WO2023279548A1

WO2023279548A1 - Method and system for mounting large steel bridge

Info

Publication number: WO2023279548A1
Application number: PCT/CN2021/121172
Authority: WO
Inventors: 沈玉宝; 冯腊初; 向如兵; 宗翠荣; 王永田; 李辉; 伦灿章; 罗传正; 钱诚胜; 贾攀攀; 杨蓉
Original assignee: 上海振华重工(集团)股份有限公司
Priority date: 2021-07-09
Filing date: 2021-09-28
Publication date: 2023-01-12
Also published as: CN113356079A

Abstract

A method and system for mounting a large steel bridge, for use in mounting a large steel bridge (120) on piers (130) by means of a transport ship (110), a three-dimensional jack (140) being provided on each of the piers (130). The method comprises: the finally assembled large steel bridge (120) is slid to the transport ship (110) by means of sliding supporting frames (150), the large steel bridge (120) is bound on the sliding supporting frames (150), and the sliding supporting frames (150) can bear load caused by self-weight during shipment and acceleration during marine transportation; after the transport ship (110) reaches a specified mounting position, an anchor is dropped for positioning, and ballasting is performed by using a ballasting system, such that the bridge bottom surface of the large steel bridge (120) is in contact with the three-dimensional jacks (140) on the piers (130); the large steel bridge (120) is supported by the three-dimensional jacks (140); after the height of the transport ship (110) between the bridge bottom surface of the large steel bridge (120) and the sliding supporting frames (150) reaches a safe height, the transport ship moves out of the specified mounting position, so as to complete mounting. According to the system, the final assembly of the large steel bridge is completed before mounting, and the jacks are used for mounting, such that construction difficulty is reduced.

Description

Method and system for large steel bridge installation

This application claims the priority of the Chinese patent application with application number 202110779641.1 and titled "A Method and System for Large Steel Bridge Installation" submitted on July 9, 2021, the entire contents of which are incorporated in this application by reference.

technical field

The invention relates to the technical field of integral transportation and float-over installation of steel bridges, in particular to a method and system for installing large-scale steel bridges.

Background technique

The current installation methods for steel bridges are mainly on-site segmental hoisting of bridge deck cranes or large-scale segmental hoisting using large-scale equipment such as floating cranes. After hoisting, on-site welding or riveting is used to assemble multiple segments into a whole. The performance is poor, and it is not conducive to the installation of related accessories. When the overall installation method is used, floating cranes are generally used for installation in China. Commonly used floating cranes have weak load-bearing capacity and generally require multiple devices to be installed together, which increases the construction cost.

Contents of the invention

In view of this, the present invention provides a method and system for installing a large steel bridge, which can install the large steel bridge through a three-dimensional jack after the assembly is completed, reducing engineering difficulty and cost.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

The method for installing a large steel bridge according to an embodiment of the present invention is used to install a large steel bridge on a pier by a transport ship, and a three-dimensional jack is provided on the pier, including:

Bind the completed large steel bridge on the sliding support frame as a whole, and slide it to the transport ship through the sliding support frame, and fix the sliding support frame on the large steel bridge. The sliding support frame can withstand self-weight and the load caused by sea acceleration during transportation;

The transport ship transports the large steel bridge to the designated installation location, anchors for positioning, and uses the ballast system for ballasting, so that the bottom surface of the large steel bridge is in contact with the three-dimensional jack on the pier;

The three-dimensional jack supports the large steel bridge;

After the height between the bottom surface of the large steel bridge and the sliding support frame reaches a safe height, the transport ship moves out of the designated installation position to complete the installation.

Further, the transport ship transports the large steel bridge to the designated installation location, anchors it through the windlass, and uses the ballast system for ballasting, so that the bottom surface of the large steel bridge is in contact with the three-dimensional jack on the pier, including:

Determine the installation height according to the actual height required by the large steel bridge on site;

Determine the total load that the transport ship can bear after loading the large steel bridge;

Calculate the positioning position and the ballast required by the ballast system based on the height and total load, the anchor windlass is positioned according to the positioning position, and the ballast system provides the required ballast to make the three-dimensional jack contact.

