Pipeline bridge

Abstract

The invention relates to the technical field of pipeline bridges, and provides a pipeline bridge which comprises a bridge base. The beam body is arranged on the bridge seat, the beam body comprises a plurality of main truss groups and inter-group supporting frames II, and each main truss group comprises a plurality of truss beams arranged side by side and intra-group supporting frames I; the bridge floor cross beams are arranged on the beam body and connected with the trussed beams arranged side by side through U-shaped bolt sets; the pipeline support is arranged on the bridge floor cross beam and used for supporting and fixing a pipeline, and the height of the pipeline support relative to the bridge floor cross beam is adjustable. By arranging the height-adjustable pipeline support, the requirement for pipeline application rigidity is met, so that the advantages of an assembly type bridge in the aspect of construction are brought into full play, construction of the pipeline bridge can be rapidly completed, and the construction cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline bridges, and in particular to a pipeline bridge. Background Art

[0002] In related technologies, various pipelines (gas pipes, water pipes, oil pipes) inevitably need to cross gullies, lakes, mountain streams, and canyons. However, these pipelines have low rigidity, and only by adding more dense supporting fixed brackets can they meet the higher application rigidity required for their operation. Prefabricated steel bridges have the advantage of high construction efficiency, but due to their connection methods and structural characteristics, they are difficult to meet the use requirements of pipeline bridges with high rigidity requirements.

[0003] Therefore, how to overcome the above-mentioned technical defects has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] The embodiment of the present invention provides a pipeline bridge, which aims to at least solve the technical problem that the assembled steel bridge in the prior art or related art is difficult to meet the use requirements of pipeline bridges with high rigidity requirements due to its connection method and structural characteristics. The pipeline bridge includes: a bridge seat; a beam body, the beam body is arranged on the bridge seat, the beam body includes multiple groups of main truss groups and inter-group support frames II, the main truss groups include multiple truss beams arranged side by side and intra-group support frames I; a bridge deck crossbeam, which is arranged on the beam body, and the bridge deck crossbeam is respectively connected to the truss beams arranged side by side through a U-bolt group; a pipeline support, which is arranged on the bridge deck crossbeam, and the pipeline support is used to support and fix the pipeline, and the height of the pipeline support relative to the bridge deck crossbeam is adjustable.

[0005] In addition, the pipeline bridge in the above technical solution provided by this application may also have the following additional technical features:

[0006] In some technical solutions, optionally, the truss beam includes a plurality of trusses connected in series by a truss pin group, the truss includes an upper chord and a lower chord; the beam body further includes: a reinforcing chord, which is arranged outside the upper chord and the lower chord, and the reinforcing chord is connected to the upper chord and the lower chord through a chord bolt group. The reinforcing chords are also connected in series by a truss pin group.

[0007] In some technical solutions, optionally, the truss includes a male head end vertical rod, and the support frame I in the group is used to connect the male head end vertical rods and the lower chord rods of the corresponding two trusses.

[0008] In some technical solutions, optionally, the truss beam further includes a male end column and a female end column, and the main truss group further includes: a connecting beam located at both ends of the main truss group, for connecting two male end columns and female end columns arranged side by side.

[0009] In some technical solutions, optionally, the truss further includes a female end vertical rod, and the inter-group support frame II is used to connect the female end vertical rods of the corresponding two trusses.

[0010] In some technical solutions, optionally, the beam body also includes: a crossbeam, which is arranged in the truss and is fastened to the truss by a clamp.

[0011] In some technical solutions, optionally, the pipeline bridge further includes: a distribution beam, which is arranged above the bridge seat and hinged to the bridge seat, and the distribution beam abuts against the bottom surface of the truss structure.

[0012] In some technical solutions, optionally, the pipeline support includes: a base, which is arranged on the bridge deck beam; and a pipeline support body, which is connected to the base through an adjusting screw.

[0013] In some technical solutions, optionally, the pipe support further includes: a pipe clamp bolted to the pipe support body, and the pipe clamp is used to clamp the pipe.

[0014] In some technical solutions, optionally, the pipeline bridge also includes: a foundation, with a bridge seat arranged on the foundation; a bridge deck, arranged on a bridge deck crossbeam; and a plurality of guardrails, with the plurality of guardrails arranged on the bridge deck crossbeam.

[0015] The beneficial effects brought by the present invention are as follows:

[0016] It can be seen from the above scheme that an embodiment of the present invention provides a pipeline bridge, which is an upper-supported assembled pipeline bridge. By arranging a height-adjustable pipeline support, the rigidity requirements of pipeline applications are met, thereby giving full play to the advantages of assembled bridges in construction, and being able to quickly complete the construction of the pipeline bridge, thereby reducing construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a pipeline bridge having a simply supported single-layer reinforced beam structure according to a first embodiment of the present invention;

[0018] Figure 2 express Figure 1 A schematic cross-sectional view of the pipeline bridge of the first embodiment is shown;

[0019] Figure 3 A schematic diagram showing the structure of a single-layer reinforced beam of a pipeline bridge according to the first embodiment of the present invention;

[0020] Figure 4 express Figure 3 A schematic cross-sectional view of a single-layer reinforced beam structure of a pipeline bridge according to the first embodiment is shown;

