Support-free full-bridge segment prefabricating method based on cantilever balanced assembling

A cantilever and segment technology, which is applied in the field of unsupported full-bridge segment prefabrication based on cantilever balance assembly, can solve the problems of long construction period, formwork installation error, difficulty in construction workers, etc. The effect of quality, improving efficiency and ensuring quality

Inactive Publication Date: 2018-06-12
瀚阳国际工程咨询有限公司
View PDF8 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Due to the influence of the outdoor environment, construction techniques such as formwork installation errors, steel bar binding, concrete pouring and outdoor maintenance make it

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
  • Support-free full-bridge segment prefabricating method based on cantilever balanced assembling
  • Support-free full-bridge segment prefabricating method based on cantilever balanced assembling
  • Support-free full-bridge segment prefabricating method based on cantilever balanced assembling

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0042] Example

[0043] The invention adopts cantilever assembly method and segmental prefabrication technology to manufacture unsupported prestressed concrete continuous rigid frame bridge, which mainly includes the following two parts: 1. Prefabrication stage: the beam part is manufactured by segmental prefabrication technology, and segmental or integral prefabrication technology is adopted Manufacturing bridge piers; 2. Assembling stage: first assemble the prefabricated piers; then install the prefabricated sections of the pier top to the top of the pier and consolidate it with the top of the pier; then use the cantilever assembly method to assemble symmetrically section by section along the bridge span direction Each segment is assembled by applying prestress to form a whole with the already formed part; finally, after the cantilever is assembled to the middle of the span, the post-cast concrete is used to close it, and the continuous prestress is stretched after closing to fo...

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 provides a support-free full-bridge segment prefabricating method based on cantilever balanced assembling. The support-free full-bridge segment prefabricating method based on cantileverbalanced assembling comprises a segment prefabricating stage and an assembling stage; in the assembling stage, prefabricated piers are assembled at first; then a pier top prefabricated segment is mounted to a pier top and is fixed to the pier top; segments are assembled symmetrically one by one along a bridge span direction by a cantilever assembling method, and when every segment is assembled, prestressing force is applied and thus the segment and a formed portion form a whole body; and finally, after a cantilever is assembled to a midspan, closure is implemented by post-pouring of concrete,and after closure is implemented, continuous prestressing force is tensioned to form the support-free prestressing force concrete continuous rigid frame bridge. By construction processes such as system transformation, a cast-in-situ scheme of a free-support-system bridge is changed into segmented assembling by the cantilever assembling method, the efficiency is improved greatly in the prefabricating stage and the assembling stage, the construction period is shortened, the construction processes are green, and the method is environmentally friendly.

Description

technical field [0001] The invention relates to the field of bridge engineering construction in the transportation infrastructure industry, in particular to a method for prefabricating a full bridge segment without supports based on cantilever balanced assembly. Background technique [0002] Because the general bridge support is damaged or aged, it needs to be replaced, which will affect the operation of the bridge. Therefore, the bridge management unit hopes to avoid the above troubles and try not to use the support. Therefore, the application range of full-bridge unsupported continuous rigid-frame bridges is becoming wider and wider. [0003] At present, the commonly used construction solution for bridges with continuous rigid frame system without supports is the cast-in-place method, that is, the construction is carried out by using the cast-in-place construction technology. The main steps are: erect a full-height bracket under the bridge, then install a formwork on the b...

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): E01D21/00E01D21/10
CPCE01D21/00E01D21/10
Inventor 孙峻岭雷文斌
Owner 瀚阳国际工程咨询有限公司
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