中文摘要：

为进一步研究主被动组合支护结构的协同工作机制及其变形规律，以预应力锚杆复合土钉墙为研究对象，采用理论分析与现场实测相结合的研究方法，分析在施T过程中各层土钉的受力及其与预应力锚杆轴力之间的关系，并考虑施工扰动、塑性变形、土钉约束和锚杆预应力约束等影响因素，采用改进的增量法逐层计算施工过程中墙体的水平位移。研究结果表明，土钉因被动受力，其轴力偏小，对水平位移影响较弱；预应力锚杆设置的位置不同，对水平位移的影响也不同，越靠近两端影响越大；预应力锚杆对水平位移的影响可以叠加，从优化设计角度考虑，预应力锚杆宜优先设置在影响大的位置。

英文摘要：

In order to further study the cooperative working mechanism and deformation of active- passive composite supporting structure, a pre-stressed anchor reinforced soil-nail wall was studied, and the relationship between soil-nail force and anchor force were analyzed through theoretical analy- sis and field measurement. The Improved Increment Method （IIM） were adopted to calculate the horizontal displacement of composite soil-nail wall in construction, and several influential factors in- eluding construction disturbance, plastic deformation, constraint from soil-nail and prestressing force of anchor were considered. The results show that axial force of soil-nail is relatively small because of the passive behavior, whose influence on the horizontal displacement is smaller. Different places of the prestressed anchors have different influence on the horizontal displacement, and the influence is larger when the prestressed anchors are set near the ends. Influence of prestressed anchors on the horizontal displacement can be superposed, so the prestressed anchors should be set in the place where their influence is significant when optional design is concerned.