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| 机车荷载下多年冻土区桥梁桩基振动响应特征 | |
| 引用本文： | 霍元坤,吴志坚,陈拓,马巍.机车荷载下多年冻土区桥梁桩基振动响应特征[J].冰川冻土,2011,33(4):908-913. |
| 作者姓名： | 霍元坤 吴志坚 陈拓 马巍 |
| 作者单位： | 1. 兰州交通大学土木工程学院,甘肃兰州730070／中国地震局兰州地震研究所黄土地震工程开放实验室,甘肃兰州730000 2. 中国地震局兰州地震研究所黄土地震工程开放实验室,甘肃兰州730000／中国地震局黄土地震工程开放实验室,甘肃兰州730000 3. 中国地震局兰州地震研究所黄土地震工程开放实验室,甘肃兰州,730000 4. 中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,甘肃兰州,730000 |
| 基金项目： | 国家自然科学基金项目(40902094); 中国地震局地震预测研究所基本科研业务费项目(2010A76); 中国科学院西部行动计划(二期)项目(KZCX2-XB2-10),中国科学院冻土工程国家重点实验室开放基金项目(SKLFSE200801)资助 |
| 摘 要： | 为研究多年冻土区机车振动荷载作用下桥梁桩基的动力响应特征，选取了多年冻土区清水河特大桥的两个桥梁桩基进行现场强震动测试．对测试数据进行加速度响应及傅里叶谱响应分析，得出桥梁桩基的振动响应衰减规律及振动能量的分布规律．在此基础上，结合有限元结构分析软件，运用瞬态动力分析法，选取一个测试桩为实例进行二维动力响应的数值计算，... |
| 关 键 词： | 青藏铁路 桥梁 振动传递 动力响应 |
Characteristics of Vibration Response of Bridge Pile Foundation in Permafrost Regions under Locomotive Loading |
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| HUO Yuan-kun,WU Zhi-jian,CHEN Tuo,MA Wei.Characteristics of Vibration Response of Bridge Pile Foundation in Permafrost Regions under Locomotive Loading[J].Journal of Glaciology and Geocryology,2011,33(4):908-913. | |
| Authors: | HUO Yuan-kun WU Zhi-jian CHEN Tuo MA Wei |
| Institution: | HUO Yuan-kun1,2,WU Zhi-jian2,3,CHEN Tuo2,MA Wei4(1.School of Civil Engineering,Lanzhou Jiaotong University,Lanzhou Gansu 730070,China,2.Key Laboratory of LoessEarthquake Engineering,Lanzhou Institute of Seismology,China Eathquake Adminstration,Lanzhou Gansu 730000,3.Lanzhou Base of Institute of Earthquake Science,CEA,4.State Key Laboratory ofFrozen Soil Engineering,Cold and Arid Regions Environmental and Engineering Institute,Chinese Academy of Sciences,... |
| Abstract: | In order to obtain the dynamic response characteristics of bridge pile foundation in permafrost regions under the effect of train vibration loading,strong vibration tests were carried out at two bridge pile foundations across the Qingshuihe River in permafrost region.The attenuation function of vibration response and the vibration energy distribution of the bridge pile foundation were obtained by analyzing the response of acceleration and response of Fourier Spectrum from the test data.On these in-situ test... |
| Keywords: | Qinghai-Tibet Railway bridge vibration transmission dynamic response |
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