• 综合
  • 标题
  • 关键词
  • 摘要
  • 学者
  • 期刊-刊名
  • 期刊-ISSN
  • 会议名称
搜索

作者:

Pan, Haiyang (Pan, Haiyang.) | Li, Chao (Li, Chao.) | Li, Hong-Nan (Li, Hong-Nan.) | Ma, Ruisheng (Ma, Ruisheng.) | Guo, Jin (Guo, Jin.)

收录:

EI Scopus SCIE

摘要:

Local site conditions may pose a significant influence on the seismic responses of submarine pipelines by altering both the offshore motion propagation and soil-structure interaction (SSI). This paper aims to provide an in-depth understanding of the influence regularity of local site conditions on the seismic performance of free-spanning submarine pipelines (FSSPs). For this purpose, a suite of underwater shaking table tests were performed to investigate the seismic responses of FSSP subjected to the offshore spatial motions at three site categories. Response comparison factor (chi R.ij${\chi }_{R.ij}$) is defined to quantify the structural response discrepancies caused by the seismic inputs at different sites. The test results indicate that responses of the studied model FSSP gradually increase as spatial offshore motions at softer soil sites are employed as inputs; and the values of chi R.ij${\chi }_{R.ij}$ vary with a maximum magnitude of up to 40%-60% for different response indices when the site soil changes from fine sand to clay. Subsequently, the corresponding numerical simulations are carried out to reproduce the seismic responses of the test model. The experimental and numerical results meet a good agreement, indicating that the developed numerical modeling method can accurately predict the seismic responses of FSSPs. Following this verified modeling method and using the p-y approach to address the SSI effect, fragility surfaces of the studied FSSP are derived in terms of PGA and site parameter VS30${V}_{S30}$ (shear-wave velocity in the top 30 m of the soil profile) via probabilistic seismic demand analyses. The impact of local site conditions on the seismic performance of the FSSP is quantitatively examined by comparing the fragility curves corresponding to various VS30${V}_{S30}$. Furthermore, a fast seismic damage assessment method is proposed for efficiently evaluating the performance of FSSPs buried in various offshore soil conditions. This approach proves beneficial for designers and decision-makers, enabling accurate estimation of seismic damage and facilitating the implementation of post-earthquake maintenance measures for FSSPs.

关键词:

local site conditions fast assessment method fragility analysis underwater shaking table tests free-spanning submarine pipelines

作者机构:

  • [ 1 ] [Pan, Haiyang]Shijiazhuang Tiedao Univ, Minist Educ, Key Lab Rd & Railway Engn Safety Control, Shijiazhuang, Peoples R China
  • [ 2 ] [Guo, Jin]Shijiazhuang Tiedao Univ, Minist Educ, Key Lab Rd & Railway Engn Safety Control, Shijiazhuang, Peoples R China
  • [ 3 ] [Pan, Haiyang]Shijiazhuang Tiedao Univ, Sch Civil Engn, Shijiazhuang, Peoples R China
  • [ 4 ] [Guo, Jin]Shijiazhuang Tiedao Univ, Sch Civil Engn, Shijiazhuang, Peoples R China
  • [ 5 ] [Pan, Haiyang]Dalian Univ Technol, Sch Infrastruct Engn, Dalian 116024, Peoples R China
  • [ 6 ] [Li, Chao]Dalian Univ Technol, Sch Infrastruct Engn, Dalian 116024, Peoples R China
  • [ 7 ] [Li, Hong-Nan]Dalian Univ Technol, Sch Infrastruct Engn, Dalian 116024, Peoples R China
  • [ 8 ] [Ma, Ruisheng]Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing, Peoples R China

通讯作者信息:

电子邮件地址:

查看成果更多字段

相关关键词:

来源 :

EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS

ISSN: 0098-8847

年份: 2024

期: 14

卷: 53

页码: 4223-4247

4 . 5 0 0

JCR@2022

被引次数:

WoS核心集被引频次:

SCOPUS被引频次: 2

ESI高被引论文在榜: 0 展开所有

万方被引频次:

中文被引频次:

近30日浏览量: 0

归属院系:

在线人数/总访问数:491/4931349
地址:北京工业大学图书馆(北京市朝阳区平乐园100号 邮编:100124) 联系我们:010-67392185
版权所有:北京工业大学图书馆 站点建设与维护:北京爱琴海乐之技术有限公司