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简述砂土地震液化的防护措施。

问答题
2021-12-31 21:44
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正确答案

良好的场地选择(选择表层非液化盖层厚度大,地下水埋藏深)。
人工改良地基:增加盖重,换土,改善饱水砂层的密实程度(爆炸振密法,强夯与碾压,水冲振捣回填碎石桩法),消散剩余孔隙水压,围封法。
基础形式的选择:桩基(较深的支撑桩基或者管柱基础,不宜用摩擦桩)或者筏片基础。


试题解析

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饱和砂土地震液化的常用处理措施主要有改变基础型式、地基加固(加密)处理、围封和盖重等工程措施,下列选项中对上述四种工程措施的叙述不正确的是()。
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地震砂土液化的机理为何。
简述砂土地震液化的形成条件。
简述砂土地震液化的防护措施。
简述砂土地震液化的判别方法。
地震产生砂土液化的危害有哪些?
地震中饱和松散砂土的液化表现为().
关于地震时场地中饱和砂土的液化现象,下述()是正确的。()
Mainly east 3 or 4 partly cloudy to overcast occasional rain()slowly south moderate or good.
()any case or suspected case of quarantinable disease,or any case of eruptive disease or any death be discovered,the local quarantine officer must be notified immediately.
Should any case or suspected case of quarantinable disease,or any case of eruptive disease or any death be discovered,the local Quarantine Officer must be()immediately.
Masters are()solely responsible for all damages or accidents of whatever kind resulting from the navigating or handling of their vessels by day or by night.
简述砂土液化机制?如何用标贯试验判别砂土液化?
系统中雷达状态包括Unknown、Operational(or ON)、Failed(or OFF)、Detached。
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Shutdown price(or point,or rule) 停业价格(或停业点、停业原则)
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简述布尔算符(OR)的作用。
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