【摘要】 随着土木工程领域数值计算水平的提高,对大型混凝土结构进行准确力学分析的能力也得到快速发展。这就要求对土要工程材料的力学性能有更精细的认识。混凝土材料的动态力学性能是大型混凝土结构动力安全评价的基础。在总结当前国内外研究成果的基础上,对影响混凝土材料动力性能的主要因素进行了系统地综述,并对混凝土等级、试件尺寸养护环境、试验方法等影响混凝土动态力学性能的主要因素进行了详细分析,明确提出了多轴应力状态、复杂环境条件、复杂应力路径以及循环往复荷载是混凝土动态性能研究的薄弱环节,同时这也是决定大型结构动力灾变的关键环节。需要对这些影响因素分别进行深入、系统的探讨。更多还原

【Abstract】 With the rapid improvement of modern numerical computation technique,the analysis methods of large scale concrete structures have been progressing quickly as well.The demand for more precise and complete understanding of the constitutive materials of civil structures is urgent.Knowledge of the characteristics of concrete subject to dynamic loading is of fundamental significance to the seismic safety evaluation of large scale structures.Based on the literatures available,the major factors affecting the dynamic properties of concrete are systematically discussed.The most important factors such as concrete grade,specimen size,curing and working environment,and test methodology are analyzed in detail.The weakest links in concrete dynamic study are indentified as multi-axial stress state,severe curing/working environment,complex loading history and cyclic reverse loading,ete,which are also of cructial importance to the dynamic failure of the large scale structures in civil engineering.More extensive study is needed in these areas.更多还原