發(fā)布時間：2018-04-17 20:05

  本文選題：摩擦滑移擺 + 耐磨材料�。� 參考：《昆明理工大學(xué)》2017年碩士論文

【摘要】：摩擦滑移擺隔震支座(Fiction Pendulum Bearing)是一種具有廣泛應(yīng)用前景的隔震支座,該支座具有平面滑移隔震裝置對地震激勵頻率范圍低敏感性和高穩(wěn)定性等特性外,特有的圓弧滑動面使其具有自復(fù)位功能,無需設(shè)置阻尼向心機(jī)構(gòu),在實際應(yīng)用中更為簡便,增加了隔震裝置的可靠度。此種支座由于具有承載能力高、抗扭轉(zhuǎn)能力強(qiáng)、耐久性強(qiáng)等特點(diǎn),目前在橋梁上應(yīng)用較多,在國外已將此類支座應(yīng)用于建筑工程,但是國內(nèi)因為缺乏對該支座設(shè)計、檢測、應(yīng)用等一整套較為完備的技術(shù)標(biāo)準(zhǔn)和規(guī)范,因此該支座目前并沒有像橡膠支座一樣在國內(nèi)的建筑領(lǐng)域得到推廣和應(yīng)用,而本文依托采用摩擦滑移擺隔震的昆明某鋼框架試點(diǎn)工程,對摩擦滑移擺隔震支座的力學(xué)性能檢測方法及摩擦滑移擺隔震體系的設(shè)計、分析方法進(jìn)行了詳細(xì)的研究。摩擦滑移擺隔震支座的主體結(jié)構(gòu)由鋼材制成,其中摩擦面主要通過非金屬耐磨材料與不銹鋼進(jìn)行對磨,所用耐磨材料的承載能力和耐磨性能直接影響到摩擦滑移擺支座隔震效率的有效發(fā)揮,因此選取合適而可靠的耐磨材料極為關(guān)鍵,本文通過查閱大量的國內(nèi)外相關(guān)的技術(shù)規(guī)范,對耐磨材料的選擇給出了明確的參數(shù)指標(biāo),為摩擦滑移擺隔震支座的設(shè)計和耐磨材料的選擇提供參考依據(jù)。并且本文結(jié)合試點(diǎn)工程中成品支座使用的新型耐磨材料MTF與摩擦滑移擺支座使用的傳統(tǒng)耐磨材料PTFE進(jìn)行性能指標(biāo)的對比,驗證新型耐磨材料的可靠性。由于國內(nèi)對建筑上使用的摩擦滑移擺隔震支座缺乏相應(yīng)的檢測標(biāo)準(zhǔn),本文結(jié)合歐洲標(biāo)準(zhǔn)《EN15129》及美國公路和運(yùn)輸協(xié)會(AASHTOO)編制的《隔震設(shè)計手冊》以及國內(nèi)標(biāo)準(zhǔn)《GB/T 20688.1橡膠支座第一部分:隔震橡膠支座試驗方案》等,對成品支座的檢測給出相關(guān)的試驗方法,該套試驗方法,可獲得支座的豎向剛度、水平等效剛度、屈服前剛度、等效阻尼比、快摩擦系數(shù)、慢摩擦系數(shù)及速度相關(guān)性系數(shù)等,以上指標(biāo)可作為結(jié)構(gòu)設(shè)計時,定義支座屬性的參數(shù)依據(jù)。并且本文也結(jié)合試點(diǎn)工程,對實際工程中的成品支座進(jìn)行了相關(guān)性能檢測,得到了工程應(yīng)用中支座的性能參數(shù)。本文依托采用摩擦滑移擺隔震的昆明某鋼框架試點(diǎn)工程,對其上部結(jié)構(gòu)進(jìn)行隔震分析,以檢測得到的成品支座的性能參數(shù)作為定義支座屬性的指標(biāo),輸入SAP2000模型中,進(jìn)行設(shè)防地震、罕遇地震的時程分析,通過隔震計算分析和初步設(shè)計,將隔震結(jié)構(gòu)與非隔震結(jié)構(gòu)的層間剪力、層間位移角和頂層加速度進(jìn)行對比,結(jié)果表明,該結(jié)構(gòu)使用摩擦滑移擺隔震后上部結(jié)構(gòu)滿足試點(diǎn)工程建筑的各項抗震設(shè)計要求。同時,本文也提取出支座在各個地震工況下對應(yīng)的支座受到的最大剪力及軸力,水平位移,豎向提離位移及支座的滯回曲線,結(jié)果表明,在各個地震工況下,支座的水平滑移位移及豎向位移均小于支座的位移限值,同時,支座的最大面壓均小于支座的壓應(yīng)力限值,支座在保證安全性的同時,豎向承載能力以及水平滑移能力均得到了有效的發(fā)揮。
[Abstract]:The friction pendulum bearings (Fiction Pendulum Bearing) is a promising isolation bearing, the bearing has sliding device excitation frequency range and low sensitivity and high stability characteristics of the earthquake, a circular sliding surface which has the unique self reset function without setting the damping in the practical application of centripetal mechanism. In the more convenient, increase the reliability of isolation device. The support has high bearing capacity, anti torsion ability, strong durability and other characteristics, widely used in bridge at present, this kind of support in foreign countries has been applied in the construction, but because of the lack of domestic testing for the bearing design, application, etc. a set of relatively complete technical standards and norms, so the support currently does not like rubber bearings in the domestic construction field as popularized and applied, and the support by sliding friction Shift the pendulum of a steel frame of Kunming pilot project, the design of sliding friction pendulum bearing mechanical properties test method and sliding friction pendulum system, analysis method is studied in detail. The main structure of the friction pendulum bearings is made of steel, the friction surface mainly through non metal materials and stainless steel