Phrasing a question – find the answer

!! Q1a: Can we use simulated ground motions for

Nonlinear Seismic Response History Procedures

(Chapter 16.1 of ASCE 7-10)?

"! Three or Seven records are needed.

"! “Ground motions shall be scaled such that the average

value of the 5% damped response spectra for suite of

ground motions is not less than the design response

spectrum for the site for periods ranging between 0.2T

to 1.5T where T is the natural period of the structure”

"! Maximum force response (elements) and IDRs as EDPs

if three records are used. Average of force response

(elements) and IDRs as EDPs if seven records are used

•!2D (3D ?) •!MDOFs? (Steel Bldgs.)

•!High Seismic (Dmax) •!Regular (Irregular ?)

Type I Validation (20-story Building)

T!3.6

Type II Validation

!! Q2a: Are simulations for historic events similar to

actual recordings?

Galasso C., Zareian F., Iervolino I., Graves R.W. 2012. Validation of Ground Motion Simulations for Historical Events using SDOF Systems. BSSA. 102(6), 2727-2740.

Type II Validation: SDOF - Inelastic

Galasso C., Zhong P., Zareian F., Iervolino I., Graves R.W. 2013. Validation of Ground Motion Simulations for Historical Events using Generalized Linear MDOF Systems. Earthquake Engineering and Structural Dynamics. 42(9), 1395–1412.

Type II Validation: MDOF - Elastic

Thank you