Detachable deformation joint structure convenient to maintain

Abstract

The utility model relates to a detachable deformation joint structure convenient to maintain, which is applied to a deformation joint between concrete on two sides and comprises a water stop belt, embedded steel boxes are arranged in the concrete on two sides of the deformation joint, the upper surfaces of the embedded steel boxes and the surface of the concrete are arranged as high as each other, and the water stop belt is arranged in the embedded steel boxes. Fixing steel bars used for fixing the embedded steel boxes are arranged in the concrete, the fixing steel bars are fixedly connected with the embedded steel boxes, the water stop belt is arranged in the deformation joint, and the two ends of the water stop belt are fixed to the corresponding embedded steel boxes respectively. The device can be completely installed after construction of reinforced concrete structures on the two sides of the deformation joint is completed, deviation and damage to the embedded water stop belt in the construction process of the reinforced concrete structures on the two sides of the deformation joint can be avoided, the water stop belt can be easily and conveniently replaced after being aged and damaged, and the construction efficiency is improved. Operation is simple, and maintenance cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal facilities, in particular to a detachable deformation joint structure which is easy to maintain. Background Art

[0002] In municipal and construction projects with generally larger sizes, such as box culverts, tunnel culverts, basements, and ground buildings, it is necessary to set expansion joints between concrete structures due to deformation of the foundation and thermal expansion and contraction of concrete structures caused by temperature changes. At the same time, in order to prevent water leakage from the expansion joints, it is necessary to install waterstops at the expansion joints. The common forms of waterstops are embedded waterstops and external waterstops. Both forms of waterstops need to be installed before pouring concrete on both sides of the expansion joints. In this way, the concrete construction on both sides of the expansion joints is prone to cause the waterstops to deviate and be damaged, resulting in the expansion joint waterstops failing to achieve the designed waterstop effect.

[0003] At the same time, the waterstop used in municipal and construction projects is usually a rubber waterstop. Although the rubber waterstop has excellent deformation ability, the durability of the rubber waterstop in underground and open-air environments is insufficient, which does not match the design service life of the entire structural project. Therefore, it is necessary to repair the deformation joint after the rubber waterstop of the deformation joint ages. The traditional buried and external waterstops are cast together with the concrete structure. The maintenance of the deformation joint and the replacement of the waterstop are difficult and the workload is huge. If not handled properly, new leakage points are likely to occur. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a detachable and easy-to-maintain expansion joint structure in view of the deficiencies of the above-mentioned prior art, which can effectively solve the problems of the expansion joint water stop being displaced and damaged due to construction, as well as the difficulty of subsequent maintenance and replacement.

[0005] The utility model provides a technical solution to the above-mentioned technical problems as follows: a detachable and easy-to-maintain expansion joint structure, applied to the expansion joint between concrete on both sides, including a waterstop, embedded steel boxes are arranged in the concrete on both sides of the expansion joint, the upper surface of the embedded steel box is arranged at the same height as the surface of the concrete, fixed steel bars for fixing the embedded steel boxes are arranged in the concrete, and the fixed steel bars are connected and fixed to the embedded steel boxes, the waterstop is arranged in the expansion joint, and its two ends are respectively fixed to the corresponding embedded steel boxes.

[0006] The beneficial effects of the utility model are as follows: the detachable and easy-to-maintain expansion joint structure of the utility model can be installed completely after the construction of the reinforced concrete structures on both sides of the expansion joint is completed, which can avoid the displacement and damage of the embedded waterstop during the construction of the reinforced concrete structures on both sides of the expansion joint, and the waterstop can be replaced relatively simply and conveniently after aging and damage occurs, with simple operation and low maintenance cost.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows:

[0008] Further: the waterstop is a rubber waterstop, and the rubber waterstop is provided with a plurality of circular holes at intervals along its longitudinal direction.

[0009] The beneficial effect of the above further scheme is: by adopting a rubber waterstop, it has good elastic forming characteristics, and by setting circular holes, on the one hand, the accumulated water can be discharged in time, and on the other hand, the deformation of the rubber waterstop under the action of water pressure or other forces can be reduced.

