沉積作用及應(yīng)力歷史對自重應(yīng)力和沉降的影響
發(fā)布時間:2018-10-17 12:28
【摘要】:土體的沉積作用和應(yīng)力歷史會影響土體自重應(yīng)力的確定,也會影響地基最終沉降量的確定。鑒于e-lnp比e-lgp坐標圖能更方便、精確地描述線性問題,根據(jù)e-lnp坐標圖推導(dǎo)沉積作用對成層土、正常固結(jié)土、超固結(jié)土的自重應(yīng)力與沉降影響的計算式。用該計算式對昆明滇池國際會展中心部分深厚軟土地基的自重應(yīng)力和最終沉降量進行計算,并用計算結(jié)果和不考慮沉積作用及應(yīng)力歷史影響的計算結(jié)果進行對比分析,結(jié)果表明,沉積作用對深厚軟粘土自重應(yīng)力和最終沉降量計算值的影響非常顯著,并且土體厚度越厚、上覆荷載越大,其影響越明顯。
[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.
【作者單位】: 昆明理工大學(xué)建筑工程學(xué)院;十四冶建設(shè)云南勘察設(shè)計有限公司;
【基金】:教育部博士點基金(20135314110005) 國家自然科學(xué)基金聯(lián)合基金(U1502232)~~
【分類號】:TU43
本文編號:2276657
[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.
【作者單位】: 昆明理工大學(xué)建筑工程學(xué)院;十四冶建設(shè)云南勘察設(shè)計有限公司;
【基金】:教育部博士點基金(20135314110005) 國家自然科學(xué)基金聯(lián)合基金(U1502232)~~
【分類號】:TU43
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