Use of PANDA Dynamic Cone Penetrometer for Site Investigation following Blast Liquefaction Testing
Use of PANDA Dynamic Cone Penetrometer for Site Investigation following Blast Liquefaction Testing
复制标题
使用 PANDA 动态锥入度计进行爆破液化测试后的现场调查
DOI：
10.1061/9780784483695.015
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Hanley, James P.
中科院分区：
文献类型：
--
作者：
Hubler, Jonathan F.;Hanley, James P.
熊猫可变能量动态圆锥贯入仪(DCP)是一种移动式、仪表式DCP，只需一名用户即可进行快速现场勘察。在这项研究中，熊猫被用来测量圆锥体尖端阻力，并在新西兰克赖斯特彻奇的一个爆炸液化试验场建立场地概况。爆炸液化测试在现场的两个区域进行。第一次爆破试验是在注入树脂后改良的土壤中进行的，而第二次试验是在未经处理的土壤中进行的。在液化前和液化后用熊猫DCP进行测量，以评估液化引起的土壤阻力的变化。开发了深至4.5米的锥尖阻力剖面，大约需要30分钟才能完成。试验结果表明，由于液化，未处理场地的锥尖阻力发生了变化，在那里观察到了阻力的下降。此外，熊猫DCP的结果与两个试验区液化前进行的锥体渗透测试进行了比较，显示出很好的一致性。熊猫DCP被发现是在爆炸液化测试后进行现场调查的有用工具，因为在难以进入的地区部署后30分钟内就可以完成测试。
The PANDA variable energy dynamic cone penetrometer (DCP) is a mobile, instrumented DCP that enables rapid site investigation by one user. The PANDA was utilized in this study to measure cone tip resistance and develop site profiles at a blast liquefaction test site in Christchurch, New Zealand. The blast liquefaction testing occurred at two areas within the site. The first blast test was performed in soil that had been improved by resin-injection, whereas the second test was performed in untreated soil. Measurements were performed with the PANDA DCP prior to liquefaction and following liquefaction to evaluate changes in soil resistance as a result of liquefaction. Cone tip resistance profiles were developed for depths to 4.5 m and took approximately 30 min to complete. Results of the testing showed changes in cone tip resistance as a result of liquefaction for the untreated site where a decrease in resistance was observed. In addition, the PANDA DCP results were compared with cone penetration tests that were performed prior to liquefaction at both test areas and showed good agreement. The PANDA DCP was found to be a useful tool for site investigation following blast liquefaction tests as tests could be completed within 30 min of deployment in difficult to access areas.
2010-2011 年基督城（新西兰）地震的岩土工程和结构方面
影响因子：
7.4
作者：
M. Cubrinovski;S. Pampanin;B. Bradley
通讯作者：
B. Bradley