[1]左清林.爆炸作用下钢筋混凝土构件性能的影响因素[J].山东建筑大学学报,2010,(05):513-518.
 ZUO Qing-lin.An analysis of the influencing factors on dynamic performance of reinforced concrete member under explosive load[J].Journal of Shandong jianzhu university,2010,(05):513-518.
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爆炸作用下钢筋混凝土构件性能的影响因素()
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《山东建筑大学学报》[ISSN:1673-7644/CN:37-1449/TU]

卷:
期数:
2010年05期
页码:
513-518
栏目:
研究论文
出版日期:
2010-10-15

文章信息/Info

Title:
An analysis of the influencing factors on dynamic performance of reinforced concrete member under explosive load
作者:
左清林
大连市建筑设计研究院有限公司,辽宁 大连 116021
Author(s):
ZUO Qing-lin
Dalian Architectural Design & Research Institute Co. Ltd, Dalian, Liaoning 116021
关键词:
爆炸荷载钢筋混凝土构件动力性能影响因素有限元算法
Keywords:
explosive loadreinforced concrete memberdynamic performanceinfluencing factorsfinite element method
分类号:
TU352.1; TU375
文献标志码:
A
摘要:
以钢筋混凝土梁柱构件的最大动态变形和构件易损处的最大内力或内应力作为构件动力性能的判别标准,考虑高应变率下钢筋和混凝土材料的动态本构关系,使用经试验验证的数值模拟方法分别比较了不同的截面形状、边界条件、跨高比和轴压比对爆炸荷载作用下钢筋混凝土构件动力性能的影响。研究结果表明,其他条件相同时,圆形截面构件比方形截面构件受到较小的爆轰冲击作用,因而具有更好的动力性能;两端固支构件比两端简支构件有更好的抗变形能力和抗弯能力,但抗剪能力较弱;随着跨高比的减小,构件的抗变形能力和抗弯能力显著增强,但抗剪能力变化不大;轴压比从0增加到0.3时,构件的动力性能有所增强,而当轴压比从0.3继续增大至1时,构件的动力性能反而减弱。
Abstract:
With the maximal dynamic deformation and the maximal internal force or stress of materials as standards of dynamic performance of reinforced concrete members under explosive load, considering the dynamic constitutive relations of concrete and steel with high strain rates, the influences of cross section shape, boundary conditions, span-depth ratio and axial compression ratio are compared by numerical simulated method, which has been calibrated by existing test data. The results show: (1) with other conditions being identical, members of circular cross section undergo less detonation impact and have better dynamic performance than members of square cross section; (2) members clamped at both ends have better deformation resistance and bending resistance but worse shear resistance than freely supported members; (3) with the decrease of span-depth ratio, members have better deformation resistance and bending resistance, but shear resistance has little change; (4) with the increase  of axial compression ratio from 0 to 0.3, the dynamic performance of members increases, but with the ongoing increase  of axial compression ratio from 0.3 to 1, the dynamic performance of members descends..
更新日期/Last Update: 2010-12-02