推力桩计算的综合刚度双参数法半数值解

Semi-numerical solutions of laterally loaded piles by the biparameter method with composite stiffness

针对现有综合刚度双参数法计算推力桩的幂级数解析解公式较为冗长、编程不便和查表手算较为繁琐的不足,提出结合解析解可取成果反算桩-土综合刚度和地基系数的双参数,再采用分析原理简单、便于编程的有限差分数值计算手段进行桩身位移、侧土抗力和内力计算的新方法.实例计算比较表明,该法方便可靠,对于推广综合刚度双参数法在推力桩计算工程实践中的应用是有益的.

Points out some disadvantages of the existing biparameter method with composite stiffness in calculating displacements, soil resistances and internal forces of laterally loaded piles. For examples, the analytical expressions of exponential progression are lengthy, not easily to be programmed and calculating by tables is taxing. Therefore, a new method is presented which the composite stiffness of the pile and soil and its bipaprameter of foundation coefficient can be back calculated by the fruit of analytical method. The displacements, soil resistances and internal forces of laterally loaded piles can be calculated by means of the finite difference method that the principle is simple and easily to be programmed. The examples show the method to be convenient and reliable. So it will be helpful to promote the bipaprameter method with composite stiffness to be used in practical calculation projects of laterally loaded piles.