發(fā)布時間：2018-04-24 11:23

  本文選題：軟鋼阻尼器 + 屈曲約束支撐��； 參考：《北京交通大學(xué)》2013年碩士論文

【摘要】：隨著耗能減震結(jié)構(gòu)在我國得到越來越多的重視,作為消能減震裝置的軟鋼阻尼器由于其穩(wěn)定的承載能力,良好的耗能性能等優(yōu)點在我國得到廣泛應(yīng)用。本文研究的軟鋼阻尼器主要指屈曲約束支撐和開孔式加勁阻尼器。 目前關(guān)于屈曲約束支撐的理論多出自于特定情形下的往復(fù)加載試驗、采用線性隨動強化模型的有限元分析和相關(guān)理論分析；而關(guān)于開孔式加勁阻尼器的理論則出自于極少數(shù)的幾個實驗和基于理想情形下的理論分析。本文即是關(guān)于這兩種軟鋼阻尼器在有限元分析和理論分析上的進(jìn)一步完善。 本文主要研究內(nèi)容如下： (1)對屈曲約束支撐的合理構(gòu)成進(jìn)行了理論分析,研究了約束比、初始缺陷、外套筒彈性模量、連接段寬厚比、厚度向和寬度向間隙對其整體穩(wěn)定性、局部穩(wěn)定性和滯回性能等的影響。并通過一組屈曲約束支撐試驗,初步驗證了理論分析的正確性。 (2)將采用線性隨動強化模型、混合強化模型的有限元結(jié)果與試驗結(jié)果對比：混合強化模型能實現(xiàn)有限元結(jié)果與試驗結(jié)果的完美近似。對影響其滯回性能的相關(guān)因素(約束比、間隙、摩擦系數(shù)、集中因子等)做基于混合強化模型的有限元參數(shù)分析,得出了一些具有重要意義的結(jié)論。 (3)對一組試驗情形下的開孔式加勁阻尼器做有限元模擬：混合強化模型依然是實現(xiàn)有限元結(jié)果與試驗結(jié)果完美近似的最佳選擇。用同一個有限元模型做工程情形下的分析發(fā)現(xiàn),開孔式加勁阻尼器的端部連接條件對其滯回性能的影響很大：兩端固定情形下,阻尼器在水平變形較大時存在軸向拉壓破壞效應(yīng)。一端固定,一端豎向位移釋放情形下,阻尼器具有穩(wěn)定的承載能力和良好的耗能能力。 (4)結(jié)合有限元分析成果,對工程情形下的開孔式加勁阻尼器做深層次的理論分析,得到了不同邊界情形下的阻尼器力學(xué)性能(屈服力、屈服位移等)與其尺寸、材料參數(shù)間的關(guān)系。通過另一組菱形開孔式加勁阻尼器試驗及有限元模擬分析,對前節(jié)理論分析的準(zhǔn)確性和合理性進(jìn)行了充分驗證。
[Abstract]:With more and more attention being paid to the energy dissipation structure in China, the soft steel damper, which is used as an energy dissipation device, has been widely used in China because of its stable bearing capacity and good energy dissipation performance. The soft steel dampers studied in this paper mainly refer to buckling restrained braces and open-hole stiffening dampers. At present, most of the theories about buckling restrained braces are derived from reciprocating loading tests under specific conditions. The finite element analysis and related theoretical analysis of the linear follow-up strengthening model are adopted. The theory of open-hole stiffener is derived from a few experiments and theoretical analysis under ideal conditions. This paper is about the further improvement of finite element analysis and theoretical analysis of these two kinds of mild steel dampers. The main contents of this paper are as follows: In this paper, the rational composition of buckling restrained braces is analyzed theoretically, and the stability of buckling braces is studied, including the constraint ratio, initial defect, elastic modulus of outer sleeve, width to thickness ratio, thickness and width clearance. Effects of local stability and hysteretic properties. Through a group of buckling constraint bracing tests, the correctness of the theoretical analysis is preliminarily verified. The finite element results of the mixed strengthening model are compared with the experimental results: the hybrid strengthening model can achieve the perfect approximation between the finite element results and the experimental results. Based on the finite element analysis based on the mixed strengthening model, some important conclusions are obtained by analyzing the relevant factors (constraint ratio, clearance, friction coefficient, concentration factor, etc.) that affect its hysteretic performance. 3) finite element simulation of a group of open-hole stiffening dampers: the hybrid strengthening model is still the best choice to achieve the perfect approximation between the finite element results and the experimental results. By using the same finite element model for engineering analysis, it is found that the end connection condition of the open-hole stiffening damper has a great influence on its hysteretic performance: in the case of fixed ends, When the horizontal deformation of the damper is large, the axial tension and compression failure effect exists. In the case of fixed one end and vertical displacement release at one end, the damper has stable bearing capacity and good energy dissipation capacity. (4) combined with the results of finite element analysis, the mechanical properties (yield force, yield displacement, etc.) and the size of the dampers under different boundary conditions are obtained by deep theoretical analysis of the open-hole stiffening dampers under engineering conditions. The relationship between material parameters. The accuracy and rationality of the theoretical analysis of the front section are fully verified by another set of rhombic open-hole stiffening dampers and finite element simulation analysis.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU352.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 沈國慶;陳宏;王元清;石永久;;無粘結(jié)鋼支撐非線性有限元分析[J];四川建筑科學(xué)研究;2007年05期

2 邢書濤,郭迅;一種新型軟鋼阻尼器力學(xué)性能和減震效果的研究[J];地震工程與工程振動;2003年06期

3 李國強;胡寶琳;;屈曲約束支撐滯回曲線模型和剛度方程的建立[J];地震工程與工程振動;2007年02期

4 歐進(jìn)萍,吳斌;組合鋼板耗能器——一種新型耗能減震裝置[J];地震工程與工程振動;1997年01期

5 周云,劉季;加勁阻尼裝置在建筑抗震中的應(yīng)用[J];工程抗震;1997年01期

6 王秀麗;胡靜;;約束屈曲支撐在落地球形網(wǎng)殼中的減震效果分析[J];蘭州理工大學(xué)學(xué)報;2008年04期

7 羅樹青,鄧長根,�；瘧�;抑制屈曲支撐的穩(wěn)定研究[J];華東船舶工業(yè)學(xué)院學(xué)報(自然科學(xué)版);2005年03期

8 張文元;張敏政;李東偉;;新型加勁軟鋼阻尼器性能與試驗[J];哈爾濱工業(yè)大學(xué)學(xué)報;2008年12期

9 郭子雄;關(guān)于日本阪神地震震害現(xiàn)象的幾點討論[J];華僑大學(xué)學(xué)報(自然科學(xué)版);1996年02期

10 高向宇;杜海燕;張惠;梁峰;;國標(biāo)Q235熱軋鋼材防屈曲支撐抗震性能試驗研究[J];建筑結(jié)構(gòu);2008年03期

相關(guān)碩士學(xué)位論文 前4條

1 張曉萌;防屈曲支撐理論分析及試驗研究[D];天津大學(xué);2010年

2 邢書濤;新型軟鋼阻尼器及其在結(jié)構(gòu)控制中的應(yīng)用研究[D];中國地震局工程力學(xué)研究所;2003年

3 劉建彬;防屈曲支撐及防屈曲支撐鋼框架設(shè)計理論研究[D];清華大學(xué);2005年

4 徐崇恩;開孔式加勁阻尼器的消能減震性能研究[D];同濟(jì)大學(xué);2008年

，

本文編號：1796424