01519262

Component

The Missouri Department of Transportation (MoDOT) Engineering Policy Guide for driven piles currently uses the provided resistance factors from the American Association of State Highway and Transportation Officials - Load and Resistance Factor Design (AASHTO LRFD) Bridge Manual (2010). In 2008, MoDOT began its first research program to develop a set of resistance factors based on local practice and geology. Using historical construction records of dynamic testing, new resistance factors were developed for driven piles. The resistance factors obtained from the 2008-2010 research effort were strictly based on the assumption that the dynamic methods (PDA and CAPWAP) provide the actual ultimate capacity of the pile, as no records of static pile load test data were available for verification. In 2012, a series of static load tests were conducted at new construction bridge sites along the Missouri highway system to adjust the 2008-10 resistance factors and evaluate their use in Missouri LRFD guidelines. The results show that the data produced by dynamic methods is acceptable to develop resistance factors based on the completed pile load tests conducted at the different new construction bridge sites.

This paper was sponsored by TRB committee AFS30 Foundations of Bridges and Other Structures. Alternate title: Evaluation of Pile Load Tests for Use in Missouri Load and Resistance Factor Design Guidelines.

01503729

14-3973

English

12p

2014

Transportation Research Board 93rd Annual Meeting

Digital/other

Figures; Maps; References; Tables

Bearing capacity; Bridge construction; Evaluation and assessment; Guidelines; Load and resistance factor design; Load tests; Resistance tests; Support piles

Missouri Department of Transportation

Missouri

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

Transportation Research Board Annual Meeting 2014 Paper #14-3973

TRIS, TRB, ATRI

Jan 27 2014 3:22PM