[0021] Figure 5 A schematic cross-sectional view of a span-end pipeline support structure of a pipeline bridge in a transverse direction of the bridge is shown in an embodiment of the present invention;

[0022] Figure 6 A schematic elevational view of a pipe support structure at a span end of a pipe bridge in the direction of the bridge is shown in an embodiment of the present invention;

[0023] Figure 7 A schematic cross-sectional view of a mid-span pipeline support structure of a pipeline bridge in a transverse direction of the bridge is shown in an embodiment of the present invention;

[0024] Figure 8 A schematic diagram showing a mid-span pipeline support structure of a pipeline bridge in the embodiment of the present invention along the bridge direction;

[0025] Fig. 9 A schematic diagram of a pipeline bridge with a continuous single-layer reinforced beam structure according to a second embodiment of the present invention;

[0026] Fig.10 express Fig. 9 The schematic diagram of the distribution beam of the pipeline bridge of the second embodiment is shown in the vertical direction of the bridge;

[0027] Fig.11 express Fig. 9 A schematic cross-sectional view of a distribution beam of a pipeline bridge in a second embodiment;

[0028] Fig.12 A schematic diagram of a pipeline bridge with a continuous double-layer reinforced beam structure according to a third embodiment of the present invention;

[0029] Fig.13 express Fig.12 A schematic cross-sectional view of the pipeline bridge abutment of the third embodiment is shown;

[0030] Fig.14 express Fig.12 A schematic cross-sectional view of the middle pier of the pipeline bridge of the third embodiment is shown;

[0031] Fig.15 A schematic diagram showing a double-layer reinforced beam structure of a pipeline bridge according to a third embodiment of the present invention;

[0032] Fig.16 express Fig.15 A schematic cross-sectional view of the double-layer reinforced beam structure of the pipeline bridge of the third embodiment is shown.

[0033] Figures 1 to 16Among them, 100 pipeline bridge, 101 beam body, 102 bridge deck cross beam, 103 pipeline support, 104 bridge deck, 105 guardrail, 106 bridge seat, 107 foundation, 108 distribution beam, 109 truss, 110 truss pin group, 111 male end column, 112 female end column, 113 reinforced chord, 114 chord bolt group, 115 erection beam, 116 clamp, 117 inner support frame I, 118 inter-group support frame II, 119 connecting beam, 120 support frame bolt group, 121 truss bolt group, 122 truss, 123 main truss group, 124 base, 125 adjusting screw, 126 pipeline support body, 127 pipe clamp, 128 U-bolt group, 129 male end vertical rod, 130 female end vertical rod, 131 upper chord, 132 lower chord. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a pipeline bridge 100, including: a bridge seat 106; a beam body 101, the beam body 101 is arranged on the bridge seat 106, the beam body 101 includes three groups of main truss groups 123 and inter-group support frames II 118, the main truss groups 123 include two single-layer reinforced trusses 122 arranged in parallel and an intra-group support frame I 117; a bridge deck crossbeam 102, which is arranged on the beam body 101, and the bridge deck crossbeam 102 is respectively connected to the trusses 122 arranged in parallel through U-bolt groups 128; a pipeline support 103, which is arranged on the bridge deck crossbeam 102, the pipeline support 103 is used to support and fix the pipeline, and the height of the pipeline support 103 relative to the bridge deck crossbeam 102 is adjustable.

[0036] The pipeline bridge 100 provided in the present application is an upper-bearing assembled pipeline bridge, which includes a bridge seat 106, a beam body 101, a bridge deck crossbeam 102, and a pipeline support 103. The bridge seat 106 serves as the basic supporting structure of the entire pipeline bridge 100, ensuring the stability and safety of the pipeline bridge 100. The bridge seat 106 can effectively transfer the load of the bridge and the pipeline to the foundation 107.

[0037] The beam body 101 is assembled with steel bridge equipment. Multiple trusses 122 arranged side by side share the load on the pipeline bridge 100, improving the load-bearing capacity and stability of the pipeline bridge 100, so that the pipeline bridge 100 can carry heavier pipelines and greater loads. The beam body 101 provided with an intra-group support frame Ⅰ117 and an inter-group support frame Ⅱ118 can also provide better side wind resistance and torsion resistance, thereby enhancing the overall stability of the bridge.

[0038] The bridge deck cross beam 102 is arranged on the trusses 122 arranged side by side to form a continuous bridge deck system, which can keep the bridge deck flat and continuous, and also enhance the overall stiffness and stability of the bridge. The bridge deck cross beam 102 can prevent the relative displacement between the trusses 122, ensuring the overall coordination and stability of the bridge when bearing loads. The pipe support 103 is arranged on the bridge deck cross beam 102, and the bridge deck cross beam 102 can provide a reliable support point for the pipe support 103, ensuring the stability and safety of the pipe support 103.

[0039] The pipe support 103 can adjust its height according to actual needs to accommodate pipes of different diameters and weights. The height-adjustable pipe support 103 not only improves the flexibility and convenience of pipe installation, but also ensures the stability and safety of the pipe on the bridge. In addition, by adjusting the height of the pipe support 103, the layout and direction of the pipe can be optimized, thereby improving the efficiency and reliability of pipe transportation.

