CN105672066B - Method for improving stress state of bottom plate overhanging combined box type track beam in suspended monorail traffic - Google Patents
Method for improving stress state of bottom plate overhanging combined box type track beam in suspended monorail traffic Download PDFInfo
- Publication number
- CN105672066B CN105672066B CN201610087707.XA CN201610087707A CN105672066B CN 105672066 B CN105672066 B CN 105672066B CN 201610087707 A CN201610087707 A CN 201610087707A CN 105672066 B CN105672066 B CN 105672066B
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- CN
- China
- Prior art keywords
- bottom plate
- type track
- track beam
- combined box
- base plate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 210000002435 tendon Anatomy 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000004873 anchoring Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 239000004567 concrete Substances 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000011178 precast concrete Substances 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- 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
- E01B25/22—Tracks for railways with the vehicle suspended from rigid supporting rails
- E01B25/24—Supporting rails; Auxiliary balancing rails; Supports or connections for rails
-
- 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
-
- 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
Abstract
The invention discloses a method for improving the stress state of a bottom plate overhanging combined box-type track beam in suspended monorail transit, which relates to the field of bridges, in particular to a method for arranging prestress in the bottom plate overhanging combined box-type track beam in suspended monorail transit so as to improve the stress state of the bottom plate overhanging combined box-type track beam, comprising a bottom plate overhanging combined box-type track beam (1), a rear Zhang Fati outer prestress beam (2), a post-tensioning bottom plate prestress beam (3) or a pre-tensioning bottom plate prestress rib (4), and is characterized in that: a post-tensioning method base plate prestress beam 3 is arranged in the base plate of the base plate outwards-extending combined box-type track beam (1); or a pretensioned base plate prestressed tendon (4) is arranged in the base plate of the base plate outwards-extended combined box-type track beam (1); a rear Zhang Fati external prestress beam (2) is arranged between two webs of the bottom plate outwards-extended combined box-type track beam (1); so as to improve the stress state of the bottom plate overhanging combined box type track beam (1).
Description
Technical Field
The invention relates to the field of bridges, in particular to a concrete method for arranging prestress in a bottom plate overhanging combined box-type track beam of suspension type monorail traffic, which aims to improve the stress state of the bottom plate overhanging combined box-type track beam.
Background
When the suspended monorail traffic prestress combined structure system adopts a box frame structure with an overhanging bottom plate, which consists of a concrete top bottom plate and a corrugated steel web, in operation, a vehicle load directly acts on the overhanging bottom plate of the box frame serving as a running surface, the corrugated steel web serves as a vehicle guide surface, and the outer side of the corrugated steel web also bears inward load, so that the cantilever bottom plate where the running surface is positioned and the web where the guide surface passes are mainly stressed areas, and a larger tensile force effect is generated at the joint between the bottom plate and the web, and a certain number of prestress ribs are required to be configured to resist the vehicle load born by the track beam in order to improve the stressed state of the combined box type track beam with the overhanging bottom plate.
There have been some studies on prestressing techniques, some of which are as follows:
the invention discloses a technology for setting secondary prestressing tendons in a bridge of a straddle type monorail traffic track beam, which is invented by the invention patent with application publication number CN 103485270A, and mainly aims at a prestressing setting method of a closed-end track beam at the bottom of the straddle type monorail traffic system.
The invention patent with application publication number of CN 104264574A discloses a small and medium span precast concrete beam bridge prestress beam structure and a setting method thereof, which effectively improves the transverse connection strength and rigidity of a small box beam or a T beam and the overall stress performance of the precast concrete beam bridge.
The above patents are all prestressed concrete beams with closed bottoms, but the prestressed combined box-type structural beams with the bottom plates extending outwards are not discovered until now. This patent will provide the technology of the overhanging combination box track roof beam stress state of bottom plate, improves the overhanging combination box track roof beam's of bottom plate stress state in the overhead monorail transit integrated configuration system.
Disclosure of Invention
The technical problems to be solved by the invention are as follows:
the method for improving the stress state of the bottom plate overhanging combined box-type track beam in suspended monorail traffic is characterized in that prestressed tendons are arranged between the track beam bottom plate and two corrugated steel webs, the arrangement form of the prestressed tendons is mainly solved, and the purposes of avoiding track beam cracking or reducing the width of a track beam concrete crack are achieved from the aspect of track beam stress.
The technical scheme adopted for solving the technical problems is as follows:
a method for improving the stress state of a bottom plate overhanging combined box-type track beam in suspended monorail traffic comprises a bottom plate overhanging combined box-type track beam 1, a post-tensioning method external prestress beam 2, a post-tensioning method bottom plate prestress beam 3 or a pretensioning method bottom plate prestress rib 4, which are composed of a top plate, a bottom plate and a corrugated steel web, and is characterized in that: a post-tensioning method base plate prestress beam 3 is arranged in the base plate of the base plate outwards-extending combined box-type track beam 1; or pretensioned base plate prestressed tendons 4 are arranged in the base plate of the base plate outwards-extended combined box-type track beam 1; the rear Zhang Fati outer prestress beam 2 is arranged between two webs of the bottom plate overhanging combined box type track beam 1 so as to improve the stress state of the bottom plate overhanging combined box type track beam 1.
