附加交叉斜筋与环形钢筋对RC板抗爆性能的影响
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摘要
为了研究附加交叉斜筋与环形钢筋对钢筋混凝土板(RC板)抗爆性能的影响,采用LS-DYNA软件对爆炸荷载作用下RC板进行了数值分析。选取典型的RC板抗爆试验文献作为参考依据验证了数值分析方法的正确性,并研究了爆炸荷载作用下,附加交叉斜筋与环形钢筋的RC单向板与RC双向板的动力响应与破坏形态。结果表明,选择合理的材料模型,数值分析结果可以精确地与试验结果相吻合。附加交叉斜筋与环形钢筋的单向RC板与双向RC板可以有效减小板中心最大位移与最大加速度,更加充分发挥受力钢筋的作用,降低板的破坏程度。附加交叉斜筋与环形钢筋均可提高RC板的抗爆性能,且提高程度大致相等。
In order to study the influence of anti-explosion performance for RC slab with additional cross reinforced and circular reinforced, numerical analysis was carried out for RC slab under blast load using LS-DYNA. The typical experimental literature of RC slab was selected as the reference basis to verify the correctness of numerical analysis method.The dynamic response and failure pattern of RC one-way slab and RC two-way slab with additional cross reinforced and circular reinforced under blast load was studied. The results show that numerical analysis can be exactly in accordance with the experimental results for using reasonable material models. Both one-way slab and two-way slab with additional cross reinforced and circular reinforced can reduce the central max-displacement and max-acceleration effectively, give full play to the role of reinforcement, and decrease the damage of those RC slabs. Both additional cross reinforced and circular reinforced can improve the anti-explosion performance of RC slab and the improvement is roughly equal.
In order to study the influence of anti-explosion performance for RC slab with additional cross reinforced and circular reinforced, numerical analysis was carried out for RC slab under blast load using LS-DYNA. The typical experimental literature of RC slab was selected as the reference basis to verify the correctness of numerical analysis method.The dynamic response and failure pattern of RC one-way slab and RC two-way slab with additional cross reinforced and circular reinforced under blast load was studied. The results show that numerical analysis can be exactly in accordance with the experimental results for using reasonable material models. Both one-way slab and two-way slab with additional cross reinforced and circular reinforced can reduce the central max-displacement and max-acceleration effectively, give full play to the role of reinforcement, and decrease the damage of those RC slabs. Both additional cross reinforced and circular reinforced can improve the anti-explosion performance of RC slab and the improvement is roughly equal.
引文
[1]龚顺风,邓欢,朱升波,等.近爆作用下钢筋混凝土板动态破坏的数值模拟研究[J].振动与冲击,2012,31(2):20-24.
[2]阎石,张亮,王丹.钢筋混凝土板在爆炸荷载作用下的破坏模式分析[J].沈阳建筑大学学报,2005,21(3):177-180.
[3]李忠献,师燕超,史祥生.爆炸荷载作用下钢筋混凝土板破坏评定方法[J].建筑结构学报,2009,30(6):60-66.
[4]汪维.钢筋混凝土构件在爆炸荷载作用下的毁伤效应及评估方法研究[D].长沙:国防科技大学,2012.
[5]孙文彬.钢筋混凝土板的爆炸荷载试验研究[J].辽宁工程技术大学学报:自然科学版,2009,28(2):217-220.
[6]周清,张云海,毛允波.典型民用建筑内爆炸波传播机理[J]山东科技大学学报:自然科学版2009,28(6):36-44.
[7]李忠献,师燕超.建筑结构抗爆分析理论[M].北京:科学出版社,2015.
[8]Bischoff P H,Perry S H.Compressive behavior of concrete at high stain rate[J].Material and Structure,1991,24(144):425-450.
[9]Malvar L.Review of static and dynamic properties of steel reinforcing bars[J].ACI Material Journal,1998,95(5):609-616.
[10]都浩,邓芃,杜荣强.爆炸荷载作用下钢筋混凝土梁动力响应的数值分析[J].山东科技大学学报:自然科学版,2010(6):50-54.
[11]田力,付协伟.爆炸荷载作用下高层钢筋混凝土框架结构的连续倒塌机理研究[J].科学技术与工程,2016(3):232-238.
[12]师燕超,李忠献,郝洪.爆炸荷载作用下钢筋混凝土框架的连续倒塌分析[J].解放军理工大学学报,2007(6):652-658.
[13]LS-DYNA.Keyword User,s Manual.Livermore,California:Livermore Software Technology Corporation,2006.
[14]李裕春,石党勇,赵远.ANSYS/LS-DYNA11.0基础理论与工程实践[M].北京:中国水利水电出版社,2008.
[15]周继凯,庄天文,慕建磊.爆炸荷载下钢筋混凝土框架连续倒坍特性及影响因素研究[J].混凝土,2015(4):5-13.
[16]杜仇,刘永军,李锡鑫.爆炸荷载下圆截面-混凝土-CFRP-混凝土组合柱动力响应数值模拟[J].水利与建筑工程学报,2016(5)55-60.
[2]阎石,张亮,王丹.钢筋混凝土板在爆炸荷载作用下的破坏模式分析[J].沈阳建筑大学学报,2005,21(3):177-180.
[3]李忠献,师燕超,史祥生.爆炸荷载作用下钢筋混凝土板破坏评定方法[J].建筑结构学报,2009,30(6):60-66.
[4]汪维.钢筋混凝土构件在爆炸荷载作用下的毁伤效应及评估方法研究[D].长沙:国防科技大学,2012.
[5]孙文彬.钢筋混凝土板的爆炸荷载试验研究[J].辽宁工程技术大学学报:自然科学版,2009,28(2):217-220.
[6]周清,张云海,毛允波.典型民用建筑内爆炸波传播机理[J]山东科技大学学报:自然科学版2009,28(6):36-44.
[7]李忠献,师燕超.建筑结构抗爆分析理论[M].北京:科学出版社,2015.
[8]Bischoff P H,Perry S H.Compressive behavior of concrete at high stain rate[J].Material and Structure,1991,24(144):425-450.
[9]Malvar L.Review of static and dynamic properties of steel reinforcing bars[J].ACI Material Journal,1998,95(5):609-616.
[10]都浩,邓芃,杜荣强.爆炸荷载作用下钢筋混凝土梁动力响应的数值分析[J].山东科技大学学报:自然科学版,2010(6):50-54.
[11]田力,付协伟.爆炸荷载作用下高层钢筋混凝土框架结构的连续倒塌机理研究[J].科学技术与工程,2016(3):232-238.
[12]师燕超,李忠献,郝洪.爆炸荷载作用下钢筋混凝土框架的连续倒塌分析[J].解放军理工大学学报,2007(6):652-658.
[13]LS-DYNA.Keyword User,s Manual.Livermore,California:Livermore Software Technology Corporation,2006.
[14]李裕春,石党勇,赵远.ANSYS/LS-DYNA11.0基础理论与工程实践[M].北京:中国水利水电出版社,2008.
[15]周继凯,庄天文,慕建磊.爆炸荷载下钢筋混凝土框架连续倒坍特性及影响因素研究[J].混凝土,2015(4):5-13.
[16]杜仇,刘永军,李锡鑫.爆炸荷载下圆截面-混凝土-CFRP-混凝土组合柱动力响应数值模拟[J].水利与建筑工程学报,2016(5)55-60.