为获得抗震塌性能优异的高强钢板，通过在实验室试制、现场抗震塌爆炸试验及数值计算的方法，对高强钢板的轧制工艺、热处理方法和混凝土-钢板双层结构的抗震塌效果进行了对比分析。结果表明：冷速达到30℃/s时，钢板试样组织由单一的马氏体组成。采用双道次压缩工艺，奥氏体再结晶区应控制在1000℃以上，能够保证轧制过程处于奥氏体再结晶区且充分细化晶粒；对于奥氏体未再结晶区轧制，第二阶段开轧温度控制在880~980℃之间。910℃保温30min水淬+600℃保温50min回火的调质工艺得到了完全的回火索氏体组织，细粒状的渗碳体弥散的分布在铁素体基体中，此时高强钢板具有最优的综合力学性能。采用6mm厚高强钢板为背板的靶标，混凝土用量减少25%、钢材用量减少25%、变形减小了42mm且混凝土板的破坏程度、范围也明显减小；说明高强钢板具有更好的抗爆炸震塌效果，抗震塌系数可取为0.196。
Abstract
In order to obtain a high-strength steel sheet with excellent explosion-caused collapse resistance, the rolling process and heat treatment method of the high-strength steel sheet and the anti- collapse effect of the concrete-steel double-layer structure were studied. The research mainly adopts the methods of laboratory trial production, on-site explosive collapse test and numerical calculation. The results show that when the cooling rate reaches 30℃/s, the steel plate sample structure is composed of a single martensite. The double-pass compression process is adopted, and the temperature of the austenite recrystallization zone is controlled above 1000°C, which can ensure that the rolling process is in the austenite recrystallization zone and the grains are fully refined. For the rolling in the austenite unrecrystallized zone, the temperature of the second-stage start-up rolling is controlled between 880 and 980°C. The tempering process of water quenching at 910°C for 30 minutes and tempering at 600°C for 50 minutes can be used to obtain a complete tempered sorbite structure. The fine-grained cementite is dispersed in the ferrite matrix, and the high-strength steel plate has the best comprehensive mechanical properties at this time. Using 6mm thick high-strength steel plate as the target backplane, the amount of concrete is reduced by 25%, the amount of steel is reduced by 25%, the deformation is reduced by 42mm, and the damage degree and scope of the concrete slab are also significantly reduced, indicating that the high-strength steel plate has a better anti-explosive collapse effect, and the anti-collapse coefficient can be taken as 0.196.
关键词
抗震塌 /
爆炸试验 /
轧制工艺 /
热处理方法 /
双层结构 /
抗震塌系数
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Key words
anti-collapsing /
explosion test /
rolling process /
heat treatment method /
double layer structure /
coefficient of anti-collape
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参考文献
[1] OHKUBO K, BEPPU M, OHNO T, et al. Experimental study on the effectiveness of fiber sheet reinforcement on the explosive-resistant performance of concrete plates[J]. International Journal of Impact Engineering, 2008, 35(12): 1702-1708. DOI:10.1016/ j.ijimpeng. 2008.07.022
[2] Wu C, Oehlers D J, Rebentrost M, Leach J, Whittaker A S. Blast testing of ultra-high performance fibre and FRP-retrofitted concrete slabs [J]. Engineering Structures, 2009, 31: 2060-2069. DOI:10.1016/ j.engstruct. 2009. 03. 020
[3] HULTON F G, GOUGH M S. The development of steel-plate/ reinforced concrete composite panels to resist explosive attack[C]//Proceedings of the 9th International Symposium of Interaction of the Effects on Munitions with Structures. Berlin,Germany :ISIEMS 1999.
[4] COUGHLIN M A, MUSSELMAN E S, SCHOKKER AJ,et al. Behavior of portable fiber reinforced concrete vehicle barriers subject to blasts from contact charges [J].International Journal of Impact Engineering,2009, 37(5)：521-529.
[5] 焦楚杰,孙伟,高培正. 钢纤维高强混凝土抗爆炸研究[J].工程力学,2008,25(3)：158-166.