[0010] Further: the waterstop is a copper sheet waterstop, and rubber pads are melt-welded at both ends of the copper sheet waterstop, and the copper sheet waterstop and the rubber pad are provided with a plurality of circular holes at intervals along the longitudinal direction of the copper sheet waterstop.

[0011] The beneficial effect of the above further scheme is: by adopting the copper sheet waterstop, on the one hand, it can prevent the penetration of water and air and reduce the noise transmission; on the other hand, the copper sheet waterstop has strong corrosion resistance. Even if the oxidized chloride is firmly wrapped on the waterstop, its oxidation effect can isolate the air humidity and the liquid of the water conservancy project, so as to extend the life of the waterstop.

[0012] Further: the embedded steel box includes a steel cover plate, mounting bolts, a first side steel plate, a bottom steel plate and a second side steel plate, the first side steel plate and the second side steel plate are respectively connected to the bottom steel plate, the steel cover plate is respectively connected to the first side steel plate and the second side steel plate through the mounting bolts, and the internal space formed by the steel cover plate, the first side steel plate, the bottom steel plate and the second side steel plate is filled with internal filler.

[0013] The beneficial effect of the above further scheme is that a local sealed space can be formed by the steel cover plate, the first side steel plate, the bottom steel plate and the second side steel plate, and filled with internal fillers, which is convenient for the concrete construction process on both sides of the expansion joint. It is only necessary to install the embedded steel box, which can effectively prevent the water stop belt from being displaced and damaged during the pouring, vibration and other construction processes of concrete.

[0014] Further: the lengths of the steel cover plate, the first side steel plate, the bottom steel plate and the second side steel plate are respectively equal to the lengths of the deformation joint, and the width of the bottom steel plate is equal to the width of the steel cover plate.

[0015] The beneficial effect of the above further scheme is: by setting the lengths of the steel cover plate, the first side steel plate, the bottom steel plate and the second side steel plate to be equal to the lengths of the deformation joint respectively, and the width of the bottom steel plate to be equal to the width of the steel cover plate, the embedded steel box can be arranged along the entire length of the deformation joint, thereby simplifying the construction difficulty.

[0016] Further: the steel cover plate, the first side steel plate, the bottom steel plate and the second side steel plate are all made of stainless steel, and the internal filler is asphalt hemp.

[0017] The beneficial effect of the above further solution is that by adopting stainless steel material and filling asphalt hemp fiber, the corrosion resistance can be greatly improved, and the embedded steel box can be effectively prevented from being corroded.

[0018] Further: the detachable and easily maintainable deformation joint structure also includes a fixed steel plate, and the two ends of the water stop strip are respectively installed on the embedded steel box through the fixed steel plate.

[0019] The beneficial effect of the above further scheme is that by setting the fixed steel plate, the waterstop can be installed on the embedded steel box more conveniently. At the same time, when the waterstop reaches its designed service life or is damaged during daily operation and maintenance, the fixed steel plate can be removed and the waterstop can be replaced very conveniently, which is convenient for maintenance.

[0020] Further: the fixed steel plate is formed by multiple pieces stacked on each other, and a wire screw is welded at the centroid position of each fixed steel plate by perforation plug welding. The fixed steel plate installs the water stop belt on the embedded steel box on both sides of the deformation joint through the wire screw and the fixing nut matching the wire screw.

[0021] The beneficial effect of the above further scheme is that multiple fixed steel plates can be fastened to the embedded steel box through the wire screw, and then the water stop strip can be installed on the embedded steel box on both sides of the deformation joint, which is firmly installed and easy to disassemble.

[0022] Further: the fixed steel plate is tongue-shaped at the end in the length direction, and the width of the tongue is 2cm-3cm, and the thickness is half of the thickness of the fixed steel plate. Multiple fixed steel plates are overlapped and sealed together through the tongue.

