CN109208456B - Prefabricated track beam for straddle type rail vehicle and straddle type rail transit system - Google Patents
Prefabricated track beam for straddle type rail vehicle and straddle type rail transit system Download PDFInfo
- Publication number
- CN109208456B CN109208456B CN201710526553.4A CN201710526553A CN109208456B CN 109208456 B CN109208456 B CN 109208456B CN 201710526553 A CN201710526553 A CN 201710526553A CN 109208456 B CN109208456 B CN 109208456B
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- CN
- China
- Prior art keywords
- straddle type
- solid
- type rail
- track beam
- section
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B13/00—Other railway systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B13/00—Other railway systems
- B61B13/04—Monorail systems
- B61B13/06—Saddle or like balanced type
-
- 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
- E01D19/06—Arrangement, construction or bridging of expansion joints
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
Abstract
The invention discloses a precast track beam for a straddle type rail vehicle and a straddle type rail transit system, wherein the precast track beam for the straddle type rail vehicle comprises: a solid beam; the prestressed tendon penetrates through the solid beam along the length direction of the solid beam, and the middle part of the prestressed tendon is bent downwards relative to two ends of the prestressed tendon; wherein the ratio of the dead load to the live load of the precast track beam is 0.8-1.8. The prefabricated track beam for the straddle type track vehicle has the advantages of large span, simple construction process, low engineering cost and the like.
Description
Technical Field
The invention relates to the technical field of transportation, in particular to a prefabricated track beam for a straddle type track vehicle and a straddle type track transportation system with the prefabricated track beam for the straddle type track vehicle.
Background
A precast track roof beam for straddle type rail vehicle among the correlation technique, generally adopt the concrete beam that has certain hollow rate and provide the steel strand wires of prestressing force, at the roof beam height, under the certain circumstances of roof beam width and hollow rate, it receives the restriction for satisfying each item performance requirement span, can't accomplish bigger, and on this basis, in order to guarantee the normal use and the driving operation safety of construction period and operation period track roof beam, the demand quantity of steel strand wires is more, because the interference of track roof beam hollow centre form, the space that the steel strand wires can be arranged is limited, so the problem that the steel strand wires interfered often appears in the construction. In addition, due to the limited span of the track beam, more supports are required. Pier and pile foundation, resulting in higher construction cost.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the prefabricated track beam for the straddle type rail vehicle, which has the advantages of large span, simple construction process, low engineering cost and the like.
The invention also provides a straddle type rail transit system with the prefabricated rail beam for the straddle type rail vehicle.
An embodiment according to a first aspect of the invention proposes a prefabricated rail beam for a straddle type rail vehicle, comprising: a solid beam; the prestressed tendon penetrates through the solid beam along the length direction of the solid beam, and the middle part of the prestressed tendon is bent downwards relative to two ends of the prestressed tendon; wherein the ratio of the dead load to the live load of the precast track beam is 0.8-1.8.
The prefabricated track beam for the straddle type track vehicle has the advantages of large span, simple construction process, low engineering cost and the like.
According to some embodiments of the invention, the ratio of dead load to live load of the precast track beam is 0.8-0.9.
According to some specific examples of the invention, the solid beam has a rectangular cross-section.
Further, the height of the cross section of the solid beam is 1490mm-1510mm, and the width of the cross section of the solid beam is 698mm-702 mm.
Further, the height of the cross section of the solid beam is 1500mm, and the width of the cross section of the solid beam is 700 mm.
According to some embodiments of the present invention, in a horizontal section of the solid beam, a projection of the tendon is a straight line and a length direction of the straight line is parallel to a length direction of the solid beam.
According to some specific examples of the invention, the tendon is a plurality of tendons, and the tendons are symmetrical about a vertical central axis of the cross section of the solid beam in the cross section of the solid beam.
According to some embodiments of the invention, the tendon is a steel strand.
According to some specific embodiments of the present invention, the end face of the solid beam is provided with a rivet for fixing the tendon.
An embodiment according to a second aspect of the present invention provides a straddle type rail transit system including: a track beam installed from a prefabricated track beam for a straddle type rail vehicle according to an embodiment of the first aspect of the present invention; a vehicle body; the bogie is arranged at the bottom of the vehicle body, the bogie straddles on the track beam, and the vehicle body is pulled by the bogie to run along the track beam.
According to the straddle type rail transit system disclosed by the embodiment of the invention, by utilizing the prefabricated rail beam for the straddle type rail vehicle disclosed by the embodiment of the first aspect of the invention, the advantages of simple construction process, low engineering cost and the like are achieved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a side cross-sectional view of a prefabricated track beam for a straddle type rail vehicle according to an embodiment of the present invention.
Fig. 2 is a top cross-sectional view of a prefabricated track beam for a straddle type rail vehicle according to an embodiment of the present invention.
