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

Two-span continuous-construction steel-mixed composite bridge construction method adopting back rope type bridge erecting machine

A technology of bridge construction and bridge erection machine, applied in the direction of erection/assembly of bridges, bridges, bridge construction, etc., can solve the problems of unfavorable stress on steel beams and side spans, slow construction speed, low equipment utilization rate, etc. Moment cracking problem, construction speed increase, and the effect of improving utilization

Active Publication Date: 2019-10-18
HENAN PROVINCIAL COMM PLANNING & DESIGN INST CO LTD +2
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a construction method for a two-span steel-concrete composite bridge using a back-cable bridge-erecting machine. handicap problem

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
  • Two-span continuous-construction steel-mixed composite bridge construction method adopting back rope type bridge erecting machine
  • Two-span continuous-construction steel-mixed composite bridge construction method adopting back rope type bridge erecting machine
  • Two-span continuous-construction steel-mixed composite bridge construction method adopting back rope type bridge erecting machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The construction method of the two-span steel-concrete composite bridge adopting the back-cable type bridge erecting machine of the present invention is suitable for the situation that the steel girder unit span is 70-150m. Taking the steel-concrete continuous composite bridge with six spans and one connection as an example below, the construction method of the present invention will be described in more detail.

[0037] Such as Figure 1-7 Shown, the present invention mainly comprises the following steps:

[0038] In the first step, according to the bridge design scheme, prefabrication such as Figure 8 As shown in the steel beam unit 1, the steel beam unit 1 mainly includes a web 1.1 and a flange 1.2, and a temporary hanging piece 1.3 is welded on the flange 1.2.

[0039] In the second step, after the construction of the bridge foundation piles and bridge piers is completed, the bridge erecting machine 2 is put in place.

[0040] Such as Figure 9 As shown, the br...

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 two-span continuous-construction steel-mixed composite bridge construction method adopting a back rope type bridge erecting machine. The steps are as follows: 1, steel beam units are prefabricated; 2, the bridge erecting machine is made to travel to first and second span positions of a main bridge, and the front, middle and rear legs of the bridge erecting machine is madeto stand on pier bent caps respectively; 3, steel beams of the first span are hoisted to be in place, the middle legs are adjusted to reserve erecting space, and steel beams of the second span are hoisted to be in place; 4, the steel beams of the first and second span are longitudinally welded; 5, prefabricated panels of the first and second spans are installed and the positions of the middle legs are adjusted again; 6, the steel beams of the two spans are simultaneously pulled; 7 longitudinal and transverse wet joint concrete of the panels of the first and second spans are continuously cast;and 8 construction is carried out according to the two-span continuous construction in the second to seventh steps until the completion of the completion of the bridge. The method of the invention can greatly improve the construction progress of steel-mixed composite bridges, and can also improve the stress state of the composite structures. The method shows a new concept of the steel-mixed composite bridge construction method, and has a wide application prospect in the long and large span steel-mixed composite bridges.

Description

technical field [0001] The invention relates to a construction method of a steel-concrete composite beam, in particular to a construction method of a two-span steel-concrete composite bridge using a back cable type bridge erecting machine. Background technique [0002] Steel-concrete composite bridges have many advantages such as light weight, large spanning capacity, and fast construction progress. They have very obvious economic benefits and competitiveness in transportation construction. At present, the country is vigorously promoting the construction of steel-concrete composite beam bridges. Since the construction sequence and construction method will affect the completed state and mechanical characteristics of the steel-concrete composite girder bridge, it is necessary to select an appropriate construction method based on the actual situation. [0003] At present, there are three commonly used construction methods: ① Bracket construction: first erect temporary mounting ...

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): E01D21/00
CPCE01D21/00
Inventor 李斐然张存超张海啸袁波郭晓光傅立军谢理伟关冀
Owner HENAN PROVINCIAL COMM PLANNING & DESIGN INST CO LTD
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