Method of industrial building foundation construction

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

 

The invention relates to the field of industrial construction and can be used in the construction of a piled-raft foundations for industrial buildings and structures, in particular for the main building of thermal power plants.

A known method of construction of pile Foundation of the main building Shaturskaya GRES, described in the book Kuptsova I.P. Design and construction of thermal power plants, M.: Energy, 1972, page 114. The method includes operations on execution of bored piles and construction on the heads of the finished piles of monolithic reinforced concrete grillage. When this exercise hard sealing heads of the piles in monolithic grillage.

Constructed using a method similar to the rigid base of the plant perceives well the static load of the weight of the upper structure and placed in it the process equipment. However, for dynamic damping of vibration of the building from the work of technological equipment additionally construct a special vibration-insulating foundations directly under machines with dynamic loads.

When the grillage thermal stresses, thermal Cycling deformation grillage lead to the loosening of the pile and reduce their carrying capacity.

The prototype of the claimed invention is a method of construction seismology the CSO Foundation for industrial buildings, in the particular case of the generator, is protected by US patent 5610962, IPC 7 G 21 C 13/024, published 11.03.97. The Foundation is erected based on a natural underground rock unconformity. On drilled piers construct is embedded in the ground horizontal reinforced concrete grillage with a vertical concrete wall on the periphery. Vertical wall grillage bring up the level of plan, resulting form a waterproof basement space structures. At the bottom of the cellar establish sets of elastic vibration-damping supports and place them independently of each other, the industrial structure of the object.

Offline location of the object structures on separate sets of vibration-damping supports designed to reduce the seismic loads on the structure and maintain the structural integrity of the object during the earthquake. Reduce the level of vibration of the Foundation are also by organizing bulk stabilizing the soil of the shaft along the perimeter of the vertical walls of the raft.

The method of the prototype provide the foundations for nuclear and other power plants, as well as other environmentally hazardous facilities in areas of high seismic activity while ensuring the earthquake resistance of structures for the upper class.

The disadvantage of the prototype is a is a large amount of excavation and concrete work and long-term structures of the Foundation.

The claimed invention solves the problem of construction of cost-effective, reliable and durable Foundation for industrial plants, in particular for thermal power plants of small capacity in areas of low seismic activity.

In accordance with the claimed invention erect the Foundation as follows:

arrange bored piles; in the direction of the marked axes of the building into the heads of piles, lay anchor rebar and zamonolichivajut her; on the heads of piles set of elastic vibration-damping support and fix their limited-movably in the plan to anchor the valve using fasteners; on vibration-damping supports mounted rigid metal base frame upper structure, set in a frame anchor fittings for attaching the upper frame structure, through the holes in the beams of the base frame paving reinforcing rods, network communication and then manalicious frame, creating a slab Foundation.

Individual depth of piles is determined by the results of engineering-geological reconnaissance of the ground at the location of their facilities. All or part of the piles can be made of the hanging. For hanging piles form the broadening. Head piles up above the level of the plan for the organization of high grillage. Piles come in the form of SV is logo field.

Anchor fittings for limited-rolling in terms of mounting the vibration-insulating support to the pile are in the form zamonolichennymi in the head of the pile anchor bolt. In connection vibration-damping bearing plate pile Foundation with anchor bolts perform radial clearance.

For items of precast-monolithic slab Foundation select materials with almost identical temperature coefficients of linear expansion.

The invention is illustrated by drawings, figure 1 which depicts the pile field in the plan, figure 2 - bored piles, frontal section, figure 3 - head bored piles with vibration-isolating support grillage (type I, figure 2), figure 4 - type II figure 2, figure 5 - broadening the piles.

The inventive method is as follows.

In accordance with the layout of the construction site suit piles. Individual depth of piles from level 1 plan 2 is determined by the results of engineering-geological reconnaissance of the soils at the construction site of piles with respect to the nature of the layers, their physico-mechanical and deformation properties, and characteristics of constructed enterprises and properties of building materials. If necessary for the hanging piles form ening 3.

In the manufacture of pile 1 in them install a reinforcing frame 5 and the anchor bolt 6. The anchor is passed the bolt 6 being put into the head of the piles on marks axes constructed. The head of the pile 1 raise above the level of the plan 2 for the organization of high grillage 7.

