CN112195747A - Double-line track beam supporting system suitable for suspended monorail and construction method - Google Patents
Double-line track beam supporting system suitable for suspended monorail and construction method Download PDFInfo
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- CN112195747A CN112195747A CN202010992103.6A CN202010992103A CN112195747A CN 112195747 A CN112195747 A CN 112195747A CN 202010992103 A CN202010992103 A CN 202010992103A CN 112195747 A CN112195747 A CN 112195747A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D1/00—Bridges in general
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
本发明提供了一种适用于悬挂式单轨的双线轨道梁支撑体系，包括两线并排布置的轨道梁，两线轨道梁之间且位于轨道梁端部设置有桥墩和横梁，桥墩顶部设有墩顶盖梁，横梁底部通过支座支撑于桥墩的墩顶盖梁上，横梁的两端分别与两线轨道梁的侧面连接为整体。另外，本发明还提供了该双线轨道梁支撑体系的施工方法。该发明在满足车辆行车要求的前提下，将双线轨道梁通过横梁连接为整体，由常规的单线梁转换为双线梁，并将墩顶盖梁置于两轨道梁之间，有效减小了桥墩高度，改善了轨道梁和桥墩结构受力与稳定性，同时对轨道梁及桥墩材料的利用更加充分，可大幅节省钢材用量，且施工简单，后期养护维修便捷，经济技术效益明显。
The invention provides a double-track rail beam support system suitable for a suspended monorail, comprising two rail beams arranged side by side, a bridge pier and a cross beam are arranged between the two-line track beams and at the end of the rail beam, and the top of the bridge pier is provided with a bridge pier and a cross beam. The pier top cover beam, the bottom of the cross beam is supported on the pier top cover beam of the bridge pier through the support, and the two ends of the cross beam are respectively connected with the side surfaces of the two-line track beam as a whole. In addition, the present invention also provides a construction method of the double-track rail beam support system. Under the premise of meeting the requirements of vehicle driving, the invention connects the double-track rail beams as a whole through the cross beam, converts the conventional single-line beam into a double-line beam, and places the pier top cover beam between the two track beams, which effectively reduces the The height of the bridge pier is increased, the stress and stability of the track girder and the bridge pier structure are improved, and the material of the track girder and the bridge pier is more fully utilized, which can greatly save the amount of steel, and the construction is simple, the later maintenance is convenient, and the economic and technical benefits are obvious.
Description
Technical Field
The invention belongs to the technical field of suspended monorail, and particularly relates to a double-line track beam supporting system suitable for a suspended monorail and a construction method.
Background
The common supporting system of the existing suspension type monorail mainly comprises a bolt type supporting system and a supporting seat type supporting system.
The bolt type supporting body is used for suspending the track beams on two sides of a double-line bridge section on two sides of a pier capping beam through a T-shaped pier by using a bolt type supporting body system through a hanging plate. In actual use, the upper hanging plate of the track beam and the upper hanging plate of the cover beam are connected with the main body of the track beam through welding, and due to the fact that the track beam and the cover beam are in a suspension state, the stress of a welding line is uneven, the situation of large local stress can occur, and the fatigue problem is obvious. In addition, the bolt type connection can be successfully connected only by meeting the requirement of the bolt hole correspondence of the hanging plate, the installation adjustable range is very small, and the requirement on the processing level of a steel structure is high.
The support type supporting system is characterized in that a hanging box and a bracket are arranged below a T-shaped pier capping beam and on two sides of a track beam, a support is arranged above the bracket, and the track beam is supported on the support. In actual use, though the bolt type support fatigue problem and the machining precision problem are solved, in order to provide enough support rigidity, a hanging box structure with higher rigidity is needed, and the using amount of a steel structure is increased.
The rail beam is arranged below the T-shaped pier in an overhanging mode through a conventional bolt type and support type supporting system, the pier and the capping beam need to be higher than the rail beam, the attractiveness is poor, the pier height is high, and the pier top deformation is large. In addition, the track beams on the two sides are not connected and are of independent structures, the transverse deformation resistance is weak, the transverse deformation of the curve section is large, and the driving comfort is poor.
Disclosure of Invention
The object of the present invention is to provide a support system for a twin line track beam suitable for use in suspended monorail, which solves at least some of the above-mentioned drawbacks of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a double-line track roof beam supports system suitable for suspension type single track, includes the track roof beam that two lines were arranged side by side, two lines just be located track beam tip between the track roof beam and be provided with pier and crossbeam, the pier top is equipped with mound top cap roof beam, the crossbeam bottom is supported on the mound top cap roof beam of pier through the support, the both ends of crossbeam are connected as whole with the side of two line track roof beams respectively.
