振冲与充水预压综合处理大型油罐软地基工程实例综述

Summary of project examples of the comprehensive treatment of soft foundation for large oil tanks through vibration-impact and prepressing by filling water

本文综述位于软土地基上的10项储罐工程（1000～50000m3）、40台油罐建设中采用的振冲法与充水预压法综合处理软地基技术，由振冲碎石桩单（群）桩复合地基静载试验、现场原位测试结果的对比分析可知：加固后的复合地基承载力提高了0．6～1倍、沉降量减少了约三分之一，并能提高地基土的抗液化能力。

This paper summarizes on the comprehensive treatment technique of soft foundatbo for 10 items of storage tank projects-40 oil tanks through vibration-impact and prepressing by filling water. It is shown by comparing and analyzing the results of static loading tests on composite foundation through vibrating and impacting single (group) rubble pile(s), and the results of original site tests that the loading capacity of the consolidated composite foundation is increased by 0. 6 to 1 time, and the settlement is decreased by 1/3. Also the liquidation - resistance ability is increased.