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混凝土灌芯纤维增强石膏板T形节点构件试验研究及有限元分析

Experimental Research and Finite-element Analysis on the Seismic Behavior of Joints of T-type Builded with Concrete-filled Fiber-reinforced Plasterboard

【作者】 张月楼

【导师】 姜忻良;

【作者基本信息】 天津大学 , 结构工程, 2004, 硕士

【摘要】 绿色环保建筑材料作为绿色建筑的重要因素之一,在建筑业的可持续发展中起着重要的作用。澳大利亚生产的新型安全环保型建筑材料速成墙板(纤维增强石膏板)具有很多在建筑结构中应用的优势,混凝土灌芯纤维增强石膏板则是传统普通砌体粘土砖的良好替代材料。目前对其结构性能的研究还处于初级阶段,鉴于其在建筑结构特别是住宅建筑中的应用优势,国内欲引进此种建筑材料的生产设备。但澳洲不考虑震害,故对混凝土灌芯纤维增强石膏板抗震性能的研究具有重要的理论意义和工程价值。本试验及其研究工作所取得的研究成果和创新点主要表现在以下两个方面:1、通过对5组混凝土灌芯纤维增强石膏板T形节点构件在低周反复荷载下的试验研究,分析了混凝土灌芯纤维增强石膏板纵横墙节点构件在竖向和侧向荷载作用下的抗震性能(包括承载能力、变形能力、刚度退化、滞回环形状、延性和耗能能力等)以及结构的破坏特征,并和澳洲设计构件作了相应的对比研究,得出了混凝土纤维增强石膏板T形节点构件配置水平拉接筋形式可以取代配置箍筋形式和抗剪性能优于普通砌体纵横墙节点构件的结论。为混凝土灌芯纤维增强石膏板纵横墙节点的抗震设计提供了一定的试验依据和理论指导。2、利用大型通用有限元分析软件ANSYS对混凝土灌芯纤维增强石膏板T形节点构件进行了非线性有限元分析,建立了恰当的力学分析模型。通过建立适用于反复荷载作用下的混凝土灌芯纤维增强石膏板的本构关系,考虑材料非线性和刚度退化等因素的影响,采用APDL参数化程序设计语言编制了命令流文件,对构件在低周反复荷载下的受力性能进行了非线性有限元分析,并和试验结果进行了比较,二者吻合较好。希望能为今后对混凝土灌芯纤维增强石膏板结构进行计算机模拟试验提供参考依据。

【Abstract】 As one of the important factors of green struction,green construction materialplays an important in the sustainable development of construction industry.New safetyconstruction material—rapid wall( fiber-reinforced plasterboard ) have manyadvantages when applied in buildings and concrete-filled fiber-reinforced plasterboard(CFFRP) is the excellent succedaneum of the conventional constrction material—claysoil brick.At present, research on CFFRP is still preliminary.Due to the advantages instructure especially in residential construction, some demestic departments plan tointroduce the material fiber-reinforced plasterboard (rapid wall).However,in Australiano seismic behavior is in consideration.So the research on the seismic behavior ofCFFRP has important theoretical significance and engineering value.In this dissertation, the major achievements and the originality innovation areobtained as follows:1、According to the tests of 5 CFFRP Joints specimens of T type underhorizontal-low-cyclic loading with constant vertical loading, fundamental seismicbehavior of such walls and the failure feature have been investigated. Based on thoseabove, comparing the different type of specimens, offering effective reference for laterjoints design of fiber-reinforced plasterboards with core columns.In conclusion,drawing the conclusion that the capacity of shearing force of the T joints is better thanthat of the clay soil brick Joints, offering some testing basis and theoretics guidance ofthe seismic fortification design of the longitudinal and transverse walls joint made ofthe concrete-filled fiber-reinforced plasterboard.2、By using general purpose finite element modeling software-ANSYS, some ofthe T joints are made nonlinear finite-element analysis and develop mechanic analysismodel. based on the stress-strain property of fiber-reinforced plasterboard andreinforced concrete and considering the influences of the nonlinearity and the stiffnessregressing and so on,the nonlinear finite element analysis on the sesmic behavior ofthe CFFRP joint specimens under cyclic loads is carried out by employing thecommand stream edited with ANSYS Parametic Design Language,and by comparisonof analysis results and experimental results,conclusion is obtained that the calculatedresults are much coincided with the tested results.Offering an effective reference forlater computer simulative experiment of CFFRP structure.

  • 【网络出版投稿人】 天津大学
  • 【网络出版年期】2006年 07期
  • 【分类号】TU528.7
  • 【被引频次】12
  • 【下载频次】217
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