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以山西某在建拱桥为依托,对其采用的井筒式地下连续墙基础进行长期监测,研究了在不同工作状态下,井筒式地下连续墙各片墙所承受的轴力与侧摩阻力的分布规律,特别在正常工作荷载下,闭合墙基础的承载性状类似于端承摩擦墙。并结合土压力盒所测墙周土体作用于工程墙的土反力值,分析了承台与土芯之间的作用并不显著,且在运营阶段,墙内土芯对闭合墙的水平承载力贡献小,而外侧的上部表层土和浅层土对工程墙基础的水平承载力影响很大。
Based on an arch bridge under construction in Shanxi Province, the long-term monitoring of the underground continuous diaphragm wall foundation adopted by the company was conducted. The distribution of axial force and lateral frictional resistance of the diaphragm wall under different working conditions was studied Law, especially under normal working load, the bearing behavior of the closed wall foundation is similar to the end bearing friction wall. Combined with the soil reaction force measured by the earth wall around the wall, the effect between the cap and the soil core is not significant. In the operation phase, the horizontal load of the soil core on the closed wall The contribution of force is small, while the outer upper surface soil and shallow soil have a great influence on the horizontal bearing capacity of engineering foundation.