[0023] The beneficial effect of the above further solution is that by setting the fixed steel plate to be tongue-and-groove-shaped at the end in the length direction, multiple fixed steel plates can be stacked together to form a very good sealing effect to avoid water seepage.

[0024] Further: the width of the deformation joint is 3cm-5cm, and the deformation joint is filled with asphalt fir board or closed-cell polyethylene foam board.

[0025] The beneficial effect of the above further scheme is that by filling the asphalt fir board or the closed-cell polyethylene foam board, on the one hand, its waterproof effect can be utilized to ensure that the expansion joint of the bridge is not soaked and corroded by rainwater, and on the other hand, vibration can be reduced and noise can be lowered. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a top view of a detachable deformation joint structure that is easy to maintain according to an embodiment of the utility model;

[0027] Figure 2 This is a schematic cross-sectional structure diagram of a detachable deformation joint structure that is easy to maintain according to an embodiment of the utility model;

[0028] Figure 3 This is a schematic diagram of the cross-sectional structure of a copper sheet water stop strip according to an embodiment of the utility model;

[0029] Figure 4 It is a schematic diagram of the cross-sectional structure of the embedded steel box of one embodiment of the utility model;

[0030] Figure 5 This is a schematic diagram of the top view of the structure of the embedded steel box steel cover plate of one embodiment of the utility model;

[0031] Figure 6 It is a side structural schematic diagram of the first side steel plate of the embedded steel box according to one embodiment of the utility model;

[0032] Figure 7 It is a side structural schematic diagram of the second side steel plate of the embedded steel box according to one embodiment of the utility model;

[0033] Figure 8 A top view of the mounting bolt holes of the first and second side steel plates of the embedded steel box according to an embodiment of the utility model;

[0034] Fig. 9 This is a side structural schematic diagram of a fixed steel plate according to an embodiment of the utility model;

[0035] Fig.10 for Fig. 9 The detailed drawing of the large sample at A in the middle;

[0036] Fig.11The figure is a side structural schematic diagram of a threaded screw and a fixing nut according to an embodiment of the utility model.

[0037] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0038] 1. Concrete, 2. Expansion joint, 3. Fixed steel bars, 4. Water stop, 5. Embedded steel box, 6. Fixed steel plate;

[0039] 401, rubber pad, 501, steel cover plate, 502, mounting bolts, 503, first side steel plate, 504, bottom steel plate, 505, second side steel plate, 506, internal filler, 601, wire screw, 602, fixing nut;

[0040] 50101, steel cover plate mounting hole, 50301, first side steel plate mounting bolt hole, 50501, mounting notch, 50502, second side steel plate mounting bolt hole. DETAILED DESCRIPTION

[0041] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0042] like Figure 1 and Figure 2 As shown, a detachable and easy-to-maintain expansion joint structure is applied to the expansion joint 2 between the concrete 1 on both sides, including a waterstop 4, embedded steel boxes 5 are arranged in the concrete 1 on both sides of the expansion joint 2, and the upper surface of the embedded steel box 5 is arranged at the same height as the surface of the concrete 1, and fixed steel bars 3 for fixing the embedded steel box 5 are arranged in the concrete 1, and the fixed steel bars 3 are connected and fixed to the embedded steel box 5, and the waterstop 4 is arranged in the expansion joint 2, and its two ends are respectively fixed on the corresponding embedded steel boxes 5.

[0043] The utility model is a detachable and easy-to-maintain expansion joint structure. After the concrete 1 on both sides of the expansion joint 2 is poured, the water stop 4 is installed on the embedded steel boxes 5 on both sides of the expansion joint through the fixed steel plates 6. In this way, during the concrete construction process on both sides of the expansion joint, only the embedded steel boxes 5 need to be installed, which can effectively prevent the concrete 1 from being displaced and damaged during the pouring, vibrating and other construction processes. Moreover, after the water stop 4 is aged or damaged, it can be replaced relatively simply and conveniently, which is simple to operate and has low maintenance costs.

[0044] In the embodiment of the present invention, the width of the deformation joint 2 is usually 3 cm to 5 cm. Optionally, the width of the deformation joint 2 is 4 cm.