[0040] In related technologies, when pipeline bridges cross gullies, culverts are often built at the bottom, and then backfill is built above the culvert to form an earth-rock dam; when pipelines need to cross lakes, mountain streams, and canyons, the conventional design idea is to build bolted beam bridges. Then pipelines, pavement, and protective railings are laid on the dam top and beam bridge deck.

[0041] The pipeline bridge 100 provided in the present application is an upper-supported assembled pipeline bridge, which applies assembled steel bridge equipment to the beam 101 of the pipeline bridge 100, and adopts a height-adjustable pipeline support 103 to solve the contradiction between the excessive deflection of the pin-connected beam 101 and the higher application stiffness requirement of the pipeline, and breaks through the misunderstanding that assembled steel bridges are not suitable for use in pipeline bridges 100 with high rigidity requirements, thereby giving full play to the advantages of assembled bridges in construction and solving the problems of high construction cost and long construction period of the pipeline bridge 100.

[0042] In some embodiments, optionally, Figure 3 and Figure 4 As shown, the beam body 101 includes: three groups of main truss groups 123, the main truss group 123 includes two single-layer reinforced truss beams 122 arranged in parallel, the truss beam 122 includes a plurality of trusses 109 connected in series by a truss pin group 110, and the truss 109 is a factory welded unit, including an upper chord 131 and a lower chord 132;

[0043] The reinforcing chord 113 is arranged outside the upper chord 131 and the lower chord 132, and is connected to the upper chord 131 and the lower chord 132 via a chord bolt group 114. The reinforcing chords 113 are also connected in series via a truss pin group 110.

[0044] In this embodiment, the truss 122 includes a series of trusses 109 and a reinforcing chord 113. The truss 122 is the core part of the beam body 101, and a continuous support system is formed by a plurality of series-connected trusses 109. Each truss 109 includes an upper chord 131 and a lower chord 132, and the upper chord 131, the lower chord 132 and the reinforcing chord 113 jointly bear the bending load of the bridge. The truss 109 is a factory-welded unit with a simple structure, easy to assemble and disassemble, and helps to reduce the construction difficulty and cost. A reinforcing chord 113 is arranged on the outer side of the upper chord 131 and the lower chord 132, and the arrangement of the reinforcing chord 113 further enhances the load-bearing capacity of the truss 122 and also enhances its fatigue resistance. The reinforcing chord 113 is tightly connected to the upper chord 131 and the lower chord 132 through the chord bolt group 114 to form a more solid overall structure, so that the bridge can withstand a larger load while maintaining good stability. The connection method of the chord bolt group 114 allows the reinforced chord 113 to be easily disassembled and replaced, which helps to regularly inspect and maintain the reinforced chord 113 during the use of the bridge, ensuring that it is always in good working condition.

[0045] In some embodiments, optionally, Figure 3 and Figure 4 As shown, the truss 109 includes a male end vertical rod 129, and the main truss group 123 also includes: an intra-group support frame I 117, which is arranged inside the main truss group 123 and is used to connect the male end vertical rod 129 and the lower chord rod 132 of the corresponding two trusses 109 respectively.

[0046] In this embodiment, the truss 109 includes a male end vertical rod 129, and the provision of the male end vertical rod 129 enhances the overall structural stability of the truss 109. In particular, when the truss 109 is subjected to a vertical load, the male end vertical rod 129 can provide reliable support to prevent the truss 109 from deformation or instability.

[0047] The internal support frame I 117 connects the male end vertical rods 129 and the lower chord rods 132 of the corresponding two trusses 109 to form a transverse support system, thereby strengthening the overall rigidity of the main truss group 123, preventing relative displacement and deformation between the trusses 122, and improving the stability and safety of the bridge.

[0048] The internal support frame I 117 enables the beam body 101 to better resist the effects of dynamic loads such as wind loads. Under the effects of wind loads, the internal support frame I 117 can reduce the lateral displacement and vibration of the truss beam 122.

[0049] The structure of the internal support frame I117 is relatively simple and easy to install and disassemble, which reduces the construction difficulty and cost, and improves the maintenance efficiency of the bridge. When it is necessary to repair or replace components, the internal support frame I117 can be easily disassembled to carry out necessary inspection and maintenance work.

[0050] In some embodiments, optionally, Figure 3 and Figure 4 As shown, the truss beam 122 also includes a male end column 111 and a female end column 112. The truss beam 122 also includes: a connecting beam 119, which is arranged at both ends of the main truss group 123 and is used to connect the two male end columns 111 and the female end columns 112 arranged side by side.

[0051] In this embodiment, the truss beam 122 further includes two male end columns 111 and a female end column 112 . The male end column 111 and the female end column 112 can stably transfer the load on the bridge to the bridge seat 106 .

[0052] The connection beam 119 connects two corresponding end columns in the main truss group 123 to form a transverse support system, thereby strengthening the connection and stability of the beam body 101 in the transverse direction and preventing relative displacement and deformation between the trusses 122.

[0053] The existence of the connecting beam 119 makes the beam body 101 form a more integrated and rigid structural system. The overall stiffness of the bridge is improved, so that the bridge can better maintain its shape and stability when bearing loads. The connecting beam 119 and the end column together constitute a stable support system for the beam body 101, improving the wind load resistance and earthquake resistance of the bridge.