for grinding, with wear-resistant material bearing capacity and wear resistance directly affect the friction pendulum isolation efficiency effectively, so the selection of wear-resistant materials, suitable and reliable is the key, through access to a large number of domestic and foreign related technical specification, selection of wear-resistant materials parameters are clear indicators, provide a reference according to the design and wear resistant materials for sliding friction pendulum bearing the choice. And this combination of new wear-resistant material MTF used in product support pilot project Comparison of performance index and the friction pendulum bearings using the traditional wear resistant material PTFE, verify the reliability of new wear-resistant material. Due to internal friction pendulum bearings used in construction and lack of corresponding testing standard, according to the European standard and the United States highway and Transportation Association (AASHTOO) the isolation design manual > and < the standard , test given to product support, the test method can be obtained, bearing the vertical stiffness, equivalent horizontal stiffness, yield stiffness, equivalent damping ratio, high friction coefficient, friction coefficient and slow the speed of correlation coefficient, the above indexes can be used as design parameters, according to the definition of bearing property. And the paper combined with the pilot project, to support the engineering of the product Seat were related to performance testing, performance parameters of the bearing in engineering application. This paper based on the friction pendulum of a steel frame of Kunming pilot project for seismic isolation analysis of the upper part of the structure, product support to detect the performance parameters as the index definition support attribute, input SAP2000 model, for fortification the earthquake, earthquake time history analysis, through calculation and analysis of isolation and preliminary design, the isolated structure and the non isolated structure shear layer, interlayer displacement angle and top acceleration were compared, results show that the structure of sliding friction pendulum after upper structure meet the seismic design requirements for pilot project construction. At the same time in this paper, also extract the maximum shear force and axial force, bearing support in various seismic conditions corresponding to the horizontal displacement, vertical lift displacement and bearing hysteretic curve of the node The results show that in various seismic conditions, horizontal displacement and vertical displacement of the sliding bearing is less than the limit value of the support, at the same time, the maximum surface bearing pressure were less than the bearing pressure stress limit value, support in ensuring security at the same time, the vertical bearing capacity and horizontal sliding force can effectively play.

【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TU352.12

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本文編號：1765075

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