Title:
CONSTRUCTION METHOD FOR STEEL-CONCRETE MAIN GIRDER OF CABLE-STAYED BRIDGE
Document Type and Number:
WIPO Patent Application WO/2023/016573
Kind Code:
A1
Abstract:
A construction method for a steel-concrete main girder of a cable-stayed bridge. The steel-concrete main girder is constructed in a multi-segmental manner. The construction method comprises the following steps: step 1, carrying out cast-in-place construction on a segment of concrete side main girder (1) on a main tower (100) and steel-concrete main girders on two sides of the main tower (100) by using a bracket (4); step 2, constructing the remaining midspan cantilever segments of steel-concrete main girders by using a front-pivot guyed form traveler (3); assembling a cantilever form traveler on the steel-concrete main girder, binding a steel bar, hoisting a steel cross beam (2), pouring concrete, applying a tensile prestress after the strength thereof reaches design requirements, and hoisting a bridge deck panel; step 3, moving the cantilever form traveler forward to the next segment, and repeating the construction process in step 2 to construct the next segment; step 4, constructing a side-span cast-in-place segment, using a floor support to construct the side-span cast-in-place segment, wherein the support uses a support scheme of a pile foundation and a Bailey beam; step 5, joining the side span; and step 6, joining the midspan. The construction method can ensure that the steel-concrete main girder has sufficient integrity and robustness, and can save construction time.
Inventors:
HE HONGSHENG (CN)
LI YONG (CN)
WU DEHUA (CN)
ZHANG JIESHENG (CN)
WANG ANHUI (CN)
LI WEIWEI (CN)
ZHANG ZHAO (CN)
WANG KUI (CN)
DU CHENXI (CN)
SU HAOCHUAN (CN)
LI YONG (CN)
WU DEHUA (CN)
ZHANG JIESHENG (CN)
WANG ANHUI (CN)
LI WEIWEI (CN)
ZHANG ZHAO (CN)
WANG KUI (CN)
DU CHENXI (CN)
SU HAOCHUAN (CN)
Application Number:
PCT/CN2022/112737
Publication Date:
February 16, 2023
Filing Date:
August 16, 2022
Export Citation:
Assignee:
CHINA RAILWAY NO 4 GROUP CO LTD (CN)
THE FIRST ENG CO LTD OF CTCE GROUP (CN)
THE FIRST ENG CO LTD OF CTCE GROUP (CN)
International Classes:
E01D21/00; E01D21/06; E01D21/10
Attorney, Agent or Firm:
BEIJING HECHUANG ZHIXIN PATENT AGENCY CO., LTD (CN)
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