[0054] In some embodiments, optionally, Figure 3 and Figure 4 As shown, the truss 109 also includes a female end vertical rod 130 , and the beam body 101 also includes: an inter-group support frame II 118 , which is arranged between two main truss groups 123 arranged side by side and is used to connect the female end vertical rods 130 of the corresponding two trusses 109 .

[0055] In this embodiment, the truss 109 further includes a female end vertical rod 130, which corresponds to the male end vertical rod 129. The inter-group support frame II 118 connects the female end vertical rods 130 of the two corresponding trusses 109 to form a transverse support system, which further strengthens the connection and stability of the beam body 101 in the transverse direction, and helps to prevent relative displacement and deformation between the trusses 122.

[0056] The inter-group support frame II 118 not only strengthens the lateral connection of the beam body 101, but also optimizes the force distribution. When the bridge is loaded, the inter-group support frame II 118 can share part of the load and transfer it to the adjacent main truss group 123, thereby reducing the force on the single truss beam 122 and helping to improve the load-bearing capacity and stability of the bridge.

[0057] In some embodiments, optionally, Figure 3 and Figure 4 As shown, the beam body 101 further includes: a cross beam 115 , which is disposed in the truss 109 and is fastened to the truss 109 via a clamp 116 .

[0058] In this embodiment, the beam body 101 further includes a cross beam 115, which can enhance the local load-bearing capacity of the truss 109, help prevent structural damage caused by excessive local load, and improve the overall safety of the bridge. The cross beam 115 is fastened to the truss 109 by a clamp 116, so that the load can be more evenly distributed on each row of trusses 109, reducing structural fatigue and damage caused by stress concentration.

[0059] During the construction of the pipeline bridge 100, the clamp 116 can be easily installed and removed, thereby improving the construction efficiency. During the maintenance of the pipeline bridge 100, the connection of the clamp 116 facilitates the inspection and replacement of damaged components, thereby reducing the maintenance cost.

[0060] In some embodiments, optionally, Figure 3 and Figure 4 As shown, the beam body 101 further includes: a male end column 111, which is arranged at one end of the main truss; and a female end column 112, which is arranged at the other end of the main truss.

[0061] In this embodiment, the truss beam 122 further includes a male end column 111 and a female end column 112. The male end column 111 and the female end column 112, as end members of the truss beam 122, not only enhance the integrity and stability of the beam body 101, but also optimize the force transmission path, improve the connection reliability and the convenience of construction and maintenance. When the bridge bears a load, the load can be more smoothly transmitted to the bridge seat 106 through the male end column 111 and the female end column 112.

[0062] In some embodiments, optionally, Fig. 9 and Fig.10 As shown, the pipeline bridge 100 further includes: a distribution beam 108 , which is disposed above the bridge seat 106 and is hinged to the bridge seat 106 , and the distribution beam 108 abuts against the bottom surface of the beam body 101 .

[0063] In this embodiment, the pipeline bridge 100 further includes a distribution beam 108. The distribution beam 108 is located between the bridge seat 106 and the beam body 101, and can disperse the load transmitted from the beam body 101. Since the distribution beam 108 is hinged to the bridge seat 106 and directly contacts the bottom surface of the beam body 101, the concentrated load can be effectively dispersed to a larger area of ​​the bridge seat 106, thereby reducing the pressure per unit area and improving the bearing capacity of the bridge.

[0064] The overall structural stability of the bridge is enhanced by hingedly connecting the distribution beam 108 to the bridge seat 106. This connection allows the distribution beam 108 to rotate to a certain extent when subjected to load, thereby better adapting to changes in load and reducing the risk of structural deformation and damage caused by load concentration.

[0065] In some embodiments, optionally, Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the pipe support 103 includes: a base 124, which is arranged on the bridge deck beam 102; a pipe support body 126, which is connected to the base 124 through an adjusting screw 125; and a pipe clamp 127, which is bolted to the pipe support body 126, and the pipe clamp 127 is used to clamp the pipe.

[0066] in, Figure 5 and Figure 6 is a schematic diagram of the pipe support 103 at the span end, Figure 7 and Figure 8 Schematic diagram of the pipe support 103 at the mid-span.

[0067] In this embodiment, the pipe support 103 includes a base 124, a pipe support body 126 and a pipe clamp 127. The setting of the adjusting screw 125 enables the pipe support body 126 to be adjusted in height relative to the base 124, so as to facilitate the adjustment of the installation height of the pipe according to actual needs at the construction site. The base 124 is arranged on the bridge deck crossbeam 102, providing a stable support foundation for the pipe support 103. The base 124 can ensure that the support body and the pipe thereon remain stable when bearing loads to avoid shaking or tilting. The pipe support body 126 is used to support the pipe and is a key structure connecting the base 124 and the pipe. The clamping force and method of the pipe clamp 127 can be adjusted according to the size, material and load conditions of the pipe to ensure that the pipe is fully supported and protected on the support.

[0068] In some embodiments, optionally, Figure 1 As shown, the pipeline bridge 100 further includes: a foundation 107 , a bridge seat 106 is disposed on the foundation 107 ; a bridge deck 104 , disposed on a bridge deck cross beam 102 ; and a plurality of guardrails 105 , a plurality of guardrails 105 are disposed on the bridge deck cross beam 102 .

