Fabricated bridge expansion joint device and construction method

Abstract

The invention discloses an assembly type bridge expansion joint device and a construction method.The assembly type bridge expansion joint device comprises a deformation plate, a plurality of insertion rods are arranged on the deformation plate in a penetrating mode, the assembly type bridge expansion joint device further comprises at least two filling plates, and the two filling plates are arranged on the two sides of the deformation plate correspondingly; inserting grooves are formed in the side faces, close to each other, of the two filling plates, and the ends of the inserting rods extend into the inserting grooves. A plurality of groups of supporting mechanisms are arranged below the spliced surface of the deformation plate and the filling plate, the plurality of groups of supporting mechanisms are uniformly distributed in the length direction of the filling plate, and the end parts of the supporting mechanisms are inserted into the adjacent precast beams; according to the telescopic assembly, under the action of the supporting mechanism, the filling plate and the deformation plate can be installed in the expansion joint, then filling of the expansion joint is achieved, and convenience is provided for vehicle running; meanwhile, the situation that before the expansion joint device is installed, workers need to excavate installation grooves in adjacent bridges is avoided, the installation procedures of the expansion joint device are reduced, and the installation efficiency of the expansion joint is improved.

Description

Technical Field

[0001] The invention relates to the field of bridge expansion joint devices, and in particular to an assembled bridge expansion joint device and a construction method. Background Art

[0002] In order to improve the construction efficiency of bridges, the assembly construction method is generally used to build bridges, that is, multiple sections of assembled bridges are built on the constructed piers. In order to enable assembled bridges to adapt to complex environments, expansion joints are generally left between adjacent assembled bridges. The existence of expansion joints can make the bridge structure expand and contract with changes in temperature, and enable the bridge to adapt to creep caused by long-term loads.

[0003] In order to avoid the existence of expansion joints affecting the driving of vehicles, expansion devices are generally provided at the expansion joints, so that adjacent bridges can form a smooth driving surface. At present, the most common expansion device is a comb plate expansion joint device, and its structure can refer to a comb type bridge expansion joint device disclosed in a Chinese patent with publication number CN100491641C. From the content disclosed in the above patent, it can be seen that the comb type bridge expansion joint device includes a fixed comb plate and a movable comb plate respectively arranged on the beam body on both sides of the bridge expansion joint, wherein the movable comb plate is placed on the bridge expansion joint, and the fixed comb plate and the movable comb plate are respectively provided with comb teeth at their respective opposite ends and are arranged crosswise and spaced, and the comb teeth on the movable comb plate are located on the bridge expansion joint. Compared with the prior art, the comb type bridge expansion joint device provided by the patent enables the longitudinal expansion and contraction movement of the bridge to be completed on the bridge expansion joint, breaking through the limitation of the prior art that the relative expansion and contraction movement of the comb teeth of the movable comb plate and the fixed comb plate must be completed on the surface of the beam body, while ensuring the longitudinal expansion and contraction amount of the bridge, the length of the movable comb plate body is greatly shortened, and the manufacturing cost is reduced.

[0004] When installing the comb-type bridge expansion joint device at the expansion joint of the adjacent bridge, the staff needs to lay out according to the designed width, pay attention to the asymmetrical cutting on the left and right along the center line of the beam joint to form the installation groove, and clean up the asphalt concrete layer and debris in the groove area. In other words, when using the comb-type bridge expansion joint device to fill the expansion joint, the staff still needs to spend a long time to complete the processing of the installation groove. This method reduces the installation efficiency of the comb-type bridge expansion joint device, thereby affecting the construction progress of the entire bridge. Summary of the invention

[0005] The purpose of the present invention is to provide an assembled bridge expansion joint device and a construction method, aiming to improve the problem that the comb-type bridge expansion joint device used to fill bridge gaps has complicated installation and low efficiency.

[0006] The present invention is achieved in that: According to the first aspect of the present invention, the present invention provides an assembled bridge expansion joint device, including a deformation plate, on which a plurality of inserted rods are arranged through, and also including a filling plate, at least two filling plates are provided, the two filling plates are respectively arranged on both sides of the deformation plate, and slots are provided on the sides close to each other of the two filling plates, and the ends of the inserted rods extend into the slots; a plurality of groups of supporting mechanisms are arranged below the surface formed by the splicing of the deformation plate and the filling plate, and the plurality of groups of supporting mechanisms are evenly distributed along the length direction of the filling plate, and the ends are inserted into the adjacent prefabricated beams.

