Theoretical and experimental investigation on immediate stiffness of UHPC beams

被引：0
|
作者：
Xu M.-X. [1 ]
Liang X.-W. [1 ]
Yu J. [1 ]
Li L. [2 ]
机构：
[1] College of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, Shaanxi
[2] Shaanxi Jianyan Structural Engineering Co., Ltd., Xi'an, 710082, Shaanxi
来源：
Gongcheng Lixue/Engineering Mechanics | 2019年 / 36卷 / 01期
关键词：
Effective inertia moment method; Experimental investigation; Immediate stiffness; Stiffness analysis method; Ultra high performance concrete;
D O I：
10.6052/j.issn.1000-4750.2017.11.0815
中图分类号：
学科分类号：
摘要：
Ultra high performance concrete (UHPC) is a remarkable material exhibiting higher strength, toughness, durability and anti-impact property when compared with conventional concrete. In the study of deformation and stiffness of UHPC beams, the immediate stiffness calculation theory has not yet formed a unified method. In this study, the UHPC immediate stiffness calculation method was derived by using the effective inertia moment method and the stiffness analysis method respectively combined with the material properties of UHPC. Through experimental investigations of 12 UHPC test beams, it is found that the immediate stiffness was better calculated by the two immediate stiffness calculation methods and the accuracy satisfied engineering requirements. Compared with the stiffness analysis method, the values calculated from the effective inertia moment method were closer to experimental values. © 2019, Engineering Mechanics Press. All right reserved.
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页码：146 / 154and164
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