Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Large-span girder bridge box girder full-section one-time suspension pouring construction method

A construction method and full-section technology, applied in the direction of bridges, bridge materials, bridge construction, etc., can solve the problems of setting construction joints between layers and long construction period, and achieve fast formwork installation and dismantling and vertical formwork, reduce labor, and reduce deformation. Effect

Active Publication Date: 2019-11-15
湖南交通国际经济工程合作有限公司
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a one-time cantilevered construction method for the full section of the box girder of a long-span girder bridge, which effectively solves the need to set interlayer construction joints and construction period in the previous layered pouring process The disadvantage of being too long ensures the construction quality of the box girder

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Large-span girder bridge box girder full-section one-time suspension pouring construction method
  • Large-span girder bridge box girder full-section one-time suspension pouring construction method
  • Large-span girder bridge box girder full-section one-time suspension pouring construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0045] Embodiment: A kind of cantilevered construction method for the full section of the box girder of a long-span girder bridge, refer to figure 1 , 2 , 3, 4, 5, including the following steps:

[0046] a. The hanging basket is installed in place

[0047]The hanging basket is the main carrier of the load-bearing and formwork structure of the box girder full-section one-time cantilevered construction. The hanging basket includes the main truss 1, the suspension and anchoring system 2, the formwork system 3 and the walking system 4. Both the main truss 1 and the formwork system 3 move back and forth through the walking system 4 . The main truss 1 is the main load-bearing structure of the cantilever construction of the box girder. The main truss 1 is an isosceles trapezoidal truss structure. The diagonal brace 14 is located between the upper crossbar 11 and the lower crossbar 12, and the two ends of the diagonal brace 14 are respectively fixed to the upper crossbar 11 and the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a large-span girder bridge box girder full-section one-time suspension pouring construction method, and belongs to the technical field of bridge construction. The large-span girder bridge box girder full-section one-time suspension pouring construction method comprises the steps of mounting of a hanging basket in place; hanging basket formwork erecting; steel bar binding, prestressed reinforcement and pipeline mounting; inner formwork mounting and reinforcing; concrete warehousing and distributing system mounting; symmetrical pouring of girder-segment concrete cantilevers; curing and reinforcing waiting; prestressing strand penetrating and tension, and pipeline grouting; and hanging basket disengaging, forward moving and taking place. According to the large-span girder bridge box girder full-section one-time suspension pouring construction method, the disadvantages that as for a previous fractional and layered pouring technology, interlayer construction joints need to be formed, and the construction period is excessive long are overcome, and the construction quality of a box girder is ensured.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a one-time cantilevered construction method for the entire section of a box girder of a long-span girder bridge. Background technique [0002] When crossing large valleys and large rivers, the design scheme of long-span prestressed concrete box girder bridges (continuous rigid frame, continuous box girder, etc.) is often used. The height of the beam section at the root of the upper frame box girder is generally about 10m, and the maximum height has reached 14.5m at present. The box girder often adopts the construction method of hanging basket hanging cast. For the box girder section in the root area, due to its large height and narrow operating space, there are difficulties in placing concrete in the warehouse, distributing materials, and vibrating. The comprehensive performance requirements of concrete are high. Hanging basket Rigidity requirements are large and oth...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/10E01D101/28
CPCE01D21/10E01D2101/28
Inventor 吴初平周强蔡纲陆灿根曾旎萍
Owner 湖南交通国际经济工程合作有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com