Analysis on soil and lattice framed anchor structure interaction

作者：Xu, Ying Zi^*; Qu, Ji Li; Ge, Xiu Run; Tang, Hui Ming

来源：Journal of Shanghai Jiaotong University, 2005, 39(5): 742-745.

• 3D finite element method simulation
• Beam-soil interaction
• Lattice beam
• Lattice frame anchor structure

A three-dimensional finite element method was adopted to model the interaction of soils and lat-tice frame anchor structure and study the effect of the lattice frame anchor structure in landslide correc-tion. Reacted by the lattice frame anchor structure, loose soil layer’s compressure stress was more uniform and soil mass strength was improved, soil tensive stress was concentrated on the peak of cross beam and the plastic zone of soil only appears in topsoil. The numerical results show that the deformation modulus of soil mass does not affect the distribution and stress very much. The prestressed anchor reinforcing the loose soil has the same effect as the rock mass. Compared with the numerical and the analytical method results, it indicates that the tendency of the beam’s analytic solution is right. The solution of finite element method is safer than that of analytical method. A coefficient of safety (1.3) is recommended for the design based on the analytical solutions. The same design is recommended for all beams in the different direction and the design for the internal beam is also the same as that for the external beam.

• 出版日期2005
• 单位上海交通大学