Collapse Simulations of Communication Tower Subjected to Wind Loads Using Dynamic Explicit Method
Publication: Journal of Performance of Constructed Facilities
Volume 34, Issue 3
Abstract
Given the premise that a communication tower is a vital infrastructure that may collapse when encountering a wind disaster, this paper focused on investigating the collapse mechanism and collapse fragility of a communication tower subjected to wind loads. In this paper, a finite-element (FE) model of a 60-m-tall communication tower that collapsed under wind loads was created in ABAQUS (version 6.10). The wind-induced response was studied considering member buckling, and the Tian-Ma-Qu material model was used. Based on the dynamic explicit method, collapse simulations of the tower were performed with different wind attack angles using the incremental dynamic analysis (IDA) method. Subsequently, the weak position and the collapse mechanism of the tower were summarized. The results indicated that the Tian-Ma-Qu material model was effective in simulating the collapse of communication towers; the buckling of the main members was the governing reason for the progressive collapse of the tower. Thus, the main members should be strengthened in the design. Furthermore, the collapse fragility analysis of the tower was investigated, and the influence of the wind attack angle was discussed. The results demonstrated that the wind attack angle had a significant impact on the collapse fragility curve and the ultimate capacity.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
This research was supported by the Young Scholars Program of Shandong University (Grant No. 2017WLJH33), the National Natural Science Foundation of China (Grant No. 51708089), the China Postdoctoral Science Foundation (Grant Nos. 2017M620101 and 2019T120207); and the Fundamental Research Funds for the Central Universities [Grant No. DUT19RC(4)021].
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Published In
Journal of Performance of Constructed Facilities
Volume 34 • Issue 3 • June 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Sep 5, 2018
Accepted: Nov 8, 2019
Published online: Mar 4, 2020
Published in print: Jun 1, 2020
Discussion open until: Aug 4, 2020
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