SYMPOSIA PAPER Published: 29 July 2019
STP161120180007

Unit Side Shear in Rock-Socketed Bored Piles

Source

The results of 89 bidirectional axial static load tests conducted on rock-socketed bored piles are presented herein. Based on the test results, a linear empirical relation for estimating the ultimate unit side shear from rock uniaxial compressive strength is proposed. The empirical relation indicates that approximately 5 % of rock compressive strength can be used as a predesign unit side shear value. Based on a statistical analysis of the test database, multiplication factors for estimating unit side shear at different shear displacements are developed. In addition, the influences of rock strength and socket dimensions on unit side shear are evaluated. The socket embedment ratio has the greatest influence, whereas the socket diameter does not show any significant influence.

Author Information

Ayithi, Aditya
3C Drilling, LLC, Quakertown, PA, US
Ryan, William, G.
Loadtest USA, Gainesville, FL, US
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Details
Developed by Committee: D18
Pages: 97–127
DOI: 10.1520/STP161120180007
ISBN-EB: 978-0-8031-7668-3
ISBN-13: 978-0-8031-7667-6