本文選題：框架結(jié)構(gòu)　切入點(diǎn)：樓梯結(jié)構(gòu)　出處：《河北工程大學(xué)》2013年碩士論文

【摘要】：樓梯是十分重要的垂直交通通道。在地震作用下,樓梯的破壞比較嚴(yán)重,在一定程度上阻礙了人們的逃生。在汶川地震之前,在進(jìn)行結(jié)構(gòu)設(shè)計(jì)時(shí),沒有考慮樓梯對(duì)整體結(jié)構(gòu)的影響,對(duì)樓梯的設(shè)計(jì)也只是進(jìn)行簡(jiǎn)化處理,只考慮了豎向荷載,并沒有對(duì)樓梯進(jìn)行抗震計(jì)算,僅對(duì)其進(jìn)行構(gòu)造設(shè)計(jì)。 實(shí)際上,在結(jié)構(gòu)計(jì)算時(shí),考慮樓梯作用對(duì)結(jié)構(gòu)具有十分重要的影響。本文以框架結(jié)構(gòu)的教學(xué)樓為例,建立了有樓梯的模型和無樓梯的模型,嚴(yán)格根據(jù)建抗震筑設(shè)計(jì)規(guī)范的要求,通過PKPM軟件進(jìn)行分析,主要進(jìn)行以下工作： (1)對(duì)比分析樓梯參與整體結(jié)構(gòu)計(jì)算,對(duì)結(jié)構(gòu)的動(dòng)力特性的影響,即對(duì)結(jié)構(gòu)的基本運(yùn)動(dòng)形式、自振周期、結(jié)構(gòu)位移等的影響。 (2)在地震作用下,分析板式樓梯對(duì)結(jié)構(gòu)主要受力構(gòu)件的內(nèi)力影響。 通過本文的研究,得到以下結(jié)論：在框架結(jié)構(gòu)中,樓梯對(duì)整體結(jié)構(gòu)具有斜撐作用,增大了結(jié)構(gòu)的剛度,改變了結(jié)構(gòu)的剛度分布,縮短了結(jié)構(gòu)的自振周期,使得結(jié)構(gòu)的位移減小,層間剪力增大,同時(shí)使得樓梯間附近框架的受力構(gòu)件的內(nèi)力大幅度提高。
[Abstract]:Staircase is a very important vertical traffic passageway. Under the action of earthquake, the damage of staircase is quite serious, which to some extent hinders people's escape. Before the Wenchuan earthquake, before the Wenchuan earthquake, when carrying out the structural design, The influence of staircase on the whole structure is not considered, and the design of staircase is only simplified, only the vertical load is considered, and the seismic calculation of staircase is not carried out, but only the structural design is carried out. In fact, in the calculation of structure, it is very important to consider the effect of staircase on the structure. In this paper, taking the teaching building with frame structure as an example, the model with and without staircase is established. Strictly according to the requirements of the design code for seismic construction, through the analysis of PKPM software, the main work is as follows:. 1) the influence of staircase on the dynamic characteristics of the structure, that is, the basic motion form of the structure, the period of natural vibration and the displacement of the structure, is analyzed comparatively. 2) the influence of the plate staircase on the internal force of the main structural members under earthquake is analyzed. Through the research of this paper, the following conclusions are obtained: in the frame structure, the staircase has the function of oblique support to the whole structure, which increases the stiffness of the structure, changes the stiffness distribution of the structure, and shortens the natural vibration period of the structure. The displacement of the structure is reduced and the interstory shear force is increased, while the internal force of the frame members near the stairway is greatly increased.
【學(xué)位授予單位】：河北工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU311.3;TU229

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