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首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Hysteretic behavior and strength capacity of shallowly embedded steel column bases with SFRCC slab
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Hysteretic behavior and strength capacity of shallowly embedded steel column bases with SFRCC slab

机译：含SFRCC板的浅埋式钢柱基础的滞回性能和承载力。

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摘要

A series of shallowly embedded steel column bases consisting of an exposed column base and a floor slab is tested under horizontal cyclic loading to very large deformation. The effects of floor slabs on strength and ductility are examined using concrete and Steel fiber-reinforced cementitous composites (SFRCC) for the floor slab. The elastic stiffness, maximum strength, and dissipated energy of the column bases when they include SFRCC increase by 40, 70, and 70% over those of corresponding column bases with concrete floor slab. Better bonding behavior is notable for SFRCC, and the maximum strength and dissipated energy further increase by 15-30% and 70-90%, respectively, owing to the careful arrangement of reinforcing bars. Numerical models are developed to enhance the understanding the behavior of shallowly embedded column bases. Procedures for estimating the elastic stiffness and maximum strength of shallowly embedded column bases with conventional concrete are calibrated for their applicability to those with SFRCC slab.
机译：在水平循环载荷下对一系列浅埋钢柱基础进行了测试，这些柱基础由裸露的柱基础和楼板组成，变形程度非常大。使用混凝土和用于楼板的钢纤维增强水泥复合材料（SFRCC）来检查楼板对强度和延展性的影响。当包含SFRCC时，柱基础的弹性刚度，最大强度和耗散能量比相应的混凝土楼板基础增加40％，70％和70％。 SFRCC具有更好的粘结性能，并且由于精心布置了钢筋，最大强度和耗散能量分别进一步增加了15-30％和70-90％。开发了数值模型以增强对浅埋圆柱基础行为的理解。对于使用常规混凝土的浅埋圆柱基础的弹性刚度和最大强度的估算程序，应进行校准，以使其适用于SFRCC平板混凝土。

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