基于排水抗液化理论的碎石桩在某港口工程的应用

排水是碎石桩重要的抗液化功能之一,但我国工程界的排水抗液化运用较少,理论研究及工程经验不足。回顾了排水抗液化理论的发展历史,总结不同学者的排水抗液化理论的关键要点,指出井阻是排水抗液化法必须考虑的不利因素。某强震区港口工程成功运用排水法碎石桩解决了液化难题。详细介绍该工程的碎石桩设计方案及计算方法,总结桩体材料粒径级配的确定方法,对比不同成桩工艺的优缺点,并对排水抗液化碎石桩的质量检测方法提出建议。

Application of stone column for anti-liquefaction based on drainage theory in a harbor project

Drainage is one of the important anti-liquefaction functions of stone column,but there are few applications of anti-liquefaction based on drainage function in domestic engineering industry,and theoretical research and engineering experience are insufficient.This paper reviews the development history of anti-liquefaction based on drainage theory,summarizes the key points of different scholars anti-liquefaction based on drainage theory,and points out that the unfavorable well resistance must be considered in the methods of anti-liquefaction based on drainage.A port project in a high-seismicity area has successfully solved the liquefaction by using stone columns as their drainage function.The design program and calculation method of stone column in this project are introduced in detail.The method for determining the particle size gradation of stone column materials is summarized.The advantages and disadvantages of different stone column processes are compared,and the quality inspection methods for stone column of anti-liquefaction based on drainage theory are proposed.