期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：304
期号：3
页码：1-9
DOI：10.1088/1755-1315/304/3/032090
出版社：IOP Publishing
摘要：In the design of hydraulic structures, keyway are often arranged between adjacent structures to increase their integrity. Spherical keyway is more and more used in the transverse joints of high arch dams. However, the layout of keyway is dense in transverse slot and the simulation workload is huge. Very few reports have been reported on accurately pointing out the working mechanism and force mechanism of transverse joint keyway in high arch dam during earthquake. In this paper, the contact force transmission characteristics of spherical keyway are studied and the contact mechanics equation of spherical keyway is derived. A three-dimensional finite element fine simulation model of spherical keyway is established by using parametric modeling technology, and high performance calculation is carried out by using parallel computing technology. Real-time dynamic simulation of the working behavior of spherical keyway in earthquake reveals the variation of contact position, contact stress and contact mode of spherical keyway in parallel and vertical joints. The research results lay a solid foundation for in-depth seismic response analysis and seismic safety design of high arch dams.
