Hydraulic synchronous jacking support changing structure
By setting up a hydraulic synchronous lifting and replacing structure below the beam slabs of the pier bridge, the beam slabs are decentralized step by step, and the problem of difficulty in demolition when the working space on both sides of the pier bridge is limited, achieving a stable and safe demolition effect.
Patent Information
- Application Number
- CN202421863101.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-02
AI Technical Summary
When the working space on both sides of the pier bridge is limited, the existing demolition method is not applicable, making it difficult to achieve stable and safe demolition.
A hydraulic synchronous elevation and re-support structure is designed, which is arranged under the beam slab of the pier bridge, including the re-support bracket and the support foundation. By changing the first vertical pillar and the second vertical pillar on the support bracket to exchange the support beam slabs, the step by step decentralization of the beam slabs is achieved, which facilitates subsequent crushing operations.
During construction, this structure has a small demand for space on both sides of the bridge and has a small impact on the building, achieving stable and safe demolition of pier bridges and reducing the demand for working space on both sides of the bridge.
Smart Images
Figure CN223017464U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge demolition engineering, in particular to a hydraulic synchronous jacking and bracing structure. Background Technique
[0002] For the conventional demolition of pier bridges, blasting or crushing equipment can be set on both sides of the bridge for crushing. However, when there are buildings adjacent to both sides of the pier bridge and the operation space is limited, the conventional demolition methods in the past are not applicable, and new demolition methods and corresponding structures need to be developed to achieve the stable and safe demolition of the pier bridge when the operation space on both sides is limited. Content of the Utility Model
[0003] In view of this, the utility model provides a hydraulic synchronous jacking and bracing structure, aiming to solve the problem that it is inconvenient to demolish the pier bridge when the operation space on both sides is limited.
[0004] The technical solution of the utility model is realized as follows:
[0005] A hydraulic synchronous jacking and bracing structure is arranged under the beam slab of the pier bridge and includes a bracing bracket and a support foundation;
[0006] The bracing bracket includes a plurality of first vertical columns and second vertical columns. Both the first vertical columns and the second vertical columns include a plurality of columns stacked on top of each other. The adjacent columns in the vertical direction are flange-connected. A jack is arranged at the top of the second vertical column. A transverse connecting rod is connected between the first vertical column and the second vertical column;
[0007] The support foundation is arranged under the bracing bracket and includes a base layer, a cushion layer, a surface layer and a steel plate layer arranged in sequence from bottom to top. The lower ends of both the first vertical column and the second vertical column are connected to the steel plate layer.
[0008] As a further optional scheme, the column includes a column body. Both the upper and lower ends of the column body are provided with end flange connection parts. The side of the column body is provided with a first transverse flange connection part; the two ends of the transverse connecting rod between the first vertical column and the second vertical column are respectively flange-connected to the first transverse flange connection part.
[0009] As a further optional scheme, the jack includes a cylinder body and a piston. The bottom of the cylinder body is flange-connected to the end flange connection part on the column. A second transverse flange connection part is arranged on the periphery of the cylinder body. The jack is connected to the first vertical column through the transverse connecting rod, and the transverse connecting rod is flange-connected to the second transverse flange connection part.
[0010] As a further alternative, the lower ends of the first vertical pillar and the second vertical pillar are welded or bolted to the steel plate layer.
[0011] As a further alternative, leveling pads are fixedly arranged at the bottom of the beam slab, the bottom of the leveling pad has a horizontal abutting surface, and the position of the leveling pad corresponds to the tops of the first vertical pillar and the second vertical pillar.
[0012] As a further alternative, the surface layer is a C30 reinforced concrete foundation with a thickness of 500 mm; the steel plate layer is a steel plate with a thickness of at least 20 mm.
[0013] As a further alternative, the base layer is graded crushed stone with a thickness of 500 mm, and the cushion layer is a C15 concrete cushion layer with a thickness of 100 mm.
[0014] As a further alternative, the support foundation is arranged in the foundation pit.
[0015] The beneficial effects of the present utility model are as follows: The hydraulic synchronous jacking and replacement bracing structure is arranged under the beam slab of the pier column bridge, and has small space requirements on both sides of the pier column bridge during construction and little impact on the buildings on both sides of the bridge; the first vertical pillar and the second vertical pillar on the replacement bracing bracket are used to exchange the support of the beam slab, realizing the step-by-step lowering of the beam slab, facilitating subsequent crushing operations on the lowered beam slab, and reducing the space requirements for operations on both sides of the bridge.