[0007] Preferably, the deformation plate is set as the first deformation plate, the first deformation plate is set as a rubber plate, the filling plate is set as the first filling plate, the length of the first filling plate is equal to the length of the first deformation plate, and the sides of the two first filling plates away from each other are respectively in contact with two adjacent prefabricated beams, and at the same time, second slots are provided on the sides of the two first filling plates close to each other, and the ends of the insertion rods are inserted into the second slots of the two first filling plates, and the ends of the insertion rods do not contact the end walls of the second slots.

[0008] Preferably, the supporting mechanism is configured as a first supporting mechanism, which includes a first rod body and two sets of first connecting mechanisms, wherein the two sets of first connecting mechanisms are both sleeved on the first rod body and connected to the first filling plate at the top.

[0009] Preferably, the first connecting mechanism includes a sleeve, a connecting rod and a first fastening bolt. A first connecting plate is fixedly arranged on the sleeve. A threaded hole and a second countersunk hole are arranged on the first connecting plate. The connecting rod passes through the second countersunk hole, and the bottom thread of the first fastening bolt is inserted into the threaded hole.

[0010] Preferably, a plurality of connecting holes are provided on the first rod body, and the first rod body passes through the sleeve, and the connecting rod is inserted into the connecting hole; a plurality of recessed grooves are provided on the lower side of the first filling plate, and a plurality of first countersunk holes are provided on the upper side, the sleeve is provided opposite to the recessed groove, and the top of the first fastening bolt is located in the first countersunk hole.

[0011] Preferably, the first rod body includes an intermediate rod and two end rods located on the same straight line, connecting grooves are provided on the end surfaces of the two end rods close to each other, and end columns are fixedly provided at the ends of the intermediate rod, and the end columns are inserted into the connecting grooves.

[0012] Preferably, the supporting mechanism is configured as a first supporting mechanism, the first supporting mechanism includes a second rod body and two sets of second connecting mechanisms, the second connecting mechanism includes a fixed arc plate and a clamping arc plate, the clamping arc plate is connected by a second fastening bolt and is arranged below the fixed arc plate, and the second rod body penetrates the space formed by the fixed arc plate and the clamping arc plate, a second connecting plate is fixedly arranged on the fixed arc plate, a threaded hole is arranged on the second connecting plate, and a first fastening bolt is threadedly inserted at the threaded hole, and the top of the first fastening bolt is located in the first countersunk hole.

[0013] Preferably, first slots are provided on the sides of two adjacent precast beams close to each other, the number of the first slots is equal to the number of the supporting mechanisms, and the ends of the first rod body or the second rod body are inserted into the first slots without contacting the end walls of the first slots.

[0014] Preferably, the deformation plate is set as a second deformation plate, the second deformation plate is set as a rubber plate, the filling plate is set as a second filling plate and a third filling plate, the length of the second filling plate and the third filling plate are both smaller than the length of the second deformation plate, and at least one second filling plate and a third filling plate are arranged on the same side of the second deformation plate, and the second filling plate and the third filling plate are arranged along the length direction of the second deformation plate; the supporting mechanism is set as a second supporting mechanism and a third supporting mechanism, the second supporting mechanism is arranged below the second filling plate, and the third supporting mechanism is arranged below the third filling plate.

[0015] According to a second aspect of the present invention, the present invention provides a construction method for a prefabricated bridge expansion joint device, which is used for the above-mentioned prefabricated bridge expansion joint device, comprising the following steps: Step 1: When the prefabricated beam is erected on the pier, the rod body and the cross plate are respectively inserted into the first slot and the polygonal slot, so as to realize the pre-installation of the rod body and the cross plate; Step 2: Install the corresponding number of snap plates on the horizontal plate according to the installation progress, that is, the two baffles are respectively arranged on both sides to achieve a stable and active connection between the snap plates and the horizontal plate; Step 3: After the snap plate is installed, the two second filling plates are arranged on both sides of the second deformable plate under the cooperation of the second slot and the insertion rod; the spliced ​​second filling plates and the second deformable plates are arranged on the sides of the plurality of snap plates, and the second filling plates and the second deformable plates are pushed toward the snap plate to move the second filling plates and the second deformable plates to corresponding positions; during the movement of the second filling plates and the second deformable plates, the snap plates are correspondingly moved into the snap grooves; Step 4: After the second filling plate is installed, the third filling plate is installed on the sleeve through the first fastening bolt connection, thereby achieving complete filling of the expansion joint and blocking the channel for the second filling plate to detach.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The telescopic assembly provided in the present invention can, under the action of the supporting mechanism, install the filling plate and the deformable member in the expansion joint, thereby achieving the filling of the expansion joint and providing convenience for vehicle driving; at the same time, it avoids the need for workers to cut installation grooves on adjacent bridges before installing the expansion joint device, thereby reducing the installation procedure of the expansion joint device and improving the installation efficiency of the expansion joint.

