Effectiveness of inhibiting liquefaction triggering by shallow ground improvement methods: Initial field shaking trials with T-Rex at one site in Christchurch, New Zealand
Effectiveness of inhibiting liquefaction triggering by shallow ground improvement methods: Initial field shaking trials with T-Rex at one site in Christchurch, New Zealand
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通过浅层地面改良方法抑制液化触发的有效性：在新西兰基督城的一个地点使用 T-Rex 进行了初步现场震动试验
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
S. V. Ballegooy
中科院分区：
文献类型：
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作者：
K. Stokoe;J. Roberts;Sungmoon Hwang;B. Cox;F. Menq;S. V. Ballegooy
2010年至2011年，新西兰的克赖斯特彻奇和坎特伯雷地区遭受了一系列强烈地震的破坏。克赖斯特彻奇地区经历了大面积的液化，造成了广泛的破坏。重建工作面临的一个关键问题是，这片土地在未来的地震中仍有液化的危险。因此，必须开发有效的工程解决方案来增加房屋和低层结构的弹性。为此，多种浅层改善方法的一系列全面的全尺寸现场试验正在进行中。介绍了在一个地点进行的初步现场试验，涉及五个不同地面改进的测试面板。每个测试板和两个未改良的自然土壤测试板在摇动前都进行了仪器测量和表征。一种名为T-Rex的大型移动振动筛已被用于对每个测试面板执行不断增加的动态水平载荷序列。结果正在分析中，但已经可以区分出好的和差的表现。
Christchurch and the Canterbury region in New Zealand were devastated in 2010-2011 by a series of powerful earthquakes. The Christchurch area experienced widespread liquefaction that caused extensive damage. One critical problem facing the rebuilding effort is that the land remains at risk of liquefaction in future earthquakes. Therefore, effective engineer- ing solutions must be developed to increase the resilience of homes and low-rise structures. To this end, a comprehensive series of full-scale field trials of multiple shallow ground improvement methods is underway. Initial field trials at one site involving five test panels of different ground improvements are presented. Each test panel and two unimproved natural soil test panels have been instrumented and characterized before shaking. A large mobile shaker, called T-Rex, has been used to perform an increasing sequence of dynamic horizontal loads to each test panel. The results are being analyzed but good and poor performance can already be differentiated.