本文關(guān)鍵詞：高層建筑消能減震結(jié)構(gòu)抗超大震性能分析與設(shè)計　出處：《大連理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 消能減震器 消能減震結(jié)構(gòu) 超大震不倒 性能設(shè)計

【摘要】：地震是一種危害性極大的自然災(zāi)害,由于其發(fā)生的隨機性和不確定性,往往會造成慘重的人員傷亡和巨大的經(jīng)濟損失。隨著社會發(fā)展和人們生活水平的提高,對高層建筑等重要性和城市功能保障性結(jié)構(gòu)的抗震性能要求也日益增高。然而按照傳統(tǒng)抗震設(shè)防準則“小震不壞,中震可修,大震不倒”設(shè)計的結(jié)構(gòu),會在大震發(fā)生后造成巨大的經(jīng)濟損失、難以使結(jié)構(gòu)在突發(fā)的超大震作用下不倒塌以及難以保證重要建筑和城市功能保障性建筑在大震中正常工作。消能減震結(jié)構(gòu)具有安全性、經(jīng)濟性和易實現(xiàn)更高的抗震性能等優(yōu)越性,為抗震結(jié)構(gòu)在可接受的經(jīng)濟水平內(nèi)實現(xiàn)結(jié)構(gòu)抗超大震的性能目標提供了可能。本文在傳統(tǒng)抗震設(shè)防準則的基礎(chǔ)上,提出了針對消能減震結(jié)構(gòu)的一種更高的設(shè)防準則“超大震不倒”,并對高層建筑消能減震結(jié)構(gòu)抗超大震性能進行了詳細分析,主要包括以下內(nèi)容和結(jié)論。(1)論述了結(jié)構(gòu)抗超大震性能實現(xiàn)的必要性和可行性,采用結(jié)構(gòu)設(shè)計軟件PKPM按照現(xiàn)行8度(0.20g)設(shè)防的要求設(shè)計了一座12層平面鋼筋混凝土框架結(jié)構(gòu),并在該框架結(jié)構(gòu)上分別布置粘滯消能器、摩擦消能器和防屈曲支撐,得到三個消能減震結(jié)構(gòu),應(yīng)用結(jié)構(gòu)非線性分析與性能評估軟件PERPORM3D對平面框架結(jié)構(gòu)和三個消能減震結(jié)構(gòu)分別進行8度小震、8度大震和9度大震作用下的時程分析,結(jié)果表明：小震作用下,摩擦消能器和防屈曲支撐均未起滑或屈服,而粘滯消能器能為主體結(jié)構(gòu)提供較大的附加阻尼；摩擦消能器無論在小震、大震和超大震作用下均能起到很好的減震效果；分別應(yīng)用了粘滯消能器、摩擦消能器和防屈曲支撐的三個消能減震結(jié)構(gòu)均能實現(xiàn)抗超大震性能,滿足“超大震不倒”的設(shè)防準則(性能目標)(2)選擇一座7度(0.10g)設(shè)防的20層鋼筋混凝土剪力墻結(jié)構(gòu),在該結(jié)構(gòu)第2-13層的相應(yīng)位置布置摩擦消能器,得到一個消能減震結(jié)構(gòu),對剪力墻結(jié)構(gòu)和消能減震結(jié)構(gòu)應(yīng)用結(jié)構(gòu)非線性分析與性能評估軟件PERFORM3D進行7度小震、7度大震和8度大震作用下的時程分析,結(jié)果表明：摩擦消能器能起到較好的控制效果；摩擦消能器能為主體結(jié)構(gòu)提供較大的附加阻尼比；避免消能減震結(jié)構(gòu)沒有布置消能器的樓層層間位移角比相應(yīng)原結(jié)構(gòu)的層間位移角大,消能器應(yīng)盡量在豎向每層都布置；布置摩擦消能器的消能減震結(jié)構(gòu)滿足“超大震不倒”的設(shè)防準則(性能目標)(3)采用結(jié)構(gòu)分析與設(shè)計軟件SAP2000按照現(xiàn)行8度(0.20g)設(shè)防的要求設(shè)計了一座48層巨型結(jié)構(gòu),并將此結(jié)構(gòu)的所有普通支撐分別用與其等剛度和等面積的防屈曲支撐代替,分別得到等剛度防屈曲支撐巨型結(jié)構(gòu)和等面積防屈曲支撐巨型結(jié)構(gòu),然后分別對巨型結(jié)構(gòu)和兩個防屈曲支撐結(jié)構(gòu)進行8度、8.5度和9度罕遇地震下的彈塑性時程分析。分析結(jié)果表明：在8度罕遇地震作用下,防屈曲支撐巨型結(jié)構(gòu)較普通支撐巨型結(jié)構(gòu)的最大層間位移角有明顯減小,且層間位移角變化更均勻；防屈曲支撐巨型結(jié)構(gòu)能達到“超大震不倒”的設(shè)防準則(性能目標),提高了結(jié)構(gòu)的安全儲備。
[Abstract]:The earthquake is a great danger of natural disasters, due to the randomness and uncertainty of its occurrence, often result in heavy casualties and huge economic losses. With the development of society and the improvement of people's living standard, also increased to high-rise building and the importance of city function security requirements. However, the seismic performance of structures according to the traditional seismic fortification criterion "no damage under small earthquakes, the earthquake can repair, the structure design of the earthquake does not fall, will cause huge economic losses in the earthquake occurred, it is difficult to make the structure collapsed in the large earthquake burst and it is difficult to guarantee the protection of important buildings and city function building in the earthquake in normal work. Energy dissipation structure is safe, economical and easy to realize the advantages of higher seismic performance, for seismic structure in the structure to achieve acceptable economic level of anti earthquake of large projects The subject may be provided. Based on the traditional seismic fortification criterion, proposes an energy dissipation structure and higher standards of "super fortification earthquake without collapse, and the high-rise building energy dissipation are analyzed in detail the anti shock performance of