[1]焦楚杰,孙伟,秦鸿根,等.钢纤维高强混凝土单轴受压本构方程[J].东南大学学报(自然科学版),2004,34(3):366-369.[doi:10.3969/j.issn.1001-0505.2004.03.019]
 Jiao Chujie,Sun Wei,Qin Honggen,et al.Constitutive equation of SFRHSC under uniaxial compression[J].Journal of Southeast University (Natural Science Edition),2004,34(3):366-369.[doi:10.3969/j.issn.1001-0505.2004.03.019]
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钢纤维高强混凝土单轴受压本构方程()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
34
期数:
2004年第3期
页码:
366-369
栏目:
土木工程
出版日期:
2004-05-20

文章信息/Info

Title:
Constitutive equation of SFRHSC under uniaxial compression
作者:
焦楚杰 孙伟 秦鸿根 张亚梅 蒋金洋
东南大学材料科学与工程系, 南京 210096
Author(s):
Jiao Chujie Sun Wei Qin Honggen Zhang Yamei Jiang Jinyang
Department of Materials Science and Engineering, Southeast University, Nanjing 210096, China
关键词:
钢纤维 高强混凝土 单轴压缩 本构方程
Keywords:
steel fiber high strength concrete uniaxial compression constitutive equation
分类号:
TU377
DOI:
10.3969/j.issn.1001-0505.2004.03.019
摘要:
采用微机控制电液伺服万能试验机,对纤维体积分数Vf为0~3%的钢纤维高强混凝土(SFRHSC)进行了单轴压缩试验,根据实测的应力-应变曲线的特点提出了含2个参数AB的单轴受压本构方程.A,B均随Vf的增大而增大,分别明确地反映了钢纤维对混凝土基体的增强和增韧能力.A越大,材料抗压强度fc与弹性极限应力的差值越大; B越大,曲线下降段越平缓.本文还给出了A,BVf, fc之间的关系式.
Abstract:
Uniaxial compression experiments for the steel fiber reinforced high strength concrete(SFRHSC)were conducted by using a multifunction servocontrolled testing machine. The volume fraction Vf of steel fibers of SFRHSC ranges from 0 to 3%. On the basis of the stress-strain curves the constitutive equations were established. These equations satisfy all the characteristics of those curves. The equations have two key parameters A and B. Both A and B increase as Vf increases, which clearly shows that the strength and toughness of the matrix are enhanced by steel fibers. The larger the A, the greater the difference between the compressive strength fc and elastic limit stress; the larger the B, the flatter the descending portion of the curve. Finally, the mathematical expressions of A, B and Vf, fc are also presented.

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备注/Memo

备注/Memo:
基金项目: 国家自然科学基金重点资助项目(59938170)、解放军第二炮兵军事工程资助项目.
作者简介: 焦楚杰(1974—),男,博士生; 孙伟(联系人),女,教授,博士生导师,sunwei@seu.edu.cn.
更新日期/Last Update: 2004-05-20