|本期目录/Table of Contents|

[1]王宏伟,陈啸,刘斌,等.动力基础频变参数模型及设计[J].建筑科学与工程学报,2008,25(01):55-59.
　WANG Hong-wei,CHEN Xiao,LIU Bin,et al.Frequency Variable Parameters Model and Design of Dynamic Foundations[J].Journal of Architecture and Civil Engineering,2008,25(01):55-59.
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动力基础频变参数模型及设计(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
25卷
期数:
2008年01期
页码:
55-59
栏目:
出版日期:
2008-03-20

文章信息/Info

Title:
Frequency Variable Parameters Model and Design of Dynamic Foundations
作者:
王宏伟，陈啸，刘斌，朱浮声
东北大学资源与土木工程学院,辽宁沈阳110004
Author(s):
WANG Hong-wei, CHEN Xiao, LIU Bin, ZHU Fu-sheng
School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, Liaoning, China
关键词:
动力基础;  频变参数;  半空间;  瞬态振动
Keywords:
dynamic foundation;  frequency variable parameter;  half-space;  transient vibration
分类号:
TU311.3
DOI:
-
文献标志码:
A
摘要:
为了改进现行动力机器基础设计理论模型,结合质量-弹簧-阻尼模型理论和半空间理论的特点,提出了更符合实际的频变参数模型。通过计算推导,获得了该模型的动力解答,进一步分析了模型的特征及其参数的影响; 同时,指出现有质量-弹簧-阻尼定参模型在低频段低估了体系的动力响应,在高频段则过高地估计了体系的动力响应,频变参数模型的谐响反应频率与外扰力频率之间存在的差值不大。最后,针对原设计规范存在的不足,提出大而轻的基础形式是一种更值得推荐的设计方案。该文为动力基础设计规范的改进和完善提供了参考。
Abstract:
In order to improve the theoretical model of the present dynamic machine foundation design, the characteristics of mass-spring-damper model and half-space model theory were combined, and a frequency variable parameters model with more accuracy was advanced. Through computational deduction, the dynamic solutions of the concerned model were obtained, and the model features and parameter effects were further analyzed. Meanwhile, authors pointed out that the dynamic response of the system was underestimated in low frequency domain, while overestimated in high frequency domain by the present mass-spring-damper parameter fixing model. Considering frequency variable parameters model, there existed a little differential value between harmonic response frequency and corresponding external excitation frequency. At last, according to the shortage of original design code, a design scheme with big and light foundations for the dynamic machines was recommended. It provids some feasible references for modification and improvement of the design code.

参考文献/References:

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[7]陈 啸,王宏伟,刘 斌,等.相互作用体系动态参数识别与故障诊断[J].建筑科学与工程学报,2007,24(3):47-50. CHEN Xiao,WANG Hong-wei,LIU Bin,et al.Dynamic Parameter Identification and Fault Diagnosis of Interaction System[J].Journal of Architecture and Civil Engineering,2007,24(3):47-50.

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备注/Memo

备注/Memo:
收稿日期:2008-01-28
基金项目:国家自然科学基金项目(50474018)
作者简介:王宏伟(1968-),男,辽宁沈阳人,工学博士研究生,E-mail:mcx8305@sina.com。
更新日期/Last Update: 2008-03-20