• 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:

Li, Jinqiang (Li, Jinqiang.) | Zhong, Zilan (Zhong, Zilan.) | Wang, Shurui (Wang, Shurui.) | Bi, Kaiming (Bi, Kaiming.) | Hao, Hong (Hao, Hong.)

收录:

EI Scopus SCIE

摘要:

The corrosion-protection liner (CPL) technology consists of installing flexible plastic liners with anchoring studs inside existing pipelines and subsequently filling cement mortar to the gap between the waterproof liner and the pipeline. With the excellent chemical resistance, impermeability and fast construction speed, CPL provides an economical and environmentally friendly alternative for pipeline rehabilitation without large-scale excavation. However, the seismic performance of water supply pipelines after being retrofitted with CPL has not been well studied yet. In this study, a series of full-scale quasi-static experiments were firstly conducted on ductile-iron push-on joints before and after reinforcement with CPL to investigate the nonlinear behavior of the joints under longitudinal load and transverse bending. Simplified numerical models of straight pipelines with joints before and after retrofitting in the non-uniform site were then developed in the OpenSees platform, and incremental dynamic analysis (IDA) were performed with consideration of nonlinear soil-pipeline interaction. Twenty-eight pairs of ground motions with the peak ground velocities (PGV) collectively scaled from 200 mm/s to 3000 mm/s were used as inputs. Seismic fragility curves of the pipelines before and after retrofitting were developed with respect to the optimum intensity measure, PGV. It can be seen from the experimental results that the longitudinal load and bending moment capacity of the push-on joint increased about 400% and 20% after CPL reinforcement, respectively, and the joint opening and rotation decreased about 20% and 18% after retrofitting. Numerical results show that the CPL reinforced pipelines exhibit better seismic performance and CPL effectively reduces the failure probability of segmented pipelines under earthquake ground excitations.

关键词:

Non-uniform site Buried water supply pipelines Seismic fragility analysis Incremental dynamic analysis Corrosion-protection liner

作者机构:

  • [ 1 ] [Li, Jinqiang]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 2 ] [Zhong, Zilan]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 3 ] [Wang, Shurui]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 4 ] [Bi, Kaiming]Hong Kong Polytech Univ, Dept Civil & Environm Engn, Kowloon, Hong Kong, Peoples R China
  • [ 5 ] [Hao, Hong]Guangzhou Univ, Earthquake Engn Res & Test Ctr, Guangdong Prov Key Lab Earthquake Engn & Appl Tech, Guangzhou, Peoples R China
  • [ 6 ] [Hao, Hong]Curtin Univ, Ctr Infrastruct Monitoring & Protect, Sch Civil & Mech Engn, 7 Kent St, Bentley, WA 6102, Australia

通讯作者信息:

  • [Zhong, Zilan]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China;;

查看成果更多字段

相关关键词:

来源 :

SOIL DYNAMICS AND EARTHQUAKE ENGINEERING

ISSN: 0267-7261

年份: 2023

卷: 176

4 . 0 0 0

JCR@2022

被引次数:

WoS核心集被引频次: 7

SCOPUS被引频次: 10

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: 1

归属院系:

在线人数/总访问数:380/4939075
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