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[转]Successful Demonstration of New Isolated Bridge System at UCB Shaking Table  

2010-12-15 14:09:23|  分类: 结构抗震 |  标签: |举报 |字号 订阅

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Successful Demonstration of New Isolated Bridge System at UCB Shaking Table

引自:http://peer.berkeley.edu/events/2010/5-26-10_bridge_test/bridge_test_ucb.html


On May 26, 2010 over 100 engineers, researchers, media representatives and members of the public were on hand to witness the demonstration of a new isolated bridge system at the PEER Earthquake Simulator Laboratory at UC Berkeley’s Richmond Field Station. The bridge was subjected to various ground motion records and varying intensity levels including the 1985 Liollio Chile record, the 1995 Kobe Japan JMA record, the 1978 Tobas Iran record and the 1994 Sylmar Northridge record, The bridge performed as expected without damage and the train that had been placed on the bridge deck was still fully operational after the earthquake and was able to slide easily on its rails. 

In this new bridge system, all three bridge segments are supported using seismic isolators and utilize the new Segmental Displacement Control Isolation System, which was being tested for the first time. In this approach, the movement of the three isolated bridge segments is constrained so that the bridge’s road centerline remains continuous without residual offsets thus improving driver safety, minimizing the need to realign the different segments following and earthquake, and minimizing damage to the joints provided between segments along the bridge. This is achieved using special lockup guides between the bridge segments, triple pendulum isolators above the bridge column bents, and linear isolation bearings at the ends of the bridge.

Photo Gallery.


很震撼的桥梁隔震系统的振动台试验。可点击观看上述照片集。
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