Location

Arlington, Virginia

Session Start Date

8-11-2008

Session End Date

8-16-2008

Abstract

This paper introduces a case where pipe piles failed during construction. The accident happened when constructing the Jiaoxi Pumping Station project in the southern China. The site consists of very soft sludge and silt deposits. Pipe piles were used as foundation under the station structure. The installed pipe piles were observed to show significant inclination during the construction. A forensic investigation was performed. The driving forces for pipe pile failure were attributed to the lateral load induced by the excavation activities. Small strain integrity test and inclination measurement were taken to determine the location of breakage and the extent of inclination. The test results combined with theoretical analysis were able to determine the cause of pipe pile failure. Remediation measures were designed and implemented based on the results of forensic analyses. Recommendations were proposed to guide construction activities on soft soil deposit. The results of implementing these guidelines during remediation construction were satisfactory.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Sixth Conference

Publisher

Missouri University of Science and Technology

Publication Date

8-11-2008

Document Version

Final Version

Rights

© 2008 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

Share

 
COinS
 
Aug 11th, 12:00 AM Aug 16th, 12:00 AM

Forensic on Construction Induced Failure of Pipe Pile Foundations

Arlington, Virginia

This paper introduces a case where pipe piles failed during construction. The accident happened when constructing the Jiaoxi Pumping Station project in the southern China. The site consists of very soft sludge and silt deposits. Pipe piles were used as foundation under the station structure. The installed pipe piles were observed to show significant inclination during the construction. A forensic investigation was performed. The driving forces for pipe pile failure were attributed to the lateral load induced by the excavation activities. Small strain integrity test and inclination measurement were taken to determine the location of breakage and the extent of inclination. The test results combined with theoretical analysis were able to determine the cause of pipe pile failure. Remediation measures were designed and implemented based on the results of forensic analyses. Recommendations were proposed to guide construction activities on soft soil deposit. The results of implementing these guidelines during remediation construction were satisfactory.