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

Construction method for assembling integral hollow slab bridge

A technology of hollow slab bridge and construction method, which is applied in the direction of erecting/assembling bridges, bridge construction, building structures, etc., can solve problems such as limited transmission of shear force, stress on single slabs, hidden dangers of bridge traffic safety, etc., and achieve simplification Prefabrication and construction technology, improved dynamic performance, and significant benefits

Inactive Publication Date: 2011-01-05
ZHENGZHOU UNIV
View PDF6 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since adjacent hollow slabs are only connected by rebar and concrete with rebate joints, the ability to transmit shear force is limited, and the transverse integrity along the bridge is poor, and cracks along the longitudinal direction of the bridge are prone to appear at the position of rebate joints, resulting in bumpy driving, thus affecting The normal use and durability of the bridge, when the situation is serious, the veneer will be stressed, burying hidden dangers to the safety of the bridge

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 assembling integral hollow slab bridge
  • Construction method for assembling integral hollow slab bridge
  • Construction method for assembling integral hollow slab bridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] Example: such as Figure 1-4 As shown, a construction method for assembling a monolithic hollow slab bridge comprises the following steps:

[0024] (1) Prefabricated prestressed hollow slab: prefabricated hollow slab in the prefabrication factory according to the design requirements. The sides of the hollow plate are processed into straight edges. Set three transverse partitions at the two ends and the mid-span of the hollow slab (the polystyrene foam inner film can be used to replace the traditional inner film to set the transverse diaphragm), and the transverse partition is arranged inside the transverse partition The design position of the stressed steel bar or the prestressed cable with sheath forms a transverse prestressed channel through the method of pre-embedded pipeline, and the pre-embedded pipeline can use metal bellows, iron pipe or plastic bellows. Concrete is poured, and longitudinal prestressed reinforcement is applied by pretensioning process.

[0025...

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 method for assembling an integral hollow slab bridge, which comprises the following steps of: prefabricating a hollow slab, processing the side of the hollow slab into a linear edge, arranging three diaphragm plates at the two ends and the mid-span position of the hollow slab, forming transverse prestressed pore ducts inside the diaphragm plates by a pipeline pre-burying method, and pouring hollow slab concrete; hoisting the hollow slab, and ensuring that the transverse prestressed pore ducts of the diaphragm plates of each hollow slab correspond one to one; and applying an external transverse pre-stressing force, making transverse prestressed steel bars or prestressed ropes with sheaths pass through the transverse prestressed pore ducts of the diaphragm plates of each hollow slab, and drawing the transverse prestressed steel bars or the prestressed ropes so that the side plates of the adjacent hollow slabs are tightly contacted and mutually jacked. When the transverse prestressed steel bars are adopted, cement paste is poured into the transverse prestressed pore ducts of each hollow slab; and when the prestressed ropes with sheaths are adopted, the pouring the cement paste is not needed. The method has convenient construction, and greatly improves the transverse integrity of the hollow slabs along the bridge.

Description

technical field [0001] The invention relates to a construction method for assembling an integral hollow slab bridge. Background technique [0002] At present, small and medium-span highway bridges with a single-span span of less than 20m usually adopt the structural form of prestressed concrete or reinforced concrete assembled hollow slab bridges. The hollow slab of this type of bridge is constructed in a prefabricated factory. The cross-section is usually in the form of a single-hole or double-hole cross-section. The pre-tensioning method is used to install prestressed steel bars along the longitudinal direction of the slab. The construction method is to hoist the prefabricated hollow slabs in place first, then pour concrete at the position of the grooved joints between adjacent hollow slabs, and connect the hollow slabs horizontally along the bridge to form a whole through the grooved steel bars and concrete. . Since adjacent hollow slabs are only connected by rebar and ...

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 Applications(China)
IPC IPC(8): E01D21/00E04C5/10
Inventor 葛素娟陈淮李静斌范永丰
Owner ZHENGZHOU UNIV
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