江苏太仓广播电视发射塔的有限元分析  

Finite Element Analysis of Jiangsu Tai Cang Radio and Television Tower

作　　者：王谦[1] 田畾[1] 卢明奇[2] 夏大桥[1] 

机构地区：[1]中广电广播电影电视设计研究院,北京100045 [2]北京交通大学土木建筑工程学院,100044

出　　处：《特种结构》2010年第3期51-53,共3页Special Structures

摘　　要：江苏太仓塔工程结构复杂,造型新颖,建成后将成为太仓市的标志性建筑。在结构分析中,太仓塔工程存在一定的技术难点,主要表现在风荷载的计算、外塔架与内部井道的协同工作以及塔体结构的优化设计等方面。本文利用SAP2000有限元分析软件,建立整体空间有限元分析模型,对荷载作用下的结构反应进行内力分析。其中,风荷载采用《钢塔桅结构设计规范》建议的方法,考虑了脉动风对结构高阶振型的影响作用。通过对计算结果分析可以看出:外塔架与内部井道结构沿水平面呈大致相同的水平位移分布形式,说明井道与外塔架之间的连杆连接,能够保证二者的变形协调和共同工作。本文还在保证结构安全储备的前提下,对塔体结构进行了优化设计,确定了合理的杆件截面。Tai Cang Tower in Jiangsu Province has a complex structure and original sculpt, it will be the symbol of the city when it is built. But there were some difficulties in the structure analysis of the tower. They were mainly the estimation of wind effects, the interaction between the outer tower structure and the inner shaft and the optimum design of the tower. In the paper, based on the finite element analysis software SAP2000, a 3 D finite element model was proposed to analyze the inner forces of the structure under different load. The method that was suggested in the Code for Structure Design of Steel Tower and Mast was adopted to consider the effects of the dynamic wind on high modes of the tower. From the calculating results, it can be seen that the horizontal displacements of the outer tower structure and the inner shaft were similar. This means that the connecting rods between the outer tower structure and the inner shaft may keep the same displacement of the two parts compatibly. Urwler the premise that the structure were remained safe, the optimum design were conducted and the reasonable member sections were suggested in the paper.

关 键 词：有限元分析 风荷载 优化设计 塔体 

分 类 号：TU347[建筑科学—结构工程]