large damping structure, mainly includes the following contents and conclusions. (1) discusses the necessity and feasibility of the anti shock performance of the super structure, using structure design software PKPM according to the current 8 degree (0.20g) proof requirements to design a 12 floor reinforced concrete frame structure and the frame structure are distributed on the viscous damper, friction damper and BRB. Three energy dissipation structure, the plane frame structure and three energy dissipation were small earthquake 8 degrees application structure nonlinear analysis and performance evaluation of software PERPORM3D, 8 degree and 9 degree earthquake under strong earthquake time history analysis results table Ming: small earthquake, friction damper and BRB were not sliding or yield, while the viscous dampers can provide additional damping for large main structure; friction energy dissipation device in small earthquake, large earthquake and large earthquake can play a very good damping effect respectively; the application of viscous dampers, friction damper and BRB three energy dissipation structure can realize large anti shock performance, meet the criteria of large fortification earthquake without collapse "(performance) (2) a 7 degree (0.10g) fortification 20 layer reinforced concrete shear wall structure in the corresponding position, arrangement of the structure of the 2-13 layer of the friction energy dissipation device, an energy dissipation structure, the shear wall structure of energy dissipation and nonlinear damping structure application structure analysis and performance evaluation of PERFORM3D software for small earthquake of 7 degrees, 7 degrees and 8 degrees earthquake under strong earthquake time history analysis the results show that. That is very effective to eliminate friction; which can provide additional damping larger than for the main structure to avoid friction; energy dissipation structure without dissipation floors is arranged between the displacement angle than the corresponding original structure of the interlayer displacement angle is large, the energy dissipation in each layer should be vertical all friction damper layout layout; energy dissipation structure to meet the criteria for large fortification earthquake without collapse "(performance) (3) by structural analysis and design software SAP2000 according to the current 8 degree (0.20g) proof requirements to design a 48 layer of mega structure, and all the general support of this structure with its stiffness and buckling restrained brace instead of equal area, respectively, equivalent stiffness of buckling restrained brace mega structure and area of BRB mega structure, then the mega structure and two BRB structure was 8 degrees, 8.5 degrees and 9 degrees Under rareearthquake elastic-plastic time history analysis. The analysis results show that: in the rare earthquake of 8 degrees, BRB mega structure than the ordinary maximum support layer mega structure displacement angle is significantly reduced, and the interlayer displacement angle change is more uniform; BRB mega structure can achieve "fortification criterion large earthquake does not fall" (performance), improve the safety of structures.

【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TU973.31

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本文編號：1385716