大型振动离心机土建总体设计与关键技术研究
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摘要
大型振动离心机是研究岩土地震工程动力问题最有效的试验设备,目前全球仅有两台,而国内尚属空白。作为尖端试验设备,大型振动离心机的建造几乎在所有方面都面临着新挑战,其土建设计也存在诸多新的问题。研究了试验室总体布局及相关土建工程中的几个关键技术,提出了设备总体布局方案,比较了主机室不同冷却系统类型和优缺点,阐述了基础设计的基本要求与难点,可为国内外大型振动离心机建设提供参考。
A large scale centrifugal shaker is the most effective testing facility for research on dynamic problems in geotechnical earthquake engineering.There are only two such shaker worldwide nowadays,whereas,no one has been established in China.As the most advanced testing facility,almost every aspect in the building of a large scale centrifugal shaker encounters new challenges.Meanwhile,the construction also faces some new problems.In this paper,the general layout of laboratory and some relevant key technologies of construction were investigated and the scheme of equipment general layout was proposed.The advantages and limitations of different cooling systems in the main set hall were compared and basic requirements and difficulties of foundation design were discussed,which can provide a reference to construction of large-scale centrifugal shakers at home and abroad.
A large scale centrifugal shaker is the most effective testing facility for research on dynamic problems in geotechnical earthquake engineering.There are only two such shaker worldwide nowadays,whereas,no one has been established in China.As the most advanced testing facility,almost every aspect in the building of a large scale centrifugal shaker encounters new challenges.Meanwhile,the construction also faces some new problems.In this paper,the general layout of laboratory and some relevant key technologies of construction were investigated and the scheme of equipment general layout was proposed.The advantages and limitations of different cooling systems in the main set hall were compared and basic requirements and difficulties of foundation design were discussed,which can provide a reference to construction of large-scale centrifugal shakers at home and abroad.
引文
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[3]王永志,孙锐,陈龙伟,等.大型振动离心机试验辅助系统分析[J],世界地震工程,2010,26(增):253-257.WANG Yongzhi,SUN Rui,CHEN Longwei,et al.An analysis on testing auxiliary system of large scale centrifugal shaker[J].World EarthquakeEngineering,2010,26(Sup):253-257.
[4]侯瑜京.土工离心机振动台及其试验技术[J].中国水利水电科学研究院学报,2006,4(1):15-22.HOU Yujing.Centrifuge shakers and testing technique[J].Journal of China Instituteof Water Resources and Hydropower Research.2006,4(1):15-22.
[5]张建民,于玉贞,濮家骝,等.电液伺服控制离心机振动台系统研制[J].岩土工程学报,2004,26(6):843-845.ZHANG Jianmin,YU Yuzhen,PU Jialiu,et al.Development of a shaking table in electro-hydraulic servo-control centrifuge[J].Chinese Jour-nal of Geotechnical Engineering,2004,26(6):843-845.
[6]濮家骝.土工离心模型试验及其应用的发展趋势[J].岩土工程学报,1996,18(5):92-94.PU Jialiu.Geotechnical centrifuge model testand development of application.[J].Chinese Journal of Geotechnical Engineering.1996,18(5):92-94.
[7]包承纲,饶锡保.土工离心模型的试验原理[J].长江科学院院报,1998,15(2):1-7.BAO Chenggang,RAO Xibao.Principle of the geotechnical centrifuge model test[J].Journal of Yangtze River Scientific Research Institute.1998,15(2):1-7.
[8]Zeng X,Wu J,Young B A.Influence of viscous fluids on properties of sand[J].Geotechnical Testing Journal.1998,21(1):45-51.
[9]Wilson D W,Boulanger R W,Kutter B L,Abghari A.Dynamic centrifuge tests of pile-supported structures in liquefiable sand[C].NationalSeismic Conference on Bridges and Highways.1995
[10]Ohtani K,Ogawa N,Katayama T,Shibata H.Project“E-Defense”–introduction of E-Defense[C].PCEE.2003.
[11]Ashford S A,Juirnarongrit T.Performance of lifelines subjected to lateral spreading[R].Pacific Earthquake Engineering Research Center.2006.
[12]Daniel W WILSON,Ross W BOULANGER,Xin FENG,et al.The NEES geotechnical centrifuge at UC davis[C].13WCEE,Canada,2004.
[13]Matsuo Osamu,Tsutsumi Tatsuya,Okamura Mitsu,et al.Development and operation of large centrifuge at PWRI[C].NIST,U.S.,1998.
[14]Kutter B L,Li X S,Sluis W et al.Performance and instrumentation of the large centrifuge at Davis[C].Proc.Centrifuge,1991.
[15]杜延龄.大型土工离心机基本设计原则[J].岩土工程学报,1993,15(6):10-17.DU Yanling.Fundamental design principles of large geotechnical centrifuge[J].Chinese Journal of Geotechnical Engineering.1993,15(6):10-17.
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