Spring support applied to bridge support, assembly type bridge connecting structure and construction method of assembly type bridge connecting structure

Abstract

The invention discloses a spring support applied to bridge supporting, an assembly type bridge connecting structure and a construction method of the assembly type bridge connecting structure. The spring support comprises a base, a guide column, a lower cylinder sleeve, a disc spring, a cover plate, a pre-tightening bolt, a connecting bolt, an upper cylinder sleeve, a ball seat, a sliding plate and a top seat. The deflection of the prefabricated bridge can be reduced, and the structural safety of a bridge building is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of bridge engineering, and in particular to a spring bearing and an assembled bridge connection structure used for bridge support and a construction method thereof. Background Art

[0002] When heavy loads such as vehicles pass through the bridge, the mid-span part of the bridge is prone to creep deflection under the heavy load, which can easily lead to the problem of bridge fracture after long-term use, affecting the structural safety of the bridge building. Prestressed components are usually used in this field to reinforce the mid-span part of the bridge. The disadvantage is that the construction is complicated and the deflection of the mid-span part of the bridge is small, and there is still the problem of increased deflection or even fracture. Summary of the invention

[0003] The purpose of the present invention is to provide a spring bearing and an assembled bridge connection structure used for bridge support and a construction method thereof, so as to solve the problem that the structural safety of the bridge building is affected when the deflection changes in the mid-span of the bridge.

[0004] In order to solve the above technical problems, the present invention provides a spring support for bridge support, comprising a base, a guide column arranged on the axis of the base, a lower cylinder sleeve arranged on the base coaxially with the guide column, the lower cylinder sleeve is located on the outer side of the guide column, a disc spring sleeved on the guide column, a cover plate slidably arranged on the guide column and contact-connected to the upper end of the disc spring, pre-tightening bolts radially distributed between the base and the cover plate between the disc spring and the lower cylinder sleeve, an upper cylinder sleeve connected to the cover plate by connecting bolts, the upper cylinder sleeve slidably sleeved on the lower cylinder sleeve, the upper end of the lower cylinder sleeve is provided with an outer flange, the lower end of the upper cylinder sleeve is provided with an inner flange, a ball seat is movably connected to the axis of the cover plate, the upper end surface of the ball seat is provided with a slide plate, and the slide plate is contact-connected with a top seat.

[0005] Furthermore, in the spring support for bridge support provided by the present invention, a pressure ring sensor is mounted on the base, and the pressure ring sensor is located at the lower end of the disc spring.

[0006] Furthermore, in the spring support for bridge support provided by the present invention, a rib plate is provided on the lower cylinder sleeve.

[0007] In order to solve the above technical problems, the present invention also provides an assembled bridge connection structure, including bridge piers, a cap beam and a prefabricated bridge, wherein a plurality of the above-mentioned spring supports for bridge support are supported and arranged between the cap beam and the prefabricated bridge.

[0008] Furthermore, in the assembled bridge connection structure provided by the present invention, the spring supports are evenly distributed on the cap beam with the bridge pier as the center.

[0009] Furthermore, in the assembled bridge connection structure provided by the present invention, four of the spring supports are evenly arranged on the cap beam on each pier node.

[0010] Furthermore, in the prefabricated bridge connection structure provided by the present invention, the spring bearing support is supported on the prefabricated bridge by a wedge-shaped steel plate arranged at the bottom of the prefabricated bridge.

[0011] In order to solve the above technical problems, the present invention also provides a construction method of the above-mentioned assembled bridge connection structure, comprising:

[0012] Construct bridge piers and cap beams, and hoist prefabricated bridges above the cap beams;

[0013] The disc spring is pressed down by the cover plate, and the pre-tightening bolt is passed through and exposed above the cover plate. The pre-tightening nut is connected to the pre-tightening bolt and pressed against the cover plate, and the disc spring is compressed between the cover plate and the base to preliminarily pre-tighten the spring support and reduce the height of the spring support;

[0014] Install the preliminarily pre-tightened spring support on the cap beam below the prefabricated bridge;

[0015] Place the jack on the cap beam and in the mounting cavity of the top support member of the spring support;

[0016] The spring support is re-preloaded by compressing the disc spring by lifting the jack, the preload nut on the preload bolt is removed, and the jack is depressurized. The spring support is tightened between the cap beam and the prefabricated bridge under the elastic force of the disc spring;

[0017] Remove the jack.

