Method of seismic reinforcement of buildings
(57) Abstract:Use: method of seismic reinforcement of buildings. The inventive arrange concrete belts with the two sides of the basement of the building and in two levels and is rigidly attached thereto. The upper belt placed under the basement ceiling. Cut the plinth of the building between the upper and lower zones, rasklinivanie her. Set in the gap elements of seismic isolation and remove the wedges. 1 Il. The invention relates to the construction and strengthening of existing buildings in seismic areas to the level of modern requirements of seismic stability.There is a method of amplification of high-rise buildings, including the arrangement of the joint in the lower part of the building and the placement of elements of the seismic isolation (see ed. mon. USSR N 1413227, class E 04 H 9/02, 1988).The closest technical solution is a method of seismic reinforcement of buildings with a ground part and supported on her basement floor and the device zones (see ed. mon. USSR N 86423, class E 04 H 9/02, 1949).The disadvantage of this technical solution is that the strengthening of buildings may be made in its construction, neozoa seismic strengthening of existing buildings.This goal is achieved by the fact that the belt suit of reinforced concrete two sides of the ground part and rigidly fixed to the last two levels, the top of which are placed under the basement ceiling, then cut the ground portion between the upper and lower zones, rasklinivanie her education gap and place in it the elements of seismic isolation with subsequent removal of the wedges.The drawing shows a fragment of the building.Method of seismic reinforcement of existing buildings is carried out in the following sequence.On the ground of part 1 of the building suit concrete belts 2, 3 in two levels. The upper belt 2 is placed under the basement ceiling 4.Belts 2, 3 are fixed to the ground part 1 anchors 5, the wedges 6, by bolts 7. The lower belt 3 can be attached to elements of the Foundation. Then the basement part 1 of the building is cut between the upper 2 and lower 3 zones, for example, by diamond disc stone cutting machine and rasklinivanie her with the formation of the gap 8.In the gap 8 install seismic isolation elements 9, for example, sliding bearings 10, the elastic limiting horizontal movement of the dampers 11, hard limiters gorer CLASS="ptx2">Method of seismic reinforcement of buildings can improve the earthquake resistance of existing buildings without evicting tenants or stop production at the enterprises and thereby significantly reduce the time gain and its value. Method of seismic reinforcement of buildings with a ground part and supported on her basement ceiling by the device of the belt, wherein the belt perform concrete, place the two sides of the ground part and rigidly fixed to the last two levels, the upper of which come under the basement ceiling, then cut the ground portion between the upper and lower zones, rasklinivanie her education gap and establish in it the elements of seismic isolation with subsequent removal of the wedges.
FIELD: construction, particularly to construct buildings and structures in earthquake zones or special-purpose objects.
SUBSTANCE: multistory earthquake resistant building includes upper spatially stiff stories defined by columns, crossbars, floor panels and well panels; ground or the first floor formed of kinematical posts with rounded upper and lower edges so that posts may perform stable swinging during earthquake along groves. The grooves are formed in upper framing members created as a part of floor panel or ground floor and in lower framing members made as a part of foundation bearers. Rounded post edges have variable curvature acting as lockable and releasable links and limiting large horizontal movement along with retaining post capacity to reduce seismic forces affecting on buildings and structures during earthquake. Kinematical posts are monolithic or composed of several parts without embedded members. Horizontal cross-section of each kinematical post define star with 3, 4, 5, 6, 7, 8, 9 … n points, wherein unrestricted number n of star points create stiffening ribs.
EFFECT: increased efficiency, strength and stability of the support under broad earthquake frequency spectrum.
FIELD: construction, particularly to erect buildings and building structures in seismic areas or special structures.
SUBSTANCE: multistory earthquake-resistant building comprises upper spatially rigid stories built of columns, girders, floor panels, wall panels, and the first or ground floor or the first and ground floors made of ribbed walls. Wall ribs have rounded upper and lower edges and may stably swivel along grooves created in horizontal panels during earthquake, wherein said walls are arranged between the panels. Rounded wall and rib edges have varying curvature so that said curvature is used as engaging and disengaging links and limit large displacement along with retention of seismic force reduction properties of the walls. Building comprises independent ribbed walls installed on two levels and intermediate horizontal panel arranged in-between. The horizontal panel is solid or provided with orifices or is made as crossing beam system. Walls and ribs thereof have rounded edges with varying curvature, which create cylindrical rolling surfaces to increate mutual contact areas and decrease stress concentration in walls. Walls of each level may swivel only in longitudinal and transversal directions with respect to building orientation so that wall displacement vectors in upper and lower levels are transversal one to another.
EFFECT: increased seismic resistance and reliability, possibility to withstand broad frequency spectrum earthquakes, elimination of stress concentration.
