【摘要】 工程中为了克服安全系数评定基坑稳定性中的缺陷,研究者已开始将可靠性理论应用到基坑分析中,而此理论要求必须正确建立基坑失效模式和功能函数。在前人研究的基础上,通过对深基坑稳定性影响因素分析研究,从失效机理上对深基坑支护失效模式进行探究性总结,提出7种失效模式,并认为此7种模式是相互耦合的,具有一定的相关度,从而为基坑支护体系可靠度的计算奠定基础。更多还原

【Abstract】 In order to overcome the deficiencies in the assessment of foundation stability with safety factors,many researchers have begun to apply the reliability theory to foundation analysis,but this theory requires that the correct failure mode and performance function must be established.Here,on the basis of previous researches and through analyzing the effected factors for deep excavation stability,the failure modes of supporting for deep foundation pit are concluded from the failure mechanism,at last,seven kinds of instability modes are put forward,which are considered to be coupled each other and have some correlation,so as to lay the foundation for the reliability calculation of supporting system.更多还原