Elastic-Plastic Seismic Performance for Jacket Platform Based on Improved Modal Pushover Method

In connection with the elastic-plastic failure problem of offshore jacket platform subjected to a powerful earthquake, an improved modal pushover method based on performance design is proposed. The elastic-plastic seismic performance and failure modes of the jacket platform are obtained to solve the...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	LIU Hongbing, SUN Liping, AI Shangmao, YAN Fasuo, CHEN Guoming
Formato:	article
Lenguaje:	ZH
Publicado:	Editorial Office of Journal of Shanghai Jiao Tong University 2021
Materias:	jacket platform marine seismic elastic-plastic seismic performance improved modal pushover method failure mode seismic response Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Naval architecture. Shipbuilding. Marine engineering VM1-989
Acceso en línea:	https://doaj.org/article/6e5fb8e73c5d43cf8aa76fd9c79e4a5e
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:6e5fb8e73c5d43cf8aa76fd9c79e4a5e
record_format	dspace
spelling	oai:doaj.org-article:6e5fb8e73c5d43cf8aa76fd9c79e4a5e2021-11-04T09:28:54ZElastic-Plastic Seismic Performance for Jacket Platform Based on Improved Modal Pushover Method1006-246710.16183/j.cnki.jsjtu.2019.204https://doaj.org/article/6e5fb8e73c5d43cf8aa76fd9c79e4a5e2021-03-01T00:00:00Zhttp://xuebao.sjtu.edu.cn/CN/10.16183/j.cnki.jsjtu.2019.204https://doaj.org/toc/1006-2467In connection with the elastic-plastic failure problem of offshore jacket platform subjected to a powerful earthquake, an improved modal pushover method based on performance design is proposed. The elastic-plastic seismic performance and failure modes of the jacket platform are obtained to solve the problem of elastic-plastic performance evaluation of the offshore jacket platform in strong earthquakes. The elastic-plastic seismic responses of the platform in 8-degree seismic fortification and rare intensity are calculated by using different methods, and the differences between these responses are compared. Besides, the influences of combined modes, mode shape vectors, and uncertainties of seismic are discussed. The results show that the high-order vibration modes and mode shape vectors have a great influence on the elastic-plastic seismic performance of the platform. The first 9 or higher order modes and mode shape vectors should be adopted. The seismic-resistant weak links are located at the top of the platform in 8-degree seismic fortification and rare intensity, which should be paid more attention to. The seismic responses of the platform show significant differences and discreteness in different seismic activities, which have the same peak seismic acceleration. The improved modal pushover method is suggested to be used to evaluate the elastic-plastic seismic performance of jacket platform.LIU HongbingSUN LipingAI ShangmaoYAN FasuoCHEN GuomingEditorial Office of Journal of Shanghai Jiao Tong Universityarticlejacket platformmarine seismicelastic-plastic seismic performanceimproved modal pushover methodfailure modeseismic responseEngineering (General). Civil engineering (General)TA1-2040Chemical engineeringTP155-156Naval architecture. Shipbuilding. Marine engineeringVM1-989ZHShanghai Jiaotong Daxue xuebao, Vol 55, Iss 03, Pp 265-275 (2021)
institution	DOAJ
collection	DOAJ
language	ZH
topic	jacket platform marine seismic elastic-plastic seismic performance improved modal pushover method failure mode seismic response Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Naval architecture. Shipbuilding. Marine engineering VM1-989
spellingShingle	jacket platform marine seismic elastic-plastic seismic performance improved modal pushover method failure mode seismic response Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Naval architecture. Shipbuilding. Marine engineering VM1-989 LIU Hongbing SUN Liping AI Shangmao YAN Fasuo CHEN Guoming Elastic-Plastic Seismic Performance for Jacket Platform Based on Improved Modal Pushover Method
description	In connection with the elastic-plastic failure problem of offshore jacket platform subjected to a powerful earthquake, an improved modal pushover method based on performance design is proposed. The elastic-plastic seismic performance and failure modes of the jacket platform are obtained to solve the problem of elastic-plastic performance evaluation of the offshore jacket platform in strong earthquakes. The elastic-plastic seismic responses of the platform in 8-degree seismic fortification and rare intensity are calculated by using different methods, and the differences between these responses are compared. Besides, the influences of combined modes, mode shape vectors, and uncertainties of seismic are discussed. The results show that the high-order vibration modes and mode shape vectors have a great influence on the elastic-plastic seismic performance of the platform. The first 9 or higher order modes and mode shape vectors should be adopted. The seismic-resistant weak links are located at the top of the platform in 8-degree seismic fortification and rare intensity, which should be paid more attention to. The seismic responses of the platform show significant differences and discreteness in different seismic activities, which have the same peak seismic acceleration. The improved modal pushover method is suggested to be used to evaluate the elastic-plastic seismic performance of jacket platform.
format	article
author	LIU Hongbing SUN Liping AI Shangmao YAN Fasuo CHEN Guoming
author_facet	LIU Hongbing SUN Liping AI Shangmao YAN Fasuo CHEN Guoming
author_sort	LIU Hongbing
title	Elastic-Plastic Seismic Performance for Jacket Platform Based on Improved Modal Pushover Method
title_short	Elastic-Plastic Seismic Performance for Jacket Platform Based on Improved Modal Pushover Method
title_full	Elastic-Plastic Seismic Performance for Jacket Platform Based on Improved Modal Pushover Method
title_fullStr	Elastic-Plastic Seismic Performance for Jacket Platform Based on Improved Modal Pushover Method
title_full_unstemmed	Elastic-Plastic Seismic Performance for Jacket Platform Based on Improved Modal Pushover Method
title_sort	elastic-plastic seismic performance for jacket platform based on improved modal pushover method
publisher	Editorial Office of Journal of Shanghai Jiao Tong University
publishDate	2021
url	https://doaj.org/article/6e5fb8e73c5d43cf8aa76fd9c79e4a5e
work_keys_str_mv	AT liuhongbing elasticplasticseismicperformanceforjacketplatformbasedonimprovedmodalpushovermethod AT sunliping elasticplasticseismicperformanceforjacketplatformbasedonimprovedmodalpushovermethod AT aishangmao elasticplasticseismicperformanceforjacketplatformbasedonimprovedmodalpushovermethod AT yanfasuo elasticplasticseismicperformanceforjacketplatformbasedonimprovedmodalpushovermethod AT chenguoming elasticplasticseismicperformanceforjacketplatformbasedonimprovedmodalpushovermethod
_version_	1718444966534971392

Elastic-Plastic Seismic Performance for Jacket Platform Based on Improved Modal Pushover Method

Ejemplares similares