[0069] In this embodiment, the pipeline bridge 100 also includes a foundation 107, a bridge deck 104 and a plurality of guardrails 105. The foundation 107 serves as the supporting base of the bridge, and is used to bear the weight and load of the bridge seat 106 and all structures thereon, and to disperse these loads into the underground soil. The bridge deck 104 is closely connected to the bridge deck crossbeam 102 to form an integral structure, which enhances the structural integrity and stability of the bridge. The guardrails 105 are mainly used to prevent vehicles and pedestrians from falling from the bridge and to ensure the safety of traffic participants. By reasonably setting the height, strength and spacing of the guardrails, the effectiveness of the guardrails can be ensured in various situations. The guardrails 105 can also serve as visual guides to help drivers and pedestrians identify the edges and boundaries of the bridge, thereby improving traffic safety.

[0070] At present, various pipelines (gas pipes, water pipes, oil pipes) inevitably need to cross large span obstacles such as lakes, mountain streams, canyons, etc., and these pipelines have low rigidity, so they can only meet the higher application rigidity required for their operation by adding more dense supporting brackets. Therefore, most pipelines are attached to existing bridges. For bridges that do not take into account the development coefficient, or areas with long detours or even wilderness, it is imperative to build pipeline infrastructure.

[0071] The main difficulties in the design of top-supported assembled pipeline bridges are: ⑴ Based on the design of this type of bridge, the rigidity technical indicators of the bridge should be used as the control design factor. It is necessary to select the most suitable bridge structure type (determine whether to use a simply supported beam type or a continuous beam type) through force analysis and comprehensive economic cost accounting, and select the most suitable beam body combination structure type. ⑵ Combined with the specific gap deflection of the bridge and the deflection of the dead load, static and live load, a reliable and easy-to-operate self-adjusting height pipeline support 103 device is designed.

[0072] Terminology explanation:

[0073] Term 1: Section length: The distance between the center holes of the male and female joints of the factory-welded 321-type truss unit is 3 meters.

[0074] Term 2: Truss height: The center distance between the upper and lower chords of the factory-welded 321-type truss unit is 1.4 meters.

[0075] Term 3: Truss spacing: In this briefing, the spacing between the trusses within the main truss group is 0.45 meters; the spacing between the trusses between groups is 0.9 meters;

[0076] Term 4: Single truss: A flat steel structure composed of a male end column 111, a 321-type truss, a truss bolt group 121, a reinforcing chord 113, a chord bolt group 114, a female end column 112, and a truss pin group 110.

[0077] Term 5: Main truss group: A steel structure frame consisting of two trusses connected by a transverse connection system.

[0078] The pipeline bridge 100 provided in the present application is an upper-bearing assembled pipeline bridge, comprising: a combined main beam (beam body 101), a bridge deck cross beam 102, a pipeline support 103, a bridge deck 104, a guardrail 105 and a bridge seat 106. Its main innovation is to apply assembled steel bridge equipment to the beam structure of the pipeline bridge 100; with the use of a highly adjustable pipeline support 103, the contradiction between the excessive deflection of the pin-connected main beam and the high application stiffness requirement of the pipeline is solved, breaking through the misunderstanding that assembled steel bridges are not suitable for use in pipeline bridges 100 with high rigidity requirements, thereby giving full play to the advantages of assembled bridges in construction.

[0079] In a specific embodiment, the pipeline bridge 100 provided in the present application is an upper-supported assembled pipeline bridge, including a combined beam body 101, a bridge deck crossbeam 102, a pipeline support 103, a bridge deck 104, a guardrail 105, a bridge seat 106 and other structures.

[0080] The top-supported assembled pipeline bridge is erected on a preset foundation (foundation 107 ), wherein the bridge seat 106 is fixed on the preset foundation, and its function is to transmit the static and live loads borne by the bridge to the foundation 107 .

[0081] On the preset foundation of the abutments on both sides, the bridge seat 106 is fixed on the preset foundation of the abutments on both sides by anchor bolts. The bridge seat 106 is hinged with the male end column 111 and the female end column 112 of the combined beam body.

[0082] On the preset foundation at the middle pier of the continuous pipeline bridge 100, the bridge seat 106 is fixed on the preset foundation by anchor bolts, and the distribution beam 108 is hinged on the bridge seat 106. The distribution beam 108 is closely attached to the bottom surface of the lower chord of the combined main beam, which can not only transmit the force of the main beam, but also realize the secondary distribution of the load on the main beam.

[0083] The combined beam body 101 is the main body of the bridge to bear static and live loads. The design of the beam body 101 not only determines the bearing capacity of the bridge, but also determines the rigidity of the bridge.

[0084] The combined beam body 101 includes a 321-type truss, a truss pin group 110, a male end column 111, a female end column 112, a reinforcing chord 113, a chord bolt group 114, a crossbeam 115, a crossbeam clamp, a 450-type support frame (intra-group support frame I 117), a 900-type support frame (inter-group support frame II 118), an end column connecting beam (connecting beam 119), and a support frame bolt group 120. The combined main beam with a double-layer structure also includes a truss bolt group 121.

