Browse Prior Art Database

Platform-Supported Equipment Protection From Seismic Shocks

IP.com Disclosure Number: IPCOM000046284D
Original Publication Date: 1983-Jun-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 60K

Publishing Venue

IBM

Related People

Chang, I: AUTHOR [+2]

Abstract

A raised platform structure is described which is adapted to accommodate seismic shocks without requiring special adaptation according to the dead loads of computer and other equipment installed on the platform.

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Platform-Supported Equipment Protection From Seismic Shocks

A raised platform structure is described which is adapted to accommodate seismic shocks without requiring special adaptation according to the dead loads of computer and other equipment installed on the platform.

Platform l is resiliently supported on a 3 x 3 matrix of nine coil springs and respective associated damping devices. The central spring A is under some compression, taking all initial dead load and up to a preselected percentage of the maximum anticipated live load. Springs B, C, D and E are normally fully extended and normally not under compression, each being capable of absorbing a different percentage of the maximum live load. Thus, as the load on the raised platform increases, springs B, then C, then D, and finally E will be successively compressed.

To prevent lateral shifting, the platform is secured by four horizontal springs 2 that are anchored to fixed floor 3. To prevent the platform 1 from responding with spring action to persons walking thereon or other relatively light loads, the platform bears upon steel rods (not shown) within the modules that contain springs A-E. The platform is released from these steel rods by a spring trigger (not shown) under the impact of a vertical shock, whereupon the platform's weight and the load thereon is transferred to the coiled springs A-E and associated damping devices.

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