A device for loading and unloading a bridge in the middle of a pressure pipeline laid by a bridge-mounted bridge-laying vehicle

Abstract

The utility model relates to a kind of midway up and down bridge device of pressure pipeline laid by vehicle-mounted bridge, including shaft mechanism and temperature compensator;The shaft mechanism is arranged at the turning of pressure pipeline up and down bridge;Pipeline is changed by the up and down bridge shaft mechanism from laying along bridge to trench, public pipe gallery or direct-buried laying, realize the relative independence of pipeline line and bridge line;Temperature compensator is arranged between the shaft mechanism and the upper structure of bridge.The utility model sets up shaft mechanism at up and down bridge according to the requirement of pipeline, realizes the relative flexibility of pipeline laying;And the turning of pressure pipeline will not generate greater horizontal force to bridge structure, will not generate greater influence to bridge structure, can guarantee the safety of pipeline and bridge.

Description

Technical Field

[0001] This utility model relates to the field of pressure pipeline laying along bridges, and in particular to a device for mid-way bridge entry and exit of pressure pipelines laid along vehicle-mounted bridges. Background Technology

[0002] Due to the scarcity of urban land resources and the high costs of land acquisition or demolition, it is difficult to guarantee independent land use for pressure pipelines and bridges. Because the construction and operation and maintenance units of bridges and pipelines are different, and the approval processes and implementation processes vary, bridge structures and pipelines tend to be planned, designed, constructed, and operated and maintained independently.

[0003] Bridge and pipeline structures each have mature structural forms, and a composite structure cannot be achieved through simple combination. While independently implementing pipeline and bridge projects offers convenience in approval and implementation, it also presents challenges such as difficulty in securing construction land, high construction costs, long construction periods, and poor operation and maintenance conditions. The method of laying pressure pipelines along with bridges, however, addresses these issues to some extent.

[0004] When a bridge is long and the pipeline route differs from the bridge's, there are limitations to laying pipelines along the bridge. Therefore, it is necessary to address the issue of pipelines entering and exiting the bridge midway. When the pipeline is long, multiple temperature compensation devices exist along the bridge, and significant blind plate forces exist when the pipeline turns at bridge entrances and exits, which is very detrimental to the stress on the bridge structure. Against this backdrop, a solution for pressure pipelines entering and exiting bridges midway is urgently needed. Summary of the Invention

[0005] To address the aforementioned problems, the purpose of this utility model is to provide a mid-course on / off device for laying pressure pipelines on a vehicle-mounted bridge.

[0006] The technical solution adopted in this utility model is as follows:

[0007] The present invention proposes a mid-course bridge-entry / exit device for laying pressure pipelines along a vehicle-mounted bridge, comprising a shaft mechanism and a temperature compensator; the shaft mechanism is located at the turning point of the pressure pipeline at the bridge-entry / exit point; the pipeline is transformed from being laid along the bridge to being laid in a pipe trench, public pipe gallery or direct burial through the bridge-entry / exit shaft mechanism, realizing the relative independence of the pipeline route from the bridge route; a temperature compensator is provided between the shaft mechanism and the superstructure of the bridge.

[0008] Furthermore, a main fixed support is provided between the bend of the pressure pipeline and the vertical shaft.

[0009] Furthermore, the shaft structure is a steel structure or a concrete structure.

[0010] Furthermore, the shaft structure includes a shaft foundation, a shaft bottom plate, and steel structure columns; the shaft bottom plate is located on top of the shaft foundation; and the steel structure columns are correspondingly located around the upper surface of the shaft bottom plate.

[0011] Furthermore, diagonal bracing or shear walls are provided between the steel structure columns.

[0012] Furthermore, a maintenance passage is provided between the bottom plate of the shaft and the platform on the upper part of the bridge where the pipeline is laid.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. When the pressure pipeline road overlaps with a section of an urban elevated bridge or cross-sea bridge, the pipeline can be laid within the boundary of the bridge construction land in the overlapping section.

[0015] 2. A compensation device is installed between the vertical shaft structure and the section laid along the bridge. The blind plate force of the main fixed support at the bend of the pressure pipeline is borne by the vertical shaft to avoid causing a major impact on the bridge structure.

[0016] 3. Provide an easily accessible maintenance passage inside the shaft, allowing convenient access to the pipeline platform laid along the bridge from the shaft structure, which helps reduce maintenance costs and improve the safe operation of both the pipeline and the bridge. Attached Figure Description

[0017] Figure 1 This is a schematic diagram showing the relative position of this utility model and the bridge;

[0018] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal operation and maintenance passage of the vertical shaft mechanism.