Fig. 3 is an end view schematic of a prefabricated rail beam for a straddle type rail vehicle according to an embodiment of the present invention.
Fig. 4 is an end view of a prefabricated rail beam for a straddle type rail vehicle according to another embodiment of the present invention.
Reference numerals:
a prefabricated track beam 1 for straddle type rail vehicle,
A solid beam 10,
The prestressed tendon 20,
And a rivet 30.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "vertical", "horizontal", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A precast track beam 1 for a straddle type railway vehicle according to an embodiment of the present invention will be described below with reference to the accompanying drawings.
As shown in fig. 1 to 4, a precast track beam 1 for a straddle type railway vehicle according to an embodiment of the present invention includes a solid beam 10 and a tendon 20. The straddle type rail vehicle is a vehicle in which a bogie at the bottom of a vehicle body straddles a rail beam, and the bogie covers the rail beam downward from both sides of the rail beam, for example, a straddle type monorail vehicle and a straddle type double-rail vehicle.
The solid beam 10 is a solid structure, i.e. the hollow rate is zero, and the solid beam 10 may be a solid concrete beam. The tendon 20 penetrates the solid beam 10 along the length direction of the solid beam 10, and for the same tendon 20, the middle portion of the tendon 20 is lower than the two ends of the tendon 20, in other words, the middle portion of the tendon 20 bends downward relative to the two ends of the tendon 20. Wherein the ratio of the dead load to the live load of the precast track beam 1 is 0.8-1.8.
Specifically, when the precast track beam 1 is manufactured, tension is applied to the tendons 20 at two ends of the precast track beam 1, and the middle of the tendons 20 moves upwards under the action of the tension, so that the middle of the solid beam 10 protrudes upwards to counteract the gravity of the track beam and the pressure generated by the second-stage dead load.
As will be understood by those skilled in the art, the dead load borne by the precast track beam 1 is the self weight of the beam and the second-stage load and the prestress, and the live load is the gravity of the vehicle, and it is necessary to ensure that the upper surface of the solid beam 10 does not crack under the action of the dead load and that the lower surface of the solid beam 10 does not crack under the action of the live load.
According to the prefabricated track beam 1 for the straddle type track vehicle, the solid beam 10 with the solid structure is adopted, and the ratio of the constant load to the live load of the prefabricated track beam 1 is optimized, so that the span can be increased under the condition that the height and the width of the prefabricated track beam 1 are not changed, the bottleneck of the span of the existing straddle type track beam is broken through, for example, the bottleneck that the span of the existing straddle type track beam can only reach 24m at the height of 1.5m beam is broken through, the span can reach 26m, the arrangement number of supports, piers and pile foundations of the prefabricated track beam 1 with the same mileage can be reduced, the use amount of the prestressed ribs 20 can be reduced, the arrangement of hollow internal molds can be omitted, and the construction process is simplified.
In addition, in the precast track beam in the related art, the concrete beam adopts the steel bars to weave the cavity to form the hollow structure, and the cavity is filled with the internal mold, so that the steel strands need to be bent outwards due to the fact that the steel strands need to avoid the hollow part when viewed from the horizontal section of the concrete beam, and the difficulty of the construction process is further increased.
According to the precast track beam 1 for the straddle type track vehicle, the solid beam 10 with the solid structure is adopted, on one hand, a cavity does not need to be machined and an internal mold does not need to be filled, and on the other hand, the prestressed tendon 20 does not need to be bent in the horizontal direction, namely, as shown in fig. 2, in the horizontal section of the solid beam 10, the length direction of the prestressed tendon 20 is parallel to the length direction of the solid beam 10, namely, the projection of the prestressed tendon 20 in the horizontal section of the solid beam 10 is a straight line, and the length direction of the straight line is parallel to the length direction of the solid beam 10. Therefore, the arrangement of the prestressed tendons 20 can be more flexible, and the difficulty of the construction process is further reduced.
Therefore, the precast track beam 1 for the straddle type rail vehicle according to the embodiment of the invention has the advantages of large span, simple construction process, low construction cost and the like.
A prefabricated track beam 1 for a straddle type rail vehicle according to a specific embodiment of the present invention will be described below with reference to the accompanying drawings.
As shown in fig. 1 to 4, a precast track beam 1 for a straddle type railway vehicle according to an embodiment of the present invention includes a solid beam 10 and a tendon 20.
Further, the ratio of the dead load to the live load of the precast track beam 1 is 0.8-0.9.
Optionally, the tendons 20 are steel strands.
In some embodiments of the present invention, the cross section of the solid beam 10 is rectangular, and the solid beam 10 has a constant cross section, that is, the cross section of each part in the length direction of the solid beam 10 has a uniform height and a uniform width, and the four outer surfaces of the solid beam 10, the upper surface, the lower surface, the left surface, the right surface, and the left surface, and the right surface, are all planar.
