| 测定混凝土应变软化曲线的J积分法 |
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| 引用本文： | 段树金 李彦军 等. 测定混凝土应变软化曲线的J积分法[J]. 工程力学, 1998, 15(4): 108-115 |
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| 作者姓名： | 段树金 李彦军 等 |
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| 作者单位： | [1]石家庄铁道学院，石家庄050043 [2]华北水利水电学院，邯郸056021 |
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| 基金项目： | 国家教委回国留学人员基金，水利水电科学基金 |
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| 摘 要： | 本文提供用普通材料试验机对含有不同初始裂缝深度混凝土劈裂试件进行断裂试验的结果。试验得到了稳定的荷载位移全过程曲线。求得了断裂韧度JIC、δC、断裂能GF；并由J积分法推导出了混凝土材料的拉应变软化曲线。
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| 关 键 词： | 混凝土 劈裂 荷载位移曲线 断裂参数 应变软化曲线 |
DETERMINING CONCRETE STRAIN-SOFTENING CURVE BY THE J-INTEGRAL METHOD |
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| Duan Shujin, Li Yunfeng. DETERMINING CONCRETE STRAIN-SOFTENING CURVE BY THE J-INTEGRAL METHOD[J]. Engineering Mechanics, 1998, 15(4): 108-115 |
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| Authors: | Duan Shujin Li Yunfeng |
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| Abstract: | With the ordinary material testing machine, the fracture testing results of the concrete wedge splitting specimen are presented in this paper. Consistent load-displacement curves are obtained, and the fractUre toughness JIC,δC, fracture energy GF are determined,then the concrete strain-softening curve is deduced by using the J-integral method. |
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| Keywords: | concrete wedge splitting load-displacement curve fracture parameter stransoftening curve |
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