CN107988857B - Straddle type monorail semi-fixed continuous beam - Google Patents
Straddle type monorail semi-fixed continuous beam Download PDFInfo
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- CN107988857B CN107988857B CN201711215212.1A CN201711215212A CN107988857B CN 107988857 B CN107988857 B CN 107988857B CN 201711215212 A CN201711215212 A CN 201711215212A CN 107988857 B CN107988857 B CN 107988857B
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- fixed
- track
- support
- semi
- straddle type
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B25/00—Tracks for special kinds of railways
- E01B25/08—Tracks for mono-rails with centre of gravity of vehicle above the load-bearing rail
- E01B25/10—Mono-rails; Auxiliary balancing rails; Supports or connections for rails
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
The invention discloses a straddle type single-rail semi-fixed continuous beam, which comprises a track beam (1), a bridge pier (2), a foundation (3) and a cast-in-situ belt (7), wherein a plurality of adjacent track beams (1) are connected into a beam section through the cast-in-situ belt (7), a beam seam (4) is arranged between the track beam (1) of a beam Duan Liangduan and the adjacent track beam (1), the track beam is separately fixed on the bridge pier (2), a movable support (5) is arranged under the beam Duan Yiduan, a fixed support (6) is arranged at the other end of the track beam, fixed supports (6) are arranged under the track beam (1) of the beam Duan Zhongjian, and height adjusting studs (508) are arranged in the movable support (5) and the fixed support (6). According to the straddle type monorail semi-fixed continuous beam, the movable support increases the linear adjustability of the track beam, the fixed support increases the track rigidity, and the longitudinal direction of the heightening stud can be continuously adjusted.
Description
Technical Field
The invention belongs to the technical field of rail transit bridge structures, and particularly relates to a straddle type monorail semi-fixed continuous beam.
Background
A straddle type monorail refers to a railway in which a car body rides on a rail beam by being supported, stabilized and guided by a single track. The straddle type monorail has the characteristics of strong adaptability, low noise, small turning radius and very strong climbing capacity.
The structural system adopted by the straddle type monorail track beam mainly comprises: simply supported beams, continuous beams and continuous rigid frames. The simple support beam is of a statically determinate structure, referring to fig. 1, the stress is simple, the line shape can be adjusted according to the situation, and the field work load is reduced due to the fact that no cast-in-situ section exists in the structure; the continuous beam is of a statically indeterminate structure, as shown in fig. 2, the overall rigidity is higher, the spanning energy is stronger than that of a simply supported beam, the structural joints are fewer, and the travelling comfort is better; the continuous rigid frame side pier also has a cast-in-place section, the overall stiffness is greater than that of the continuous beam, see fig. 3.
However, all three structural systems have drawbacks: the simple beam has small rigidity, poor integrity and spanning capability, more structural joints cause travelling comfort intersection, more supports, complex linear adjustment and larger maintenance workload; the continuous beam is added with the pier top cast-in-situ section, but the overall rigidity of the structure is poorer than that of a continuous rigid frame, the fixed pier bears a longitudinal force of one link, and the structural size of the pier is larger; pier stud and track roof beam rigid connection in the continuous rigid frame, if meet the deformation such as bridge subsidence when the unreliability factor in the operation, can't adjust the linearity, change the track roof beam with great costs, consuming time.
Disclosure of Invention
Aiming at the defects or improvement demands of the prior art, the invention provides a straddle type single-rail semi-fixed continuous beam, wherein cast-in-situ belts are arranged in part of beam seams, so that the number of the beam seams is reduced, and the travelling comfort of a train is improved; the lower ends of the semi-fixed continuous beam cast-in-situ belts are all provided with fixed supports, and the structure solves the problem that the bridge pier at the lower ends of the fixed supports of the continuous beams is large in size; the movable supports are arranged at certain intervals, so that the defect that continuous rigid frames cannot be adjusted in the operation period is overcome. The movable support and the fixed support are both provided with the heightening studs, so that the longitudinal stress of the support is more uniform, and the continuous adjustment of the vertical height of the track beam can be realized.
