000011722 001__ 11722
000011722 005__ 20141205155939.0
000011722 04107 $$aeng
000011722 046__ $$k2008-10-12
000011722 100__ $$aSreekala, R.
000011722 24500 $$aPre Defined Plastic Hinges with Ductile Composites-Conceptual Approach to Aseismic Design

000011722 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011722 260__ $$b
000011722 506__ $$arestricted
000011722 520__ $$2eng$$aReplacement of normal concrete with ductile composites at plastic hinge locations is an idea, which can be well thought for in the conceptual approach to structural design. A simple experimental investigation was carried out to establish this concept. The ability of the structure to sustain levels of inelastic deformation implicit in ductility values is dependent on the material and detailing used. Concrete, which is inherently brittle and weak in tension, were modified by incorporating polymeric materials like natural rubber latex and steel fibers. This improves ductility; strain at peak load and energy absorption capability. The paper highlights the importance of selection of a suitable ductile composite, incorporating it into the predefined locations, for better seismic performance. The validity of the scheme is proved by a couple of experiments including the stress- strain characteristics of the material as they play a significant role in ductile response of structural elements. Three point bending tests were conducted on four types reinforced concrete beams with different concrete matrixes at the central region and high strength concrete at other regions. As Ductility and damage modeling of structural components plays an important role in achieving the performance objectives, they have been quantified using the experimental data by suitable methods. Damage index evaluation was done using one of the well-known damage models, which takes into account the hysteretic energy dissipation along with ductility. A response factor directly related to the damage index is found out in order to get the major design variable displacement ductility, thus helping the design stage calculations.

000011722 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011722 653__ $$aDuctility, Plastic hinge, Stress-Strain Behaviour, Energy dissipation, Damage Index 

000011722 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011722 720__ $$aSreekala, R.$$iLakshmanan, N.$$iMuthumani, K.$$iPrasad, A. Mehr$$iGopalakrishnan, N.$$iKumar, K.Sathish
000011722 8560_ $$ffischerc@itam.cas.cz
000011722 8564_ $$s844962$$uhttps://invenio.itam.cas.cz/record/11722/files/05-03-0243.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-03-0243.
000011722 962__ $$r9324
000011722 980__ $$aPAPER