00672556

Component

http://onlinepubs.trb.org...trr/1994/1447/1447-006.pdf

https://scholar.google.co...land&publication_year=1994

Recent advances in rig-mounted computer-controlled monitoring and recording of pile-installation processes have allowed reliable and high-quality control to be developed. An automatic method for assessing the quality of continuous-flight-auger (CFA) pile-installation data, recorded during construction, is now well proven and most successful as both a management tool and as part of internal quality control of Cementation Piling & Foundations Limited in the United Kingdom. The data contain all the pertinent control parameters that when analyzed can identify important imperfections in the pile construction. The impact of these anomalies on the foundation behavior may then be assessed and any additional pile testing or corrective action prescribed if appropriate. Computers have also found their way into the practice of static load-testing for which they may be employed to monitor the pile-head displacement and the load applied by using electronic sensors. In addition, they can be made to control directly the load applied with regularity and accuracy that are unsurpassed. The quality of data returned from such test equipment has promoted the development of pile-behavioral models that have demonstrated remarkable accuracy in characterizing the measured pile behavior. The advances in this field are significant to soil mechanics generally, not just to pile behavior. The technique for modeling pile behavior under load has been developed into an important foundation-design tool that also allows the introduction of a sensible partial-factoring system that can be applied according to specific design conditions.

This paper appears in Transportation Research Record No. 1447, Design and Construction of Auger Cast Piles, and Other Foundation Issues. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01401277

English

p. 39-48

1994

Transportation Research Record

0309060532

Figures (8) ; References (7)

Accuracy; Construction; Design; Load tests; Mathematical models; Monitoring; Quality assurance; Static loads; Support piles

Static load test

Bridges and other structures; Construction; Design; Highways; I24: Design of Bridges and Retaining Walls; I53: Construction of Bridges and Retaining Walls

TRIS, TRB

Jan 13 1995 12:00AM

• ANALYTICAL MODELING OF SPREAD FOOTING FOUNDATIONS FOR SEISMIC ANALYSIS OF BRIDGES
• ATLAS SCREW PILE: A VIBRATION-FREE, FULL DISPLACEMENT, CAST-IN-PLACE PILE
• BITUMEN COATING FOR DOWNDRAG MITIGATION IN COHESIONLESS SOILS
• BUCKLING OF FRICTION PILES SUPPORTING BRIDGE FOUNDATIONS
• DESIGN AND CONSTRUCTION OF AUGER-CAST PILES IN FLORIDA
• DESIGN AND CONSTRUCTION OF STARSOL PILES
• DETERMINING LENGTHS OF INSTALLED TIMBER PILES BY DISPERSIVE WAVE PROPAGATION
• FORMALIZED PROCEDURE FOR QUALITY ASSESSMENT OF CAST-IN-PLACE SHAFTS USING SONIC PULSE ECHO METHODS
• LRFD CODE FOR ONTARIO BRIDGE SUBSTRUCTURES
• MANAGING THE INSTALLATION OF AUGERED CAST-IN-PLACE PILES
• REDUCED IMPACT ON ADJACENT STRUCTURES USING AUGERED CAST-IN-PLACE PILES
• REVIEW OF AUGERED PILE PRACTICE OUTSIDE THE UNITED STATES
• USE OF DEEP BLAST DENSIFICATION FOR BRIDGE FOUNDATION IMPROVEMENT ON SR-504