In order to achieve the above purpose, the invention provides a straddle type monorail semi-fixed continuous beam, which comprises a track beam, a pier, a foundation and a cast-in-situ belt, and is characterized in that the pier is arranged on the foundation, the track beam is arranged on the pier in a segmented manner, and a plurality of adjacent track beams are connected into a beam section through the cast-in-situ belt;
a beam seam is arranged between the track beam of the beam Duan Liangduan and the adjacent track beam and is separately fixed on the bridge pier, a movable support is arranged below the beam Duan Yiduan and used for increasing the linear adjustability of the track beam, a fixed support is arranged at the other end of the beam, and the fixed supports are arranged below the track beam of the beam Duan Zhongjian and used for enabling the bridge pier to be uniformly stressed so as to reduce the size of the bridge pier;
the movable support and the fixed support are respectively provided with a lower seat plate and a bottom plate, the lower end of the lower seat plate is provided with a cylindrical hole, the inner wall of the cylindrical hole is provided with a threaded structure, the lower end of the height-adjusting stud is arranged on the bottom plate, the upper end of the height-adjusting stud is arranged in the cylindrical hole and used for uniformly transmitting the force on the track beam to the bridge pier through the height-adjusting stud so as to improve the overall stress uniformity of the support, and the height-adjusting stud is connected with the threads on the inner wall of the cylindrical hole in a matched manner and used for rotating the height-adjusting stud to realize stepless adjustment of the track in the longitudinal direction.
Further, the movable support with the fixed support still includes bedplate, well bedplate and bedplate, it is equipped with the opening to go up the bedplate bottom, well bedplate is located in the opening, well bedplate is equipped with down the bedplate down, lower bedplate upper end buckle is in the opening of bedplate, the one end of well bedplate is horizontal structure, and the other end is the convex cylinder structure, down the bedplate with the adjacent one side of well bedplate is equipped with concave cylinder structure, horizontal structure with the bedplate inboard all is equipped with the plane slider for realize the horizontal slip of roof beam body, convex cylinder structure with concave cylinder structure is last all to be equipped with the cylinder slider.
Further, a fastening structure is arranged between the lower seat board and the upper seat board, and a rotating sliding block is arranged in the fastening structure.
Further, a limiting block is arranged in the fixed support, and the limiting block is arranged on the lower seat plate.
Further, the upper surface of bottom plate is equipped with the mechanism of preventing leaning on, the mechanism bottom of preventing leaning on is fixed on the surface of bottom plate, prevent leaning on the structure top and locate in the lower bedplate.
Further, a spanner hole is formed in the height-adjusting stud.
In general, the above technical solutions conceived by the present invention, compared with the prior art, enable the following beneficial effects to be obtained:
(1) According to the straddle type monorail semi-fixed continuous beam, the cast-in-situ belts are arranged in part of beam seams, so that the number of beam seams is reduced, and the travelling comfort of a train is improved; the lower ends of the semi-fixed continuous beam cast-in-situ belts are all provided with fixed supports, and the structure solves the problem that the bridge pier at the lower ends of the fixed supports of the continuous beams is large in size; the movable supports are arranged at certain intervals, so that the defect that continuous rigid frames cannot be adjusted in the operation period is overcome.
(2) According to the straddle type monorail semi-fixed continuous beam, the height-adjusting studs are adopted in both the movable support and the fixed support, so that the longitudinal stress of the support is more uniform, and the vertical height of the rail beam can be continuously adjusted.
(3) According to the straddle type monorail semi-fixed continuous beam, the movable support and the fixed support adopt the horizontal sliding block cylindrical surface sliding block and the rotary sliding block, so that the horizontal position adjustment is smoother, the plane sliding block on the upper seat plate and the plane sliding block on the horizontal structure form a plane friction pair together, and the horizontal sliding of the beam body is realized.
Drawings
FIG. 1 is a schematic diagram of a three-span simply supported beam in the prior art;
FIG. 2 is a schematic diagram of a prior art three-span one-link continuous beam structure;
FIG. 3 is a schematic diagram of a prior art three-span one-joint continuous steel structure;
FIG. 4 is a schematic view of a straddle type monorail semi-fixed continuous beam according to an embodiment of the present invention;
FIG. 5 is a front view of the cradle;
FIG. 6 is a side view of the cradle;
FIG. 7 is a front view of the stationary mount;
fig. 8 is a side view of the stationary support.
