上海深坑酒店基于变形控制的高陡边坡加固设计研究

Research on reinforcement design of high and steep slope based on deformation control for InterContinental Shanghai Wonderland Hotel

结合上海深坑酒店建设项目边坡加固工程,探讨基于变形控制的边坡加固设计方法,通过引入三维动力有限单元法分析加固前后边坡变形特性及稳定性,验证加固方案的可行性。研究表明,采用预应力锚索+锚杆的加固方案能达到稳定性控制与变形控制的加固目的,加固后边坡位移明显降低,稳定性安全系数明显提高,满足抗震稳定性及变形控制要求。地震作用下,边坡加速度响应随边坡高度逐渐放大,土层的放大效应较岩层更为明显;岩层软弱结构面处边坡加速度响应放大较为明显。

Combined with the slope reinforcement engineering of InterContinental Shanghai Wonderland Hotel construction project,the slope reinforcement design method based on deformation control was discussed.By introducing three-dimensional dynamic finite element method to analyze the deformation characteristics and stability of slope before and after reinforcement,the feasibility of the reinforcement scheme was verified.The study shows that the reinforcement scheme of prestressed anchor cable and anchor rod can achieve the purpose of stability control and deformation control,and the slope displacement is obviously reduced and the stability safety factor is obviously improved after reinforcement,which meets the requirements of seismic stability and deformation control.The acceleration response of slope amplifies with slope height,and the amplification effect of soil layer is more obvious than rock layer.The acceleration response of the slope at the soft structural plane of rock stratum is obviously amplified.