论文部分内容阅读
为解决地基承载力安全问题,基于潜在滑移线理论,通过编制通用的潜在滑移线求解和后处理程序,得到地基的潜在滑移线求解方法,并提出地基承载力安全分析方法。由地基弹塑性有限元分析,得到不同荷载作用下地基的连续应力场。用数值积分方法确定地基的潜在滑移线、最危险潜在滑移面和地基稳定性安全系数。工程实例分析结果表明,该方法具有严密的理论依据,与《建筑地基基础设计规范》方法和太沙基公式法等计算方法有较好的可比性,可综合考虑基础宽度、埋深、土体自重、土体分层等因素,明确地基土体的破坏发展趋势和破坏机理。
In order to solve the safety problem of foundation bearing capacity, a potential slip line solution method is proposed based on the potential slip line theory and the common potential slip line solution and post-processing program. A safety analysis method of foundation bearing capacity is also proposed. From the foundation elastic-plastic finite element analysis, the continuous stress field of the foundation under different loads is obtained. The numerical integral method is used to determine the potential slip line, the most dangerous potential slip surface and the safety factor of foundation stability. The result of engineering example shows that this method has a rigorous theoretical basis which is in good comparability with the calculation methods such as the “Code for Designing Foundation of Building Foundation” and the method of Formosa formula, and can comprehensively consider the basic width, depth, soil Weight, soil layering and other factors, a clear foundation of the destruction of the development trend and destruction mechanism.