[1]赵志方,张小刚,周厚贵,等.长江三峡大坝混凝土双K断裂参数试验研究[J].深圳大学学报理工版,2007,24(4):363-367.
 ZHAO Zhi-fang,ZHANG Xiao-gang,ZHOU Hou-gui,et al.Experimental study for determining double-K fracture parameters of the Three Gorges Dam concrete[J].Journal of Shenzhen University Science and Engineering,2007,24(4):363-367.
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长江三峡大坝混凝土双K断裂参数试验研究()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第24卷
期数:
2007年4期
页码:
363-367
栏目:
土木建筑工程
出版日期:
2007-10-30

文章信息/Info

Title:
Experimental study for determining double-K fracture parameters of the Three Gorges Dam concrete
文章编号:
1000-2618(2007)04-0363-05
作者:
赵志方1张小刚2周厚贵3马金刚3
1)浙江工业大学建筑工程学院,杭州 310014;
2)深圳大学土木工程学院,深圳市土木工程耐久性重点实验室,深圳 518060;3.中国葛洲坝集团公司,宜昌 443002
Author(s):
ZHAO Zhi-fang1ZHANG Xiao-gang2ZHOU Hou-gui3and MA Jin-gang3

1)School of Civil Engineering and Architecture,Zhejiang University of Technology,Hangzhou 310014,P.R.China
2)College of Civil Engineering,Shenzhen Municipal Key Laboratory on Durability of Civil Engineering,Shenzhen University,Shenzhen 518060,P.R.China
3)China Gezhouba Group Co Ltd,Yichang 443002,P.R.China

关键词:
大坝混凝土湿筛混凝土软化本构关系双K断裂参数直接拉伸试验三点弯曲试验长江三峡水利枢纽
Keywords:

dam concretewet-screening concretesoftening constitutive relationdouble-K fracture parameters

uniaxial tension testthree-point bending notched beam testthe Three Gorges Dam

分类号:
TV 313;TU 528
文献标志码:
A
摘要:

对长江三峡工程泄洪坝段原材料制成的大坝混凝土及其湿筛混凝土试件做直接拉伸试验,得到大坝混凝土及其湿筛混凝土断裂过程区的本构关系.结合标准三点弯曲切口梁试验,运用双K断裂模型,得到大坝混凝土和湿筛混凝土的双K断裂参数.试验结果表明,三峡大坝混凝土的起裂和失稳韧度均大于其湿筛混凝土,前者分别为后者的1.14和 1.19倍.

Abstract:

Using dam and wet-screening concrete specimens made of raw componential materials,as used in the discharge segment of the Three Gorges Dam,uniaxial tension tests were conducted to achieve the softening constitutive relations of fracture process zone of the dam and wet-screening concrete. Combining with three-point bending notched beam tests, adopting double-K fracture model,the double-K fracture parameters of the dam and wet-screening concrete were obtained. The results show that initial fracture toughness and unstable fracture toughness of the dam concrete are 1.14 times and 1.19 times those of the wet-screening concrete respectively.

参考文献/References:

[1]赵志方.基于裂缝粘聚力的大坝混凝土断裂特性研究[R].清华大学博士后出站报告,北京:清华大学,2004.
[2]李庆斌,段云岭,王光纶.大尺寸混凝土试件直接拉伸特性研究[J].混凝土研究杂志,2002,54(5): 385-391(英文版).
[3]徐世烺,Reinhardt H W. 准脆性材料中裂缝扩展的双K断裂准则,第一部分:裂缝扩展的试验研究[J]国际断裂期刊,1999,98(2): 111-149(英文版).
[4]徐世烺,Reinhardt H W. 准脆性材料中裂缝扩展的双K断裂准则,第二部分:三点弯曲梁的测试和分析评价方法[J]国际断裂期刊,1999, 98(2): 151-177(英文版).
[5]徐世烺,Reinhardt H W. 准脆性材料中裂缝扩展的双K断裂准则,第三部分:楔入劈拉试件 [J] 国际断裂期刊,1999,98(2):179-193(英文版).
[6]赵志方,徐世烺.试件尺寸对混凝土新KR阻力曲线的影响[J].水利学报,2001,12 :48-55.
[1]ZHAO Zhi-fang.? Research on fracture behaviors of dam concrete based on the crack cohesive force[D]. Postdoctoral Research Report of Tsinghua University and China Gezhouba Group Co,Beijing: Tsinghua University, 2004(in Chinese).
[2]LI Qing-bin, DUAN Yun-ling, WANG Guang-lun. Behavior of large concrete specimen in uniaxial tension [J]. Magazine of Concrete Research, 2002,54(5): 385-391.
[3]XU Shi-lang, Reinhardt H W. Determination of double-K criterion for crack propagation in quasi-brittle fracture, Part I:experimental investigation of crack propagation [J]. International Journal of Fracture, 1999, 98(2): 111-149.
[4]XU Shi-lang, Reinhardt H W. Determination of double-K criterion for crack propagation in quasi-brittle fracture, Part II:analytically evaluating and practical measuring methods for three-point bending notched beams [J]. International Journal of Fracture, 1999, 98(2): 151-177.
[5]XU Shi-lang, Reinhardt H W. Determination of double-K criterion for crack propagation in quasi-brittle fracture, part III:compact tension specimens and wedge splitting specimens [J].International Journal of Fracture, 1999,98(2):179-193.
[6]ZHAO Zhi-fang, XU Shi-lang. Influence of specimen size upon new KR resistance curves of concrete [J].? Journal of Hydraulic Engineering,2001,12:48-55 (in? Chinese).

备注/Memo

备注/Memo:
收稿日期:2007-03-22;修回日期:2007-09-18
基金项目:国家自然科学基金资助项目(50409005);浙江省自然科学基金资助项目(Y106486)
作者简介:赵志方(1970-),女(汉族),河南省洛阳市人,浙江工业大学教授、博士.E-mail:zhaozhifang007@hotmail.com
更新日期/Last Update: 2007-12-05