CN214530201U - Self-anchored pipeline suspension bridge steel pipe truss girder and self-anchored pipeline suspension bridge - Google Patents
Self-anchored pipeline suspension bridge steel pipe truss girder and self-anchored pipeline suspension bridge Download PDFInfo
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- CN214530201U CN214530201U CN202120375947.6U CN202120375947U CN214530201U CN 214530201 U CN214530201 U CN 214530201U CN 202120375947 U CN202120375947 U CN 202120375947U CN 214530201 U CN214530201 U CN 214530201U
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Abstract
The utility model discloses a self-anchored pipeline suspension bridge steel pipe truss girder and self-anchored pipeline suspension bridge, the steel pipe truss girder includes side span steel pipe truss girder and midspan steel pipe truss girder, two upper chords, two lower chords, each vertical web member, each diagonal web member and each end cross-linked filler of the side span steel pipe truss girder are filled with iron sand concrete; iron sand concrete is filled in positions, close to two ends of the midspan steel pipe truss girder, in two upper chords and two lower chords of the midspan steel pipe truss girder, iron sand concrete is filled in a plurality of vertical web members and a plurality of inclined web members, close to two ends of the midspan steel pipe truss girder, in the midspan steel pipe truss girder, and iron sand concrete is filled in a cross-connection of each end of the midspan steel pipe truss girder. The utility model discloses increase the regional interior weight of limit span steel pipe truss girder and midspan steel pipe truss girder, the effectual atress that improves the support, self-anchored pipeline suspension bridge demonstrates good structure static performance.
Description
Technical Field
The utility model belongs to the technical field of bridge engineering, concretely relates to from anchor pipeline suspension bridge steel pipe truss girder and from anchor pipeline suspension bridge.
Background
The self-anchored pipeline suspension bridge is novel in shape, economical, good and strong in adaptability, and is commonly used in the crossing engineering of oil and gas transmission. The difference with the ground anchor type suspension bridge lies in that the main cable is directly anchored at the end of the steel main beam, a strong anchorage is cancelled, and the construction sequence of the stiffening beam and the main cable is just opposite to that of the ground anchor type suspension bridge. In recent years, in many areas, a bridge is considered to be built when an oil and gas conveying pipeline crosses a valley and a lake, the use function of the bridge is considered, meanwhile, the attractive appearance and later social and economic effects of the bridge are considered, a suspension bridge with relatively high cost and excellent linearity is often selected, but the requirements of an earth anchor type suspension bridge on the terrain and the geology are high, and a self-anchored type suspension bridge is more and more favored by people in areas with relatively low geological requirements due to the inherent structural mechanical property of the self-anchored type suspension bridge, so that the self-anchored type suspension bridge is one of bridge types with great competitiveness in medium and small span bridges.
Generally, a stiffening beam of a self-anchored pipeline suspension bridge is often constructed and erected before a main cable, and is temporarily supported on a bracket and a main tower after the erection is completed. And then, after the main cable is erected and the sling is installed (system conversion), the stress of the stiffening beam is slowly transited from the stress of the temporary pier to the stress of the main cable. At the moment, the tension generated by the main cable often generates huge uplifting force at the beam end, along with the system conversion (sling tensioning) process, the tensioning force of the main cable is larger and larger, the vertical component force at the joint of the two ends of the stiffening beam and the tower beam is increased simultaneously, and in the normal operation stage of the bridge formation, under the combined action of live load and dead load, the acting force can be further increased, so that the support is unfavorable, and the operation safety of the structure is influenced.
In order to balance the huge uplift force generated at the joint of the end part of the main beam and the tower beam by the dead load and the live load, the common solution is to arrange a tension-compression support, a chain rod, an anchor span, a concrete block and the like. The self-anchored suspension bridge has long service life, and is easy to generate fatigue effect by adopting a mode of designing a tension and compression support or a chain rod, so that the structure is unfavorable to stress, the tension and compression support is not completely rigid, and can generate elastic deformation in the operation process of the bridge, and simultaneously, a stiffening beam generates deformation, so that the reasonable bridge forming line type of a main beam is influenced; the anchor span needs to be heavy enough to meet the requirement of balancing the tension of the main cable; the concrete block is placed in the structural form that the stiffening beam is a box beam, manual intervention is needed, and the construction operation time is prolonged.
