落地塔型设备横风向共振的塔径范围及内力分析  

Diameter Range of Tower-type Equipment Subjected to Resonance Induced by Transverse Wind and Its Internal Forces

作　　者：郝仕玲[1] 陈瑞金[2] 

机构地区：[1]中国农业大学水利与土木工程学院,北京100083 [2]中国石化工程建设公司,北京100101

出　　处：《石油工程建设》2006年第1期22-25,共4页Petroleum Engineering Construction

摘　　要：在落地塔型设备及其基础设计中,人们往往认为发生横风向共振的可能性小,没有考虑横风向风荷载。文章认为,多数落地塔型设备有发生横风向共振的可能性,并按不同地面粗糙度类别、不同基本风压、不同设备高度求出落地塔型设备出现跨临界强风共振的塔径范围,研究了基顶处横风向与顺风向内力比值随塔径变化情况,给出横风向与顺风向弯矩相等时对应的塔径、横风向与顺风向弯矩比最大值及其对应的塔径。It is often considered in tower-type equipment and its foundation design that the resonance of the tower in the direction perpendicular to wind is negligible. But this paper presents the possibility of that kind of resonance for majority tower-type equipment. The tower diameter range, in which the resonance of tower-type equipment in the direction perpendicular to wind occurs under critical strong wind, is determined acpording to the terrain roughness, the basic wind pressure and the height of the equipment. The relation of internal force ratio at the top of foundation vs. tower diameter in the cases of wind direction and perpendicular to wind direction is studied. The tower diameter range corresponding to equal bending moments induced by winds in those two directions as well as the tower diameter range corresponding to maximum bending moment ratio are provided.

关 键 词：塔型设备 横风向共振 风荷载 塔直径 塔内力 

分 类 号：TQ053.5[化学工程]