[0018] Furthermore, in the construction method of the prefabricated bridge connection structure provided by the present invention, a temporary pad is arranged between the jack and the cap beam before the jack is lifted; when the jack is removed, the temporary pad is removed together.

[0019] Furthermore, in the construction method of the prefabricated bridge connection structure provided by the present invention, a cushion block is arranged between the lower end of the spring support and the cap beam when the jack is lifted; and the cushion block is removed together with the jack when the jack is removed.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The spring support and prefabricated bridge connection structure and construction method thereof provided by the present invention are used for bridge support. By supporting the spring support between the cap beam and the prefabricated bridge, the deflection of the prefabricated bridge generated at the mid-span part is supported by the spring support for reaction force after the prefabricated bridge is loaded by the passage of vehicles, and the load is unloaded by the elastic force of the spring support, thereby reducing the deflection of the prefabricated bridge, thereby ensuring the structural safety of the bridge building and avoiding the problem of fracture of the mid-span part of the prefabricated bridge due to changes in creep deflection.

[0022] The spring bearing and assembled bridge connection structure and construction method thereof for bridge support provided by the present invention can restore the reaction force support effect of the prefabricated bridge by replacing the spring bearing when maintaining the supporting point of the bridge, and has the advantages of convenient maintenance and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the main structure of the assembled bridge connection structure;

[0024] Figure 2 It is a side view structural diagram of the prefabricated bridge connection structure;

[0025] Figure 3 It is a schematic diagram of a top view of the structure in which a spring support is arranged on a cap beam;

[0026] Figure 4 It is a schematic diagram of the elevation structure of the wedge-shaped steel plate;

[0027] Figure 5 It is a schematic diagram of the cross-sectional structure of the main structure of the spring support;

[0028] Figure 6 1. It is a schematic diagram of the top view of the main structure of the spring support;

[0029] Figures 7 to 9 It is a process diagram of the construction method of the prefabricated bridge connection structure;

[0030] Fig.10 It is a schematic diagram of the elevation structure of the spring support elevation and the jack arrangement relationship;

[0031] Fig.11 It is a planar structural diagram of the spring support elevation and the jack arrangement relationship;

[0032] Fig.12 1 is a schematic diagram of the side structure of the top support member;

[0033] As shown in the figure:

[0034] 1. Base, 2. Guide column, 3. Lower cylinder sleeve, 4. Disc spring, 5. Cover plate, 6. Pre-tightening bolts, 7. Connecting bolts, 8. Upper cylinder sleeve, 9. Ball seat, 10. Slide plate, 11. Top seat, 12. Pressure ring sensor, 13. Rib plate, 14. Top support, 15. Vertical plate, 16. Crossbeam, 17. Installation cavity;

[0035] 100. Prefabricated bridge connection structure, 110. Bridge pier, 120. Cap beam, 130. Spring support, 140. Prefabricated bridge, 150. Wedge-shaped steel plate;

[0036] 201. Temporary pad, 202. Jack, 203. Pad. DETAILED DESCRIPTION

[0037] The present invention is described in detail below in conjunction with the accompanying drawings: The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0038] Embodiment 1

