基于CPT评价振冲密实法提高砂土抗液化的效果

英文篇名：Evaluation on Improvement Effect of Sand Soil Liquefaction Resistance Using Vibration Compaction Method Based on CPT
中文刊名：路基工程
英文刊名：Subgrade Engineering
作者：王盼 ; 焦绪学 ; 曾子明
英文作者：WANG Pan1 ; JIAO Xu-xue2 ; ZENG Zi-ming1(1.Engineering Technology Research Co. ; Ltd. ; of CCCC Fourth Harbor Engineering Co. ; Ltd. ; Guangzhou 510230 ; China ; 2.The First Engineering Co. ; Ltd. ; of CCCC Fourth Harbor Engineering Co. ; Ltd ; Guangzhou 510500 ; China)
中文关键词：砂土液化 ; 静力触探 ; 地震
英文关键词：sand soil liquefaction ; static penetration ; earthquake
出版日期：2010-08-20
机构：中交四航工程研究院有限公司;中交四航局第一工程有限公司;
年：2010
期：04
出版单位：路基工程

摘要

砂土液化会引起地面喷水冒砂和不均匀沉降,危及建筑物的正常使用。对于有抗震要求的松散砂基,评价其抗液化性能是砂基设计的主要目的。文中结合埃及塞得东港集装箱码头二期水工工程砂土地基振冲处理前后的CPT结果,利用国内规范和国外液化判别方法预测其抗液化性能,验证了振冲挤密法可显著提高CPT的锥尖阻力,用振冲挤密法来加固松散砂基,提高其抗液化性能具有较好的效果。
Sand soil liquefaction will cause surface sand boiling and uneven settlement,endangering normal service of buildings.For loose sand foundation with earthquake resistance requirement,the main purpose of sand foundation design is to evaluate its liquefaction resistance.Combined with CPT result before and after vibroflotation treatment of sand soil foundation in the 2nd hydraulic engineering of Egypt East Port Said container terminal,this paper predicts its liquefaction performance using domestic criterion and external liquefaction recognition method and verifies that vibroflotation method can significantly improve CPT tip resistance.Vibroflotation method has preferable effect in reinforcement of loose sand foundation and improvement of its liquefaction resistance.

引文

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