Further, when the bottom surface of the large steel bridge is in contact with the three-dimensional jack on the pier, the large steel bridge is untied from the sliding support frame.

Furthermore, specify the installation location as a direction away from the short axis of the pier.

The embodiment of the present invention also provides a system for installing a large steel bridge, which is used to install a large steel bridge on a bridge pier, including:

The transport ship is used to transport the large steel bridge to the designated installation location;

Sliding support frame, the sliding support frame is used to slide the large steel bridge onto the transport ship and fix the large steel bridge on the transport ship;

Windlass, the windlass is set on the transport ship, and is used for anchoring and positioning when the transport ship transports the large steel bridge to the designated installation location;

Ballasting devices, ballasting devices are used to ballast transport ships to lower the deck of large steel bridges;

Three-dimensional jack, the three-dimensional jack is used to lower the bottom surface of the large steel bridge and contact it to carry the large steel bridge.

Further, the ballast device is used to: calculate the ballast to be provided to the transport ship according to the installation height and the total load that the transport ship can bear after loading the large steel bridge, and provide the ballast.

Further, there are multiple sliding support frames.

Further, the sliding support frame is slidingly connected with the transport ship through rails.

The technical solution of the present invention has at least one of the following beneficial effects:

1. According to the method of the embodiment of the present invention, the final assembly is completed before the large steel bridge arrives at the installation location, which effectively improves the integrity of the product, effectively shortens the construction time, and optimizes the construction process;

2. The method of the embodiment of the present invention uses a three-dimensional jack to support a large steel bridge for installation, which effectively reduces the construction cost.

Description of drawings

Fig. 1 is the installation schematic diagram of the large-scale steel bridge installation system of the embodiment of the present invention;

Fig. 2 is the flow chart of the method for the large-scale steel bridge installation of the embodiment of the present invention;

Fig. 3 is the schematic diagram of the overall skid loading of large steel bridges according to the embodiment of the present invention;

Fig. 4 is a schematic diagram of a transport ship anchored in an embodiment of the present invention;

Fig. 5 is a schematic diagram of the installation state of the three-dimensional jack according to the embodiment of the present invention;

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention belong to the protection scope of the present invention.

Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by those skilled in the art to which the present invention belongs. "First", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Likewise, words like "a" or "one" do not denote a limitation in quantity, but indicate that there is at least one. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "Down", "Left", "Right" and so on are only used to indicate the relative positional relationship. When the absolute position of the described object changes, the relative positional relationship also changes accordingly.

With reference to Fig. 1, Fig. 1 is the installation schematic diagram of the large-scale steel bridge installation system of the embodiment of the present invention, as shown in Fig. A three-dimensional jack 140 is provided on the pier 130 of the three-dimensional jack 140 and the sliding support frame 150 .

Bind the completed large steel bridge 120 on the sliding support frame 150, slide the sliding support frame 150 from land to the transport ship 110, and bind the sliding support frame 150 on the transport ship 110, In order to finish fixing the complete large-scale steel bridge 120 on the transport ship 110, after the transport ship 110 transports the large-scale to the designated installation site, the installation position is determined by anchoring, and the ballast system is used for ballasting, so that the large-scale steel bridge 120 The bottom surface is in contact with the three-dimensional jack 140 . After the three-dimensional jack 140 lifts the large steel bridge 120, there will be a gap between the large steel bridge 120 and the sliding support frame 150, and the transport ship 110 will move out after the gap between the bottom surface of the large steel bridge 120 and the sliding support frame 150 reaches a safe height. Specify the installation location and complete the installation. Therefore, the structural integrity of the large steel bridge 120 is effectively ensured by performing final assembly on land and transporting it using the transport ship 110 . At the same time, it also effectively reduces the construction time. In addition, the final position of the large steel bridge 120 is finely adjusted through the three-dimensional jack 140. The three-dimensional jack 140 has a high load-bearing range and low cost, which effectively saves engineering expenses while meeting construction requirements.

