Method for erection of foundation slab of framed structure

FIELD: construction.

SUBSTANCE: method for erection of foundation slab of framed structure includes foundation preparation, arrangement of curb onto prepared foundation, installation of reinforcing grid, its fixation, concreting. Foundation is prepared by filling of gravel layer and a layer of sand over it and laying of hydraulic insulation, for instance PVC film, afterwards lower part of foundation slab of framed structure is shaped by installation of enclosing curb made of concrete, for instance onto hydraulic insulation, arrangement of reinforcing grid limited by enclosing curb along perimetre, fixation of reinforcing grid, for instance by means of welding, transverse and longitudinal axial marking of reinforcing grid into squares, for instance 2.0×2.0 m, in angles of which, perpendicularly to reinforcing grid, reinforcement is installed and fixed, for instance, by means of welding, with length equal to design thickness of foundation slab of framed structure. Concreting of reinforcing grid down to required thickness, with further installation of multiuse curb blocks onto concreted surface in centre of marked squares in number sufficient to fill three first rows perpendicularly to longitudinal axis of foundation slab of framed structure, concreting is performed in two stages, at the first stage space is concreted between enclosing curb, the first and partially second rows of blocks, afterwards concrete should mature to state, when its surface still is adhesive enough for connection with the following portion of concrete to form monolithic structure. At the second stage remaining part of the second and partially third rows of multiuse curb blocks is concreted, after hardness is achieved that excludes concrete breakage, when multiuse curb blocks are withdrawn. The first row of blocks is withdrawn and installed in the fourth row, concreting is continued till final formation of framed structure area. Cells, which are not filled with concrete, produced by blocks of multiuse curb, are closed with reinforced concrete covers, and upper part of foundation slab of framed structure is arranged by laying of reinforcing grid onto produced surface limited along perimetre by enclosing curb, fixation of reinforcing grid, its connection, by means of welding, with outlets of reinforcement of lower part of foundation slab of framed structure and concreting down to required thickness.

EFFECT: reduced material intensity and labour intensity, improved strength and reliability of design.

3 dwg

 

The invention relates to the construction and can be used in industrial and civil construction during the construction of structures foundations for any homogeneous natural basis (including on weak soils, such as clay, peat, silt etc).

Closest to the proposed invention is a method of construction slab Foundation (patent RU №2276708 C1, E02D 27/01, publ. 20.05.2006, including the device in the ground of intersecting slits, reinforcing their frames and concreting.

The disadvantage of this method is:

- the complexity of device slots on poor, sandy soils and soils with a high groundwater level due to the instability of the design of the cracks in the ground;

- inability waterproofing array of Foundation when the concrete was laid in the soil, especially on water-saturated soils;

the relatively high consumption of concrete.

The aim of the invention is to develop a method of construction of the Foundation slab frame construction on a homogeneous basis.

The invention is illustrated by drawings, where figure 1 - sequence of concreting using blocks reusable formwork; figure 2 shows a base plate of a frame design in plan and in section; figure 3 - remote item 2

This objective is achieved in that the method gave the value of a base plate frame, including preparation of base, the device is prepared on the base of the formwork, laying of reinforcement of the field and its reinforcement, concreting, according to the invention are training grounds, including barrow gravel and on top of it a layer of sand and laying waterproofing, such as PVC film, and then forming the lower part of the base plate frame by the installation of a waterproofing enclosing casing, for example, of concrete, laying of reinforcement of the field bounded by the perimeter of non-load-bearing formwork, reinforcement reinforcement field, for example by welding, transverse and longitudinal axial markup armature field into squares, for example, 2.0×2.0 m, the angles are perpendicular armature field installed and fastened, for example welded reinforcement length equal to the design thickness of a base plate frame construction, concrete reinforcing field to the desired thickness and then installing on concrete surface blocks reusable formwork in the center of the marked squares in a quantity sufficient to fill the first three rows perpendicular to the longitudinal axis of the base plate frame construction, concreting in two stages, the first stage carry out concreting space between the enclosing casing, first and part of the second row of blocks reusable formwork, p is the following which the concrete must cure to a condition when its surface still has sufficient adhesion to connect with the next portion of the concrete monolith, the second phase will pour the remaining part of the second and the third row of blocks reusable formwork, after reaching hardness, excluding the destruction of concrete by removing blocks reusable formwork, the first row of blocks are taken away and set in the fourth row, concreting continue until complete formation of the area frame is not filled with concrete cell, formed by blocks of reusable formwork, concrete cover caps and formed on the surface arrange the upper part of the base plate frame by stacking armature field formed on the surface bounded by the perimeter of non-load-bearing formwork strengthening reinforcement field, its compounds, for example, welded to the armature releases the lower part of the base plate frame construction and concrete to the desired thickness.

