钢混结构内爆拆除法数值模拟研究
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摘要
通过对内爆法爆破拆除工程实例的技术研究,分析总结了内爆法技术特点。采用静力非线性分析及力学分析方法对内爆法拆除机理进行分析探讨。论文研究使用LS-DYNA中的混凝土本构MAT159,采用分离式constrained钢筋混凝土模型,对—10层5跨的混凝土单榀结构内爆法拆除进行了数值模拟,计算分析得出了结构的响应、主要构件的内力演化以及结构失稳的临界条件,并对不同拆除顺序下结构倒塌的过程进行了模拟研究。
By studying the implosion demolition projects, the technical characteristics is summarized and analysed. Adopting nonlinear static analysis method and analytical mechanics method, the author discusses the collapsed mechanism of the structure. This paper systematically tests and verifies the concrete constitutive MAT159 prepared to use in LS-DYNA software, and through the separating constrained reinforced concrete method analyses the demolition of bottom column of 10-stories 5-spans, as well as structural response, internal force evolution of remain structural member and the crictical destabilization condition. Finally the paper analyses the effects on structure collapse by different sequential removal.
By studying the implosion demolition projects, the technical characteristics is summarized and analysed. Adopting nonlinear static analysis method and analytical mechanics method, the author discusses the collapsed mechanism of the structure. This paper systematically tests and verifies the concrete constitutive MAT159 prepared to use in LS-DYNA software, and through the separating constrained reinforced concrete method analyses the demolition of bottom column of 10-stories 5-spans, as well as structural response, internal force evolution of remain structural member and the crictical destabilization condition. Finally the paper analyses the effects on structure collapse by different sequential removal.
引文
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6.黄士辉，朱军,朱立昌等.内爆法(Implosion)拆除68m框剪结构大楼.工程爆破,2007,6
7.尤浩生.台阶爆破的计算机模拟.北京科技大学博士论文,1997
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18.余业清,钟冬望.应用有限元法模拟爆破拆除建筑物倒塌过程.武汉科技大学学报,2006,10：513-516
19.任高峰,王玉杰等.框架楼房爆破定向倾塌的数值模拟研究.工程抗震与加固改造,2005.10：94-97
20.孙金山卢文波.框架结构建筑物拆除爆破模拟技术研究.工程爆破,2004.10：1-4,7
21.韩秋善,叶序双等.钢筋混凝土烟囱爆破拆除的数值模拟研究.第六届全国工程爆破学术会论文集,深圳,1997：174-179
22.王斌,赵伏军,林大能等.筒形薄壁建筑物爆破切口形状的有限元分析.采矿技术,2005,9：95-97,132
23.戴晨,朱传云,舒大强等.DDA及其在爆破过程仿真模拟中的应用.湖北省爆破学会第六届学术会议论文集.2001，11：4-6
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25.贾金河,于亚伦.应用有限元和DDA模拟框架结构建筑物拆除爆破.爆破,2001,01：27-30
26.孙金山,卢文波,谢先启等.钢筋混凝土烟囱拆除爆破双向折叠定向倾倒方案关键技术探讨.上程爆破2004,6：6-9,24
27.骆利锋.高耸建构筑物爆破拆除倒塌过程中的动力学分析及计算机模拟.武汉：武汉科技大学,2004
28.刘世波.百米以上钢筋混凝土烟囱拆除爆破研究.北京：铁道部科学研究院,2004
29.廖巍等.岩体结构面组合对巷道围岩稳定性的影响.安全与环境程,2004,6：65-67
30.江巍巍.DDA方法在工程中的应用.南京：河海大学,2001
31.江巍.非连续变形分析(DDA)方法理论研究发展现状.黑龙江水专学报,2005,10：83-85
32. SHI Gen-hua. Manifold method of material analysis.Transactions of the Ninth Army Conference on Applied Mathematics and Computing.Minneapolish,Minncsoda,USA,1992:51-76
33.石根华.数值流形方法与非连续变形分析.裴觉民(译),北京：清华大学出版社,1997
34. ChiouYJ,LeeYM,TsayRJ.Mixed mode fracture propagation by manifold method[J].International Journal of Fracture114,2002:327-347
35.尚世仲.配高强钢筋混凝土梁的受弯性能试验研究.同济大学硕士学位论文,2007,2：14-69
36.黄士辉.国内城市高层建筑爆破拆除方式的探讨.工程爆破,12(4),2006：22-27
37.张云鹏,甘德清,郑瑞春等.拆除爆破.北京：冶金工业出版社,2002
38.贾金河.爆破拆除框架结构建筑物的力学模型及数值模拟研究.博士学位论文,北京科技大学,2000
39.杨军,胡刚等.现代爆破拆除技术.西安交通大学出版社,1988
40.秦明武.控制爆破.北京：冶金工业出版社,1993
41.汪浩.郑炳旭.拆除爆破综合技术.工程爆破,Vol.9,No.1,2003：27-31
42.李岩松.在苛刻环境中原地塌落爆破拆除建筑物.工程爆破,Vol.11.No.1.1,2005：43-44
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