本文關鍵詞：自復位防屈曲支撐及其鋼框架結構的抗震性能分析　出處：《哈爾濱工業(yè)大學》2014年碩士論文　論文類型：學位論文

  更多相關文章： 自復位防屈曲支撐 鋼框架 抗震性能 殘余變形 試驗設計

【摘要】：雖然傳統(tǒng)的抗震結構體系通過合理的設計能夠保證結構的安全，但是它們主要依靠主體結構的破壞來耗散地震能量。由于結構彈塑性變形過大引起的受力構件破壞或者震后殘余變形較大，使得結構在震后不能繼續(xù)使用并且難于修復。因此，研究一種在震后能夠恢復到原來位置的結構體系來減小結構的破壞是一個亟待解決的問題。為實現(xiàn)這種結構，本文通過自復位防屈曲支撐來控制結構最大地震響應及實現(xiàn)結構自復位。為此，本文主要進行了以下工作： （1）介紹了自復位防屈曲支撐的構造組成及組裝方式，，驗算其強度、剛度及穩(wěn)定性并闡述其工作原理、復位筋的力學性能及復位條件，最后給出支撐的性能評價指標�；贏BAQUS平臺設計了自復位防屈曲支撐并建立其實體有限元模型。 （2）對自復位防屈曲支撐進行參數(shù)分析，分別以初始彎曲、復位筋截面面積、內(nèi)核心截面面積、復位筋的彈性模量為分析參數(shù)。分析表明，自復位防屈曲支撐的耗能性能及復位性能受初始彎曲的影響不大；增加復位筋截面面積，支撐的復位能力增強，殘余變形變��；增加內(nèi)核心截面面積，支撐的復位能力減弱，殘余變形增大；復位筋的彈性模量越小，支撐的滯回曲線越飽滿，耗能能力越強，但是殘余變形也越大。 （3）采用桿單元和非線性彈簧并聯(lián)實現(xiàn)自復位防屈曲支撐構件在結構體系中的簡化建模，建立自復位防屈曲支撐鋼框架和防屈曲支撐鋼框架有限元模型，基于三條地震動記錄對應于多遇地震、罕遇地震及特大地震的地震作用，對自復位防屈曲支撐鋼框架結構進行彈塑性時程分析。從結構頂層位移反應、樓層最大位移、層間位移角、殘余變形及基底剪力等方面與防屈曲支撐鋼框架進行對比分析。研究表明，自復位防屈曲支撐在控制結構地震響應和減小殘余變形方面優(yōu)于防屈曲支撐鋼框架結構。 （4）研究自復位防屈曲支撐的第一剛度、第二剛度、預應力及內(nèi)核心截面面積四個參數(shù)的變化對結構體系抗震性能的影響。首先進行單一參數(shù)變化下的自復位防屈曲支撐鋼框架結構地震響應分析，研究了特大地震作用下各個參數(shù)對結構抗震性能的影響。然后，通過正交設計與均勻設計確定結構參數(shù)的組合方式，分析了各參數(shù)對結構抗震性能的影響，并基于極差和方差分析確定各參數(shù)對結構頂層最大位移、基底剪力及頂層殘余變形影響的順序。最后，基于正交設計和均勻設計的分析結果，建立了結構地震響應與各影響參數(shù)的回歸方程。
[Abstract]:Although the traditional seismic structure system through reasonable design can ensure the safety of the structure, but they rely mainly on the main structure of the failure to dissipate seismic energy. Due to structural elastoplastic large deformation caused by residual stress component failure or postseismic deformation is large, the structure after the earthquake can not continue to use and difficult to repair. Therefore, research a return to the original position of the structure to reduce the structural damage in the earthquake is an urgent problem to be solved. For this structure, the self reset BRB to control the seismic response of the bridge structure and Realization of self reset. Therefore, this paper carried out the following work:
(1) introduces the composition and structure of self assembling reduction of BRBs, checking its strength, rigidity and stability and expounds its working principle, mechanical properties and reinforcement of the reset reset condition, performance evaluation index is given. Based on the support of ABAQUS platform for self reset BRB and establishes the solid finite element model design.
(2) the self reset BRB parameters analysis, respectively with initial bending reinforcement cross-sectional area reduction, the core section area, elastic modulus reduction and Reinforcement Analysis for the parameters. The results show that, since the reduction of energy dissipation and anti reduction performance is affected by the initial bending buckling support is increased; a reset rib section area. Enhance the ability to support the reduction, the residual deformation becomes smaller; the increase in the core area, weaken the ability to support the reduction, the residual deformation increases; the elastic modulus reduction bar is small, support the hysteretic curve of more full capacity of energy dissipation is higher, but the residual deformation is also greater.
(3) the nonlinear spring bar element and the parallel realization of simplified modeling of self resetting of BRB components in the structure system, the establishment of self reduction of buckling restrained braced steel frame and BRB steel frame finite element model, corresponding to the earthquake records of three earthquake based on earthquake earthquake and earthquake the self reset buckling, elastic-plastic time history analysis of steel frame structure. The reaction from the top of the structure support displacement, the maximum displacement of the floor, story drift, the residual deformation and base shear and buckling restrained braced steel frame were analyzed. The results show that the self reduction of buckling restrained brace in seismic response and control to reduce the residual deformation than the buckling restrained braced steel frame structure.
(4) research on self reset BRB's first second stiffness, stiffness, impact of changes of the four parameters in the core section area of prestressed and seismic performance of the structure. The first single parameter self reset BRBs seismic response analysis of steel frame structure, study the effects of various parameters of the earthquake. On the seismic performance. Then, determine the combination of structural parameters by orthogonal design and uniform design, analyzes the influence of various parameters on the structural seismic performance, and based on the range analysis and variance analysis to determine the parameters of maximum displacement on the top of the structure, influence of base shear and top residual deformation sequence. Finally, the results of orthogonal design and based on uniform design, regression equation was established and the influence of parameters of the seismic response of the structure.

