course no.: ce 511 mamun miah graduate student dept. of
TRANSCRIPT
Course No.: CE 511
Mamun Miah
Graduate Student
Dept. of Civil Engineering
Objectives To find the frequencies of a bent-pile system using
SAP2000
To see the mode shapes of the system in SAP2000
Motivation As a graduate student I have found my research interest in
earthquake engineering
Currently, I am working on the investigation of I-55, US 78 bridges (a MEMA Project) to see the adequacy of structural soundness during an earthquake of around 7.0 moment magnitude
This presentation is a part of that project which satisfies both my course requirement and research goal
Bent-Pile System Pile Cap
Piles
I-55 Intermediate Bent System
Defining Section Properties in SAP2000
Pile Cap Section Pile Section
Joint Restraints Assignment
Load Patterns and Assignments
Display of Joint Loads Lateral Load Dead Load
Analysis
Deformed Shape
Lateral Load Dead Load
Comb1= dead+lateral+live Modal
Reactions, Shears, and Moments
Modal Periods And Frequencies
Mode Shapes Mode 1 Mode 2
Mode 3 Mode 4
Mode Shapes (More)
Mode 5 Mode 6
Mode 7 Mode 8
Conclusions The mode shapes showed large compression and
tension in the pile cap. In reality this is too stiff to be compressed or stretched like that.
The analysis is done in 2D whereas it should be done in 3D.