土钉墙水平位移简化计算方法

Simplified Calculation Method of Horizontal Displacement of Soil Nailing Wall

土钉墙由于其经济、施工简单,已成为目前基坑工程中的一种主要支护形式。目前还没有一种比较有效的土钉墙的位移计算方法。文章在总结前人对土钉墙内力和变形的研究成果基础上,从力的平衡与转换的思路出发提出了一种土钉墙的位移简化计算方法,该方法根据土钉与开挖面的距离分配释放力增量,与土钉力的真实值更为接近,并结合实际工程案例,采用实际监测数据和简化计算结果对其进行对比分析,表明了该简化计算方法的可靠性,具有十分重要的理论意义和实践意义。

Because of its economy and simple construction,soil nailing wall has become a main support form in foundation pit engineering.At present,there is no effective method to calculate the displacement of soil nailing wall.Based on the summary of previous research results on internal force and deformation of soil nailing wall,proposes a simplified calculation method of displacement of soil nailing wall from the idea of force balance and transformation.The method allocates release force increment according to the distance between soil nailing and excavation face,which is closer to the real value of soil nailing force.The comparison and analysis between the actual monitoring data and the simplified calculation results show that the simplified calculation method is reliable and has very important theoretical and practical significance.