Tower beam temporary consolidation device for cable-stayed bridge dismantling

Abstract

The utility model belongs to the technical field of bridge engineering, and provides a temporary tower beam consolidation device for cable-stayed bridge dismantling. The device is mainly composed of an anti-skid pad, a limiting block, an anchor bolt, a limiting hole, a pin, a telescopic rod, a hydraulic cylinder, a piston and a hinged support. The limiting block and the non-slip mat are connected with the main beam through anchor bolts and hinged to the telescopic rod, the hinge point can move in the limiting hole, the tail end of the telescopic rod is connected with the piston and sleeved with the hydraulic cylinder, the hydraulic cylinder is filled with hydraulic oil, the hydraulic cylinder is hinged to the hinged support, and the hinged support is anchored to the lower tower column through the anchor bolts. The temporary consolidation device for the tower beam is used for temporary consolidation of the tower beam when a cable-stayed bridge is dismantled, concrete does not need to be poured newly, so that the consistency problem of the concrete is avoided, the internal force of the telescopic rod can be detected and adjusted at any time, and the device is convenient to install and remove and can be reused.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge engineering and relates to a temporary consolidation device for tower-beam of cable-stayed bridge demolition. Background Art

[0002] With the continuous development of China's transportation road engineering, some existing bridges cannot meet the navigation requirements due to insufficient clearance under the bridge, or the traffic capacity of the bridge itself is low and cannot bear the increasing traffic volume. It is urgent to demolish and reconstruct these bridges. At present, the main methods for demolishing cable-stayed bridges are blasting method and reverse process demolition method. When using the reverse process demolition method, the pylon and the main beam need to be temporarily consolidated to increase the structural stiffness and ensure the safe progress of the demolition process.

[0003] Traditional temporary consolidation devices mainly set anti-overturning tie rods composed of steel bars or prestressed steel tendons between the pier body and the beam body. The two ends of the tie rods extend into the pier body and the beam body respectively to anchor the beam body and prevent the beam body from overturning. The prestressed steel tendons are grouted and sealed after tensioning. However, this consolidation method is not suitable for the tower-beam consolidation during the demolition of cable-stayed bridges. First, pouring concrete is required for this method, but it is difficult to ensure the consistency of the concrete, and a large amount of time is needed for curing, resulting in a long construction period. Second, it is difficult to construct when releasing the traditional consolidation method, and relatively more labor and mechanical shifts are required, with poor economic benefits.

[0004] For the above reasons, it is necessary to seek a temporary consolidation device during the demolition of cable-stayed bridges. Content of the Utility Model

[0005] The utility model provides a temporary consolidation device during the demolition of cable-stayed bridges to solve the defects existing in traditional temporary consolidation construction and make the demolition construction of cable-stayed bridges safe and fast.

[0006] The technical solution of the utility model is as follows:

[0007] A temporary consolidation device for tower-beam of cable-stayed bridge demolition includes an anti-slip pad, a limit block, anchor bolts, limit holes, pins, telescopic rods, hydraulic cylinders, pistons and hinge seats;

[0008] The anti-slip pad is in close contact with the bottom of the main beam and is fixed to the bottom of the main beam together with the limit block by anchor bolts to prevent the limit block from having longitudinal displacement;

[0009] The limit block is provided with limit holes, pins are inserted into the limit holes, and the pins are hinged to the lower telescopic rods;

[0010] The pins move vertically along the limit holes to ensure the smooth installation of the temporary consolidation device for tower-beam;

[0011] There is a gap between the limit block and the telescopic rod horizontally to prevent the temporary consolidation device of the tower and beam from being damaged due to the horizontal displacement of the main beam during the construction process;

[0012] The end of the telescopic rod is connected to a piston, and a hydraulic cylinder is sleeved outside. Hydraulic oil is filled between the piston and the hydraulic cylinder to control the telescopic movement of the telescopic rod;

[0013] The hydraulic cylinder is hinged to the hinge seat by a pin and fixed to the lower tower column of the cable tower with anchor bolts.

[0014] The anti-slip pad is made of rubber.

[0015] The linear shape of the top of the limit block is determined according to the linear shape of the bottom plate of the main beam to ensure that the top of the limit block fits with the bottom of the main beam.

[0016] The anchor bolts for fixing the limit block are arranged in a quadrilateral shape, and the anchor bolts for fixing the hinge seat are arranged in a plum blossom shape, aiming to prevent the main beam from being damaged due to excessive concrete stress around the anchor bolts.

[0017] The beneficial effects of the present utility model:

[0018] 1. The temporary consolidation device of the present utility model has a very simple and clear structure and is convenient for construction;

[0019] 2. The temporary consolidation device of the present utility model does not require pouring concrete, avoiding the problems of concrete inconsistency and curing problems, and shortening the construction period;

[0020] 3. The method of releasing the consolidation of the temporary consolidation device of the present utility model is simple. Only by adjusting the hydraulic device to contract the telescopic rod can the consolidation be released, and relatively less manpower and mechanical working shifts are required;

[0021] 4. The temporary consolidation device of the present utility model can read the hydraulic pressure at any time through the hydraulic device to calculate the internal force of the telescopic rod and make adjustments, so as to monitor and control the demolition construction process and improve the construction safety;

[0022] 5. The temporary consolidation device of the present utility model can be reused after the consolidation is released, avoiding resource waste to a certain extent and saving costs. Description of the Drawings

[0023] Figure 1 is the front view of the embodiment of the present utility model;

[0024] Figure 2 is Figure 1 the detailed structure diagram within the dotted circle;

[0025] Figure 3 is the top view of the embodiment of the present utility model;

[0026] Figure 4 isFigure 3 Detailed view of the structure inside the dashed-line circle, where (a) is the left view and (b) is the front view.

