A support system for dismantling an arch bridge

Abstract

The utility model belongs to the technical field of support systems, specifically a support system for dismantling an arch bridge, including a support unit, an adjustment unit and a monitoring unit, the adjustment unit including a hydraulic jack, a wedge and a height-adjustable pad, the hydraulic jack is arranged on the support unit, the wedge is arranged on the hydraulic jack and the top of the wedge fits the main arch ring of the arch bridge, the height-adjustable pad is arranged on the support unit to support the fixed wedge; the monitoring unit includes a displacement meter and a hydraulic center console, the displacement meter is arranged on the support unit and connected to the hydraulic center console, and the hydraulic center console is connected to the hydraulic jack. The utility model solves the problem that the temporary support bracket cannot bear force due to the deflection of the main arch ring due to the removal of the upper structure and the detachment of the support bracket and the main arch ring during the dismantling of the arch bridge.

Description

Technical Field

[0001] The utility model relates to the technical field of support systems, in particular to a support system for dismantling an arch bridge. Background Art

[0002] Arch bridges play an important role in urban road construction. However, as time goes by and the frequency of use increases, the aging and damage of arch bridges gradually become apparent. If they are not dismantled and replaced in time, they will pose a threat to the safety of vehicles and pedestrians. Therefore, arch bridge dismantling is a necessary measure for urban road construction.

[0003] At present, the arch bridge cannot be demolished as a whole due to various factors, so it is necessary to adopt block cutting for demolition. According to the block situation, temporary support needs to be set at the mid-span or 1 / 4 span to bear the load of the main arch ring. The main arch ring is deflected due to the demolition of the upper structure, and the temporary support frame is detached from the main arch ring, resulting in the temporary support frame being unable to bear the force. Summary of the invention

[0004] The utility model aims at solving the above problems and provides a support system for dismantling an arch bridge. The support system can solve the problem that when the arch bridge is dismantled, the main arch ring is deflected due to the dismantling of the upper structure, and the support bracket and the main arch ring are detached, resulting in the temporary support bracket being unable to bear force.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] A support system for dismantling an arch bridge, comprising:

[0007] Support unit,

[0008] An adjustment unit, the adjustment unit comprising a hydraulic jack, a wedge and a height-adjustable pad, the hydraulic jack being arranged on the support unit, the wedge being arranged on the hydraulic jack and the top of the wedge being in contact with the main arch ring of the arch bridge, and the height-adjustable pad being arranged on the support unit for supporting and fixing the wedge;

[0009] The monitoring unit includes a displacement meter and a hydraulic center console. The displacement meter is arranged on the supporting unit and connected to the hydraulic center console. The hydraulic center console is connected to the hydraulic jack through an oil pump.

[0010] Furthermore, the support unit includes columns, connecting rods, longitudinal beams and cross beams. There are multiple columns, and the multiple columns are connected by connecting rods. One end of each column is fixed to the ground, and a longitudinal beam is fixed on the other end of each column; the cross beam is fixed on the longitudinal beam, and the hydraulic jack, height-adjustable support pad and monitoring unit are fixed on the cross beam at intervals.

[0011] Furthermore, the regulating units are provided with two or more, and the two or more regulating units are arranged at intervals.

[0012] Furthermore, limiting plates for limiting the lateral movement of the main arch ring are provided on both sides of each adjusting unit.

[0013] Furthermore, each adjustment unit includes two hydraulic jacks, a wedge block and a height-adjustable support pad. The two hydraulic jacks are arranged on the support unit at intervals, the wedge block is fixed across the top of the two hydraulic jacks, and the height-adjustable support pad is arranged between the two hydraulic jacks to support the middle part of the bottom surface of the wedge block.

[0014] Furthermore, a first stiffening plate is fixedly provided on one side of the longitudinal beam and connected between the bottom of the longitudinal beam and the top of the column.

[0015] Furthermore, a second stiffening plate is fixedly provided on one side of the cross beam and on the top of the longitudinal beam.

[0016] Furthermore, the height-adjustable support pad comprises a plurality of stacked steel plates, and the thickness of each steel plate is 2 cm.

