本文關(guān)鍵詞：館藏可移動(dòng)文物防震性能研究　出處：《北京交通大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 館藏可移動(dòng)文物 振動(dòng)臺(tái)試驗(yàn) 展柜 樓層動(dòng)力放大系數(shù)

【摘要】：我國(guó)是一個(gè)多地震的國(guó)家,每次地震對(duì)館藏可移動(dòng)文物的破壞極其嚴(yán)重,這一問(wèn)題受到國(guó)家相關(guān)部門(mén)的高度重視,《館藏可移動(dòng)文物防震規(guī)范》的編寫(xiě)被提上日程。對(duì)館藏可移動(dòng)文物防震性能研究提供科學(xué)的、簡(jiǎn)明實(shí)用的、安全量化的評(píng)價(jià)參數(shù)是此項(xiàng)研究的關(guān)鍵。實(shí)際上,對(duì)動(dòng)力放大系數(shù)和浮放滑移的研究具有重要的理論意義和工程應(yīng)用價(jià)值。本課題以博物館至文物這一振動(dòng)傳遞環(huán)節(jié)為主線,以理論計(jì)算、模型試驗(yàn)、有限元分析三者相結(jié)合為手段,對(duì)樓層動(dòng)力放大系數(shù)、展柜展臺(tái)面動(dòng)力放大系數(shù)、浮放滑移等關(guān)鍵問(wèn)題進(jìn)行研究。主要進(jìn)行了如下幾個(gè)方面內(nèi)容的研究： 1.針對(duì)振動(dòng)從博物館傳至樓地面第一環(huán)節(jié),首先確定樓層動(dòng)力放大系數(shù)的評(píng)價(jià)指標(biāo)；然后依據(jù)《博物館建筑設(shè)計(jì)規(guī)范》及現(xiàn)有博物館實(shí)際工程,考慮各種因素,建立多種計(jì)算模型,并依據(jù)相應(yīng)標(biāo)準(zhǔn)規(guī)范進(jìn)行結(jié)構(gòu)設(shè)計(jì),采用數(shù)理統(tǒng)計(jì)方法得到樓層動(dòng)力放大系數(shù)D1；最后研究不同結(jié)構(gòu)體系的動(dòng)力放大系數(shù)差異程度。 2.針對(duì)振動(dòng)從樓地面?zhèn)髦琳构竦诙h(huán)節(jié),通過(guò)展柜模型實(shí)驗(yàn)室試驗(yàn),得到在不同地震激勵(lì)作用下的固定展柜展臺(tái)面的動(dòng)力放大系數(shù)D2固和浮放展柜展臺(tái)面的動(dòng)力放大系數(shù)D2浮；并進(jìn)行規(guī)律總結(jié),為展柜模型數(shù)值模擬分析提供參考。 3.對(duì)固定展柜模型進(jìn)行有限元計(jì)算分析,通過(guò)改變展柜高寬比、重心高度重要參數(shù),得到不同地震激勵(lì)作用下的固定展柜展臺(tái)面的動(dòng)力放大系數(shù)D2固；并與模型試驗(yàn)結(jié)果進(jìn)行對(duì)比分析,確定固定展柜的動(dòng)力放大系數(shù)D2固的合理范圍,為實(shí)際工程設(shè)計(jì)提供參考。 4.對(duì)浮放展柜模型進(jìn)行有限元計(jì)算分析,通過(guò)改變展柜高寬比、重心高度和展柜與地面之間摩擦系數(shù)重要參數(shù),得到不同地震激勵(lì)作用下的浮放展柜展臺(tái)面的動(dòng)力放大D2�。徊⒎治鲞吔鐥l件對(duì)展柜展臺(tái)面放大系數(shù)的影響規(guī)律。 通過(guò)以上研究?jī)?nèi)容,本文可得出以下結(jié)論： 由樓層動(dòng)力放大系數(shù)研究可得,混凝土結(jié)構(gòu)建筑物的樓層動(dòng)力放大系數(shù)D1的范圍為1.00-3.15；鋼結(jié)構(gòu)建筑物樓層動(dòng)力放大系數(shù)D1的范圍為1.00-2.50。由展柜模型實(shí)驗(yàn)室試驗(yàn)可得,固定展柜展臺(tái)面動(dòng)力放大系數(shù)D2固的范圍為1.00-2.00；浮放展柜展臺(tái)面動(dòng)力放大系數(shù)D2浮的范圍為2.00以內(nèi)。由固定展柜有限元分析可得,固定展柜展臺(tái)面動(dòng)力放大系數(shù)D2固的范圍為1.00-2.42。由浮放展柜有限有分析可得,浮放展柜展臺(tái)面動(dòng)力放大系數(shù)D2浮的范圍為2.00以內(nèi)。
[Abstract]:China is a multi earthquake country, each earthquake on the collection of movable cultural relics damage is very serious, this problem is highly valued by the relevant departments of the state, "collection of cultural relics of earthquake specification writing was put on the agenda. The collection of cultural relics and shockproof performance, simple and practical that is the key to security quantitative evaluation parameters of the study. In fact, it has important theoretical significance and engineering application value to study the dynamic amplification coefficient and floating slip. The museum to cultural relics the vibration transmission link as the main line, to test the theoretical calculation, finite element analysis model, the combination of the three is means of floor dynamic magnification factor table dynamic magnification factor Showcase exhibition, researches the key issues of floating slip. The research mainly includes the following several aspects:
1. according to the vibration from the floor to the Museum of the first part, firstly, determining the evaluation index of floor dynamic magnification factor; then based on the design specifications and the existing museum museum building < > the actual project, considering various factors, the establishment of a variety of models, and according to the corresponding standard Specification for structural design, using the method of mathematical statistics to get the floor dynamic amplification factor D1; finally, study on the dynamic magnification factor of different structure differences.
2. according to the vibration from the ground floor to showcase the second link, the showcase model experiment in the laboratory, power obtained under different earthquake excitations under fixed surface magnification D2 exhibition showcase Showcase exhibition and solid floating table amplification coefficient of D2 floating; and sum up the law, provide reference for numerical simulation. The model analysis of Showcase
Finite element analysis of 3. models by changing the fixed showcase, showcase the aspect ratio, the height of the center of gravity of important parameters, dynamic different earthquake excitation fixed table magnification D2 Showcase exhibition solid; and compared with the results of model test, determine the dynamic amplification coefficient of fixed showcase a reasonable range of D2 solid, provide the reference for the engineering design.
4. of the floating showcase model to analyze the finite element calculation, by changing the display aspect ratio, friction coefficient between the important parameters and the height of the center of gravity and showcase ground, get different seismic excitations of floating mesa D2 floating exhibition showcase amplification; and to analyze the impact of boundary conditions on the amplification coefficient of exhibition cabinet table exhibition.
Through the above research content, this paper can draw the following conclusions:
By the floor dynamic magnification factor study, the scope of building concrete structure floor dynamic amplification factor D1 is 1.00-3.15; the range of steel structure building floor dynamic amplification coefficient D1 of the 1.00-2.50. model by laboratory tests to showcase, Showcase exhibition table dynamic range of fixed magnification coefficient of D2 solid is 1.00-2.00; range floating Showcase exhibition table the dynamic magnification factor of D2 floating for less than 2. By the finite element analysis can be fixed showcase, Showcase exhibition table fixed power amplification coefficient D2 fixed range is 1.00-2.42. by floating showcase finite analysis, the range of floating exhibition showcase dynamic magnification factor table D2 floating is less than 2.

【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU894

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