[0017] The present invention arranges an insertion rod through the deformation plate, and arranges a slot on the filling plate, and at the same time the end of the insertion rod is inserted into the slot, so as to realize the stable connection between the deformation plate and the filling plate; and utilizes the deformation characteristics of the deformation plate to provide support for the filling plate to move when the expansion joint changes; at the same time, the end of the insertion rod does not contact the end wall of the slot, so as to avoid affecting the movement of the filling plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a first schematic diagram of the installation and use of the present invention; Figure 2 is a first schematic diagram of a prefabricated beam structure of the present invention; Figure 3 is a schematic structural diagram of a first telescopic assembly of the present invention; Figure 4 is a schematic structural diagram of a first filling plate of the present invention; Figure 5 is a first schematic diagram of a first supporting mechanism structure of the present invention; Figure 6 is a structural schematic diagram of the first rod body of the present invention; Figure 7 is a structural schematic diagram of the first connecting mechanism of the present invention; Figure 8 is a second schematic diagram of the first supporting mechanism structure of the present invention; Fig. 9 is a structural schematic diagram of the second connecting mechanism of the present invention; Fig.10 is a schematic structural diagram of the second rod body of the present invention; Fig.11 is a second schematic diagram of the installation and use of the present invention; Fig.12 is a second schematic diagram of the prefabricated beam structure of the present invention; Fig.13 is a schematic structural diagram of a second telescopic assembly of the present invention; Fig.14 is a schematic structural diagram of a second filling plate of the present invention; Fig.15 is a schematic structural diagram of the second supporting mechanism of the present invention; Fig.16 is a schematic structural diagram of a third filling plate of the present invention; Fig.17 It is a structural schematic diagram of the second deformation plate of the present invention.

[0019] In the figure: 1, precast beam; 11, first slot; 12, polygonal slot; 2, first telescopic assembly; 21, first deformation plate; 22, first supporting mechanism; 23, first filling plate; 231, second slot; 232, recessed slot; 233, first countersunk hole; 24, first rod body; 242, end rod; 243, middle rod; 245, end column; 244, connecting slot; 25, first connecting mechanism; 251, sleeve; 252, first connecting plate; 255, first fastening bolt; 26, second connecting mechanism; 261, clamping arc plate; 262. Fixed arc plate; 263. Second connecting plate; 264. Second fastening bolt; 27. Second rod body; 271. First splicing rod; 272. Second splicing rod; 273. Threaded column; 274. Threaded groove; 3. Second telescopic assembly; 31. Second filling plate; 311. Snap groove; 312. Third slot; 32. Second supporting mechanism; 321. Cross plate; 322. Strip hole; 323. Baffle; 324. Snap plate; 33. Third filling plate; 331. Third supporting mechanism; 34. Second deformation plate; 341. Insert rod. DETAILED DESCRIPTION

[0020] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The following is a further description with reference to the accompanying drawings and specific embodiments: In order to avoid the need for workers to cut installation grooves on adjacent bridges before installing the expansion joint device, reduce the installation procedures of the expansion joint device, and improve the efficiency of the expansion joint installation, the present embodiment provides a new expansion joint device, that is, the expansion joint device can be directly installed between adjacent prefabricated beams 1 without the need for workers to perform prior operations.

[0022] In order to realize direct installation of the expansion joint device, it is necessary to set a groove on the end surface of the prefabricated beam 1 during processing. The function of the groove is to connect with the expansion joint device so that the expansion joint device can be stably installed relative to the prefabricated beam.

