某高原铁路桥隧过渡段穿越不稳定斜坡体整治技术研究

Study on Treatment Technology of a Plateau Railway Bridge Tunnel Transit Section Crossing Unstable Slope Body

对某高原铁路桥隧相连工程穿越不稳定斜坡体进行研究,分析了斜坡体失稳的原因,基于传递系数法分别计算其天然工况下和地震工况下的坡体稳定系数以判定坡体的稳定性,并求得坡体推力。结合计算结果,对该斜坡体采取抗滑桩、桩间土钉墙和桩顶锚索等综合整治措施,有效提高了斜坡体的稳定性,保证了工程安全可靠,为工程设计和施工提供了经验。

The unstable slope body crossed by a plateau railway bridge tunnel connection project was studied and the reasons for the instability of the slope body was analyzed.Based on the transfer coefficient method,the slope stability coefficients under natural and seismic conditions were calculated to determine the stability of the slope and then obtained the thrust of the slope.Combined with the calculation results,comprehensive treatment measures such as anti-slide piles,soil nailing wall between piles and pile-top anchorage were taken for the slope,which effectively improved the stability of the slope body,ensured the safety and reliability of the project and provided experience for engineering design and construction.