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倾斜与偏心荷载作用下裙板式基础破坏包络面研究 被引量:13

Failure envelope of skirted foundation under inclined loading and eccentric loading
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摘要 联合采用Swipe加载模式与固定位移比加载模式,对裙板式浅基础在倾斜与偏心荷载两种加载条件下的承载性能进行了比较系统的平面应变有限元分析,主要探讨了裙板式基础埋深、地基土不排水强度的非均质性对基础在竖向荷载V与水平荷载H、竖向荷载V与弯矩M加载平面内的破坏包络面的影响,揭示了地基在不同荷载分量组合条件下的失稳破坏机制。结果表明,基础埋深与地基土强度的非均质性对于地基失稳模式有较大影响,但V-H和V-M平面内的破坏包络面形状具有较好的归一化特性,并分别建议了裙板式基础在倾斜和偏心荷载作用下的破坏包络面方程。 联合采用Swipe加载模式与固定位移比加载模式,对裙板式浅基础在倾斜与偏心荷载两种加载条件下的承载性能进行了比较系统的平面应变有限元分析,主要探讨了裙板式基础埋深、地基土不排水强度的非均质性对基础在竖向荷载V与水平荷载H、竖向荷载V与弯矩M加载平面内的破坏包络面的影响,揭示了地基在不同荷载分量组合条件下的失稳破坏机制。结果表明,基础埋深与地基土强度的非均质性对于地基失稳模式有较大影响,但V-H和V-M平面内的破坏包络面形状具有较好的归一化特性,并分别建议了裙板式基础在倾斜和偏心荷载作用下的破坏包络面方程。
出处 《岩土力学》 EI CAS CSCD 北大核心 2010年第S2期43-47,共5页 Rock and Soil Mechanics
基金 国家自然科学基金资助项目(No.50909048 No.50639010) 鲁东大学博士科研启动项目(No.LY20075602 No.LZ20085604)
关键词 裙板式基础 破坏包络面 倾斜荷载 偏心荷载 非均质 skirted foundation failure envelope inclined loading eccentric loading nonhomogeneity
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参考文献7

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二级参考文献19

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