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A platform for research: civil engineering, architecture and urbanism
Prefabricated lifting fish-belly corrugated steel web internal-prestress combined box beam and construction method thereof
The invention discloses a prefabricated lifting fish-belly corrugated steel web internal-prestress combined box beam. A fish-belly-shaped beam section is adopted in the midspan position of the box beam. The bottom flange of the fish-belly-shaped beam section is a concrete flange. A corrugated steel web is used as the web of the fish-belly-shaped beam section in the midspan position. Concrete box beams which are equally high are used as support beam sections. Internal-prestress tendons which are equally long are tensioned in a concrete box beam web of a support beam section of the lower flange of the midspan fish-belly-shaped beam section. Based on the prefabricated lifting fish-belly corrugated steel web internal-prestress combined box beam, a corresponding construction method is established, and the construction is safe, convenient and fast through the construction method. By means of the prefabricated lifting fish-belly corrugated steel web internal-prestress combined box beam and the construction method thereof, the rigidity of a beam body is improved substantially, the air exposure of prestressed cables of the corrugated steel web combined beam is avoided, the durability and reliability of a combined beam structure are improved substantially, and an obstacle for widely popularizing the corrugated steel web combined beam is eliminated.
Prefabricated lifting fish-belly corrugated steel web internal-prestress combined box beam and construction method thereof
The invention discloses a prefabricated lifting fish-belly corrugated steel web internal-prestress combined box beam. A fish-belly-shaped beam section is adopted in the midspan position of the box beam. The bottom flange of the fish-belly-shaped beam section is a concrete flange. A corrugated steel web is used as the web of the fish-belly-shaped beam section in the midspan position. Concrete box beams which are equally high are used as support beam sections. Internal-prestress tendons which are equally long are tensioned in a concrete box beam web of a support beam section of the lower flange of the midspan fish-belly-shaped beam section. Based on the prefabricated lifting fish-belly corrugated steel web internal-prestress combined box beam, a corresponding construction method is established, and the construction is safe, convenient and fast through the construction method. By means of the prefabricated lifting fish-belly corrugated steel web internal-prestress combined box beam and the construction method thereof, the rigidity of a beam body is improved substantially, the air exposure of prestressed cables of the corrugated steel web combined beam is avoided, the durability and reliability of a combined beam structure are improved substantially, and an obstacle for widely popularizing the corrugated steel web combined beam is eliminated.
Prefabricated lifting fish-belly corrugated steel web internal-prestress combined box beam and construction method thereof
CHEN QIFENG (author) / HAO TIANZHI (author) / GAO JIANMING (author) / QIU BO (author) / XU ZHAODONG (author) / WANG LONGLIN (author) / LUO YUEJING (author) / LI LITAO (author) / LI SHUFEN (author) / PENG RONG (author)
2015-12-23
Patent
Electronic Resource
English
IPC:
E01D
BRIDGES
,
Brücken
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