Large-diameter pipeline bridge-following laying structure

Abstract

The utility model discloses a large-diameter pipeline along-bridge laying structure, which belongs to the technical field of bridge structures, and comprises a bridge box girder, the bridge box girder is arranged on a bearing platform through a support, and a plurality of pile foundations are uniformly distributed at the lower end of the bearing platform; the two top plate overhanging sections are arranged on the left side and the right side of the upper end of the bridge box girder correspondingly; the two bottom plate overhanging sections are arranged on the left side and the right side of the lower end of the bridge box girder respectively, the top plate overhanging sections and the bottom plate overhanging sections extend outwards relative to the bridge box girder, the top plate overhanging sections, the bottom plate overhanging sections and the side face of the bridge box girder on the same side jointly define a containing groove, and the containing groove is used for laying large-diameter pipelines. The large-diameter pipeline is contained in the containing groove formed by the top plate overhanging section, the bottom plate overhanging section and the bridge box girder side wall, the large-diameter pipeline is laid in the lower-layer space of the box girder, the traveling crane and the pipeline arrangement space are separated, and safety is higher.

Description

Technical Field

[0001] This utility model relates to the field of bridge structure technology, and in particular to a structure for laying large-diameter pipelines along a bridge. Background Technology

[0002] Liquefied natural gas (LNG) has become an important part of international natural gas trade, and the development of its application technologies has promoted its widespread use globally. When LNG pipelines cross waterways, they need to be laid alongside bridges. Although these bridges often require specialized designs, they still need to allow passage for maintenance and operational vehicles. During LNG transportation, the low temperatures cause pipeline contraction and displacement stress, necessitating the installation of compensation platforms on the bridges to address this issue. These compensation platforms are typically 15-20 meters in length. A common practice for existing LNG pipeline bridge compensation platforms is to install compensation abutments every few piers and connect them to the existing bridge using a steel truss bridge. In sea-crossing bridges, the foundation investment constitutes a large proportion of the total cost. Using this method to construct separate bridge abutments in the sea presents significant engineering challenges and requires substantial investment. Utility Model Content

[0003] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a structure for laying large-diameter pipelines along bridges, which can realize low-cost laying of diameter pipelines along bridges and reduce the risks to pipelines caused by bridge traffic.

[0004] According to an embodiment of the present invention, a large-diameter pipeline laying structure along a bridge includes: a bridge box girder, which is mounted on a pier via supports, with multiple piles evenly distributed at the lower end of the pier; two cantilevered top slab sections, which are respectively located on the left and right sides of the upper end of the bridge box girder; and two cantilevered bottom slab sections, which are respectively located on the left and right sides of the lower end of the bridge box girder. Both the cantilevered top slab sections and the cantilevered bottom slab sections extend outward relative to the bridge box girder. The cantilevered top slab sections, the cantilevered bottom slab sections, and the side of the bridge box girder on the same side together form a receiving groove, which is used for laying large-diameter pipelines.

[0005] The large-diameter pipeline laying structure according to the present utility model has at least the following beneficial effects: the large-diameter pipeline is accommodated by the receiving groove formed by the cantilever section of the top plate, the cantilever section of the bottom plate and the side of the bridge box girder, and the large-diameter pipeline is laid in the lower space of the box girder, separating the traffic and pipeline layout space, which is safer.

[0006] According to some embodiments of this utility model, a railing is provided on the end of the cantilevered section of the bottom plate away from the bridge box girder.

[0007] According to some embodiments of this utility model, it also includes a compensation platform, which is formed by extending laterally from the pier cap. Multiple pile foundations are evenly distributed at the lower end of the compensation platform, and the compensation platform is used to accommodate the compensation section of a large-diameter pipeline.

[0008] According to some embodiments of the present invention, the compensation section is arranged in a U-shape on the compensation platform.

[0009] According to some embodiments of this utility model, multiple pads are provided between the compensation section and the compensation platform.

[0010] According to some embodiments of this utility model, the lateral extension length of the compensation platform is 15 to 20 meters.