The implementation of the method of construction of a base plate frame is performed in the following sequence and is illustrated in this example.

Any homogeneous basis (1) (1) level (including on weak soils, such as clay, peat, silt etc), on the basis of (1) occiput layer of gravel (2) a thickness of at least 150 mm, fra is of 0-30 mm and over it a layer of sand (3) thickness of 10-30 mm and stacked on top of the waterproofing (4), for example, PVC film, and then forming the lower part of the base plate frame by installing the waterproofing (4) enclosing casing (5), for example of concrete, laying of reinforcement field (6)bounded by the perimeter of the enclosing casing (5), strengthening reinforcement field (6), for example by welding, transverse (7) and longitudinal (8) axial markup armature field (6) into squares, for example, 2.0×2.0 m, the angles are perpendicular to the armature field (6) establish and fastened, for example by welding, the valve (9 of length equal to the design thickness of a base plate frame construction, concrete reinforcing field (6) on the desired thickness of 100-200 mm in accordance with the calculation load can withstand the required time and then installing on concrete surface (10) blocks reusable casing (11) in the center of the marked squares in a quantity sufficient to fill the first three rows perpendicular to the longitudinal axis of the base plate frame.

The block size of the reusable casing (11), made of reinforced concrete, selected from the following considerations:

- compliance with the multiplicity of dimensions of the axial grid base plate frame single module (M=6 m) for vertical and horizontal dimensions in the construction industry (GOST 23838-89);

the exception is the difficulty the stay, associated with transportation of oversized cargo in accordance with the current "Rules of the road".

Concreting of the space between the enclosing casing (5), the first and part of the second row of blocks reusable formwork (11) conduct the first stage, after which the concrete needs to cure to the point where its surface still has sufficient adhesion to connect with the next portion of the concrete monolith, the second phase will pour the remaining part of the second row and the third row of blocks reusable casing (11), after reaching hardness, excluding the destruction of concrete by removing blocks reusable casing (11), the first row of blocks are taken away and set in the fourth row, concreting continue until complete formation of the area frame design. Then blocks are reusable casing (11) is completely taken away and can be used in the construction of the base plates of similar design repeatedly.

Not filled with concrete cell (12) (figure 2), formed by blocks of reusable formwork (11) (figure 1), close pre-prepared concrete caps (13) (figure 3). On the formed surface (14) arrange the upper part of the base plate frame by laying on the surface (14) is limited by the perimeter of the enclosing casing (5) (1) armature the field (15) (3), strengthening reinforcement field (15) to provide rigidity and structural strength, reinforcement box (15) are combined, for example by welding, with reinforcement bars (9) (figure 1) the lower part of the base plate frame.

Ready armature field (15) (3) concreted in accordance with the calculation load and maintain necessary time. Then enclosing the casing (5) (figure 1) is removed and the formed base plate frame ready for installation advancement building structures.

Using the proposed method of construction of the Foundation slab frame construction allows you to:

- significantly reduce the consumption of concrete and reinforcement during the construction of slabs, at the same time ensuring their high stiffness and strength;

- reduce the time of construction of foundations;

- reduce the complexity Foundation works:

to improve the accuracy of the constructed Foundation structure;

to ensure the solidity of laying array of concrete in the base plate frame.

