混凝土桩基础在水闸地基处理中防渗稳定性作用分析

Analysis of anti-seepage stability effect of concrete pile foundation in sluice foundation treatment

渗流破坏是影响水闸结构稳定的重要负面因素,目前常用的解决措施是采用混凝土桩基础进行地基处理。为研究混凝土桩基础的防渗作用原理和作用效果,以江苏省南京市秦淮河某水闸作为实例研究工程,借助迈达斯三维模拟计算软件,采用2组特征工况,对比天然地基和灌注桩处理地基下实例工程的渗透规律分布情况。研究结果显示,灌注桩处理措施能有效防渗、减小最大水头分布,同时还能兼顾水闸自身结构稳定。

Seepage failure is an important negative factor affecting the stability of sluice structure. At present,the common solution is to use concrete pile foundation for foundation treatment. In order to study the anti-seepage principle and effect of concrete pile foundation,a sluice of Qinhuai River in Nanjing,Jiangsu province was taken as an example. With the help of Midas three-dimensional simulation software,two groups of characteristic working conditions were used to compare the seepage law distribution of practical engineering under natural foundation and cast-in-place pile treatment foundation. The research results showed that the treatment measures of cast-in-place piles could effectively prevent seepage,reduce the maximum water head distribution,and also take the structural stability of the sluice into account.