Providing a flat surface heads of the piles, they set the vibration-insulating support 8 for slab Foundation 7 and fixed on the anchor bolts 6 and nuts 9 with washers 10. The presence of a radial gap “δ” in the connection of the vibration-insulating support 8 with anchor bolt 6 provides limited mobility of the vibration-insulating support 8 in the plan.

On vibration-damping supports mounted metal beams 11 of plate grillage 7 and fastened to the supports fastening parts 12, 13. Metal beams 11 connect the fasteners 14, 15 between a rigid metal base frame 16 of the upper structure 17, is placed in a design position of anchor reinforcement 18 for attaching the upper frame structure 17, through holes 19 in the beams 11 of the base frame 16 are laid reinforcing rods 20 and network communications, in particular technological pipelines 21 and cable boxes 22.

On bottom of metal beams 11 the scaffolding plate 23 of the grillage.

The material items of precast-monolithic grillage 7 (metal beams 11, concrete etc) pick up with almost identical temperature coefficients of linear expansion. Then omelicheva (for example, concreted) plate pile cap 7, a limited peri is the EPR metal beams 11.

Further, the upper frame structure 17 mounted on the beam 11 grillage 7 and fastened to them rigidly with zamonolichennyj in the Foundation anchor bolts 18.

The inventive method of Foundation construction for industrial buildings reduces the amount and the cycle of work performed. Accommodation on the heads of the piles is limited-moving in terms of the vibration-insulating supports allows you to simplify and accelerate the installation of the supporting frame grillage regardless of errors displacement piles relative to the axis of the pile field and approved at stuffing piles of errors of the form.

Erected by the claimed method, the Foundation provides high stability due to the uniform transfer on the ground of the static load, the effective damping of the dynamic loads and temperature compensation of deformations. Precast-monolithic design of grillage provides continuity plates under all load types - vertical, horizontal distance, bending, thermal Cycling. When this sediment, subsidence, horizontal displacement, roll, etc. built on the Foundation of the building meet the technological and architectural requirements, including requirements for normal operation of the equipment. Performance of production equipment is provided without special vibration is of fundamental directly under the equipment and without straightening equipment during operation. The role of foundations for machines with dynamic load takes the grillage.

Thus, the claimed invention allows to reduce the cost of construction of the Foundation for industrial facility with process equipment, creating a dynamic load, reduce the time of its construction while maintaining reliability and durability.

1. The method of construction of foundations for industrial buildings, including the main building of thermal power plant, including the installation of bored piles, monolithic slab Foundation and installation of vibration-damping supports, characterized in that in the direction of the marked axes of the building into the heads of piles, lay anchor rebar and zamonolichivajut her; on the heads of piles set of elastic vibration-damping supports, fix their limited-movably in the plan to anchor the valve using fasteners; on vibration-damping supports mounted rigid metal base frame upper structure, set in a frame anchor fittings for attaching the upper frame structure, through the holes in the beams of the base frame lay reinforcing rods, network communication and manalicious frame, creating a slab Foundation.

2. The method of construction of the Foundation for the industrial construction according to claim 1, characterized in that Ostriv who are hanging bored piles.

3. The method of construction of foundations for industrial buildings according to any one of paragraphs. 1 and 2, characterized in that the individual depth of the pile is determined by the results of engineering-geological reconnaissance of the ground at the place of construction of the piles.

4. The method of construction of foundations for industrial buildings according to any one of paragraphs. 1-3, characterized in that the shape of the broadening of the bored piles.

5. The method of construction of foundations for industrial buildings according to any one of paragraphs. 1-4, characterized in that the head piles up above the level of the plan for the organization of high grillage.

6. The method of construction of foundations for industrial buildings according to any one of paragraphs. 1-5, characterized in that the piles come in the form of a pile field.

7. The method of construction of foundations for industrial buildings according to any one of paragraphs. 1-6, characterized in that the anchor reinforcement for limited-rolling in terms of mounting the vibration-insulating support to the pile are in the form zamonolichennymi in the head of the pile anchor bolt.

8. The method of construction of foundations for industrial buildings according to any one of paragraphs. 1-7, characterized in that the connection of the vibration-insulating support slab Foundation with anchor bolts perform radial clearance.

