吸能型连梁装置吸能部件结构设计及有限元分析
|
摘要
吸能型连梁装置的工作原理是在强震作用时通过将楔形块挤入吸能管使其发生弹塑性变形来吸收能量。吸能部件的设计是实现缓冲性能的关键。首先根据吸能部件的构造形式提出了其结构设计参数;在此基础上,运用塑性力学理论中的主应力法推导了吸能管的缓冲荷载理论计算公式;最后建立了吸能部件有限元模型,验证了理论计算公式的正确性,并分析了吸能管扩径变形的基本特征。
The working principle ofthe energy-absorbing unseating prevention device is to absorb energy by squeezing wedge-shaped blocks into the energy-absorbing tube to produce elastic-plastic deformation under strong earthquake action.The design ofenergy-absorbing components is the key to achieving the buffer performance. Firstly,the structure design parameters were proposed according to the structural forms ofthe energy-absorbing components.On this basis,the theoretical formula for calculating the buffer load ofthe energy-absorbing tube was derived by using the principal stress method in the plastic mechanics theory. Finally,the finite element model ofenergy-absorbing components was established,the correctness ofthe theoretical calculation formula was verified,and the basic characteristics ofthe expansion deformation ofthe energy-absorbing tube were analyzed.
The working principle ofthe energy-absorbing unseating prevention device is to absorb energy by squeezing wedge-shaped blocks into the energy-absorbing tube to produce elastic-plastic deformation under strong earthquake action.The design ofenergy-absorbing components is the key to achieving the buffer performance. Firstly,the structure design parameters were proposed according to the structural forms ofthe energy-absorbing components.On this basis,the theoretical formula for calculating the buffer load ofthe energy-absorbing tube was derived by using the principal stress method in the plastic mechanics theory. Finally,the finite element model ofenergy-absorbing components was established,the correctness ofthe theoretical calculation formula was verified,and the basic characteristics ofthe expansion deformation ofthe energy-absorbing tube were analyzed.
引文
[1]VERGER P,BARD D,NOIVILLE C,et al.Environmenta Disasters:Preparing for Impact Assessments and Operationa Feedback[J].American Journal of Disaster Medicine,2008,3(3):358-368.
[2]CHANG K C,CHANG D W,TSAI M H,et al.Seismic Performance of Highway Bridges[J].Earthquake Engineering&Engineering Seismology,2000,2(3):157-166.
[3]李鸿晶,陆鸣,温增平,等.汶川地震桥梁震害的特征[J]南京工业大学学报(自然科学版),2009,31(1):24-29.
[4]武野志之歩,大野敬美,伊津野和行.作動速度に基づく落橋防止用連結ケーブルと緩衝材の設計法に関する研究[J].Proceedings of JSCE,2003,731:341-352.
[5]村田清満,高山智宏,後藤貴士,等.エネルギー吸収機能を有する落橋防止装置による耐震補強効果[J].Proceedings of JSCE,2001,689:275-288.
[6]朱文正.公路桥梁减、抗震防落梁系统研究[D].西安:长安大学,2004.
[7]王卫峰.公路桥梁耗能型连梁装置的研究[D].西安:长安大学,2005.
[8]邢心魁,王逸飞.桥梁吸能型连梁装置吸能管吸能特性研究[J].工程抗震与加固改造,2017,39(5):137-142.
[9]孙志超,杨合.管轴压成形失稳起皱力学过程的研究[J].机械工程学报,2003,39(6):110-113.
[10]蔡锦达,程曦,王明军,等.锥形模机械扩径中失稳起皱分析与扩径力优化[J].工程力学,2010,27(11):178-183.
[11]WANG Z R.A Consistent Relationship Between the Stress and Strain-components and Its Application for Analyzing the Plane-stress Forming Process[J].Journal of Materials Processing Technology,1995,55(1):1-4.
[2]CHANG K C,CHANG D W,TSAI M H,et al.Seismic Performance of Highway Bridges[J].Earthquake Engineering&Engineering Seismology,2000,2(3):157-166.
[3]李鸿晶,陆鸣,温增平,等.汶川地震桥梁震害的特征[J]南京工业大学学报(自然科学版),2009,31(1):24-29.
[4]武野志之歩,大野敬美,伊津野和行.作動速度に基づく落橋防止用連結ケーブルと緩衝材の設計法に関する研究[J].Proceedings of JSCE,2003,731:341-352.
[5]村田清満,高山智宏,後藤貴士,等.エネルギー吸収機能を有する落橋防止装置による耐震補強効果[J].Proceedings of JSCE,2001,689:275-288.
[6]朱文正.公路桥梁减、抗震防落梁系统研究[D].西安:长安大学,2004.
[7]王卫峰.公路桥梁耗能型连梁装置的研究[D].西安:长安大学,2005.
[8]邢心魁,王逸飞.桥梁吸能型连梁装置吸能管吸能特性研究[J].工程抗震与加固改造,2017,39(5):137-142.
[9]孙志超,杨合.管轴压成形失稳起皱力学过程的研究[J].机械工程学报,2003,39(6):110-113.
[10]蔡锦达,程曦,王明军,等.锥形模机械扩径中失稳起皱分析与扩径力优化[J].工程力学,2010,27(11):178-183.
[11]WANG Z R.A Consistent Relationship Between the Stress and Strain-components and Its Application for Analyzing the Plane-stress Forming Process[J].Journal of Materials Processing Technology,1995,55(1):1-4.