A fixing device and construction method for crossing an existing road

Abstract

The present application relates to a fixing device for crossing an existing road and a construction method, belonging to the technical field of bridge construction. It includes a first column vertically arranged below one of the bridges, a second column vertically arranged below the other bridge, a first steel beam horizontally arranged between the bridge and the first column, a second steel beam horizontally arranged between the bridge and the second column, a positioning component arranged on the first steel beam. The first steel beam is connected to the first column and the bridge close to it. The second steel beam is slidably connected to the second column along its own length direction and is connected to the bridge close to it; the positioning component is used to drive the first steel beam and the second steel beam to be arranged opposite to each other. The present application can improve the construction efficiency of the bridge.

Description

Technical Field

[0001] This application relates to the technical field of bridge construction, and in particular to a fixing device and construction method for crossing an existing road. Background Art

[0002] With the expansion of the scale of highway construction in China, during highway construction, there are more and more cases of overpass construction and construction across busy expressways, and various large-span and large-tonnage bridge structures have emerged as the times require. The incremental launching construction of bridges is favored by the majority of bridge builders because of its simple construction method, safety and reliability, economic application, and little construction interference.

[0003] During the bridge construction process, first, the two sections of the bridge completed by incremental launching are positioned and docked so that the two sections of the bridge are directly opposite. Then, a temporary fixing device is built and the two positioned sections of the bridge are fixed through the temporary fixing device. Then, the constructor further fixes the two sections of the bridge through connecting pieces, thus completing the construction of the bridge.

[0004] During the above bridge construction process, it is necessary to use a positioning device to position the bridge before the temporary fixing device can be built. Moreover, the installation of the positioning device takes a certain amount of time, and in the case of a relatively harsh construction environment, the installation difficulty and the time required for installation of the positioning device will increase, resulting in more time-consuming bridge construction and low bridge construction efficiency. Summary of the Invention

[0005] In order to improve the construction efficiency of bridges, this application provides a fixing device and construction method for crossing an existing road.

[0006] In a first aspect, a fixing device for crossing an existing road provided by this application adopts the following technical solution:

[0007] A fixing device for crossing an existing road includes a first column vertically arranged under one of the bridges, a second column vertically arranged under the other bridge, a first steel beam horizontally arranged between the bridge and the first column, a second steel beam horizontally arranged between the bridge and the second column, a positioning assembly arranged on the first steel beam. The first steel beam is connected to the first column and the bridge close to itself. The second steel beam is slidably connected to the second column along its own length direction and is connected to the bridge close to itself; the positioning assembly is used to drive the first steel beam and the second steel beam to be directly opposite to each other.

[0008] By adopting the above technical solution, after the first column, the second column, the first steel beam, and the second steel beam are installed and the positioning component is activated, the positioning component drives the first steel beam and the second steel beam to be arranged opposite to each other, thereby making the two sections of the bridge opposite to each other. Moreover, the positioning component is preset on the first steel beam, which reduces the time required for installing the positioning component. And the positioning component is directly installed on the first steel beam, so that the setting of the positioning component does not need to consider the construction environment of the bridge, further reducing the time required for bridge construction, and thus improving the construction efficiency of the bridge.

[0009] Optionally, a positioning groove is formed on one side of the second steel beam close to the first steel beam, and the positioning groove is flared in the direction close to the first steel beam; the positioning component includes a cylinder and a positioning block fixedly arranged on the movable end of the cylinder. The cylinder is located between the first steel beam and the second steel beam, the fixed end of the cylinder is fixedly connected to the first steel beam, and the cylinder is used to drive the positioning block to approach and enter the positioning groove; one end of the positioning block close to the second steel beam is arranged in contact with the positioning groove, and when the positioning block is located at the bottom of the positioning groove, the side walls of the positioning block are in contact with the side walls of the positioning groove.

[0010] By adopting the above technical solution, the cylinder is activated to make the positioning block enter the positioning groove, and the second steel beam moves along its own length direction and drives one of the bridges to move. When the side walls of the positioning block are in complete contact with the side walls of the positioning groove, the first steel beam and the second steel beam are opposite to each other, so that the two sections of the bridge are also opposite to each other.

[0011] Optionally, support columns are fixedly arranged between the first steel beam and the bridge, and between the second steel beam and the bridge.

[0012] By adopting the above technical solution, after the first steel beam and the second steel beam are installed, the constructor selects support columns with appropriate sizes for installation according to the actual distances between the bridge and the first steel beam and the second steel beam, which is convenient for the connection between the bridge and the first steel beam and the second steel beam.

[0013] Optionally, a platform plate is fixedly arranged between the first column and the second column, and the platform plate is horizontally arranged.

