Seminars

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

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

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.

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

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

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

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

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.

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.

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.

One day seminar of the Society of Civil Engineers, Municipality of Athens
October 2001
• The influence of soil quality on the spectrum … • The DCM method (FEMA 273/356) applies to soft soils … • Soft floor mechanism is a major cause of collapse … • The final decision on the type and extent of Strengthening can be obtained …

Ministry of Public Works / NGDE / DMEO
April 23-24, 2001
• An example of industrial building – multi-storey building – space truss • Dimensioning of the columns • Selection of the actions for which the dimensioning will take place • Selection of columns, buckling lengths and grouping of cross sections • Dimensioning of trusses • Selection of the actions for which the dimensioning will take place • Choice of trusses, buckling lengths and grouping of cross sections
• Automatic generation and updating of plan views, sections, views and shop drawings in every modification of the spatial model • AutoCAD 14 Design Environment • ARX Object-Oriented Technology (beams, columns, plates, bolts, anchors …) • Joints, connections, welds, frames • Data exchange with STATIK-3 • Bill of quantities, bolt impact tests

Seminar of the Greek Earthquake Planning and Protection Organization (EPPO)
Athens, April 2001
• Non-linear analysis of the building as a space frame by the method of plastic hinges • A bi-linear approximation to the force-displacement curve of the building • Simulation of multi- with single- degree of freedom elastoplastic system – factors ao , Co • Calculation of maximum displacement through time integration of a real earthquake accelerogram (A. Method) • Calculation of maximum displacement through Response Spectrum in Axes of displacements – eigenperiods with a coefficient C1 (B. Method) • Performance controls: Plastic rotations, Shear failures, shear deformation of infill walls, possible collapse …

Seminar of the Greek Ministry of the Environment, Physical Planning and Public Works
Athens, 14-15 March 2001
• Resilience of existing structures against earthquake • Performance analysis for more earthquake levels • Classification criteria for structural performance based on damage • Steps to control the behavior of existing structures • Steps to design new structures based on intended behavior • Seismic Risk Analysis for the assessment of the degree of strengthening • Building strengthening applications by addition of walls and cores

Ministry of Public Works / NGDE / DMEO
December 12, 2000
• Single angle shear connection • Double Angle shear connection • Fin connection with Head plate • Splice • Connecting to a Gusset plate • Beam to column connection • End plate connection • Bidirectional shear connection with head plate-both sides …

Ministry of Public Works / NGDE / DMEO
June 12, 2000
• Displacements (stiffness) • Strength • Ductility (seismic energy absorption capacity) • Avoidance of soft story • Plastic rotations • Shear failure • Compressive failure • Lateral stability • Plastic deformation mechanism • Behavior factor q based on the actual resistance of the individual members and the ductility they possess

Athens-Thessaloniki, 2000
• The recent earthquake of Athens • Dynamic Loads in elastoplastic systems • Implied dynamic movement on the supports • Historical development – Elastic design • Historical Evolution – Capacity Design • Historical Evolution – Push Over • Representation of the spectrum in a Force-Displacement system • Comparison with the Actual Code regarding the Behavior Factor q …

Ministry of Public Works / NGDE / DMEO
June 28-30, 1999
• Stability checks • Sheetpile walls, Soldier pile walls • Retaining Walls • Bridges and Loads • Dimensioning / Checks • Special applications of bridges • Earthquake-Resistant Design

Ministry of Public Works / NGDE / DMEO
May 19, 1999
• An example of industrial building – multi-storey building – space truss • Dimensioning of the columns • Selection of the actions for which the dimensioning will take place • Selection of columns, buckling lengths and grouping of cross sections • Dimensioning of trusses • Selection of the actions for which the dimensioning will take place • Choice of trusses, buckling lengths and grouping of cross sections
• Automatic generation and updating of plan views, sections, views and shop drawings in every modification of the spatial model • AutoCAD 14 Design Environment • ARX Object-Oriented Technology (beams, columns, plates, bolts, anchors …) • Joints, connections, welds, frames • Data exchange with STATIK-3 • Bill of quantities, bolt impact tests

Ministry of Public Works / NGDE / DMEO
December 16, 1998
• Geometry and loads • Modification of the geometry of the model • Definition of structural systems through the subsystems • The design action menu • Characterization of loads • Guidelines on combinations of failure limit states • The menu of seismic actions • Introduction of seismological data and building behavior checks

Ministry of Public Works / NGDE / DMEO
February 11-13, 1998
• Viaduct of multiple spans with Piers of varying height (monolithic connection to the Piers) • Viaduct of multiple spans with Piers of varying height (on elastomeric Bearings) • Frame with side spans • Frame with piles • Box culverts

Exhibition CAD/CAM & COMPUTER GRAPHICS
November 28 – December 1, 1997
• Design of formworks and reinforcements in Acad or MicroStation environment with ARTIFEX
• Antiseismic design and automatic production of reinforced concrete building construction drawings with STATIK-3H / CEDRUS-3B
• Steel Design by STATIK-3S (Stahl) according to Eurocode 3

Exhibition CAD/CAM & COMPUTER GRAPHICS
November 29 – December 2, 1996
• Design of Reinforced Concrete Slabs with the Finite Element Program CEDRUS-3
• Seismic Design based on the New Seismic Code with the Program STATIK-3H
• Design of Reinforced Concrete Bridges with the Program STATIK-3 / FAGUS-3
• Excavation Walls, Retaining Walls, Anchorings and Slope Stability with LARIX-3