| 开裂准则及结构钢开孔板断裂试验 |
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| 引用本文： | 张建军,王万祯.开裂准则及结构钢开孔板断裂试验[J].甘肃科学学报,2008,20(4). |
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| 作者姓名： | 张建军 王万祯 |
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| 作者单位： | 1. 江苏火花钢结构集团,设计部,江苏,徐州,221151
2. 兰州理工大学,土木工程学院,甘肃,兰州,730050 |
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| 基金项目： | 甘肃省自然科学基金，甘肃省教育厅科研项目，兰州理工大学建工系77级校友基金 |
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| 摘 要： | 参照混凝土5参数破坏准则,给出了结构钢在σm>0范围内的旋转抛物面断裂准则.以结构钢屈服面和断裂面相切于三向等拉伸破坏点为假设,导出了结构钢的屈服面方程.并对10个结构钢作了开孔板拉伸断裂试验,结果显示:断裂面有明显的剪切滑移痕迹,断裂类型为正断和剪断混合型.通过对开孔板断裂试验的数值模拟分析,验证了建议的断裂准则具有较高精度,并给出了结构钢抗断设防图.
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| 关 键 词： | 结构钢 断裂 屈服 应力三维度 数值模拟 |
Crack Criterion and Fracture Test of Constructional Steel Plates with Hole |
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| ZHANG Jian-jun,WANG Wan-zhen.Crack Criterion and Fracture Test of Constructional Steel Plates with Hole[J].Journal of Gansu Sciences,2008,20(4). |
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| Authors: | ZHANG Jian-jun WANG Wan-zhen |
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| Institution: | 1.Department of Designing;Jiangsu Huohua Steel Structure Group;Xuzhou 221151;China;2.School of Civil Engineering;Lanzhou University of Science and Technology;Lanzhou 730050;China |
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| Abstract: | Referring to the failure criterion of concrete,a new fracture criterion which had rotary paraboloid in the scope of σm>0,was given out.The rotary paraboloid yield function was deduced on the assumption that the constructional steel yielded and fractured at the same time in tri-axial mean tension stress-state.Simulated results of constructional steel plates with hole verified the high accuracy of the suggested fracture criterion.The fracture design frame of constructional steel was proposed. |
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| Keywords: | structural steel fracture yield three-dimensional stress space numerical simulation |
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