JIAO C J,SUN W,GAO P Z. Study on sheel fiber reinforced high strength concrete subject to blast loading[J]. Engineering Mechanics,2008,25(3):158-166. (inChinese)
[6] 何虎成,刘晓华,唐德高.单体冲击效应试验的数值模拟[J]振动与冲击,2007,26(11):91-94.
HE H C,LIU X H, TANG D G. Numerical simulation of single impact test[J] Journal of Vibration and shock, 2007, 26(11): 91-94.
[7] 王明洋,张胜民,国胜兵. 接触爆炸作用下钢板-钢纤维混凝土遮弹层设计方法(Ι)[J]．爆炸与冲击,2002,22(1):40-45.
WANG M Y,ZHANG S M,GUO S B．Design method of steel fiber concrete shelter plate under contact detonation （Ι）[J]．Explosion and Shock Waves,2002,22(1):40-45. (in Chinese)
[8] 王明洋,钱七虎,赵跃堂. 接触爆炸作用下钢板-钢纤维混凝土遮弹层设计方法(Ⅱ)[J]．爆炸与冲击,2002,22(2):l63-l68.
WANG M Y, QIAN Q H, ZHAO Y T. Design method of steel fiber concrete shelter plate under contact detonation (Ⅱ) [J]．Explosion and Shock Waves, 2002, 22(2): 163-l68．(in Chinese)
[9] 柳锦春,方秦. 爆炸荷载作用下内衬钢板的混凝土组合结构防震塌的工程计算方法[J].防护工程,2008,30(4):31-34.
LIU J C, FANG Q. The engineering calculation method of steel-backed concrete composite structures for antiscabbing under blast loading[J]. Protective Engineering,2008,30(4):31-34. (in Chinese)
[10] 柳锦春,方秦,张亚栋, 等. 爆炸荷载作用下内衬钢板的混凝土组合结构的局部效应分析[J].兵工学报,2004,25(6):773-776.
LIU J C,FANG Q,ZHANG Y D,et al. Analysis of local effects on steel-backed concrete composite structures under blast loading[J]. Acta Armamentarii, 2004, 25(6): 773-776.(in Chinese)
[11] 韩国建,程国亮,杨进勇, 等. 双向余弦三维波纹钢板-混凝土复合结构抗震塌性能研究[J].防护工程,2013,35(6):13-17.
HAN G J,CHENG G L,YANG J Y,et al. Research on anti-collapse ability of bidirectional cosine threedimensional corrugated steel place-reinforced concrete composite structure[J]. Protective Engineering , 2013,35(6):13-17.(in Chinese)
[12] 杨建超,汪剑辉,陈力等．POZD 涂层钢筋混凝土板抗震塌性能试验研究[J].兵工学报. 2021, 42(1): 133-140.
YANG J C,WANG J H,CHEN L, et al. Experimental Study on Anti-collapsing of POZD Coated Reinforced Concrete Slab [J]. Acta Armamentarii, 2021, 42(1): 133-140. (in Chinese)
[13] 汪维, 杨建超, 汪剑辉, 高伟亮, 王幸. POZD涂层方形钢筋混凝土板抗接触爆炸试验研究[J]. 爆炸与冲击, 2020, 40(12): 121402.
WANG W, YANG J C, WANG J H,et al. Experimental Research on Anti-contact Explosion of POZD CoatedSquare Reinforced Concrete Slab [J]. Explosion And Shock Waves, 2020, 40(12): 121402(in Chinese)
[14] 张想柏,杨秀敏,陈肇元. 接触爆炸钢筋混凝土板的震塌效应[J]. 清华大学学报（自然科学版）,2006,46(6):765-768.
ZHANG X B, YANG X M, CHEN Z Y. Explosion spalling of reinforced concrete slabs with contact detonations [J].Journal of Tsinghua University（Science and Technology）,2006,46(6):765-768.(in Chinese).
[15] 李耀,李和平,巫绪涛.混凝土HJC动态本构模型的研究[J].合肥工业大学学报（自然科学版）,2009,32(8):1244-1248.
LI Y, LI H P, WU X T. Research on the HJC dynamic constitutive model for concrete[J]. Journal of Hefei Universit of Technology（Science and Technology）. 2009,32(8): 1244-1248. (in Chinese)
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