赵作周¹，管  桦¹，潘 鹏¹，胡  晓²，张艳红²
    (1 清华大学土木工程系清华大学结构工程与振动教育部重点实验室，北京100084; 2 中国水利水电科学研究院工程抗震研究中心，北京100040)

[摘要] 本文介绍某大型升船机结构振动台试验模型在模型材料选取、动力相似关系确定以及试验方案设计方面的解决办法。针对该升船机塔柱纵立面开洞少、沿高度楼板少，摆放附加配重的困难，提出了局部增加楼板或减少楼板的解决方法，并利用SAP2000软件对简化试验模型进行了计算分析，计算结果表明模型中楼板的简化处理对整体结构自振特性和地震反应影响很小，简化方法是可行性，但是，外纵墙预留洞口必须修补，才能更好模拟原型的动力特性。本文提供的试验设计思路对今后相关的试验工作有一定的借鉴作用。
[关键词] 振动台试验；相似关系；模型设计；升船机

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