Construction method of long-span composite beam bridge with steel truss and corrugated steel web

A technology of corrugated steel webs and steel trusses, applied to long-span composite girder bridges and their construction fields, can solve problems such as web height, buckling instability, and loss in negative moment areas

Active Publication Date: 2019-01-01
GUANGXI TRANSPORTATION SCI & TECH GRP CO LTD
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the increase of the bridge span, under the constraints of the support height-span ratio of 1/15-1/17, when the span reaches more than 180m, the net height of the corrugated steel web at the fulcrum reaches 9-10m, The web in the negative moment area is super high, p

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
  • Construction method of long-span composite beam bridge with steel truss and corrugated steel web
  • Construction method of long-span composite beam bridge with steel truss and corrugated steel web
  • Construction method of long-span composite beam bridge with steel truss and corrugated steel web

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] 1. Basic structure and principle of steel truss-corrugated steel web long-span composite girder bridge

[0043] Steel truss-corrugated steel web mixed shear is adopted, and steel truss-corrugated steel web beam section is set outside the lining concrete section of the bridge middle fulcrum, and the length of the beam section is L h , to share the problem of excessive shearing of the corrugated steel web of the beam section ( figure 1 ). Steel truss-corrugated Steel web beam section length L h It should be satisfied that the net height of the corrugated steel web is greater than 5m, and the stability safety factor of the corrugated steel web of the beam section is greater than 2.0.

[0044] Such as figure 2 As shown, the steel truss-corrugated steel web beam section is composed of steel columns, compression steel trusses, tension steel trusses, gusset plates, corrugated steel webs, steel upper flange plates, and steel lower flange plates. Among them, the compression...

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 construction method of long-span composite beam bridge with steel truss and corrugated steel web. The steel truss and corrugated steel web beam segment is arranged outside the fulcrum lining concrete segment in the bridge. The steel truss and corrugated steel web beam segment can effectively share the shear load of beam segment, prevent buckling instability of corrugatedsteel web and structural damage, meet the design requirements of long-span corrugated steel web beam bridge, and solve the problem of large shear of corrugated steel web of long-span corrugated steelweb bridge lining outer beam segment. Accordingly, the inventors also established corresponding construction methods. The invention is applicable to the design and use of beam bridges with spans of 160m and above, and has certain engineering significance and great economic value.

Description

technical field [0001] The invention belongs to the field of transportation bridge and culvert engineering, in particular to a steel truss-corrugated steel web long-span composite girder bridge and a construction method thereof. Background technique [0002] As the span of the bridge increases, the height of the section steel web near the fulcrum of the corrugated steel web is also increasing, and buckling failure is prone to occur. In general engineering, lining concrete is used to restrain the corrugated steel web near the fulcrum. plate to prevent segmental buckling. "Guangdong Provincial Code" (DB44 / T1393-2014 Article 7.2.2) pointed out that the net height of corrugated steel web should be less than 5m to prevent web buckling instability. However, with the increase of the bridge span, under the constraints of the support height-span ratio of 1 / 15-1 / 17, when the span reaches more than 180m, the net height of the corrugated steel web at the fulcrum reaches 9-10m, The web...

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
IPC IPC(8): E01D12/00E01D19/00E01D21/00
CPCE01D12/00E01D19/00E01D21/00
Inventor 陈齐风黎水昌罗吉智罗岩枫郝天之
Owner GUANGXI TRANSPORTATION SCI & TECH GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap