土工基础

土工基础 ›› 2022, Vol. 36 ›› Issue (3): 471-474.

• 测试技术 • 上一篇    下一篇

基于单桥静力触探的液化判别方法研究

林必明   

  1. （上海勘测设计研究院有限公司，上海 200434）
  • 收稿日期:2021-12-22 修回日期:2022-01-04 出版日期:2022-06-30 发布日期:2022-06-26
  • 作者简介:林必明（1987-），男，工程师，研究方向为岩土工程勘察设计。

Liquefaction Determination Method using CPT Tip Resistance

LIN Biming   

  1. (Shanghai Investigation Design ＆ Research Institute Co. Ltd., Shanghai 200434)
  • Received:2021-12-22 Revised:2022-01-04 Online:2022-06-30 Published:2022-06-26

摘要： 依据上海规范中的单桥静力触探液化判别方法，基于江苏大丰沿海地区大量的工程实测数据，对黏粒含量ρc和比贯入阻力ps值进行线性回归分析，提出适用于该地区的ρc～ps经验公式，同时确定与抗震烈度相对应的比贯入阻力基准值，进而得出适用于江苏大丰沿海地区的单桥静力触探液化判别方法。通过与标准贯入试验法判别结果进行对比和验证，表明了该方法在江苏大丰沿海地区的适用性，为该地区今后的重大工程提供科学有效的液化预判，具有重要的参考意义。

关键词: 液化判别, 单桥静力触探, 标贯法, 适用性

Abstract: This paper presents a new method of liquefaction determination method based on the tip resistance of Cone Penetration Test (CPT) approach in the Shanghai Municipal Code. The linear regression analyses were performed between the clayey content, ρcand the tip resistance, ps, from a large amount of CPT test data from the coastal area of Dafeng area, Jiangsu Providence. So that the tip resistance reference value corresponding to the seismic intensity is established, and then the method for determining the liquefaction of CPT in the coastal Dafeng area is obtained. By comparing and verifying the crimination results with the SPT method, the applicability of this method in the coastal Dafeng area is explained, and it provides scientific and effective liquefaction prediction for future major projects in this area, which has very important reference significance.

Key words: liquefaction determination, cone penetration test with tip resistance measurement, standard penetration tests, applicability range

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