Who wants to work with me to continue applied research on my invention;
These are the first results of applied research from the National Technical University of Greece.
I have no money to continue applied research.
I am looking to find scientific partners.
I did the translation myself.
I hope you UNDERSTAND what I say.
Basics of simulation
Page 5 of 34
This project involves the numerical simulation and investigate the behavior of the system.
Brief description of the invention
The principal object of the hydraulic tie rod for construction projects of the present invention as well as of the method for constructing building structures utilizing the hydraulic tie rod of the present invention is to minimise the aforesaid problems associated with the safety of construction structures in the event of natural phenomena such as earthquakes, hurricanes and very high lateral winds. According to the present invention, this can be achieved by a continuous pre-stressing (pulling) of both the building structure towards the ground and of the ground towards the structure, making these two parts one body like a sandwich. Said pre-stressing is applied by means of the mechanism of the hydraulic tie rod for construction projects. Said mechanism comprises a steel cable crossing freely in the centre the structure's vertical support elements and also the length of a drilling beneath them. Said steel cable's lower end is tied to an anchor-type mechanism that is embedded into the walls of the drilling to prevent it from being uplifted. Said steel cable's top end is tied to a hydraulic pulling mechanism, exerting a continuous uplifting force. The pulling force applied to the steel cable by means of the hydraulic mechanism and the reaction to such pulling from the fixed anchor at the other end of it generate the desired compression in the construction project.
Page 6 of 34
Investigates the behavior of buildings with and without the proposed system in order to draw useful conclusions about the effectiveness
The challenge is the preliminary investigation into the conceptual,
software was chosen Seismostruct v5.2.2 company Seismosoft.
Page 7 of 34
General description of the tested models
Examined two buildings a three-storey and a five-storey
materials of models
1) confined concrete ( conf )
2) non-confined concrete ( une )
3) steel ( rein )
1) confined concrete ( conf ) features
features symbol rate units
compressive strength fc 30 MPa
tensile strength ft 0 MPa
deformation at σ max εc 0,002
parameter toggles kc 1,2
specific weight Yconc 24 kN/m3
Page 8 of 34
http://postimg.org/image/rqu2o0737/
Figure 2 detail reinforcement concrete element.
Distinguished positions confining concrete
http://postimg.org/image/ibs9p3mrx/
Figure 3 diagram Chart - strain (sample) for confined concrete used in the models.
Page 9 of 34
2) non-confined concrete ( une )
features symbol rate units
compressive strength fc 30 MPa
tensile strength ft 0 MPa
deformation at σ max εc 0,002
parameter toggles kc 1
specific weight Yconc 24 kN/m3
http://postimg.org/image/7e8qrdyxt/
Figure 4 diagram Chart - strain (sample) for confined concrete used in the models.
Page 10 of 34
3) steel ( rein )
steel has the following characteristics
features symbol rate units
elasticity parameter Es 200 GPa
yield stress fy 500 MPa
hardening parameter μ 0,005
strain at break εult 0,1
specific weight Y steel 78 kN/m3
http://postimg.org/image/brzb3wrtv/
Figure 5. diagram Chart - strain (sample) steel used in the models.
sections
The cross sections of the models is
1) cross-section column
2) cross-section beam