Adjustable supporting structure of tunnel inverted arch trestle supporting leg

Abstract

The utility model discloses an adjustable supporting structure of a tunnel inverted arch trestle landing leg, which belongs to the technical field of tunnel construction and comprises an adjustable head arranged at the bottom of the landing leg. The adjustable head base is arranged on the ground, the adjustable head is connected with the top of the adjustable head base through a fixing assembly, and the fixing assembly is used for restraining the adjustable head. The adjustable head below the supporting leg can freely rotate at any angle from the horizontal plane to the vertical plane to adapt to the supporting surface with any gradient, so that the working difficulty of the trestle is reduced, the construction efficiency is improved, and the potential safety hazard of construction is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel construction technology, and specifically relates to a flexible support structure for the legs of a tunnel arch bridge. Background Technology

[0002] The disadvantages of the existing tunnel arch bridge support structure are as follows: During the operation of the tunnel arch bridge, the tunnel support surface is not always horizontal. When there is a certain slope on the tunnel support surface, the horizontal support legs will cause the bridge to be unstable under stress, which will lead to tilting, overturning or even more serious problems such as beam tearing during bridge operation. Utility Model Content

[0003] To solve the above problems, the present invention adopts the following technical solution:

[0004] A flexible support structure for the legs of a tunnel arch bridge includes:

[0005] A hinged head, wherein the hinged head is disposed at the bottom of the outrigger;

[0006] A hinged head base is provided, which is set on the ground. The hinged head is connected to the top of the hinged head base by a fixing component, which is used to constrain the hinged head.

[0007] Furthermore, the hinge head is connected to the bottom of the support leg via a threaded connection.

[0008] Furthermore, the bottom of the adjustable head is hemispherical, and the adjustable head base is provided with a circular groove that matches the bottom of the adjustable head; the bottom of the adjustable head is mounted on the circular groove of the adjustable head base by the fixing component.

[0009] Furthermore, the fixing assembly includes a first positioning plate, a second positioning plate, and two high-strength bolts;

[0010] The first positioning plate and the second positioning plate are disposed opposite to each other on both sides of the circular groove of the flex head base; wherein, the first positioning plate and the second positioning plate have the same structure, and the first positioning plate is provided with two oppositely disposed through holes;

[0011] Two high-strength bolts are located on both sides of the swivel head; wherein, the first end of the high-strength bolt passes through one of the through holes of the first positioning plate, and the second end passes through the through hole of the second positioning plate corresponding to the through hole of the first positioning plate, for limiting the position of the swivel head.

[0012] Furthermore, the distance between the two perforations on the first positioning plate is smaller than the diameter of the hemisphere of the activator head.

[0013] Furthermore, the first positioning plate and the second positioning plate are integrally formed with the movable head base.

[0014] Furthermore, the perforation in the first positioning plate is an oblong hole.

[0015] The beneficial effects of this utility model are:

[0016] The flexible head under the outrigger can rotate freely at any angle from the horizontal to the vertical plane to adapt to any slope of the outrigger surface, reducing the difficulty of trestle bridge construction, improving construction efficiency, and reducing construction safety hazards. Attached Figure Description

[0017] Figure 1 This is the front view of the present invention;

[0018] Figure 2 This is a side view of the present invention;

[0019] Figure 3 This is a cross-sectional view of the flexible support structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the flexible support structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the movable head base of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the flexible head of this utility model;

[0023] In the diagram: 1. Hinged head base; 2. First positioning plate; 3. Circular groove; 4. Hinged head; 5. High-strength bolt. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] Example 1

[0026] refer to Figures 1-6 A flexible support structure for the legs of a tunnel arch bridge, comprising:

[0027] Hinged head 4, the hinged head is located at the bottom of the outrigger;

[0028] The adjustable head base 1 is set on the ground, and the adjustable head 4 is connected to the top of the adjustable head base 1 by a fixing component, which is used to constrain the adjustable head 4.

[0029] Preferably, the movable head 4 is connected to the bottom of the support leg via a threaded connection.

