Learning Module: ASSESSMENT OF REINFORCED CONCRETE COLUMN CAPACITY

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29 Νοε 2013 (πριν από 3 χρόνια και 10 μήνες)

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Learning Module: ASSESSMENT OF


REINFORCED CONCRETE

COLUMN CAPACITY

Nestor Castaneda, Zach

Feinstein

and Shirley J. Dyke

Washington University in St. Louis

(NEESR
-
CABER Project)




Objective

The proposed educational module will focus on

understanding reinforced concrete column (RCC)

behavior under combined loading (Axial


Bending) and

different design assumptions.

The advantage of using this module is that the students will

be able supplement the materials from class with visual

evidence and comparisons between experimental and

numerically calculated results

Description

The present module contains three main

components:



Experimental data

Video and photos from several
experiments on scaled column
specimens tested under bending
and axial pseudo
-
static loads will
be available through this interface.
The experimental data will be
generated using the portable
Loading and Boundary Condition
Box (LBCB) placed at UIUC


Description

Design spreadsheet


The student will assess the

axial and bending resisting

capacities offered by the

column





An additional document will be provided along with the
proposed interface to provide students with a reference on
concrete column design, types of failures and general
instructions to use the excel spreadsheet.



Description


Analysis


The student will also be able to numerically calculate


the corresponding forces associated with an imposed


relative displacement between column ends. With this


tool the student can calculate the expected relative


displacement to produce forces which will exceed the


capacity of the section.

Learning steps…..


Compare the numerically calculated forces and the
experimental forces which produce an specific failure
state.


Determine what kind of failure occurred in the
specimen (compression or tension failure),
depending on the steel reinforcement ratio and the
eccentricity of the applied loads.


Propose sections with a design that ensures a ductile
failure (yielding of the steel in the tension side) under
a prescribed eccentricity of applied loads and steel
reinforcement.


Module Interface

Future Plans



Improvement of the design tool by adding shear capacity
assessment


A complete module, including lecture materials,
homework assignments will be also developed.


Experimental data obtained in partnership with MUST
-
SIM facility will be integrated into these module.


Feedback will be required to improve the module before
its release (we need users to implement this).