[0017] By adopting the above technical solution, the beneficial effects of the present invention are:

[0018] The utility model provides an adjustment unit including a hydraulic jack, a wedge block and a height-adjustable pad on the support unit, so that the utility model can avoid the situation where the hydraulic jack shrinks after oil leakage and the wedge block has no support due to long-term force through the height-adjustable pad; at the same time, by providing a control unit including a displacement meter and a hydraulic center console on the support unit, the utility model can monitor the deflection of the main arch ring in real time through the displacement meter, and adjust the position of the wedge block in real time through the hydraulic center console and the hydraulic jack so that the wedge block is always in close contact with the main arch ring, thereby preventing the support system from being detached from the main arch ring when the arch bridge is dismantled. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a support system for dismantling an arch bridge according to the utility model;

[0020] Figure 2 This is a partial enlarged view of point A in a support system for dismantling an arch bridge according to the utility model.

[0021] In the attached drawings, 100, main arch ring; 1, column; 2, connecting rod; 3, longitudinal beam; 4, cross beam; 5, first stiffening plate; 6, second stiffening plate; 7, hydraulic jack; 8, wedge block; 9, height-adjustable support pad; 10, limit plate; 11, displacement meter. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present utility model, it should be noted that the terms "upper" and "lower" etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present utility model.

[0024] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. Example

[0025] See also Figure 1 and Figure 2 , a support system for arch bridge dismantling, including a support unit, an adjustment unit and a monitoring unit.

[0026] The support unit is a column-type frame structure, which is used to realize the support function of temporary support for arch bridge dismantling. It mainly includes multiple columns 1, connecting rods 2, longitudinal beams 3 and cross beams 4, etc., and the components are fixed by welding. Column 1 uses φ630*10mm steel pipes to be inserted into the soil layer to transfer the main arch ring 100 load of the arch bridge to the ground. The connecting rod 2 uses φ325*10 steel pipes to connect each column 1 to increase the lateral stability of the column 1. The longitudinal beam 3 is supported and fixed on the top of the column 1, and the cross beam 4 is supported and fixed on the top of the longitudinal beam 3. Both the cross beam 4 and the longitudinal beam 3 are made of double-piece 45 I-beams, which are used to transfer the main arch ring 100 load to the column 1 and provide a working platform for the adjustable unit and the monitoring unit.

[0027] In this embodiment, a first stiffening plate 5 is fixedly provided on one side of the longitudinal beam 3 between the bottom of the longitudinal beam 3 and the top of the column 1 to improve the connection stability between the longitudinal beam 3 and the column 1. A second stiffening plate 6 is fixedly provided on one side of the cross beam 4 and located at the top of the longitudinal beam 3 to improve the connection stability between the cross beam 4 and the longitudinal beam 3.

[0028] The adjustment unit includes a hydraulic jack 7, a wedge 8 and a height-adjustable support pad 9. The hydraulic jack 7 is arranged on the crossbeam 4. The wedge 8 is arranged on the hydraulic jack 7 and the top of the wedge 8 is in contact with the main arch ring 100 of the arch bridge. The height-adjustable support pad 9 is arranged on the crossbeam 4 to support and fix the wedge 8. The wedge 8 is welded by a 2 cm thick steel plate group to adapt to the slope of the main arch ring 100. The height-adjustable support pad 9 is stacked by a plurality of 2 cm thick steel plates to fill the gap at the bottom of the wedge 8 after the hydraulic jack 7 is extended. For example, when the hydraulic jack 7 is extended, the height of the height-adjustable support 9 can be adjusted (increased) by adding the number of steel plates to support the bottom of the wedge 8, thereby avoiding the hydraulic jack 7 from shrinking after oil leakage due to long-term stress and the wedge 8 being unsupported.

[0029] Two or more adjustment units can be arranged in the support system of the utility model, and the two or more adjustment units are arranged at intervals between the top of the cross beam 4 and the bottom of the main arch ring 100. Limiting plates 10 for limiting the lateral movement of the main arch ring 100 are also arranged on both sides of each adjustment unit. Each adjustment unit includes two hydraulic jacks 7, a wedge block 8 and a height-adjustable support pad 9. The two hydraulic jacks 7 are fixedly arranged on the cross beam 4 at intervals, the wedge block 8 is fixedly arranged on the top of the two hydraulic jacks 7 across, and the height-adjustable support pad 9 is arranged between the two hydraulic jacks 7 to support the middle part of the bottom surface of the wedge block 8.