[0045] Here, the waterstop 4 is a finished component, and common forms include rubber waterstop and copper sheet waterstop.

[0046] In one or more embodiments of the utility model, the waterstop 4 is a rubber waterstop, and the rubber waterstop is provided with a plurality of circular holes at intervals along its longitudinal direction. By adopting a rubber waterstop, it has good elastic forming characteristics, and by providing circular holes, on the one hand, the accumulated water can be discharged in time, and on the other hand, the deformation of the rubber waterstop under the action of water pressure or other forces can be reduced. Here, the longitudinal spacing of the rubber waterstop is 15 cm, and circular holes with a diameter of 1.4 cm are reserved. The center of the circular hole is 5 cm away from the end of the waterstop. The performance requirements of the waterstop such as thickness, length, and tensile strength are selected according to parameters such as the water pressure that the deformation joint 2 needs to withstand and the estimated deformation amount.

[0047] like Figure 3 As shown, in one or more embodiments of the utility model, the water stop 4 is a copper sheet water stop, and the two ends of the copper sheet water stop are melt-welded with rubber pads 401, and the copper sheet water stop and the rubber pad 401 are longitudinally spaced with multiple circular holes. By using the copper sheet water stop, on the one hand, water and air penetration can be prevented, and noise propagation can be reduced. On the other hand, the copper sheet water stop has a strong corrosion resistance. Even if the oxidized chloride is firmly wrapped on the water stop, its oxidation effect can isolate the air humidity and the liquid of the water conservancy project, so that the life of the water stop is longer. Here, the end of the copper sheet water stop is 10 cm and the rubber pad 401 are welded together by hot melt. The longitudinal spacing of the water stop 4 and the rubber pad 401 is 15 cm, and a circular hole with a diameter of 1.4 cm is reserved. The center of the circular hole is 5 cm away from the end of the water stop. The thickness, length, tensile strength and other performance requirements of the copper sheet water stop are selected according to the water pressure and estimated deformation parameters required by the deformation joint 2.

[0048] like Figures 4 to 8 As shown, in one or more embodiments of the utility model, the embedded steel box 5 includes a steel cover plate 501, a mounting bolt 502, a first side steel plate 503, a bottom steel plate 504 and a second side steel plate 505, the first side steel plate 503 and the second side steel plate 505 are respectively connected to the bottom steel plate 504, the steel cover plate 501 is respectively connected to the first side steel plate 503 and the second side steel plate 505 through the mounting bolt 502, and the internal space formed by the steel cover plate 501, the first side steel plate 503, the bottom steel plate 504 and the second side steel plate 505 is filled with an internal filler 506. A local sealed space can be formed by the steel cover plate 501, the first side steel plate 503, the bottom steel plate 504 and the second side steel plate 505, and the internal filler 506 is filled, so that during the concrete construction process on both sides of the deformation joint, only the embedded steel box 5 needs to be installed, which can effectively prevent the concrete 1 from causing the water stop 4 to be displaced and damaged during the pouring, vibrating and other construction processes.

[0049] Optionally, in one or more embodiments of the present invention, the lengths of the steel cover plate 501, the first side steel plate 503, the bottom steel plate 504, and the second side steel plate 505 are respectively equal to the length of the deformation joint 2, and the width of the bottom steel plate 504 is equal to the width of the steel cover plate 501. By setting the lengths of the steel cover plate 501, the first side steel plate 503, the bottom steel plate 504, and the second side steel plate 505 to be respectively equal to the length of the deformation joint 2, and the width of the bottom steel plate 504 is equal to the width of the steel cover plate 501, the embedded steel box 5 can be arranged along the entire length of the deformation joint 2, thereby simplifying the construction difficulty.

