水平液化场地土表位移简化理论解答 A simplified theoretical solution of displacement in horizonta

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水平液化场地土表位移简化理论解答

A simplified theoretical solution of displacement in horizontal liquefiable soil strata

摘要:水平液化场地地表往返位移的求解是基础和地下工程抗震设计的迫切需求.利用双层模型模拟实际水平场地,提出了可考虑液化层存在下的土表位移简化计算方法并给出频域理论解答,同时采用逐循环累计方法给出水平场地任意荷载下土表位移时域解答.采用适于水平场地孔压增量模型,并逐循环修正土层模量,模拟液化引起的土层的非线性过程.振动台试验结果和提出棋型的计算结果吻合,验证了所提方法能够反映土体液化对土表位移影响的基本过程.提出的方法和解答物理意义明确,可代表土体液化对土表位移影响的基本形态,并可用于频域及时域的无量纲分析.
作者 陈龙伟    袁晓铭    孙锐    CHEN Long-wei    YUAN Xiao-ming    SUN Rui
作者单位 中国地震局工程力学研究所,哈尔滨,150080
期 刊: 岩土力学  
Journal: ROCK AND SOIL MECHANICS
年,卷(期) 2010, 31(12)
分类号 TU435
关键词: 液化    位移    水平场地    理论解答   
机标分类号 TU4 TU3
机标关键词 土体液化    场地土    位移    频域理论    解答    简化计算方法    表位    移影响    工程抗震设计    无量纲分析    非线性过程    增量模型    液化场地    循环    物理意义    土层    试验结果    实际水平    时域    任意荷载
基金项目 国家自然科学基金重大研究计划,中国地震局工程力学研究所基本科研业务费专项,国家重点基础研究发展计划
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