What new I brought to the construction that can't be questioned by anyone
The earthquake imposes a force on the structure and the structure resists that force with the cross-sections of the load-bearing elements.
The cross sections of the beam plates and wall and column sections have some strength and then they break. If we increase the cross sections and reinforcement to increase the strength of the structure without the earthquake being stronger, the seismic loads also increase because they are tied to the mass of the structure. Greater mass = greater loads with the same acceleration.
Conclusion. The structure is saturated with reinforcement and concrete and that's the limit of its strength. No more.
This strength that the structure currently has only responds to small earthquakes and medium earthquakes with some post-earthquake damage repairs. No structure in the world can withstand very large earthquakes.
And I come to the civil engineers and say.
If you increase reinforcement and concrete to increase strength it is futile because it increases along with strength and seismic loads.
You have to increase the strength without increasing the mass.
And I give them two solutions not one to increase strength without increasing mass.
First solution. We take force from the ground, that is an external force, which has no mass because it comes from the ground and we use it to help the cross sections additively 1+1=2 to cope with the earthquake.
Second solution. In the earthquake 30% of the cross section of the concrete wall is active. The other 70% is inert, offers nothing and only does nothing but increase as a mass the earthquake forces. If we apply prestressing the whole concrete cross section becomes active and contributes to the earthquake without increasing inertia.
Dear Ioannis Lymperis. Watch a video of a building collapsing under low-amplitude vibration. Unfortunately, I only have the slide from the presentation. The jackhammer started working and the unfinished (new) multi-story building collapsed. Have you forgotten about the resonance effect? It is resonance that destroys engineering structures during an earthquake.
Dear Dr. Borys Kapochkin
If I am correct, resonance is a phenomenon that when the frequency of the ground matches the natural frequency of the building we have resonance.
At resonance the building has the maximum possible amplitude of oscillation and the maximum possible energy. If there are no damping forces, then the amplitude of the oscillation becomes theoretically infinite. Thus, the oscillation can become so intense that the building can be destroyed.
The seismic design method I propose involves compressing the wall faces and compacting them into the ground using ground anchoring mechanisms placed in boreholes, which are filled with concrete grout.
This means that an external force, without mass, coming from the ground, controls the sway of the building Basically it controls the overturning moment of the walls and increases their stiffness, factors that deform and break the beams.
When there is control over the deformation of the building, in each seismic loading cycle, coming from the earth's force, then there is no resonance in the building.
Dear Ioannis Lymperis. How do you solve the problem of plastic geodeformations of the Earth's surface, which are caused by "slow" earthquakes? Watch a video of these geodynamic movements.
video from internet/
Dear Dr. Borys Kapochkin
I construct an elastic building frame with horizontal seismic insulation, with columns, and inside or around the elastic frame I place one or more independent rigid beams with compressive cross-sections and connected to the ground Between these two structures I place seismic joints at the height of the diaphragms.
To prevent the foundation soil from subsiding due to soil liquefaction and the loss of the building's footing, I pre-compact the soil with the anchoring mechanism. I apply prestressing from the surface of the foundation soil, twice the calculation loads, before the building is constructed.
This pre-compaction pre-compacts the foundation soil in two directions the horizontal and the vertical.
Watch a video
https://www.youtube.com/watch?v=zhkUlxC6IK4&t=6s
https://www.youtube.com/watch?v=IO6MxxH0lMU
Dear Dr. Samy Elhadi Oussadou
I would like to add the following to your correct observations in the seismic planning I am proposing
It all changes in seismic design.
In the field of seismic design, there has been a major change in thinking. Instead of simply adding more mass and reinforcement, which paradoxically increases seismic loads, four innovative solutions are coming to the fore.
The first harnesses external forces from the ground, combining them with structural elements to respond more effectively to earthquakes.
The second uses prestressing to harness the full potential of concrete wall sections, enhancing their strength without adding extra weight which increases inertia and moments.
Thirdly, the bearing soil is strengthened by pre-compaction in the horizontal and vertical directions, while simultaneously pre-controlling the composition in the inhomogeneous foundation soil with samples collected from the drilling of boreholes.
Fourth We now control the construction ground resonance since we are able to mitigate by controlling the displacement in each seismic loading cycle.
This new approach emphasizes intelligent design and optimization against absolute volume, and deformation control measure so that the structure always rocks, within the elastic displacement range, regardless of the acceleration magnitude and duration of the seismic event.
Placing the system on longitudinal reinforced concrete walls, such as prefabricated houses, increases the efficiency of the method, increases the number of floors and lowers the cost of construction, since prefabricated houses are 30 to 50% cheaper because they are industrialized.
All of this is achieved by the footing on the ground and prestressing of all the wall faces.
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