The foundation for earthquake resistant buildings
(57) Abstract:The invention relates to construction and is intended for the construction of low-rise buildings in seismic areas with estimated seismicity of 7 or more points. The basis for earthquake-resistant building includes upper and lower elements separated by a horizontal seam filled with loose material. Granular material is placed in the seal elastic toroidal tanks that have cutouts on the inner surfaces, the edges of which are sealed annular band, and the vessel placed in a glass base with a gap, which is filled with granular material without seals. This design decision allows viscous to repay seismic forces coming to the building from the Foundation. Applying Foundation on which to build in areas with high seismic activity will not only lead to the decrease of metal buildings, but also to improve their reliability, especially housing, individual developers. 1 Il. The invention relates to construction and is intended for the construction of low-rise buildings in seismic areas with estimated seismicity of 7 or more points.Known Foundation for earthquake-resistant buildings, including the top and bottom e is CLASS="ptx2">The lack of such a Foundation is a significant excess friction of the optimal level of 0.1 to 0.3 weight buildings with 9-point seismic impact, the lack of devices that return the building to its original position after the earthquake, the possible extrusion of granular material from the depressions, which can cause uneven drawdown of the individual elements of the building, as well as the possibility of a hard collision of the upper and lower elements, which increases the load on the building.The task of the invention is to reduce the seismic loads on the building.The problem is solved due to the fact that the Foundation for earthquake-resistant buildings, including upper and lower elements, separated by a horizontal seam filled with granular material granular material is placed in the seal elastic toroidal tanks that have cutouts on the inner surface, the edges of which are bonded ring bandages, and the vessel placed in a glass base with a gap, which is filled without compacting loose material.The drawing shows a fragment of the basement.The basis for earthquake-resistant building 1 includes the top 2 and bottom 3 members, each horizontal seam of the inner surface, edges of which are bonded ring bandage 8. The container 6 is placed in a glass 9 Foundation with a gap, which is filled with granular material 10 without seals.This design decision allows viscous to repay seismic forces coming to the building from the Foundation, to return the building to its original position after the earthquake, to eliminate the hard collision of the individual structural elements.Applying Foundation on which to build in areas of high seismicity is given not only to the decrease of metal buildings, but also to improve their reliability, especially housing, individual developers. The basis for earthquake-resistant buildings, including upper and lower elements, separated by a horizontal seam filled with bulk material, wherein the bulk material is placed to seal the elastic toroidal tanks that have cutouts on the inner surface, the edges of which are bonded ring bandages, and the vessel placed in a glass base with a gap, which is filled with granular material without seals.
FIELD: building, particularly for erecting pile-plate foundations for industrial buildings and structures, for instance for main buildings of heat power plants.
SUBSTANCE: method involves arranging drilled cast-in-place pile, grouting plate grillage and installing antivibration mounts. Anchorage reinforcement is placed in pile heads and arranged along marked building axes. Anchorage reinforcement is then grouted and resilient antivibration mounts are installed at pile heads. Resilient antivibration mounts are fixed in plane on anchorage reinforcement with the use of fasteners so that antivibration mounts may perform restricted movement. Installed on antivibration mounts is rigid metal foundation frame of upper building in which anchoring reinforcement for securing skeleton of building to be erected is installed. Reinforcement rods and supply lines are inserted in process orifices formed in foundation frame beams and frame is grouted to form panel grillage.
EFFECT: reduced work content, increased simplicity and speed of bearing grillage frame erection; improved building stability.
9 cl, 5 dwg
FIELD: building, particularly frame structures for civil and industrial buildings to be erected mainly on sinking territories or territories to be developed.
SUBSTANCE: method for connecting eccentrically loaded column with foundation by fixing thereof in orifice formed in foundation involves forming composite multi-stepped foundation having central, medium and outer steps and through wedge-like orifices made in each step, wherein orifices taper downwards with cone angle of 1/10 to 1/5 (5.7 - 11.3o) and each step and lower column end are also wedge-like and have cone angles of 1/12 - 1/6 (4.8 - 9.5o), steps are inserted one into another and wedge-like column end extends into central orifice of central foundation step; tightly installing pair of force mounting wedges in gap between wedge-like column end and foundation, wherein each mounting wedge comprises two levers pivotally connected by the first ends to change cone angle of wedge and to regulate column verticality; securing jack communicating with hydraulic pulsing pumping plant to one lever; filling gap between foundation steps and gap between wedge-like column end and foundation with solid powder material, particularly with crushed granite with particle dimensions of 5 - 10 mm; covering upper part of central orifice of central step with concrete plug of 40 - 50 mm thickness along column perimeter; arranging centering pads on concrete plug symmetrically about eccentrically loaded column; installing pair of jacks on centering pads; securing mounting device formed as split terminal including L-shaper rests pressed to column and connected one to another by means of two bars and pins with stressing nuts, wherein jack pistons cooperate with L-shaped rests from below to maintain design position of eccentrically loaded column and to solidify powder material in gap between column tip and foundation orifice wall.
EFFECT: provision of straightening column position relative foundation without connection unit damage; increased reliability of anchoring eccentrically loaded column in foundation.
