Analytic Solution Box Structure
Shen jianhua(1,2),Cai jian(1),Ni guangle(3),He chunbao(1),Huang yansheng(1)
(1 Dept. of Civil Engineering South China University of Technology, Guangzhou China 510640)
(2 Guangdong Provincial Research Institute of Water Convervancy and Hydro Power, Guangzhou China 510610)
(3 Guangzhou Taiji Engineering CO.LTD Guangzhou China 510507)

Abstract: Based on the elastic thin plate theory, a box structure is divided into six mutually constrained thin plates with four sides simply-supported. Each plate is subjected to local forces on the plate and the unknown bending moment on the boundaries. According to compatible relationships of the rotation angles on the boundaries of rectangle thin plates，the unknown bending moment of each plate is obtained, so the analytic results of the box structure under random loads can be evaluated.
Keywords: box structure, compatible deformation, analytic solution.