Further, the upper edge of the cross beam is flush with the upper edge of the track beam.
Furthermore, an inner side box is additionally arranged in the beam range of the track beam close to the beam end, and the end part of the beam is connected with the inner side box.
Furthermore, the pier is a T-shaped pier, the pier body of the pier is positioned between the two lines of the track beams, and the edge of the pier body does not invade a vehicle limit hung on the track beams.
Further, the pier top cover beam is arranged in the lower half space between the two line track beams, and the lower edge of the end part of the pier top cover beam is flush with the lower edge of the track beam and does not intrude into a vehicle limit hung on the track beam.
Furthermore, the crossbeam adopts the steel box type cross-section structure of compriseing web, roof, bottom plate, stiffening rib, the stiffening rib position sets up directly over the support.
Furthermore, the beam is longitudinally divided into two half beams by the middle position of the two-line track beam, and the two half beams are spliced into a whole through the connecting component.
Furthermore, the connecting assembly comprises splicing plates and high-strength bolts, and hand holes are formed in the splicing positions of the two half cross beams.
Furthermore, a group of cross beams or two groups of cross beams arranged side by side are arranged on the pier top capping beam of the pier.
In addition, the invention also provides a construction method of the double-line track beam supporting system suitable for the suspended monorail, which comprises the following steps:
1) constructing a pier and a pier top capping beam on site;
2) prefabricating a track beam and a cross beam in a factory, wherein the cross beam is prefabricated in two halves, an assembling site is reserved at one end part of each of the two half cross beams, the track beam and the corresponding half cross beam are welded at the end part far away from the assembling site, and the upper edge of the cross beam is flush with the upper edge of the track beam;
3) and installing a support on the pier top capping beam, hoisting the track beam to two sides of the pier, and bolting and assembling two corresponding half cross beams on the track beams on the two sides, so that the construction of the double-line track beam support system is completed.
Compared with the prior art, the invention has the beneficial effects that:
(1) the double-line track beam supporting system suitable for the suspended single track, provided by the invention, connects originally separated track beams into a whole through the cross beam, converts the conventional mutually independent single-line beams into double-line beams, improves the lateral rigidity, has larger transverse spacing of the support, has better stability of the main beam, and improves the driving comfort; meanwhile, the pier does not need to be higher than the rail beam and extend out of the cantilever, and the pier top cover beam is arranged below the cross beam, so that the structural height of the pier is reduced, the material performance is fully exerted, the material consumption is reduced, and the attractiveness is improved.
(2) The adjustable support is adopted between the cross beam and the pier in the double-line track beam supporting system suitable for the suspended monorail, the adjustable support is suitable for settlement and deformation generated in the operation period, the support can be lifted and replaced, the bolt connection of the cross beam can be removed, the track beam can be replaced, and the maintenance is convenient; and the double-line track beam supporting system is applicable to track beams with simple supporting structures and continuous structures, and the structural design is flexible and variable.
(3) The double-line track beam supporting system suitable for the suspended monorail provided by the invention has the advantages that in the construction process, all welding operations of the cross beam can be carried out in a factory, only high-strength bolts are needed for connection in site construction, the installation and construction are simple, and the quality is easy to ensure.
The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic cross-sectional structural view of a two-wire track beam support system of the present invention;
FIG. 2 is a schematic view of a connection structure of a track beam and a cross beam according to the present invention;
FIG. 3 is a schematic diagram of a two-line track beam support system elevation layout suitable for use in a simple beam structural system in an embodiment of the present invention;
FIG. 4 is a schematic illustration of a two-line track beam support system elevation layout suitable for use in a continuous beam structural system in an embodiment of the present invention;
fig. 5 is a schematic view of the structure of the inside side box in the embodiment of the present invention.