FIELD: anti-seismic protective units for buildings and structures.
SUBSTANCE: proposed protective unit includes many modules laying in one plane at contact with each other; each module consists of two identical parts made from rigid plastic material and connected in center by means of silent-block; used automobile tire is placed between them, thus forming deformable elastic chamber filled with granule-like elements made from plastic material; granule-like elements possess hydraulic properties.
EFFECT: possibility of weakening, dissipating and dampening seismic wave.
2 cl, 4 dwg
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 on permafrost ground, which may thaw during building or building structure usage.
SUBSTANCE: method involves digging-out pit; filling the pit with nonfrost-susceptible material; introducing reinforcing members in the nonfrost-susceptible material and mounting foundations. The reinforcing member is made as rigid reinforced concrete panel arranged in compacted nonfrost-susceptible material layer. Distance between foundation bottom and panel top is selected to provide uniform load transmission from the foundations to the panel. Upper panel surface is formed of heat-insulation material and sloped parts inclined from panel center to panel periphery are created. Panel rigidity is related with thawing permafrost ground deformation extent.
EFFECT: reduced building deformation caused by non-uniform deformation of thawing permafrost ground.
FIELD: foundations for special purposes, particularly foundation platforms connected to tanks.
SUBSTANCE: reinforced concrete beams or trusses are installed between reinforced concrete panels of upper and lower belts of three-dimensional platform. Reinforced concrete beams or trusses have inclined upper face and are connected one to another in center by monolithic rigid core. The reinforced concrete panels have trapezoid or segmented shape in plane. Reinforced concrete beams or trusses with key connections are located in parallel between reinforced concrete panels of upper and lower belts. Tank walls and coverings have arched structure shaped as prismatic polyhedron inscribed in cylindrical surface defined by square parabola or another curve with generatrices parallel to beams or trusses of three-dimensional foundation platform.
EFFECT: increased structural efficiency due to increased reliability of three-dimensional foundation platform, reduced metal consumption and labor inputs.
2 cl, 9 dwg
FIELD: building, particularly pile foundations including floating piles.
SUBSTANCE: method involves injecting hardening mortar via injectors driven in ground in area between the piles and at pile ends for depth exceeding 1-2.5 m, wherein the injectors are spaced 1.5-2.0 meters apart. The hardening mortar pressure gradually increases. The hardening mortar is injected up to creation of hydraulic fracture cavities having 1.5-2.0 m radii around each injector. Then the injection operation is preformed under constant pressure of 2-10 atm to consolidate and reinforce ground, compress the piles to multiply load-bearing capacity thereof by 1.5-2 times.
EFFECT: increased load-bearing pile capacity due to increased side friction and head resistance.
3 cl, 1 dwg
FIELD: tire utilization and use in building, particularly to erect earthquake resistant foundations for low buildings, to construct road beds in marshlands and to erect mudflow control structures of used tires.
SUBSTANCE: method involves laying tires one upon another in several layers so that tread tire parts are in close contact with each other; connecting the tires by inserting fastening members in tire interiors. Tires are grouped in the first tire layer and then perforated strips are installed in interior of each tire. Number of strips depends of number of adjacent tires. Perforated strip orifices are spaced apart a distance corresponding to tire layer thickness. Then adjacent tires are pulled together by means of fastening pins having flat non-threaded parts. The pins are located from top and bottom of tire sides. Then next tire layers are laid and connected in the same way to provide stack having necessary height. Spaces defined in tire stacks and between the tires are filled with filler.
EFFECT: increased reliability of tire connection.
FIELD: building equipment, particularly foundations for sinking or earthquake territories.
SUBSTANCE: method involves determining active vibration zone and surface length wave; creating vertical screen between active vibration zone and building or building structure to be protected as at least one well row, wherein the wells are drilled for depth equal to at least 0.5 of surface wave length and straight line passing from any active vibration zone point to extreme points of vertical screen does not cross building or building structure foundation; creating additional screen under building or building structure base as a number of wells drilled in accordance with uniform grid pattern for length of not more than vertical screen depth. Wells forming vertical and additional screen are treated with consolidating solution.
EFFECT: increased efficiency of building or building structure protection against vibrations or seismic inflexibility of building and building structure base ground.
FIELD: construction, particularly to erect heavy structures on compressible ground in seismic zones.
SUBSTANCE: method involves driving piles; connecting members formed as inversed cups to pile heads; connecting pile heads with slab-like raft. In the case of foundation construction in seismic zones plies having different lengths are used. Long piles are arranged along longitudinal and transversal axes of load-bearing walls. Short piles are driven between main ones. Reinforcement bars of short piles are introduced in raft body for length equal to bolting length necessary to create rigid joints after raft concreting. Before raft concreting members made as inverted cups are put on long pile heads to create gap with thickness equal to half of immersion depth admissible for structural layout of building under construction. Foamed polystyrene layer having thickness equal to gap thickness is formed on upper ends of long piles.
EFFECT: extended technological capabilities due to increased building structure load transferred to structure foundation and be taken by slab and decreased structure immersion.