16) passes through the counter-pressure bar (1101) and the counter-pressure beam (12) through the first through hole and the second through hole, and one end of each hook rail (16) is detachably mounted on the counter-pressure bar (1101) through the second nut (18), and the other end is abutted against the reserved steel bar (7), and each hook rail (16) is perpendicular to the counter-pressure bar (1101).

2. A bridge expansion joint installation and fixing frame according to claim 1, characterized in that: The hook rail (16) is provided with a first thread on its periphery, and a hook is provided at the bottom of the hook rail (16), and the hook is used to hook the reserved steel bar (7).

3. A bridge expansion joint installation and fixing frame according to claim 1, characterized in that: The first nut (17) is threadedly connected to the periphery of the screw rod (15), and the second nut (18) is threadedly connected to the first thread on the periphery of the hook rail (16).

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