Description of reference numerals: 1. a bridge pier; 2. a pier top capping beam; 3. a track beam; 4. a support; 5. an inside side box; 6. a cross beam; 7. a high-strength bolt; 8. splicing plates; 9. hand hole; 10. a top plate; 11. a web; 12. a stiffening rib; 13. a base plate; 14. a track beam stiffener; 15. a beam top plate; 16. a web; 17. a diaphragm plate; 18. a projection; 19. and a beam bottom plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1, the present embodiment provides a double-line track beam support system suitable for suspended monorail, including two line track beams 3 that arrange side by side, two line between the track beam 3 and be located track beam 3 tip and be provided with pier 1 and crossbeam 6, pier 1 top is equipped with mound top bent cap 2, crossbeam 6 bottom supports on pier 1's mound top bent cap 2 through support 4, the both ends of crossbeam 6 are connected as an organic whole with two line track beam 3's side respectively, and is optimized, can with the design arrangement that the upper edge of crossbeam 6 flushes with track beam 3 upper edge. In the embodiment, originally separated two-line track beams 3 are connected into a whole through a cross beam 6, the two-line track beams are converted into a double-line beam through a conventional mutually independent single-line beam, and a support 4 is arranged below the cross beam 6 and supported on a pier top cover beam 2 of a pier 1, so that a load transmission path on the track beam 3 is the cross beam 6-the support 4-the pier top cover beam 2, the lateral rigidity of the double-line track beam structure is improved, and the driving comfort is improved; meanwhile, the pier 1 of the embodiment does not need to be higher than the track beam 3 and stretches out and overhangs, the pier top capping beam 2 is arranged below the cross beam 6, the structural height of the pier 1 is reduced, the steel consumption is greatly saved, and the attractiveness is improved.
The utility model provides an embodiment of optimizing, track roof beam 3 has increased inboard limit case 5 near the crossbeam within range of beam-ends, 6 tip of crossbeam with inboard limit case 5 is connected, and through this inboard limit case 5's design, can transmit the load of track roof beam 3 for crossbeam 6 more evenly and smoothly, further obviously promotes track roof beam's wholeness.
In a specific embodiment, as shown in fig. 5, the inner side box 5 is composed of a beam top plate 15 and a beam bottom plate 19 of the track beam 3, and two beam webs 16 arranged in parallel and at intervals between the beam top plate 15 and the beam bottom plate 19 of the track beam 3, and the beam webs 16 and the beam top plate 15 and the beam top plate 19 of the track beam 3 enclose to form a box side chamber, which is a closed structure and can form closed shear flow, so that the track beam 3 can form closed shear flow when being stressed, and therefore, the box side chamber has large torsional rigidity.
Preferably, a transverse partition plate 17 is arranged in the side box chamber of the inner side box 5, and the transverse partition plate 17 is vertically connected with the two beam webs 16 of the side box chamber in an intersecting manner; it can be understood that the plate surface of the transverse partition plate 17 is vertical to the longitudinal direction of the track, wherein, preferably, a plurality of transverse partition plates 17 are arranged in the side box chamber, the transverse partition plates 17 are sequentially arranged at intervals along the longitudinal direction of the track, and the structural integrity of the side box zone and the stability and reliability of force transmission can be improved by additionally arranging the transverse partition plates 17. Furthermore, the upper end and the lower end of the diaphragm 17 are respectively connected with the beam top plate 15 and the beam bottom plate 19, so that the structural strength and the rigidity of the track beam 3 are further improved.
The bulkhead 17 is preferably attached by welding to the two web plates 16, the roof plate 15, and the floor plate 19. In one embodiment, the transverse end of the diaphragm 17 close to the transverse beam 6 side is provided with a protruding part 18, and the protruding part 18 is arranged on the corresponding beam web 16 in a penetrating way and welded with the beam web 16; the height of the protruding portion 18 is preferably smaller than that of the diaphragm 17, and the web 16 is provided with a through groove of corresponding height to allow the protruding portion 18 to pass through. Based on above-mentioned structure, on the one hand through the trough-penetrating cooperation on bulge 18 and the web 16, make things convenient for the cross slab 17 and correspond counterpoint between the web 16 and assemble, on the other hand can adopt the outer welded mode of case, easy operation is convenient to can guarantee welding quality. Specifically, during processing and manufacturing, the diaphragm plate 17, the beam top plate 15, the beam bottom plate 19 and one of the beam webs 16 (i.e. the beam web 16 far away from the beam 6) are welded together, then the other beam web 16 is inserted on the diaphragm plate 17 in a manner that the protruding parts 18 and the through grooves are mutually inserted, and then the beam is welded outside the box to form a complete beam section.