[0014] By adopting the above technical solution, the setting of the platform plate provides an installation space for construction personnel, which is convenient for the connection between the fixing device and the bridge.

[0015] Optionally, two limit columns are fixedly arranged on the second steel beam, and the two limit columns are respectively located on both sides of the bridge and are both in contact with the bridge.

[0016] By adopting the above technical solution, the second steel beam can drive the bridge to move through the limit columns during the movement process, and after the bridge is positioned, the limit columns in contact with the bridge can play a further limiting and fixing role for the bridge.

[0017] Optionally, two positioning grooves are provided, and the two positioning grooves are respectively located at both ends of the second steel beam in the length direction; two positioning components are provided and correspond to the positioning grooves one by one.

[0018] By adopting the above technical solution, after the alignment of the bridge is completed, the two positioning blocks both enter the corresponding positioning grooves under the drive of the air cylinders, so that the two air cylinders in the extended state can play a protective role for the construction workers, reducing the risk of the construction workers falling from the platform board, thereby improving the practicability of the fixing device.

[0019] Optionally, a plurality of first connecting rods are fixedly arranged between the first upright post and the second upright post.

[0020] By adopting the above technical solution, the first upright post and the second upright post are connected by the first connecting rods, improving the stability of the fixing device.

[0021] In a second aspect, the present application provides a construction method for spanning an existing road, adopting the following technical solution:

[0022] A construction method for spanning an existing road includes the following steps:

[0023] Install the first upright post: Vertically arrange the first upright post under one of the bridges, and fixedly arrange the bottom end of the first upright post on the ground;

[0024] Install the second upright post: Vertically arrange the second upright post under the other bridge, and fixedly arrange the bottom end of the second upright post on the ground;

[0025] Install the first steel beam: Horizontally install the first steel beam on the top end of the first upright post, and connect the first steel beam with the bridge close to itself;

[0026] Install the second steel beam: Horizontally arrange the second steel beam on the top end of the second upright post, such that the second steel beam is slidably connected to the second upright post along its own length direction, and connect the second steel beam with the bridge close to itself;

[0027] Positioning and docking: Align the first steel beam with the second steel beam, and make the two bridge sections be aligned, and fixedly connect the two bridge sections through a connecting piece.

[0028] By adopting the above technical solution, during the alignment process of the first steel beam and the second steel beam, the constructor can fixedly connect the connecting piece with the bridge above the first steel beam. When the alignment of the first steel beam and the second steel beam is completed, at this time, the two bridge sections are also completed with alignment positioning. Then the constructor fixedly connects the connecting piece with the bridge above the second steel beam; in the traditional bridge construction process, it is necessary to sequentially complete bridge positioning, construction of the temporary fixing device, and connection of the connecting piece with the bridge, thereby further improving the construction efficiency of the bridge.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. By providing a positioning component, a second steel beam, and a second column, the positioning component drives the first steel beam and the second steel beam to be arranged opposite to each other, so that the two sections of the bridge are opposite to each other. Moreover, the positioning component is preset on the first steel beam, which reduces the time required for installing the positioning component. And since the positioning component is directly installed on the first steel beam, the setting of the positioning component does not need to consider the construction environment of the bridge, further reducing the time required for bridge construction, thereby improving the construction efficiency of the bridge;

[0031] 2. By providing a positioning component, when the side wall of the positioning block is in complete contact with the side wall of the positioning groove, the first steel beam and the second steel beam are opposite to each other, so that the two sections of the bridge are also opposite to each other. At the same time, the cylinder in the extended state can protect the construction workers on the platform plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic structural diagram of an embodiment of the present application;

[0033] Figure 2 is a cross-sectional view of an embodiment of the present application;

[0034] Figure 3 is Figure 2 a partial enlarged view of part A in

[0035] Description of the reference numerals: 0, first steel beam; 1, second steel beam; 11, positioning groove; 12, sliding groove; 13, limiting column; 14, support column; 2, first column; 3, second column; 4, platform plate; 5, first connecting rod; 51, first diagonal brace; 6, second connecting rod; 61, second diagonal brace; 7, positioning component; 71, cylinder; 72, positioning block; 8, bridge; 9, connecting piece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The following further describes the present application in detail Figures 1-3 with reference to the accompanying drawings.

[0037] An embodiment of the present application discloses a fixing device for crossing an existing road.

[0038] Referring to Figure 1 and Figure 2 , a fixing device for crossing an existing road, which is used to connect two sections of a bridge 8, includes a first steel beam 0 and a second steel beam 1 that are arranged below the bridge 8 and on the same horizontal plane. The first steel beam 0 is located directly below one of the bridges 8, and a first column 2 is fixedly arranged below the first steel beam 0; the second steel beam 1 is located directly below the other bridge 8, and a second column 3 is slidably arranged below the second steel beam 1; a positioning component 7 is arranged on the first steel beam 0, and the positioning component 7 is used to drive the first steel beam 0 and the second steel beam 1 to be arranged opposite to each other.

