Lightweight concrete filled steel tubular beam under bending-shear
Lightweight concrete filled steel tubular beam under bending-shear
复制标题
弯剪作用下的轻质钢管混凝土梁
DOI：
10.1016/j.istruc.2020.12.072
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发表时间：
2021
期刊：
影响因子：
4.1
通讯作者：
Mizukoshi Mutsumi
中科院分区：
文献类型：
--
作者：
Uenaka Kojiro;Mizukoshi Mutsumi
钢管轻集料混凝土构件是由空心钢管和轻集料混凝土组成的新型钢管混凝土构件。本文研究了新型钢管轻集料混凝土（L-CFT）构件的弯剪性能。试验选取了大径厚比和剪跨比两个试验参数。通过非对称四点加载，讨论了径厚比对L-CFT深梁弯剪性能的影响。此外，本文还提出了两种类型的L-CFT深梁弯剪承载力的预测方法。文中还讨论了平面应力条件下钢管的弹塑性双向应力行为。所得的试验强度与基于钢筋混凝土深梁理论的建议强度一致。
Lightweight concrete filled steel tubular (L-CFT) member is the new type of concrete filled steel tubular consisting of hollow steel tube and lightweight concrete. This study aims to investigate bending-shear behavior of the new type of lightweight concrete filled steel tubular, L-CFT, member, which is lighter than normal concrete filled steel tubular, N-CFT, member. The two test parameters, large diameter-to-thickness and shear span ratios are selected. The influence of diameter-to-thickness ratio on L-CFT deep beam under bending-shear through asymmetric four-point loading is discussed. Moreover, methods to predict two types of bending-shear capacities of L-CFT deep beam are provided. The elasto-plastic biaxial stress behavior of the steel tube under plane stress condition is also mentioned. The obtained experimental strengths agreed with proposed strength based upon RC deep beam theory.