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sha - zhan hu ceng zhuang jian tu gong xiao ying de shu zhi fen xi
Author(s): 
Pages: 117-121
Year: Issue:  4
Journal: China Water Transport

Keyword:  抗滑桩土拱效应有限差分砂-粘互层;
Abstract: 采用FLAC3D 3.0软件,详细研究了全砂土、全粘土、砂-粘互层(包括“上砂下粘”和“上粘下砂”两种组合)中桩间土拱效应、应力、位移的变化规律,分析了土拱效应与应力、位移的相互作用,以及桩土荷载分担比与土拱效应的关系.研究结果表明,随距地表深度增大,土拱效应逐渐减弱,应力、位移减小;砂土中土拱效应明显强于粘性土;砂-粘互层中砂土应力、位移增大,土拱效应显著增强,粘性土中应力、位移减小,土拱效应减弱;粘性土中桩荷载分担比与土拱效应呈正相关,砂土中桩荷载分担比与土拱效应的关系取决于位移变化快慢.
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