[0027] In the figure: 1 main beam, 2 support, 3 lower tower column of the cable tower, 4 anti-slip pad, 5 limit block, 6 anchor bolt, 7 limit hole, 8 pin, 9 telescopic rod, 10 hydraulic cylinder, 11 piston, 12 hydraulic oil, 13 hinge seat. Specific implementation mode

[0028] The following further illustrates the specific implementation mode of the present utility model in conjunction with the attached drawings and technical solutions.

[0029] As Figure 1 and Figure 2 shown, a temporary consolidation device for the tower and beam during the demolition of a cable-stayed bridge includes an anti-slip pad 4, a limit block 5, an anchor bolt 6, a limit hole 7, a pin 8, a telescopic rod 9, a hydraulic cylinder 10, a piston 11, hydraulic oil 12, and a hinge seat 13.

[0030] The material of the anti-slip pad 4 is rubber, which is in close contact with the bottom of the main beam 1, is closely attached to the limit block 5 below, and is fixed to the bottom of the main beam 1 together with the limit block 5 by the anchor bolt 6; the top line shape of the limit block 5 is determined according to the line shape of the bottom plate of the main beam 1 and fits with the bottom plate of the main beam 1; a limit hole 7 is opened on the limit block 5, a pin 8 is inserted into the limit hole 7, and the pin 8 is hinged to the telescopic rod 9; there is a gap between the limit block 5 and the telescopic rod 9 horizontally. The end of the telescopic rod 9 is connected to the piston 11, and the hydraulic cylinder 10 is sleeved outside. The hydraulic oil 12 is filled between the piston 11 and the hydraulic cylinder 10; the hydraulic cylinder 10 and the hinge seat 13 are hinged by the pin 8 and fixed to the lower tower column 3 of the cable tower by the anchor bolt 6; the anchor bolts 6 for fixing the limit block 5 are arranged in a quadrilateral shape, and the anchor bolts 6 for fixing the hinge seat 13 are arranged in a plum blossom shape.

[0031] The present utility model is applied in the construction of cable-stayed bridge demolition, and the installation construction process is as follows:

[0032] (1) Determine the installation positions of the limit block 5 and the hinge seat 13 on the bottom of the main beam 1 and the lower tower column 3 of the cable tower respectively, drill holes, the holes on the bottom of the main beam 1 are arranged in a quadrilateral shape, and the holes on the lower tower column 3 are arranged in a plum blossom shape;

[0033] (2) Fix the anti-slip pad 4 and the limit block 5 to the bottom of the main beam 1 with the anchor bolt 6, and fix the hinge seat 13 to the lower tower column 3 of the cable tower;

[0034] (3) After filling the hydraulic oil 12 into the hydraulic cylinder 10, assemble the telescopic rod 9, the hydraulic cylinder 10, and the piston 11, and then hinge the hydraulic cylinder 10 and the hinge seat 13 with the pin 8;

[0035] (4) Align the holes on the telescopic rod 9 with the limit holes 7 on the limit block 5 and then pass the pin 8 through;

[0036] (5) Control the hydraulic device to extend the telescopic rod 9, and the pin 8 moves upward along the limit hole 7 until it reaches the top of the limit hole 7. Temporary consolidation of the pylon and girder can be achieved by increasing the pressure of the hydraulic devices on both sides of the pylon.

[0037] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A temporary consolidation device for the tower and beam of a cable-stayed bridge demolition, characterized in that The temporary consolidation device for the tower and beam includes an anti-slip pad, a limit block, anchor bolts, limit holes, pins, telescopic rods, hydraulic cylinders, pistons and hinge seats; The anti-slip pad is in close contact with the bottom of the main beam and is fixed to the bottom of the main beam together with the limit block by anchor bolts to prevent the longitudinal displacement of the limit block; The limit block is provided with limit holes, and pins are inserted into the limit holes. The pins are hinged to the lower telescopic rods; the pins move vertically along the limit holes to ensure the smooth installation of the temporary consolidation device for the tower and beam; A gap is left transversely between the limit block and the telescopic rod to prevent the temporary consolidation device for the tower and beam from being damaged due to the lateral displacement of the main beam during construction; The end of the telescopic rod is connected to the piston, and a hydraulic cylinder is sleeved outside. Hydraulic oil is filled between the piston and the hydraulic cylinder to control the expansion and contraction of the telescopic rod; The hydraulic cylinder is hinged to the hinge seat by a pin and fixed to the lower tower column of the cable tower by an anchor bolt.

2. The temporary consolidation device for tower and beam according to claim 1, characterized in that The linear shape of the top of the limit block is determined according to the linear shape of the bottom plate of the main beam to ensure the fit between the top of the limit block and the bottom of the main beam.

3. The temporary consolidation device for tower and beam according to claim 1, characterized in that, The anchor bolts for fixing the limit block are arranged in a quadrilateral shape, and the anchor bolts for fixing the hinge seat are arranged in a plum blossom shape to prevent the main beam from being damaged due to excessive concrete stress around the anchor bolts.

4. The temporary consolidation device for tower and beam according to claim 1, characterized in that The material of the anti-slip pad is rubber.

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