In the drawings, like reference numerals designate like structures and elements throughout the several views, wherein: 1-track beams, 2-piers, 3-foundations, 4-beam joints, 5-movable supports, 6-fixed supports, 7-cast-in-situ belts, 8-movable supports and 9 fixed supports;
501-upper seat board, 502-plane slide block, 503-middle seat board, 504-cylindrical surface slide block, 505-rotating slide block, 506-lower seat board, 507-tilting prevention mechanism, 508-height adjusting stud, 509-bottom board, 510-position adjusting gasket, 511-base board and 512-tensile anchor bolt;
613-limiting blocks.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Fig. 4 is a schematic structural view of a straddle type monorail semi-fixed continuous beam according to an embodiment of the present invention. Taking a three-span one-joint unit as an example for explanation, the straddle type single-rail semi-fixed continuous beam comprises a track beam 1, bridge piers 2, a foundation 3, beam joints 4, a movable support 5, a fixed support 6 and a cast-in-situ belt 7, wherein the foundation 3 is arranged at the same distance every interval, the bridge piers 2 are arranged on the foundation 3, the track beam 1 is arranged on the bridge piers 2, the bridge piers 2 are used for bearing the longitudinal force of the track beam 1 to play a role in supporting the track beam 1, the beam joints 4 are arranged between two adjacent track beams 1, a support is arranged between the track beam 1 and the bridge piers 2, and the support comprises the movable support 5 and the fixed support 6. Two beam seams 4 are arranged between three adjacent track beams, wherein cast-in-situ belts 7 are filled in the beam seams to connect the three disconnected track beams 1 into a beam section, so that the overall rigidity and integrity are enhanced; the track beams at the two ends of the three-span one-joint are disconnected from the adjacent track beams and are respectively fixedly connected to the same bridge pier through different supports, the three-span one-joint beam is sequentially and fixedly connected with four bridge piers from one end through supports, the three-span one-joint beam is respectively a first support, a second support, a third support and a fourth support, the first support is a movable support 5, the adjacent track beams 1 positioned on the same bridge pier are fixed on the bridge pier 2 through the fixed supports 6, the second support, the third support and the fourth support are all fixed supports 6, the second support and the third support are all arranged at the joint of the track beams provided with cast-in-situ belts 7, the adjacent track beams 1 positioned on the same bridge pier with the fourth support are fixed on the bridge pier 2 through the movable support 5, the three bridge piers bear longitudinal horizontal force jointly, the longitudinal and transverse overall rigidity of the structure is improved, and the size of the bridge pier and the foundation is smaller than that of a simple bridge girder.
The movable support 5 increases the adjustability of the track beam, and the movable support 5 is greatly improved compared with the movable support 8 in the prior art, so that the continuity of longitudinal adjustment of the movable support is realized. Fig. 5 is a front view of the cradle. Fig. 6 is a side view of the cradle. As shown in fig. 5 and 6, the cradle includes an upper plate 501, a planar slider 502, a middle plate 503, a cylindrical slider 504, a rotary slider 505, a lower plate 506, an anti-tilting mechanism 507, a height-adjusting stud 508, a bottom plate 509, a positioning spacer 510, a base plate 511, and a tension anchor 512. The support upper portion is equipped with a plurality of embedded bars, the embedded bars on support upper portion are used for with track coupling, fix the track on the support, all be equipped with tensile crab-bolt 512 under every embedded bar, tensile crab-bolt 512 is fixed the upper surface at upper saddle 501, upper saddle 501 lower part is equipped with the opening, well bedplate 503 is located in this opening, well bedplate 503 one end is horizontal structure, the other end is the convex cylinder structure, horizontal structure is relative with upper saddle 501 upper end internal surface, be equipped with plane slider 502 on this horizontal structure, upper saddle 501 upper end internal surface is equipped with plane slider 502, plane slider 502 on upper saddle 501 forms the plane friction pair with plane slider 502 on the horizontal structure together, realize the horizontal slip of roof beam body.
