揭阳潮汕机场工程地基处理工程监测分析

为给揭阳潮汕机场地基施工中提供相关资料及指导性建议和措施,分别对原地基沉降、填筑土分层沉降和土体内孔隙水压力进行监测,监测频度采用施工填筑期每层填筑前后观测1次,施工间歇期为2~3 d观测1次,施工完成后2个月内7 d观测1次,等、超载预压期7 d观测1次,等、超载预压后期半个月或1个月观测1次,并对监测结果进行分析。结果表明,随着填筑高度的增加,自上至下分层沉降环的沉降值依次减小,由填筑荷载对原地基产生的附加应力也在逐渐增大,填筑体内部的孔隙水压力有逐渐增大的趋势,停工过程中孔隙水压力基本保持稳定。用排水固结法处理的地基,须考虑填筑至极限高度前后地基承载力,稳定观测应从填筑速率、垂直沉降和水平位移随时间变化情况进行分析,采取相应措施。

Monitor and Analysis on Foundation Treatment of Chaoshan Airport in Jieyang

In order to provide some appropriate references and recommendations for the foundation treatment of Chaoshan airport in Jieyang,the original foundation settlement,the settlement in layers of the embankment earth and the pore water pressure in earth mass are monitored,and the monitored results are analyzed.The monitoring methods are introduced here,the processes of foundation treatment are discussed,and the corresponding measures are put forward,so as to ensure the security and stability in the foundation construction of Chaoshan airport.