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

A Construction Technology of Segmentally Assembled Box Girder

A construction process and a technology for assembling boxes, which are applied in the erection/assembly of bridges, bridges, bridge construction and other directions, and can solve the problems of difficult control of assembly accuracy, complicated erection process and low stability.

Active Publication Date: 2017-08-01
CHINA RAILWAY FIRST GRP CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the downward type bridge erecting machine, the upward type bridge erection machine has the advantages of no need to lay running tracks, large lifting height, and convenient installation. However, the upward type bridge erection machine has the following defects: First, the overall installation height is high and stable Second, the requirements for the substructure of the bridge are high, specifically for the pier body structure of the bridge to be constructed, so as to meet the requirements of stability and support; third, the erection process is relatively complicated, and the pier needs to be installed in advance The top beam should be transported backwards, and the assembly sequence of the head and tail spans should be considered; fourth, the visibility of the girder section assembly process of the upward bridge erecting machine is poor, the assembly accuracy is not easy to control, and the linear adjustment is difficult

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
  • A Construction Technology of Segmentally Assembled Box Girder
  • A Construction Technology of Segmentally Assembled Box Girder
  • A Construction Technology of Segmentally Assembled Box Girder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0128] Such as figure 1 A construction process of segmentally assembled box girder is shown, the box girder to be constructed is a perforated beam, and each hole beam of the constructed box girder is composed of a plurality of box girder segments 1 assembled from back to front, and the box girder segment Section 1 is a reinforced concrete beam section;

[0129] When constructing the box girder to be constructed, the process is as follows:

[0130] Step 1. Box girder segment prefabrication: According to the conventional box girder prefabrication process, all box girder segments 1 used for assembling the constructed box girder are prefabricated in the prefabrication yard;

[0131] Step 2. Delivery of box girder segments: transport all box girder segments 1 in step 1 to the erection position of the box girder to be constructed by using a beam transport vehicle;

[0132] Step 3. Box girder erection: use the down-going bridge erecting machine to erect the constructed box girder, ...

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 technique for segmentally assembled box girders. The box girder to be constructed is a perforated girder, and each perforated girder is composed of a plurality of box girder segments assembled from the back to the front; As follows: 1. Prefabrication of box girder segments: Centrally prefabricate all box girder segments used to form the box girder to be constructed in the prefabrication yard; 2. Transport of box girder segments: transport all box girder segments to The erection position of the box girder under construction; 3. Box girder erection: use the descending bridge erecting machine to erect the constructed box girder. The descending bridge erecting machine includes the bottom horizontal support system, main girder system, longitudinal movement system, cantilever Cranes, assembly racks and assembly vehicles; 4. System conversion: system conversion will be carried out after the erection construction process is completed. The invention has the advantages of simple process steps, reasonable design, convenient construction, easy control of the construction process, good use effect, simple and rapid completion of the construction process of segmental assembled box girders, and easy guarantee of construction quality.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to a construction technique for segmentally assembled box girders. Background technique [0002] With the development of society, the bridge construction technology is not only innovating, the segmental assembled box girder construction has gradually become a kind of construction due to its advantages of fast construction speed, high degree of industrialization, high degree of automation, improved labor efficiency and strong environmental adaptability. The new construction technology, and the erection accuracy requirements of segmental assembled box girders are also greatly improved. [0003] The Second Wuhu Yangtze River Highway Bridge starts from Shijian, Wuwei County, Wuhu City, connects the North Yanjiang Expressway, passes through Cangtou and Dougou, crosses the Yangtze River at Jitou Mountain, ends at Fanchang Eshan, and connects with the completed Wuhu...

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 Patents(China)
IPC IPC(8): E01D21/00E01D21/06
CPCE01D21/00E01D21/06
Inventor 陈伟闫永涛雷金莉林俊安静国锋李飒轩向黎明黄瑞忠杨学成马祖桥吴洪波张磊罗命军
Owner CHINA RAILWAY FIRST GRP 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