Rectangular closed capacitive structure for water supply and sanitation type of reservoir, constructed on the heaving soil foundations |
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IPC classes for russian patent Rectangular closed capacitive structure for water supply and sanitation type of reservoir, constructed on the heaving soil foundations (RU 2224844):
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The invention relates to the construction, in particular to the construction of sewage and water treatment facilities, constructed on the heaving soil foundations. Rectangular closed capacitive structures, erected on the heaving soil foundations, contains a coating plate, wall panels, rigidly connected with the plate, which is installed directly on the heaving soil Foundation above the boundaries of seasonal freezing with backfill sinuses from local heaving of the soil. What's new is that during the construction of facilities for water supply and sanitation type of tank wall panels installed in a groove of the support feet, the thickness of which under the outer walls, at least two times greater than the thickness of the bottom in the middle of the span capacitive structures for exterior wall panels height from 2.4 to 3.6 m inclusive, 2.5 times more for exterior wall panels height of from 4.2 to 4.8 m inclusive, and three times more for exterior wall panels height of from 5.4 to 6.0 m, inclusive, while supporting the heel is also mounted directly on the heaving soil Foundation above the boundaries of seasonal freezing. The technical result of the invention is one which smesto directly on the heaving soil Foundation of seasonal freezing, as well as a significant reduction in pollution of the environment, without compromising its strength and fracture toughness. 1 C.p. f-crystals, 2 Il.
The invention relates to the construction, in particular to the construction of a closed rectangular water tanks made of precast-monolithic reinforced concrete with different capacity, erected on the heaving soil foundations.
Famous model projects (TP) closed rectangular capacitive structures type of water tanks, approved by the state construction Committee of the USSR TA 901-4-63.83 capacity from 50 to 20000 m3and TA 901-4-69.83 capacity from 50 to 20000 m3intended for construction as part of the treatment facilities of water supply and sanitation, etc.
Construction of external walls, slabs bottoms, nodes, and details of these projects are accepted on the basis of the series, respectively: 3.900-3 issue 4/82 and 3.900-3 issue 15, which is currently disabled.
The closest analogue to the proposed closed rectangular capacitive structure type reservoir is closed rectangular capacitive structure made using standard building designs, products and components for series 3.900.1-10 release 0-2 and release 0-3.
Rectangular closed capacitive structure is 6 6 m, outer wall panels beam type or flat panel height from 2.4 to 6 m of precast concrete, and corner taken as made of reinforced concrete and precast concrete panels connected to the top and bottom and adjacent to the corner panels along the entire height of the welding of the mortgage products reinforcing plates with subsequent monolithic joints, with solid bottom wall panels are joined by welding of reinforcement bars of abutment with the valve plate, columns made of precast concrete, sealed tightly with the bottom end in a concrete Foundation for the variant with walls of flat plates, installed on a monolithic reinforced-concrete bottom, and for a tank of wall panels with reference fifth directly on the plate, beams, supported on columns and exterior walls, and United with them through welding fixtures, cover plates with different types of support wall panels and girders, and United with the latter by welding through the mortgage details, backfill of narcisista material and rises from the soil thickness up to 1, 2 m under the covering.
The main disadvantage of the received analogue is that its design: wall panels, ply, when there are additional efforts in the bottom plate, the outer walls and joints from normal frost heave freezing backfilling with exterior wall panels and uneven frost heaving of the Foundation and backfill sinuses behind the panels adopted from narcisista soil in order to remove the effects of frost heaving of the soil backfill for structures capacitive structures.
In accordance with the instructions SNiP 2.02-83 under such constructions it is necessary to provide an artificial basis of narcisistic materials: sand, gravel, etc. with thickness equal to the estimated depth of seasonal freezing, or provide for pile Foundation with monolithic reinforced concrete raft, and the length of the piles, connected by an anchor in thawed soil layers should provide stability (stiffness) of the grillage from the normal frost heave or, finally, to provide insulation of the soil-the Foundation of this insulation, which would possess the necessary strength and durability without losing their thermal qualities when flooded soils Foundation.
The cost of the device artificial bases (foundations) under these facilities is 15-35% of slivaetsa the complexity of their construction. When using effective insulation of extruded polystyrene foam type FLOORMATE series Styrofoom that can withstand the pressure of 200-700 kPa and preserving their thermal quality and durability in flooded soils, the construction cost increases accordingly by 10-25%.
In addition, the application of artificial reason you want to move large quantities of soil and narcisistic building materials and for the production of extruded polystyrene foam requires additional energy, and technological processes are accompanied by the release of harmful environmental components, which increases pollution.