The lower seat board 506 is arranged below the middle seat board 503, a concave cylindrical surface structure matched with the convex cylindrical surface structure is arranged on one surface of the lower seat board 506 adjacent to the middle seat board 503, the convex cylindrical surface structure is provided with a cylindrical surface sliding plate 504, the concave cylindrical surface structure is provided with a cylindrical surface sliding plate 504, and the cylindrical surface sliding plate 504 on the convex cylindrical surface structure and the cylindrical surface sliding plate 504 on the concave cylindrical surface structure form a spherical surface friction pair together to realize the rotation of the beam body.
The upper end of lower bedplate 506 is located in the opening of upper bedplate 501, and lower bedplate 506 both sides buckle in the upper bedplate 501 opening, and both sides bayonet socket department all is equipped with rotates slider 505, and the setting of this rotates slider 505 can cooperate the cylindrical slide 504 on the convex cylindrical structure with concave cylindrical structure's cylindrical slide 504 together form spherical friction pair and realize the smooth rotation of roof beam body and upper bedplate.
The lower plate 506 below is equipped with the bottom plate 509, and the longitudinal section of bottom plate 509 is the T shape of falling, cuts off the setting between lower plate 506 and the bottom plate 509, and the upper surface of bottom plate 509 is equipped with prevents the mechanism of inclining 507, and this structure of preventing inclining 507 bottom mounting is on the upper surface of bottom plate 509, and the top of preventing the structure of preventing inclining 507 is located in the lower plate 506, prevents effectively that track and support from taking place to incline about, thereby establishes the track on the lower pier steadily.
The bottom plate 509 is provided with a cylindrical hole, the inner wall of the cylindrical hole is of a threaded structure, the position of the lower seat plate 506 corresponding to the cylindrical hole on the bottom plate 509 is also provided with a cylindrical hole with the inner wall of the threaded structure, the height-adjusting stud 508 is of a cylindrical structure, the diameter of the height-adjusting stud 508 is matched with that of the cylindrical hole, the outer wall of the height-adjusting stud 508 is of a threaded structure, one end of the height-adjusting stud 508 is arranged in the cylindrical hole of the bottom plate 509, the other end of the height-adjusting stud 508 is arranged in the cylindrical hole of the lower seat plate 506, a spanner jack is arranged at the position of the partition position between the lower seat plate 506 and the bottom plate 509, and the height-adjusting stud 508 can rotate under the action of the spanner so as to adjust the vertical height of the support, so that stepless continuous adjustment of the vertical height is realized. The height-adjusting stud 508 can transfer tension and compression load, overcomes the problem of uneven force transmission of the existing cast steel tension support, and improves the uniformity of the overall stress of the support.
The bottom plate 509 below is equipped with bed plate 511, and the bed plate 511 below is equipped with a plurality of tensile crab-bolts 512, and every tensile crab-bolt 512 all is equipped with the embedded bar below, and this embedded bar is used for being connected with lower part pier to fix the support on lower part pier.
The fixed support 6 constrains the longitudinal displacement, the lateral rotation angle, and releases only the longitudinal rotation angle. The fixed support 6 is a great improvement over the fixed support 9 of the prior art. Fig. 7 is a front view of the stationary support. Fig. 8 is a side view of the stationary support. As shown in fig. 7 and 8, the fixed support also includes an upper seat plate 501, a plane slider 502, a middle seat plate 503, a cylindrical slider 504, a rotating slider 505, a lower seat plate 506, an anti-tilting mechanism 507, a height-adjusting stud 508, a bottom plate 509, a positioning spacer 510, a base plate 511 and a tension anchor 512, and the structure and function are the same as those of the movable support 5, and the fixed support 6 is different from the movable support 5 in that the fixed support 6 is provided with a stopper 613 on the lower seat plate 506 for restricting rotation of the spherical friction pair formed by the cylindrical slider 504 on the convex cylindrical structure and the cylindrical slider 504 on the concave cylindrical structure together, and horizontal sliding of the plane friction pair formed by the plane slider 502 on the upper seat plate 501 and the plane slider 502 on the horizontal structure together, limiting lateral displacement and lateral rotation. The longitudinal displacement is fixed by a leveling stud 508.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (6)