Disclosure of Invention
To the technical problem who exists among the prior art, the utility model provides a from anchor pipeline suspension bridge steel pipe truss girder and from anchor pipeline suspension bridge, increase the regional interior weight of sidespan steel pipe truss girder and midspan steel pipe truss girder, do not influence steel truss girder appearance pleasing to the eye, and demonstrate good structural static force performance from anchor pipeline suspension bridge, can balance the pull-up force that the main push-towing rope produced girder tip and tower beam combination department, the effectual atress performance that has improved the support, overall structure's durability has been improved, situation to basic condition is not good, from anchor pipeline suspension bridge can the significantly reduce construction period, promote structure and all ring edge borders harmony and unity, promote economic development.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
a self-anchored pipeline suspension bridge steel pipe truss girder comprises a side span steel pipe truss girder and a mid span steel pipe truss girder, wherein the side span steel pipe truss girder and the mid span steel pipe truss girder respectively comprise two upper chords and two lower chords, the two upper chords are located in the same plane and are arranged oppositely and parallelly, the two ends of the two upper chords are connected through end cross-linking, the two lower chords are located in the same plane and are arranged oppositely and parallelly, and the two ends of the two lower chords are connected through end cross-linking, wherein one lower chord is located under one upper chord and is arranged parallelly, and the other lower chord is located under the other upper chord and is arranged parallelly; one lower chord is connected with one upper chord through a plurality of vertical web members and a plurality of inclined web members, and the other lower chord is connected with the other upper chord through a plurality of vertical web members and a plurality of inclined web members;
iron sand concrete is filled in the two upper chords, the two lower chords, each vertical web member, each inclined web member and each end cross connection of the main girder of the side span steel pipe truss;
the steel-sand concrete is filled in the positions, close to the two ends of the midspan steel tube truss girder, in the two upper chords and the two lower chords of the midspan steel tube truss girder, the iron-sand concrete is filled in the plurality of vertical web members and the plurality of inclined web members, close to the two ends of the midspan steel tube truss girder, and the iron-sand concrete is filled in each end cross-link of the midspan steel tube truss girder.
Furthermore, the two upper chords are connected through a plurality of upper flat longitudinal links, and the two lower chords are connected through a plurality of lower flat longitudinal links.
Furthermore, two between the upper chord member a plurality of the upper flat longitudinal ties are connected in proper order at a certain angle, two between the lower chord member a plurality of the lower flat longitudinal ties are connected in proper order at a certain angle.
Furthermore, the upper chord member, the lower chord member, the vertical web member, the inclined web member, the end transverse connection, the upper flat longitudinal connection and the lower flat longitudinal connection all adopt seamless steel pipes.
Furthermore, two upper chords and two lower chords are connected with a breast board respectively.
Furthermore, one lower chord member and one a plurality of between the upper chord member erect web members and another lower chord member and another a plurality of between the upper chord member erect web members and equipartition setting respectively.
Furthermore, two adjacent erect and be connected with one between the web member oblique web member, just the one end of oblique web member is connected with the upper end of a perpendicular web member, the other end and the lower extreme of another perpendicular web member of oblique web member are connected.
The side-span steel pipe truss girder and the middle-span steel pipe truss girder of the self-anchored pipeline suspension bridge are applied to both the side-span steel pipe truss girder and the middle-span steel pipe truss girder.
Compared with the prior art, the utility model discloses following beneficial effect has at least: the utility model provides a self-anchored pipeline suspension bridge steel pipe truss girder, through pouring iron sand concrete in two upper chords, two lower chords, each vertical web member, each diagonal web member and each end cross-linking of the self-anchored pipeline suspension bridge side-span steel pipe truss girder, and the position that is close to the two ends of the midspan steel pipe truss girder is filled with iron sand concrete in two upper chords and two lower chords of the midspan steel pipe truss girder, a plurality of vertical web members and a plurality of diagonal web members that are close to the two ends of the midspan steel pipe truss girder are filled with iron sand concrete, and each end cross-linking of the midspan steel pipe truss girder is filled with iron sand concrete, namely the iron sand concrete is poured in the symmetry range of the negative bending moment of the midspan steel pipe truss girder, so that the static performance of the self-anchored pipeline suspension bridge is improved, the main cable can be balanced to generate pull-up force to the girder end and the tower beam junction, the bearing force performance is effectively improved, the durability of the whole structure is improved, the self-anchored suspension bridge is selected for the situation of poor foundation conditions, the construction period can be greatly shortened, the harmony and unity of the structure and the surrounding environment are promoted, the appearance is novel and attractive, and the development of the third industry is further promoted.