[0085] The 321-type truss is a factory-welded unit, with female and male joints at both ends of the truss. The joints are pinned on site and connected in series to form a main truss using a truss pin group 110. According to different main truss structures, the single-layer reinforced single-frame truss is equipped with a reinforced chord 113 on the outside of the upper and lower chords of the truss, and the 321-type truss and the reinforced chord 113 are connected by a chord bolt group 114. The double-layer reinforced single-frame main truss is connected by two layers of 321-type trusses through a truss bolt group 121, and then a reinforced chord 113 is installed on the outside of the upper and lower chords of the newly formed truss unit. The male end column 111 and the female end column 112 are connected in series at both ends of each main truss.

[0086] Connection between each truss: The vertical rod 129 at the male end of the 321-type truss and the lower chord of the main truss are connected within the group using the internal support frame Ⅰ117; the end columns at both ends of the truss are connected with the end column connecting beam 119 to form a relatively stable main truss group.

[0087] Connection between main truss groups: The vertical rod 130 at the female end of the 321-type truss is connected with the inter-group support frame II 118; the above-mentioned connection fasteners all use the support frame bolt group 120. In order to ensure the stability of the bridge erection, an erection crossbeam 115 is installed on each section of the 321-type truss and fastened with a crossbeam clamp (clamp 116).

[0088] The bridge deck cross beam 102 is the link that connects the combined beam body 101. It is connected to the upper chord 131 of each truss beam 122 by using a U-bolt group. It is also the carrier of the pipe support 103, the bridge deck 104 and the guardrail 105. The base 124 of the pipe support 103, the end of the longitudinal beam of the bridge deck 104 and the column of the guardrail 105 are all welded to the bridge deck cross beam 102.

[0089] The bridge deck cross beam 102 is divided into two types according to its function, one of which is equipped with a pipe support 103 base 124.

[0090] The pipe support 103 is used to support and fix the pipe. The pipe support 103 has the function of self-adjusting height. Because the pin-jointed assembled pipe bridge 100 not only needs to compensate for the gap deflection and the deflection caused by the dead load before the pipe is installed, but also needs to consider setting a pre-arch to balance the deflection caused by the static and live loads.

[0091] The pipe support 103 mechanism includes a base 124 welded on the bridge deck cross beam 102, an adjusting screw 125, a pipe support body 126 and a pipe clamp 127. The pipe support body 126 is connected to the base 124 through the adjusting screw 125; and the pipe clamp 127 is bolted to the pipe support body 126.

[0092] Before installing the pipeline, the pipeline support bodies 126 should be adjusted one by one to the designed height according to the designed pre-arch line shape. After the pipeline is installed, an overall inspection can be carried out. By making local adjustments to the designed line shape, the adjustment workload can be greatly reduced.

[0093] The bridge deck 104 is a passageway for the safe passage of maintenance vehicles and personnel, and can be set according to the operation requirements. It can be either factory-welded units, installed on-site, or welded on-site.

[0094] The guardrail 105 is a facility for ensuring the safe passage of maintenance vehicles and personnel. It is generally welded in a factory and assembled and welded on site.

[0095] In specific embodiment 1, Figure 1 and Figure 2 As shown, the present application provides a 30-meter single-layer structure top-supported simply supported beam assembled pipeline bridge 100, including: a beam body 101, a bridge deck crossbeam 102, a pipeline support 103, a bridge deck 104, a guardrail 105 and a bridge seat 106 and other components.

[0096] On the preset foundation of the abutments on both sides, the bridge seat 106 is fixed on the preset foundation of the abutments on both sides by anchor bolts. The male end column 111 and the female end column 112 of the beam body 101 are hinged on the bridge seat 106.

[0097] The structural type of the beam body 101 in this embodiment is a six-row single-layer reinforced type, including a 321 type truss, a truss pin group 110, a male end column 111, a female end column 112, a reinforced chord 113, a chord bolt group 114, a mounting crossbeam 115, a crossbeam clamp, a 450 type support frame, a 900 type support frame, an end column connecting beam 119 and a support frame bolt group 120.

[0098] The 321 type truss is a factory-welded unit, with a female and male joint at each end of the truss. The joints are connected in series by a truss pin set 110. The single-layer reinforced main truss is used, that is, a reinforced chord 113 is installed on the outside of the upper and lower chords of the truss, and the 321 type truss and the reinforced chord 113 are connected by a chord bolt set 114. The two ends of the truss beam 122 are connected in series with a male end column 111 and a female end column 112.

[0099] Connection between trusses 122: The vertical rod 129 at the male end of the 321-type truss and the lower chord of the main truss are connected with a 450-type support frame; the end columns at both ends of the truss 122 are connected with the end column connecting beam 119 to form a relatively stable main truss group 123. Connection between main truss groups 123: The vertical rod 130 at the female end of the 321-type truss is connected with a 900-type support frame; the above-mentioned connection fasteners all use the support frame bolt group 120. In order to ensure the stability of the bridge erection, an erection crossbeam 115 is installed on each section of the 321-type truss and fastened with a crossbeam clamp.

