ABSTRACT

Stone columns (SCs) can reduce the seismic response of pile-supported wharves in liquefiable sites. A series of parametric studies were conducted to investigate the influence of SC diameter, SC space ratio, SC permeability, and typical earthquake characteristics on the seismic response of pile-support wharves and to assess the SC retrofit effect. The ratio of the SC space and diameter is found to play an important role in reducing the deck displacement. Based on the experimental results, the damage state of a pile support can be restricted to a potentially tolerable level using SCs in different liquefiable sites. Preliminary design suggestions are proposed for improving the seismic response of pile-supported wharves in earthquake-prone regions.

摘要

石柱 (SC) 可以降低可液化场地中桩支撑码头的地震响应。进行了一系列参数研究，研究了 SC 直径、SC 空间比、SC 渗透率和典型地震特征对桩式码头地震响应的影响，并评估了 SC 加固效果。发现 SC 空间和直径的比率在减少甲板位移方面起着重要作用。根据实验结果，在不同可液化地点使用 SC 可以将桩支撑的损坏状态限制在潜在的可容忍水平。提出了提高地震多发地区桩式码头抗震性能的初步设计建议。