Novel bridge anti-seismic device and construction method thereof

Abstract

The invention provides a novel bridge anti-seismic device and a construction method thereof, a damping block is arranged in a corresponding earthquake high-incidence area of a bridge, the cross section of the damping block is matched with the cross section of an inner cavity of the bridge in shape, and a plurality of damping pieces are distributed on the periphery of the damping block, so that the damping block is limited on the inner wall of the bridge in the circumferential direction through the damping pieces. The damping device is arranged in the box girder of the bridge, and the damping device is in buffer connection with the bridge, so that the anti-seismic property of the bridge in a seismic zone is effectively improved, and the damage of an earthquake to a bridge structure is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge seismic resistance, and particularly relates to a novel bridge seismic resistance device and a construction method thereof. Background Art

[0002] Earthquakes are a serious natural disaster faced by human society. According to statistics, about 5 million earthquakes occur on the earth every year on average, and about 1,000 destructive earthquakes above magnitude 5 account for about 1,000. In addition to causing casualties, earthquakes also bring huge economic and property losses to mankind. As a lifeline project, long-span bridges generally should not collapse during earthquakes. Therefore, measures must be taken to improve the seismic performance of bridges.

[0003] Therefore, an improved technical solution is needed to address the deficiencies of the above-mentioned prior art. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, and the present invention provides a novel bridge seismic resistance device and a construction method thereof.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] A novel bridge seismic resistance device, comprising:

[0007] A damping block, which is arranged inside the bridge corresponding to the earthquake-prone area, and the cross-section of the damping block is adapted to the cross-section shape of the inner cavity of the bridge.

[0008] Damping members, a plurality of the damping members are distributed on the outer periphery of the damping block to circumferentially limit the damping block to the inner wall of the bridge through the plurality of damping members.

[0009] Preferably, there are a plurality of the damping blocks, and the plurality of damping blocks are spaced apart in the bridge longitudinal direction. Two adjacent damping blocks in the bridge longitudinal direction are fixed by damping members;

[0010] The damper is a spring or a damping rod, and connection stations corresponding to the damping members are provided on both the inner wall of the bridge and the outer wall of the damping block.

[0011] Preferably, the damping block includes a housing and a concrete filling block. A plurality of steel bars are provided inside the housing, and concrete is filled inside the housing to form the concrete filling block.

[0012] Preferably, the lower wall of the damping block is provided with mounting holes corresponding to the damping members, and the mounting holes are equidistantly distributed along the edge of the lower wall of the damping block;

[0013] After the damping member extends out of the lower wall of the damping block, it is slidably assembled at the bottom of the bridge inner cavity through a sliding mechanism. The sliding mechanism includes a screw sleeve, a support column, and a ball. The screw sleeve is correspondingly connected to the damping member and is longitudinally slidably assembled in the mounting hole. The support column is threadedly assembled at the lower end of the screw sleeve, and a groove for the corresponding ball is provided at the lower end of the support column.

[0014] Preferably, a sleeve is welded to the bottom of the outer shell to form a mounting hole. At least one longitudinally extending chute is provided on the inner wall of the sleeve. The upper end of the chute extends to the upper end face of the sleeve, and the lower end extends to a certain distance above the lower end face of the sleeve.

[0015] A convex block corresponding to the chute is provided at the upper end of the screw sleeve. A closed end corresponding to the damping member is provided at the bottom of the screw sleeve. The support column passes upward through the closed end and extends into the damping member. A plug corresponding to the damping member is provided on the top plate of the screw sleeve.

[0016] A supporting plate corresponding to the ball is provided at the bottom of the bridge inner cavity.

[0017] A construction method of a new type of bridge seismic device includes the following steps:

[0018] Step S1: Detect the geological layer in the area where the bridge passes through to obtain the earthquake-prone areas.

[0019] Step S2: Carry out in-situ casting construction of the bridge. After the bridge is constructed to the earthquake-prone area, the bridge reaches the preset strength through maintenance.

[0020] Step S3: Install damping blocks inside the bridge and connect the damping blocks to the inner wall of the bridge through damping members.

[0021] Step S4: Repeat steps S2 - S3 until the bridge construction corresponding to the earthquake-prone area is completed.

