884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

（1 西安理工大學(xué)土木建筑工程學(xué)院， 西安 710048； 2 陜西省建筑科學(xué)研究院， 西安 710082； 3 陜西省文物保護(hù)研究院， 西安 710075）

［摘要］基師塔位于陜西省西安市興教寺內(nèi)，是“絲綢之路”起點(diǎn)世界文化遺產(chǎn)建筑之一。為了研究基師塔的動(dòng)力特性及損傷狀況，為其抗震保護(hù)及加固修復(fù)提供科學(xué)依據(jù)，應(yīng)用超低頻動(dòng)力測(cè)試系統(tǒng)對(duì)該塔進(jìn)行了原位動(dòng)力測(cè)試試驗(yàn)，采集了在地面脈動(dòng)作用下古塔結(jié)構(gòu)振動(dòng)的速度及位移信號(hào)，對(duì)速度信號(hào)進(jìn)行自譜分析，得到了基師塔的振動(dòng)頻率。應(yīng)用有限元軟件ANSYS建立了基師塔的數(shù)值計(jì)算模型，計(jì)算了古塔的動(dòng)力特性，將計(jì)算結(jié)果與測(cè)試結(jié)果進(jìn)行對(duì)比，評(píng)定了基師塔的結(jié)構(gòu)損傷。結(jié)果表明，基師塔沿東西方向與南北方向第1階振動(dòng)頻率較為接近，塔底底層開(kāi)洞對(duì)其振動(dòng)頻率略有影響，宏觀損傷較為嚴(yán)重，宜做進(jìn)一步的損傷測(cè)試與分析。

［關(guān)鍵詞］磚石古塔； 動(dòng)力測(cè)試； 動(dòng)力特性； 結(jié)構(gòu)損傷

中圖分類號(hào)：TU311-3文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2017)21-0105-04

Dynamic characteristic test analysis of Jishi Pagoda of Xingjiao Temple

Lu Junlong1, Si Jianhui1, Tian Penggang2, Zhang Wei3

(1 School of Civil Engineering and Architecture, Xi′an University of Technology, Xi′an 710048, China; 2 Institute of Building Science of Shaanxi Province, Xi′an 710082, China; 3 Shaanxi Provincial Institute of Cultural Relics Protection, Xi′an 710075, China)

Abstract:Located in Xingjiao Temple in Xi′an, Shanxi Province in China, Jishi Pagoda is one of the world cultural heritage architecture of the start point of the Silk Road. In order to study the dynamic characteristics and damage state of the pagoda to provide a scientific basis for seismic protection and reinforcement, ultra-low frequency power test system was applied to in-situ dynamic test for the pagoda. The speed and displacement signals of pagoda vibration were obtained under the action of pulsating on the ground. The spectrum analysis was conducted on velocity signal to obtain the vibration frequency of Jishi Pagoda. Numerical calculation model of the pagoda was established using finite element software ANSYS, to calculate dynamical characteristics of pagoda. The calculation results and test results were compared to evaluate structural damage of the pagoda. The results show that the first-order vibration frequencies along the east-west direction and the north-south direction are closer, and the bottom hole of the pagoda has a slight impact on its vibration frequency, and the macro damage is more serious. It is appropriate to do further damage testing and analysis.

Keywords:masonry pagoda; dynamical test; dynamical character; structure damage

*國(guó)家自然科學(xué)基金資助項(xiàng)目（51308455），陜西省自然科學(xué)基礎(chǔ)研究計(jì)劃資助項(xiàng)目（2015JM5206），住房與城鄉(xiāng)建設(shè)部科技計(jì)劃項(xiàng)目（2014-K2-018）和陜西省博士后科學(xué)基金資助項(xiàng)目。

作者簡(jiǎn)介：盧俊龍，博士，副教授，碩士生導(dǎo)師，Email：lujunlong@sohu.com。