Bidirectional prefabricated segment splicing construction method for large-sized underpass

A large-size, large-segment technology, which is applied in the field of two-way prefabricated segmental assembly of large-scale underpasses, can solve problems such as increased construction difficulty, high labor intensity, and slow progress, and achieves construction quality assurance, reduced interference, and The effect of speeding up the construction progress

Active Publication Date: 2015-10-28
XIAMEN MUNICIPAL ENGINEERING DESIGN INSTITUTE CO LTD
View PDF6 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the progress of the cover-excavation method or the new Austrian method is slow, l

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0043] Example 1

[0044] Such as Figure 1-4 As shown, the closed prefabricated section is a single-hole prefabricated section, which includes an inverted U-shaped prefabricated section 1, U-shaped prefabricated section 2, shear key 3, shear keyway 4, embedded steel plate 5, corrugated The lower end of the inverted U-shaped prefabricated section 1 and the upper end of the U-shaped prefabricated section 2 are matched and spliced. The splicing surface adopts a shear key 3 and a shear keyway 4 to cooperate. The embedded steel plate 5 is set at the end of the inverted mountain precast section 1 and the mountain precast section 2, and the bellows 6 is set at the right angle of the inverted U-shaped precast section 1 and the U-shaped precast section 2 The steel plate waterstop 7 is arranged inside the inverted U-shaped prefabricated section 1 and the U-shaped prefabricated section 2.

[0045] The longitudinal single section of the single-hole prefabricated section is 3m long, 3.6m high,

Example Embodiment

[0061] Example 2

[0062] Such as Figure 5-9 As shown, the closed prefabricated section is a double-hole prefabricated section, which includes an inverted mountain-shaped prefabricated section 8, a mountain-shaped prefabricated section 9, a shear key 3, a shear keyway 4, embedded steel plate 5, corrugated Pipe 6 and steel plate waterstop 7, the lower end face of the inverted mountain-shaped precast section 8 is matched and spliced ​​with the upper end face of the mountain-shaped precast section 9, and the splicing surface adopts the shear key 3 and the shear keyway 4 to cooperate, The embedded steel plate 5 is arranged at the end of the inverted mountain-shaped prefabricated section 8 and the mountain-shaped prefabricated section 9, and the bellows 6 is arranged at the inverted mountain-shaped prefabricated section 8 and the mountain-shaped prefabricated section 9 At a right angle, the steel plate waterstop 76 is arranged inside the inverted mountain-shaped prefabricated section

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 bidirectional prefabricated segment splicing construction method for a large-sized underpass and belongs to the technical field of traffic engineering. A closed frame structure of the underpass is formed through splicing by adopting the prefabricated segment splicing construction method. Shear keys are arranged on longitudinal splicing surfaces and vertical splicing surfaces respectively. Splicing seams are bonded through structural adhesives. Pressure is formed for vertical splicing by means of self-weight. The vertical splicing seams are provided with connecting steel plates. The connecting steel plates are welded to pre-embedded steel plates of upper segments and lower segments after bonding is completed. Temporary pre-stressing force is set for longitudinal splicing. Large-segment post-tensioning permanent pre-stressing force is longitudinally formed, so that the integrality of each large segment is guaranteed for a long time. Factory-like prefabrication of the prefabricated segments is adopted and carried out in synchronization with excavation of a foundation pit. Thus, certain-scale urban road reconstruction bringing traffic interference seriously influencing production and life in the construction period is carried out smoothly, the construction duration is greatly shortened, the on-site construction progress is promoted, the number of construction procedures of on-site formwork erection, reinforcing steel bar cutting, binding and welding, concrete pouring and the like is substantially reduced, and dust and noise pollution to perimeter zones is reduced.

Description

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

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
Owner XIAMEN MUNICIPAL ENGINEERING DESIGN INSTITUTE 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