论文部分内容阅读
本文浅析了一种不常见的构筑物:即核心主体为钢筋混凝土塔简、外伸悬挑钢支架的悬臂式竖塔。在结构设计规范中对这类结构的计算方法没有具体规定。由于它是一种组合结构,中心的混凝土塔筒刚度较大,因此在设计过程中很容易被简化:塔身和悬挑钢支架分开计算。本文依据一个通风竖塔工程实例,建立了考虑外挑钢支架的整体计算和支架与塔身分开计算的两种模型,依据相关规范计算了结构的凤荷载和地震作用效应,并进行了对比分析,探讨计算结果的不同点。最后得出初步结论:在塔筒高耸、外围钢支架出挑较大的情况下,应建立整体模型计算,其与分开的简化计算相比较,在抗顷覆、地基反力等验算中结果不同,并且建议在设计过程中用多种软件进行计算和比较,对每个工程的特殊情况进行具体分析。
This article analyzes an unusual structure: the core of the main body of the reinforced concrete tower Jane, overhang cantilevered steel cantilever tower. There are no specific rules for the calculation of such structures in the structural design code. Because of its modular structure, the center concrete tower has a high stiffness and is therefore easily simplified in design: The tower and cantilever steel brackets are calculated separately. Based on the example of a ventilation tower, two models considering the overall calculation of the steel support and the calculation of the separation between the support and the tower are established. The wind load and seismic effect of the structure are calculated according to the relevant codes, and the comparative analysis , Explore the difference between the calculated results. Finally, a preliminary conclusion is reached: in the case of towering tall tower and large outer steel bracket, the overall model calculation should be established. Compared with separate simplified calculation, It is also suggested to use a variety of software in the design process to calculate and compare the specific circumstances of each project for a specific analysis.