RU2130535C1 - Vacuum wall in trench such as around epicenter of probable earthquakes for dampening elastic vibrations and acoustic waves - Google Patents

Abstract

FIELD: construction engineering. SUBSTANCE: invention relates to ensuring stability of buildings and structures at earthquakes. Restricted effect of elastic vibrations is achieved by their dampening by means of vacuum wall. This limitation is checked by seismographs located at both sides of aforesaid wall. Restricting wall is assembled of protective screens having vacuum spaces which are made in the form of ball shells. Protective screens are glued up of separate hemispheres which are stamped from sheet plastic material possessing thermochemical acid-resistant properties. Screens are installed one against other on sand pad in trench for example in two rows with displacement of one screen relative to other in height and length by half of ball shell diameter, and covered with sand. Trench and vacuum wall are arranged in the form of horseshoe around for example predicted and recorded on maps epicenters of earthquakes or around separate building or structure at optimal close distance irrespective of predicted intensity of earthquakes. Vacuum wall is installed in trench vertically or at incline to plane that is facing epicenter against probable direction of elastic vibrations. Seismographs are installed in zone of their supposed action and at external and internal sides of vacuum wall. EFFECT: higher efficiency. 2 dwg

Description

 The invention relates to the field of construction, in particular to ensure the sustainability of buildings and structures during an earthquake.

 The closest analogue of the claimed invention is a device containing a trench and a wall located therein of elements for damping elastic vibrations with vacuum cavities (RU 2039862, E 02 D 31/08, 20.07.95).

 The objective of the invention is to limit the action of elastic oscillations during an earthquake by quenching them using a vacuum wall, and the restriction is controlled by seismographs installed on both sides of this wall.

 This problem is solved due to the fact that in a device containing a trench and a wall located in it from elements for damping elastic vibrations during an earthquake with vacuum cavities, the wall is composed of protective screens, the vacuum cavities of which are made in the form of spherical shells. Protective screens are glued from hemispheres stamped from a sheet of thermochemical-resistant plastic. The screens are installed one opposite the other on a sand cushion in a trench, for example, in two rows with one screen offset relative to the other in height and length by half the diameter of the spherical shell, and covered with sand. The trench and the vacuum wall are made in the form of a horseshoe around, for example, predicted and recorded on the maps epicenters of earthquakes and a separate building and structure, at an optimally close distance, regardless of the predicted magnitude or magnitude of predicted earthquakes. At the same time, the vacuum wall is installed vertically or obliquely in the trench, with the plane facing the epicenter, towards the expected elastic vibrations, and seismographs are installed in the zone of their possible action and on the outside of the vacuum wall.

 The technical result is achieved by damping elastic waves using a vacuum wall in a trench, and the fact of damping is controlled by seismographs installed on both sides of this wall.

 The invention is illustrated by drawings, where in FIG. 1 is shown in plan: the epicenter of a possible earthquake ringed by a vacuum wall, and in FIG. 2 shows a cross section through a vacuum wall in a trench.

 The device is made in the form of a horseshoe in plan, around the epicenter of a possible earthquake 1, and placed at an optimally close distance, regardless of the predicted magnitude or magnitude of the predicted earthquakes, in territory 2 around the epicenter within the boundary 3 of possible earthquakes. The device is made in the form of a wall with vacuum cavities in a trench 4 mounted on a sand cushion 5. The wall is composed of protective screens 6, the vacuum cavities of which are made in the form of spherical shells. The screens are installed one opposite the other on a sand cushion 5, for example, in two rows with one screen offset in height and length half the diameter of the spherical shell relative to the other, which allows damping elastic vibrations at all points of the wall, and is covered with sand 7. Sand can be placed on top of the sand if necessary, reinforced concrete protective slabs (not shown) are laid.

 The protective screens 5 are glued from hemispheres stamped from a sheet of thermochemical-resistant plastic, in each of which a vacuum is created.

 Depending on the depth of formation of the epicenter, the vacuum wall is installed vertically or obliquely in the trench, with the plane facing the epicenter, towards the expected elastic vibrations. In the zone of the possible action of elastic vibrations, seismographs 8 are installed to record information about the magnitude of magnitude, the number of earthquake points, its depth and other information; seismographs 9 are also installed outside the vacuum wall to record the fact of the damping of elastic vibrations.

Claims (1)

 A device containing a trench and a wall located therein for damping elastic vibrations during an earthquake with vacuum cavities, characterized in that the wall is composed of protective screens, the vacuum cavities of which are made in the form of spherical shells, the screens being glued from hemispheres stamped from a sheet of thermochemical plastic are installed one opposite the other on a sand cushion in a trench, for example, in two rows with the displacement of one screen relative to the other in height and in length by half the diameter of the ball mounds and filled with sand, the trench and the vacuum wall are made in the form of a horseshoe around, for example, predicted and recorded on the maps epicenters of earthquakes and a separate building and structure, at an optimally close distance, regardless of the predicted magnitude or magnitude of predicted earthquakes, while the vacuum wall installed in the trench vertically or obliquely, with the plane facing the epicenter, towards the expected elastic vibrations, and in the zone of their possible action and from the outside of the vacuum heating spirals installed seismographs.

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