The tipping torque is balanced by one or more stability torques.
The tensile force in the cross section is neutralized by a compressive force.
A cutting force cuts the cross section but is neutralized when the cross section is under compression.
A small square cross section located on a high trunk bends easily.
A large cross-shaped cross section bends slightly.
A large cross-shaped cross section becomes almost completely rigid when we apply pressure to the cross section.
These are given laws of engineering.
The walls of the construction in the big earthquake, receive torques which often exceed three times the weight of the construction.
The walls and beams that are joined together at the nodes, receive torques (M), upright forces (N) (compressive and tensile) which cause bending, and shear (Q)
Civil engineers studying the response of the structure to seismic shifts had to apply compression to the wall cross-sections to increase their ability to withstand shear forces, bending forces, tensile forces, and prevent shear forces. failure of the coating concrete, which occurs due to the ultra-tensile strength of the steel.
I do not understand why civil engineers do not include in the study the imposition of compressive loads on the cross sections of the walls.
The high walls are high-lever arms that would tip over if they did not have the beams (with which they are attached to the joints) to hold them, and connect them to the other elements of the structure.
The beams have a resistance to bending which, if overcome, will break.
The lateral force of inertia creates the moment of inversion on the walls, while the beams react with opposite direction of momentum, in order to achieve balance.
If the overturning torque of the wall is greater than the reverse torque applied by the beam, then the beam will break.
1 + 1 = 2 If the opposite moments of the beams are not sufficient in large earthquakes, we can reinforce them with additional opposite moments, (derived from external factors) so that the sum of the opposite moments of the beam and the external factor is greater than torque of the wall, in order to achieve the desired balance of forces.
The second opposite moment of stability to the moment of inversion of the wall could come if we pressed the sides of the walls from their highest level with the ground.
I do not understand why civil engineers do not include the anchoring of the walls with the foundation soil in their studies.
I ask the same question too, dear RG colleague Ioannis Lymperis.
Let us see what other researchers say about it. Best wishes
Strength & Conduct of Reinforced Concrete Corner Joint under Negative Moment Effect
The quality of the stability is determined by how large a disturbance the body can withstand before the balance is lost. A body that is precariously balanced can withstand only a small disturbance and so has low stability. A body that is solidly balanced can be disturbed greatly and so has high stability.
http://physics.oregonstate.edu › ...PDF
Key Physics Concepts Related to Balance
The more stable the base of the movement, the more force we can generate off this base. Generally more force means better performance. This means you can lift more, run faster, kick harder, hit further or swing faster. Having a more stable base of movement also means less force is 'lost' in the kinetic chain.Mar 5, 2019
https://www.southpenrithphysio.com.au › ...
Balance and Stability. What is the difference? - Physio Inq South ...
Balance and stability work as one to ensure that athletes can control their bodies during a particular movement. Arms and legs fly everywhere, but still the movement seems smooth because of their ability to maintain balance while adjusting the shot in mid-air. ...
http://thesportdigest.com › article
Balance and Stability | The Sport Digest
Dear Faraed Salman
A wall anchored to the ground with deep anchors and piles and having compressive stresses in cross section is not statically different from the cantilever of a prestressed bridge. Anchoring to the ground is an external force that I transfer to the structure with tendons to increase the response to the seismic displacements.
The experiment speaks for itself.
https://www.youtube.com/watch?v=zhkUlxC6IK4&t=11s
If you put an athlete standing in a bus and the bus starts or brakes then the athlete will be overturned. The screwed seats of the bus will follow the movement of the bus.
Please, see the following useful link:
https://www.khanacademy.org/science/physics/forces-newtons-laws/newtons-laws-of-motion/a/what-is-newtons-third-law
Dear Jose Roberto Rasi
If you screw something on a rock you create an anchoring which does not allow any displacement.
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