本文選題：近斷層地震 + 水平-豎向相關(guān)性��； 參考：《武漢理工大學(xué)》2015年碩士論文

【摘要】：基礎(chǔ)隔震技術(shù)廣泛的應(yīng)用于當(dāng)今的建筑結(jié)構(gòu)的隔震減震設(shè)計(jì)中;有效的減輕結(jié)構(gòu)在地震作用下的反應(yīng)和破壞,顯著提高了建筑結(jié)構(gòu)的防震減災(zāi)能力。它是工程結(jié)構(gòu)被動(dòng)控制的主要形式之一,在基礎(chǔ)隔震技術(shù)發(fā)展的幾十年間,提出了應(yīng)用于各種隔震支座的力學(xué)模型。其中,最重要的是鉛芯橡膠支座的彈簧剛架力學(xué)模型。它可以模擬支座的幾何非線性和材料非線性兩種特征,是迄今為止較為成熟的力學(xué)模型。然而,隨著國(guó)內(nèi)外學(xué)者對(duì)于基礎(chǔ)隔震結(jié)構(gòu)地震響應(yīng)研究的深入,發(fā)現(xiàn)了一些問(wèn)題有待進(jìn)一步的探討研究。在此背景下,本文主要進(jìn)行了以下幾方面的研究:(1)本文利用前人提出的彈簧鋼架模型,結(jié)合上部結(jié)構(gòu)組成的多自由度運(yùn)動(dòng)體系,建立運(yùn)動(dòng)平衡方程;并且利用Newmark??法求解雙質(zhì)點(diǎn)多自由度動(dòng)力學(xué)運(yùn)動(dòng)方程。(2)水平--豎向相關(guān)性是本文的另一個(gè)重點(diǎn);通過(guò)控制鉛芯橡膠隔震支座的力學(xué)模型參數(shù)來(lái)控制水平--豎向相關(guān)性的影響水平。隔震結(jié)構(gòu)分為四種工況來(lái)計(jì)算基礎(chǔ)隔震結(jié)構(gòu)的地震響應(yīng),并作了相應(yīng)的對(duì)比分析工作。研究結(jié)果表明:當(dāng)在罕遇地震作用下,豎向相關(guān)性的影響更加明顯;尤其是在近斷層罕遇地震作用下尤為突出。(3)常規(guī)地震與近斷層地震動(dòng)的特征明顯不同,這種不同之處必然會(huì)通過(guò)地震加速度反應(yīng)時(shí)程曲線的加載來(lái)影響到隔震結(jié)構(gòu)的地震響應(yīng);并對(duì)不同類型地震作用下的地震響應(yīng)作了對(duì)比分析得出了一些重要的結(jié)論;數(shù)值分析結(jié)果表明:近斷層地震作用下隔震結(jié)構(gòu)的豎向加速度與豎向位移響應(yīng)將會(huì)明顯增大,并且考慮豎向相關(guān)性后還會(huì)明顯影響到水平位移和水平加速度的最大值。(4)本文中以八層剪切型結(jié)構(gòu)為研究對(duì)象,通過(guò)MATLAB編程求得了原結(jié)構(gòu)和隔震結(jié)構(gòu)在各種工況作用下的地震反應(yīng)。并且通過(guò)有限元分析軟件Sap2000進(jìn)行驗(yàn)證MATLAB程序計(jì)算結(jié)果的有效性。通過(guò)這些地震反應(yīng)的分析可知這對(duì)于以后修訂建筑抗震設(shè)計(jì)規(guī)范將給出有益的建議與要求。
[Abstract]:The technology of foundation isolation is widely used in the design of isolation and damping of building structures, which can effectively reduce the response and damage of structures under earthquake, and improve the ability of earthquake prevention and mitigation of building structures. It is one of the main forms of passive control in engineering structures. In the decades of the development of foundation isolation technology, the mechanical models applied to various isolation bearings are put forward. Among them, the most important is the mechanical model of spring frame of lead rubber bearing. It can be used to simulate the geometric nonlinearity and material nonlinearity of the bearing, and it is a mature mechanical model up to now. However, with the in-depth study of seismic response of base-isolated structures, some problems need to be further studied. In this context, this paper mainly studies the following aspects: 1) this paper uses the spring steel frame model proposed by the predecessors, combined with the upper structure of the motion system of multiple degrees of freedom to establish the motion balance equation, and use the Newmark? It is another important point in this paper to solve the dynamic equation of motion of double particle with multiple degrees of freedom. The horizontal vertical correlation is controlled by controlling the mechanical model parameters of the lead-core rubber isolation bearing. The isolated structure is divided into four working conditions to calculate the seismic response of the base isolated structure, and the corresponding comparative analysis work is done. The results show that the effect of vertical correlation is more obvious under rare earthquakes, especially in the case of rare earthquakes on near faults. The characteristics of conventional earthquakes are obviously different from those of near-fault ground earthquakes. This difference is bound to affect the seismic response of isolated structures by loading the time-history curve of seismic acceleration response, and some important conclusions are obtained by comparing and analyzing the seismic responses of different types of earthquakes. The results of numerical analysis show that the vertical acceleration and vertical displacement responses of isolated structures will increase obviously under the action of near-fault ground earthquakes. Considering the vertical correlation, the maximum value of horizontal displacement and horizontal acceleration will be significantly affected.) in this paper, the eight-story shear structure is taken as the research object. The seismic responses of the original structure and the isolated structure under various working conditions are obtained by MATLAB programming. The validity of the calculation results of the MATLAB program is verified by the finite element analysis software Sap2000. Through the analysis of these seismic responses, it can be seen that this will provide useful suggestions and requirements for revising the seismic design code of buildings in the future.
【學(xué)位授予單位】：武漢理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU352.12