[0016] Other optional objectives and advantages of the present utility model are fully reflected through the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0018] Figure 1 It is a side view schematic diagram of a hydraulic synchronous jacking and replacement bracing structure of the present utility model applied to a pier column bridge;
[0019] Figure 2 is Figure 1 the enlarged view at A in
[0020] Figure 3 It is the structural schematic diagram of the column;
[0021] Figure 4 It is the structural schematic diagram of the jack;
[0022] Figure 5 The top view schematic diagram of a hydraulic synchronous jacking and strut-changing structure of the present utility model applied to pier columns of a bridge;
[0023] Figure 6 One of the state schematic diagrams of a hydraulic synchronous jacking and strut-changing structure of the present utility model during the demolition operation of pier columns of a bridge;
[0024] Figure 7 Another state schematic diagram of a hydraulic synchronous jacking and strut-changing structure of the present utility model during the demolition operation of pier columns of a bridge;
[0025] Figure 8 Still another state schematic diagram of a hydraulic synchronous jacking and strut-changing structure of the present utility model during the demolition operation of pier columns of a bridge;
[0026] Figure 9 is Figure 6 the enlarged view of B in
[0027] In the figure: 100, beam slab; 110, avoidance hole; 200, pier column;
[0028] 1, strut-changing support; 11, first vertical pillar; 12, second vertical pillar; 13, jack; 131, cylinder block; 132, piston; 133, second transverse flange connection part; 14, transverse connecting rod; 15, column; 151, column body; 152, end flange connection part; 153, first transverse flange connection part;
[0029] 2, support foundation; 21, base course; 22, cushion layer; 23, surface layer; 24, steel plate layer;
[0030] 3, leveling cushion block;
[0031] 4, foundation pit. Detailed implementation manners
[0032] Next, the technical solutions in the embodiments of the present utility model will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.
[0033] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.
[0034] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "attachment", "fixation" and the like shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0035] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.
[0036] Reference Figures 1-9 , an embodiment of the present application shows a hydraulic synchronous jacking and replacement bracing structure, which is arranged under the beam slab 100 of a pier bridge and includes a replacement bracing bracket 1 and a support foundation 2; the replacement bracing bracket 1 includes a plurality of first vertical columns 11 and second vertical columns 12, and both the first vertical columns 11 and the second vertical columns 12 include a plurality of columns 15 stacked on top of each other. The adjacent columns 15 in the vertical direction are flange-connected. A jack 13 is arranged at the top of the second vertical column 12, and a transverse connecting rod 14 is connected between the first vertical column 15 and the second vertical column 15; the support foundation 2 is arranged under the replacement bracing bracket 1 and includes a base layer 21, a cushion layer 22, a surface layer 23 and a steel plate layer 24 arranged in sequence from bottom to top. The lower ends of both the first vertical column 15 and the second vertical column 15 are connected to the steel plate layer 24.
[0037] Specifically, as Figures 6-8As shown, the pier-column bridge includes a pier column 200 and a beam slab 100 disposed on the pier column 200. During actual construction, first arrange the replacement support bracket 1 and the support foundation 2 below the beam slab 100, and transfer the support of the beam slab 100 from the pier column 200 to the replacement support bracket 1. When the beam slab 100 is supported by the replacement support bracket 1, cut at the position corresponding to the connection of the pier column 200 on the beam slab 100, and hoist away the cut beam block, so that an avoidance hole 110 is formed on the beam slab 100; cut and segmentally demolish the pier-column bridge. During demolition, first use the jack 13 on the second vertical support 12 to support the beam slab 100. The state at this time is as shown in Figure 6 ; then the jack 13 retracts, causing the beam slab 100 to descend. The beam slab 100 is then supported by the first vertical support 11. The state at this time is as shown in Figure 7 ; when the first vertical support 11 supports the beam slab 100, remove part of the column 15 on the second vertical support 12, so that the height of the position where the jack 13 is located decreases. The jack 13 extends at the new position and re-supports the beam slab 100. When the jack 13 supports the beam slab 100, remove part of the column 15 on the first vertical support 11, so that the first vertical support 15 shortens. Then the jack 13 retracts, and there is a descending space for the beam slab 100. By repeating such operations, the step-by-step lowering of the beam slab 100 is achieved. The final state is as shown in Figure 8 .
[0038] Wherein, the number and positions of the first vertical support 11 and the second vertical support 12 can be set according to actual needs, as long as the stable support of the beam slab 100 can be achieved; as shown in Figure 5 , one distribution structure of the first vertical support 11 and the second vertical support 12 is shown.
[0039] Wherein, during the step-by-step lowering of the beam slab 100, the pier column 200 can limit the avoidance hole 110 on the beam slab 100, prevent the beam slab 100 from tipping to both sides, and improve the safety during the lowering of the beam slab 100.
[0040] In addition, it should be noted that the land under the pier-column bridge may have insufficient flatness and soft soil quality, and is not sufficient to bear the weight of the beam slab 100; while the support foundation 2 in this embodiment can achieve the leveling of the ground, and improve the support structure strength under the replacement support bracket 1, preventing the situation of tipping to the side when the replacement support bracket 1 supports the beam slab 100;
[0041] In some embodiments, as shown in Figure 6 and Figure 9 , the surface layer 23 is a C30 reinforced concrete foundation with a thickness of at least 500 mm; the steel plate layer 24 is a steel plate with a thickness of at least 20 mm. The base layer 21 is 500 mm thick graded crushed stone, and the cushion layer 22 is a 100 mm thick C15 concrete cushion.
[0042] In this embodiment, a good support is provided by the base course 21, the cushion course 22 and the surface course 23, and the steel plate layer 24 can help disperse the pressure of the replacement support bracket 1 onto the surface course 23, improving the stability of the force-bearing structure.
