Lock and Dam Number 26 (Replacement) Cofferdam Experimental and Analytical Study. Report 5. Tensile Tests of Steel Sheet Piles

摘要

A comprehensive tensile testing and analysis program for steel sheet pile specimens was conducted to develop useful data characterizing the failure mechanisms. Analysis of the behavior of individual sheet piles as well as sheet piles combined as a system are described. Particular attention was given to the interlock joints connecting the sheet pile specimens. A total of 10 sheet pile tensile tests were performed using steel material from two manufacturers. Five of the sheet pile specimens were of standard-strength steel and five were of high-strength steel. Extensive documentation of the tests included strain gages with XY plots, linear variable displacement transducer displacement readings, before and after tracings of the configurations of the sheet pile specimens as tested, photographic deformation histories, and video cassette recordings of the tests. Failure of each sheet pile specimen was a result of separation of the connecting interlock joints due to bending deformations. A regression analysis of the data was conducted to provide a best fit equation of the load versus deformation to provide input for a finite element code on sheet pile cofferdams being developed by the US Army Engineer Waterways Experiment Station and Virginia Polytechnic Institute. (fr)