The method of construction of the Foundation slab frame construction, including preparation of substrate, the device is prepared on the basis of formwork, laying of reinforcement field, its strengthening, concreting, characterized in that conduct training base, including barrow gravel and Powerage layer of sand and laying waterproofing, for example, a PVC film, and then forming the lower part of the base plate frame by the installation of a waterproofing enclosing casing, for example, of concrete, laying of reinforcement of the field bounded by the perimeter of non-load-bearing formwork, reinforcement reinforcement field, for example, by welding, transverse and longitudinal axial markup armature field into squares, for example, of 2.0×2.0 m, the angles are perpendicular to the armature field is set and fixed, for example, by welding the reinforcement length equal to the design thickness of a base plate frame construction, concrete reinforcing field to the desired thickness, and then installing on concrete surface blocks reusable formwork for the center of the marked squares in a quantity sufficient to fill the first three rows perpendicular to the longitudinal axis of the base plate frame construction, concreting in two stages, the first stage carry out concreting space between the enclosing casing, first and part of the second row of blocks, after which the concrete needs to cure to the point where its surface still has sufficient adhesion to connect with the next portion of the concrete monolith, the second phase will pour the remaining part of the second and the third row of blocks reusable formwork, after reaching the solid is STI, excluding the destruction of concrete by removing blocks reusable formwork, the first row of blocks are taken away and set in the fourth row, concreting continue until complete formation of the area frame is not filled with concrete cell, formed by blocks of reusable formwork, concrete cover caps and formed on the surface arrange the upper part of the base plate frame by stacking armature field formed on the surface bounded by the perimeter of non-load-bearing formwork, reinforcement reinforcement field, its connection, for example, welded to the armature releases the lower part of the base plate frame construction and concrete to the desired thickness.



 

Same patents:

Basement // 2367743

FIELD: construction.

SUBSTANCE: invention concerns construction, particularly building basements for industrial and civil facilities. Basement includes external shell widening in bottom part and holding filler material of varying material durability grade. Filler material of varying durability is laid in layers in horizontal and vertical directions.

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FIELD: construction.

SUBSTANCE: invention is related to construction, namely to erection of buildings and structures on freezing heaving soils. Foundation on freezing soil includes rigid body comprising foot and wall, with gasket from the side of foot inverted to soil and made of heat insulation material, for instance from foam polystyrene, and also additional heat insulation material installed outside foundation limits. Upper edge of additional heat insulation material is pulled from the side of foundation external edge in the form of broken inserts via rigid body of foundation and is connected to additional heat insulator of opposite external edge of foundation. Pressure on soil in foundation foot is accepted as not higher than value of design resistance of heat insulation material to compression, and relative area of broken inserts (β=Abr ins/A0) is defined from ratio β≤1-σmax/R, where Abr.ins is area of broken inserts section, m2, A0 is gross area of foundation section in place of inserts installation, m2, σmax is maximum tension in foundation material from external loads, MPa, R is design resistance of foundation material, MPa. Additional heat insulation material installed on external side of foundation foot is connected to heat insulation material of foundation external wall. Additional heat insulation material installed on internal side of foundation foot is connected to heat insulation material of foundation internal wall. Inserts of additional heat insulation material of foundation are connected to ceiling heat insulation material above foundation. Heat insulation material installed from external side of foundation wall is connected to heat insulation material of blind area. Heat insulation material installed on internal side of foundation wall is connected to heat insulation material of ceiling above foundation.

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2 dwg

FIELD: construction.

SUBSTANCE: invention relates to foundation construction technologies, and particularly, to reinforcing technology used for compressible foundation sections of detached or standard foundations in buildings and structures being erected under severe engineering and geological and hydro-geological conditions. Method of foundation bed construction by horizontal reinforcing with solid concrete components includes foundation pit mining and installation of horizontal stiff lengthy elements such as crossties. As soon as the foundation pit is developed to the designed depth, which is equal to the sum of foundation bed depth of installation and buffer layer thickness, and is bladed, foundation pit bottom is leveled. After that, foundation axes are broken down and longitudinal axes of future solid crossties are broken down against the established construction layout of the longitudinal axes of future solid crossties regarding foundation axes. The chaps for solid crossties are made mechanically or manually on foundation pit bottom along the marked longitudinal axis of the future solid crossties. Besides, the chap depth is equal to the cross section of the future solid crosstie. The chap bottom is cleaned and reinforced frameworks are laid down in the chaps. The chaps are then cemented together with the reinforced frameworks by means of concrete mix B15 with further compacting. To install horizontal reinforced solid elements in the chaps such as solid crossties are located on the foundation pit level. So, the crosstie distributing element is formed in the compressible section of the built structure foundation bed. In addition, the length of each solid crosstie must not exceed the distance between the external shapes of the utmost foundation edges of the building. The chaps for solid crossties installation are made in parallel to each other and at design distance from each other so that the area of crosstie distributing element overlaps foundations area completely. As soon as the concrete mix in the chaps will achieve the strength no less than 50% from the design strength, the buffer layer is laid down, leveled and compacted. The buffer layer is laid down to the level of built structure foundation bed. The buffer layer consists of sand, crushed stone from solid rocks or crushed stone from ferrous metallurgy wastes. The buffer layer thickness must not be less than 1/3 of solid crosstie width or cross section diameter. The maximum size of crushed stones must not exceed 1/5 solid crosstie width or cross section diameter.

