Real strain evolution in concrete columns, monitoring results and CEB-FIP Model Code 1990

Branko Glisic, Daniele Inaudi, Joo Ming Lau, Chor Cheong Fong

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A large-scale lifetime buildings monitoring program has been implemented in Singapore since the year 2001. Besides global structural behavior, monitoring provided important information of real on-site long-term behavior of concrete, which is the topic of this paper. The long-gage fiber optic average strain sensors were embedded in fresh concrete of ground-level columns, thus the monitoring started with the birth of both the construction material and the structure. Measurement sessions were performed during construction, upon completion of each new story and roof, and after the construction, including long-term creep and shrinkage. Differential settlement of foundations was recorded and post-tremor analysis was performed. The monitored strain of each column was compared with strain estimated using a simplified CEB-FIP Model Code 1990 with aim to evaluate how good the estimations of rheologic strain based on this approach are. The employed monitoring system, the results gathered over more than seven years of monitoring containing records of various events, data analysis methods, and comparison with simplified CEB-FIP Model Code 1990 are presented in this paper. Important conclusions concerning the real behavior of concrete and suitability of simplified CEB-FIP Model Code 1990 for prediction of rheological strain components are carried out.

Original languageEnglish (US)
Title of host publication3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference
Subtitle of host publicationThink Globally, Build Locally, Proceedings
PublisherPrecast Prestressed Concrete Institute
ISBN (Electronic)9780937040904
StatePublished - Jan 1 2010
Event3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference 2010 - Washington, United States
Duration: May 29 2010Jun 2 2010

Publication series

Name3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference: Think Globally, Build Locally, Proceedings

Other

Other3rd International fib Congress and Exhibition, Incorporating the PCI Annual Convention and Bridge Conference 2010
CountryUnited States
CityWashington
Period5/29/106/2/10

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Civil and Structural Engineering

Keywords

  • CEB-FIP Model Code 1990
  • Creep and shrinkage
  • Fiber optic strain sensors
  • High-rise building
  • Long-term monitoring
  • Rheologic strain

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