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本文以云南省格巧高速小江特大连续刚构桥(70m+5×120m+70m)为依托,开展了不同约束体系方案抗震性能分析比选,提出了该桥合理抗震体系下的两水准设防水准和设防目标,结合《公路桥梁抗震设计细则》和美国LRFD抗震设计规范,对高烈度区深水高墩大跨连续刚构桥梁抗震分析和抗震性能的评价进行了论述,可为同类桥梁的抗震设计提供参考和依据。
Based on the 70m + 5 × 120m + 70m ultra-continuous rigid frame bridge constructed by Xiaoqiaosu Expressway in Yunnan Province, the seismic performance analysis and comparison of different constrained system schemes are carried out. The two-level fortification standard under the rational seismic system of the bridge is proposed Seismic design and seismic performance of long-span continuous rigid-frame bridges with high-pier and high-pier in high-intensity area are discussed in combination with the Code of Aseismic Design of Highway Bridges and LRFD Seismic Design Code of the United States, which can be used for seismic design of similar bridges Provide reference and basis.