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Basement // 2334054

FIELD: building.

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Basement // 2334053

FIELD: building.

SUBSTANCE: invention refers to building and concerns creation of the basements of radial envelopments for buildings and constructions. The basement contains the basement with a curvilinear surface, supporters and envelopment located on the basement. Supporters are executed in the form of radial tapes forming envelopment, laid on a curvilinear surface and turned by bulge upwards the artificial basement located in a foundation ditch or the natural basement. Radial tapes are attached by edges to a basic contour in the form of a basic ring which is established on the natural basement.

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Basement // 2334052

FIELD: building.

SUBSTANCE: invention refers to building and concerns creation of basements - mesh envelopments for buildings and constructions. The basement contains the artificial basement with a curvilinear surface, supporters and envelopment located on the basement. Supporters are executed in the form of radial and ring tapes forming the mesh envelopment, laid and gummed on the concrete surface formed on a curvilinear surface of the artificial basement located in foundation ditch and turned bulge upwards. Radial tapes are attached by edges to a basic contour in the form of a basic ring which is established on the natural base.

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Basement // 2334051

FIELD: building.

SUBSTANCE: invention refers to building and concerns creation of basements - mesh envelopments for buildings and constructions. The basement contains the artificial basement with a curvilinear surface, supporters and envelopment located on the basement. Supporters are executed in the form of radial and ring tapes forming the mesh envelopment, laid and gummed on the concrete surface formed on a curvilinear surface of the artificial basement located in foundation ditch and turned bulge upwards. Radial tapes are attached by edges to a basic contour in the form of a basic ring which is established on the natural basement.

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Basement structure // 2334050

FIELD: building.

SUBSTANCE: invention refers to construction of the basements of buildings. The basement structure of a building includes heat - and waterproofing layer (17, 18, 40) which is laid on a flat horizontal surface (51) layer of the material breaking capillary action. The basement structure includes a frame (31) which surrounds specified heat - and waterproofing layer (17, 18, 40), at least, in its top part, thus fixing integrity of basement structure in a horizontal plane and which serves for punctiform bracing of the building supported by basement structure. The specified basement structure is encapsulated with foil (111) from a metal material.

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8 cl, 8 dwg

FIELD: constructional engineering.

SUBSTANCE: invention refers to constructions on heaving soils. House footing based on freezing through soils includes a rigid body with flanges and indents from soil side, footing indent inserts made of heat-insulating material, e.g. polystyrene foam at such ratio of flange and footing indent areas that soil pressure from the lower flange surface is not less than standard pressure of frost soil heaving, soil pressure from the lower insert surface is not exceeding design compression resistance of insert material. Also, the said footing contains supplementary heat insulation laid outside of the footing. The upper edge of supplementary heat insulation is passed from external edge of the footing in the form of interrupted inserts through rigid body of the footing and connected to supplementary heat insulation of opposite external edge of the footing. Relative area of interrupted inserts (β=Aint.ins./A0) is given by the relation β≤1-σmax/R, where Aint.ins. is sectional area of interrupted inserts, m2, A0 is gross sectional area of the footing within inserts arrangement regions, m2, σmax is maximum external load pressure in footing material, MPa, R is design resistance of footing material, MPa. Indents and flanges of the footing from soil side are alternating along footing length. Indents centres from soil sides are provided under interrupted inserts centres of supplementary heat insulation from each external edge of the footing.

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EFFECT: increased operational effectiveness and reduced costs.

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EFFECT: increased load-bearing capacity per foundation volume unit, extended field of technical means.

