隔振沟围护桩的稳定性分析及设计

Stability analysis and design of exterior protected pile in isolation trench

采用人工挖孔灌注桩支护形成隔振沟,同时发挥了其刚性隔振作用.在沟中填充柔性物质如珍珠岩等进行柔性吸能减振.分析了隔振沟围护桩周围土压力的分布及其稳定性,并给出了围护桩的设计参数,结果表明围护桩和隔振沟体系具有良好的隔振和减振效果.

Man-bored grouting pile is used as exterior protected structure for vibration isolation trench, which has a role of rigid vibration isolation. Soft materials, with a function of vibration energy absorption, are filled up in the isolation trench. Distribution of soil pressure around the exterior protected pile and its stability are analyzed, and the design parameters of pile are described. It indicates that the combined system of exterior protected pile and isolation have good effect on isolating vibration and can reduce vibration through the engineering application.