储油库地基高能级强夯+灌注桩处理分析  

Analysis on Treatment Effect of Using High Energy Level Dynamic Compaction and Bored Piles in Oil Depots Foundation

作　　者：马永峰 史宣陶[2] 周丁恒[3] 易礼 

机构地区：[1]中国石油天然气华东勘察设计研究院,山东青岛266071 [2]中铁二院工程集团有限责任公司,四川成都610031 [3]慕尼黑工业大学,德国慕尼黑85748 [4]上海申元岩土工程有限公司,上海200040

出　　处：《石油工程建设》2016年第1期21-26,共6页Petroleum Engineering Construction

基　　金：中国石油工程建设公司科技项目(CPECC2011KJ22)

摘　　要：以珠海高栏岛成品油储备库地基处理工程为例,对全场地18 000 k N·m高能级强夯+关键建筑区域灌注桩的地基处理方案进行研究。在平板载荷试验、重型动力触探、多道瞬态面波及土工试验的基础上,分析了18 000 k N·m高能级强夯加固处理效果,并完成了灌注桩的低应变动力测试、钻芯法试验、超声波透射及单桩静载荷试验,同时对灌注桩桩身质量及桩基处理效果进行了检测与分析。分析结果表明,场地经过强夯和灌注桩加固处理后,地基承载力和压缩模量满足设计要求;在依托工程地质条件下,该强夯能级的有效影响深度为20 m左右;此外,在实际施工中,应注意检测结果反映的软弱区域,适当地补充后续加固措施,以达到工程设计及安全性要求。该工程地质条件下采用的地基处理方法可为后续类似工程提供借鉴与参考。Based on the foundation treatment engineering of the refined oil depots located in Gaolan Island, Zhuhai City, the treatment scheme of using dynamic compaction of 18 000 kN.m level for the whole petrochemical site and bored piles for the key building area was introduced in detail. Based on multi-channel transient surface wave test, heaw dynamic penetration test, plate load test and laboratory test, the compaction effect was analyzed. Low strain dynamic test, core drilling method, ultrasonic transmission and static load test of single pile were carried out. With results of those methods, bored pile quality and pile foundation treatment effect were tested and analyzed. Some conclusions have been drawn. The foundation bearing capacity and compression modulus have reached the design standard after dynamic compaction and bored pile treatment. The effective influence depth resulted from 18 000 kN. m energy level, which was about 20 m, was proposed under this geotechnical condition. Besides, some later measures should be carried out to satisfy the design foundation bearing capacity according to the soil layer condition and test results.

关 键 词：储油库 地基处理 强夯 高能级 灌注桩 

分 类 号：TU472.31[建筑科学—结构工程] TE972[建筑科学—土工工程]