排架支承式渡槽自振频率的简化计算方法  

Simplified calculating method for natural frequency of aqueduct structures with framed bent support

作　　者：刘福义 吴红华[2] 李正农[2] 

机构地区：[1]深圳市建筑设计总院第一设计院,广东深圳518031 [2]温州大学建筑与土木工程学院,温州325027

出　　处：《地震工程与工程振动》2003年第3期87-91,共5页Earthquake Engineering and Engineering Dynamics

基　　金：浙江省教委项目(200000651);温州市"551"工程项目

摘　　要：本文对于排架支承式渡槽自振频率的简化计算方法进行了研究,对于竖向力、柱和横梁的刚度的相对变化对结构自振频率的影响也进行了研究,从研究结果可发现随着竖向力的增加该结构的自振频率逐渐降低,柱和横梁的刚度的相对变化对于结构的自振频率有比较大的影响。本文的研究成果可为渡槽结构的设计计算提供了参考依据。In this paper, simplified calculating method for natural frequency of the aqueduct structure with framed bent support is established. The effects of the vertical force and change of the column stiffness and beam stiffness are researched. The results indicate that the natural frequency gradually decreases along with the increase of vertical force. The change of the column stiffness and beam stiffness greatly affects the change of structural natural frequency. Some suggestions on the design and construction of the aqueduct structure are put forward.

关 键 词：排架支承式渡槽 自振频率 竖向力 柱 横梁 刚度 水工建筑物 

分 类 号：TV672.3[水利工程—水利水电工程] P315.9[天文地球—地震学]