【摘要】：鋼交錯桁架結(jié)構(gòu)體系的研究近年來備受國內(nèi)外工程界以及學(xué)術(shù)界的關(guān)注,該體系采用的是平面桁架體系,抗側(cè)剛度好,自重輕,施工速度快,造價低且綠色環(huán)保。國內(nèi)外大部分的研究都是受力和傳力途徑及利用有限元分析和試驗分析進(jìn)行了橫向抗震性能和一些相關(guān)影響因素的研究,但是鋼交錯桁架結(jié)構(gòu)體系的縱向抗側(cè)剛度比其橫向抗側(cè)剛度小很多,這不利于該結(jié)構(gòu)體系的整體抗震能力,所以合理適當(dāng)?shù)目v向抗側(cè)剛度與橫向抗側(cè)剛度相比同等重要,是該結(jié)構(gòu)整體抗震的重要環(huán)節(jié)之一,然而國內(nèi)外對此所做的研究甚少。本文基于此問題,參考國內(nèi)外已有的相關(guān)規(guī)范及前人所做的研究成果,運用SAP2000有限元分析軟件,建立鋼交錯桁架結(jié)構(gòu)模型,在鋼交錯桁架結(jié)構(gòu)的縱向適當(dāng)?shù)牟贾们s束偏心支撐,增加縱向抗側(cè)剛度,用以增強(qiáng)結(jié)構(gòu)的整體抗震能力。本文采用SAP2000有限元分析軟件建立了交錯桁架結(jié)構(gòu)、縱向布置兩種不同偏心支撐形式的結(jié)構(gòu)及縱向布置屈曲約束偏心支撐的結(jié)構(gòu),對所建模型進(jìn)行模態(tài)分析,對比分析其基本動力特性;然后對原結(jié)構(gòu)、普通偏心支撐結(jié)構(gòu)及屈曲約束偏心支撐結(jié)構(gòu)進(jìn)行反應(yīng)譜分析及多遇地震下的時程分析,分析其地震反應(yīng)參數(shù);最后對普通偏心支撐結(jié)構(gòu)和屈曲約束偏心支撐結(jié)構(gòu)進(jìn)行罕遇地震下的時程分析,對比兩種結(jié)構(gòu)在罕遇地震作用下的地震反應(yīng)。經(jīng)過對比分析可知:合理的支撐布置方式對結(jié)構(gòu)剛度的提高更有效;在彈性階段,增加支撐后,結(jié)構(gòu)的剛度明顯增加,地震反應(yīng)也明顯減小,但是屈曲約束偏心支撐與耗能梁段尚未產(chǎn)生塑性變形,沒有發(fā)揮耗能作用,所以彈性階段的屈曲約束支撐與普通支撐無異,僅僅是為結(jié)構(gòu)提供抗側(cè)剛度;彈塑性階段,屈曲約束支撐與耗能梁段產(chǎn)生塑性變形,二者共同耗能保護(hù)主體結(jié)構(gòu)免遭破壞;對比各樓層的支撐軸力的最大值可以發(fā)現(xiàn),部分樓層的支撐尚處于彈性階段,若出于經(jīng)濟(jì)考慮,在滿足規(guī)范要求與安全的前提下,可以適當(dāng)?shù)臏p少支撐的布置數(shù)量或?qū)⑶s束支撐換為普通支撐。
[Abstract]:In recent years, the research of steel staggered truss structure system has attracted the attention of the engineering and academic circles at home and abroad. The system adopts plane truss system, which has good lateral stiffness, light weight, fast construction speed, low cost and green environmental protection. Most of the researches at home and abroad are made on the lateral seismic behavior and some related influencing factors by means of finite element analysis and experimental analysis. However, the longitudinal lateral stiffness of the steel staggered truss system is much smaller than that of the transverse lateral stiffness, which is not conducive to the overall seismic capacity of the structure, so the reasonable and appropriate longitudinal lateral stiffness is as important as the transverse lateral stiffness. It is one of the most important links in the whole earthquake resistance of the structure, but there are few researches on it at home and abroad. In this paper, based on this problem and referring to the existing codes and previous research results, the model of steel staggered truss structure is established by using SAP2000 finite element analysis software. In order to enhance the overall aseismic capacity of the steel staggered truss structure, the buckling restrained eccentric braces are arranged properly and the longitudinal lateral stiffness is increased. In this paper, SAP2000 finite element analysis software is used to establish staggered truss structure, two different eccentrically braced structures are arranged longitudinally and those with buckling constraint eccentrically braced are arranged. Modal analysis of the model is carried out. Comparative analysis of its basic dynamic characteristics; Then, the response spectrum of the original structure, the common eccentric bracing structure and the buckle-constrained eccentrically braced structure are analyzed, and the seismic response parameters are analyzed by the time-history analysis under the frequent earthquake. Finally, the time history analysis of ordinary eccentrically braced structures and buckle-constrained eccentrically supported structures under rare earthquakes is carried out to compare the seismic responses of the two structures under rare earthquakes. Through comparison and analysis, it can be seen that: reasonable support arrangement is more effective to improve the stiffness of the structure; In the elastic stage, the stiffness of the structure increases obviously and the seismic response decreases obviously when the bracing is increased, but the buckling restrained eccentrically braced beam and the energy-dissipation beam segment have not produced plastic deformation, and have not played the role of energy dissipation. So the buckling restrained braces in the elastic stage are no different from the common braces and only provide lateral stiffness for the structure. In the elastic-plastic stage, the buckling restrained bracing and the energy-dissipation beam segment produce plastic deformation, and both of them jointly consume energy to protect the main structure from destruction. Comparing with the maximum axial force of each floor, it can be found that the support of some floors is still in the elastic stage, if for economic reasons, under the premise of meeting the requirements and safety of the specification, The number of bracing arrangements can be reduced appropriately or buckling restrained braces can be replaced with ordinary braces.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TU352.11