[0023] Specifically, the expansion joint device includes a deformation plate, a filling plate, a support mechanism, etc. The deformation plate is set as a rubber plate. By utilizing the deformation characteristics of the deformation plate, the deformation plate always cooperates with the filling plate to cover the expansion joint when the ends of the adjacent precast beams 1 move relative to each other, so as to avoid cracks in the road surface caused by the expansion and contraction of the expansion joint, which affects the driving of the vehicle. There are multiple filling plates, which are evenly arranged on both sides of the deformation plate and contact the end faces of the adjacent precast beams 1. The support mechanism is set into multiple groups, and the multiple groups of support mechanisms are evenly distributed along the length direction of the filling plate, and the ends are inserted into the grooves of the adjacent precast beams 1, and the top is stably connected to the filling plate. Therefore, under the action of the support mechanism, the filling plate is stably set in the adjacent precast beams 1, and the movement of the filling plate relative to the deformation plate can provide support for the filling of the expansion joint.

[0024] In order to connect the deformation plate with the filling plate, a plurality of insertion rods 341 are provided through the deformation plate. Slots are provided on the adjacent sides of the filling plates on both sides of the deformation plate, and the ends of the insertion rods 341 extend into the slots without contacting the end walls of the slots. Therefore, with the cooperation of the insertion rods 341 and the slots, the deformation plate and the filling plate are stably connected, and support is provided for the filling plate to move relative to the deformation plate. Example 1

[0025] like Figure 1-7 , Fig.17 As shown, in order to fill the expansion joint through the expansion joint device and facilitate the installation of the expansion joint device in the expansion joint. The deformation plate is set as the first deformation plate 21, and the filling plate is set as the first filling plate 23. The length of the first filling plate 23 is equal to the length of the first deformation plate 21, and can be the same as the width of the prefabricated beam 1. Therefore, under the action of one first deformation plate 21 and two first filling plates 23, the expansion joint can be filled. The support mechanism is set as the first support mechanism 22. Therefore, the first support mechanism 22, the first deformation plate 21 and the first filling plate 23 constitute the first telescopic assembly 2.

[0026] In order to stably connect the first deformation plate 21 and the first filling plate 23 , second slots 231 are provided on the sides of the two first filling plates 23 that are close to each other, and the ends of the insertion rods 341 are inserted into the second slots 231 of the two first filling plates 23 .

[0027] In order to stably install the first filling plate 23 in the expansion joint through the first supporting mechanism 22, the first supporting mechanism 22 includes a first rod body 24 and two sets of first connecting mechanisms 25. The two sets of first connecting mechanisms 25 are both sleeved on the first rod body 24, and the tops are connected to the first filling plate 23. At the same time, first slots 11 are arranged on the sides of two adjacent precast beams 1 that are close to each other. The number of first slots 11 is equal to that of the supporting mechanism, and the end of the first rod body 24 is inserted into the first slot 11, and the end does not contact the end wall of the first slot 11. However, the end of the first rod body 24 will not be separated from the first slot 11. Therefore, under the action of the first rod body 24, the first connecting mechanism 25 and the first filling plate 23 can be stably supported, and at the same time, it is convenient for the relative movement of the ends of the adjacent precast beams 1 to realize the expansion and contraction of the expansion joint. In the case where the first rod body 24 and the first slot 11 are arranged, the first rod body 24 needs to be installed on the precast beam 1 when the precast beam 1 is installed.

[0028] In order to facilitate the installation of the first rod body 24 on the prefabricated beam 1, the first rod body 24 includes an intermediate rod 243 and two end rods 242 located on the same straight line, and connecting grooves 244 are provided on the end surfaces of the two end rods 242 that are close to each other, and an end column 245 is fixedly provided at the end of the intermediate rod 243, and the end column 245 is inserted into the connecting groove 244. Because the first rod body 24 is arranged to be spliced, when installing the expansion joint device, the two end rods 242 can be respectively inserted into the first slots 11 of the adjacent prefabricated beams 1, and then the intermediate rod 243 is installed between the two end rods 242. In actual construction, the end column 245 can be inserted into the connecting groove 244 by bolt connection, and can also be inserted into the connecting groove 244 by welding.

