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（1 聊城大學(xué)建筑工程學(xué)院， 聊城 252000； 2 西安建筑科技大學(xué)土木工程學(xué)院， 西安 710055）
［摘要］以聊城光岳樓木結(jié)構(gòu)為研究對象，基于其實測動力特性參數(shù)，采用ANSYS軟件建立了上部木結(jié)構(gòu)-高臺基-地下市政管道及周圍土層整體有限元模型，模擬討論了不同車輛類型、不同車速、安全距離及車輛作用方式等多種工況下光岳樓木結(jié)構(gòu)的振動響應(yīng)；針對地面交通振源特點，提出了設(shè)置環(huán)形隔振溝作為減振措施，討論隔振溝位置、深度、寬度及填充材料對減振效果的影響。結(jié)果表明：環(huán)形隔振溝的位置、深度對減振效果影響較大，寬度影響較??；硬性填充材料比彈性材料更有利于減振。為減小地面車輛振動對光岳樓木結(jié)構(gòu)的影響，建議將環(huán)形隔振溝設(shè)置在距光岳樓中心點35m處，深度取6m、寬度取2m，且溝內(nèi)填充材料混凝土有利于減振。
［關(guān)鍵詞］光岳樓木結(jié)構(gòu)； 地面車輛荷載模擬； 環(huán)形隔振溝； 減振
中圖分類號：TU366文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2017)17-0076-06
Research on ground traffic excitation simulation and vibration isolation measures on timber structure of Guangyue Tower in Liaocheng
Meng Zhaobo1, Hu Bosen2, Hu Weibing2, Zhao Qingshuang1, Jin Jie1, Gu Xinqiang1
(1 School of Architecture ＆ Civil Engineering, Liaocheng University, Liaocheng 252000, China; 2 School of Engineering, Xi′an University of Architecture and Technology, Xi′an 710055， China)
Abstract:Taking timber structure of Guangyue Tower in Liaocheng as the research object and based on its measured dynamic characteristic parameters， the overall finite element model of the upper timber structure-high pedestal-underground municipal pipes and surrounding soil was established by ANSYS software. The vibration response of timber structure of Guangyue Tower under different working conditions of various vehicle types, vehicle speeds, vehicle safety distances and the modes of vehicle action were discussed. According to the characteristics of ground traffic vibration, circular isolation trench was proposed to set as vibration isolation measures, and the influence of the isolation trench location, depth, the width and filling materials on the damping effect were discussed. The results show that the influence of location and depth of the circular isolation trench on the vibration reduction effect is large, while the effect of the width is less; the rigid filling material is more conducive to vibration reduction than the elastic material. In order to reduce the influence of vehicle vibration of ground traffic on timber structure of Guangyue Tower, it is suggested that the circular isolation trench is arranged 35m away from the center point of Guangyue Tower, with 6m in depth and 2m in width, and using concrete as the filling material for trench is conductive to vibration isolation.
Keywords:timber structure of Guangyue Tower; load simulation of ground traffic; circular isolation trench; vibration isolation
*國家自然科學(xué)基金項目(51378245)，陜西科技計劃項目(2013K13-02-08)，國家文物局項目（2013YBHT007），山東教育廳項目(J14LG53)，山東省研究生教育創(chuàng)新計劃項目（SDYY13084,SDYY16102)。
通訊作者：胡博森，碩士研究生，Email:1245419683@qq.com。
