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    趙作周¹，管  樺¹，潘 鵬¹，胡  曉²，張艷紅²
    (1 清華大學(xué)土木工程系清華大學(xué)結(jié)構(gòu)工程與振動(dòng)教育部重點(diǎn)實(shí)驗(yàn)室，北京100084; 2 中國(guó)水利水電科學(xué)研究院工程抗震研究中心，北京100040)

[摘要] 本文介紹某大型升船機(jī)結(jié)構(gòu)振動(dòng)臺(tái)試驗(yàn)?zāi)Ｐ驮谀Ｐ筒牧线x取、動(dòng)力相似關(guān)系確定以及試驗(yàn)方案設(shè)計(jì)方面的解決辦法。針對(duì)該升船機(jī)塔柱縱立面開(kāi)洞少、沿高度樓板少，擺放附加配重的困難，提出了局部增加樓板或減少樓板的解決方法，并利用SAP2000軟件對(duì)簡(jiǎn)化試驗(yàn)?zāi)Ｐ瓦M(jìn)行了計(jì)算分析，計(jì)算結(jié)果表明模型中樓板的簡(jiǎn)化處理對(duì)整體結(jié)構(gòu)自振特性和地震反應(yīng)影響很小，簡(jiǎn)化方法是可行性，但是，外縱墻預(yù)留洞口必須修補(bǔ)，才能更好模擬原型的動(dòng)力特性。本文提供的試驗(yàn)設(shè)計(jì)思路對(duì)今后相關(guān)的試驗(yàn)工作有一定的借鑒作用。
[關(guān)鍵詞] 振動(dòng)臺(tái)試驗(yàn)；相似關(guān)系；模型設(shè)計(jì)；升船機(jī)

Design of a large ship lift tower structural model for shaking table test
Zhao Zuozhou¹, Guan Hua¹, Pan Peng¹, Hu Xiao², Zhang Yanhong²
(1 Key Laboratory of Structural Engineering and Vibration of China Education Muustry, Department of Civil Engineering, Tsinghua University, Beijing 100084, China; 2 Engineering Seismic Research Center, China Institute of Water Resources and Hydropower Research, Beijing 100043, China)

Abstract: The structural system characteristics, model material selection, similitude-scaling relationship and design of the structural model of a large ship lift tower are illustrated in this paper. Due to fewer holes on the longitudinal elevations of the ship lift tower and limit floor areas in the ship lift tower along height, it is difficult to place all additional masses onto the available floors. In order to solve this difficulty, some additional floors along the structural height were added at certain level. However, within the staircases each alternative floor was omitted for model construction. SAP2000 was used to analyze the simplified test model and the results demonstrate that the dynamic characteristics and seismic responses of simplified model are approximate to those of prototype structure. The conclusion is that the proposed method is feasible in the test. The method applied in model will be helpful to other experimental studies.
Keywords: shaking table test; similitude-scaling relationship; model design; ship lift tower