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- 저자 : Miaodi Qu (검색결과 1 건)
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Feng Huang,Ban Zhang,Xingchen Liu,Jinyang Xiang,Guoqing Wan,Miaodi Qu 한국강구조학회 2022 International Journal of Steel Structures Vol.22 No.1
The primary error sources of engineering design for bolted beam reaction system with large size are mainly from the deformation of structure, mechanical behavior of connection joints. In addition, the simplifi ed calculation method of bolted connection has not formed a unifi ed understanding. A vertical static load test was carried out in the laboratory, and the deformation laws of the reaction beam were analyzed to obtain the mechanical characteristics of the connection joints by controlling the defl ection of the reaction beam. The composite eff ect coeffi cient k l of the variable section panel structure was introduced to the theoretical solution of the defl ection of the variable cross-section beam. Simultaneously, the fi nite element method was employed to establish the detailed model of the beam reaction system. The mechanical behavior of the reaction beam and the bolted joint are extensively studied, and the simplifi ed method of bolted joint is improved. The bolted connection is simplifi ed as a semi-rigid joint, and then the theoretical formula is proposed to calculate the defl ection and deformation of the beam structure under bolted connection. The defl ection and deformation of the reaction beam by the test and theoretical formula are consistent. The results show that the theoretical formula can well calculate the defl ection and deformation of structure members under bolted connection.
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