Estimation and mapping of extreme wind speeds in southeast coastal region of China
Fang Genshen1,2 Weichiang Pang2 Zhao Lin1,3 Cao Shuyang1,3 Ge Yaojun1,3
1. State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China;
2. Clemson University, Clemson, SC 29634, USA; 3. Key Laboratory of Transport Industry of Bridge Wind Resistance Technologies, Tongji University, Shanghai 200092, China
Abstract：The coastal region of China is one of the global areas which are the most vulnerable to typhoon hazards. It is of great importance to estimate the typhoon extreme wind speed for facilitating the wind-resistant design of civil engineering structures, prevent and mitigate the typhoon-induced hazards, and assess the typhoon-related risks in coastal regions. The typhoon extreme wind loading is not suggested independently in the current design code of China. A geographically-weighted-regression-based typhoon simulation approach is developed here in terms of the tracking, intensity and wind field parameter models. The local track and full track stochastic modeling are performed in the northwestern Pacific Ocean region, based on the best track dataset from 1951-2015 provided by the Japan Meteorological Agency. The typhoon extreme wind speeds at different sites are estimated with the help of a 3D typhoon boundary layer wind field model. The extreme wind speed in coastal region of China is firstly and comprehensively mapped before further discussing the spatial distribution characteristics of typhoon wind hazard in this region. Towards different design requirements of building structures, a dataset including the wind hazard curves and vertical profiles of extreme wind speed is archived, providing the input of extreme wind loading to facilitate the typhoon-resistant design of building structures located in the coastal region. This study enables a forward step towards the theoretical framework of wind-resistant design in China from conventional normal winds to typhoon.
方根深 Weichiang Pang 赵林 曹曙阳 葛耀君. 我国东南沿海台风极值风速预测与区划图构建[J]. 土木工程学报, 2021, 54(7): 43-53.
Fang Genshen Weichiang Pang Zhao Lin Cao Shuyang Ge Yaojun. Estimation and mapping of extreme wind speeds in southeast coastal region of China. 土木工程学报, 2021, 54(7): 43-53.