Further, connect through a plurality of flat longitudinal ties on going up between two upper chords, connect through a plurality of flat longitudinal ties down between two lower chords to can resist the level to the load, provide the side direction support for double-deck steel pipe truss girder.
Furthermore, a plurality of upper flat longitudinal links between the two upper chords are connected in sequence at a certain angle, and a plurality of lower flat longitudinal links between the two lower chords are connected in sequence at a certain angle, so that all the flat longitudinal links are stressed and force-transferred uniformly, the material strength can be fully utilized, and the fatigue resistance of the flat longitudinal links is improved.
Furthermore, the upper chord member, the lower chord member, the vertical web members, the oblique web members, the end cross-links, the upper horizontal longitudinal links and the lower horizontal longitudinal links all adopt seamless steel pipes, and the steel pipes are prevented from being distorted and deformed by welding, so that the hybrid pipeline cable-stayed bridge is ensured to have sufficient strength and bearing capacity.
Further, be connected with the breast board on two last chords and two lower chords respectively, when this bridge becomes the bridge operation, the guarantee overhauls the safety of workman regularly patrolling during the maintenance, and is swift, improves maintainer's work efficiency.
Furthermore, a plurality of vertical web members between one lower chord and one upper chord and a plurality of vertical web members between the other lower chord and the other upper chord are uniformly distributed and arranged respectively, and the shear force can be resisted and the bending rigidity of the whole structure can be increased under the action similar to a box girder web plate.
Furthermore, an oblique web member is connected between two adjacent vertical web members, one end of the oblique web member is connected with the upper end of one vertical web member, the other end of the oblique web member is connected with the lower end of the other vertical web member, the web members are clear in stress, simple in structure, few in rod member and node type and convenient for standardized design, manufacturing and installation.
A self-anchored pipeline suspension bridge is characterized in that an edge-span steel pipe truss girder and a middle-span steel pipe truss girder are applied to an edge-span steel pipe truss girder and a middle-span steel pipe truss girder of the self-anchored pipeline suspension bridge, so that the static performance of the self-anchored pipeline suspension bridge is improved, the uplifting force of a main cable on the joint of the end part of the girder and a tower beam can be balanced, the stress performance of a support is effectively improved, the durability of the whole structure is improved, the construction period can be greatly reduced by selecting the self-anchored suspension bridge according to the situation that the basic condition is not good, the harmonious unification of the structure and the surrounding environment is promoted, the appearance is novel and attractive, and the development of a third industry is further promoted.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a three-dimensional structure of a steel pipe truss girder of a self-anchored pipeline suspension bridge of the present invention;
fig. 2 is a schematic structural view of a self-anchored pipeline suspension bridge of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of the self-anchoring conduit suspension bridge shown in FIG. 2;
fig. 4 is a cross-sectional view at B-B of the self-anchored pipeline suspension bridge shown in fig. 2.
1-upper chord; 2-lower chord; 3-erecting a web member; 4-diagonal web members; 5-end cross connection; 6-iron sand concrete; 7-upper flat longitudinal connection; 8-lower horizontal longitudinal connection; 9-a breast board; 10-side span steel pipe truss main beam; 11-midspan steel pipe truss girder; 12-a main cable; 13-a boom; 14-oil and gas pipeline.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As a specific embodiment of the present invention, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, a self-anchored pipeline suspension bridge steel pipe truss girder, steel pipe truss girder includes side span steel pipe truss girder 10 and mid span steel pipe truss girder 11, side span steel pipe truss girder 10 and mid span steel pipe truss girder 11 all include two upper chords 1 and two lower chords 2, two upper chords 1 are located in the coplanar and just to and parallel arrangement, two upper chords 1's both ends are connected through end cross-connection 5, connect through a plurality of upper level longitudinal ties 7 between two upper chords 1, it is preferred, a plurality of upper level longitudinal ties 7 between two upper chords 1 are certain angle and connect gradually. Two lower chords 2 are located the coplanar and just to and parallel arrangement, and the both ends of two lower chords 2 are passed through end cross-under 5 and are connected, connect through a plurality of lower flat vertical ties 8 between two lower chords 2, and preferably, a plurality of lower flat vertical ties 8 between two lower chords 2 are certain angle and connect gradually.
The utility model discloses the end cross-under 5 of midspan steel pipe truss girder 11 mentioned in, also be called well cross-under.
