Abstract
The structural design of substructure requires the modulus of a subgrade reaction of the underlying stratum at the soil-structure interface. Its magnitude is estimated by plate load tests at the site. The present study reviewed the magnitudes of the modulus of subgrade reactions obtained from plate load tests, elastic continuum solutions, and a soil-structure interaction analysis of a 2-km tunnel resting on weak sandstones and siltstones. The review showed that the structural adequacy of the substructure using the modulus of subgrade reaction obtained from the Terzaghi equation for plate load tests would not be satisfactory. A modified Terzaghi’s equation is presented so that the magnitude of the modulus of subgrade reaction obtained is of the same order of the magnitude as that obtained from the soil-structure interaction analysis and elastic continuum solutions. The proposed modified Terzaghi’s equation is applied to the plate load test results of two separate projects elsewhere to confirm its validity.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Practice Periodical on Structural Design and Construction
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