1. The straddle type single-rail semi-fixed continuous beam comprises a rail beam (1), bridge piers (2), a foundation (3) and a cast-in-situ belt (7), and is characterized in that the bridge piers (2) are arranged on the foundation (3), the rail beam (1) is arranged on the bridge piers (2) in a segmented mode, and a plurality of adjacent rail beams (1) are connected into a beam section through the cast-in-situ belt (7);
a beam seam (4) is arranged between the track beam (1) of the beam Duan Liangduan and the adjacent track beam (1), and is separately fixed on the bridge pier (2), a movable support (5) is arranged under the beam Duan Yiduan and used for increasing the linear adjustability of the track beam, a fixed support (6) is arranged at the other end of the movable support, and the fixed supports (6) are arranged under the track beam (1) of the beam Duan Zhongjian and used for enabling the bridge pier (2) to be stressed uniformly so as to reduce the size of the bridge pier;
the movable support (5) and the fixed support (6) are respectively provided with a lower seat plate (506) and a bottom plate (509), the lower end of the lower seat plate (506) is provided with a cylindrical hole, the inner wall of the cylindrical hole is provided with a threaded structure, the bottom plate (509) is provided with a height-adjusting stud (508), the upper end of the height-adjusting stud (508) is arranged in the cylindrical hole and is used for uniformly transmitting the force on the track beam to the bridge pier through the height-adjusting stud so as to improve the overall stress uniformity of the support, and the height-adjusting stud (508) is connected with the threads on the inner wall of the cylindrical hole in a matched manner and is used for rotating the height-adjusting stud (508) to realize stepless adjustment of the track in the longitudinal height.
2. A straddle type monorail semi-fixed continuous beam according to claim 1, characterized in that said mobile support (5) and said fixed support (6) further comprise an upper seat plate (501), a middle seat plate (503) and a base plate (511);
the utility model discloses a beam body, including upper saddle (501) and lower saddle (506), upper saddle (501) bottom is equipped with the opening, well bedplate (503) are located in the opening, well bedplate (503) has lower saddle (506) down, lower saddle (506) upper end buckle is in the opening of upper saddle (501), the one end of well bedplate (503) is horizontal structure, and the other end is convex cylinder structure, lower saddle (506) with the adjacent one side of well bedplate (503) is equipped with concave cylinder structure, horizontal structure with upper saddle (501) inboard all is equipped with plane slider (502) for realize the horizontal slip of the beam body, convex cylinder structure with all be equipped with cylinder slider (504) on the concave cylinder structure.
3. A straddle type monorail semi-fixed continuous beam according to claim 2, characterized in that a snap-in structure is provided between the lower saddle (506) and the upper saddle (501), in which snap-in structure a rotating slider (505) is provided.
4. A straddle type monorail semi-fixed continuous beam according to claim 1 or 2, characterized in that a stopper (613) is provided in the fixed support (6), said stopper (613) being provided on the lower saddle (506).
5. A straddle type monorail semi-fixed continuous beam according to claim 1, characterized in that the upper surface of the bottom plate (509) is provided with an anti-tilting mechanism (507), the bottom end of the anti-tilting mechanism (507) is fixed on the surface of the bottom plate (509), and the top end of the anti-tilting mechanism (507) is arranged in the lower seat plate (506).
6. A straddle type monorail semi-fixed continuous beam according to claim 1, wherein said elevation stud (508) is provided with a spanner hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711215212.1A CN107988857B (en) | 2017-11-28 | 2017-11-28 | Straddle type monorail semi-fixed continuous beam |
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| CN201711215212.1A CN107988857B (en) | 2017-11-28 | 2017-11-28 | Straddle type monorail semi-fixed continuous beam |
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| CN107988857A CN107988857A (en) | 2018-05-04 |
| CN107988857B true CN107988857B (en) | 2023-08-25 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109750592A (en) * | 2018-09-26 | 2019-05-14 | 中铁十八局集团第二工程有限公司 | The connection structure of bridge pier and bridge at bridge expanssion joint |
| CN109853357A (en) * | 2018-12-26 | 2019-06-07 | 广州地铁设计研究院股份有限公司 | A kind of scalable half freely-supported is semicontinuous can spliced girder |
| WO2022045987A1 (en) * | 2020-08-27 | 2022-03-03 | Sino-Thai Engineering & Construction Public Company Limited | Continuous beam monorail structure and installation method |
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