A method for installing a large steel bridge according to an embodiment of the present invention will be specifically described below with reference to FIG. 2 .

According to the flowchart of the method for installing a large steel bridge, the flowchart includes S210-S240. It is used to install large steel bridges on piers with three-dimensional jacks on the piers by transport ships, including:

S210, sliding the completed large-scale steel bridge onto the transport ship through the sliding support as a whole.

According to an embodiment of the present application, as shown in FIG. 3 , FIG. 3 is a schematic diagram of a large-scale steel bridge overall slipping and shipping according to an embodiment of the present invention, including: a large-scale steel bridge 310 , a transport ship 320 and a sliding support frame 330 .

Before the large steel bridge 310 is shipped, it is necessary to make corresponding sliding brackets according to the installation height of the large steel bridge 310 on the installation site to slide the large steel bridge 310 from the land to the transport ship 320, and tie the large steel bridge 310 on the slide. Move on the support frame 330.

The transport ship 320 may be a semi-submersible barge. The semi-submersible barge has a relatively deep draft, so it is not easily affected by wind and waves, and can smoothly transport the large steel bridge 310 to the designated installation site. At the same time, due to the deep draft, it can also be precisely fine-tuned when the large steel bridge 310 is ballasted and installed. In addition, the sliding support frame 330 can support the bottom surface and the arch of the large steel bridge 310 respectively by means of multi-point multi-platform support. As a result, it can stably bear the load caused by the bridge's own weight and the acceleration during transportation, ensuring transportation safety.

S220, the transport ship transports the large steel bridge to a designated installation location so that the bottom surface of the large steel bridge is in contact with the three-dimensional jack.

Specifically, after the transport ship transports the large steel bridge to the designated installation location, it anchors for positioning and uses a ballast system for ballasting, so that the bottom surface of the large steel bridge is in contact with the three-dimensional jack.

According to the first embodiment of the present application, as shown in FIG. 4 , FIG. 4 is a schematic diagram of a transport ship anchored and parked according to the embodiment of the present invention, including a transport ship 410 and a pier 420 . After the transport ship 410 arrives at the designated installation site, it needs to enter the designated installation position for installation. After the transport ship 410 translates into the designated position, it passes through several symmetrical anchor positions, so that the transport ship 410 is stably moored at the designated installation position. This ensures the accuracy of the installation. Wherein, the specified installation position is a direction away from the short axis of the bridge pier 420 .

In addition, the transport ship 410 can calculate the ballast according to the installation height on site and the total load that can be borne after the large steel bridge is loaded, so as to start the ballast system to provide appropriate ballast and increase the draft of the transport ship 410, wherein the ballast system consists of The water tank is composed, and the draft can be adjusted by filling or emptying the water tank. Therefore, by adjusting the ballast, the draught of the transport ship can be increased so that the bottom surface of the large steel bridge is gently in contact with the three-dimensional jack, and after the bottom surface of the large steel bridge is in contact with the three-dimensional jack, the large steel bridge can be brought into contact with the sliding The support frame is untied. In addition, as shown in FIG. 5 , FIG. 5 is a schematic diagram of an installation state of a three-dimensional jack according to an embodiment of the present invention, including: a three-dimensional jack 510 and a bridge pier 520 . The three-dimensional jack is installed on the long axis of the pier along the direction of its own long side.

S230, the three-dimensional jack supports the large steel bridge.

S240, the transport ship moves out of the designated installation position after the bottom surface of the large steel bridge and the sliding support frame reach a safe height.

Specifically, after the transport ship lifts the large steel bridge with the three-dimensional jack, there is a gap between the large steel bridge and the sliding support frame. When the gap height reaches a safe height, the transport ship can move out of the installation position and complete the installation.

