New Three-dimension Isolation Pier Vertical Vibration Table Test and Numerical Analysis(PDF)
《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]
- Issue:
- 2018年02期
- Page:
- 30-37
- Research Field:
- Publishing date:
Info
- Title:
- New Three-dimension Isolation Pier Vertical Vibration Table Test and Numerical Analysis
- Author(s):
- SHANG Shou-ping; CAO Yong; CUI Xiang-long
- College of Civil Engineering, Hunan University
- Keywords:
- three-dimension isolation pier; vibration table test; vibration isolation effect; analysis of internal force; vertical seismic
- PACS:
- -
- DOI:
- -
- Abstract:
- A new kind of three-dimension isolation pier in the unit of vertical cylinder helix compression spring was studied. The structure and the operation principle of the isolation pier were introduced. The vertical and horizontal rigidities of the three-dimension isolation pier were determined through static test, and the three-dimension pier’s isolation effect was studied by vibrating table test. What’s more, the VB computer program was used to do the numerical analysis for the qualitative research of the three-dimension pier. On the basis of the acceleration time-history analysis, the internal forces of the beam end under the unidirectional and bidirectional seismic waves were analyzed. The results of vibrating table test show that three-dimensional isolation pier’s horizontal and vertical isolation coefficients are less than 0.4, proving that the three-dimension isolation has a good vibration isolation effect. The results of numerical analysis show that the three-dimension isolation pier’s isolation coefficient is less than 0.4 under unidirectional seismic wave, while its isolation coefficient is less than 0.6 under bidirectional seismic wave, which indicates that the three-dimension pier has a good isolation effect. Meanwhile, the results of internal force analysis show that the vertical seismic action’s effect should not be neglected. With simple structure as well as good effects, this new three-dimension isolation pier is suitable for the rural areas.
Last Update: 2018-04-04