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(1 合肥工業(yè)大學(xué)土木與水利工程學(xué)院， 合肥 230009；2 安徽水利水電職業(yè)技術(shù)學(xué)院建筑工程學(xué)院， 合肥 231603)

［摘要］窄基角鋼輸電塔具有小根開、高柔度的特點(diǎn)，其與輸電線組成耦聯(lián)體系兼具了大跨度的特征，風(fēng)振效應(yīng)十分明顯。為更好地了解其風(fēng)振響應(yīng)特性并簡化其計(jì)算模型，利用ANSYS有限元軟件建立了直線型一塔兩線、三塔兩線兩種塔線體系模型，對(duì)其動(dòng)力特性和風(fēng)振響應(yīng)情況進(jìn)行了比較，并以此為基礎(chǔ)對(duì)不同布置形式下小轉(zhuǎn)角塔線體系的風(fēng)振響應(yīng)進(jìn)行了對(duì)比分析。研究結(jié)果表明，一塔兩線模型具有足夠的計(jì)算精度，可以作為簡化的計(jì)算模型應(yīng)用于實(shí)際工程。對(duì)具有小轉(zhuǎn)角的塔線體系而言，布置形式對(duì)其風(fēng)荷載作用下結(jié)構(gòu)的穩(wěn)定性影響不大。

［關(guān)鍵詞］窄基角鋼輸電塔； 塔線體系； 轉(zhuǎn)角塔； 動(dòng)力特性； 風(fēng)荷載分配系數(shù)； 風(fēng)振響應(yīng)

中圖分類號(hào)：TU391文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2020)01-0130-05

Study on wind-induced  response of transmission tower with narrow base tower-line coupling system

Tan Jinlin1, Huang Wenfeng1, Zhang Yan2

(1 College of Civil Engineering, Hefei University of Technology, Hefei 230009, China；2 Architectural Engineering Institute, Anhui Water Conservancy Technical College, Hefei 231603, China)

Abstract:The root span of angle steel transmission tower with narrow base is small, and the tower has high flexibility. The tower-line coupling system has the long-span characteristics that result in the wind-induced response is very obvious. In order to understand the wind-induced response of the narrow base tower-line coupling system and simplify the calculation model simultaneously,  two kinds of tower-line  coupling system finite element models which were the one tower with two lines and the three towers with two lines were established by ANSYS. Both the dynamic characteristics of the tower-line coupling system and the wind-induced response were compared. On this basis, this study did a comparative analysis about the wind-induced response of the small-angle tower-line coupling system with different layouts forms. The results indicated that the one tower with two-line model has sufficient computational accuracy and it can be used as a simplified calculation model for practical engineering. For the tower-line coupling system with small rotation angle, the layout forms have little influence on the stability of the structure under wind load.

Keywords:transmission tower with narrow base; tower-line coupling system; steering tower; dynamic characteristics; partition coefficient of wind load; wind-induced response

*國家自然科學(xué)基金(51408174)，中國博士后科學(xué)基金（2015T80652），安徽高校自然科學(xué)研究重點(diǎn)項(xiàng)目（K2016A294）。

作者簡介：譚謹(jǐn)林，碩士，Email:514971311@qq.com。