工程可靠性与随机力学国际联合研究中心

2023年第10期（总第72期）学术报告

工程力学研究中心第19期报告

文远讲坛271期

报告主题

TOPIC

基于可靠性的设计与分项安全系数标定

Reliability-based design and calibration of partial safety factors

报告人

SPEAKER

Prof. John Sørensen

丹麦奥尔堡大学教授、国际结构安全性联合委员会 (JCSS) 前主席、高端外国专家

报告时间

TIME

2023年12月13日（周三）下午14:00-15:00

报告地点

VENUE

同济大学土木大楼 A804

主持人

CHAIR

彭勇波教授、陈建兵教授

报告内容

Abstract

  The increased importance on sustainability implies among others a large focus on development of the basis and tools for exploitation of contributions from rational application of reliability-based design and calibration of partial factors for civil engineering and renewable energy structures.  Offshore wind turbines are an example as a main contributor to renewable energy in more and more parts of the world.  Reliability is a key issue since costs to materials and operation & maintenance are significant contributors to the Levelized Cost Of Energy and these costs are highly dependent on the reliability of the components implying that it is important to focus on increasing the reliability as much as is economically reasonable.   The same aspects are important for civil engineering structures composed by structural systems such as offshore structures, buildings and bridges, but with different weights on the cost contributors and further life safety aspects are important.

   This paper describes some basic formulations, tools and examples for probabilistic design of wind turbines including the implementation in a new Technical Specification for probabilistic design of wind turbines, IEC TS 61400-9. The Eurocodes for design and assessment of buildings, bridges, towers, masts, … are currently being revised. This paper presents the reliability background for the basic load combinations and examples of reliability-based calibration of partial safety factors.

报告人简介

Speaker Bio

Dr. John Dalsgaard Sørensen is a professor at the Department of The Built Environment at Aalborg University, Denmark. He received his MSC. and Ph.D. in 1980 and 1984, respectively, from Aalborg University, and became a full professor there since 2006. Prof. Sørensen’s major research interests include structural reliability; risk analysis; structural dynamics; structural analysis; load modeling; offshore structures and wind energy. He has more than 400 publications. Now he serves as the member of Editorial Board of numerous international journals and is among others convenor of IEC 61400-1 (Wind turbines – design requirements), IEC 61400-6 (Towers and foundations), and IEC 61400-9 (Probabilistic design measures of wind turbines). 2011-2016 he was President of the Joint Committee of Structural Safety (JCSS). Since 2009 he has been member of TC250-SC10 (Eurocode EN1990 - Basis of structural and geotechnical design) and since 2019 member of the Ad-Hoc Group on Reliability background of the Eurocodes.