- 摘 要
-
(鄭州大學綜合設計研究院有限公司， 鄭州 450002)
［摘要］為研究地下水位變化對地基承載力的影響，按裙房作用于基底的壓力不小于或者小于基底水浮力兩種情況，推導和分析了在水浮力作用下裙房對主樓地基承載力的影響。裙房作用于基底的壓力小于基底水浮力時，考慮黏聚力對地基承載力的貢獻以及水浮力和抗浮錨桿共同作用對土的浮重度的影響兩個因素，給出了修正后的地基承載力特征值計算方法。計算結果顯示，地下水位變化對地基承載力有影響，且該影響隨土的類型不同呈現比較大的差異。建議進行地基承載力計算時考慮地下水位的影響，最終結果需綜合考慮。
［關鍵詞］水浮力；地基承載力；主樓裙樓一體
中圖分類號：TU470+.3 文獻標識碼：A文章編號：1002-848X(2021)12-0129-05
Checking calculation analysis on foundation bearing capacity of integral main-podium building under water buoyancy
YANG Yanchun
(Zhengzhou University Multi-functional Design and Research Academy Co., Ltd., Zhengzhou 450002， China)
Abstract: In order to study the influence of groundwater level change on the foundation bearing capacity, according to the two situations that pressure on foundation by podium is not less than or less than the water buoyancy of foundation, the influence of podium on the foundation bearing capacity of the main building under water buoyancy was deduced and analyzed. When the pressure of podium on foundation is less than the water buoyancy of foundation, considering the contribution of cohesion to foundation bearing capacity and the influence of the combined action of water buoyancy and anti-floating anchor on the buoyant unit weight of the soil, the calculation method of modified characteristic value of foundation bearing capacity was given. The calculation results show that the change of groundwater level has an influence on the foundation bearing capacity, and the influence varies greatly with the classification of soil. It is suggested that the influence of groundwater level should be considered when calculating foundation bearing capacity, and the final result needs to be considered comprehensively.
Keywords:water buoyancy； foundation bearing capacity； integral main-podium building
作者簡介：楊艷春，碩士，高級工程師，一級注冊結構工程師，Email:yyc5795y@163.com。