[0100] The bridge deck cross beam 102 is the link that connects the combined beam body 101. It is connected to the upper chord of the truss beam 122 by using a U-bolt group. It is also the carrier of the pipe support 103, the bridge deck 104, and the guardrail 105. The base 124 of the pipe support 103, the end of the longitudinal beam of the bridge deck 104, and the column of the guardrail 105 are all welded to the bridge deck cross beam 102.

[0101] The bridge deck cross beam 102 is divided into two types according to its function, one of which is equipped with a pipe support 103 base 124.

[0102] The pipe support 103 device is used to support and fix the pipe. The pipe support 103 has the function of self-adjusting height. Because the pin-jointed assembled pipe bridge 100 must not only consider balancing the deflection caused by the dead load and static live load before the pipe is installed, but also eliminate the larger gap deflection. In this embodiment, after calculation, the gap deflection of the main truss is 45 mm; the dead load deflection is 25 mm; and the half static live load deflection is 15 mm. Therefore, the self-adjusting height of the pipe support 103 is not less than 85 mm.

[0103] The pipe support 103 device includes a base 124 welded on the bridge deck cross beam 102, an adjusting screw 125, a pipe support body 126 and a pipe clamp 127. The pipe support body 126 is connected to the base 124 through the adjusting screw 125; and the pipe clamp 127 is bolted to the pipe support body 126.

[0104] Before installing the pipeline, the pipeline support bodies 126 should be adjusted one by one to the designed height according to the designed pre-arch line type. After the pipeline is installed, the overall inspection can be carried out and the adjustment can be made to the designed line type locally, which can greatly reduce the adjustment workload.

[0105] The bridge deck 104 is a passageway for the safe passage of maintenance vehicles and personnel, and can be set according to the operation requirements. It can be either factory-welded units, installed on-site, or welded on-site.

[0106] The guardrail 105 is a facility for ensuring the safe passage of maintenance vehicles and personnel. It is generally welded in a factory and assembled and welded on site.

[0107] like Fig. 9 , Fig.10 and Fig.11 As shown, in the specific embodiment 2, the present application provides a 30 m×2 single-layer structured top-supported continuous assembled pipeline bridge 100, including components such as a beam body 101, a bridge deck crossbeam 102, a pipeline support 103, a bridge deck 104, a guardrail 105 and a bridge seat 106.

[0108] The bridge support 106 has the function of transmitting the load borne by the bridge to the abutments and the intermediate piers. The structure of the bridge support 106 at the abutments on both sides is similar to that of the first embodiment.

[0109] The bridge seat 106 is fixed to the preset foundation at the middle pier of the continuous pipeline bridge 100 by anchor bolts, and the distribution beam 108 is hinged on the bridge seat 106. The distribution beam 108 is closely attached to the bottom surface of the lower chord of the combined main beam. The calculation results show that the use of a continuous bridge type can effectively reduce the deflection of the pipeline bridge 100 under load.

[0110] The structure and function of the combined beam 101 are similar to those of Example 1. The structure and function of the bridge deck cross beam 102 are similar to those of Example 1. The structure and function of the pipe support 103 device are similar to those of Example 1. The structure and function of the bridge deck 104 are similar to those of Example 1. The structure and function of the guardrail 105 are similar to those of Example 1.

[0111] like Fig.12 , Fig.13 and Fig.14 As shown, in specific embodiment 3, the present application provides a 51 m×3 double-layer structured top-supported continuous assembled pipeline bridge 100.

[0112] A 51m×3 double-layer structured top-supported continuous assembled pipeline bridge 100 includes components such as a combined beam body 101, a bridge deck cross beam 102, a pipeline support 103, a bridge deck 104, a guardrail 105, and a bridge seat 106.

[0113] like Fig.15 and Fig.16 As shown, the structure of the combined beam body 101 in this embodiment is a six-row double-layer reinforced type, including a 321 type truss 109, a truss pin group 110, a male end column 111, a female end column 112, a reinforced chord 113, a chord bolt group 114, a mounting beam 115, a beam clamp, an intra-group support frame I 117, an inter-group support frame II 118, an end column connecting beam 119, a support frame bolt group 120 and a truss bolt group 121.

[0114] The single truss beam 122 of this embodiment adopts a double-layer reinforced main truss, that is, after connecting two layers of 321-type trusses 109 through a truss bolt group 121, a reinforced chord 113 is installed on the outer side of the upper and lower chords of the newly formed truss unit to form a combined truss. When erected on the construction site, the combined truss is connected in series by rows at the female and male joints at both ends of the combined truss using a truss pin group 110. And the male end column 111 and the female end column 112 are connected in series on the outer side of the lower truss at both ends of each truss beam that has been connected in series.

[0115] Connection between main trusses: The 321-type truss male end vertical rods 129 and the main truss lower chords at the upper and lower layers are connected by 450-type support frames; the end columns at both ends of the main trusses are connected by end column connecting beams 119 to form a relatively stable main truss group 123. Connection between main truss groups 123: The 321-type truss female end vertical rods 130 at the upper and lower layers are connected by inter-group support frames II 118; the above-mentioned connection fasteners all use support frame bolt groups 120. Similarly, in order to ensure the stability of the bridge erection, each section of the 321-type truss 109 at the lower layer of the main truss is installed with an erection crossbeam 115 and fastened with a crossbeam clamp.