The cross section of the solid beam 10 is a cross section of the solid beam 10 perpendicular to the length direction thereof.
Further, the height of the cross section of the solid beam 10 is 1490mm-1510mm, and the width of the cross section of the solid beam 10 is 698mm-702 mm.
Further, the height of the cross section of the solid beam 10 is 1500mm, and the width of the cross section of the solid beam 10 is 700 mm.
In some specific examples of the present invention, as shown in fig. 3 and 4, the tendon 20 is plural. In the cross section of the solid beam 10, the plurality of prestressed tendons 20 are symmetrical about the vertical central axis of the cross section of the solid beam 10, the plurality of prestressed tendons 20 uniformly provide prestress to the solid beam 10, and the resultant force point of the plurality of prestressed tendons 20 is located on the vertical central axis of the cross section of the solid beam 10.
Furthermore, the end surfaces of the solid beam 10 are provided with rivets 30 for fixing the tendons 20, the rivets 30 on each end surface of the solid beam 10 are multiple and correspond to the tendons 20 one by one, and the rivets 30 on the two end surfaces of the solid beam 10 fix the two ends of the tendons 20 respectively.
For example, as shown in fig. 3, on each end surface of the solid beam 10, six rivets 30 are arranged in four rows distributed in the up-down direction on the end surface of the solid beam 10, wherein the first row and the third row respectively include one rivet 30 from top to bottom and the rivet 30 is located on the vertical central axis of the cross section of the solid beam 10, the second row and the fourth row respectively include two rivets 30 from top to bottom and the two rivets 30 in each row are symmetrical with respect to the vertical central axis of the cross section of the solid beam 10.
For another example, as shown in fig. 4, on each end surface of the solid beam 10, six rivets 30 are arranged in two rows distributed in the up-down direction on the end surface of the solid beam 10, two rows of rivets 30 are located at the lower portion of the solid beam 10, each row includes three rivets 30, the rivet 30 in the middle of each row is located on the vertical central axis of the cross section of the solid beam 10, and the rivets 30 on both sides of each row are symmetrical with respect to the vertical central axis of the cross section of the solid beam 10.
It will be understood by those skilled in the art that the distribution of the rivets 30 on the end face of the solid beam 10 corresponds to the distribution of the ends of the plurality of tendons 20 on the end face of the solid beam 10.
A straddle-type rail transit system according to an embodiment of the present invention is described below.
The straddle type rail transit system comprises a rail beam, a vehicle body and a bogie.
The track beam is installed from the prefabricated track beam 1 for the straddle type railway vehicle according to the above embodiment of the present invention. The bogie is arranged at the bottom of the vehicle body, the bogie straddles on the prefabricated track beam 1, and the vehicle body is pulled by the bogie to run along the track beam.
According to the straddle type track traffic system, the prefabricated track beam 1 for the straddle type track vehicle has the advantages of simple construction process, low construction cost and the like.
Other constructions and operations of the straddle-type rail transit system according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A precast track beam for a straddle type rail vehicle, comprising:
a solid beam;
the prestressed tendon penetrates through the solid beam along the length direction of the solid beam, and the middle part of the prestressed tendon is bent downwards relative to two ends of the prestressed tendon;
the ratio of the dead load to the live load of the precast track beam is 0.8-1.8, the projection of the prestressed tendons is a straight line, the length direction of the straight line is parallel to the length direction of the solid beam, the prestressed tendons are multiple, the prestressed tendons are arranged on the lower portion of the solid beam, and the resultant force point of the prestressed tendons is located on the vertical central axis of the cross section of the solid beam.
2. The precast track beam for a straddle type rail vehicle according to claim 1, wherein the ratio of the dead load to the live load of the precast track beam is 0.8-0.9.
3. The precast track beam for a straddle type rail vehicle according to claim 1, wherein the solid beam has a rectangular cross section.
4. The precast track beam for a straddle type rail vehicle according to claim 3, wherein the solid beam has a cross section with a height of 1490mm-1510mm and a width of 698mm-702 mm.
5. The precast track beam for a straddle type rail vehicle according to claim 4, wherein the solid beam has a height of 1500mm in cross section and a width of 700mm in cross section.
6. The precast track beam for a straddle type rail vehicle according to claim 1, wherein the tendon is plural, and in the cross section of the solid beam, the plural tendons are symmetrical with respect to a vertical central axis of the cross section of the solid beam.
7. The precast track beam for a straddle type railway vehicle according to any one of claims 1 to 6, wherein the tendons are steel strands.
8. The precast track beam for the straddle type rail vehicle according to any one of claims 1 to 6, wherein rivets for fixing the tendons are provided on end surfaces of the solid beams.
