Abstract
AbstractWhen The Great East Japan Earthquake of 2011 occurred, long‐span structures such as gymnasium with long‐span steel ceiling supported by RC columns was damaged as the bearings, which connected the steel roof column and the RC columns, were damaged. In this study, two effective improvements to prevent the pull‐out of anchor bolts and crushing of base mortar are proposed. The first improvement is to add disk springs between the base plate and anchor bolt nuts, which prevents the pull‐out of anchor bolts. In the second improvement, an elastic rubber plate is inserted between the base plate and mortar to avoid mortar crushing. Based on test results, an evaluation method for rotational stiffness is proposed, which can be calculated from the stiffness corresponding to the pre‐stressed force, disk spring, anchor bolts, and rotational spring constant of the rubber.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
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.