【摘要】 为了分析高耸塔式结构在复杂荷载条件下的受力性能及稳定性,设计了一个总高度为800 mm,总体质量为61.2 g的竹材桁架结构模型。通过有限元软件Midas建立数值分析模型,对设计模型进行了强度、刚度以及稳定性分析。结果表明,模型结构最大应力出现在底部受压杆,最大压应力和拉应力均在材料强度容许范围之内,结构满足设计要求。将制作好的高耸塔式桁架结构模型进行振动台试验,分析其在包含水平振动等多种荷载复杂工况下的受力性能。结果表明:该桁架结构能够稳定通过实际工况下荷载的加载,没有发生破坏和倒塌。更多还原

【Abstract】 A truss structure model with a total height of 800 mm and an overall mass of about 61.2 g was designed to study the mechanical performance and stability of the high-rise tower structure under complex load conditions. The numerical analysis model was established with the finite element software Midas to analyze the strength, stiffness and stability of the model. The results showed that the maximum stress of the model structure occurred in the bottom compression bar, the maximum compressive stress and tensile stress were within the allowable range of material strength, and the structure was in accordance with the design requirements. The fabricated high-rise tower truss structure model was subjected to shaking table test to analyze its mechanical performance under complex horizontal vibration conditions. The results showed that the structure can be stabilized by loading under actual working conditions without damage and collapse.更多还原