基于协调变形的桩锚与土钉联合支护结构的设计计算

在桩锚与土钉联合支护结构的设计计算问题中,首先就要分析联合支护中桩锚结构和土钉结构所能承担的土压力.由于锚杆和土钉作用力的发挥依赖于基坑侧壁变形,因此研究桩锚与土钉联合支护结构中土压力的分配问题应考虑基坑开挖过程中侧移的发展进程,按协调变形来计算桩锚与土钉各自承担的土压力.通过对工程实例中基坑边壁侧移的计算,并与监测结果进行对比,验证了基于协调变形的联合支护结构的设计计算方法的合理性和工程适用性.

The Calculation and Design of the Combined Retaining Structure of Pile Anchor and Soil Nailing Based on Deformation in Coordination

Analyzing the earth pressure distribution between pile anchor structure and soil nailing structure is the first thing in the issue of calculation and design of the combined retaining structure of pile anchor and soil nailing.The action of anchor and soil nailing bring into play depending on the deformation of foundation pit.So the development of deformation during the construction of foundation pit should be thought of when studying the earth pressure distribution in the combined retaining structure.And the earth pressure of pile anchor and soil nailing should be calculated based on deformation in coordination.Through calculating the deformation of example foundation pit and contrasting with the result of survey,it proves the rationality and applicability of the calculation and design method of the combined retaining structure based on deformation in coordination.