关键词: 特高拱坝, 拱坝抗震钢筋, 抗震设计, 非线性有限元

Abstract: Due to strong earthquake, the transverse joints of super-high arch dams expand easily and the stress in arches and beams would redistribute, which can affect the dam integrity and seismic safety. In this paper, the anti-seismic effect of arch-direction across-joint rebar and beam-direction crack restraint rebar installed in the middle-upper part of Dagangshan arch dam were analyzed by using three-dimensional non-linear finite element method. The results showed that arch-direction across-joint reinforced bars had a remarkable restraint effect on expansion of transverse joints, and beam-direction rebars had a remarkable effect on restraining seismic damage of dam. The research results provide theory basis for engineering design of super-high arch dam.

Key words: super-high arch dam, anti-seismic rebar of arch dam, anti-seismic design, nonlinear FEM;