[0020] The attached diagram is labeled as follows: 1-Shaft foundation; 2-Shaft bottom plate; 3-Steel structure column; 4-Diagonal brace; 5-Horizontal beam; 6-Main fixed support; 7-Temperature compensator; 8-Pressure pipeline; 9-Maintenance access. Detailed Implementation

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] This utility model proposes a mid-course on / off device for laying pressure pipelines on a vehicle-mounted bridge, such as... Figures 1-2As shown, it includes a shaft mechanism and a temperature compensator 7; the shaft mechanism is set at the bend of the pressure pipeline 8 on the upper and lower bridges; the pressure pipeline 8 is changed from being laid along the bridge to being laid in a pipe trench, public pipe gallery or direct burial through the shaft mechanism on the upper and lower bridges, so as to realize the relative independence of the pipeline line and the bridge line; a temperature compensator 7 is installed between the shaft mechanism and the superstructure of the bridge to adapt to the different deformation degrees between the two.

[0023] Pressure pipeline 8 is laid along the bridge, utilizing the spanning capacity of the bridge structure and the space inside the main beam structure or between adjacent main beam structures to lay pipelines; the method of laying pipelines along the bridge saves construction land, shares structures, saves a lot of construction and installation costs, and can provide a good operation and maintenance platform for pipelines.

[0024] The shaft structure adopts a steel or concrete structure with a large horizontal load-bearing capacity; specifically, the shaft structure includes a shaft foundation 1, a shaft bottom plate 2, and steel structure columns 3; the shaft bottom plate 2 is fixedly installed on the top of the shaft foundation 1; the steel structure columns 3 are correspondingly fixedly installed around the upper surface of the shaft bottom plate 2.

[0025] To improve horizontal load-bearing capacity and rigidity, in addition to robust beam-column structures and joint constructions, diagonal bracing or shear walls are also employed. When the shaft structure is a steel structure, the steel columns 3 are connected by steel diagonal bracing 4, steel beams 5, etc.; when the shaft structure is a concrete structure, the steel columns 3 are connected by shear walls.

[0026] like Figure 3 As shown, a maintenance passage 9 is provided between the bottom plate 2 of the shaft and the platform on the upper part of the bridge where the pipeline is laid. The maintenance passage 9 is equipped with structures such as stairs and platforms, so that pipeline maintenance personnel can conveniently carry out daily maintenance management and repair operations on the pipelines in the shaft and laid with the bridge without the need for special equipment and without affecting traffic on and under the bridge, thus ensuring the safe operation of both the bridge structure and the pressure pipeline.

[0027] In this embodiment, a main fixed support 6 is provided between the bend of the pressure pipeline 8 and the shaft mechanism. Since the design pressure of heating or water supply pipelines can reach up to 1.6 MPa, when the pipe diameter is large, each pipeline at the bend at the bridge access point experiences a blind flange force of hundreds or even thousands of kilonewtons. At this point, the blind flange force at the pipeline bend far exceeds the horizontal forces such as the braking force of a car and the friction of the support during bridge design. The substructure and foundation of the bridge cannot withstand the blind flange force at the bridge access points of the pressure pipeline. Therefore, this invention places the main fixed support 6 near the bend of the pressure pipeline inside the shaft mechanism, and the blind flange force at the bend of the pressure pipeline 8 is borne by the shaft mechanism. This avoids excessive horizontal forces exceeding the horizontal bearing capacity of the bridge structure.

[0028] All matters not detailed in this utility model are common knowledge.

[0029] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A device for intermediate access to and from a vehicle-mounted bridge for laying pressure pipelines on a traveling bridge, characterized in that: The device includes a shaft mechanism and a temperature compensator; the shaft mechanism is located at the bend of the pressure pipeline on the bridge; the pipeline is transformed from being laid along the bridge to being laid in a pipe trench, public pipe gallery or direct burial through the shaft mechanism, so as to realize the relative independence of the pipeline line and the bridge line; a temperature compensator is installed between the shaft mechanism and the superstructure of the bridge.

2. The mid-span bridge-lowering device for laying a pressure pipeline behind a bridge- carrying vehicle according to claim 1, characterized in that: A main fixed support is installed between the bend of the pressure pipeline and the vertical shaft.

3. The mid-span bridge-lowering device for laying a pressure pipeline behind a bridge- carrying vehicle according to claim 1, characterized in that: The shaft structure is a steel or concrete structure.

4. The mid-span bridge-lowering device for laying a pressure pipeline behind a bridge- carrying vehicle according to claim 3, characterized in that: The shaft structure includes a shaft foundation, a shaft bottom plate, and steel structure columns; the shaft bottom plate is located on top of the shaft foundation; the steel structure columns are correspondingly located around the upper surface of the shaft bottom plate.

5. The mid-span bridge device for laying pressure pipelines with a vehicle-mounted bridge according to claim 4, characterized in that: The steel structure columns are provided with diagonal bracing or shear walls.

6. The mid-span bridge device for laying pressure pipeline with vehicle-mounted bridge according to claim 4, characterized in that: A maintenance access channel is provided between the bottom plate of the shaft and the platform on the upper part of the bridge where the pipeline is laid.

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