As shown in fig. 1, 3 and 4, one lower chord 2 of the side span steel pipe truss main beam 10 and the middle span steel pipe truss main beam 11 is positioned right below one upper chord 1 and arranged in parallel, and the other lower chord 2 is positioned right below the other upper chord 1 and arranged in parallel. One lower chord 2 is connected with one upper chord 1 through a plurality of vertical web members 3 and a plurality of diagonal web members 4, and the other lower chord 2 is connected with the other upper chord 1 through a plurality of vertical web members 3 and a plurality of diagonal web members 4. Preferably, a plurality of vertical web members 3 between one lower chord 2 and one upper chord 1 and a plurality of vertical web members 3 between another lower chord 2 and another upper chord 1 are uniformly distributed, an oblique web member 4 is connected between two adjacent vertical web members 3, one end of the oblique web member 4 is connected with the upper end of one vertical web member 3, and the other end of the oblique web member 4 is connected with the lower end of another vertical web member 3.
As shown in fig. 4, iron-sand concrete 6 is filled in the two upper chords 1, the two lower chords 2, each vertical web member 3, each diagonal web member 4 and each end cross member 5 in the main girder 10 of the side-span steel pipe truss.
As shown in fig. 1, 3 and 4, two upper chords 1 and two lower chords 2 of an edge-span steel pipe truss main beam 10 and a middle-span steel pipe truss main beam 11 are respectively connected with a fence 9, in fig. 1, only a part of the fence 9 is drawn for the convenience of clearly showing the structures of the edge-span steel pipe truss main beam 10 and the middle-span steel pipe truss main beam 11, and in practice, the fence 9 is connected along the length directions of the two upper chords 1 and the two lower chords 2.
The utility model provides an upper chord member 1, lower chord member 2, perpendicular web member 3, oblique web member 4, end horizontal joint 5, go up flat longitudinal joint 7 and lower flat longitudinal joint 8 all adopt seamless steel pipe. The seamless steel pipe adopts a finished steel pipe, the quality is ensured, the steel pipe is prevented from being distorted and deformed by welding, the self-anchored pipeline suspension bridge is ensured to have enough strength and bearing capacity, the steel pipes are assembled by welding, the construction is convenient and fast, and the tight connection among all the components is ensured.
As shown in fig. 2, the utility model provides a from anchor pipeline suspension bridge, this from anchor pipeline suspension bridge's side span steel pipe truss girder 10 and midspan steel pipe truss girder 11 all use the utility model side span steel pipe truss girder 10 and midspan steel pipe truss girder 11. Specifically, the self-anchored pipeline suspension bridge further comprises a midspan steel pipe truss girder 11, a main cable 12 and a suspender 13, wherein the steel pipe truss girder needs to be buried in an anchorage cross beam, the main cable 12 is also anchored on the anchorage cross beam, the anchorage cross beam is placed on a bridge abutment through a plate type rubber support, the anchorage of the suspender 13 on an upper chord 1 of the steel pipe truss girder adopts the structural form of an anchorage plate, and the horizontal tension generated by the main cable 12 and the axial pressure of the steel pipe truss girder are balanced with each other, so that a self-anchored pipeline structure system is formed. And the anchor plate is welded with the surface of the upper chord 1 of the steel pipe truss girder. The anchor plate is made of Q390D steel, the main cable 12 is made of prefabricated parallel steel wires with the diameter of 37-127 phi 5.3mm, and the prefabricated parallel steel wires are high-strength galvanized parallel steel wire bundles. The rise-span ratio of the main span is 1/5.8, the full bridge is provided with 46 pairs of suspension rods, wherein, two side spans are respectively provided with 11 pairs, the middle span is provided with 24 pairs, and the basic distance of the suspension rods is 9.5 meters.
As shown in fig. 1, 2, 3 and 4, in use, the oil and gas pipelines 14 are disposed on the two end cross links 5 of the upper chord 1 and the two end cross links 5 of the lower chord 2, specifically, in one embodiment, one natural gas pipeline is disposed on the two end cross links 5 of the upper chord 1, and two crude oil pipelines are disposed on the two end cross links 5 of the lower chord 2.
In a specific embodiment, the span of the self-anchored pipeline suspension bridge is arranged to be 78m +190m +78m, that is, the span of two side-span steel pipe truss girders 10 is 78m, the span of one mid-span steel pipe truss girder 11 is 190m, and the total length of the self-anchored pipeline suspension bridge is 346 m. The internode length of the mid span is 4m, the standard internode length of the side span is 3m, and the full bridge has 98 internodes in total.