[0039] Referring to Figure 1 and Figure 3 ,the length directions of the first steel beam 0 and the second steel beam 1 are both the same as the width direction of the bridge 8, and the lengths of the first steel beam 0 and the second steel beam 1 are both greater than the width of the bridge 8; a plurality of first columns 2 and second columns 3 are arranged along the thickness direction of the bridge 8, and the first columns 2 and the second columns 3 correspond to each other one by one; a chute 12 is formed in the bottom surface of the second steel beam 1 along its own length direction, and the top ends of the second columns 3 are slidably arranged in the chute 12; two positioning grooves 11 are formed in one side of the second steel beam 1 close to the first steel beam 0, and the two positioning grooves 11 are respectively located at both ends of the second steel beam 1 in the length direction. The positioning grooves 11 are arranged in a flared shape along the direction close to the first steel beam 0, and the longitudinal section of the positioning grooves 11 is circular; two positioning assemblies 7 are provided and correspond to the positioning grooves 11 one by one. The positioning assembly 7 includes a cylinder 71 and a positioning block 72. The cylinder 71 is horizontally arranged between the first steel beam 0 and the second steel beam 1, and the length direction of the cylinder 71 is the same as the length direction of the bridge 8. The fixed end of the cylinder 71 is fixedly connected to the first steel beam 0, and the movable end of the cylinder 71 is fixedly connected to the positioning block 72; the positioning block 72 is located between the cylinder 71 and the second steel beam 1, and one end of the positioning block 72 close to the second steel beam 1 is attached to the inner wall of the positioning groove 11. When the positioning block 72 is located at the bottom of the corresponding positioning groove 11, the side walls of the positioning block 72 are in contact with the inner wall of the positioning groove 11.

[0040] Referring to Figure 1 and Figure 2 ,support columns 14 are vertically arranged between the first steel beam 0 and the bridge 8 close to it and between the second steel beam 1 and the bridge 8 close to it. The top surface of the support column 14 is in contact with the bottom surface of the bridge 8 close to it, and the support column 14 is bolted and fixed to the bridge 8, the first steel beam 0 and the second steel beam 1; two limit columns 13 are arranged on the second steel beam 1. The limit columns 13 are vertically arranged, and the two limit columns 13 are respectively located on both sides of the bridge 8 and are both in contact with the bridge 8.

[0041] Referring to Figure 1 and Figure 2, a platform plate 4 is horizontally arranged between the first upright post 2 and the second upright post 3. There is a distance between the platform plate 4 and the air cylinder 71. The platform plate 4 is bolted and fixed to both the first upright post 2 and the second upright post 3. A first connecting rod 5 is horizontally arranged between the corresponding first upright post 2 and the second upright post 3. A plurality of first connecting rods 5 are arranged in the vertical direction and are located below the platform plate 4. The length direction of the first connecting rod 5 is the same as the length direction of the air cylinder 71, and both ends of the first connecting rod 5 are bolted and fixed to the first upright post 2 and the second upright post 3 close to itself. Second connecting rods 6 are horizontally arranged between adjacent first upright posts 2 and between adjacent second upright posts 3. A plurality of second connecting rods 6 are arranged in the vertical direction, and the second connecting rods 6 are bolted and fixed to both the first upright post 2 and the second upright post 3. First diagonal braces 51 are fixedly arranged between adjacent first connecting rods 5 in the vertical direction and between the topmost first connecting rod 5 and the platform plate 4. Second diagonal braces 61 are fixedly arranged between adjacent second connecting rods 6 in the vertical direction and between the topmost second connecting rod 6 and the platform plate 4. Both the first diagonal brace 51 and the second diagonal brace 61 are inclined.

[0042] The implementation principle of a fixing device for crossing an existing road in an embodiment of the present application is as follows: After the first upright post 2, the second upright post 3, the first steel beam 0, and the second steel beam 1 are installed, the air cylinder 71 is started. The air cylinder 71 extends along its own length direction, so that the positioning block 72 enters the positioning groove 11, and the side wall of the positioning block 72 is in complete contact with the side wall of the positioning groove 11. At this time, the position of the positioning block 72 is fixed. At the same time, during the process of the positioning block 72 entering the positioning groove 11, the second steel beam 1 slides along its own length direction, so that the second steel beam 1 is arranged opposite to the first steel beam 0. And during the movement of the second steel beam 1, the bridge 8 close to itself is driven to move, so that the two sections of the bridge 8 are arranged opposite to each other.

[0043] The embodiment of the present application discloses a construction method for crossing an existing road.