1 cl, 10 dwg
SUBSTANCE: invention refers to protection of buildings and constructions against earthquakes. Arrangement of buildings and constructions with protection against earthquakes includes separately standing underground part, i.e. the technical underground consisting of the bottom and preliminary intense reinforced-concrete walls, deduced to leveling mark of the earth in the form of a motionless support, at the distance of a technical clearance along the building perimeter overlapped by reinforced concrete slabs, the base from the concrete poles established in reinforced-concrete glasses. The underground part is executed separately standing and perceives earthquake loads on itself as a motionless bearer, and the concrete poles established in reinforced-concrete glasses, which extinguish residual vertical earthquake loads, as sliding bearers.
EFFECT: increase in building stability.
FIELD: construction industry.
SUBSTANCE: invention refers to construction industry and can be used for erecting buildings and constructions under normal building conditions and in seismic areas. Earthquake-resistant building consists of foundation, wall panels and slabs. Wall panels and slabs are made with contour framing from metal angles turned at an angle of 45° relative to middle plane of wall panel and slab and connected to each other so that they can move relative to each other. Friction gaskets increasing dispersion energy factor during building frame vibrations are installed between contour framings of adjacent panels. Slabs edges are made with hollows, and wall panels - with appropriate protrusions, sizes of which are less than sizes of hollows by gap width.
EFFECT: improving earthquake-resistance and operating reliability of construction, and expediting building erection.
2 cl, 4 dwg
SUBSTANCE: invention is related to the sphere of construction, in particular to facilities for protection of buildings and structures against seismic impact. Earthquake isolating device consists of two parallel metal plates, between which flexible metal rods or bundles of rods are vertically arranged and fixed with one end. Rubber is inserted between rods. Free ends of flexible metal rods or bundle of rods are fixed to the second plate. Lead core is arranged in the structure centre.
EFFECT: improved protection of buildings and structures against seismic impact.
SUBSTANCE: invention is related to the sphere of construction, in particular to facilities for protection of structures against seismic impact. Earthquake isolating device consists of two parallel metal plates. Flexible metal rods or bundles of rods are vertically arranged and fixed to plates. Rubber is installed between rods or bundles of rods.
EFFECT: increased duration of earthquake isolating device operation, simplified manufacturing and installation.
SUBSTANCE: invention relates to rescue structures to ensure safety for people found out in high-storied buildings and other places during earthquakes and fires. The rescue module includes hard hollow body with a front door. The body is made from shock-proof material. The rescue module consists of an arm-chair, life-support kits, for example first-aid kit, water, oxygen container and mask. The rescue module can be is fixed to a wall, floor or ceiling by shock absorbers and provided with arm-chair mounted on spring or elastomer shock-absorbers.
EFFECT: shelter in case of fire or building damage during earthquake.
3 cl, 1 dwg
SUBSTANCE: invention is related to the field of construction, namely to erection of buildings and structures in earthquake zones. Quakeproof building comprises carcass, foundation slab suspended on traction rods, which are stiff in vertical direction, to foundation sleeve, which encloses it and rests on foundation soil, and layer of damping material. At the same time foot of foundation slab contacts layer of damping material laid on the bottom of foundation sleeve, and detectors are mounted into bottom of foundation sleeve for measurement of vertical pressure of building, value of which is adjusted by rotation of nuts at the ends of traction rods.
EFFECT: improved reliability and earthquake resistance of building due to control of friction, which occurs as a result of horizontal seismic load effect between foot of building foundation slab and layer of damping material.
1 cl, 1 dwg
SUBSTANCE: invention concerns astronautics and serves for people residence on planet with earthquakes. Quakeproof house consists of body arranged in the form of balls with weights in lower part, and in upper part there are grooves covered with elastic film.
EFFECT: increase of stability in case of earthquake.
SUBSTANCE: invention is related to the field of civil and industrial construction. Quakeproof structure (residential building of elite class) comprises foundation, on which structure body is installed, comprising reinforced concrete frame. Structure is equipped with quakeproof frame, which comprises the following components: central bearing support, having shape of hollow truncated cone, to which at least three radial supports are connected in vertical plane, at the same time along circle from top to bottom their number increases, depending on structure earthquake resistance. Along outer contour of quakeproof frame there are outer bearing supports joined to radial bearing supports. Inside central bearing support there are the following components installed: tension rope device, shaft of lifting transport means, shaft of utility devices. Inside quakeproof frame between floors there are horizontal ceilings arranged, internal partitions are installed, and inside, along its contour, there are outer walls arranged. At the same time centre of gravity of quakeproof structure is arranged along axis of its symmetry by not more than 1/3 of its height from structure foundation. Also method is described for development of areas with quakeproof structures.
EFFECT: improved quakeproof resistance of building, its reliability, simplified mounting of unitilies.
5 cl, 12 dwg