[0022] Preferably, in step S2, connecting pieces are embedded in the inner wall of the bridge during the pouring process of the bridge to serve as the connection stations for the damping members.

[0023] In step S4, two adjacent damping blocks in the bridge direction are connected through damping members as the pouring progresses.

[0024] Preferably, the damping block includes an outer shell and a concrete filling block. A mounting hole corresponding to the damping member is provided on the lower wall of the damping block. After the damping member extends out of the lower wall of the damping block, it is slidably assembled at the bottom of the bridge inner cavity through a sliding mechanism.

[0025] During the bridge construction process, a pallet is laid on the bottom of the bridge inner cavity as a formwork, and multiple anchor bolts integrated with the bridge casting are fixed on the lower surface of the pallet. After the bridge concrete reaches the preset strength, the outer shell of the preset damping device in the bottom installation hole is hoisted into the bridge interior by a hoisting device;

[0026] After the outer shell is in place, the outer shell and the bridge are connected through the damping device, and a pouring pipe is inserted into the pouring port outside the outer shell for concrete pouring inside;

[0027] After the concrete inside the outer shell solidifies, the construction of the next bridge section is carried out.

[0028] Preferably, before the outer shell enters the bridge inner cavity, the extended length of the threaded adjustment support column is adjusted so that the height of the outer shell is adapted to the bridge inner cavity;

[0029] After the outer shell enters the bridge inner cavity and is in place, the extended length of the threaded adjustment support column is adjusted so that the outer shell reaches the specified elevation for damping device connection, and after the damping device connection is fixed, concrete pouring is carried out;

[0030] After the concrete pouring is completed, the threaded adjustment support column is adjusted to the preset position to make the damping block stress balanced.

[0031] Beneficial effects: By setting a damping device inside the box girder of the bridge and making a buffer connection between the damping device and the bridge, the seismic performance of the bridge in the earthquake zone is effectively improved, and the damage to the bridge structure caused by earthquakes is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The specification drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. Among them:

[0033] Figure 1 It is a schematic diagram of the distribution of damping blocks in the specific embodiment provided by the present invention;

[0034] Figure 2 It is an assembly diagram of damping blocks in the specific embodiment provided by the present invention;

[0035] Figure 3 It is a simplified assembly diagram of the sliding mechanism in the specific embodiment provided by the present invention.

[0036] In the figure: 1. Bridge; 2. Damping block; 3. Damping device; 4. Pallet; 5. Sleeve; 6. Nut; 7. Support column; 8. Ball; 9. Plug; 201. Outer shell; 202. Steel bar. DETAILED DESCRIPTION OF THE INVENTION

[0037] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0038] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0039] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0040] like Figures 1-3 As shown, a novel bridge seismic device includes a damping block 2 and a damping member 3, wherein the cross-sectional shape of the damping block 2 is adapted to the cross-sectional shape of the inner cavity of the bridge 1. Generally speaking, the side length of the damping block 2 is 0.2-0.5 times the side length of the inner cavity of the bridge 1. The damping block 2 is arranged inside the bridge 1 corresponding to the earthquake-prone area. A plurality of damping members 3 are distributed on the periphery of the damping block 2 and are correspondingly connected between the damping block 2 and the inner cavity of the bridge 1, so that the damping block 2 is circumferentially confined to the inner wall of the bridge 1 by the plurality of damping members 3, and seismic resistance is achieved by the buffering of the damping members 3.

[0041] In this embodiment, according to the length of the bridge 1 passing through the earthquake zone, multiple damping blocks 2 are spaced apart along the direction of the bridge 1, and two adjacent damping blocks 2 along the direction of the bridge 1 are fixed by damping members 3, so that the internal damping device of the bridge 1 is connected as a whole, and the damper is a spring or a damping rod. In this application, the damper is preferably a spring, and connection stations corresponding to the damping members 3 are provided on the inner wall of the bridge 1 and the outer wall of the damping block 2. The connection station can be a hinge seat. During the casting process of the bridge 1, connecting bolts are pre-embedded in the inner wall of the bridge 1, and then the hinge seat is threadedly assembled for connecting the damping members 3. Hinged plates corresponding to the hinge seats are fixed at both ends of the damping members 3 by welding.

