| 砖混组合托换梁受力性能和荷载传递方式研究 |
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| 引用本文： | 邵剑文,干钢,何勇,毛江鸿.砖混组合托换梁受力性能和荷载传递方式研究[J].建筑结构,2011(10). |
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| 作者姓名： | 邵剑文 干钢 何勇 毛江鸿 |
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| 作者单位： | 浙江大学建筑设计研究院;浙江大学结构工程研究所; |
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| 摘 要： | 托换梁受力性能及其荷载传递方式是既有砖混结构改造设计中的一个重要问题,但现行规范对此内容尚不明确。结合实际工程,利用有限元分析软件对托换梁在承重墙体拆除过程中的受力性能进行分析,并对实际结构进行全过程监测。结合有限元分析和监测结果,讨论了托换梁上部墙体的荷载传递方式。结果表明,托换梁的受力特性取决于上下结构相互变形的协调,托换梁与上部墙体形成了墙梁,而托换梁可仅考虑其自重和本层楼盖的恒、活荷载。
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| 关 键 词： | 砖混结构 加固改造 托换梁 承重墙拆除 有限元法 FBG监测 |
Study on mechanical performance and load transfer mechanism of a underpinning beam in brick-concrete structure |
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| Shao Jianwen,Gan Gang,He Yong,Mao Jianghong.Study on mechanical performance and load transfer mechanism of a underpinning beam in brick-concrete structure[J].Building Structure,2011(10). |
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| Authors: | Shao Jianwen Gan Gang He Yong Mao Jianghong |
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| Affiliation: | Shao Jianwen1,Gan Gang1,He Yong2,Mao Jianghong2(1 Architectural Design and Research Institute,Zhejiang University,Hangzhou 310027,China,2 Institute of Structural Engineering,Hangzhou 310058,China) |
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| Abstract: | The mechanical performance of the underpinning beam and its load transfer mechanism are significant but indefinite in current codes.Based on an actual project,the mechanical properties of underpinning beams were analyzed during the removal process of the bearing walls by FEM,and the real structural mechanical monitoring was also done by Fiber Bragg Grating(FBG) sensor.Through comparing the results of FEM and structural monitoring,the load transfer mechanism of the underpinning beam was discussed.The results... |
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| Keywords: | brick-concrete structure strengthening and modification underpinning beam bearing wall removal finite element method FBG monitoring |
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