【學位授予單位】：哈爾濱工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TU391;TU352.11

【參考文獻】

相關期刊論文 前10條

1 趙俊賢;吳斌;;防屈曲支撐的工作機理及穩(wěn)定性設計方法[J];地震工程與工程振動;2009年03期

2 劉璐;吳斌;李偉;趙俊賢;;一種新型自復位防屈曲支撐的擬靜力試驗[J];東南大學學報(自然科學版);2012年03期

3 孫飛飛;劉猛;李國強;郭小康;胡寶琳;;國產(chǎn)TJ-Ⅰ型屈曲約束支撐的性能研究[J];河北工程大學學報(自然科學版);2009年01期

4 郭彥林,劉建彬,蔡益燕,鄧科;結構的耗能減震與防屈曲支撐[J];建筑結構;2005年08期

5 潘振華;潘鵬;葉列平;邱法維;;自復位鋼框架節(jié)點有限元模擬及參數(shù)分析[J];建筑結構學報;2011年03期

6 錢輝;李宏男;任文杰;陳淮;;形狀記憶合金復合摩擦阻尼器設計及試驗研究[J];建筑結構學報;2011年09期

7 蔡克銓,黃彥智,翁崇興;雙管式挫屈束制(屈曲約束)支撐之耐震行為與應用[J];建筑鋼結構進展;2005年03期

8 李國強;孫飛飛;陳素文;郭小康;胡寶琳;劉猛;王文濤;溫東輝;宋鳳明;劉自成;;大噸位國產(chǎn)TJⅡ型屈曲約束支撐的研制與試驗研究[J];建筑鋼結構進展;2009年04期

9 高景莘,余濤;正確運用均勻設計法和正交設計法[J];基層中藥雜志;2002年05期

10 周穎;呂西林;;搖擺結構及自復位結構研究綜述[J];建筑結構學報;2011年09期

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