uspto. gov Grant 1 από seismic http://patft1.uspto.gov/netacgi/nph-Par ... PN/9540783 Ιs it possible to control the lateral torsional buckling over the body of bearing elements? In an earthquake, the columns lose their eccentricity and their bases are lifted, creating twisting in all of the nodes of the structure. There is a limit to the eccentricity, that is, there is a limit to the surface area of the base which is lifted by the rollover moment. To minimize the twisting of the bases, we place strong foot girders in the columns. In the large longitudinal columns (walls), due to the large moments which occur during an earthquake, it is practically impossible to prevent rotation with the classical way of construction of the foot girders. It is a method that uses a mechanism to pontoon nodes of higher level of constructions with earth and which dynamically deflect the lateral load of the earthquake through the vertical support elements and directs them into the ground controlling in this way the oscillation of the construction which causes torsional flexural buckling responsible for structural failures on the trunks of bearing elements. The reaction of the mechanism to the raising of the roof of the longitudinal column and the opposing reaction of the at the bottom part of the base, divert the lateral load of the earthquake in the strong vertical section. With this diversion of the lateral load of the earthquake to the vertical columns, the twisting of the nodes is abolished because the lateral loadings of the earthquake are 100 per cent borne along the length of the columns, so it is impossible for them to twist in their main sections. Τελευταία επεξεργασία από το μέλος seismic την Τετ 18 Ιαν 2017, 4:44 pm, έχει επεξεργασθεί 1 φορά συνολικά.