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

（天津大學(xué)建筑工程學(xué)院 300072）
［提要］ 產(chǎn)生振動(dòng)的生產(chǎn)設(shè)備安放于鋼結(jié)構(gòu)廠房時(shí)，需考慮廠房在長(zhǎng)期振動(dòng)下的安全性。利用脈動(dòng)法對(duì)2個(gè)已建鋼結(jié)構(gòu)廠房的動(dòng)力特性、設(shè)備運(yùn)行時(shí)的振動(dòng)特性以及結(jié)構(gòu)的動(dòng)力反應(yīng)進(jìn)行了測(cè)試，并應(yīng)用等效靜力的方法將設(shè)備的振動(dòng)效應(yīng)近似等效為作用于結(jié)構(gòu)的靜力荷載，按照相關(guān)規(guī)范的規(guī)定對(duì)結(jié)構(gòu)進(jìn)行承載力復(fù)核計(jì)算，評(píng)價(jià)結(jié)構(gòu)的安全性。結(jié)果表明，該方法切實(shí)可行，且經(jīng)濟(jì)方便。
［關(guān)鍵詞］ 鋼結(jié)構(gòu) 設(shè)備振動(dòng) 測(cè)試 動(dòng)力特性 承載力
Analysis of Longtime Equipment Vibration Influence on the Bearing Capacity of Steel Structural Factory Building/Ding Yang, Shen Bin（School of Civil Engineering, Tianjin University, Tianjin 300072,China）
Abstract:The equipments placed on the floor or ground of the steel structural factory building produce vibration loads and have bad influence on the safety of the building, especially for those designed with no vibration consideration. Therefore, the safety assessment and analysis of steel structure factory under longtime vibration loads are necessary.The pulsating method is employed in the testing of the dynamic characteristic, the vibration p
erformance of operating equipment and the dynamic response of two existed steel structure. The vibration is approximated to the static loads applied on the st
ructure using equivalent static method. At last, the bearing capacity is rechecked according to the related codes in order to evaluate the safety of the structure. The result shows that
 the represented method has great applicability and economical efficiency.
Keywords:steel structure; equipment vibration; testing; dynamic characteristic; bearing c
apacity