论文部分内容阅读
前言后张连续梁的预应力弯矩总效应分析,关键是要算出各支点的次力矩。因为次力矩在两支承间是按直线变化的,在自由端(端支承)则等于零。因此,梁跨上的预应力总弯矩可按钢索对中心轴的偏心距求得的初预矩,与之以支承处次力矩按内插所得之值,二者叠加求得。目前国内常用的次力矩计算方法有:三弯矩方程、力矩分配法和连续梁
Foreword Post-tensioned beam prestressed moment total effect analysis, the key is to calculate the fulcrum of the secondary moment. Because the secondary moment varies linearly between the two supports, it equals zero at the free end (end support). Therefore, the prestressed total moment of beam span can be obtained by adding the initial pre-moment obtained from the eccentricity of the cable to the central axis and the value obtained by interpolating the secondary moment of the bearing. At present, the commonly used methods for calculating the secondary moment are: three-moment equation, moment distribution method and continuous beam