The method for improving the stress state of the bottom plate overhanging combined box-type track beam in the suspended monorail traffic is characterized by comprising the following steps of: the rear Zhang Fati outer prestress beams 2 are symmetrically arranged on the inner sides of two webs of the bottom plate outwards-extending combined box-type track beam 1, and the number of the arranged prestress beams is M, wherein M=2-10; the post-tensioning method base plate prestress beams 3 are symmetrically arranged in the base plate of the base plate outwards-extending combined box-type track beam 1, and the number of arranged holes is N, wherein N=4-20; the pretensioning-method base plate prestressed tendons 4 are symmetrically arranged in the base plate of the base plate outwards-extending combined box-type track beam 1, and the number of the arranged base plates is K, wherein K=10-60.
The beneficial effects of the invention are as follows:
the prestress is respectively applied between the bottom plate and the web plate of the bottom plate outwards-extending combined box-type track beam, the effective arrangement is realized, and the purposes of balancing load and avoiding cracking are achieved in the aspect of stress; the purposes of easy realization and easy operation are achieved from the aspect of construction.
Drawings
FIG. 1 is a schematic view of the anchoring of the end of an overhanging composite box rail beam of a post-tensioned backplane.
FIG. 2 is a schematic diagram of the anchoring of the end of the hybrid tension floor overhanging composite box rail beam.
Figure 3 post-tensioned floor overhanging combined box rail beam prestress Shu Li floor plan.
FIG. 4 is a plan view of a post-tensioned floor overhanging composite box rail web pre-tensioned beam.
FIG. 5 is a plan view of a prestressed beam floor of an overhanging composite box track beam floor of a post-tensioned floor.
FIG. 6 is a plan view of the prestressed tendons of the bottom plate of the hybrid tension bottom plate overhanging combined box-type track beam.
In the figure: 1-a bottom plate overhanging combined box-type track beam; 2-post-tensioning in vitro pre-stress beam; 3-post-tensioning the baseboard prestress beam; 4-pretensioned base plate prestressed tendons.
Detailed Description
The invention will be further described with reference to the accompanying drawings:
example one of the method is to apply prestress in a box-type track beam with an overhanging combined bottom plate of a suspended monorail transportation, and use a post Zhang Fati external prestress beam 2, a post-tensioning method bottom plate prestress beam 3 and a box-type track beam 1 with an overhanging combined bottom plate.
In the step 1, in the working field prefabrication stage of the bottom plate overhanging combined box-type track beam 1, a diaphragm plate and a steering block are arranged on the bottom plate on the inner side of the box-type frame of the bottom plate overhanging combined box-type track beam 1, and a bottom plate prestress pore canal is reserved in the bottom plate.
Step 2, penetrating a post-tensioning prestress bundle 2 into the inner sides of the two webs through a transverse diaphragm and a steering block, tensioning, anchoring and sealing; penetrating a post-tensioning method base plate prestress bundle 3 into a base plate prestress pore canal, tensioning, anchoring and sealing; this improves the stress state of the bottom opening rail beam.
In the second example, prestress is applied to a box-type track beam with an overhanging combination of a bottom plate of a suspended monorail transportation, and a box-type track beam 1 with an overhanging combination of a bottom plate, namely a rear Zhang Fati outer prestress beam 2, a pretensioning-method bottom plate prestress rib 4 and a bottom plate is used.
In the working field prefabrication stage of the bottom plate overhanging combined box type track beam 1, a diaphragm plate and a steering block are arranged on the bottom plate on the inner side of the box frame of the bottom plate overhanging combined box type track beam 1, and pretensioning bottom plate prestressed tendons 4 are formed in the process of pouring the bottom plate overhanging combined box type track beam 1.
And 2, penetrating the post-tensioning prestress bundles 2 into the inner sides of the two webs through the transverse partition plates and the steering blocks, tensioning, anchoring and sealing, so that the stress state of the bottom plate overhanging track beam can be improved.
The foregoing description is only a preferred embodiment of the present patent, and is not intended to limit the present patent in any way, and any simple modification, equivalent variation and variation made to the above embodiment according to the technical matter of the present patent still fall within the scope of the technical solution of the present patent. The patent has novelty and practicability and meets the requirements, so that patent application is proposed according to law.
