Title:
CONSTRUCTION METHOD FOR CONTINUOUS BEAM HAVING ASYMMETRICAL CROSS SECTION STIFFENED BY LARGE-SPAN ARCH
Document Type and Number:
WIPO Patent Application WO/2022/116394
Kind Code:
A1
Abstract:
A construction method for a continuous beam having an asymmetrical cross section stiffened by a large-span arch, comprising the following steps: S1: designing a counterweight balance load by using a preset method to balance the bending moment of an arch-stiffened continuous beam; and S2: using a preset scheme to complete unbalanced counterweight construction on the large-span arch-stiffened continuous beam. The beneficial effects comprise: under large-span asymmetric cross section load and mobile protection construction conditions, a large unbalanced moment generated at one end is prevented by means of balancing counterweights in sections and moving the counterweights, so as to prevent a large deviation in main beam linearity from occurring during the construction process, ensure the smooth closing of an entire bridge, and achieve the expected linearity of the main beam formed into the bridge; and the tensile stress of a cross section roof caused by the counterweights may be effectively reduced, thereby preventing the generation of cracks.
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Inventors:
LIU WENSHENG (CN)
LI FENGCHENG (CN)
FENG CHAO (CN)
LIANG PENG (CN)
SHANG YAXIN (CN)
SU LI (CN)
MIN KUN (CN)
XIE LEI (CN)
CHEN YUNMING (CN)
LI FENGCHENG (CN)
FENG CHAO (CN)
LIANG PENG (CN)
SHANG YAXIN (CN)
SU LI (CN)
MIN KUN (CN)
XIE LEI (CN)
CHEN YUNMING (CN)
Application Number:
PCT/CN2021/076553
Publication Date:
June 09, 2022
Filing Date:
February 10, 2021
Export Citation:
Assignee:
CHINA RAILWAY BEIJING ENG BUREAU GROUP NO 2 (CN)
International Classes:
E01D21/10
Foreign References:
| CN109629458A | 2019-04-16 | |||
| SU887696A1 | 1981-12-07 | |||
| CN109610327A | 2019-04-12 | |||
| CN109505267A | 2019-03-22 | |||
| CN105040594A | 2015-11-11 | |||
| CN112030780A | 2020-12-04 |
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