[0039] Please refer to Figure 5 , Figure 6 and Fig.10 , Embodiment 1 of the present invention provides a spring support 130 for bridge support, comprising a base 1, a guide column 2 arranged on the axis of the base 1, and a lower cylinder sleeve 3 arranged on the base 1 coaxially with the guide column 2, wherein the base 1 can be in a stepped shape with a high center and a low periphery, so as to facilitate the connection between the base 1 and the guide column 2 and the lower cylinder sleeve 3 respectively, the guide column 2 and the base 1 include but are not limited to threaded connection or an integral structure, the lower cylinder sleeve 3 and the base 1 include but are not limited to threaded connection or an integral structure, wherein the guide column 2 can be a solid cylinder, and can also be a hollow cylinder in order to reduce costs and handling, the lower cylinder sleeve 3 is located on the outer side of the guide column 2, a disc spring 4 sleeved on the guide column 2, a cover plate 5 slidably arranged on the guide column 2 and contact-connected to the upper end of the disc spring 4, and pre-tightening bolts 6 located between the disc spring 4 and the lower cylinder sleeve 3 and radially surrounding and distributed between the base 1 and the cover plate 5, Figure 5 Only the final form of the pre-tightening bolt 6 is illustrated, and the pre-tightening state of the base 1 and the cover plate 5 through the pre-tightening nut (not shown) on the pre-tightening bolt 6 is not illustrated. The corresponding cover plate 5 is provided with a through hole for the pre-tightening bolt 6 to pass through. The through hole is only Figure 5 In the example, Figure 6There is no example in the figure. The upper cylinder sleeve 8 is connected to the cover plate 5 by connecting bolts 7. The upper cylinder sleeve 8 is slidably sleeved on the lower cylinder sleeve 3. The upper end of the lower cylinder sleeve 3 is provided with an outer flange 31, and the lower end of the upper cylinder sleeve 8 is provided with an inner flange 81. The inner flange 81 and the outer flange 31 can limit the upper and lower cylinder sleeves to prevent them from being separated by the spring force of the disc spring 4. The cover plate 5 is movably connected with a ball seat 9 on the axis, wherein the movably connected can be a contact connection or a ball joint connection. The ball seat 9 can move in all directions relative to the cover plate 5 after being loaded. The upper end surface of the ball seat 9 is provided with a slide plate 10, and the slide plate 10 is contact-connected with a top seat 11. The slide plate 10 can make the ball seat 9 and the top seat 11 slide smoothly in the horizontal direction.

[0040] Please refer to Figure 5 In order to monitor the service life of the disc spring 4 and the pressure load borne by the spring support 130, the spring support 130 applied to the bridge support provided in the first embodiment of the present invention has a pressure ring sensor 12 mounted on the base 1, and the pressure ring sensor 12 is located at the lower end of the disc spring 4. The pressure ring sensor 12 detects the pressure value of the disc spring 4 after being compressed.

[0041] Please refer to Figure 8 In order to ensure the stability of the spring support 130 when placed on a plane, the spring support 130 applied to the bridge support provided in the first embodiment of the present invention has a rib plate 13 arranged on the lower cylinder sleeve 3, wherein the rib plates 13 may be 4 in number, and the lower ends thereof are flush with the lower end surface of the base 1. When the spring support 130 is placed on a plane, the base 1 and the rib plates 13 are jointly supported on the plane, which can improve the stability of the spring support 130 when placed on the plane.

[0042] Embodiment 2

[0043] Please refer to Figures 1 to 6 , Embodiment 2 of the present invention provides an assembled bridge connection structure 100, including a pier 110, a cap beam 120 and a prefabricated bridge 140, wherein a plurality of spring supports 130 for bridge support are supported and arranged between the cap beam 120 and the prefabricated bridge 140. The cap beam 120 may be a steel structure cap beam or a prefabricated cap beam. In order to ensure the stability of the support for the prefabricated bridge 140, the spring supports 130 are evenly distributed on the cap beam 120 with the pier 110 as the center. The number of spring supports 130 includes but is not limited to four, for example: four spring supports 130 are evenly arranged on the cap beam 120 at each node of the pier 110.

[0044] Please refer to Figure 1 and Figure 4In order to fit the bottom surface of the prefabricated bridge 140, the prefabricated bridge connection structure 100 provided in the second embodiment of the present invention has the spring support 130 supported on the prefabricated bridge 140 through a wedge-shaped steel plate 150 disposed at the bottom of the prefabricated bridge 140. The wedge-shaped steel plate 150 can be anchored on the prefabricated bridge 140.

[0045] Embodiment 3

[0046] Please refer to Figures 1 to 12 Embodiment 3 of the present invention provides a construction method of the above-mentioned assembled bridge connection structure 100, comprising:

[0047] Step S301, construct the bridge pier 110 and the cap beam 120, and hoist the prefabricated bridge 140 above the cap beam 120. Figure 7 shown.

