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Title:
PRE-STRESSED BAILEY BEAM FOR REINFORCEMENT, AND CONSTRUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/137545
Kind Code:
A1
Abstract:
Disclosed are a pre-stressed Bailey beam for reinforcement and a construction method therefor. The Bailey beam is composed of Bailey frames (2, 3, 4, 5), stiffening rods (6), bolts (7), anchor bolts (8, 9, 10), a pre-stressed tendon (11) and anchors (12, 13), wherein the components of the Bailey bridge are all prefabricated in a factory, and are assembled and hoisted on site; and the pre-stressed tendon (11) is arranged in a lower chord (18) of the Bailey beam, and is anchored in the stiffening rods (6) at two ends thereof. The Bailey beam slides towards the two ends during pre-stress tensioning and is lifted as a whole, and pre-stress is also applied to a lower edge of the Bailey beam, thereby achieving the effects of having a inverted arch structure, closing cracks and reducing downward deflection. After tensioning is completed, sealing is performed by fixing a filler and a sealing steel plate (15) and by injecting a solidification body, such that the pre-stressed tendon (11) and the Bailey beam form a whole to be stressed together, thereby not only reducing a pre-stress loss, but also improving the durability of the pre-stressed tendon. The Bailey beam transmits a force based on a lever principle. Full use is made of the advantages of the Bailey beam and an external pre-stress, and by means of assembly-type construction, the Bailey beam is easy to assemble, has a short construction period and does not require traffic to be interrupted, and can be widely used in the field of the reinforcement of concrete structures.

Inventors:
WANG, Lei (No.960 2nd Section South Wanjiali Road, Tianxin DistrictChangsha, Hunan 4, 410114, CN)
WU, Binghui (No.960 2nd Section South Wanjiali Road, Tianxin DistrictChangsha, Hunan 4, 410114, CN)
MA, Yafei (No.960 2nd Section South Wanjiali Road, Tianxin DistrictChangsha, Hunan 4, 410114, CN)
ZHANG, Xuhui (No.960 2nd Section South Wanjiali Road, Tianxin DistrictChangsha, Hunan 4, 410114, CN)
ZHANG, Jianren (No.960 2nd Section South Wanjiali Road, Tianxin DistrictChangsha, Hunan 4, 410114, CN)
Application Number:
CN2019/071699
Publication Date:
July 18, 2019
Filing Date:
January 15, 2019
Export Citation:
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Assignee:
CHANGSHA UNIVERSITY OF SCIENCE & TECHNOLOGY (No.960 2nd Section South Wanjiali Road, Tianxin DistrictChangsha, Hunan 4, 410114, CN)
International Classes:
E01D22/00; E01D101/32
Attorney, Agent or Firm:
CHANGSHA RONG ZHI PATENT AGENCY (YAN Yong, No.308 Renmin Road Yuhua Distric, Changsha Hunan 1, 410011, CN)
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