[0030] The monitoring unit mainly includes a displacement meter 11 and a hydraulic console (not shown). The displacement meter 11 is arranged on the crossbeam 4 and connected to the hydraulic console. The hydraulic console is connected to the hydraulic jack 7 through an oil pump (not shown). The displacement meter 11 can monitor the deflection of the main arch ring 100 in real time and transmit the monitored data to the hydraulic console. During monitoring, the displacement meter 11 is first set on the crossbeam 4 in advance. Since the main arch ring 100 deflects due to the removal of the upper structure when the arch bridge is dismantled, the displacement meter 11 collects the corresponding deflection value and transmits it to the hydraulic console. The hydraulic console starts the oil pump according to the data of the displacement meter 11 to increase the oil pressure of the hydraulic jack 7 to adjust the elongation length of the hydraulic jack 7, so as to adjust the height of the wedge block 8 in real time, and ensure that the wedge block 8 is in close contact with the main arch ring 100 in real time to transfer the load of the main arch ring 100. Therefore, the utility model adopts the hydraulic center console and the hydraulic jack 7 to adjust the position of the wedge block 8 in real time so that it is always in close contact with the main arch ring 100, thereby preventing the temporary support system of the utility model from being detached from the main arch ring.

[0031] Therefore, the utility model sets an adjustment unit including a hydraulic jack 7, a wedge block 8 and a height-adjustable support pad 9 on the support unit, so that the utility model can avoid the hydraulic jack 7 from shrinking after oil leakage due to long-term stress and the wedge block 8 from being unsupported through the height-adjustable support pad 9. At the same time, by setting a control unit including a displacement meter 11 and a hydraulic center console on the support unit, the utility model can monitor the deflection of the main arch ring 100 in real time through the displacement meter 11, and adjust the position of the wedge block 8 in real time through the hydraulic center console and the hydraulic jack 7 so that it is always in close contact with the main arch ring 100, thereby preventing the support system from being detached from the main arch ring when the arch bridge is dismantled.

Claims

1. A support system for dismantling an arch bridge, characterized in that: include Support unit, An adjustment unit, the adjustment unit comprising a hydraulic jack, a wedge and a height-adjustable pad, the hydraulic jack being arranged on the support unit, the wedge being arranged on the hydraulic jack and the top of the wedge being in contact with the main arch ring of the arch bridge, and the height-adjustable pad being arranged on the support unit for supporting and fixing the wedge; The monitoring unit includes a displacement meter and a hydraulic center console. The displacement meter is arranged on the supporting unit and connected to the hydraulic center console. The hydraulic center console is connected to the hydraulic jack.

2. A support system for dismantling an arch bridge according to claim 1, characterized in that: The support unit includes columns, connecting rods, longitudinal beams and cross beams. There are multiple columns, and the multiple columns are connected by connecting rods. One end of each column is fixed to the ground, and a longitudinal beam is fixed on the other end of each column; the cross beam is fixed on the longitudinal beam, and the hydraulic jack, height-adjustable support pad and monitoring unit are fixed on the cross beam at intervals.

3. The support system for dismantling an arch bridge according to claim 1, characterized in that: There are two or more adjusting units, and the two or more adjusting units are arranged at intervals.

4. A support system for dismantling an arch bridge according to claim 3, characterized in that: Limiting plates for limiting the lateral movement of the main arch ring are also provided on both sides of each adjusting unit.

5. The support system for dismantling an arch bridge according to claim 3, characterized in that: Each adjustment unit includes two hydraulic jacks, a wedge block and a height-adjustable support pad. The two hydraulic jacks are arranged on the support unit at intervals, the wedge block is fixed across the top of the two hydraulic jacks, and the height-adjustable support pad is arranged between the two hydraulic jacks to support the middle part of the bottom surface of the wedge block.

6. The support system for dismantling an arch bridge according to claim 2, characterized in that: One side of the longitudinal beam is connected to the bottom of the longitudinal beam and the top of the column and a first stiffening plate is fixedly arranged therebetween.

7. A support system for dismantling an arch bridge according to claim 2, characterized in that: A second stiffening plate is also fixedly provided on one side of the cross beam and on the top of the longitudinal beam.

8. The support system for dismantling an arch bridge according to claim 1, characterized in that: The height-adjustable support pad comprises a plurality of stacked steel plates, each of which has a thickness of 2 cm.

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