基于抗侧刚度的三面广告牌格构式立柱设计优化及缩尺模型试验  

Design Optimization and Scaled Model Tests of the Three Sides Billboard Lattice Column Basal on Lateral Stiffness

作　　者：李瑞鸽[1] 杨国立[1] 张恒[1] 姜雨芃 张宇[1] 王子川[1] 

机构地区：[1]台州学院建筑工程学院,台州318000

出　　处：《结构工程师》2015年第1期137-141,共5页Structural Engineers

摘　　要：高耸广告牌格构式立柱的风荷载和抗侧刚度是设计时要考虑的主要问题。分析了格构式立柱截面宽度与柱高的比值对柔度系数的影响、腹杆截面面积与格构式弦杆截面面积比值对柔度系数的影响、立柱截面形状对柔度系数的影响等。根据优化结果,选择了适合的格构式立柱,使结构在材料用量相同的情况下,空间抗侧刚度达到最大。最后制作了缩尺模型在一定风速下进行了荷载试验,试验结果表明,提出的方法是合理可行的,能够为同类型结构的设计提供参考。The wind loads and lateral stiffness of towering billboards lattice columns were major factors that should be considered in design.Several factors affecting the flexibility factor were analyzed in this paper,that is： the ratio of column cross-section width and height impact on the flexibility factor,area ratio of the web and chord cross-sectional impact on the flexibility factor,and the column cross-sectional shape impact on the flexibility coefficient and so on.A suitable lattice column was chosen based on the optimization results,stiffness was maximized by the same amount of structural material.Finally,a test by scaled model was done,the test results show that the proposed method is reasonable and feasible,and it can provide a reference for the same type of structural design.

关 键 词：广告牌 柔度系数 格构式立柱 试验 

分 类 号：TU391[建筑科学—结构工程]