Panars
Geotechnical
- Apr 18, 2005
- 298
Does anyone use the composite section for the part of the soldier pile encased in concrete? We are using H-piles and W-sections placed in a drilled hole and filled with concrete to stabilize landslides in Ohio. The designs I have seen typically use the section modulus of the steel only and neglect the concrete. It seems a shame to totally neglect all that expensive concrete.
In my research I have found the following info. AASHTO basically refers to the AISC for concrete-encased beams. The 9th edition of the AISC (the green book) says that if the section is totally encased in concrete then shear studs are not required, and one can design based on 0.6Fy and the composite section, or 0.76Fy and just the steel section.
I have not found any design examples of concrete-encased beams or any recent journal articles that are entirely appropriate. Most deal with beam-columns which must include longitudinal and transverse reinforcement in the concrete in addition to the steel section.
Peter Narsavage
Columbus, Ohio
In my research I have found the following info. AASHTO basically refers to the AISC for concrete-encased beams. The 9th edition of the AISC (the green book) says that if the section is totally encased in concrete then shear studs are not required, and one can design based on 0.6Fy and the composite section, or 0.76Fy and just the steel section.
I have not found any design examples of concrete-encased beams or any recent journal articles that are entirely appropriate. Most deal with beam-columns which must include longitudinal and transverse reinforcement in the concrete in addition to the steel section.
Peter Narsavage
Columbus, Ohio