[0029] In order to realize the connection between the first rod body 24 and the first filling plate 23, the first connecting mechanism 25 includes a sleeve 251 and a first fastening bolt 255. The sleeve 251 is sleeved on the first rod body 24 and is arranged opposite to the concave groove 232 on the lower side of the first filling plate 23. A first connecting plate 252 is fixedly arranged on the sleeve 251, a threaded hole is arranged on the first connecting plate 252, and the bottom of the first fastening bolt 255 is threadedly inserted into the threaded hole. A plurality of first countersunk holes 233 are arranged on the upper side of the first filling plate 23, and the top of the first fastening bolt 255 is located in the first countersunk hole 233. Therefore, under the action of the first fastening bolt 255, the first filling plate 23 is connected to the sleeve 251, and the sleeve 251 is sleeved on the first rod body 24, so that the first filling plate 23 is stably connected to the first rod body 24, and it is convenient for the first filling plate 23 to move relative to the first rod body 24, so that the expansion joint can be expanded and contracted.

[0030] The first supporting mechanism 22 is used to stably support the first deformable plate 21 and the first filling plate 23 in the expansion joint, and the following steps need to be performed.

[0031] Step 1: When the prefabricated beam 1 is erected on the pier, the first rod body 24 is inserted into the first slot 11 , so that the first rod body 24 is pre-installed.

[0032] Step 2: When the first rod body 24 is pre-installed, the sleeve 251 is sleeved on the first rod body 24 to achieve the installation of the sleeve 251.

[0033] Step 3: When installing the first deformable plate 21 and the first filling plate 23 , firstly, with the cooperation of the second slot 231 and the insertion rod 341 , the two first filling plates 23 are arranged on both sides of the first deformable plate 21 and laid on the multiple sleeves 251 .

[0034] Step 4: The first fastening bolt 255 is set through the first filling plate 23, and the end is threadedly inserted into the sleeve 251. Example 2

[0035] like Figure 8-10 , Fig.17 As shown, in order to fill the expansion joint through the expansion joint device and facilitate the installation of the expansion joint device in the expansion joint. The deformation plate is set as the first deformation plate 21, and the filling plate is set as the first filling plate 23. The length of the first filling plate 23 is equal to the length of the first deformation plate 21, and can be the same as the width of the prefabricated beam 1. Therefore, under the action of one first deformation plate 21 and two first filling plates 23, the expansion joint can be filled. The support mechanism is set as the first support mechanism 22. Therefore, the first support mechanism 22, the first deformation plate 21 and the first filling plate 23 constitute the first telescopic assembly 2.

[0036] In order to stably connect the first deformation plate 21 and the first filling plate 23 , second slots 231 are provided on the sides of the two first filling plates 23 that are close to each other, and the ends of the insertion rods 341 are inserted into the second slots 231 of the two first filling plates 23 .

[0037] In order to stably install the first filling plate 23 in the expansion joint through the first supporting mechanism 22, the first supporting mechanism 22 includes a second rod body 27 and two sets of second connecting mechanisms 26. The second connecting mechanism 26 includes a fixed arc plate 262 and a clamping arc plate 261. The clamping arc plate 261 is connected by a second fastening bolt 264 and is arranged below the fixed arc plate 262. The second rod body 27 penetrates the space formed by the fixed arc plate 262 and the clamping arc plate 261. This arrangement makes it easy to put the second connecting mechanism 26 on the second rod body 27 after the second rod body 27 is pre-installed. At the same time, first slots 11 are provided on the sides of two adjacent precast beams 1 that are close to each other. The number of the first slots 11 is equal to that of the supporting mechanism, and the end of the first rod 24 is inserted into the first slot 11, and the end does not contact the end wall of the first slot 11. However, the end of the first rod 24 will not be separated from the first slot 11. Therefore, under the action of the first rod 24, the first connecting mechanism 25 and the first filling plate 23 can be stably supported, and at the same time, the relative movement of the ends of the adjacent precast beams 1 to realize the expansion and contraction of the expansion joint is facilitated. A second connecting plate 263 is fixedly arranged on the fixed arc plate 262, and a threaded hole is arranged on the second connecting plate 263, and a first fastening bolt 255 is threadedly inserted in the threaded hole. A plurality of first countersunk holes 233 are arranged on the upper side of the first filling plate 23, and the top of the first fastening bolt 255 is located in the first countersunk hole 233. Therefore, under the action of the first fastening bolt 255, the first filling plate 23 is connected to the sleeve 251, and the sleeve 251 is sleeved on the first rod 24, so that the first filling plate 23 is stably connected to the first rod 24, and the first filling plate 23 is convenient to move relative to the first rod 24, so that the expansion joint can be expanded and contracted.

