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Construction method for steel-concrete composite girder
The invention discloses a construction method for a steel-concrete composite girder segment. The method comprises the steps that 1, the steel-concrete composite girder segment is manufactured in a factory; 2, a deck derrick crane is assembled on site to be in place and adjusted, meanwhile, the steel-concrete composite girder is transported to a construction site from the factory; 3, the steel-concrete composite girder segment is vertically prefabricated; 4, a hoisting operation is conducted on the steel-concrete composite girder; 5, a stiff skeleton is installed; the steel-concrete composite girder is fixed to built-in fittings on a suspension poured concrete box girder in a welded mode through structural steel; 6, closure segment construction is conducted; closure segment reinforced steel colligation, formwork installation, pre-stressed tendon installation and closure segment concrete pouring construction between the steel-concrete composite girder and the concrete box girder are conducted; 7, bridge girder pre-stress construction is conducted; when closure segment concrete reaches the design strength, steel-concrete composite girder pre-stress tensioning and mud jacking are conducted, and the deck derrick crane and steel-concrete composite girder constraints are removed. The construction method for the steel-concrete composite girder can not only guarantee the construction quality, but also can save the cost and shorten the construction period.
Construction method for steel-concrete composite girder
The invention discloses a construction method for a steel-concrete composite girder segment. The method comprises the steps that 1, the steel-concrete composite girder segment is manufactured in a factory; 2, a deck derrick crane is assembled on site to be in place and adjusted, meanwhile, the steel-concrete composite girder is transported to a construction site from the factory; 3, the steel-concrete composite girder segment is vertically prefabricated; 4, a hoisting operation is conducted on the steel-concrete composite girder; 5, a stiff skeleton is installed; the steel-concrete composite girder is fixed to built-in fittings on a suspension poured concrete box girder in a welded mode through structural steel; 6, closure segment construction is conducted; closure segment reinforced steel colligation, formwork installation, pre-stressed tendon installation and closure segment concrete pouring construction between the steel-concrete composite girder and the concrete box girder are conducted; 7, bridge girder pre-stress construction is conducted; when closure segment concrete reaches the design strength, steel-concrete composite girder pre-stress tensioning and mud jacking are conducted, and the deck derrick crane and steel-concrete composite girder constraints are removed. The construction method for the steel-concrete composite girder can not only guarantee the construction quality, but also can save the cost and shorten the construction period.
Construction method for steel-concrete composite girder
LIU DACHENG (author) / JU JIAYUAN (author) / HAO TIEBAO (author) / DING YANSHU (author) / LUO HAO (author) / CHEN SHENG (author) / XUE JIE (author)
2015-06-24
Patent
Electronic Resource
English
IPC:
E01D
BRIDGES
,
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