LIQUEFACTION EFFECTS AND ASSOCIATED DAMAGES OBSERVED AT THE WELLINGTON CENTREPORT FROM THE 2016 KAIKOURA EARTHQUAKE
LIQUEFACTION EFFECTS AND ASSOCIATED DAMAGES OBSERVED AT THE WELLINGTON CENTREPORT FROM THE 2016 KAIKOURA EARTHQUAKE
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DOI：
10.5459/bnzsee.50.2.152-173
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发表时间：
2017-06-01
影响因子：
1.7
通讯作者：
Wotherspoon, Liam
中科院分区：
文献类型：
--
作者：
Cubrinovski, Misko;Bray, Jonathan D.;Wotherspoon, Liam
由于2016年11月14日M(W)7.8 Kaikoura地震，惠灵顿中心港的末端倾倒的砾石填充物和水力放置的疏浚砂质填充物发生了广泛的液化。这种液化导致大量的全球(大量)沉降和填充物向海的横向移动(扩散)，这对码头结构和在浅基础和深基础上建造的建筑物产生了不利影响。本文介绍了威灵顿中心港的QuakeCoRE-Geer震后勘察工作中的主要观测结果。在中央港建造填海造地所使用的不同材料和方法影响了观测到的液化模式及其影响。由于文献中这些案例的数量有限，港口的碎石液化区域尤其重要。液化引起的地面变形导致码头发生横向位移，损坏了码头的桩和卸货设备。地面横向伸展和差异沉降破坏了建筑物，而均匀地面沉降区的建筑物在没有横向伸展的情况下表现得更好。
Widespread liquefaction occurred in the end-dumped gravelly fills and hydraulically-placed dredged sandy fill at the CentrePort of Wellington as a result of the 14 November 2016 M(w)7.8 Kaikoura earthquake. This liquefaction resulted in substantial global (mass) settlement and lateral movement (spreading) of the fills towards the sea, which adversely affected wharf structures and buildings constructed on shallow and deep foundations. This paper presents key observations from the QuakeCoRE-GEER post-earthquake reconnaissance efforts at the CentrePort Wellington. The different materials and methods used to construct the reclaimed land at CentrePort influenced the patterns of observed liquefaction and its effects. Areas of gravel liquefaction at the port are especially important due to the limited number of these case histories in the literature. Liquefaction-induced ground deformations caused the wharves to displace laterally and damage their piles and offloading equipment. Lateral ground extension and differential settlement damaged buildings, whereas buildings in areas of uniform ground settlement without lateral extension performed significantly better.