[0011] According to some embodiments of this utility model, the cantilevered sections of the top and bottom slabs extend outwards by more than 3 meters relative to the bridge box girder.

[0012] According to some embodiments of this utility model, both the cantilevered top plate section and the cantilevered bottom plate section are provided with reinforcing ribs.

[0013] According to some embodiments of this utility model, a drainage system is provided on the cantilevered section of the base plate.

[0014] According to some embodiments of this utility model, an inspection passage is provided on the cantilevered section of the base plate.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the structure of the large-diameter pipeline laid along the bridge according to an embodiment of the present utility model;

[0018] Figure 2 This utility model embodiment presents a schematic diagram of the compensation platform in the large-diameter pipeline laying structure along the bridge.

[0019] Figure 3 yes Figure 2 Top sectional view.

[0020] Figure label:

[0021] Bridge box girder 100; bearing 110; pile cap 120; pile foundation 130; cantilevered top slab 140; cantilevered bottom slab 150; railing 151; receiving trough 160; compensation platform 170; pad block 180;

[0022] Large diameter pipeline 200; compensation section 210. Detailed Implementation

[0023] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the mechanism or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] refer to Figures 1 to 3 This invention describes a structure for laying large-diameter pipelines along a bridge according to an embodiment of the present invention.

[0027] like Figures 1 to 3 As shown, the large-diameter pipeline laying structure according to an embodiment of the present invention includes: a bridge box girder 100, which is mounted on a pier 120 via supports 110, and multiple piles 130 are evenly distributed at the lower end of the pier 120; two top slab cantilever sections 140, which are respectively located on the left and right sides of the upper end of the bridge box girder 100; and two bottom slab cantilever sections 150, which are respectively located on the left and right sides of the lower end of the bridge box girder 100. The top slab cantilever sections 140 and 150 extend outward relative to the bridge box girder 100. The top slab cantilever section 140, the bottom slab cantilever section 150, and the side of the bridge box girder 100 on the same side together form a receiving groove 160, which is used to lay the large-diameter pipeline 200.

[0028] like Figure 1As shown, the bridge box girder 100 is supported on the abutment 120 via supports 110. Multiple piles 130 are evenly distributed at the lower end of the abutment 120 to ensure the stability and load-bearing capacity of the bridge. The abutment 120 is designed with the special characteristics of the marine environment in mind, using corrosion-resistant materials and undergoing appropriate reinforcement. The bridge box girder 100 has a top cantilever section 140 and a bottom cantilever section 150 on both sides. These cantilever sections extend outward relative to the bridge box girder 100. The top cantilever section 140, the bottom cantilever section 150, and the side of the bridge box girder 100 together form a receiving groove 160 for laying large-diameter pipelines 200. Both the top cantilever section 140 and the bottom cantilever section 150 are equipped with reinforcing ribs to enhance structural stability. The outward extension length of these cantilever sections relative to the bridge box girder 100 is greater than 3 meters to provide sufficient space for pipeline inspection and maintenance. A railing 151 is installed at the end of the cantilever section 150 of the base plate away from the bridge box girder 100 to ensure the safety of maintenance personnel.

[0029] The large-diameter pipeline is laid along the bridge through a receiving groove 160 formed by the cantilevered section 140 of the top slab, the cantilevered section 150 of the bottom slab, and the side of the bridge box girder 100. The large-diameter pipeline 200 is laid using the space under the box girder, separating the traffic and pipeline layout spaces, thus improving safety.

[0030] like Figure 2 and Figure 3 As shown, the compensation platform 170 extends laterally from the foundation 120, with multiple piles 130 evenly distributed at its lower end to accommodate the compensation section 210 of the large-diameter pipeline 200. The lateral extension length of the compensation platform 170 is 15 to 20 meters to accommodate the compensation requirements of the large-diameter pipeline 200. The compensation section 210 is U-shaped on the compensation platform 170, and multiple pads 180 are provided between it and the compensation platform 170 to accommodate the thermal expansion and contraction of the pipeline.