[0038] In order to facilitate the installation of the second rod body 27 on the prefabricated beam 1, the second rod body 27 includes a second splice rod 272 and two first splice rods 271. The two first splice rods 271 are arranged in parallel at both ends of the second splice rod 272, and the end surfaces close to each other are both provided with thread grooves 274. A threaded column 273 is fixedly arranged on the end surface of the second splice rod 272, and the threaded column 273 is threadedly inserted into the thread groove 274. Therefore, when installing the second rod body 27, the first splice rod 271 can be installed in the prefabricated beam 1 first, and then the two first splice rods 271 are connected through the second splice rod 272.

[0039] The first supporting mechanism 22 is used to stably support the first deformable plate 21 and the first filling plate 23 in the expansion joint, and the following steps need to be performed.

[0040] Step 1: When the prefabricated beam 1 is erected on the pier, the second rod body 27 is inserted into the first slot 11 , so that the second rod body 27 is pre-installed.

[0041] Step 2: When installing the first deformable plate 21 and the first filling plate 23 , firstly, under the action of the second fastening bolt 264 , the fixed arc plate 262 and the clamping arc plate 261 are spliced ​​and sleeved on the second rod body 27 .

[0042] Step 3: With the cooperation of the second slot 231 and the insertion rod 341 , the two first filling plates 23 are arranged on both sides of the first deformation plate 21 and laid on the plurality of fixed arc plates 262 .

[0043] Step 4: The first fastening bolt 255 is set through the first filling plate 23, and the end is threadedly inserted into the sleeve 251. Example 3

[0044] like Figure 11-17 As shown, in order to fill the expansion joint through the expansion joint device and facilitate the installation of the expansion joint device in the expansion joint, the deformation plate is set as the second deformation plate 34, the second deformation plate 34 is set as a rubber plate, and the filling plate is set as the second filling plate 31 and the third filling plate 33. The lengths of the second filling plate 31 and the third filling plate 33 are both shorter than the length of the second deformation plate 34, and at least one second filling plate 31 and the third filling plate 33 are set on the same side of the second deformation plate 34, and the second filling plate 31 and the third filling plate 33 are set along the length direction of the second deformation plate 34. In addition, an insertion rod 341 is provided through the second deformation plate 34. At the same time, a third slot 312 and a second slot 231 are provided on the sides of the second filling plate 31 and the third filling plate 33 located on both sides of the second deformation plate 34 where they are close to each other. The end of the insertion rod 341 is inserted into the third slot 312 and the second slot 231, and the end of the insertion rod 341 does not contact the end wall of the third slot 312 and the second slot 231. Therefore, when the second deformation plate 34 is stably connected with the second filling plate 31 and the third filling plate 33, it is convenient for the second filling plate 31 and the third filling plate 33 to move relative to the second deformation plate 34 to realize the contraction of the expansion joint.

[0045] The supporting mechanism is provided as a second supporting mechanism 32 and a third supporting mechanism 331, wherein the second supporting mechanism 32 is provided below the second filling plate 31, and the third supporting mechanism 331 is provided below the third filling plate 33, and the ends of the second supporting mechanism 32 and the third supporting mechanism 331 are inserted into the adjacent precast beam 1, thereby supporting the second filling plate 31 and the third filling plate 33 to be stably provided in the adjacent precast beam 1. The second deformation plate 34, the second filling plate 31, the third filling plate 33, the second supporting mechanism 32 and the third supporting mechanism 331 constitute the second telescopic assembly 3.

[0046] In practice, the third filling plate 33 and the third support 332 in this embodiment have the same structure as the first filling plate 23 and the first support mechanism 22 in other embodiments. The difference is that the lengths of the third filling plate 33 and the first filling plate 23 are different. Therefore, the third filling plate 33 and the third support 332 are not introduced here.

