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Compressive Constitutive Model of Ultra-high Performance Concrete Confined by Steel Tube
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Qiuru LU, Lihua XU, Yin CHI, Min YU, Yingxin YANG
Journal of the Chinese Ceramic Society | 2020, 48(8) : 1201 - 1211
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Journal of the Chinese Ceramic Society | 2020, 48(8): 1201-1211
• Special Issue for Ultra-high Performance ConcreteⅠ •
Compressive Constitutive Model of Ultra-high Performance Concrete Confined by Steel Tube
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Qiuru LU, Lihua XU, Yin CHI, Min YU, Yingxin YANG
Affiliations
  • School of Civil Engineering, Wuhan University, Wuhan 430070, China

    • LU Qiuru (1993-), female, Doctorial candidate. E-mail:

About Author:

LU Qiuru (1993-), female, Doctorial candidate. E-mail:

Published: 2020-08-20 doi: 10.14062/j.issn.0454-5648.20200196
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To investigate the constitutive model of ultra-high performance concrete confined by steel tube, axial compressive experiments were conducted on 42 confined UHPC and 3 unconfined UHPC specimens. Failure modes and stress-strain curves were obtained. Effects of steel fiber volume fraction and aspect ratio, polypropylene fiber volume fraction and aspect ratio and steel tube thickness on the stress-strain curves were analyzed. The results show that steel tube thickness is a main affecting factor. The peak stress and corresponding strain increase with the increase in the thickness. Fibers are beneficial to the improvement in the peak stress and strain. Steel fiber volume fraction has an obvious effect on the peak stress and strain. At a proper volume fraction of polypropylene fiber, the peak stress increases and the peak strain first decreases and then increases with increasing steel fiber volume fraction. In addition, the corresponding constitutive models were also proposed based on the typical stress-strain curves of confined UHPC.

ultra-high performance concrete  /  confinement  /  steel tube  /  fiber  /  constitutive model
卢秋如, 徐礼华, 池寅, 余敏, 杨英欣. 钢管约束超高性能混凝土受压本构模型. 硅酸盐学报, 2020 , 48 (8) : 1201 -1211 . DOI: 10.14062/j.issn.0454-5648.20200196
Qiuru LU, Lihua XU, Yin CHI, Min YU, Yingxin YANG. Compressive Constitutive Model of Ultra-high Performance Concrete Confined by Steel Tube[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (8) : 1201 -1211 . DOI: 10.14062/j.issn.0454-5648.20200196
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Year 2020 volume 48 Issue 8
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Article Info
doi: 10.14062/j.issn.0454-5648.20200196
  • Receive Date：2020-03-25
  • Online Date：2026-10-29
  • Published：2020-08-20
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History
  • Received：2020-03-25
  • Revised：2020-05-10
Funding
Affiliations
    School of Civil Engineering, Wuhan University, Wuhan 430070, China

Corresponding:

XU Lihua (1962-), female, Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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