ANALYSIS OF INTERNAL FORCES OF GRILLAGE FLEXIBLE SLOPE SUPPORTING STRUCTURE WITH PRESTRESSED ANCHORS CONSIDERING THE TORSIONAL EFFECTS AMONG BEAMS AND COLUMNS
Aiming at the deficiency of foundation opposite force distribution hypothesis of the existed calculation model, a method, using bar system finite element, adopting the linear elastic Winkler model that can consider the interaction between the foundation beams and the soils,considering the torsional effects among beams and columns, is proposed to calculate the frame foundation beams with prestressed anchors used in reinforced slopes. An engineering example is calculated with the method, in which the distribution laws of the internal forces including bending moments and shear forces of frame beams and columns are analyzed, and the analytical results show that the torsional effects among beams and columns can be ignored in the internal forces calculation of frame. Moreover, the design benchmarks for horizontal beam and vertical column arc propounded.Hence, when the calculating element selected is reasonable, it is feasible to disassemble the frame system into a series of independent beams whose internal forces are calculated according to the theory of continuous beam.
Slope engineering Frame Flexible slope supporting structure Torsional effect Bar system FEM Internal force analysis
Yong Zhou Yan-Peng Zhu
School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, P.R. China School of Civil Engineering,Lanzhou University of Technology, Lanzhou 730050, P.R. China
国际会议
第十届国际结构工程青年学者研讨会(The Tenth International Symposium on Structural Engineering for Young Experts)
长沙
英文
1029-1035
2008-10-19（万方平台首次上网日期，不代表论文的发表时间）