Measurement and Analysis for Friction Coefficients of Rubber and Steel Plates in Dynamic Motion
碩士 === 國立高雄第一科技大學 === 營建工程所 === 94 === Rubber bearing pads have been used extensively in local bridges, some of which had their decks fall off during severe earthquakes. Design codes used to provide some reference values for the friction coefficient of rubber pads sliding against steel plates, which...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2006
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| Online Access: | http://ndltd.ncl.edu.tw/handle/75484033587071165279 |
| Summary: | 碩士 === 國立高雄第一科技大學 === 營建工程所 === 94 === Rubber bearing pads have been used extensively in local bridges,
some of which had their decks fall off during severe earthquakes.
Design codes used to provide some reference values for the friction
coefficient of rubber pads sliding against steel plates, which were
found unsafe as compared to the results from recent tests based on
quasi-static cyclic loads. The study here adopts dynamic load tests
on a series of rubber pads, in addition to the conventional static load
tests. The input waves from a light shaker and motions of the
pad-weight assembly are recorded and then sent to a numerical
model simulation code written for analyzing mass-spring dynamic
models. The friction coefficients are identified (back-calculated)
from the simulations. For the studied samples where the rubber
sliding against the steel plate, the test results confirm that the code
values are on the low side. The results indicate normal force on
rubbers has an influence on the friction coefficient during the
sliding motions. Separate tests on samples made of cork pad-weight
assembly also verify such cases.
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