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| 地基弹性参数对于长型大截面地下结构横向自由振动的影响 | |
| 引用本文： | 戚承志,陈灿寿,陈国兴,杨秀仁,陈剑杰.地基弹性参数对于长型大截面地下结构横向自由振动的影响[J].防灾减灾工程学报,2011,31(6):622-626. |
| 作者姓名： | 戚承志 陈灿寿 陈国兴 杨秀仁 陈剑杰 |
| 作者单位： | 1. 北京建筑工程学院北京市工程结构与新材料工程研究中心,北京,100044 2. 解放军理工大学工程兵工程学院,南京,210007 3. 南京工业大学岩土工程研究所,南京,210009 4. 北京城建设计研究总院有限责任公司,北京,100037 |
| 基金项目： | 北京市教委重点项目及北京市自然基金，国家自然科学基金，国家973重大项目 |
| 摘 要： | 自由振动分析是地下结构地震动力响应分析的基础.本文利用笔者先前得到的长型地下结构的自由振动方程,研究了地基弹性参数对地下结构自由振动的影响.由分析可以看出,随着地基弹性参数值的增加,结构中波速值总的趋势是增加,但是温克尔地基参数对结构中波速的影响远大于第二地基参数的影响;地下结构振动频率总的趋势是随着温克尔地基参数(k... |
| 关 键 词： | 长型大截面地下结构 自由振动 双参数地基模型 |
Effect of Soil Elastic Parameters on Lateral Free Vibration of Long Large Cross-section Underground Structure |
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| QI Cheng-zhi,CHEN Can-shou,CHEN Guo-xing,YANG Xiu-ren,CHEN Jian-jie.Effect of Soil Elastic Parameters on Lateral Free Vibration of Long Large Cross-section Underground Structure[J].Journal of Disaster Prevent and Mitigation Eng,2011,31(6):622-626. | |
| Authors: | QI Cheng-zhi CHEN Can-shou CHEN Guo-xing YANG Xiu-ren CHEN Jian-jie |
| Institution: | 1.Beijing Research Center of Engineering Structures and New Materials,Beijing University of Civil Engineering and Architecture,Beijing 100044,China; 2.Engineering Institute of Corps of Engineers,PLA University of Science and Technology,Nanjing 210007,China; 3.Institute of Geotechnical Engineering,Nanjing University of Technology,Nanjing 210009,China; 4.Beijing Urban Engineering Design & Research Institute Co,Ltd,Beijing 100037,China) |
| Abstract: | Free vibration analysis is the foundation of dynamic seismic analysis for underground structures. The effect of soil elastic parameters on the free vibration of long large cross section underground structure is studied on the basis of the vibration equation of linear underground structures derived by the authors previously.Parameter study shows that in general wave propagation velocities in the structure increase with soil elastic parameters.But the influence of Winkler’s parameter k is significant,while the effect of the second soil elastic parameter gP is insignificant.Free vibration frequency of underground structure increases with relative wave number and soil elastic parameters.Differing from the influence of soil elastic parameters on wave propagation velocities,the influences of soil elastic parameters k and gP on vibration frequency of underground structure have the same order,therefore the influence of the second soil parameter gP on free vibration of underground structure should not be neglected. |
| Keywords: | long large cross-section underground structure free vibration double-parameter soil model |
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