9. The method of construction of foundations for industrial buildings according to any one of paragraphs. 1-8, characterized in that the element is s precast-monolithic slab Foundation select materials with almost identical temperature coefficients of linear expansion.



 

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The invention relates to the field of construction

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 to construct pile foundation in territories with severe climatic conditions.

SUBSTANCE: pile foundation with grillage includes piles driven in seasonally frozen heaving soil, grillage to connect pile heads supported directly by heaving foundation soil. Pile heads have reinforcement rod projections extending for at least 150 mm and welded with anchoring rods located in grillage body. Summary area of extended reinforcement of one pile, maximal pile stretching force and actual value of pile foundation buckling are determined from given relations taking into consideration that maximal admissible relative buckling difference is to be more or equal to actual value.

EFFECT: reduced material consumption and labor inputs, increased reliability and enhanced pile foundation operation during building and building structure usage.

3 dwg, 1 ex

FIELD: building, particularly to erect separate multistory buildings, which transmit large vertical and horizontal loads to building foundations.

SUBSTANCE: foundation comprises piles grouped in crossing pile pairs and provided with common widened member. The foundation includes crossing injection piles arranged along pyramid ribs. Lower pile ends are connected by camouflet widening members. Upper pile ends are connected with piles of adjacent groups by grillage made as mat on resilient base. The mat extends outside the outline of over-ground building part.

EFFECT: increased building stability and reduced stresses in building base and over-ground part.

2 dwg

FIELD: construction, particularly pile foundations to be erected in seismic territories characterized by earthquake intensities of 9 or 10 points.

SUBSTANCE: pile foundation has intermediate pad arranged so that upper pad surface is flush with designed ground surface mark. During foundation erection two or three pile rows are arranged directly under grillage. One or two pile rows used for foundation base reinforcement outside foundation contour extend in both directions from foundation center. Sliding member having low friction coefficient is arranged at grillage base. The sliding member is covered with concrete mattress. Reinforcement bars of monolithic grillage used for independent column foundation erection may be formed as reinforcing cage. The reinforcing cage includes transversal reinforcement bars and free length of maim reinforcement bars.

EFFECT: decreased horizontal seismic impact to building superstructure.

2 cl, 3 dwg

FIELD: construction.

SUBSTANCE: method for erection of slab-pile foundation includes arrangement of pile field and foundation slab with conical hollow holes arranged in it. In process of building erection access is provided to conical holes of slab-foundation grill, and as time elapses when slab-foundation grill achieves rated settling, which equals 1/2 of permissible value for this type of buildings, all conical holes are filled with concrete.

EFFECT: increased bearing capacity of foundation, reduced settling.

2 dwg

FIELD: construction.

SUBSTANCE: method of soil reinforcement may be used in strengthening and arrangement of bases with any soil conditions, in particular, weak natural bases and unsteady soils. A contour of reinforced concrete support falsework is defined, within the borders of which they install a set of at least three longitudinal hollow elements that represent a tubular-pillar falsework, and they are submerged into soil. On shore they determine the sufficient quantity of reinforcement zones. Piles are placed in each of specified elements, a reinforcement zone, under different angles to the surface of the specified support and with protrusion of each pile beyond the border of the lower perimeter of the appropriate element with formation of vectors of forces that compensate load at specified soils. Along the formed contour they assemble the falsework that covers upper heads of piles, they fill the longitudinal hollow elements with concrete and form the reinforced concrete support.

EFFECT: increased strength of a soil base due to installation of piles and increased area of their resting against soil with simultaneous reduction of labour intensiveness and material intensity.

3 cl, 3 dwg

FIELD: construction.

SUBSTANCE: punched micropile foundation with a grill part comprises several foundation modules of factory readiness, comprising solid micropiles and a part of a solid grill, during submersion of which by punching method there is increased area of compacted soil of the base produced with improved strength and deformation characteristics, as a result of which the bearing capacity of the foundation increases significantly, deformations of foundation soils are reduced, material and technical resources are decreased, and time of works performance is less.

EFFECT: increased bearing capacity of a foundation, reduced deformations of base soils, reduced material and technical resources and reduced time for performance of works of foundation arrangement.

4 dwg

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.

4 dwg

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