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 郭彥林;王小安;江磊鑫;;裝配式防屈曲支撐構(gòu)件及框架設(shè)計理論[J];結(jié)構(gòu)工程師;2010年06期

2 冉紅東;蘇明周;胡天兵;申林;;循環(huán)荷載作用下混合式鋼交錯桁架結(jié)構(gòu)的滯回性能試驗研究[J];土木工程學(xué)報;2009年11期

3 李國強(qiáng);孫飛飛;宮海;胡大柱;;TJ型屈曲約束支撐工程應(yīng)用分析[J];建筑結(jié)構(gòu);2009年S1期

4 盧林楓;周緒紅;劉永健;莫濤;周期石;;交錯桁架結(jié)構(gòu)的設(shè)計[J];西安建筑科技大學(xué)學(xué)報(自然科學(xué)版);2007年03期

5 周緒紅;莫濤;劉永健;尹志明;盧林楓;周期石;;高層鋼結(jié)構(gòu)交錯桁架結(jié)構(gòu)的試驗研究[J];建筑結(jié)構(gòu)學(xué)報;2006年05期

6 馮敏治;余躍;;交錯桁架結(jié)構(gòu)體系介紹和應(yīng)用[J];廣州建筑;2006年01期

7 劉紅梁,劉志雄,陸欽年;交錯桁架體系結(jié)構(gòu)性能分析[J];哈爾濱工業(yè)大學(xué)學(xué)報;2004年09期

8 潘英,周緒紅;交錯桁架體系的抗震性能動力分析[J];土木工程學(xué)報;2002年04期

9 莫濤,周緒紅,劉永健,蔡益燕;交錯桁架結(jié)構(gòu)體系的受力性能分析[J];建筑結(jié)構(gòu)學(xué)報;2000年06期

10 周緒紅,莫濤,蔡益燕,魏潮文;新型交錯桁架結(jié)構(gòu)體系的應(yīng)用[J];鋼結(jié)構(gòu);2000年02期

相關(guān)會議論文 前1條

1 周緒紅;潘英;;順風(fēng)向脈動風(fēng)作用下高層交錯桁架結(jié)構(gòu)的動力反應(yīng)分析[A];第十一屆全國結(jié)構(gòu)工程學(xué)術(shù)會議論文集第Ⅰ卷[C];2002年

相關(guān)碩士學(xué)位論文 前4條

1 林浩泉;帶屈曲約束—偏心支撐的加層結(jié)構(gòu)抗震性能分析[D];青島理工大學(xué);2015年

2 周敏杰;框支交錯桁架結(jié)構(gòu)地震響應(yīng)分析[D];中南大學(xué);2011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 彭珊;鋼結(jié)構(gòu)交錯桁架體系的抗震性能研究[D];西安建筑科技大學(xué);2004年

，

本文編號：2358922