CN1200170C - Construction method for longitudinally assembling prefabricated subsection of channel beam - Google Patents
Construction method for longitudinally assembling prefabricated subsection of channel beam Download PDFInfo
- Publication number
- CN1200170C CN1200170C CN 02137151 CN02137151A CN1200170C CN 1200170 C CN1200170 C CN 1200170C CN 02137151 CN02137151 CN 02137151 CN 02137151 A CN02137151 A CN 02137151A CN 1200170 C CN1200170 C CN 1200170C
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- Prior art keywords
- construction
- channel beam
- present
- prefabricated
- bridge
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- Expired - Fee Related
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Abstract
The present invention relates to the construction of bridges and over bridges and an erection type, particularly to a construction method for longitudinally assembling prefabricated subsections of channel beams. The present invention has the method that the channel beams are sectionally prefabricated, and then, the sectionally prefabricated channel beams are assembled into an integral channel beam on lifting devices, such as bridge-erecting machines, etc. The present invention has the advantages that the construction can not generate great influence on urban environment and ground traffic; construction cost is saved; the construction period is shortened, and the present invention is convenient for the implementation of standardized construction, standardized construction and mechanized construction.
Description
Technical field
The present invention relates to bridge and viaduct build and bridge set up class, particularly a kind of job practices of longitudinally assembling prefabricated subsection of channel beam.
Background technology
The job practices of the bridge that domestic existing orbit traffic overhead bridge is adopted all is to adopt the cast-in-place on the spot job practices of full framing usually, and the flow process of this method is: A. sets up support on the ground of handling well, makes template then on support; B. assembling reinforcement and bellows on template are installed with prestressing tendon in the bellows; C. water and smash the beam body concrete; Reach certain intensity and after the length of time Deng the beam body concrete, the whole prestressing force of stretch-draw beam body; D. mud jacking sealing off and covering anchorage and striking and template.This job practices has following shortcoming: during (1) construction, whole bridge is all established support from ground in the plane of projection, and is very big to the influence of urban environment and traffic above-ground; (2) ground has enough deadweight of bearing capacity brace summer body and working load under when construction bridge in order to make, and needs before the construction flatten and consolidation process ground under the bridge, increases operating expenses, has delayed construction speed, and if deal with improperly, has easily caused beam body cracking; (3) owing to all adopt field fabrication, be difficult to accomplish standardization, standardization, mechanized construction, be unfavorable for total quality control, the construction period is longer.
Summary of the invention
The objective of the invention is according to above-mentioned the deficiencies in the prior art part, a kind of job practices that is applicable to channel beam is provided, it is the job practices of the vertical assembly unit of prefabricated subsection, plant equipment such as this job practices employing bridge formation machine are carried out assembly unit, do not need support to be set from ground, corresponding also the needs flattens and consolidation process ground under the bridge, is convenient to carry out standardization, standardization, mechanized construction.
The object of the invention realizes being finished by following technical scheme: a kind of job practices of channel beam is characterized in that: A. elder generation prefabricate channel beam, a promptly prefabricated as required sections channel beam; B. at the scene, on lifting appliances such as bridge formation machine, the channel beam of prefabricate is assembled into whole channel beam; C. prestressing tendon in the stretch-draw channel beam; D. the prestressing tendon to stretch-draw carries out the mud jacking sealing off and covering anchorage.
Advantage of the present invention is that (1) owing to do not need from ground support to be set, construction can not produce considerable influence to urban environment and traffic above-ground; (2) do not need ground under the bridge is flattened and consolidation process, saved unnecessary operating expenses and shortened the duration; (3) be convenient to carry out standardization, standardization, mechanized construction, be easy to control construction quality and duration.
Summary of drawings
Accompanying drawing 1 is structural representation of the present invention.
Concrete technical scheme
Feature of the present invention and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that technician's of the same trade understanding:
As shown in Figure 1, always representing respectively in the accompanying drawing: prefabricate channel beam 1, shear connector, location tongue and groove 2 with reference to label 1-2.
Embodiment:
As shown in Figure 1, A. is earlier at factory's longitudinal divisions pregroove marks ellbeam, a section promptly prefabricated as required channel beam; B. on the bridge formation machine, shear connector and the location tongue and groove 2 of prefabricated channel beam by its end is assembled into whole channel beam; C. prestressing tendon in the stretch-draw channel beam; D. the prestressing tendon to stretch-draw carries out the mud jacking sealing off and covering anchorage.F. whole channel beam is fallen frame on spanning.
Claims (1)
1. the job practices of a longitudinally assembling prefabricated subsection of channel beam is characterized in that, steps in sequence is: A. is longitudinal divisions pregroove marks ellbeam at first; B. on lifting appliance, the channel beam of prefabricate is assembled into whole channel beam; C. prestressing tendon in the stretch-draw channel beam; D. last prestressing tendon to stretch-draw carries out the mud jacking sealing off and covering anchorage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02137151 CN1200170C (en) | 2002-09-26 | 2002-09-26 | Construction method for longitudinally assembling prefabricated subsection of channel beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02137151 CN1200170C (en) | 2002-09-26 | 2002-09-26 | Construction method for longitudinally assembling prefabricated subsection of channel beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1485498A CN1485498A (en) | 2004-03-31 |
| CN1200170C true CN1200170C (en) | 2005-05-04 |
Family
ID=34146891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02137151 Expired - Fee Related CN1200170C (en) | 2002-09-26 | 2002-09-26 | Construction method for longitudinally assembling prefabricated subsection of channel beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1200170C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1710207B (en) * | 2005-07-11 | 2010-11-03 | 上海市政工程设计研究院 | Steel strand back-tension prestressed channel mudjacking method |
| CN101666069B (en) * | 2009-09-09 | 2013-01-23 | 中建三局建设工程股份有限公司 | Construction technology for stretching notch by cast-in-situ prestress box beam |
| CN102720133B (en) * | 2011-03-31 | 2014-03-05 | 江苏恩纳斯重工机械有限公司 | Ultralow segment lifting bridge girder erection machine with one anchored end |
| CN102587287B (en) * | 2012-03-29 | 2014-07-16 | 海波重型工程科技股份有限公司 | Construction method for integral lifting of single channel girders of single-span channel girder bridge |
| CN104099866A (en) * | 2014-06-23 | 2014-10-15 | 中铁大桥勘测设计院集团有限公司 | Prestressed concrete continuous beam channel railway deck |
| CN105544385B (en) * | 2015-12-04 | 2017-07-28 | 郑州大学 | A kind of seam construction of prefabricated subsection formula concrete-bridge |
| CN105603880A (en) * | 2016-01-25 | 2016-05-25 | 中交二公局第一工程有限公司 | Assembly method of segmental box beam with reserved pressure grouting hole |
| CN107119548A (en) * | 2017-06-13 | 2017-09-01 | 林再颐 | A kind of channel change bridge for having anti-high wind ability |
| CN111608084B (en) * | 2020-05-29 | 2022-03-29 | 中国铁建大桥工程局集团有限公司 | Integral prefabrication and assembly construction method for reinforced concrete arch bridge arch ring segments |
-
2002
- 2002-09-26 CN CN 02137151 patent/CN1200170C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1485498A (en) | 2004-03-31 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050504 Termination date: 20140926 |
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| EXPY | Termination of patent right or utility model |