[0042] In an alternative embodiment, in order to reduce the hoisting difficulty of production cost, the damping block 2 includes a housing 201 and a concrete filling block. The housing 201 is welded by steel plates. A plurality of steel bars 202 are arranged inside the housing 201 to strengthen the strength of the housing 201 as tie bars. Then, the housing 201 is filled with concrete to form a concrete filling block, thereby reducing the hoisting difficulty.

[0043] In this embodiment, on both sides and above the damping block 2, a plurality of damping members 3 are evenly distributed. The lower wall of the damping block 2 is provided with mounting holes corresponding to the damping members 3, and the mounting holes are equidistantly distributed along the edge of the lower wall of the damping block 2, so as to ensure that construction workers can adjust the lower damping members 3. Specifically, since the damping members 3 need to have high strength and ensure the buffering purpose, after the damping members 3 extend downward from the lower wall of the damping block 2, they are slidably assembled at the bottom of the inner cavity of the bridge 1 through a sliding mechanism, so as to stably support the damping block 2. Since the weight of the housing 201 is small before pouring, and the damping members 3 generally have large elasticity, in order to prevent the damping members 3 from supporting upward and making the height of the housing 201 too high, making it difficult to hoist into the inner cavity of the bridge 1, the present application sets the sliding mechanism to include a screw sleeve 6, a support column 7 and a ball 8. Among them, the lower end of the screw sleeve 6 is correspondingly sleeved on the damping member 3, and the upper end is slidably assembled longitudinally in the mounting hole. The support column 7 is threadedly assembled at the lower end of the screw sleeve 6. The lower end of the support column 7 is provided with a groove corresponding to the ball 8, thereby forming a complete sliding structure to ensure free sliding during an earthquake.

[0044] Furthermore, in the present application, a sleeve 5 is welded to the bottom of the housing 201 to form a mounting hole. The sleeve 5 is a metal pipe and is connected to the steel bar 202 inside the housing 201. At least one longitudinal chute is provided on the inner wall of the sleeve 5. The upper end of the chute extends to the upper end face of the sleeve 5, and the lower end extends to a certain distance above the lower end face of the sleeve 5. A convex block corresponding to the chute is provided at the upper end of the screw sleeve 6 to longitudinally limit the screw sleeve 6 and prevent the screw sleeve 6 from exiting the mounting hole under the extrusion of the damping member 3. A closed end corresponding to the damping member 3 is provided at the bottom of the screw sleeve 6 to block the lower end of the damping member 3. The support column 7 passes upward through the closed end and extends into the damping member 3. A plug 9 corresponding to the damping member 3 is provided on the top plate of the screw sleeve 6, and the plug 9 is threadedly assembled inside the screw sleeve 6, so as to facilitate the installation of the damping member 3 and use the plug 9 to block the upper end of the damping member 3, thereby limiting the position of the damping member 3. In this embodiment, the sliding member is a steel ball, and a support plate 4 corresponding to the ball 8 is provided at the bottom of the inner cavity of the bridge 1.

[0045] In this way, the extended length can be limited by rotating the support column 7, thereby reducing the hoisting difficulty. After the damping block 2 is poured, the support column 7 is fully extended to ensure longitudinal force balance.

[0046] In an alternative embodiment, the present application also provides a construction method for a seismic device of a new type of bridge 1, comprising the following steps:

[0047] Step S1, detecting the geological layer in the area passed by the bridge 1 to obtain the earthquake-prone areas, and setting the distribution of the damping blocks 2 according to the detection results.

[0048] Step S2, performing in-situ casting construction of the bridge 1 in the conventional construction direction. When the bridge 1 is constructed to the earthquake-prone area, the bridge 1 reaches the preset strength through curing, and preparatory work for installing the damping device is carried out.

[0049] Step S3, selecting a suitable lifting device according to the actual environment, installing the damping blocks 2 inside the bridge 1 by lifting, and then connecting the damping blocks 2 to the inner wall of the bridge 1 through the damping members 3. After completion, the casting of the next section of the bridge 1 is carried out.

