【摘要】：近年來(lái)的震害表明，地震造成的人員傷亡有所減少，但經(jīng)濟(jì)損失卻越來(lái)越大�；谛阅艿目拐鹪O(shè)計(jì)成為抗震設(shè)計(jì)規(guī)范發(fā)展的方向。本文結(jié)合基于位移角的抗震評(píng)估理論，針對(duì)抗震分析方法中簡(jiǎn)便有效的能力譜法，進(jìn)行了以下研究工作： （1）利用SAP2000軟件對(duì)三個(gè)不同類型的結(jié)構(gòu)（框架、框剪、框筒），采用三種側(cè)向力加載模式（均布、倒三角、模態(tài)）進(jìn)行靜力彈塑性分析。以屈服位移的倍數(shù)量化結(jié)構(gòu)的不同彈塑性狀態(tài)，研究不同彈塑性狀態(tài)下結(jié)構(gòu)的變形、頂點(diǎn)位移角和最大位移角的變化情況。 （2）研究了結(jié)構(gòu)采用不同推覆方式獲得的層間位移延性系數(shù)及不同推覆狀態(tài)下的塑性角出現(xiàn)順序及位置。 （3）對(duì)不同結(jié)構(gòu)類型的自振周期經(jīng)驗(yàn)公式進(jìn)行分析，并與模態(tài)結(jié)果進(jìn)行對(duì)比；研究結(jié)構(gòu)在不同彈塑性狀態(tài)下的瞬態(tài)周期。 （4）對(duì)三個(gè)結(jié)構(gòu)模型進(jìn)行增量動(dòng)力分析，，得到多條地震記錄的基于IDA能力曲線，研究隨著地震強(qiáng)度的增大，結(jié)構(gòu)頂點(diǎn)位移角、最大層間位移角及變形曲線的變化規(guī)律；建立位移角和地震影響系數(shù)的關(guān)系曲線；進(jìn)行基于IDA與Pushover的結(jié)構(gòu)抗震能力比較。 （5）介紹不同烈度下結(jié)構(gòu)抗震評(píng)估新方法。將Sa-Sd曲線轉(zhuǎn)化成α-Sd曲線，然后通過(guò)不同烈度下的地震作用與α-Sd曲線比較，確定小震階段和大震階段在不同烈度下的性能交點(diǎn)，用頂點(diǎn)位移角和最大層間位移角評(píng)估結(jié)構(gòu)的抗震性能。
[Abstract]:The earthquake damage in recent years shows that the casualties caused by the earthquake have been reduced, but the economic losses are increasing. Performance-based seismic design has become the development direction of seismic design code. Based on the displacement angle based seismic assessment theory, the following research work is carried out in this paper: (1) three different types of structures (frame, frame shear, frame shear) are studied by using SAP2000 software, which is a simple and effective method for seismic analysis. Three lateral loading modes (uniform distribution, inverted triangle, mode) are used for static elastic-plastic analysis. The deformation of structures under different elastic-plastic states is studied by quantifying the different elastic-plastic states of structures with multiple yield displacements. (2) the order and position of the ductility coefficient of interstory displacement and the occurrence order of plastic angle under different nappe states are studied. (3) the empirical formula of natural vibration period of different structural types is analyzed. Compared with the modal results, the transient periods of structures under different elastic-plastic states are studied. (4) the incremental dynamic analysis of three structural models is carried out, and the multiple seismic records based on IDA capability curves are obtained. With the increase of earthquake intensity, the variation law of the displacement angle of the structure vertex, the maximum interstory displacement angle and the deformation curve are studied, and the relation curve between the displacement angle and the seismic influence coefficient is established. The seismic capacity of structures based on IDA and Pushover is compared. (5) A new method for seismic evaluation of structures with different intensity is introduced. The Sa-Sd curve is transformed into 偽-Sd curve, and then, by comparing the seismic action under different intensity and 偽-Sd curve, the performance intersection of small earthquake stage and large earthquake stage under different intensity is determined. The aseismic performance of the structure is evaluated by using the vertex displacement angle and the maximum interstory displacement angle.
【學(xué)位授予單位】：青島理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU352.11

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