Structural Elements Strengthening, Replacement or Addition, Strengthening through the Addition of Rods/Lamellae
TUV Academy specialisation program titled “Principles of protection, renovation and structural interventions based on the ELOT EN 1504 guidelines
2nd Course, November 2015
• Stripes, FRP fabrics – Adhesives, Properties, Methods of application • Strengthening of concrete slabs and beams • Shear strengthening • Dimensioning • Calculation example of Carbon Sheets • Confinement of Compression Members and Joints • Replace Existing or Addition of New Reinforcement with GUNITE • Example of Calculation of Carbon Stripes in Slabs
Structural Elements Strengthening, Replacement or Addition, Strengthening through the Addition of Rods/Lamellae
TUV Academy specialisation program titled “Principles of protection, renovation and structural interventions based on the ELOT EN 1504 guidelines
1st Course, June 2014
• Stripes, FRP fabrics – Adhesives, Properties, Methods of application • Strengthening of concrete slabs and beams • Shear strengthening • Calculation example of Carbon Sheets • Confinement of Compression Members and Joints • Replace Existing or Addition of New Reinforcement with GUNITE • Example of Calculation of Carbon Stripes in Slabs
Pilotis Seismic Behavior of Apartment Blocks (Push Over) – Methods of Strengthening
Graduate Paper Presentation
TEI Piraeus, 2012
Increased roof displacement occurs in masonry-free flats on the ground floor (Pilotis) or large openings in the masonry. The maximum possible elastoplastic earthquake displacement is almost proportional to the eigenperiod.
Increased resistance to horizontal loading (eg, earthquake) present apartment buildings with reinforced concrete shear walls, masonry (reinforced or un reinforced) and to a certain extent the structures that have been reinforced by application of jackets to pilotis columns.
Introduction to Eurocode 8
TEI Piraeus, 2011
Basic principles, modern theoretical approaches and comparison with the previous codes. Practical application in reinforced concrete building projects, choice of basic parameters, design criteria, shear walls, ductility limitations, soil characteristics, regularity, compression limitation, confinement, inelastic displacement spectra, pushover, construction details
Introduction to Eurocode 2
TEI Piraeus, 2011
Comparison with the Greek Code – New concepts and theoretical approaches. Practical applications on structural engineering projects. Influence on choosing materials, structural strength and construction details
Examples for the Design and Application of Concrete Building Reinforcement Projects
Seminar of the NTUA (National Technical University of Athens) titled “Design and Construction of Pre-seismic reinforcement”
21 January 2010
• Shear Wall estimation based on earthquake displacement • Shear Wall estimation based on reinforcement percentage (resistance) • Preliminary design of shear walls in a new building • Estimation of damages with the Push Over method • Strengthening of existing building with new shear walls • Calculation of plastic rotation with steel hardening • Calculation of plastic hinge length and rotation • Influence of the variation of the shear ratio on the plastic rotation • Influence of the variation of the shear ratio in the length of plastic hinge • Strengthening of footing by under excavation • Foundation of new cores by slab on ground • Embedment of columns and beams in the new core • Embedment of existing footings in the new foundation • Beam embedment in new shear wall, slab perforation • Embedment of two adjacent columns and a beam into a new shear wall • Connection of a new elevator core with the story diaphragms • Strengthening with cores grounded in two basements • Strengthening of basement roof diaphragm • New core foundation and connection to basement wall
Foundations
Basic Training for STATIK-5H, CEDRUS-5H – Unit 2
2008
• Foundation with separate footings and connection beams
• Foundation with separate footings and Foundation beams
• Founded with mat foundation of varying thickness
Designing and Reinforcing Slabs
Basic Training for STATIK-5H, CEDRUS-5H – Unit 1
2008
The design of reinforced concrete slabs, the simulation, the calculation, the dimensioning and reinforcing are aimed at functionality, safety and economy. Functionality is related to architecture, as well as ease of passage of installations, security by meeting the regulations in terms of operation and failure, economy with material expense and ease of manufacture. Four classic cases of reinforced concrete slabs will be investigated together with the diaphragm beams, because slabs and beams work together statically as a structural element and should therefore be modeled respectively. This is achieved through CEDRUS and STATIK in the best way, since CEDRUS works with surface finite elements, which also have the ability to integrate the beams into the same model.
Elastic-Plastic Analysis based on Displacements. The Push Over Method
Seminar on the ductility and fracture of reinforced concrete structural members
Park Hotel, May 2007
The first part covers the elastoplastic response of the single degree of freedom oscillator. The calculation of the maximum probable displacement of the oscillator is based either on the empirical method of the displacement coefficient or on the capacity spectrum method derived from the hysteretic damping of the system. The results are compared with those of the timehistory analysis of earthquake recordings of the last twenty years in Greece. For stiff, low strength structures, unfavorable soil conditions the results seem to be much higher than the theoretical values therefore improved solutions for practice are proposed. Application of pushover method in multi degree of freedom systems is analyzed followed by a presentation of evaluation strategies, design or redesign of the structure through the increase of stiffness, strength and ductility. Simple relations for the design of earthquake resistant walls are also proposed, suitable for preliminary studies.
Plasticity and Fracture of Reinforced Concrete Structural Members
Seminar on the ductility and fracture of reinforced concrete structural members
Park Hotel, May 2007
This part covers inelastic deformation and fracture mechanisms of concrete and the effect of confinement in the increase of ductility. The effect of brittle failure under compression and shear is examined as an result of concentration of inelastic deformations. Simple models for confinement, bending and shear are presented where various shear transfer mechanisms are analyzed. Examples for brittle failure of short columns are solved, plastic rotation is calculated and as a final point brittle failure of slabs under punching shear is modeled.