[0050] Step S4, repeating steps S2 - S3 until the construction of the bridge 1 corresponding to the earthquake-prone area is completed, and then the casting of the bridge 1 can be carried out normally.

[0051] In an alternative embodiment, in step S2, during the casting of the bridge 1, connecting members are embedded in its inner wall as the connection stations for the damping members 3. The connecting members can be embedded bolts, and a steel plate is provided at the bottom of the inner cavity of the bridge 1 as a supporting plate 4, which is used to support the damping blocks 2 after the casting is completed. In step S4, as the casting progresses, two adjacent damping blocks 2 in the upward direction of the bridge 1 are connected through the damping members 3, so that a plurality of damping blocks 2 are connected into a whole.

[0052] In an alternative embodiment, in order to reduce the hoisting difficulty of production costs, the damping block 2 comprises a housing 201 and a concrete filling block. The housing 201 is welded by steel plates. A plurality of steel bars 202 are arranged inside the housing 201 to strengthen the strength of the housing 201 as tension bars. An installation hole corresponding to the damping member 3 is provided on the lower wall of the damping block 2. The installation hole is a welded metal sleeve 5. After the damping member 3 extends out of the lower wall of the damping block 2, it is slidably assembled at the bottom of the inner cavity of the bridge 1 through a sliding mechanism. The sliding mechanism comprises a screw sleeve 6, a support column 7 and a ball 8. The screw sleeve 6 is correspondingly connected to the damping member 3 and is slidably assembled longitudinally in the installation hole. The support column 7 is threadedly assembled at the lower end of the screw sleeve 6. A groove for the corresponding ball 8 is provided at the lower end of the support column 7 to meet the sliding requirements.

[0053] During the construction of the bridge 1, a support plate 4 is laid at the bottom of the inner cavity of the bridge 1 as a formwork and does not need to be removed after the casting is completed. To maintain stability, a plurality of anchor bolts integrated with the casting of the bridge 1 are fixed on the lower surface of the support plate 4, so that the bridge 1 and the support plate 4 are cast into one body. After the concrete of the bridge 1 reaches the preset strength, the housing 201 of the preset damping member 3 in the bottom installation hole is hoisted into the bridge 1 through a hoisting device.

[0054] After the outer shell 201 is in place, it is connected to the bridge 1 through the damping member 3. The outer shell 201 is provided with a pouring port, and then the pouring pipe can be inserted into the pouring port outside the outer shell 201 to carry out concrete pouring inside.

[0055] After the concrete inside the outer shell 201 solidifies, the construction of the next section of the bridge 1 is carried out, and this cycle is repeated until the installation of the damping block 2 in the seismic area is completed.

[0056] In this embodiment, aiming at the elasticity problem of the damping member 3, before the outer shell 201 enters the inner cavity of the bridge 1, the extended length of the threaded adjustment support column 7 is adjusted to the minimum so that the height of the outer shell 201 is adapted to the inner cavity of the bridge 1, which is convenient for lifting the outer shell 201 into the inner cavity of the bridge 1.

[0057] After the outer shell 201 enters the inner cavity of the bridge 1 and is in place, the extended length of the threaded adjustment support column 7 is adjusted. At this time, the outer shell 201 is adjusted to be in place longitudinally. After the outer shell 201 reaches the specified elevation, the damping member 3 is connected. After the damping member 3 is connected and fixed, concrete pouring is carried out.

[0058] After the concrete pouring is completed (or during the concrete pouring process), the threaded adjustment support column 7 is adjusted to the preset position. At this time, the support column 7 is at the maximum length. After overcoming the gravity of the damping block 2, the damping block 2 is in a balanced force state and at the preset elevation.

[0059] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A new type of bridge seismic device, characterized in that: include: A damping block is arranged inside the bridge corresponding to the earthquake-prone area, and the cross section of the damping block is adapted to the cross section shape of the inner cavity of the bridge. A plurality of damping members are distributed on the outer circumference of the damping block, so that the damping block is circumferentially limited to the inner wall of the bridge by the plurality of damping members.

