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将岸坡和河床及土工织物等作为一个整体结构,对这种混合结构提出了非线性有限元结构分析方法及计算程序。沙土材料用四边形等参元离散,土工织物则离散成只能承受拉力的连杆单元,在不同介质的接触面上设置一维接触面单元。对于沙土材料和接触面,文中各给出了两种可供选择的非线性本构模型。通过工程实例计算结果,说明这种分析方法是可行的。
Taking the bank slope, the river bed and the geotextile as a whole structure, a nonlinear finite element analysis method and a calculation program for the hybrid structure are proposed. Sand material is divided into four isoparametric elements, and the geotextile is separated into connecting rod units that can only bear tension. One-dimensional contact surface elements are arranged on the contact surfaces of different media. For sand materials and contact surfaces, two kinds of nonlinear constitutive models are given. Through the engineering example calculation result, this kind of analysis method is feasible.