椒江污水厂二期工程地基真空预压处理原位监测

In-situ Monitoring for Vacuum Preloading Treatment of Foundation in Second-phase Project of Jiaojiang Sewage Treatment Plant

台州市椒江污水处理厂二期扩建工程规模为10×104 m3/d,厂区主要受力土层的天然地基承载力较低,需进行地基处理。在总结一期地基处理方法(真空预压法)的基础上,对二期工程地基处理方法进行了优化,确定采用大范围真空预压(联合堆载)处理方法。为达到监控施工安全、检测加固效果、验证地基基础处理方案的合理性和实用性的目的,进行了施工监测。监测结果表明,加固后满足地基土承载力特征值90 kPa的设计要求,地基加固处理效果良好。

The capacity of the second-phase expansion project of Taizhou Jiaojiang WWTP was 10 × 10^4 m3/d. Because the natural foundation bearing capacity of factory main stress soil was low, the foundation treatment needed to be undertaken. Based on summarizing the foundation treatment method （vacuum preloading） in the first-phase project, the foundation treatment method in the second-phase pro- ject was optimized, and the large area vacuum preloading method （combined heap load） was determined to be used. To monitor the construction safety, inspect the reinforcement effect and verify the rationality suits indicate that after the reinforcement, the bearing capacity of foundation quirement of 90 kPa, and the foundation reinforcement effect is good. was undertaken. The resoil meets the design requirement of 90 kPa, and the foundation reinforcement effect is good.