基于原位测试的深层密实法地基处理检测验收  

Detection and acceptance of foundation treatment by compact method based on in-situ test

作　　者：王德咏[1,2,3] 梅涛涛 王婧 邱青长[1,2,3] 梁小丛 WANG De-yong;MEI Tao-tao;WANG Jing;QIU Qing-chang;LIANG Xiao-cong(CCCC Fourth Harbor Engineering Institute Co.,Ltd.,Guangzhou 510230,China;Key Laboratory of Environmental Protection&Safety of Communication Foundation Engineering,CCCC,Guangzhou 510230,China;Southern Marine Science and Engineering Guangdong Laboratory,Zhuhai 519082,China)

机构地区：[1]中交四航工程研究院有限公司,广东广州510230 [2]中交交通基础工程环保与安全重点实验室,广东广州510230 [3]南方海洋科学与工程广东省实验室(珠海),广东珠海519082

出　　处：《水运工程》2021年第8期190-195,共6页Port & Waterway Engineering

摘　　要：境外大面积无黏性土地基常用动力密实法进行加固处理,检测以静力触探试验(CPT)或标准贯入试验(SPT)为主。我国规范一般根据设计要求直接给出验收需要的锥尖阻力qc值或标贯击数N值,境外地基处理工程验收则不同。对比了中外地基处理密实法设计及验收思路,总结归纳了常用的原位测试指标(qc和N)与土体的相对密实度的关系。以境外工程为例,提出了无黏性土验收准则的思路与流程,建立了基于qc和N的密实地基验收曲线。可为境外水运工程地基处理检测验收提供参考。The large-area hydraulic sand ground abroad was usually improved by the dynamic compaction method, and its detection was based on the static cone penetration test(CPT)or the standard penetration test(SPT). Chinese relevant standards generally directly give the cone tip resistance qc value or the standard penetration number N value as acceptance index, while the acceptance criteria of overseas ground improvement projects is different. The design and acceptance ideas of compaction methods for ground improvement at home and abroad were compared, and the relationships between the in-situ test indicators(qc and N)and the relative compactness of the soil were summarized. Taking overseas projects as examples, the idea and process of acceptance criteria for non-cohesive ground improvement were proposed, and the acceptance curve for dense ground based on qc and N was established. It can provide a reference for the inspection and acceptance of ground improvement of overseas water transportation projects.

关 键 词：欧美标准 地基处理 静力触探试验 标准贯入试验 相对密实度 

分 类 号：TU43[建筑科学—岩土工程] U656.139[建筑科学—土工工程]