混凝土结构设计原理中的相关问题探讨

Problems Concerning the Design Principle for Concrete Structures

混凝土结构设计原理的相关教材,对于双筋受弯构件与大偏压及大偏拉构件当x<2as′时的截面设计与复核、偏压构件的N-M相关曲线、大偏压构件ea的取值理由、偏压构件截面应变分布以及最小配箍率等问题的阐述彼此之间不一致,有些问题甚至与现行规范亦存在较大出入.为澄清一些设计与计算上的误解,对这些问题进行了分析探讨,并提出了一些见解,以供同行讨论.

In texts concerning the design principle for concrete structures, there is much difference in contents among some important references. Problems arise from the difference include the designing and checking of sections when compressive steels cannot yield, the N-M related curves of the eccentric compression members, the reason for introducing e, to the eccentric-compression members, the distribution of the concrete＇s strain, the minimum ratio of stirrup, etc. Additionally, some references are found to be contradictory to the active code. To clarify the misapprehensions during design and calculation, analyses and standpoints on these above mentioned problems are presented in the paper for discussion among persons of the same profession.