3 cl, 4 dwg

FIELD: construction, particularly to erect foundations in natural base.

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EFFECT: increased load-bearing capacity of the foundation due to inclined members embedding and ground compaction under foundation bottom.

4 dwg

FIELD: construction, particularly to erect multistory buildings on non-uniformly compressible clay base.

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EFFECT: increased rigidity of foundation slab due to provision of ribs in ground.

5 dwg

FIELD: construction, particularly to erect foundations on natural bases.

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EFFECT: increased load-bearing ability.

2 dwg

FIELD: construction, particularly to reconstruct buildings and building structures.

SUBSTANCE: foundation comprises supports, sheath freely formed in ground inside area defined by foundation so that convexity thereof faces upwards and connected to supports by means of flexible ties. Cement mix layer, metal arch trusses and reinforced concrete layer are serially arranged on ground inside area defined by foundation. Metal sheets are laid on arch trusses and connected with each other through welded joints to create flexible sheath. Pre-stressed flexible ties inserted in through support orifices and provided with fixing anchors are placed over the sheath. In the second embodiment foundation comprises support, sheath freely arranged in ground inside area defined by foundation so that convexity thereof faces upwards and connected to supports by means of flexible ties. Ground mix layer reinforced with cement mix, metal sheets and reinforced concrete layer are serially located on ground inside area defined by foundation. Metal sheets are bent along predetermined profile and connected with each other to create sheath. Relaxed flexible ties inserted in through support orifices and provided with fixing anchors are placed over the sheath.

EFFECT: increased operational reliability.

4 cl, 1 dwg, 1 ex

FIELD: construction, surface mounted structures.

SUBSTANCE: invention pertains to construction and can be used when erecting buildings with considerable loading on a compressed clay bed. The technique for erecting a solid core foundation slab with closed vertical walls, directed downwards, involves designing a foundation pit, trenches, reinforcing them with frames and filling with concrete, and joining the surface with a slab. The trenches are dug from the bottom of the foundation with different depths. The trenches are then joined, thereby forming several closed contours, whose depth increases from the central part of the slab to the edges. The technical outcome is increase in strength of the foundation slab due to effect of the square shaped closed edges in the ground.

EFFECT: increased strength of the foundation slab.

3 dwg

FIELD: constructional engineering.

SUBSTANCE: invention refers to constructions on heaving soils. House footing based on freezing through soils includes a rigid body with flanges and indents from soil side, footing indent inserts made of heat-insulating material, e.g. polystyrene foam at such ratio of flange and footing indent areas that soil pressure from the lower flange surface is not less than standard pressure of frost soil heaving, soil pressure from the lower insert surface is not exceeding design compression resistance of insert material. Also, the said footing contains supplementary heat insulation laid outside of the footing. The upper edge of supplementary heat insulation is passed from external edge of the footing in the form of interrupted inserts through rigid body of the footing and connected to supplementary heat insulation of opposite external edge of the footing. Relative area of interrupted inserts (β=Aint.ins./A0) is given by the relation β≤1-σmax/R, where Aint.ins. is sectional area of interrupted inserts, m2, A0 is gross sectional area of the footing within inserts arrangement regions, m2, σmax is maximum external load pressure in footing material, MPa, R is design resistance of footing material, MPa. Indents and flanges of the footing from soil side are alternating along footing length. Indents centres from soil sides are provided under interrupted inserts centres of supplementary heat insulation from each external edge of the footing.

EFFECT: possibility to lay foundation above the design depth of heaving soil frost penetration level.

4 dwg, 1 tbl

Basement structure // 2334050

FIELD: building.

SUBSTANCE: invention refers to construction of the basements of buildings. The basement structure of a building includes heat - and waterproofing layer (17, 18, 40) which is laid on a flat horizontal surface (51) layer of the material breaking capillary action. The basement structure includes a frame (31) which surrounds specified heat - and waterproofing layer (17, 18, 40), at least, in its top part, thus fixing integrity of basement structure in a horizontal plane and which serves for punctiform bracing of the building supported by basement structure. The specified basement structure is encapsulated with foil (111) from a metal material.

EFFECT: prevention of smell penetration in a building and water-proofing maintenance; possibility of fast and energy conserving erection of the basement.

8 cl, 8 dwg

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