Shear and Torsion Response of Reinforced Concrete Structures

这项长期研究计划的目标是提高对开裂钢筋混凝土传递剪切应力的机制的理解，并利用这种理解开发分析工具，结构工程师可以用来设计新的结构和评估现有混凝土结构的安全性。剪切破坏可以导致混凝土结构在没有警告的情况下倒塌，因此，对公共安全至关重要。现在已经知道，用于现有混凝土基础设施的相当大一部分的较旧的北美剪切和扭转设计程序可能导致建筑物、桥梁、筒仓和核电厂可能没有足够的安全裕度来防止这种故障。这种结构在地震中特别容易倒塌。

The objectives of this long-term research program are to improve understanding of the mechanisms by which cracked reinforced concrete transmits shear stresses and use this understanding to develop analytical tools which structural engineers can use to design new structures and evaluate the safety of existing concrete structures. Shear failures can cause concrete structures to collapse without warning and, hence, are of critical concern for public safety. It is now known that older North American shear and torsion design procedures used for a significant portion of existing concrete infrastructure can result in buildings, bridges, silos and nuclear power plants which may have inadequate margins of safety against such failures. Such structures are particularly prone to collapse during earthquakes.