角钢通信塔抗震性能分析

Seismic Performance Analysis of Angle Steel Communication Tower

角钢通信塔广泛应用于通信基站建设,其抗震性能是结构分析的重要内容之一。为综合评价此类塔型的抗震性能,本文通过一系列高度的通信塔进行抗风与抗震分析,在中国地震动区划和基本风压表中筛选出抗震最不利与基本风压最小的地区,对此条件下的塔架进行多遇、设防及罕遇地震作用下结构分析,判定结构的抗震性能水准,基于性能化设计的原则确定角钢通信塔所能达到的抗震性能目标。分析结果表明,在满足抗风设计的条件下,角钢通信塔均可达到B级抗震性能目标,具有优良的抗震性能。

Angle steel communication tower are widely used in communication base station construction. The seismic performance of angle steel communication tower is one of the important contents of structure analysis.For comprehensive evaluation of the seismic performance of this type of tower, wind resistance and earthquake resistance were analyzed through a series of high communication towers in this paper. The areas with the greatest earthquake intensity and the lowest basic wind pressure were chosen to judge the seismic performance level of the structure under the action of frequent, fortification and rare earthquake. Based on the principle of performance-based design, the seismic performance target of angle steel communication tower can be determined. The analysis results showed that the angle steel communication tower can reach the seismic performance target of grade B and has excellent seismic performance on condition that the wind resistance design meet the requirement.