论文部分内容阅读
为研究双绞合六边形钢丝网加筋土挡墙的受力、变形特性,对潭衡(湘潭-衡阳)西线高速公路K124+340断面组合式面板双绞合六边形钢丝网加筋土挡墙进行了现场试验,测试了竖向土压力、水平土压力、筋材拉应变分布规律和格宾箱变形规律。结果表明:在筋材长度方向上,竖向土压力在挡墙下部呈双峰型分布,而在上部呈单峰形分布;墙背水平土压力沿墙高呈非线性分布,最大值发生在墙高约1.5 m处,实测水平土压力小于主动压力;筋材应变在筋长方向上呈非线性分布,各层筋材的应变分布模式不相同;筋材的变形主要发生在施工期,格宾箱的变形呈鼓胀式。
In order to study the force and deformation characteristics of twisted reinforced hexagonal wire mesh reinforced earth retaining wall, the effect of deformation and deformation on the cross-linked hexagonal wire mesh of combined K124 + 340 cross-section panel of Xiangtan Expressway (Xiangtan-Hengyang) Reinforced earth retaining wall was tested in the field. The vertical earth pressure, horizontal earth pressure, tensile strain distribution of tendon and deformation of gabion box were tested. The results show that vertical soil pressure has a bimodal distribution in the lower part of the retaining wall and a unimodal distribution in the longitudinal direction of the reinforcement. The horizontal pressure of the horizontal wall wall is non-linearly distributed along the wall height, and the maximum value occurs in the wall height At about 1.5 m, the measured earth pressure is less than the active pressure. The strain of the tendons is non-linear in the longitudinal direction of the tendons. The strain distribution patterns of the tendons are not the same. The deformation of the tendons occurs mainly in the construction period. The deformation is bulging.