[0048] Step S302, press down the disc spring 4 through the cover plate 5, pass the pre-tightening bolt 6 through and expose it above the cover plate 5, connect the pre-tightening nut (as shown in the figure) to the pre-tightening bolt 6 and press it against the cover plate 5, compress the disc spring 4 between the cover plate 5 and the base 1, so as to preliminarily pre-tighten the spring support 130 and reduce the height of the spring support 130.

[0049] Step S303, installing the pre-tightened spring support 130 on the cap beam 120 below the mid-span portion of the prefabricated bridge 140, such as Figures 1 to 3 and Figure 7 Before the spring support 130 is installed, the wedge-shaped steel plate 150 is anchored at the bottom of the mid-span component of the prefabricated bridge 140 , and the top seat 11 of the spring support 130 can be connected to the wedge-shaped steel plate 150 .

[0050] Step S304, placing the jack 202 on the cap beam 120 and in the installation cavity 17 of the top support member 14 of the spring support 130, wherein each top support member 14 is composed of two vertical plates 15 and a cross beam 16 such as an I-beam arranged between them near the lower end of the base 1, and the space enclosed by the vertical plates 15 and the cross beam 16 is the installation cavity 17. When the jack 202 is lifted, it rests on the cross beam 16 of the installation cavity 17, and the installation cavity 17 facilitates the installation and removal of the jack 202. Figure 7 , Figures 10 to 12 shown.

[0051] Step S305, the spring support 130 is re-pretightened by lifting the jack 202 and compressing the disc spring 4. At this time, the lower end of the spring support 130 leaves the cap beam 120, the pretightening nut on the pretightening bolt 6 is removed, and the jack 202 is depressurized. The spring support 130 is tightened between the cap beam 120 and the prefabricated bridge 140 under the elastic force of the disc spring 4. At this time, the lower end of the spring support 130 is restored and placed on the cap beam 120. Figures 7 to 9 shown.

[0052] Step S306 , remove the jack 202 , and the spring support is pressed tightly between the cap beam 120 and the prefabricated bridge 140 .

[0053] Please refer to Figure 7 In order to avoid damage to the cap beam 120, the construction method of the prefabricated bridge connection structure 100 provided in the third embodiment of the present invention is that before the jack 202 is lifted, a temporary pad 201 such as a steel plate is arranged between the jack 202 and the cap beam 120; when the jack 202 is removed, the temporary pad 201 is removed together.

[0054] Please refer to Figure 8 In order to maintain a stable lifting when the spring support 130 leaves the cap beam 120, the construction method of the prefabricated bridge connection structure 100 provided in the third embodiment of the present invention is as follows: when the jack 202 is lifted, a cushion block 203 is arranged between the lower end of the spring support 130 and the cap beam 120; the cushion block 203 is used to keep the spring support 130 stable during the lifting process to avoid the problem of tipping; when the jack 202 is removed, the cushion block 203 is removed together.

[0055] The spring support 130 and the prefabricated bridge connection structure 100 and the construction method thereof provided in the above embodiment of the present invention support the spring support 130 between the cap beam 120 and the prefabricated bridge 140. After the prefabricated bridge 140 is subjected to load by the passage of vehicles, the deflection generated in the mid-span of the prefabricated bridge 140 is supported by the spring support 130, and the load is unloaded by the elastic force of the spring support 130, reducing the deflection of the prefabricated bridge 140, thereby ensuring the structural safety of the bridge building and avoiding the problem of fracture of the mid-span of the prefabricated bridge 140 due to the change of creep deflection. When the prefabricated bridge 140 is subjected to loads at different positions, the deflection change generated by the prefabricated bridge 140 is fed back to the ball seat 9 through the wedge steel plate 150, the top seat 11, and the slide plate 10. The ball seat 9 rotates on the cap plate 5 according to the adaptability of the deflection change to maintain the vertical support of the prefabricated bridge 140, thereby ensuring the structural safety of the bridge building. In order to limit the top seat 11 from sliding out of the slide plate 10 in the horizontal direction, a limiting member may be provided on the cover plate 5 at the periphery of the top seat 11 .

[0056] The spring support 130 and the prefabricated bridge connection structure 100 for bridge support and the construction method thereof provided in the above-mentioned embodiment of the present invention can restore the reaction force support effect on the prefabricated bridge 140 by replacing the spring support 130 when maintaining the supporting point of the bridge, and has the advantages of convenient maintenance and high efficiency.