9. A straddle-type rail transit system, comprising:
a rail beam installed from a prefabricated rail beam for a straddle-type rail vehicle according to any one of claims 1 to 8;
a vehicle body;
the bogie is arranged at the bottom of the vehicle body, the bogie straddles on the track beam, and the vehicle body is pulled by the bogie to run along the track beam.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710526553.4A CN109208456B (en) | 2017-06-30 | 2017-06-30 | Prefabricated track beam for straddle type rail vehicle and straddle type rail transit system |
| PCT/CN2018/092415 WO2019001364A1 (en) | 2017-06-30 | 2018-06-22 | Prefabricated rail beam for straddle-type rail transit vehicle, and straddle-type rail transit system |
| BR112019027428-6A BR112019027428A2 (en) | 2017-06-30 | 2018-06-22 | prefabricated rail beam for rail-type vehicle and rail transit system for rail-type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710526553.4A CN109208456B (en) | 2017-06-30 | 2017-06-30 | Prefabricated track beam for straddle type rail vehicle and straddle type rail transit system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109208456A CN109208456A (en) | 2019-01-15 |
| CN109208456B true CN109208456B (en) | 2020-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710526553.4A Active CN109208456B (en) | 2017-06-30 | 2017-06-30 | Prefabricated track beam for straddle type rail vehicle and straddle type rail transit system |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN109208456B (en) |
| BR (1) | BR112019027428A2 (en) |
| WO (1) | WO2019001364A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113463494B (en) * | 2020-03-31 | 2022-12-09 | 比亚迪股份有限公司 | Track beam and construction method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1335429A (en) * | 2001-09-07 | 2002-02-13 | 上海磁悬浮交通发展有限公司 | Track structure of high-speed track traffic |
| CN203741713U (en) * | 2014-03-25 | 2014-07-30 | 重庆工商职业学院 | Prestressed concrete bridge deck slab |
| CN105648851A (en) * | 2016-03-17 | 2016-06-08 | 北京交通大学 | Straddle type concrete slab track beam for monorail transportation |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174068A (en) * | 2013-04-12 | 2013-06-26 | 北京交通大学 | Straddle type single-rail traffic rigid frame system manufacturing construction method and linear control system |
| CN103485279B (en) * | 2013-10-08 | 2016-03-30 | 北京交通大学 | For the wet seam of cross-saddle single-track traffic |
| CN103485270A (en) * | 2013-10-11 | 2014-01-01 | 北京交通大学 | Setting technology of second-phase pre-stressed tendons in straddle type single-traffic-track girder bridge |
| CN205711572U (en) * | 2015-11-10 | 2016-11-23 | 北京交通大学 | A kind of suspension type base plate opening combinations box track girder using presstressed reinforcing steel |
| CN105839510B (en) * | 2016-05-23 | 2017-10-10 | 西安公路研究院 | A kind of steel and ultra-high performance concrete composite continuous bridge structure and its construction method |
| CN106049201A (en) * | 2016-07-27 | 2016-10-26 | 中铁第四勘察设计院集团有限公司 | Medium and low speed maglev traffic engineering low line solid bearing-trail beam structure and construction method thereof |
| CN206034272U (en) * | 2016-08-24 | 2017-03-22 | 中交瑞通路桥养护科技有限公司 | External prestress steel anchor |
| CN106638261A (en) * | 2016-12-07 | 2017-05-10 | 中铁第四勘察设计院集团有限公司 | Railway bridge separated dual-box pre-stressed concrete main girder structure |
| CN206512532U (en) * | 2016-12-22 | 2017-09-22 | 中交铁道设计研究总院有限公司 | A kind of straddle type single rail prestressed RPC track girder |
-
2017
- 2017-06-30 CN CN201710526553.4A patent/CN109208456B/en active Active
-
2018
- 2018-06-22 WO PCT/CN2018/092415 patent/WO2019001364A1/en active Application Filing
- 2018-06-22 BR BR112019027428-6A patent/BR112019027428A2/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1335429A (en) * | 2001-09-07 | 2002-02-13 | 上海磁悬浮交通发展有限公司 | Track structure of high-speed track traffic |
| CN203741713U (en) * | 2014-03-25 | 2014-07-30 | 重庆工商职业学院 | Prestressed concrete bridge deck slab |
| CN105648851A (en) * | 2016-03-17 | 2016-06-08 | 北京交通大学 | Straddle type concrete slab track beam for monorail transportation |
Non-Patent Citations (2)
| Title |
|---|
| 2.预应力筋布置;陈宝春;《桥梁工程》;20090228;第99页 * |
| 第1章 单轨交通;周庆瑞等;《新型城市轨道交通》;20050831;第29-50页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109208456A (en) | 2019-01-15 |
| BR112019027428A2 (en) | 2020-07-07 |
| WO2019001364A1 (en) | 2019-01-03 |
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