The upper chord member 1 and the lower chord member 2 are rectangular sections, the vertical web members 3, the inclined web members 4, the upper flat longitudinal links 7 and the lower flat longitudinal links 8 are all circular sections, the section of the steel pipe truss girder is in a spatial rectangular shape, and the upper flat longitudinal links 7 and the lower flat longitudinal links 8 respectively and sequentially and alternately appear in a corresponding plane according to a certain angle. All steel pipe materials adopt Q345qThe steel, upper and lower parallel longitudinals appear alternately in the same angle in the corresponding plane. The main beam adopts a double-layer steel truss, the side length of the chord member is 400mm, the wall thickness is 16mm, the outer diameter of the web member is 200mm, the wall thickness is 10mm, the outer diameter of the upper and lower horizontal longitudinal connection and the end transverse connection is 200mm, and the wall thickness is 12 mm; the height of the steel truss girder is 3.0m, the ratio H/L of the height of the steel truss girder to the main span is 1/63.3, the width of the steel truss girder is 3m, and the ratio B/L of the width of the girder to the main span is 1/63.3.
The steel pipe truss girder is manufactured by sections in a factory and is pre-assembled. Iron sand concrete 6 is poured into the upper chord 1, the lower chord 2, the inclined web members 4, the end transverse connection 5 and the vertical web members 3 in the whole side span range, and concrete is not poured into the upper flat longitudinal connection 7 and the lower flat longitudinal connection 8. Two upper chords 1, two lower chords 2, each vertical web member 3, each inclined web member 4 and each end cross-connection 5 in the midspan steel pipe truss main beam 11 are filled with iron-sand concrete 6 in a span negative moment range.
The steel pipe truss girder adopts on-site concrete pouring, holes are respectively formed in the chord members, the web members and the end cross links of the steel pipe truss girder, water is sprinkled into the holes before the iron sand concrete 6 is poured, when the on-site temperature and humidity are proper, the water is pumped out before the iron sand concrete 6 is poured, after the strength of the iron sand concrete 6 is increased and meets the standard requirements, the holes are respectively repaired in the chord members, the web members and the end cross links of the side span steel pipe truss girder, and coating protection measures are carried out. And by adopting a method of sprinkling water to the inside of the end transverse connection, the chord member and the web member, the hydration heat effect generated in the concrete pouring process is reduced, and the construction quality is ensured. The side span and the mid-span hogging moment range chord member, the end cross-linking and the web members are filled with iron sand concrete, the built-in concrete mode helps the steel pipe to resist axial pressure, the hoop effect is obvious, the instability damage of the structure in the operation period can be reduced, and the integral bearing capacity and the fatigue life of the steel pipe are improved.
The construction method of the self-anchored pipeline suspension bridge comprises the following steps:
s1, calculating upper and lower chords, upper and lower horizontal longitudinal connections, end transverse connections and web members with corresponding sizes of finished products for segment manufacturing or purchasing in a factory according to the internal force of a suspension bridge structure;
s2, assembling and welding the complete set of web members, chords, upper and lower horizontal longitudinal links and the like into a whole according to the bearing capacity and the transportation condition, and performing nondestructive testing on all welding seams after welding is completed;
s3, loading sections of the double-layer steel pipe truss main beams, transporting the sections to a bridge site, then carrying out secondary splicing and welding, hoisting the double-layer steel pipe truss main beams to a temporary bridge opening support through large crane sections, and splicing and welding to form a whole full-bridge structure;
s4, pouring iron sand concrete into the end cross-links, the upper chord, the lower chord, the inclined web members and the vertical web members of the steel pipes in the negative bending moment range of the whole side span and the middle span close to the main tower respectively, and simultaneously fully vibrating;
s5, erecting main cables, installing cable clamps, and then stretching suspenders (system conversion) from the anchoring ends of the cables to the main towers and from the midspan to the main towers at two sides according to the sequence of side-to-side spanning and midspan, so that the line shape and the stress of a bridge meet the design requirements, and the weight of the steel truss girder is transferred to the main cables from the temporary support to bear;
and S6, carrying out bridge auxiliary structure construction.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A self-anchored steel pipe truss girder of a pipeline suspension bridge is characterized in that the steel pipe truss girder comprises a side span steel pipe truss girder (10) and a middle span steel pipe truss girder (11), the side span steel pipe truss girder (10) and the mid span steel pipe truss girder (11) both comprise two upper chords (1) and two lower chords (2), the two upper chords (1) are located in the same plane and are arranged oppositely and parallelly, the two ends of the two upper chords (1) are connected through an end cross-link (5), the two lower chords (2) are located in the same plane and are arranged oppositely and parallelly, the two ends of the two lower chords (2) are connected through the end cross-link (5), one lower chord (2) is positioned right below one upper chord (1) and arranged in parallel, and the other lower chord (2) is positioned right below the other upper chord (1) and arranged in parallel; one lower chord (2) is connected with one upper chord (1) through a plurality of vertical web members (3) and a plurality of diagonal web members (4), and the other lower chord (2) is connected with the other upper chord (1) through a plurality of vertical web members (3) and a plurality of diagonal web members (4);
iron sand concrete (6) is filled in the two upper chords (1), the two lower chords (2), each vertical web member (3), each inclined web member (4) and each end cross joint (5) of the side-span steel pipe truss main beam (10);
two of midspan steel pipe truss girder (11) go up chord member (1) and two the position that is close to in lower chord member (2) midspan steel pipe truss girder (11) both ends is filled with iron sand concrete (6), a plurality of on midspan steel pipe truss girder (11) be close to its both ends erect web member (3) and a plurality of diagonal web member (4) intussuseption is filled with iron sand concrete (6), every of midspan steel pipe truss girder (11) end cross-under (5) intussuseption is filled with iron sand concrete (6).
