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DYNAMIC BEHAVIOR RESEARCH OF UNREINFORCED AND REINFORCED ANCIENT ARCHITECTURES
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摘要: 采用等效体积单元法对采用喷射混凝土方法加固的砌体结构古建筑在加固前、后抵抗地铁开挖过程中产生的爆破振动荷载的动力性能进行分析。通过分别建立加固前、后结构的模型并进行时程分析,对比结构周期、底部总剪力、顶点侧向位移和墙体的应力,得出采用喷射混凝土的加固方法,提高了结构的刚度和整体性,混凝土部分承担了爆破荷载作用下的大部分剪力,避免了古建筑被损坏。Abstract: The blasting vibration effect in the subway excavation process of a multistory masonry building strengthened by shotcrete was analyzed using representative volume element model. Finite element models for both the original structure and the strengthened one were established,and time-history analysis was performed. The effect of shotcrete strengthening on masonry walls was analysed from the structural period,structural stiffness,top lateral displacement and stress level. The result shows that the structural stiffness is effectively enhanced and integrity of the structure is improved. Since the major portion of shear force of the blasting vibration effect in the strengthened wall is resisted by the strengthening concrete layer,the stresses in the masonry wall are reduced and the structural failure is avoided.
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Gambarota L,Lagomarsino S. Damage Models for the SeismicResponse of Brick Masonry Shear Walls. PartⅠ:The Motar JointModel and Its Applications[J]. Earthquake Engineering andStructural Dynamics, 1997, 26: 423-439. [2] 王达诠. 应用 RVE 均质化方法的砌体非线性分析[D].重庆:重庆大学, 2002. [3] 施楚贤. 砌体结构理论与设计[M].2 版. 北京:中国建筑工业出版社, 2003. [4] 朱伯龙. 砌体结构设计原理[M]. 上海: 同济大学出版社,1991. [5] 刘桂秋. 砌体结构基本受力性能的研究[D].长沙: 湖南大学, 2005. [6] GB 67222003 爆破安全规程[S]. [7] 徐祖林, 叶志明, 陈玲俐. 匀质化方法在砌体结构地震反应分析中的应用[J].建筑结构, 2008(10):471-476. [8] 刘振宇, 叶燎原, 潘文. 等效体积单元(RVE) 在砌体有限元分析中的应用[J].工程力学, 2003, 20(2):31-35. [9] 王鑫, 路洲导, 吕西林. 碳纤维技术在砌体结构抗震加固中的试验研究[J].工业建筑, 2003, 33(9):11-13. -
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