摘要
采用应变率相关的砼非线性损伤模型模拟拱坝横缝,研究了砼非线性本构情况下整体拱坝与考虑分缝拱坝的应力响应和损伤开裂的特点与差别。对实际拱坝的地震响应分析表明,基于非线性砼模型的整体拱坝动力响应模型可以基本反映拱坝的实际应力分布情况。
The contraction joints have to be modeled if the open-close effects of joints on the dynamic response of high arch dam are studied. Based on the strain rate-dependant damage constitutive model, the dynamic response and the damage characteristics are studied for the arch dam model with and without considering the opening-closing effects of joints. The analysis show that arch dam model without modeling contraction joints can give reasonable dynamic response results based on the nonlinear concrete model.
出处
《应用力学学报》
CAS
CSCD
北大核心
2010年第1期125-129,共5页
Chinese Journal of Applied Mechanics
基金
国家重点基础研究(973)发展计划(2007CB714107)
国家自然科学基金(90510018)
教育部新世纪优秀人才计划(NCET-06-0270)
关键词
拱坝
非线性
砼
动力分析
接触
arch dam, nonlinearity, concrete, dynamic analysis, contact.
