[1] Univ Cent Lancashire, Dept Mech Engn, Preston PR1 2HE, Lancs, England
[2] Leibniz Univ Hannover, Inst Risk & Reliabil, D-31509 Hannover, Germany
[3] Univ Liverpool, Inst Risk & Uncertainty, Liverpool L69 3BX, Merseyside, England
[4] Tongji Univ, Shanghai Inst Disaster Prevent & Relief, Shanghai 200092, Peoples R China
[5] Univ Durham, Dept Math Sci, Durham DH1 3LE, England
[6] Univ Maryland, Dept Civil & Environm Engn, College Pk, MD 20742 USA
[7] Natl Univ Singapore, Dept Civil & Environm Engn, Singapore 117576, Singapore