软土地区基坑抗隆起稳定验算公式的改进  

Improvement of the Checking Calculation Formula of HeaveResistant Stability of Excavations in Soft Soil Areas

作　　者：刘一凡 叶俊杰 韩建刚[1] Liu Yifan;Ye Junjie;Han Jiangang(College of Civil Engineering and Architecture,Hainan University,Haikou 570228,China)

机构地区：[1]海南大学土木建筑工程学院,海南海口570228

出　　处：《海南大学学报（自然科学版）》2022年第4期400-406,共7页Natural Science Journal of Hainan University

基　　金：国家自然科学基金(51868017)。

摘　　要：通过对地基承载力公式进行修正并推导了破坏面上剪力的计算式,对规范公式进行了改进,使其更符合工程实际,并对改进公式进行了工程实例检验验证及数值模拟验证.模拟结果表明:改进公式更符合工程实际,所计算出的安全系数相比规范方法有所提高,并且可以反映现实中基坑抗隆起稳定性随基坑宽度减小而增加的规律,可将改进公式用于工程验算,具有工程实践推广意义.In the report,the shear force formula on failure surface was deduced by modifying the foundation bearing capacity formula.The engineering practice formula was improved,and which can comply with practical engineering.The proposed modified formula was validated by engineering projects and numerical simulation.The results indicated that the improved formula is more fit for practical engineering,and the obtained safety factor is higher than that of the engineering practice formula,and which can reflect the law that the heave-resistant stability increases with the decrease of foundation width.The modified formula can serve for engineering checking calculation,which has the significance to promote engineering practice.

关 键 词：基坑 抗隆起稳定 软土 地基承载力 数值模拟 

分 类 号：TU470[建筑科学—结构工程]