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（同濟(jì)大學(xué)土木工程學(xué)院建筑工程系， 上海 200092）
［摘要］近年來，預(yù)制混凝土雙T板樓蓋被越來越多地用于大跨度工業(yè)與民用建筑中。雙T板由于具有跨度大、自振頻率低、阻尼小等特點(diǎn)，在人致荷載（如行走、跳躍和跑動等）作用下可能產(chǎn)生振動舒適度問題。美國PCI規(guī)范（2010版）對于雙T板的振動舒適度有相應(yīng)的設(shè)計(jì)控制要求，而中國目前尚無具體的規(guī)定。為此，本文根據(jù)美國PCI規(guī)范的雙T板舒適度驗(yàn)算方法，對中國圖集09SG432-2中的雙T板動力特性進(jìn)行計(jì)算分析，校核其舒適度是否滿足要求，同時給出了綜合考慮撓度和舒適度要求時各板型的適用跨度。
［關(guān)鍵詞］預(yù)制結(jié)構(gòu)； 雙T板； 行人荷載； PCI規(guī)范方法； 振動舒適度
中圖分類號：TU378-8文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2018)07-0087-04
Vibration serviceability assessment of precast concrete double-T slabs based on PCI design handbook
Chen Jun, Zhao Chunbo, Zhao Yong
(Department of Structural Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China)
Abstract:In recent years, due to the ultimate pursuit of large architecture space and the application of lightweight high-strength construction materials and advanced structural system, precast double-T labs have been increasingly popular in public buildings like stations or stadia in China. Because of the natural frequencies of long-span precast concrete double-T slabs are relatively low, which may fall into the frequency range of pedestrian induced load (e.g. walking, jumping or running). Besides, long-span precast concrete double-T slabs are always characterized by their low damping. As a result, the vibration serviceability problem has become an important design issue. Current research of human induced vibration and control of such annoying vibration is far from success. There are no widely accepted understanding or design codes to configure dynamic behavior of such structures. According to the calculation method of the vibration serviceability from the PCI Design Handbook (2010), this paper has calculated the dynamic behavior of the double-T slabs in the Chinese atlas (09SG432-2), checked whether the vibration serviceability meet the requirements of the relevant norms of China or not, and gave some advice for how to avoid this problem.
Keywords:precast structure; double-T slab; walking load; PCI design handbook; vibration serviceability
作者簡介：陳雋，博士，教授，博士生導(dǎo)師，Email：cejchen@#edu.cn。
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