The embodiment of the present invention also provides a system for installing a large steel bridge, as shown in Figure 1, for installing a large steel bridge on a bridge pier, including:

Transport ship 110, the transport ship 110 is used to transport the large steel bridge to the designated installation location;

The sliding support frame 150, the sliding support frame 150 is used to slide the large steel bridge onto the transport ship 110 and fix the large steel bridge on the transport ship 110;

A windlass (not shown in the figure), the windlass is arranged on the transport ship 110, and is used for anchoring and positioning when the transport ship 110 transports the large steel bridge to the designated installation location;

Ballasting device (not shown in the figure), the ballasting device is used for ballasting the transport ship 110, so that the bottom surface of the large steel bridge is lowered;

The three-dimensional jack 140, the three-dimensional jack 140 is used to lower the bottom surface of the large steel bridge and contact it to carry the large steel bridge.

In one embodiment of the present invention, the ballast device is used to: calculate the ballast that needs to be provided to the transport ship 110 according to the height of the installation and the total load that the transport ship 110 can bear after loading the large steel bridge, and provide the ballast load.

In one embodiment of the present invention, there may be multiple sliding support frames 150 .

Further, the sliding support frame 150 is slidingly connected with the transport ship 110 through rails.

The working process and functions of each device in the system of the embodiment of the present invention have been described in detail in the above embodiment, for details, please refer to the description in the method in FIG. 2 of the above embodiment, and will not be repeated here.

The above description is a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims

A method for installing a large steel bridge is characterized in that it is used to install the large steel bridge on a pier by a transport ship, and the pier is provided with a three-dimensional jack, including:

Binding the completed large steel bridge to the sliding support frame as a whole, sliding to the transport ship through the sliding support frame, fixing the sliding support frame on the large steel bridge, and The above-mentioned sliding support frame can withstand the load caused by the self-weight of the ship and the acceleration of the sea during transportation;

The transport ship transports the large steel bridge to the designated installation location, anchors for positioning, and uses a ballast system to perform ballasting, so that the bottom surface of the large steel bridge is in contact with the three-dimensional jack on the pier;

The three-dimensional jack supports the large steel bridge;

The transport ship moves out of the designated installation position after the height between the bottom surface of the large steel bridge and the sliding support frame reaches a safe height, and the installation is completed.
The method according to claim 1, characterized in that, the transport ship transports the large steel bridge to a designated installation location, anchors for positioning, and uses a ballast system to perform ballasting, so that the bottom surface of the large steel bridge is in contact with the The three-dimensional jack contact on the pier includes:

Determine the installation height according to the actual height required by the large steel bridge described on site;

Determine the total load that the transport ship can bear after loading the large steel bridge;

Calculate the positioning position and the ballast required to be provided by the ballast system based on the height and the total load, the windlass is positioned according to the positioning position, and the ballast system provides the required ballast, so that the The bottom surface of the large steel bridge is in contact with the three-dimensional jack on the pier.
The method according to claim 1, characterized in that, when the bottom surface of the large steel bridge is in contact with the three-dimensional jack on the pier, the large steel bridge is untied from the sliding support frame.
The method according to claim 3, wherein the specified installation position is in a direction away from the short axis of the bridge pier.
A system for installing a large steel bridge is characterized in that it is used to install the large steel bridge on a pier, including:

a transport ship, the transport ship is used to transport the large steel bridge to a designated installation location;

a sliding support frame, the sliding support frame is used to slide the large steel bridge onto the transport ship and fix the large steel bridge on the transport ship;

a windlass, the windlass is arranged on the transport ship, and is used for anchoring and positioning when the transport ship transports the large steel bridge to the designated installation location;

a ballast device, the ballast device is used for ballasting the transport ship, so that the bottom surface of the large steel bridge is lowered;

A three-dimensional jack, the three-dimensional jack is used to lower and contact the bottom surface of the large steel bridge to bear the large steel bridge.
The system of claim 5, wherein the ballast device is configured to:

According to the installation height and the total load that the transport ship can bear after loading the large steel bridge, calculate the ballast that needs to be provided to the transport ship, and provide the ballast.
The system according to claim 5, wherein there are multiple sliding support frames.
The system according to claim 5, wherein the sliding support frame is slidingly connected to the transport ship through rails.