In a detailed embodiment, the pier 1 is a T-shaped pier, the pier body of which is located between the two lines of the track beam 3, and the edge of the pier body does not intrude into the limit of the vehicle suspended on the track beam 3. The pier top cover beam 2 is arranged in the lower half part space between the two line track beams 3, and the lower edge of the end part of the pier top cover beam 2 is flush with the lower edge of the track beam 3 and does not intrude into the limit of a vehicle hung on the track beam 3; this structural design makes crossbeam 6+ mound top bent cap 2 structure not higher than 3 cross-sections of track roof beam, has guaranteed the continuity of 3 outward appearances of track roof beam, is favorable to increasing the permeability of view.
Specifically, as shown in fig. 2, the cross beam 6 has a steel box-shaped cross section structure composed of a web 11, a top plate 10, a bottom plate 13 and a stiffening rib 12, the stiffening rib 12 is arranged right above the support 4, and the cross beam 6 and the inner side box 5 of the track beam 3 form an integral structure, so that the lateral rigidity of the double-track beam structure is further ensured.
Further, for the convenience of transportation, can be with crossbeam 6 design for assembling the structure, a concrete implementation mode, will crossbeam 6 is vertically divided into two halves crossbeams by the intermediate position of two line track roof beams 3, and two halves crossbeams are spliced as whole through coupling assembling between the crossbeam, can make half a crossbeam synchronous when unilateral track roof beam mill makes like this, and it can to be whole through the coupling assembling concatenation of setting up in the middle of crossbeam 3 during site operation with two halves crossbeams. Specifically, the connecting assembly comprises a splicing plate 8 and a high-strength bolt 7, the two half cross beams are connected into a whole by the high-strength bolt 7 and the splicing plate 8, and meanwhile, hand holes 9 are formed in the splicing positions of the two half cross beams so as to facilitate screwing of the high-strength bolt 7.
In addition, the track beam 3 adopts a thin-wall section structure with an opening at the lower edge, and track beam stiffening ribs 14 are arranged on the track beam 3. The supports 4 between the cross beam 6 and the bridge pier 1 are positioned at two ends of the bridge pier 1, so that the transverse distance between the supports 4 is increased as much as possible, and the stability of the main beam is improved; optimized, support 4 adopts the adjustable support of three-dimensional to the settlement, the deformation that produce during the adaptation operation can be lifted simultaneously and change support 4, also can remove the bolted connection of crossbeam 6 and realize that track roof beam 3 changes, and the maintenance is maintained conveniently. The double-line track beam supporting system of this embodiment can adjust 3 spatial position of track roof beam through two kinds of means, firstly utilizes 6 bolted connection of crossbeam to realize the regulation in certain precision range of construction period, secondly adopts three-dimensional adjustable support to realize the beam body form adjustment of construction period and operation stage, and the construction precision requirement is lower relatively, and operation period maintenance is convenient.
As shown in fig. 3 and 4, for the track beam of the simple support structure and the track beam of the continuous structure, the structure of the support system can be adjusted accordingly, that is, for the simple support structure, two groups of cross beams 6 are arranged on the pier top capping beam 2 of the pier 1 side by side, and for the continuous structure, a group of cross beams 6 are arranged on the pier top capping beam 2 of the pier 1, and correspondingly, the pier 1 can be longitudinally widened according to the structure type of the track beam 3 to meet the requirement of the placement space of the support 4.
The embodiment also provides a construction method of the double-line track beam supporting system suitable for the suspended monorail, so that the bridge structure can be welded and manufactured in a factory, the construction precision and the quality are easy to control by only hoisting and bolting operation on the site, and the specific process is as follows:
first, the pier 1 and the pier coping beam 2 are constructed on site.
Then, the track beam 3 and the cross beam 6 are prefabricated in a factory synchronously, the cross beam 6 is prefabricated in two halves, an assembling site is reserved at one end part of each of the two halves of the cross beam, the track beam 3 and the end part, far away from the assembling site, of the corresponding half of the cross beam are welded, and the upper edge of the cross beam 6 is flush with the upper edge of the track beam 3.
And finally, installing a support 4 on the pier top cover beam 2, transporting the track beam 3 and the cross beam 6 to a construction site, hoisting the two side beams to the two sides of the pier 1, respectively supporting the two half cross beams on the supports 4 at the two ends of the pier top cover beam 2, and bolting and assembling the two half cross beams corresponding to the two side track beams 3, thereby completing the construction of the double-line track beam supporting system. In the process, the track beam 3 can be integrally hoisted or the cross beam 6 can be spliced after being hoisted in a split mode, and the construction is flexible and the operation is simple.
