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Re: seismic design of cut&covers

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We use "consistent deformation method" (I don't know the correct name of the
method), which require the underground box culvert able to resist a shear
deformation angle r=Vmax/Cs.
Vmax= peak velocity of ground motion
Cs= seismic shear wave velocity of soil
Recent design procedures require engineers to consider the soil-structure
interaction.

Calvin Chang

----- Original Message -----
From: sigalasi <sigalasi(--nospam--at)central.ntua.gr>
To: <seaint(--nospam--at)seaint.org>
Sent: Saturday, March 24, 2001 12:51 PM
Subject: seismic design of cut&covers


appreciate any info on code recommended procedures or literature

on seismic design of subways constructed by cut&cover particularly

for fill heights more than 50% of subway total height

regards

j.n.sigalas