[0030] Preferably, the bottom of the adjustable head 4 is hemispherical, and the adjustable head base 1 is provided with a circular groove 3 that matches the bottom of the adjustable head 4; the bottom of the adjustable head 4 is fixed on the circular groove 3 of the adjustable head base 1 by a fixing component.

[0031] Preferably, the fixing assembly includes a first positioning plate 2, a second positioning plate, and two high-strength bolts 5;

[0032] The first positioning plate 2 and the second positioning plate are arranged opposite to each other on both sides of the circular groove 3 of the movable head base 1; wherein, the first positioning plate 2 and the second positioning plate have the same structure, and the first positioning plate 2 is provided with two oppositely arranged through holes.

[0033] Two high-strength bolts 5 are located on both sides of the swivel head 3; wherein, the first end of the high-strength bolt 5 passes through one of the through holes of the first positioning plate 2, and the second end passes through the through hole of the second positioning plate corresponding to the through hole of the first positioning plate 2, which is used to limit the position of the swivel head 4.

[0034] Preferably, the distance between the two perforations of the first positioning plate 2 is less than the diameter of the hemisphere of the activator head 4.

[0035] Preferably, the first positioning plate 2 and the second positioning plate are integrated with the movable head base 1.

[0036] Preferably, the perforation of the first positioning plate 2 is an oblong hole.

[0037] Working principle: The swivel head base is installed to the ground according to the actual situation. Simultaneously, the swivel head is connected to the bottom of the outrigger by threads. The swivel head base and the swivel head are constrained by a suspension structure composed of positioning plates and high-strength bolts. The circular groove and suspension structure simultaneously apply vertical and horizontal constraints to the swivel head, thereby enhancing stability. The first and second positioning plates, connected by high-strength bolts, are integrated with the swivel head base, allowing the swivel head at the bottom of the outrigger to rotate freely at any angle from the horizontal to the vertical plane, adapting to any slope of the outrigger surface. This reduces the difficulty of trestle bridge construction, improves construction efficiency, and also reduces construction safety hazards.

[0038] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model are included within the protection scope of this utility model.

Claims

1. A flexible support structure for the legs of a tunnel arch bridge, characterized in that, include: A hinged head, wherein the hinged head is disposed at the bottom of the outrigger; A hinged head base is provided, which is set on the ground. The hinged head is connected to the top of the hinged head base by a fixing component, which is used to constrain the hinged head. The bottom of the adjustable head is hemispherical, and the adjustable head base is provided with a circular groove that matches the bottom of the adjustable head; the bottom of the adjustable head is set on the circular groove of the adjustable head base by the fixing component.

2. The flexible support structure for the legs of a tunnel arch bridge according to claim 1, characterized in that, The hinge head is connected to the bottom of the support leg via a threaded connection.

3. The flexible support structure for the legs of a tunnel arch bridge according to claim 1, characterized in that, The fixing assembly includes a first positioning plate, a second positioning plate, and two high-strength bolts; The first positioning plate and the second positioning plate are disposed opposite to each other on both sides of the circular groove of the flex head base; wherein, the first positioning plate and the second positioning plate have the same structure, and the first positioning plate is provided with two oppositely disposed through holes; Two high-strength bolts are located on both sides of the swivel head; wherein, the first end of the high-strength bolt passes through one of the through holes of the first positioning plate, and the second end passes through the through hole of the second positioning plate corresponding to the through hole of the first positioning plate, for limiting the position of the swivel head.

4. The flexible support structure for the legs of a tunnel arch bridge according to claim 3, characterized in that, The distance between the two perforations on the first positioning plate is less than the diameter of the hemisphere of the movable head.

5. The flexible support structure for the legs of a tunnel arch bridge according to claim 3, characterized in that, The first positioning plate and the second positioning plate are integrated with the movable head base.

6. The flexible support structure for the legs of a tunnel arch bridge according to claim 5, characterized in that, The perforation of the first positioning plate is an oblong hole.

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