• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

ELECTRIC POWER CONSTRUCTION ›› 2015, Vol. 36 ›› Issue (5): 84-90.doi: 10.3969/j.issn.1000-7229.2015.05.014

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Integrated Design of Transmission Tower-TMD Damping System

ZHANG Peng1, LI Hongnan1, SONG Gangbing1,2, ZHANG Zhuoqun3   

  1. 1. Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, Liaoning Province, China;2.  University of Houston, Texas 77081, USA; 3. State Nuclear Electric Power Planning Design & Research Institute, Beijing 100095, China
  • Online:2015-05-01

Abstract:

A tuned mass damper (TMD) is often used to reduce the seismic response of transmission tower, which is designed based on the previously designed tower, so the influence of TMD on the structural dynamic characteristics is often neglected. This paper proposed an integrated design method for the transmission tower-TMD system, which selected the H∞ norm of system transfer function as the optimization objective, and used Genetic algorithm (GA) to optimize the section of angle steel. The multi-degree-freedom model was adapted to simulate tower structure to simplify the calculation of its H∞ norm. In order that the optimized structure satisfied the static loads and the total mass was not increased, the penalty function was also introduced to adjust the GA fitness. Taking the structure of a practical tower as example, the optimization calculation result shows that the proposed integrated design can further reduce the seismic response of transmission tower, with the static load case satisfied and the same total mass. This method avoids calculating the time domain response, and thus has high computation efficiency.

Key words: transmission tower, H∞ norm, genetic algorithm, seismic response, section optimization, tuned mass damper(TMD), integrated design

CLC Number: