摩擦摆隔震桥梁简化力学模型动力学分析

李冰; 王少华; 邓斌

doi:10.16579/j.issn.1001.9669.2015.05.030

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摩擦摆隔震桥梁简化力学模型动力学分析

振动·噪声·监测·诊断 | 更新时间：2022-09-22

- 摩擦摆隔震桥梁简化力学模型动力学分析
- DYNAMIC ANALYSIS OF FPB ISOLATED BRIDGES BASED ON SIMPLIFIED MECHANICAL MODEL
- 机械强度 2015年37卷第5期页码：800-805
- 作者机构：
  
  1. 西南交通大学机械工程学院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2015.05.030
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李冰, 王少华, 邓斌. 摩擦摆隔震桥梁简化力学模型动力学分析[J]. 机械强度, 2015,37(5):800-805.

LI Bing, WANG ShaoHua, DENG Bin. DYNAMIC ANALYSIS OF FPB ISOLATED BRIDGES BASED ON SIMPLIFIED MECHANICAL MODEL[J]. 2015,37(5):800-805.
李冰, 王少华, 邓斌. 摩擦摆隔震桥梁简化力学模型动力学分析[J]. 机械强度, 2015,37(5):800-805. DOI： 10.16579/j.issn.1001.9669.2015.05.030.

LI Bing, WANG ShaoHua, DENG Bin. DYNAMIC ANALYSIS OF FPB ISOLATED BRIDGES BASED ON SIMPLIFIED MECHANICAL MODEL[J]. 2015,37(5):800-805. DOI： 10.16579/j.issn.1001.9669.2015.05.030.

摘要

建立摩擦摆隔震桥梁简化力学模型,采用模态叠加法计算地震作用下的响应幅值。通过与SAP2000有限元实体模型仿真结果对比,研究简化力学模型的计算精度。结果表明:简化力学模型能够较为准确计算出隔震桥梁的响应幅值;El Centro地震波作用下,简化力学模型的分析结果基本能够满足工程精度要求;隔震桥梁主梁及桥墩地震响应分别以隔震模态、二阶模态为主。

Abstract

Simplified mechanical model of FPB isolated bridges was established,the response amplitude was calculated used mode superposition method.The accuracy of results was verified by finite element simulation based on SAP2000.It was considered that the response amplitude agreed well with that of finite element simulation.Under the action of El Centro seismic wave,the results can meet engineering precision requirements basically.The response of girder and pier were mainly influenced by the isolated mode and second mode.

关键词

隔震桥梁摩擦摆力学模型动力学分析有限元仿真

Keywords

Isolated bridgesFriction pendulum bearingMechanical modelDynamic AnalysisFinite element simulation

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