逆作拱墙在边坡支护设计中的应用

贵阳渔安·安井温泉旅游城"未来方舟"B6组团环形车道边坡最大挡土高度为28m,支护结构采用拱形钢筋混凝土连续墙支护方案。支护结构充分利用逆作拱墙的空间受力特点,平面上土压力主要通过轴压力方式沿着拱轴方向传至两端先行施工的人工挖孔支护桩区段,支护结构效率较高。采用规范计算公式及施工模拟分析,对边坡的稳定性及受力进行计算分析。工程竣工后的位移监测结果表明,边坡支护结构变形满足设计要求。

Application of top-down constructed arched wall in slope supporting design

The maximum retaining height of the slope of the circular ramp is 28 m in the "Future Ark" B6 group of Yuan·Anjing hot spring tourist city in Guiyang. An arched reinforced concrete continuous wall system was adopted for the supporting structure. The supporting structure makes full use of the spatial mechanical characteristics of the top-down constructed arched wall. The earth pressure is mainly transmitted through the axial direction of the arch to the artificially excavated supporting pile sections that are constructed in advance at both ends, and the supporting structure has high efficiency. The standard calculation formula and construction simulation analysis were used to calculate and analyze the stability and stress of the slope. The displacement monitoring results after the completion of the project show that the deformation of the slope support structure meets the design requirements.