| 预应力混凝土板构件的冲击力学行为分析 |
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| 引用本文： | 张巍,李国斌,强士中.预应力混凝土板构件的冲击力学行为分析[J].兵器材料科学与工程,2006,29(3):33-36. |
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| 作者姓名： | 张巍 李国斌 强士中 |
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| 作者单位： | 西南交通大学,土木工程学院,四川,成都,610031;太原理工大学,建筑与环境工程学院,山西,太原,030024;中国兵器科学研究院,宁波分院,浙江,宁波,315103;西南交通大学,土木工程学院,四川,成都,610031 |
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| 摘 要： | 利用非线性动力有限元方法,对预应力混凝土板和钢筋混凝土板在杆式动能弹冲击下的动力响应过程进行了数值模拟,对两类构件的冲击力学行为进行了力学分析和比较。研究表明,预应力对减轻反射拉伸波引起的层裂效应,克服加载面撞击影响边缘区域的拉应力,提高构件在整体变形过程中的抗裂性等方面均有一定的作用。
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| 关 键 词： | 预应力混凝土构件 非线性有限元 冲击力学 数值模拟 |
| 文章编号： | 1004-244X（2006）03-0033-04 |
| 收稿时间： | 2005-11-28 |
| 修稿时间： | 2006-02-27 |
Mechanical behaviour of prestressed concrete slab under impact |
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| ZHANG Wei,LI Guo-bin,QIANG Shi-zhong.Mechanical behaviour of prestressed concrete slab under impact[J].Ordnance Material Science and Engineering,2006,29(3):33-36. |
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| Authors: | ZHANG Wei LI Guo-bin QIANG Shi-zhong |
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| Affiliation: | 1.The Civil Engineering Institute of Southwest Jiaotong University, Chengdu 610031, China; 2.College of Architecture and Environment Engineering, Taiyuan University of Technology, Taiyuan 030024, China; 3.Ningbo Branch of China Academy of Ordnance Science, Ningbo 315103, China |
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| Abstract: | With the nonlinear finite element method ,simulations for the dynamic responses of prestressed concrete slab and reinforeed concrete slab to impact of a long-rod projectile were processed. The mechanical behaviour of two slabs was analyzed and compared. The study shows that the pre-compression can have an influence on mitigating the scabbing effect produced by the reflected tensile waves and eliminating the tension stress on the edge range of impact zone of loading face as well as improving structural performance of anticracking in the whole deformation. |
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| Keywords: | prestressed concrete member nonlinear finite element impact mechanics numerical simulation |
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