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

Cast-in-place prestressed concrete continuous box girder one-time pouring and forming construction method

A concrete and prestressed technology, which is applied in the field of cast-in-place prestressed concrete continuous box girder one-time pouring and forming construction, can solve the problems of large safety hazards in the construction process, high cost of building platforms, and low construction efficiency

Inactive Publication Date: 2018-12-07
NINGBO CONSTR GRP
View PDF5 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a construction method of an assembled operating platform for pier column construction, so as to solve the technical problems of high platform cost, large safety hazards in the construction process, and low construction efficiency in the existing bridge column construction

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
  • Cast-in-place prestressed concrete continuous box girder one-time pouring and forming construction method
  • Cast-in-place prestressed concrete continuous box girder one-time pouring and forming construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] like Figure 1-2 As shown, the cast-in-situ prestressed concrete continuous box girder of the present invention is one-time pouring and forming construction method, comprising foundation treatment, bracket erection, base form, side form laying, support preloading, base form, side form adjustment, bottom, web plate And beam reinforcement, prestressed pipes, prestressed tendons, inner formwork, end formwork laying, roof reinforcement, prestressed pipes, prestressed tendons, roof reinforcement installation, concrete pouring, maintenance, prestressed tendon tensioning, grouting, anchor sealing , template, support removal, specifically include the following steps:

[0074] 1) Foundation treatment

[0075] For the support foundation, select an area with relatively flat terrain and landform conditions. If the bearing capacity of the foundation within the scope of the support foundation cannot meet the requirements of the design plan, foundation treatment must be carried out s...

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 cast-in-place prestressed concrete continuous box girder one-time pouring and forming construction method. The method includes the steps of foundation treatment, support erection, bottom mold and side mold laying, support pre-pressing, bottom mold and side mold adjustment, arrangement of bottom boards, webs and crossbeam reinforcing steel bars, prestressed pipelines and prestressed ribs, inner mold and end mold laying, arrangement of top board reinforcing steel bars, prestressed pipelines and prestressed ribs, top board reinforcing steel bar installation, concrete pouring and curing, prestressed rib tensioning, mud jacking and sealing anchorage, and formwork and support detachment. The problems of construction joints generated by a traditional construction processand transverse cracks of the jointing positions of flange plates and the webs can be solved, and the integral rigidity of a girder body is enhanced; the construction period of a continuous box girder is shortened, and the schedule of construction is quickened; and the use rate of a box girder formwork and steel pipe support transfer materials is increased, work efficiency is improved, treatmentof the construction joints is cancelled, erection and detachment work of supports in a box is reduced, working procedures are effectively switched, and expenditure of project management cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, and in particular relates to a one-time pouring forming construction method of a cast-in-place prestressed concrete continuous box girder. Background technique [0002] With the development of modern economy and technology and people's increasing demand for traffic conditions and transportation facilities, bridge engineering accounts for an increasing proportion of railways, expressways and municipal public transportation. People require standards for resources, environment and building performance. The construction of bridges is also constantly improving, and large-scale bridge construction is in full swing. In recent years, the box girder structure has gradually become popular, and many construction methods have appeared in the construction process. However, different methods should be selected according to different environments and seasons to improve the quality, safety and s...

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): E01D21/00E01D2/04
Inventor 叶剑伟谢伟光孙继文陈正新王彦芳俞毅
Owner NINGBO CONSTR GRP
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