[0044] A construction method for crossing an existing road includes the following steps:

[0045] Install the first upright post 2: Vertically arrange the first upright post 2 under one of the bridges 8, and fixedly arrange the bottom end of the first upright post 2 on the ground.

[0046] Install the second upright post 3: Vertically arrange the second upright post 3 under the other bridge 8, and fixedly arrange the bottom end of the second upright post 3 on the ground.

[0047] Install the first steel beam 0: Horizontally install the first steel beam 0 on the top end of the first upright post 2, and connect the first steel beam 0 with the bridge 8 close to itself.

[0048] Installation of the second steel beam 1: Horizontally arrange the second steel beam 1 on the top of the second column 3 so that the second steel beam 1 is slidably connected to the second column 3 along its own length direction, and connect the second steel beam 1 to the bridge 8 close to itself;

[0049] Positioning and docking: Align the first steel beam 0 with the second steel beam 1, and arrange the two sections of the bridge 8 opposite to each other, and bolt and fix the two sections of the bridge 8 through the connecting piece 9.

[0050] The above are all the preferred embodiments of this application. The protection scope of this application is not limited hereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A fixing device for spanning an existing road, used to connect two sections of a bridge (8), Characterized in that: It includes a first upright column (2) vertically arranged under one of the bridges (8), a second upright column (3) vertically arranged under the other bridge (8), a first steel beam (0) horizontally arranged between the bridge (8) and the first upright column (2), a second steel beam (1) horizontally arranged between the bridge (8) and the second upright column (3), a positioning component (7) arranged on the first steel beam (0). The first steel beam (0) is connected to the first upright column (2) and the bridge (8) close to it. The second steel beam (1) is slidably connected to the second upright column (3) along its own length direction and is connected to the bridge (8) close to it; the positioning component (7) is used to drive the first steel beam (0) and the second steel beam (1) to be arranged opposite to each other; A positioning groove (11) is opened on one side of the second steel beam (1) close to the first steel beam (0), and the positioning groove (11) is flared along the direction close to the first steel beam (0); the positioning component (7) includes a cylinder (71) and a positioning block (72) fixedly arranged on the movable end of the cylinder (71). The cylinder (71) is located between the first steel beam (0) and the second steel beam (1), and the fixed end of the cylinder (71) is fixedly connected to the first steel beam (0). The cylinder (71) is used to drive the positioning block (72) to approach and enter the positioning groove (11); one end of the positioning block (72) close to the second steel beam (1) is arranged in a fitting manner with the positioning groove (11), and when the positioning block (72) is located at the bottom of the positioning groove (11), the side walls of the positioning block (72) are in contact with the side walls of the positioning groove (11).

2. A fixing device for spanning an existing road according to claim 1, Characterized in that: Two positioning grooves (11) are opened, and the two positioning grooves (11) are respectively located at both ends of the second steel beam (1) in the length direction; two positioning components (7) are arranged and correspond to the positioning grooves (11) one by one.

3. A fixing device for spanning an existing road according to claim 1, Characterized in that: Support columns (14) are fixedly arranged between the first steel beam (0) and the bridge (8), and between the second steel beam (1) and the bridge (8).

4. A fixing device for spanning an existing road according to claim 1, Characterized in that: A platform plate (4) is fixedly arranged between the first upright column (2) and the second upright column (3), and the platform plate (4) is horizontally arranged.

5. A fixing device for spanning an existing road according to claim 4, Characterized in that: Two limit columns (13) are fixedly arranged on the second steel beam (1), and the two limit columns (13) are respectively located on both sides of the bridge (8) and are both in contact with the bridge (8).

6. A fixing device for spanning an existing road according to claim 1, Characterized in that: A number of first connecting rods (5) are fixedly arranged between the first upright column (2) and the second upright column (3).

7. A construction method for spanning an existing road, based on the fixing device according to any one of claims 1-6, Characterized in that, It includes the following steps: Install the first column (2): Vertically arrange the first column (2) under one of the bridges (8), and fixedly install the bottom end of the first column (2) on the ground; Install the second column (3): Vertically arrange the second column (3) under the other bridge (8), and fixedly install the bottom end of the second column (3) on the ground; Install the first steel beam (0): Horizontally install the first steel beam (0) on the top end of the first column (2), and connect the first steel beam (0) to the bridge (8) close to it; Install the second steel beam (1): Horizontally arrange the second steel beam (1) on the top end of the second column (3), such that the second steel beam (1) is slidably connected to the second column (3) along its own length direction, and connect the second steel beam (1) to the bridge (8) close to it; Positioning and docking: Align the first steel beam (0) with the second steel beam (1), and align the two sections of the bridge (8), and fixedly connect the two sections of the bridge (8) through the connecting member (9).

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