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| Numerical simulation of crowd excitation and dynamic interaction with structure |
| Received:May 20, 2009 Revised:December 24, 2009 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201101010 |
| KeyWord:human walking beam-slab structure human body dynamic model dynamic coupling equations crowd multiplication factor |
| Author | Institution |
| 何浩祥 |
北京工业大学 工程抗震与结构诊治北京市重点实验室,北京 |
| 纪金豹 |
北京工业大学 工程抗震与结构诊治北京市重点实验室,北京 |
| 孔丹丹 |
河北工业大学 土木工程学院, 天津 |
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| Abstract: |
| It is necessary to study the structural vibration induced by crowd excitation and the human comfort in flexible and long-span structures. Crowd excitation is simulated by random method according to normal footfall force curve and other individual factors such as distribution of crowd, step frequency and physiological characteristics. Different methods for computing crowd multiplication factor are compared and improvement advice is presented. A time-varying dynamic crowd model which includes a main uniform parameters and coupling mass is established according to crowd characteristics. The dynamic coupling equations for structure and walking crowd are established and the analytical expression is given. The crowd excitation is determined by random simulation and coupling mass method, the dynamic interaction between crowd and structure is analyzed and compared. The results show that both the methods presented in this paper are comprehensive and accurate. |