沉积作用及应力历史对自重应力和沉降的影响
发布时间:2018-10-17 12:28
【摘要】:土体的沉积作用和应力历史会影响土体自重应力的确定,也会影响地基最终沉降量的确定。鉴于e-lnp比e-lgp坐标图能更方便、精确地描述线性问题,根据e-lnp坐标图推导沉积作用对成层土、正常固结土、超固结土的自重应力与沉降影响的计算式。用该计算式对昆明滇池国际会展中心部分深厚软土地基的自重应力和最终沉降量进行计算,并用计算结果和不考虑沉积作用及应力历史影响的计算结果进行对比分析,结果表明,沉积作用对深厚软粘土自重应力和最终沉降量计算值的影响非常显著,并且土体厚度越厚、上覆荷载越大,其影响越明显。
[Abstract]:The sedimentation and stress history of the soil will influence the determination of the gravity stress and the final settlement of the foundation. In view of the fact that e-lnp is more convenient than e-lgp coordinate diagram to describe the linear problem accurately, the formula for calculating the influence of sedimentation on the self-gravity stress and settlement of stratified soil, normal consolidated soil and overconsolidated soil is derived according to the e-lnp coordinate diagram. This formula is used to calculate the deadweight stress and final settlement of deep soft soil foundation in Kunming Dianchi International Conference and Exhibition Center. The calculated results are compared with those calculated without considering the influence of sedimentation and stress history. The results show that the sedimentation has a significant effect on the calculation of deadweight stress and final settlement of the deep soft clay, and the thicker the soil mass is, the greater the overburden is, and the more obvious the influence is.
【作者单位】: 昆明理工大学建筑工程学院;十四冶建设云南勘察设计有限公司;
【基金】:教育部博士点基金(20135314110005) 国家自然科学基金联合基金(U1502232)~~
【分类号】:TU43
本文编号:2276658
[Abstract]:The sedimentation and stress history of the soil will influence the determination of the gravity stress and the final settlement of the foundation. In view of the fact that e-lnp is more convenient than e-lgp coordinate diagram to describe the linear problem accurately, the formula for calculating the influence of sedimentation on the self-gravity stress and settlement of stratified soil, normal consolidated soil and overconsolidated soil is derived according to the e-lnp coordinate diagram. This formula is used to calculate the deadweight stress and final settlement of deep soft soil foundation in Kunming Dianchi International Conference and Exhibition Center. The calculated results are compared with those calculated without considering the influence of sedimentation and stress history. The results show that the sedimentation has a significant effect on the calculation of deadweight stress and final settlement of the deep soft clay, and the thicker the soil mass is, the greater the overburden is, and the more obvious the influence is.
【作者单位】: 昆明理工大学建筑工程学院;十四冶建设云南勘察设计有限公司;
【基金】:教育部博士点基金(20135314110005) 国家自然科学基金联合基金(U1502232)~~
【分类号】:TU43
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本文编号:2276658
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