国内外无填料振冲间距的设计原则对比

目前有关无填料振冲密实法相关原理和工程应用已有很多,但有关无填料振冲国内外标准的对比分析几乎没有。针对无填料振冲密实法在国内外标准设计条文的差异性,选取英国CIRIA协会标准C573、英国ICE协会标准、美国国防部军工手册和中国港口工程地基行业规范,对4种常用设计规范的条文进行对比分析。结果表明,英国CIRIA协会标准和美国国防部军工手册均提供较详细设计表格,指导性强;而中国港口标准和英国ICE协会标准则仅提供原则性规范和具体数值范围。同时基于科威特LNGI工程项目,比较不同间距设计方法在同一设计密实度要求下的差异性,为国内完善无填料振冲设计规范和工程应用提供参考。

Comparison of spacing design principle for vibro-compactionamong domestic and international standards

The application and principle of vibro-compaction has been widely introduced in many domestic and international projects,while the comparison of spacing design principle for vibro-compaction among domestic and international standards has not been seen commonly in previous literature.We select the four standards comprising C573 of BS CIRIA standard,specification for ground treatment of BS ICE standard,soil dynamic and special design aspects of American NAVFAC standard and Chinese code for soil foundation of port engineering for comparison.In accordance with comparison result,it can be concluded that the BS CIRIA standard and American NAVFAC standard provide specified design tables which ares more practical,while for BS ICE standard and Chinese code only provide general requirements or spacing ranges.Further,the four design methods have been applied in Kuwait LNGI project in order to analyze the differences of spacing obtaining from different standards under the same density requirement.Therefore,it can provide significantly reference for domestic standard revision or ground improvement regarding vibro-compaction.