2. A self-anchored pipeline suspension bridge steel pipe truss girder according to claim 1, wherein two upper chords (1) are connected by a plurality of upper flat longitudinal links (7), and two lower chords (2) are connected by a plurality of lower flat longitudinal links (8).
3. A self-anchored pipeline suspension bridge steel pipe truss girder according to claim 2, wherein a plurality of said upper flat longitudinals (7) between two said upper chords (1) are connected in sequence at an angle, and a plurality of said lower flat longitudinals (8) between two said lower chords (2) are connected in sequence at an angle.
4. The steel pipe truss girder of a self-anchored pipeline suspension bridge as claimed in claim 2, wherein the upper chord (1), the lower chord (2), the vertical web members (3), the diagonal web members (4), the end cross-links (5), the upper horizontal longitudinal links (7) and the lower horizontal longitudinal links (8) are all seamless steel pipes.
5. A steel pipe truss girder for a self-anchored pipeline suspension bridge according to claim 1, wherein two upper chords (1) and two lower chords (2) are respectively connected with a breast board (9).
6. The steel pipe truss girder of a self-anchored pipeline suspension bridge according to claim 1, wherein a plurality of vertical web members (3) between one lower chord (2) and one upper chord (1) and a plurality of vertical web members (3) between the other lower chord (2) and the other upper chord (1) are uniformly distributed.
7. A self-anchored pipeline suspension bridge steel pipe truss girder according to claim 6, wherein one of said diagonal web members (4) is connected between two adjacent vertical web members (3), one end of said diagonal web member (4) is connected to the upper end of one vertical web member (3), and the other end of said diagonal web member (4) is connected to the lower end of the other vertical web member (3).
8. A self-anchored pipeline suspension bridge, characterized in that the side span steel pipe truss girder (10) and the mid span steel pipe truss girder (11) of the self-anchored pipeline suspension bridge are respectively provided with the side span steel pipe truss girder (10) and the mid span steel pipe truss girder (11) according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120375947.6U CN214530201U (en) | 2021-02-18 | 2021-02-18 | Self-anchored pipeline suspension bridge steel pipe truss girder and self-anchored pipeline suspension bridge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116607417A (en) * | 2023-04-13 | 2023-08-18 | 中铁大桥局集团第二工程有限公司 | Synchronous erection device for straddle type track beam and maintenance channel and construction method thereof |
| CN119640667A (en) * | 2024-12-23 | 2025-03-18 | 中国船舶重工集团应急预警与救援装备股份有限公司 | A pipeline bridge |
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- 2021-02-18 CN CN202120375947.6U patent/CN214530201U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116607417A (en) * | 2023-04-13 | 2023-08-18 | 中铁大桥局集团第二工程有限公司 | Synchronous erection device for straddle type track beam and maintenance channel and construction method thereof |
| CN116607417B (en) * | 2023-04-13 | 2023-12-29 | 中铁大桥局集团第二工程有限公司 | Synchronous erection device for straddle type track beam and maintenance channel and construction method thereof |
| CN119640667A (en) * | 2024-12-23 | 2025-03-18 | 中国船舶重工集团应急预警与救援装备股份有限公司 | A pipeline bridge |
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