油罐地基双层强夯置换处理效果检测与分析  

DETECTION AND ANALYSIS OF BILAYER DYNAMIC COMPACTION REPLACEMENT TREATMENT EFFECT OF OIL TANK FOUNDATION

作　　者：马永峰 MA Yongfeng(Eastern China Environmental Geotechnology Branch, China Petroleum Engi. ＆ Construction Corporation,Shandong Qingdao 266071, Chin)

机构地区：[1]青岛中油岩土工程有限公司,山东青岛266071

出　　处：《低温建筑技术》2018年第7期94-98,共5页Low Temperature Architecture Technology

基　　金：中国石油工程建设公司科学研究与技术开发项目(CPECC2014KJ19)

摘　　要：采用底层强夯置换和顶层强夯半置换的分层强夯置换方法处理某1000万t/年炼油工程油罐地基,处理后,采用重型动力触探和超重型动力触探试验,对底层和顶层强夯半置换效果进行了检测;除重型动力触探和超重型动力触探试验手段外,顶层处理后,采用了静载试验测试地基承载特性。结果表明,底层和顶层强夯置换后,有效加固深度、地基承载力和压缩模量均达到了设计要求,岩土体工程特性得到了改善,依托工程地质条件下底层8000/12000k N·m强夯置换和底层5000k N·m强夯半置换有效加固深度分别不小于8m和5m。Layered dynamic compaction replacement, which included top-layer half-replacement and bottom-layer replacement, was used in oil tank foundation treatment of one 10 million tons/year oil processing project. With heavy dynamic penetration test and super-heavy dynamic penetration test, the compaction effect of bottom-layer replacement and top-layer half-replacement was analyzed. Except those two methods, the compaction effect of top-layer half-replacement were tested with static load test of composite foundation and single pier. The conclusions are as follows： After the dynamic replacement of the bottom layer and the top layer, the effective reinforcement depth, the bearing capacity of the foundation and the compression modulus all meet the design requirements, and the geotechnical engineering characteristics have been improved. Under the engineering geological conditions, the bottom layer is 8000/12000 k Nom. The effective reinforcement depth of the replacement and underlying5000 k Nom strong semi-replacement is not less than 8 m and 5 m, respectively.

关 键 词：分层强夯置换 动力触探 底层强夯置换 顶层强夯半置换 

分 类 号：TU319.56[建筑科学—结构工程]