混杂纤维水泥基复合材料受压损伤本构模型及试验验证

doi:10.11896/cldb.18090251

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Abstract In order to investigate the constitutive model and damage evolution rule of hybrid fiber reinforced cementitious composites (HFRCC), the damage constitutive model of specimens mixed with steel-PP and PVA-PP hybrid fibers was studied by statistical method and energy method. By introducing damage variable correction coefficient, the statistical method was optimized, method of energy based on SIR model and code for design of concrete structures were used respectively to derive damage constitutive model and parameters calculation formula. Its physical mea-ning was also discussed and uniaxial compression tests were conducted to verify the accuracy of the model. The results show that the statistical method of stress-strain curve agree well with the test results at low strain, deviation appears when strain turns large, calculate results is more accurate after the damage deformation correction coefficient is introduced, calculate results of energy method based on the SIR model in high precision and can show the residual stress under high strain. The two methods can be used to calculate the compression damage constitutive model of hybrid fiber concrete, which can be applied in engineering.

Key words： hybrid fiber reinforced cementitious composites damage constitutive model damage correction coefficient distribution parameter fiber content

Published: 29 August 2019

CLC number:

TU528

About author:: Tao Cui, Ph.D candidate in Beijing University of technology(BJUT). His research work mainly focuses on the mechanical properties of new building materials and its application in structural vibration control, and participates in topics such as the National Natural Science Foundation of China and national key projects.Haoxiang He, professor of Beijing University of Technology, doctoral tutor. He is currently the deputy director of the Institute of Disaster Prevention and Reduction of the Institute of Construction Engineering. His main research areas are structural health monitoring, structural seismic damping and structural dynamics. Since 2000, he has participated in more than 20 national and provincial (including Hong Kong) natural science funds and research projects, and has published 102 papers in academic journals and domestic and international academic conferences, among which 63 were searched by SCI and EI. 37 national invention patents were granted.

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	CUI Tao
	HE Haoxiang
	YAN Weiming
	QIAN Zengzhi
	ZHOU Daxing

Cite this article:

CUI Tao,HE Haoxiang,YAN Weiming, et al. Research on Constitutive Model of Compressive Damage of Hybrid Fiber Reinforced Cementitious Composites (HFRCC) Under Axial Compression and Experimental Verification[J]. Materials Reports, 2019, 33(20): 3413-3418.

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http://www.mater-rep.com/EN/10.11896/cldb.18090251 OR http://www.mater-rep.com/EN/Y2019/V33/I20/3413

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