沉管隧道带垄沟碎石垫层清淤施工方法研究

摘要

The dredging construction for the immersed tunnel with furrow gravel cushion foundation should be carried out.As a result,new type of dredging methods and equipments,with no disturbance to top of gravel cushion foundation,are developed for immersed tunnel with furrow gravel cushion foundation by analytical calculation,physical model test and numerical simulation considering construction environments and conditions.By adopting the above-mentioned methods and equipments,the dredging construction of the rubble furrow and furrow top can be carried out,rapid dredging construction can be realized and construction risk can be reduced.%为解决沉管隧道带垄沟碎石垫层基础清淤的问题,结合工程施工条件和施工工况,采用解析计算、物理模型试验和数值模拟计算相结合的方法,在不扰动碎石垫层顶部的基础上,研发新型的沉管隧道带垄沟碎石垫层基础清淤设备和施工方法,可以完成碎石垄沟和垄顶的清淤施工,保证碎石垫层基础回淤物的快速清除,降低工程施工受回淤影响的风险.