锚杆格构梁模型试验及格构梁内力计算

Model tests of the lattice beam anchor and the internal force calculation of the lattice beam

在锚杆格构梁室内模型试验的基础上,对格构梁的受力特点及规律进行了探讨。试验在坡体后缘加载,通过在格构梁上布设压力盒得出了格构梁底部土体压力的分布规律及锚杆上粘贴的应变片测试了锚杆的受力情况,并采用半无限体弹性地基梁理论对锚杆格构梁的内力进行了计算。

This paper discusses the stress characteristics and rules of the anchor lattice beam based on the indoor model tests. This test is conducted by loading on the tailing edge of the slope, getting the bottom soil press of the lattice beam and the strain distribution of the anchor by the pressure cell putted on the lattice beam and the strain gauge putted on the anchor. The stress of the anchor lattice beam is computed using the semi-infinite body elastic foundation beam theory. The results show that the foundation computing model especially approaches the true force condition of the lattice girder. They can be used as the preferred method.