[0047] In order to stably install the second filling plate 31 in the expansion joint, the second supporting mechanism 32 includes a transverse plate 321, a snap plate 324, etc., a bar hole 322 is provided on the transverse plate 321, and the bar hole 322 is arranged along the length direction of the transverse plate 321, two snap plates 324 are provided, and are vertically arranged above the transverse plate 321, and a baffle plate 323 is fixedly arranged below the snap plate 324, and a connecting bolt is provided through the baffle plate 323, and the connecting bolt is provided through the bar hole 322, or a connecting shaft is provided through the baffle plate 323, and pins are provided at both ends of the connecting shaft, etc., in short, the snap plate 324 is stably and movably installed on the transverse plate 321. In addition, a snap groove 311 is provided on the lower side of the second filling plate 31, and the snap groove 311 is provided along the length direction of the second filling plate 31, and one end is set to be open. When the second filling plate 31 is installed on the second supporting mechanism 32 , the snap plate 324 is located in the snap groove 311 , and the second filling plate 31 moves on the multiple sets of second supporting mechanisms 32 , so that the second filling plate 31 can be stably set in the expansion joint.

[0048] In order to stably arrange the second supporting mechanism 32 relative to the precast beam 1 , a polygonal groove 12 is arranged on the end face of the precast beam 1 , and the polygonal groove 12 is adapted to the cross plate 321 , so that the end of the cross plate 321 is inserted into the polygonal groove 12 and does not contact the end wall of the polygonal groove 12 .

[0049] The second supporting mechanism 32 and the third supporting mechanism 331 are used to stably support the first deformable plate 21 and the first filling plate 23 in the expansion joint. The following steps are required: Step 1: When the prefabricated beam 1 is erected on the pier, the rod body and the cross plate 321 are respectively inserted into the first slot 11 and the polygonal slot 12, so as to realize the pre-installation of the rod body and the cross plate 321.

[0050] Step 2: According to the installation progress, the corresponding number of snap plates 324 are installed on the horizontal plate 321, that is, the two baffles 323 are respectively arranged on both sides of 321, so as to realize the stable and active connection between the snap plates 324 and the horizontal plate 321.

[0051] Step 3: After the snap plate 324 is installed, the two second filling plates 31 are arranged on both sides of the second deformable plate 34 in cooperation with the second slot 231 and the insertion rod 341. The spliced ​​second filling plates 31 and the second deformable plates 34 are arranged on the sides of the plurality of snap plates 324, and the second filling plates 31 and the second deformable plates 34 are pushed toward the snap plate 324 to move the second filling plates 31 and the second deformable plates 34 to the corresponding positions. During the movement of the second filling plates 31 and the second deformable plates 34, the snap plate 324 moves to the snap groove 311 accordingly.

[0052] Step 4: After the second filling plate 31 is installed, the third filling plate 33 is connected and installed on the sleeve 251 through the first fastening bolts 255, thereby achieving complete filling of the expansion joint and blocking the channel for the second filling plate 31 to detach.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An assembled bridge expansion joint device, characterized in that: It comprises a deformation plate, on which a plurality of insertion rods (341) are arranged to penetrate, and a filling plate, at least two filling plates are arranged, the two filling plates are arranged on both sides of the deformation plate respectively, and slots are arranged on the sides close to each other of the two filling plates, and the ends of the insertion rods (341) extend into the slots; a plurality of groups of support mechanisms are arranged below the surface formed by the splicing of the deformation plate and the filling plate, the plurality of groups of support mechanisms are evenly distributed along the length direction of the filling plate, and the ends are inserted into adjacent prefabricated beams (1).

2. The assembled bridge expansion joint device according to claim 1, characterized in that: The deformation plate is set as a first deformation plate (21), the first deformation plate (21) is set as a rubber plate, the filling plate is set as a first filling plate (23), the length of the first filling plate (23) is equal to the length of the first deformation plate (21), and the sides of the two first filling plates (23) that are far away from each other are respectively in contact with two adjacent prefabricated beams (1), and at the same time, the sides of the two first filling plates (23) that are close to each other are both provided with second slots (231), the ends of the insertion rod (341) are inserted into the second slots (231) of the two first filling plates (23), and the ends of the insertion rod (341) do not contact the end wall of the second slot (231).

3. The assembled bridge expansion joint device according to claim 2, characterized in that: The support mechanism is configured as a first support mechanism (22), the first support mechanism (22) comprising a first rod body (24) and two sets of first connecting mechanisms (25), the two sets of first connecting mechanisms (25) being sleeved on the first rod body (24) and having their tops connected to the first filling plate (23).

