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Improving Raft Fixing Technique
Liang xiang-dong
2011, 31 (5):
178-180.
DOI: 10.3969/j.issn.1006-1355-2011.05.042
The raft is a kind of effective vibration isolators. Recently, the rafts with larger and larger sizes have been developed and produced. Because of the large size of the raft, location change of the supports of the raft frame will leads to large deflection, and there will be different shapes of fixing surface corresponding to the different distributions of supports. If the raft were installed according to its altitude only, the change of deflection of the fixing surface would cause the difference between actual loads and the design loads of the isolators. In order to confirm the efficiency of isolators, the cause of the load error is analyzed and some suggestions for improving the raft fixing technique are proposed.
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