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 洪俊青;包華;;近斷層水平-豎向地震作用下基礎(chǔ)隔震結(jié)構(gòu)的動(dòng)力響應(yīng)[J];工業(yè)建筑;2011年04期

2 于旭;宰金珉;王志華;;考慮SSI效應(yīng)的鉛芯橡膠支座隔震結(jié)構(gòu)體系振動(dòng)臺(tái)模型試驗(yàn)[J];南京航空航天大學(xué)學(xué)報(bào);2010年06期

3 黨育;霍凱成;;多層隔震結(jié)構(gòu)的豎向地震作用研究[J];地震工程與工程振動(dòng);2010年04期

4 何文福;霍達(dá);劉文光;滕海文;;高層隔震結(jié)構(gòu)振動(dòng)臺(tái)試驗(yàn)及數(shù)值分析[J];北京工業(yè)大學(xué)學(xué)報(bào);2010年03期

5 葉昆;李黎;;近斷層脈沖地震作用下偏心基礎(chǔ)隔震結(jié)構(gòu)的地震反應(yīng)研究[J];工程力學(xué);2009年07期

6 何文福;劉文光;張穎;付偉慶;霍達(dá);;高層隔震結(jié)構(gòu)地震反應(yīng)振動(dòng)臺(tái)試驗(yàn)分析[J];振動(dòng)與沖擊;2008年08期

7 劉文光;何文福;霍達(dá);付偉慶;;大高寬比隔震結(jié)構(gòu)雙向輸入振動(dòng)臺(tái)試驗(yàn)及數(shù)值分析[J];北京工業(yè)大學(xué)學(xué)報(bào);2007年06期

8 丁琳;付偉慶;呂孔才;張立鑫;;振動(dòng)臺(tái)模擬高層隔震結(jié)構(gòu)多維地震反應(yīng)的試驗(yàn)[J];沈陽(yáng)建筑大學(xué)學(xué)報(bào)(自然科學(xué)版);2007年03期

9 付偉慶;王煥定;劉文光;丁琳;;LRB隔震結(jié)構(gòu)模型振動(dòng)臺(tái)試驗(yàn)研究(2)[J];哈爾濱工業(yè)大學(xué)學(xué)報(bào);2007年04期

10 榮強(qiáng);程文p<;;橡膠-摩擦并聯(lián)隔震體系的彈塑性時(shí)程分析[J];工業(yè)建筑;2007年02期

相關(guān)博士學(xué)位論文 前2條

1 葉昆;近斷層脈沖型地震作用下LRB基礎(chǔ)隔震結(jié)構(gòu)地震響應(yīng)研究[D];華中科技大學(xué);2008年

2 劉文光;橡膠隔震支座力學(xué)性能及隔震結(jié)構(gòu)地震反應(yīng)分析研究[D];北京工業(yè)大學(xué);2003年

相關(guān)碩士學(xué)位論文 前1條

1 姜偉;近斷層脈沖型地震作用下復(fù)合隔震結(jié)構(gòu)的動(dòng)力分析[D];武漢理工大學(xué);2010年

，

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