[0050] In practice, the steel cover plate 501 has a length consistent with that of the deformation joint 2, a width of 14 cm, and a thickness of 0.2 cm. The steel cover plate 501 has a 0.3 cm steel cover plate mounting hole 50101 reserved at 1 cm from the end in the width direction, and the spacing of the mounting holes in the length direction is 15 cm. The mounting bolts 502 are M2.5 bolts. The first side steel plate 503 has a length consistent with that of the deformation joint 2, a height of 10 cm, and a thickness of usually 2 cm. A first side steel plate mounting bolt hole 50301 with an internal thread matching the mounting bolt 502 is reserved at the top of the first side steel plate 503, and the spacing of the first side steel plate mounting bolt holes 50301 is 15 cm. The bottom steel plate 504 has a length consistent with that of the deformation joint 2, a width consistent with that of the steel cover plate 501, usually 14 cm, and a thickness of 1 cm. The second side steel plate 505 has a length consistent with that of the deformation joint 2, a height of 10 cm, and a thickness of usually 2 cm. A second side steel plate mounting bolt hole 50502 with an internal thread matching the mounting bolt 502 is reserved at the top of the second side steel plate 505, and the hole corresponds to the first side steel plate mounting bolt hole 50301 reserved in the first side steel plate 503. At the same time, a mounting notch 50501 with a width of 1.6 cm and a depth of 5 cm is reserved at the top of the second side steel plate 504. The spacing between the second side steel plate mounting bolt hole 50502 and the mounting notch 50501 is 15 cm, and the two are arranged at intervals.

[0051] Optionally, in one or more embodiments of the utility model, the steel cover plate 501, the first side steel plate 503, the bottom steel plate 504 and the second side steel plate 505 are all made of stainless steel, and the internal filler 506 is asphalt hemp. By using stainless steel and filling asphalt hemp, the corrosion resistance can be greatly improved, and the embedded steel box 5 can be effectively prevented from being corroded.

[0052] like Fig. 9 and 10As shown, in one or more embodiments of the utility model, the detachable and easily maintainable deformation joint structure further includes a fixed steel plate 6, and the two ends of the waterstop 4 are respectively mounted on the embedded steel box 5 through the fixed steel plates 6. By providing the fixed steel plates 6, the waterstop 4 can be relatively conveniently installed on the embedded steel box 5. At the same time, when the waterstop 4 reaches its designed service life or is damaged during daily operation and maintenance, the fixed steel plates 6 can be removed to easily replace the waterstop 4, which is convenient for maintenance.

[0053] In one or more embodiments of the utility model, the fixed steel plate 6 is formed by a plurality of pieces stacked on each other, and a wire screw 601 is welded at the centroid position of each fixed steel plate 6 by means of perforation plug welding, and the fixed steel plate 6 is installed on the embedded steel box 5 on both sides of the deformation joint 21 by means of the wire screw 601 and the fixing nut 602 matched with the wire screw 601, such as Fig.11 As shown. The wire screw 601 can be used to fasten multiple fixed steel plates 6 to the embedded steel box 5, and then the water stop strip 4 can be installed on the embedded steel box 5 on both sides of the deformation joint 21. The installation is firm and easy to disassemble. In practice, each fixed steel plate 6 is 15 cm long, 10 cm high and 1 cm thick. A wire screw 601 is welded at the centroid position of each fixed steel plate 6 by perforation plug welding. The screw diameter is 1.4 cm and the screw length is 5 cm. The fixed steel plate 6 is tongue-shaped at the end in the length direction, with a tongue width of 2 cm and a thickness of 0.5 cm.

[0054] Optionally, in one or more embodiments of the utility model, the end of the fixed steel plate 6 in the length direction is in a tongue-and-groove shape, and the width of the tongue-and-groove is 2cm-3cm, and the thickness is half of the thickness of the fixed steel plate 6, and multiple fixed steel plates 6 are overlapped and sealed together through the tongue-and-groove. By setting the end of the fixed steel plate 6 in the length direction to be in a tongue-and-groove shape, multiple fixed steel plates 6 can be overlapped and pressed together, and a very good sealing effect can be formed to prevent water seepage.

