Comparison of main models for size effect on shear strength of reinforced and prestressed concrete beams
Comparison of main models for size effect on shear strength of reinforced and prestressed concrete beams
复制标题
钢筋与预应力混凝土梁抗剪强度尺寸效应主要模型比较
DOI：
10.1002/suco.201500126
复制
发表时间：
2016
影响因子：
3.2
通讯作者：
Z. Bažant
中科院分区：
文献类型：
--
作者：
Qiang Yu;J. Le;M. Hubler;R. Wendner;G. Cusatis;Z. Bažant
本文对现有混凝土梁抗剪强度规范规定进行了严格的比较。该比较基于从可用的抗剪强度多元数据库中不可避免的统计偏差的计算机过滤、对抗剪强度的预测尺寸效应及其基本假设的检查以及最近的剪切破坏高保真数值模拟的结果。除了检查现有模型之外，当前的比较还提供了测试混凝土梁剪切破坏模型的科学合理性的几个关键考虑因素，这对于未来设计规范条款的修订是必要的。
This paper presents a critical comparison of the existing code provisions for the shear strength of concrete beams. The comparison is based on the computerized filtering‐out of the inevitable statistical bias from the available multivariate database on shear strength, on an examination of the predicted size effects on shear strength and their underlying hypotheses and on the results of recent high‐fidelity numerical simulations of shear failure. In addition to examining the existing models, the present comparison also provides several key considerations for testing the scientific soundness of any model of shear failure in concrete beams, which is necessary for future revisions to the design code provisions.