Selection of four hoisting points for largespan steel trusses based on strain energy method
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    Abstract:

    The strain energy method is applied to hoisting point selection in structural hoisting, and the feasibility of this method is investigated. Based on the number of hoisting points, a structural analysis is carried out for each possible combination of hoisting points in the whole variable space of nodes. The strain energy corresponding to the each combination is obtained based on the member forces from the structural analysis. The combinations are sorted based on their magnitudes of strain energy, and the combination with the smallest strain energy is picked out. The structure needed to be hoisted is in a rational state when it has low strain energy. The combination with the smallest strain energy is treated as the best selection of hoisting points. Hoisting construction of a workshop in Chongqing was taken as an example and three construction conditions were considered. The commercial package ANSYS was used to conduct the structural analysis and obtain the strain energy. The best selections were verified by another software MADIS.

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姚刚,谢巍,居虎.基于应变能法的大跨度钢桁架四吊点选取分析[J].重庆大学学报,2009,32(9):1080~1085

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  • Received:April 27,2009
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