- 摘 要
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（1 華北水利水電大學(xué)土木與交通學(xué)院， 鄭州 450045; 2 北京清城華筑建筑設(shè)計研究院， 北京 100083; 3 中國中元國際工程有限公司， 北京 100089; 4 國機集團(tuán)科學(xué)技術(shù)研究院有限公司, 北京 100080）
［摘要］以某城樓大跨度樓蓋為工程背景，開展了鋼-混凝土疊合板組合樓蓋振動舒適度評估研究。首先通過現(xiàn)場動力特性測試獲得的樓蓋結(jié)構(gòu)一階豎向動力特性，校核了建立的整體結(jié)構(gòu)精細(xì)化有限元模型，然后仿真分析得到了樓蓋受單人行走、多人行走以及單人跳躍等多種激勵的動力響應(yīng)，最后開展了樓蓋振動舒適度評價。結(jié)果表明：該新型樓蓋結(jié)構(gòu)豎向剛度整體較大，具有較好的振動舒適度；有限元建?？蓪⒒炷怜B合板等效為整體殼單元，根據(jù)剛度、質(zhì)量等效原則增加板厚來模擬裝飾面層，鋼梁和混凝土板的連接可按剛接處理。研究結(jié)果可為類似樓蓋振動舒適度評估與有限元精細(xì)化建模提供參考。
［關(guān)鍵詞］鋼-混凝土疊合板組合樓蓋； 振動舒適度； 精細(xì)化有限元模型； 現(xiàn)場實測； 動力特性
中圖分類號：TU311-3文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2021)02-0092-05
Study on vibration serviceability of a large-span steel-concrete composite floor in a city gate
WANG Zhihao1, WANG Jinpei1, XU Ke2, HU Mingyi3,4
(1 School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou 450045, China; 2 THCA Architectural Design & Consulting Institute, Beijing 100083, China; 3 China IPPR International Engineering Co. Ltd., Beijing 100089, China; 4 SINOMACH Academy of Science and Technology Co. Ltd., Beijing 100080, China)
Abstract:The vibration serviceability evaluation of a steel-concrete composite floor was carried out based on a large-span floor in a city gate. Firstly, the sophisticated finite element model of the whole structure was verified according to the first vertical dynamic mode of the floor structure, which was derived from a field measurement. Then, the dynamic response of the floor, which was motivated by single walking, multi-person walking and single jumping, was obtained by numerical analysis. Finally, vibration serviceability evaluation of the floor was carried out. The research conclusions are as follows. The new type floor structure has larger vertical whole stiffness and better vibration serviceability. The concrete composite slab can be equivalent to a whole slab element and the decorative surface can be simulated by increasing the thickness of the slab based on the equivalent principle of stiffness and mass for in the finite element simulation. Furthermore, the connection between the steel beam and the concrete slab can be seen as rigid joint in the finite element model. The results can be used as reference for vibration serviceability evaluation and sophisticated finite element modeling of the similar floor.
Keywords:steel-concrete composite beam and slab floor; vibration serviceability; sophisticated finite element model; field measurement; dynamic characteristics
*國家自然科學(xué)基金面上項目（51878274），國機集團(tuán)重大科技專項（SINOMAST-ZDZX-2017-05）。
作者簡介：汪志昊，博士，教授，博士生導(dǎo)師，Email: wangzhihao@ncwu.edu.cn;通信作者：胡明祎，博士，高級工程師，碩士生導(dǎo)師，Email: hmyi2000@126.com。
