Login| Sign Up| Help| Contact|

Patent Searching and Data


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 (CN)
WU BINGHUI (CN)
MA YAFEI (CN)
ZHANG XUHUI (CN)
ZHANG JIANREN (CN)
Application Number:
CN2019/071699
Publication Date:
July 18, 2019
Filing Date:
January 15, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
UNIV CHANGSHA SCIENCE & TECH (410114, CN)
International Classes:
E01D22/00; E01D101/32
Foreign References:
CN108103965A2018-06-01
CN202265780U2012-06-06
CN105887702A2016-08-24
CN206267560U2017-06-20
CN102535355A2012-07-04
KR100664698B12007-01-04
KR20120015197A2012-02-21
Attorney, Agent or Firm:
CHANGSHA RONG ZHI PATENT AGENCY (410011, CN)
Download PDF: