钢筋混凝土受弯构件正截面抗裂相似性研究  

Similitude Ratio of Crack Resistance of Normal Section of Reinforced Concrete Flexural Members

作　　者：赵顺波[1] 管俊峰[1] 程晓天[1] 张学朋[1] 

机构地区：[1]华北水利水电学院土木与交通学院,郑州450011

出　　处：《长江科学院院报》2007年第4期64-66,71,共4页Journal of Changjiang River Scientific Research Institute

基　　金：河南省杰出青年科学基金(04120002300);河南省高校创新人才培养工程培养对象基金(豫教高[2004]294号)

摘　　要：引入结构仿真模型试验相似理论,提出了钢筋混凝土受弯构件正截面抗裂弯矩的相似比计算方法。根据试验研究成果提出了考虑截面高度、混凝土保护层厚度与配筋率等参数的截面抵抗矩塑性系数计算公式。通过大型钢筋混凝土梁及其模型试验梁的正截面抗裂弯矩对比试验,证明所提公式可用于原型和模型构件之间正截面的抗裂换算,为模型试验设计提供了科研依据。Leading into the similitude principle of simulation model test of structure, the method is established for calculating the similitude ratio of flexural moment against cracking of the normal section of reinforced concrete flexural members. On the basis of the experimental results, the formula is proposed for calculating the plastic coefficient of sectional resistance moment, in which the height of normal section, the thickness of concrete covering and the percentage of reinforcement are considered. By comparison tests of the flexural moment against cracking of normal section between the large reinforced concrete beams and their simulation model ones, it is proved that the formula can be used for conversion of flexural moment against cracking between prototype and simulation model, and can be used as reference for the design of simulation model test.

关 键 词：钢筋混凝土 正截面抗裂 截面高度 保护层厚度 钢筋直径 仿真模型设计 相似比 

分 类 号：TU375[建筑科学—结构工程]