[0116] The structure and function of the bridge seat 106 are similar to those of Example 2. The structure and function of the bridge deck cross beam 102 are similar to those of Example 1. The structure and function of the pipe support 103 device are similar to those of Example 1. The structure and function of the bridge deck 104 are similar to those of Example 1. The structure and function of the guardrail 105 are similar to those of Example 1.

[0117] In summary, the pipeline bridge 100 provided in the present application is an upper-supported assembled pipeline bridge, which applies assembled steel bridge equipment to the main beam structure of the pipeline bridge 100; combined with the use of a height-adjustable pipeline support 103, it solves the contradiction between the excessive deflection of the pin-connected main beam and the higher application stiffness requirements of the pipeline, and breaks through the misunderstanding that assembled steel bridges are not suitable for use in pipeline bridges 100 with high rigidity requirements, thereby giving full play to the advantages of assembled bridges in construction.

[0118] By applying prefabricated steel bridge equipment to the main beam structural design of the pipeline bridge 100, it is easy to select and match a scientific and reasonable main beam combination method for different design loads and spans; it is also possible to flexibly set the number and arrangement size of the truss beams according to different planning requirements of the bridge deck; it can also adapt to the layout technical status of the continuous bridge and greatly reduce the deformation of the bridge. The top-bearing prefabricated pipeline bridge provided by this application has the following advantages:

[0119] ⑴ The sources of construction materials are sufficient, the degree of universalization and standardization is high, and the manufacturing precision is reliable.

[0120] ⑵ By setting a height-adjustable pipe support, the rigidity requirements of water pipeline applications can be met.

[0121] ⑶ There are rich choices of bridge types, both simply supported and continuous bridge types can be used.

[0122] ⑷ The beam combination forms are diverse and have a wide range of applications.

[0123] ⑸Low construction cost and short construction period.

[0124] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A pipeline bridge (100), characterized in that: include: Bridge seat (106); A beam body (101), the beam body (101) being arranged on the bridge seat (106), the beam body (101) comprising a plurality of main truss groups (123) and an inter-group support frame II (118), the main truss group (123) comprising a plurality of truss beams (122) arranged side by side and an intra-group support frame I (117); A bridge deck cross beam (102) is arranged on the beam body (101), and the bridge deck cross beam (102) is respectively connected to the truss beams (122) arranged side by side through a U-shaped bolt group (128); A pipe support (103) is arranged on the bridge deck cross beam (102); the pipe support (103) is used to support and fix the pipe; and the height of the pipe support (103) relative to the bridge deck cross beam (102) is adjustable.

2. The pipeline bridge (100) according to claim 1, characterized in that: The truss (122) includes a plurality of trusses (109) connected in series by a truss pin set (110), wherein the truss (109) is a factory welded unit including an upper chord (131) and a lower chord (132); The beam body (101) further comprises: a reinforcing chord (113) arranged outside the upper chord (131) and the lower chord (132), wherein the reinforcing chord (113) is connected to the upper chord (131) and the lower chord (132) via a chord bolt group (114). The reinforcing chords (113) are also connected in series via a truss pin group (110).

3. The pipeline bridge (100) according to claim 2, characterized in that: The truss (109) includes a male end vertical rod (129), The inner support frame I is used to connect the male end vertical rods (129) and the lower chord rods (132) of the two corresponding trusses (109).

4. The pipeline bridge (100) according to claim 2, characterized in that: The truss beam (122) further comprises a male end column (111) and a female end column (112), and the main truss group (123) further comprises: The connecting beam (119) is located at both ends of the main truss group (123) and is used to connect two male end columns (111) and female end columns (112) arranged side by side.

5. The pipeline bridge (100) according to claim 2, characterized in that: The truss (109) further comprises a female end vertical rod (130), and the inter-group support frame II (118) is used to connect the female end vertical rods (130) of the corresponding two trusses (109).

6. The pipeline bridge (100) according to claim 2, characterized in that: The beam body (101) further comprises: A crossbeam (115) is installed inside the truss (109) and is fastened to the truss (109) via a clamp (116).

7. The pipeline bridge (100) according to any one of claims 1 to 6, characterized in that: The pipeline bridge (100) further comprises: The distribution beam (108) is arranged above the bridge seat (106) and is hinged to the bridge seat (106). The distribution beam (108) abuts against the bottom surface of the truss beam (122).

8. The pipeline bridge (100) according to any one of claims 1 to 6, characterized in that: The pipeline support (103) comprises: A base (124) is arranged on the bridge deck crossbeam (102); The pipe support body (126) is connected to the base (124) via an adjusting screw (125).

9. The pipeline bridge (100) according to claim 8, characterized in that: The pipeline support (103) further comprises: A pipe clamp (127) is bolted to the pipe support body (126), and the pipe clamp (127) is used to clamp the pipe.

10. The pipeline bridge (100) according to any one of claims 1 to 6, characterized in that: The pipeline bridge (100) further comprises: A foundation (107), wherein the bridge seat (106) is arranged on the foundation (107); A bridge deck (104) is arranged on the bridge deck crossbeam (102); A plurality of guardrails (105), wherein the plurality of guardrails (105) are arranged on the bridge deck crossbeam (102).

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