多跨桥梁结构的网络协同拟动力实验研究
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摘要
多跨桥梁结构具有体型巨大、结构复杂等特点,一般仅利用数值模拟或局部构件试验进行研究,随着全世界结构实验室的升级改造,使得通过抗震实验方法对其进行抗震研究成为可能;本文首先介绍目前国内外具代表性的多跨桥梁的抗震实验方法,包括美国NEES的Fast-Most试验、台湾地区ISEE的多跨桥梁混合试验、日本的高架桥拟动力混合试验等;然后重点阐述国内外高校联合开展的基于NetSLab平台的多跨桥梁FRP加固钢混短柱的网络协同拟动力实验。结果表明:网络协同拟动力实验作为一种新型的结构抗震实验研究手段,具有资源共享、协同工作等特点,针对多跨桥梁结构具有很强的可行性和有效性;最后,结合其它结构类型提出了一些建议和展望。
Because of large-scale and complexity of Multi-span Bridge(MSB),we usually using numerical simulation and element tests to carry out research.By the equipments of structure laboratory all over the world updated,Seismic Testing Method(STM) was used to explore the performance of MSB;In this paper,firstly we introduced several representative STM of MSB home and abroad,including Fast-Most in NEES,hybrid testing with MSB of ISEE,international collaborative pseudo-dynamic testing for elevated bridges in Japan,etc;then we placed emphasis on Network collaborative pseudo-dynamic testing(NCPDT) of MSB with FRP Retrofitted RC short columns based on NetSLab,this test was cooperated by several universities.The results proved that NCPDT as a new STM was very adapt to MSB;At last,some suggestion to other structures were presented.
Because of large-scale and complexity of Multi-span Bridge(MSB),we usually using numerical simulation and element tests to carry out research.By the equipments of structure laboratory all over the world updated,Seismic Testing Method(STM) was used to explore the performance of MSB;In this paper,firstly we introduced several representative STM of MSB home and abroad,including Fast-Most in NEES,hybrid testing with MSB of ISEE,international collaborative pseudo-dynamic testing for elevated bridges in Japan,etc;then we placed emphasis on Network collaborative pseudo-dynamic testing(NCPDT) of MSB with FRP Retrofitted RC short columns based on NetSLab,this test was cooperated by several universities.The results proved that NCPDT as a new STM was very adapt to MSB;At last,some suggestion to other structures were presented.
引文
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[8]肖岩,胡庆,郭玉荣,等.结构拟动力远程协同试验网络平台的开发研究[J].建筑结构学报,2005,26(3):122-129.
[2]范力,赵斌,吕西林.拟动力试验中几个问题的讨论[J].结构工程师,2006,22(5):50-53.
[3]程绍革,白雪霜,赵鹏飞,等.结构抗震混合试验技术初探[J].工程抗震与加固改造,2005,27(5):68-70.
[4]Mosqueda G,Stojadinovic B,Hanley J,et al.Fast Hybrid Simulation with Geographically Distributed Substructures[J].Advances in Experimental Structural Engineering,ASCE,2005,18(1):449-456.
[5]黄宝锋,卢文胜,宗周红.地震模拟振动台阵系统模型试验方法探讨[J].土木工程学报,2008,41(3):46-52.
[6]Wang K J,Lin B Z,Cheng W C,et al.A Platform for Networked Collaborative Structural Experiments[J].Advances in Experimental Structural Engineering,ASCE,2005,18(1):433-440.
[7]Takashi Y,Kazutoshi N,Eiichi W,et al.International Collaborative Pseudo-dynamic Testing Method For Continuous Elevated Bridges By Using Internet[J].Advances in Experimental Structural Engineering,ASCE,2005,18(1):371-376.
[8]肖岩,胡庆,郭玉荣,等.结构拟动力远程协同试验网络平台的开发研究[J].建筑结构学报,2005,26(3):122-129.
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