Claims (2)
1. A method for improving the stress state of a bottom plate overhanging combined box-type track beam in suspended monorail traffic comprises a bottom plate overhanging combined box-type track beam (1) consisting of a top plate and a corrugated steel web, a rear Zhang Fati external prestress beam (2), a post-tensioning bottom plate prestress beam (3) or a pretensioning bottom plate prestress rib (4), and is characterized in that: a post-tensioning method base plate prestress beam (3) is arranged in the base plate of the base plate outwards-extending combined box-type track beam (1); or a pretensioned base plate prestressed tendon (4) is arranged in the base plate of the base plate outwards-extended combined box-type track beam (1); a rear Zhang Fati external prestress beam (2) is arranged between two webs of the bottom plate outwards-extended combined box-type track beam (1); so as to improve the stress state of the bottom plate overhanging combined box type track beam (1).
2. The method for improving the stress state of the bottom plate overhanging combined box-type track beam in suspended monorail transit, which is characterized in that: the rear Zhang Fati outer prestress beams (2) are symmetrically arranged on the inner sides of two webs of the bottom plate outwards-extending combined box-type track beam (1), and the number of the arranged prestress beams is M, wherein M=2-10; the post-tensioning method base plate prestress beams (3) are symmetrically arranged in the base plate of the base plate outwards-extending combined box-type track beam (1), and the number of arranged holes is N, wherein N=4-20; the pretensioning-method base plate prestressed tendons (4) are symmetrically arranged in the base plate of the base plate outwards-extending combined box-type track beam (1), and the number of the arranged base plates is K, wherein K=10-60.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015107624689 | 2015-11-10 | ||
| CN201510762468 | 2015-11-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105672066A CN105672066A (en) | 2016-06-15 |
| CN105672066B true CN105672066B (en) | 2024-01-23 |
Family
ID=56305674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610087707.XA Active CN105672066B (en) | 2015-11-10 | 2016-02-17 | Method for improving stress state of bottom plate overhanging combined box type track beam in suspended monorail traffic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105672066B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107190592B (en) * | 2017-07-24 | 2023-03-28 | 中国五冶集团有限公司 | Suspension type monorail transit corrugated web track beam |
| CN113512932B (en) * | 2021-03-19 | 2022-11-25 | 宁波市政工程建设集团股份有限公司 | Prestressed steel beam connected prefabricated small box girder type hidden cover beam and construction method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000120004A (en) * | 1998-10-20 | 2000-04-25 | Nippon Steel Corp | Track-girder supporting structure for suspended type monorail |
| DE10304218A1 (en) * | 2003-01-30 | 2004-09-09 | Technische Entwicklungen Dr. Becker Gmbh | Overhead rail system for movable crane, has carrier comprising of I-beams which are symmetrically arranged and welded together, in which wheels and guide rollers move along carrier to guide movement of crane along carrier |
| CN1730260A (en) * | 2005-08-10 | 2006-02-08 | 上海市政工程设计研究院 | Method for making concrete beam |
| CN101705648A (en) * | 2009-11-06 | 2010-05-12 | 上海磁浮交通发展有限公司 | Post-pouring functional zone combined track beam |
| CN202131559U (en) * | 2011-04-01 | 2012-02-01 | 河南省交通规划勘察设计院有限责任公司 | Corrugated steel web plate prestressed concrete continuous box girder |
| CN104233947A (en) * | 2014-09-22 | 2014-12-24 | 中铁工程设计咨询集团有限公司 | Steel-concrete combined rail beam for straddle monorail |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1128900C (en) * | 2001-10-26 | 2003-11-26 | 上海磁悬浮交通发展有限公司 | Prestressed rail beam and its manufacture |
-
2016
- 2016-02-17 CN CN201610087707.XA patent/CN105672066B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000120004A (en) * | 1998-10-20 | 2000-04-25 | Nippon Steel Corp | Track-girder supporting structure for suspended type monorail |
| DE10304218A1 (en) * | 2003-01-30 | 2004-09-09 | Technische Entwicklungen Dr. Becker Gmbh | Overhead rail system for movable crane, has carrier comprising of I-beams which are symmetrically arranged and welded together, in which wheels and guide rollers move along carrier to guide movement of crane along carrier |
| CN1730260A (en) * | 2005-08-10 | 2006-02-08 | 上海市政工程设计研究院 | Method for making concrete beam |
| CN101705648A (en) * | 2009-11-06 | 2010-05-12 | 上海磁浮交通发展有限公司 | Post-pouring functional zone combined track beam |
| CN202131559U (en) * | 2011-04-01 | 2012-02-01 | 河南省交通规划勘察设计院有限责任公司 | Corrugated steel web plate prestressed concrete continuous box girder |
| CN104233947A (en) * | 2014-09-22 | 2014-12-24 | 中铁工程设计咨询集团有限公司 | Steel-concrete combined rail beam for straddle monorail |
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| Publication number | Publication date |
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| CN105672066A (en) | 2016-06-15 |
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