简阳市沱西快速路高路堑边坡高压铁塔支挡设计

Retaining Design of High-voltage Tower on High Cutting Slope of Tuoxi Expressway in Jianyang

针对简阳市简州临港经济区沱西快速路高路堑边坡高压电塔的支挡设计方案进行比选,推荐采用预应力锚索单排桩支护方式来支护边坡,并采用有限元方法对该支护方案进行验证。结果表明:所采取的支护方案稳定性验收安全系数为2.313,高压电塔控制性指标杆塔结构倾斜度为0.105%,均符合规范要求,该支护方案能保障道路及高压电塔的运营安全;对类似高路堑放坡困难地段,采用预应力锚索抗滑桩支护可有效控制坡顶地面的沉降作用。

By the comparison of retaining design schemes for high-voltage tower on a high cutting slope of Tuoxi Expressway in Jianzhou Harbor Economic Zone of Jianyang,the prestressed anchor cable single-row pile support method is recommended to retain the slope.And this support scheme is verified by a finite element method.The results shows that the stability acceptance safety factor of the adopted support scheme is 2.313,and the control index inclination of high-voltage tower structure is 0.105%,which can all meet the specification requirements.This support scheme can ensure the operational safety of the road and the high-voltage tower.The prestressed anchor cable anti-slide pile support to be used can effectively control the ground settlement of the slope top in the similar high cutting slope sections.