The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the invention, which is intended to be covered by the claims and any design similar or equivalent to the scope of the invention.
Claims (10)
1. A two-wire track beam support system suitable for a suspended monorail, comprising a track beam with two wires arranged side by side, characterized in that: two lines just be located between the track roof beam and the track roof beam tip is provided with pier and crossbeam, the pier top is equipped with mound top cap roof beam, the crossbeam bottom supports on the mound top cap roof beam of pier through the support, the both ends of crossbeam are connected as an organic whole with the side of two line track roof beams respectively.
2. A twin line track beam support system for a suspended monorail, as defined in claim 1, wherein: the upper edge of the cross beam is flush with the upper edge of the track beam.
3. A twin line track beam support system for a suspended monorail, as defined in claim 1, wherein: the rail beam is additionally provided with an inner side box in the beam range close to the beam end, and the end part of the beam is connected with the inner side box.
4. A twin line track beam support system for a suspended monorail, as defined in claim 1, wherein: the pier is T-shaped pier, the pier body is positioned between the two lines of the track beams, and the edge of the pier body does not invade the limit of the vehicles hung on the track beams.
5. A twin line track beam support system for a suspended monorail, as defined in claim 1, wherein: the pier top cover beam is arranged in the lower half portion space between the two line track beams, and the lower edge of the end portion of the pier top cover beam is flush with the lower edge of the track beam and does not intrude into a vehicle limit suspended on the track beam.
6. A twin line track beam support system for a suspended monorail, as defined in claim 1, wherein: the crossbeam adopts the steel box type cross-section structure of compriseing web, roof, bottom plate, stiffening rib, the stiffening rib position sets up directly over the support.
7. A twin line track beam support system for a suspended monorail, as defined in claim 1, wherein: the beam is longitudinally divided into two half beams by the middle position of the two-line track beam, and the two half beams are spliced into a whole through the connecting assembly.
8. A twin line track beam support system for a suspended monorail, as defined in claim 7, wherein: the connecting assembly comprises splicing plates and high-strength bolts, and hand holes are formed in the splicing positions of the two half cross beams.
9. A twin line track beam support system for a suspended monorail, as defined in claim 1, wherein: and a group of cross beams or two groups of cross beams arranged side by side are arranged on the pier top capping beam of the pier.
10. A method of constructing a twin line track beam support system for a suspended monorail as defined in any one of claims 1 to 9, including the steps of:
1) constructing a pier and a pier top capping beam on site;
2) prefabricating a track beam and a cross beam in a factory, wherein the cross beam is prefabricated in two halves, an assembling site is reserved at one end part of each of the two half cross beams, the track beam and the corresponding half cross beam are welded at the end part far away from the assembling site, and the upper edge of the cross beam is flush with the upper edge of the track beam;
3) and installing a support on the pier top capping beam, hoisting the track beam to two sides of the pier, and bolting and assembling two corresponding half cross beams on the track beams on the two sides, so that the construction of the double-line track beam support system is completed.
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Cited By (3)
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| CN112942053A (en) * | 2021-02-07 | 2021-06-11 | 中铁四局集团有限公司 | Bolt type steel box girder and manufacturing method thereof |
| CN113584965A (en) * | 2021-03-04 | 2021-11-02 | 中铁宝桥集团有限公司 | Suspended single-rail large-span track-turnout combined structure and method |
| CN114134765A (en) * | 2021-11-26 | 2022-03-04 | 中铁第四勘察设计院集团有限公司 | Track beam supporting system and installation method |
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| CN213836253U (en) * | 2020-09-21 | 2021-07-30 | 中铁第四勘察设计院集团有限公司 | Double-line track beam supporting system suitable for suspended monorail |
Cited By (4)
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| CN112942053A (en) * | 2021-02-07 | 2021-06-11 | 中铁四局集团有限公司 | Bolt type steel box girder and manufacturing method thereof |
| CN113584965A (en) * | 2021-03-04 | 2021-11-02 | 中铁宝桥集团有限公司 | Suspended single-rail large-span track-turnout combined structure and method |
| CN114134765A (en) * | 2021-11-26 | 2022-03-04 | 中铁第四勘察设计院集团有限公司 | Track beam supporting system and installation method |
| CN114134765B (en) * | 2021-11-26 | 2024-06-07 | 中铁第四勘察设计院集团有限公司 | Rail beam supporting system and installation construction method |
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