[0055] In one or more embodiments of the utility model, the width of the expansion joint 2 is 3 cm-5 cm, and the expansion joint 2 is filled with asphalt fir board or closed-cell polyethylene foam board. By filling the asphalt fir board or closed-cell polyethylene foam board, on the one hand, its waterproof effect can be utilized to ensure that the expansion joint of the bridge is not soaked and corroded by rainwater, and on the other hand, vibration and noise can be reduced.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A detachable and easily repairable deformation joint structure, applied to the deformation joint (2) between concrete (1) on both sides, characterized in that : It comprises a water stop strip (4), embedded steel boxes (5) are arranged in the concrete (1) on both sides of the deformation joint (2), the upper surface of the embedded steel box (5) is arranged at the same height as the surface of the concrete (1), and fixed steel bars (3) for fixing the embedded steel box (5) are arranged in the concrete (1), and the fixed steel bars (3) are connected and fixed to the embedded steel box (5), the water stop strip (4) is arranged in the deformation joint (2), and its two ends are respectively fixed to the corresponding embedded steel boxes (5).

2. The detachable and easily repairable expansion joint structure according to claim 1 is characterized in that The waterstop (4) is a rubber waterstop, and the rubber waterstop is provided with a plurality of circular holes at intervals along its longitudinal direction.

3. The detachable and easily repairable deformation joint structure according to claim 1 is characterized in that The waterstop (4) is a copper sheet waterstop, and rubber pads (401) are melt-welded at both ends of the copper sheet waterstop, and the copper sheet waterstop and the rubber pad (401) are provided with a plurality of circular holes spaced longitudinally along the copper sheet waterstop.

4. The detachable and easily repairable expansion joint structure according to claim 1 is characterized in that The embedded steel box (5) comprises a steel cover plate (501), mounting bolts (502), a first side steel plate (503), a bottom steel plate (504) and a second side steel plate (505); the first side steel plate (503) and the second side steel plate (505) are respectively connected to the bottom steel plate (504); the steel cover plate (501) is respectively connected to the first side steel plate (503) and the second side steel plate (505) by the mounting bolts (502); and the internal space formed by the steel cover plate (501), the first side steel plate (503), the bottom steel plate (504) and the second side steel plate (505) is filled with an internal filler (506).

5. The detachable and easily repairable expansion joint structure according to claim 4 is characterized in that : The lengths of the steel cover plate (501), the first side steel plate (503), the bottom steel plate (504) and the second side steel plate (505) are respectively equal to the lengths of the deformation joint (2), and the width of the bottom steel plate (504) is equal to the width of the steel cover plate (501).

6. The detachable and easily repairable expansion joint structure according to claim 4 is characterized in that The steel cover plate (501), the first side steel plate (503), the bottom steel plate (504) and the second side steel plate (505) are all made of stainless steel, and the internal filler (506) is asphalt hemp.

7. The detachable and easily repairable expansion joint structure according to claim 1 is characterized in that : It also includes a fixed steel plate (6), and the two ends of the water stop belt (4) are respectively installed on the embedded steel box (5) through the fixed steel plate (6).

8. The detachable and easily repairable expansion joint structure according to claim 7 is characterized in that The fixed steel plate (6) is formed by a plurality of pieces stacked on top of each other, and a threaded screw (601) is welded at the centroid position of each fixed steel plate (6) by means of plug welding. The fixed steel plate (6) is installed with the threaded screw (601) and a fixing nut (602) matching the threaded screw (601) to install the water stop strip (4) on the embedded steel box (5) on both sides of the deformation joint (2).

9. The detachable and easily repairable deformation joint structure according to claim 8 is characterized in that The fixed steel plate (6) is tongue-shaped at the end in the length direction, and the width of the tongue is 2cm-3cm, and the thickness is half of the thickness of the fixed steel plate (6). Multiple fixed steel plates (6) are overlapped and sealed together through the tongue.

10. The detachable and easily repairable deformation joint structure according to any one of claims 1 to 9, characterized in that The width of the deformation joint (2) is 3 cm to 5 cm, and the deformation joint (2) is filled with asphalt fir board or closed-cell polyethylene foam board.

Images