4. The assembled bridge expansion joint device according to claim 3, characterized in that: The first connection mechanism (25) comprises a sleeve (251) and a first fastening bolt (255), a first connecting plate (252) is fixedly arranged on the sleeve (251), a threaded hole is arranged on the first connecting plate (252), and the bottom thread of the first fastening bolt (255) is inserted into the threaded hole.

5. The assembled bridge expansion joint device according to claim 4, characterized in that: A plurality of recessed grooves (232) are arranged on the lower side of the first filling plate (23), and a plurality of first countersunk holes (233) are arranged on the upper side; the sleeve (251) is arranged opposite to the recessed grooves (232), and the top of the first fastening bolt (255) is located in the first countersunk hole (233).

6. The assembled bridge expansion joint device according to claim 4, characterized in that: The first rod body (24) comprises an intermediate rod (243) and two end rods (242) located on the same straight line, and connecting grooves (244) are arranged on the end surfaces of the two end rods (242) close to each other, and end columns (245) are fixedly arranged at the ends of the intermediate rod (243), and the end columns (245) are inserted into the connecting grooves (244).

7. The assembled bridge expansion joint device according to claim 6, characterized in that: The support mechanism is set as a first support mechanism (22), the first support mechanism (22) includes a second rod body (27) and two sets of second connecting mechanisms (26), the second connecting mechanism (26) includes a fixed arc plate (262) and a clamping arc plate (261), the clamping arc plate (261) is connected and arranged below the fixed arc plate (262) through a second fastening bolt (264), and the second rod body (27) penetrates the space formed by the fixed arc plate (262) and the clamping arc plate (261), a second connecting plate (263) is fixedly arranged on the fixed arc plate (262), a threaded hole is arranged on the second connecting plate (263), and a first fastening bolt (255) is threadedly inserted at the threaded hole, and the top of the first fastening bolt (255) is located in the first countersunk hole (233).

8. The assembled bridge expansion joint device according to claim 7, characterized in that: First slots (11) are provided on the sides of two adjacent prefabricated beams (1) that are close to each other, the number of the first slots (11) being equal to the number of the supporting mechanisms, and the ends of the first rod bodies (24) or the second rod bodies (27) are inserted into the first slots (11), while the ends do not contact the end walls of the first slots (11).

9. The assembled bridge expansion joint device according to claim 8, characterized in that: The deformation plate is set as a second deformation plate (34), the second deformation plate (34) is set as a rubber plate, the filling plates are set as a second filling plate (31) and a third filling plate (33), the lengths of the second filling plate (31) and the third filling plate (33) are both shorter than the length of the second deformation plate (34), and at least one second filling plate (31) and a third filling plate (33) are arranged on the same side of the second deformation plate (34), and the second filling plate (31) and the third filling plate (33) are arranged along the length direction of the second deformation plate (34); the supporting mechanism is set as a second supporting mechanism (32) and a third supporting mechanism (331), the second supporting mechanism (32) is arranged below the second filling plate (31), and the third supporting mechanism (331) is arranged below the third filling plate (33).

10. A construction method for an assembled bridge expansion joint device, used in the assembled bridge expansion joint device according to claim 9, characterized in that: The steps include: Step 1: When the prefabricated beam (1) is erected on the pier, the rod body and the cross plate (321) are respectively inserted into the first slot (11) and the polygonal slot (12), so that the rod body and the cross plate (321) are pre-installed; Step 2: Install a corresponding number of snap plates (324) on the horizontal plate (321) according to the installation progress, that is, two baffles (323) are respectively arranged on both sides of (321) to achieve a stable and movable connection between the snap plates (324) and the horizontal plate (321); Step 3: After the snap plate (324) is installed, the two second filling plates (31) are arranged on both sides of the second deformable plate (34) in cooperation with the second slot (231) and the insertion rod (341); the spliced ​​second filling plates (31) and the second deformable plates (34) are arranged on the sides of the plurality of snap plates (324), and the second filling plates (31) and the second deformable plates (34) are pushed toward the snap plate (324) to move the second filling plates (31) and the second deformable plates (34) to corresponding positions; during the movement of the second filling plates (31) and the second deformable plates (34), the snap plate (324) moves to the snap groove (311) accordingly; Step 4: After the second filling plate (31) is installed, the third filling plate (33) is connected and installed on the sleeve (251) through the first fastening bolt (255), thereby achieving complete filling of the expansion joint and blocking the channel for the second filling plate (31) to detach.

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