[0057] The spring support 130 and the prefabricated bridge connection structure 100 for bridge support and the construction method thereof provided in the above-mentioned embodiment of the present invention can provide corresponding vertical force in the prefabricated bridge 140 according to actual needs, thereby reducing the mid-span deflection of the prefabricated bridge 140, and ensuring that under the deformation caused by the load, the vertical force of the spring support 130 does not change by more than 10%, thereby avoiding excessive vertical force caused by excessive deformation, which affects the structural safety of the bridge building.

[0058] The present invention is not limited to the above-mentioned specific implementation modes. Obviously, the above-mentioned embodiments are only some embodiments of the embodiments of the present invention, but not all embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention. Those skilled in the art can make other levels of modifications and changes to the present invention. In this way, if these modifications and changes of the present invention fall within the scope of the claims of the present invention, the present invention is also intended to include these changes and changes.

Claims

1. A spring support for bridge support, characterized in that: It includes a base, a guide column arranged on the axis of the base, a lower cylinder sleeve arranged on the base coaxially with the guide column, the lower cylinder sleeve is located on the outer side of the guide column, a disc spring sleeved on the guide column, a cover plate slidably arranged on the guide column and contact-connected to the upper end of the disc spring, pre-tightening bolts radially distributed between the base and the cover plate between the disc spring and the lower cylinder sleeve, an upper cylinder sleeve connected to the cover plate by connecting bolts, the upper cylinder sleeve slidably sleeved on the lower cylinder sleeve, an outer flange is arranged at the upper end of the lower cylinder sleeve, an inner flange is arranged at the lower end of the upper cylinder sleeve, a ball seat is movably connected to the axis of the cover plate, a slide plate is arranged on the upper end surface of the ball seat, and a top seat is contact-connected on the slide plate.

2. The spring support for bridge support according to claim 1, characterized in that: A pressure ring sensor is sleeved and installed on the base, and the pressure ring sensor is located at the lower end of the disc spring.

3. The spring support for bridge support according to claim 1, characterized in that: The lower cylinder sleeve is provided with a rib plate.

4. An assembled bridge connection structure, characterized in that: It comprises a bridge pier, a cap beam and a prefabricated bridge, wherein a plurality of spring supports for bridge support as claimed in any one of claims 1 to 3 are arranged between the cap beam and the prefabricated bridge.

5. The assembled bridge connection structure according to claim 4, characterized in that: The spring supports are evenly distributed on the cap beam with the bridge pier as the center.

6. The assembled bridge connection structure according to claim 5, characterized in that: Four of the spring supports are evenly arranged on the cap beam at each pier node.

7. The assembled bridge connection structure according to claim 4, characterized in that: The spring support is supported on the prefabricated bridge by a wedge-shaped steel plate arranged at the bottom of the prefabricated bridge.

8. A construction method for the assembled bridge connection structure according to claim 4, characterized in that: include: Construct bridge piers and cap beams, and hoist prefabricated bridges above the cap beams; The disc spring is pressed down by the cover plate, and the pre-tightening bolt is passed through and exposed above the cover plate. The pre-tightening nut is connected to the pre-tightening bolt and pressed against the cover plate, and the disc spring is compressed between the cover plate and the base to preliminarily pre-tighten the spring support and reduce the height of the spring support; Install the preliminarily pre-tightened spring support on the cap beam below the prefabricated bridge; Place the jack on the cap beam and in the mounting cavity of the top support member of the spring support; The spring support is re-preloaded by compressing the disc spring by lifting the jack, the preload nut on the preload bolt is removed, and the jack is depressurized. The spring support is tightened between the cap beam and the prefabricated bridge under the elastic force of the disc spring; Remove the jack.

9. The construction method of the assembled bridge connection structure according to claim 8, characterized in that: Before lifting the jack, a temporary pad is set between the jack and the cap beam; when the jack is removed, the temporary pad is removed together.

10. The construction method of the assembled bridge connection structure according to claim 9, characterized in that: When lifting the jack, place a pad between the lower end of the spring support and the cap beam; when removing the jack, remove the pad together.

Images