[0043] In some embodiments, such as Figure 3 , Figure 4 and Figure 6 shown, the column 15 includes a column body 151, end flange connection parts 152 are provided at both the upper and lower ends of the column body 151, and a first horizontal flange connection part 153 is provided on the side surface of the column body 151; both ends of the horizontal connecting rod 14 between the first vertical column 15 and the second vertical column 15 are flange-connected to the first horizontal flange connection part 153 respectively. The jack 13 includes a cylinder body 131 and a piston 132, the bottom of the cylinder body 131 is flange-connected to the end flange connection part 152 on the column 15, a second horizontal flange connection part 133 is provided on the peripheral side of the cylinder body 131, the jack 13 is connected to the first vertical column 15 through the horizontal connecting rod 14, and the horizontal connecting rod 14 is flange-connected to the second horizontal flange connection part 133.
[0044] In this embodiment, flange connections are formed among the column 15, the horizontal connecting rod 14 and the jack 13, which can be disassembled while ensuring the structural stability; among them, as Figure 2 shown, the column 15 can have different length specifications and can be designed according to actual needs.
[0045] In some embodiments, such as Figure 2 shown, a leveling cushion block 3 is fixedly arranged at the bottom of the beam slab 100, the bottom of the leveling cushion block 3 has a horizontal abutting surface, and the position of the leveling cushion block 3 corresponds to the tops of the first vertical column 15 and the second vertical column 15.
[0046] Among them, the leveling cushion block 3 is made of steel. On the one hand, by using the large-area contact between the leveling cushion block 3 and the beam slab 100, it is avoided that the column 15 or the jack 13 is in direct contact with the beam slab 100, which is beneficial to dispersing the jacking force of the column 15 / jack 13 and preventing the situation that the bottom of the beam slab 100 is broken due to the small-area contact between the column 15 / jack 13 and the beam slab 100 and the resulting unstable support; on the other hand, the bottom of the beam slab 100 is not flat, and by using the leveling cushion block 3 for indirect contact, the beam slab 100 can be supported by a vertical force as much as possible, improving the stability when the beam slab 100 is lowered and avoiding the situation that the beam slab 100 tilts, undergoes lateral displacement or overturns during the lowering process.
[0047] In some embodiments, in order to enable the beam slab 100 to be lowered to a height closer to the ground, such asFigures 6-9 As shown, the support foundation 2 is provided in the foundation pit 4. In this way, there is enough space between the support foundation 2 and the beam-slab 100 for workers to operate on removing the column 15.
[0048] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A hydraulic synchronous lifting and supporting structure, which is arranged below the beam and slab of a pier bridge, characterized in that: Including the support bracket and the support foundation; The support replacement bracket includes a plurality of first vertical pillars and a second vertical pillar, each of the first vertical pillar and the second vertical pillar includes a plurality of stacked columns, vertically adjacent columns are flange-connected, a jack is disposed on the top of the second vertical pillar, and a transverse connecting rod is connected between the first vertical pillar and the second vertical pillar; The supporting foundation is arranged below the support replacement bracket, and includes a base layer, a cushion layer, a surface layer and a steel plate layer arranged in sequence from bottom to top, and the lower ends of the first vertical support and the second vertical support are both connected to the steel plate layer.
2. The hydraulic synchronous lifting and supporting structure according to claim 1 is characterized in that: The column includes a column body, and end flange connection parts are provided at the upper and lower ends of the column body, and a first transverse flange connection part is provided on the side of the column body; the two ends of the transverse connecting rod between the first vertical support and the second vertical support are flange-connected to the first transverse flange connection part respectively.
3. The hydraulic synchronous lifting and supporting structure according to claim 2 is characterized in that: The jack includes a cylinder body and a piston. The bottom of the cylinder body is flange-connected to the end flange connection part on the column. A second transverse flange connection part is provided on the circumference of the cylinder body. The jack is connected to the first vertical support column through the transverse connecting rod, and the transverse connecting rod is flange-connected to the second transverse flange connection part.
4. The hydraulic synchronous lifting and supporting structure according to claim 1 is characterized in that: The lower ends of the first vertical support and the second vertical support are welded or bolted to the steel plate layer.
5. The hydraulic synchronous lifting and supporting structure according to claim 1 is characterized in that: A leveling pad is fixedly arranged at the bottom of the beam slab, the bottom of the leveling pad has a horizontal abutting surface, and the position of the leveling pad corresponds to the top of the first vertical support and the second vertical support.
6. The hydraulic synchronous lifting and supporting structure according to any one of claims 1 to 5, characterized in that: The surface layer is a C30 reinforced concrete foundation with a thickness of at least 500 mm; the steel plate layer is a steel plate with a thickness of at least 20 mm.
7. The hydraulic synchronous lifting and supporting structure according to claim 6 is characterized in that: The base layer is 500 mm thick graded crushed stone, and the cushion layer is 100 mm thick C15 concrete cushion layer.
8. The hydraulic synchronous lifting and supporting structure according to claim 6 is characterized in that: The supporting foundation is arranged in the foundation pit.