Construction method for integrally sliding large-span steel pipe arch of curved bridge

A technology of integral sliding and construction methods, which is applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., and can solve the problems of occupying a lot of space and long construction period of steel pipe arches

Active Publication Date: 2011-01-05
CHINA FIRST HIGHWAY ENG +1
View PDF6 Cites 43 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method adopts the construction technology of segmental assembly of steel pipe arches in different positions and overall sliding in place, which effe...

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 for integrally sliding large-span steel pipe arch of curved bridge
  • Construction method for integrally sliding large-span steel pipe arch of curved bridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The following is combined with the specific figure 1 And embodiment the present invention is described further.

[0032] 1. Project overview

[0033] The superstructure of piers 715#~718# of the (70+136+70)m continuous beam arch bridge across the Loujiang River on the Beijing-Shanghai high-speed railway is a composite structure of (70+136+70)m prestressed concrete continuous beam and steel tube concrete arch. The two ends of the bridge are 30m simply supported box girders. The calculated span of the steel pipe arch is 136m, the rise-span ratio is 1 / 5, the rise height is 27.2m, the arch axis is a quadratic parabola (the design arch axis equation Y=-1 / 170X2+0.8X), and the maximum pre-camber of arch rib 6 is set to 0.15 m, and the construction elevation is 27.35m (construction arch axis equation Y=-0.005915X2+0.804412X). During the construction, it is manufactured and assembled according to the axis of the construction arch, and the arch rib chord is arched with a 2m lo...

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 relates to a construction method for integrally sliding a large-span steel pipe arch of a curved bridge, belonging to the field of bridge engineering construction. The method comprises the following steps: firstly, carrying out on-site splicing and welding on the manufacturing and installing sections of a steel pipe arch to form a large hoisting section; then installing a temporary arch-splicing support on a bridge-site longitudinal splicing site position, arranging arch ribs on the temporary arch-splicing support, and adopting an arch springing restraint device to preload arch springings after finishing splicing the steel pipe arch, thus enabling the steel pipe arch to form a stressed entirety; and finally, dismantling the temporary arch-splicing support, and adopting a pushing power system to realize integrally sliding the whole steel pipe arch into a proper position. The construction method of the invention has the advantages of small site occupation, integral hoisting of large sections, less hoisting subsection and less arch-splicing support amount, thus the construction cost is economical, the high-altitude welding quantity is less, the welding quality is ensured, the arch axis linetype control is easy, the steel pipe arch splicing and a concrete beam can be simultaneously constructed, arch splicing is carried out on an ectopic bridge site, the underbridge navigation is not influenced, the construction is safe and the construction progress can be quickened.

Description

technical field [0001] The invention relates to a bridge construction method, in particular to a large-span steel pipe arch integral sliding construction method for a curved bridge, belonging to the field of bridge engineering construction. Background technique [0002] At present, with the substantial improvement of the level of bridge construction in our country, steel pipe arch bridges are popular with people for their beautiful appearance and low cost, and have been widely used. The installation technology of steel pipe arches varies according to the geological and environmental factors of the bridge. There are support construction methods, cable hoisting methods, horizontal rotation methods, vertical rotation methods, and construction methods of comprehensive application of several methods. [0003] Scaffold method: [0004] That is to say, the method of cast-in-place or assembled structure on the support, which is to add pre-camber according to the design line of the ...

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): E01D21/06
Inventor 黎儒国吴文明尹玉林周思锋
Owner CHINA FIRST HIGHWAY ENG
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