Estimating the Severity of Liquefaction Ejecta Using the Cone Penetration Test
Estimating the Severity of Liquefaction Ejecta Using the Cone Penetration Test
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使用锥入度测试估算液化喷射物的严重程度
DOI：
10.1061/(asce)gt.1943-5606.0002744
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发表时间：
2022
影响因子：
3.9
通讯作者：
J. Bray
中科院分区：
文献类型：
--
作者：
Danny Hutabarat;J. Bray
开发了一种基于锥入度测试（CPT）的程序来估计液化引起的喷射物的严重程度。液化喷出物需求参数 () 反映了由于升高的过量水头而可以产生自流的向上渗流压力的大小，而地壳层阻力参数 () 反映了不可液化地壳层的强度和厚度。该程序使用 176 个有据可查的现场案例进行了检验，这些案例包括基督城的厚的、干净的沙子和分层粉质土壤场地。随着厚的、干净的沙子场地的喷射物严重程度的增加，该程序往往会系统性地增加，并且在不产生喷射物的分层土壤地点估计低值，这解决了分层土壤地点的其他液化指数明显高估的问题。通过区分不同的性能，提高了程序的可靠性。具有或不具有能力的地壳层覆盖着具有高价值的厚可液化层的地点。所提出的液化喷射物严重性图表将具有严重或极端喷射物的情况（具有高值和低值）与具有轻微或无喷射物的情况（具有低值和高值）区分开来。
A cone penetration test (CPT)-based procedure to estimate liquefaction-induced ejecta severity is developed. The liquefaction ejecta demand parameter () captures the amount of upward seepage pressure that can produce artesian flow due to elevated excess hydraulic head, and the crust layer resistance parameter () captures the strength and thickness of the nonliquefiable crust layer. The procedure is examined using 176 well-documented field case histories consisting of thick, clean sand, and stratified silty soil sites in Christchurch.tends to increase systematically as ejecta severity increases at the thick, clean sand sites, and lowvalues are estimated at stratified soil sites that did not produce ejecta, which resolves the apparent overestimation by other liquefaction indices at stratified soil sites.improves the reliability of the procedure by differentiating the performance of sites with and without a competent crust layer overlying a thick liquefiable layer with a highvalue. The proposedliquefaction ejecta severity chart separates cases with severe or extreme ejecta, which have highand lowvalues, from cases with minor or no ejecta, which have lowand highvalues.
开发特定区域土壤行为类型指数相关性，用于评估新西兰基督城的液化危险
影响因子：
4
作者：
Maurer, B.W.;Green, R.A.;van Ballegooy, S.;Wotherspoon, L.
通讯作者：
Wotherspoon, L.