2. The novel bridge seismic device according to claim 1 is characterized in that: There are a plurality of damping blocks, which are spaced apart along the direction of the bridge, and two adjacent damping blocks along the direction of the bridge are fixed by a damping member; The damper is a spring or a damping rod, and connection stations corresponding to the damping element are provided on the inner wall of the bridge and the outer wall of the damping block.

3. The novel bridge seismic device according to claim 1 is characterized in that: The damping block comprises an outer shell and a concrete filling block. A plurality of steel bars are arranged inside the outer shell, and concrete is filled inside the outer shell to form the concrete filling block.

4. The novel bridge seismic device according to claim 3 is characterized in that: The lower wall of the damping block is provided with mounting holes corresponding to the damping element, and the mounting holes are evenly distributed along the edge of the lower wall of the damping block; After the damping member extends out of the lower wall of the damping block, it is slidably assembled at the bottom of the inner cavity of the bridge through a sliding mechanism. The sliding mechanism includes a screw sleeve, a support column and a ball. The screw sleeve is correspondingly connected to the damping member and is slidably assembled in the mounting hole along the longitudinal direction. The support column is threadedly assembled at the lower end of the screw sleeve, and the lower end of the support column is provided with a corresponding groove for the ball.

5. The novel bridge seismic device according to claim 4 is characterized in that: A sleeve is welded at the bottom of the housing to form a mounting hole, and the inner wall of the sleeve is provided with at least one slide groove extending in the longitudinal direction, the upper end of the slide groove extends to the upper end surface of the sleeve, and the lower end extends to a certain distance above the lower end surface of the sleeve; The upper end of the screw sleeve is provided with a convex block corresponding to the slide groove, the bottom of the screw sleeve is provided with a closed end corresponding to the damping member, the support column passes through the closed end upward and then extends into the damping member, and the top plate of the screw sleeve is provided with a plug corresponding to the damping member; A supporting plate corresponding to the ball bearing is provided at the bottom of the inner cavity of the bridge.

6. A construction method of a new type of bridge seismic device, characterized in that: The following steps are involved: Step S1, detecting the geological layers in the area where the bridge passes, and finding the areas with high earthquake incidence; Step S2, performing cast-in-place construction of the bridge, and after the bridge is constructed to the earthquake-prone area, maintaining the bridge to reach a preset strength; Step S3, installing a damping block inside the bridge, and connecting the damping block to the inner wall of the bridge through a damping member; Step S4, repeating steps S2-S3 until the bridge construction corresponding to the earthquake-prone area is completed.

7. The construction method of the novel bridge seismic resistant device according to claim 6 is characterized in that: In step S2, during the bridge casting process, a connecting member is embedded in the inner wall of the bridge as a connecting station for the damping member; In step S4, as the casting progresses, two adjacent damping blocks along the bridge are connected via damping elements.

8. The construction method of the novel bridge seismic resistant device according to claim 6 is characterized in that: The damping block includes a shell and a concrete filling block. A mounting hole corresponding to the damping element is provided on the lower wall of the damping block. After the damping element extends out of the lower wall of the damping block, it is slidably assembled on the bottom of the inner cavity of the bridge through a sliding mechanism. During the construction of the bridge, a support plate is laid at the bottom of the inner cavity of the bridge as a template, and multiple anchors cast as one with the bridge are fixed on the lower surface of the support plate. After the concrete of the bridge reaches the preset strength, the shell of the preset damping member in the bottom mounting hole is hoisted to the inside of the bridge by hoisting equipment; After the shell is in place, the shell and the bridge are connected through the damping member, and the pouring pipe is inserted into the pouring port outside the shell to pour concrete inside; After the concrete inside the shell solidifies, the next section of the bridge will be constructed.

9. The construction method of the novel bridge seismic resistant device according to claim 8 is characterized in that: Before the shell enters the inner cavity of the bridge, the thread adjusts the extension length of the support column so that the height of the shell is adapted to the inner cavity of the bridge; After the shell enters the inner cavity of the bridge and is in place, the thread adjusts the extension length of the support column so that the shell reaches the specified elevation to connect the damping element. After the damping element is connected and fixed, concrete pouring is carried out; After the concrete pouring is completed, adjust the threaded support column to the preset position to balance the force on the damping block.

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