[0031] A drainage system is installed on the cantilever section 150 of the base slab to prevent water accumulation from damaging the pipelines. Additionally, an access passage is provided on the cantilever section 150 of the base slab for pipeline maintenance and repair.

[0032] Based on the bridge design and pipeline laying requirements, the locations and dimensions of the bridge box girder 100, abutment 120, and pile foundation 130 are determined. A top slab cantilever section 140 and a bottom slab cantilever section 150 are designed and constructed on both sides of the bridge box girder 100, ensuring their outward extension lengths meet requirements and reinforced with ribs. A railing 151 is installed at one end of the bottom slab cantilever section 150 to ensure personnel safety. A compensation platform 170 is designed and constructed, ensuring its lateral extension length meets pipeline compensation needs, and a U-shaped compensation section 210 and pad blocks 180 are installed on the compensation platform 170. A drainage system is installed on the bottom slab cantilever section 150 to prevent water accumulation. An inspection passage is provided on the bottom slab cantilever section 150 to facilitate pipeline maintenance and repair.

[0033] Therefore, this large-diameter pipeline is laid using the space beneath the bridge box girder 100, and the pier cap 120 is enlarged at the location of the compensation platform 170 to provide space for pipeline compensation. Although the pipeline compensation structure has a large area, its weight is not significant, resulting in lower construction costs. Furthermore, the pipeline compensation structure and bridge traffic are not on the same plane, reducing the risks to the pipeline caused by bridge traffic. Fully utilizing the bridge space not only reduces the bridge deck area but also reduces the cost of separately installing compensation piers, saving on project costs. Compared to conventional compensation devices installed on the steel truss between the pier and the compensation pier cap 120, this solution facilitates easier inspection and maintenance.

[0034] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A structure for laying large-diameter pipelines along a bridge, characterized in that, include: A bridge box girder (100) is mounted on a pier (120) via a support (110), and multiple piles (130) are evenly distributed at the lower end of the pier (120). Two cantilevered sections (140) of the top slab are respectively located on the left and right sides of the upper end of the bridge box girder (100); Two bottom plate cantilever sections (150) are respectively located on the left and right sides of the lower end of the bridge box girder (100). The top plate cantilever section (140) and the bottom plate cantilever section (150) both extend outward relative to the bridge box girder (100). The top plate cantilever section (140), the bottom plate cantilever section (150) and the side of the bridge box girder (100) on the same side together form a receiving groove (160), which is used to lay large-diameter pipelines (200).

2. The large-diameter pipeline laying structure according to claim 1, characterized in that, A railing (151) is provided on the end of the cantilever section (150) of the base plate away from the bridge box girder (100).

3. The large-diameter pipeline laying structure according to claim 1, characterized in that, It also includes a compensation platform (170), which is formed by the pier (120) extending laterally. Multiple piles (130) are evenly distributed at the lower end of the compensation platform (170). The compensation platform (170) is used to accommodate the compensation section (210) of the large-diameter pipeline (200).

4. The large-diameter pipeline laying structure according to claim 3, characterized in that, The compensation section (210) is arranged in a U-shape on the compensation platform (170).

5. The large-diameter pipeline laying structure according to claim 4, characterized in that, Multiple pads (180) are provided between the compensation section (210) and the compensation platform (170).

6. The large-diameter pipeline laying structure according to claim 3, characterized in that, The compensation platform (170) extends laterally for a length of 15 to 20 meters.

7. The large-diameter pipeline laying structure according to claim 1, characterized in that, The cantilevered section of the top slab (140) and the cantilevered section of the bottom slab (150) extend outwards by more than 3 meters relative to the bridge box girder (100).

8. The large-diameter pipeline laying structure according to claim 1, characterized in that, Both the cantilevered section of the top plate (140) and the cantilevered section of the bottom plate (150) are provided with reinforcing ribs.

9. The large-diameter pipeline laying structure according to claim 1, characterized in that, A drainage system is provided on the cantilever section (150) of the base plate.

10. The large-diameter pipeline laying structure according to claim 1, characterized in that, An inspection passage is provided on the cantilever section (150) of the base plate.

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