铁基形状记忆合金-变摩擦复摆隔震连续梁桥地震反应分析

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振动与冲击 ›› 2025, Vol. 44 ›› Issue (1) : 262-271.

土木工程

铁基形状记忆合金-变摩擦复摆隔震连续梁桥地震反应分析

尚继英，娄东旭，韩建平*，宋炳磊，马润博

作者信息 +

Seismic response analysis of continuous beam bridge with Fe-SMA-DVFPBs

SHANG Jiying, LOU Dongxu, HAN Jianping*, SONG Binglei, MA Runbo

Author information +

文章历史 +

摘要

针对传统摩擦复摆隔震桥梁支座位移过大、自复位能力不足等问题，利用变摩擦机制和形状记忆合金的超弹性特性，研发了一种新型铁基形状记忆合金变摩擦复摆隔震支座（iron-based shape memory alloy-double concave variable friction pendulum bearing, Fe-SMA-DVFPB）。构建其本构模型，并确定其等效分析模型。提出Fe-SMA-DVFPB隔震桥梁基于位移的抗震设计方法，以实际工程为背景，分别设计了应用不同类型支座的隔震桥梁，并对用不同类型支座隔震的桥梁抗震性能进行对比分析。研究表明：相比传统摩擦复摆支座隔震桥梁，Fe-SMA-DVFPB隔震桥梁支座相对位移最大减小量为23.79%，残余位移最大减小量为93.56%；应用Fe-SMA-DVFPB隔震支座能更有效地控制支座相对位移与残余位移；Fe-SMA-DVFPB隔震桥梁支座相对位移与残余位移减小量明显大于墩底弯矩和剪力增加量。Fe-SMA-DVFPB能够进一步提升桥梁的震后可恢复能力。

Abstract

Addressing concerns such as excessive displacement and inadequate self-resetting capabilities in bearings for isolated bridges employing traditional double friction pendulum bearings, a new type of iron-based shape memory alloy-double concave variable friction pendulum bearing (Fe-SMA-DVFPB) was developed utilizing both the variable friction mechanism and the superelastic characteristics of shape memory alloy. Its constitutive model is constructed and its equivalent analysis model is determined. The displacement-based seismic design method of isolated bridges employing Fe-SMA-DVFPB is proposed. Drawing from practical engineering insights, isolation bridges are individually designed with various types of bearings, facilitating a comparative and analytical examination of their seismic performance. The research findings indicate that, in comparison to isolated bridges equipped with traditional double friction pendulum bearings, those utilizing Fe-SMA-DVFPBs demonstrate a notable improvement, with a maximum reduction in the relative displacement of bearings and residual displacement by 23.79% and 93.56%, respectively. The application of Fe-SMA-DVFPB isolation bearings effectively enhances control over both relative displacement and residual displacement. The decrease in relative displacement and residual displacement of the bearings in the isolated bridge significantly exceeds the increase in bending moment and shear at the pier bottom. The implementation of Fe-SMA-DVFPB can enhance the post-earthquake resilience of bridges.

导出引用

尚继英, 娄东旭, 韩建平, 宋炳磊, 马润博. 铁基形状记忆合金-变摩擦复摆隔震连续梁桥地震反应分析[J]. 振动与冲击, 2025, 44(1): 262-271

SHANG Jiying, LOU Dongxu, HAN Jianping, SONG Binglei, MA Runbo. Seismic response analysis of continuous beam bridge with Fe-SMA-DVFPBs[J]. Journal of Vibration and Shock, 2025, 44(1): 262-271

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