Blocking-type bridge deck slab wet joint connecting form

A technology of wet joints and bridge decks, which is applied to bridges, bridge construction, bridge parts, etc., can solve the problems of slowing down the construction speed, being unable to effectively prevent the generation and expansion of cracks, and increasing construction costs, so as to speed up the construction speed , reduce the dosage, and prevent the cracking of wet joints

Pending Publication Date: 2018-10-26
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wet joint connection construction between the prefabricated bridge decks currently used cannot effectively prevent the generation and propagation of cracks
In addition, in order to ensure the strength of the commonly used wet joints with straight bar la

Method used

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  • Blocking-type bridge deck slab wet joint connecting form
  • Blocking-type bridge deck slab wet joint connecting form
  • Blocking-type bridge deck slab wet joint connecting form

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0026] This embodiment discloses a wet joint connection form of segmented bridge decks, which includes a plurality of prefabricated concrete bridge decks 1 erected on longitudinal girders.

[0027] see figure 1 , 2 and 3, a cuboid is removed from the side near the wet joint of the precast concrete bridge deck 1 to form an alveolar 101 . Step-shaped wet joints 3 along the bridge direction are formed at intervals between two adjacent precast concrete bridge decks 1 .

[0028] The side of the precast concrete bridge deck 1 near the wet joint is provided with an upper layer of embedded reinforcement 2 and a lower layer of embedded reinforcement 6 extending to the outside of the precast concrete bridge deck 1 . Both the upper layer embedded steel bars 2 and the lower layer embedded steel bars 6 include a plurality of bars arranged at intervals along the direction of the bridge. The end of the overhanging portion of the upper pre-embedded steel bar 2 is bent to form a single ring...

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PUM

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Abstract

The invention provides a blocking-type bridge deck slab wet joint connecting form. A wet joint structure comprises a plurality of prefabricated concrete bridge deck slabs erected on longitudinal beams; a step-shaped wet joint in the direction along a bridge is formed between every two adjacent prefabricated concrete bridge deck slabs in a spaced mode; and the sides, close to the wet joints, of theprefabricated concrete bridge deck slabs are provided with upper-layer pre-embedded steel bars and lower-layer pre-embedded steel bars which all extend to the outer sides of the prefabricated concrete bridge deck slabs; super-strength engineered cementitious composites (ECC) are poured into the wet joints in a cast-in-place mode; and the every two adjacent prefabricated concrete bridge deck slabsare connected into a whole through adjacent wet joint concrete. According to the wet joint structure, the ability of transmitting shear force and bending moment of the wet joints is improved, and generating and expansion of cracks at the wet joints can be effectively prevented.

Description

technical field [0001] The invention relates to the technical field of bridge structures, in particular to a bridge deck wet joint structure. Background technique [0002] Pre-bridge construction speed, especially the time for bridge replacement and bridge repair, has become a key issue in reducing the time of interruption to traffic and trade. A promising system for rapid construction is the prefabricated bridge. This type of bridge is prefabricated in the factory, and transported to the construction site to connect the prefabricated bridge decks through wet joints, and the prefabricated bridge decks are transmitted through wet joints. [0003] The prefabricated bridge deck system avoids the scaffolding, formwork erection and concrete pouring and maintenance on the construction site, greatly reduces the construction time and improves the construction speed. Moreover, since the prefabricated bridge deck is prefabricated in the factory, the pouring and curing conditions are...

Claims

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Application Information

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IPC IPC(8): E01D19/06E01D21/00
CPCE01D19/067E01D21/00Y02A30/30
Inventor 狄谨韩斌秦凤江尹志伟
Owner CHONGQING UNIV
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