摘要
指出了我国《混凝土结构设计规范》中混凝土梁有效翼缘宽度取值的问题。采用能量变分法,推导弹性状态下有效翼缘宽度的计算公式,考虑不同的支座条件下,跨度、梁肋净距、翼缘相对刚度对取值的影响,并验证了公式的准确性。提出了在不同状态下,受拉区和受压区的混凝土梁有效翼缘宽度取值的建议。
The problems in China＇s ＂code for design of concrete structures＂ about RC beams＇ effective flange width are pointed out.The formulae of effective flange width for beams under elastic state are deduced with energy-variation method,in which supporting condition,beam length,distance between beams and relative flange rigidity are considered.And the accuracy of the formulae are verified.The effective flange width of concrete beams under different limited state is recommended.
出处
《四川建筑科学研究》
北大核心
2011年第2期9-12,共4页
Sichuan Building Science
关键词
混凝土梁
有效翼缘
能量变分法
concrete beam
effective flange
energy-variation method