Most similar in its essence and the achieved technical result is the construction of a rectangular closed capacitive structures erected on the heaving soil foundations, containing a floor slab, wall panels, rigidly connected with the plate, which is installed directly on the heaving soil Foundation above the boundaries of seasonal freezing with backfill sinuses from local heaving of the soil (see, for example, RU 2184375 C1, 27.06.2002, G 01 N 33/24).
The aim of the invention is is placed directly on soil heaving the basis of seasonal freezing, not erecting artificial base of narcisistic materials, or pile foundations with monolithic grillage, or insulation of the Foundation soil extruded polystyrene foam used for backfill sinuses local heaving of the soil displaced during the development of the foundations of the capacitive structure, and as a result, significant reduction in material and labor intensiveness of this capacitive structure, a significant reduction in pollution of the environment, without compromising its strength and fracture toughness.
The objective is achieved due to the fact that in a closed box capacitive structure, erected on the heaving soil foundations, containing a floor slab, wall panels, rigidly connected with the plate, which is installed directly on the heaving soil Foundation above the boundaries of seasonal freezing with backfill sinuses from local heaving of the soil, according to the invention during the construction of facilities for water supply and sanitation type of tank wall panels installed in the groove of the base plate, whose thickness is under the outer walls, at least twice the thickness of the bottom in the middle of the span capacitive structures is Joseph and Nelly height from 4.2 to 4.8 m inclusive, and three times more for exterior wall panels height of from 5.4 to 6.0 m, inclusive, while supporting the heel is also mounted directly on the heaving soil Foundation above the boundaries of seasonal freezing.
In addition, in a rectangular closed capacitive structure bottom and the support feet can be made of reinforced concrete.
The invention is illustrated in the drawings, where Fig.1 shows a cross-section of a rectangular closed capacitive structures erected on the heaving soil Foundation; Fig.2 - dimensions to determine the geometric characteristics of the outer wall beams.
Rectangular closed capacitive structures, erected on the heaving soil Foundation, consists of a base plate 1 type DR-4 or T-4 thickness h monolithic support feet 2 thickness hC, wall panel 3 installed in the groove of the support feet, slab 4, supported at one end on the outer wall panel 3, and the other end to the bolt 14, which is based on the column 12, embedded in the Foundation 13, backfill of the local ground 5, the wall panels are interconnected at the top by a metal rod 6 through the mortgage details, and below concrete heel under wall panels metal stem is noletnim bottom reinforcement editions of 12. Monolithic plate 1 and the support foot 2 is placed directly on the heaving soil Foundation 8 and above are the boundaries of seasonal freezing 9. The tank on the cover plates 4 deboned local soil 10, 11 - notional boundary Namentenga on the outer wall backfilling.
For the perception of extra effort when uneven frost heaving of the Foundation soil under the outer wall panels of the latter are connected at the top and bottom metal rods.
Sources of information
1. M. F. Kiselev. Measures against deformation of buildings and structures from the action of the frost buckling foundations. - M.: stroiizdat, 1971, 101 S.
2. N. A. Tsytovich. Mechanics of frozen soils. - M.: Higher school, 1973-445 C.
3. R. W. Abzalimov. Interaction heaving soils with designs underpasses and the method of their calculation. /The author.dis. on the degree K. T. H. - M.: neisp, 1987, 23 S.
4. SNiP.2.01.01-82. Building climatology and Geophysics. - M.: Gastrolyzer, 1983, 136 S.
5. R. W. Abzalimov. Patent No. 2184375. The method of determining the weight of the soil freezes on the walls of underground structures in continuous frosty frost heaving under construction. Priority from 06.1 East soils. - M.: Transport, construction, 2001, No. 3, S. 13-16.
7. Instructions for the design of structures prefabricated buildings. VSN 32-77. - M.: stroiizdat, 1978, 177 S.
8. Manual calculation of large-panel buildings./ Characteristics, stiffness of the walls, elements and compounds of large-panel buildings. - M.: stroiizdat, vol.1, 1974, 41 S.
9. R. W. Abzalimov. Calculation of tanks for heaving soils. - Industrial and civil construction, 2000, No. 1, S. 45-46.
Claims 1. Rectangular closed capacitive structures, erected on the heaving ground bases containing the coating plate, wall panels, rigidly connected with the plate, which is installed directly on the heaving soil Foundation above the boundaries of seasonal freezing with backfill sinuses from local heaving of the soil, characterized in that during the construction of facilities for water supply and sanitation type of tank wall panels installed in a groove of the support feet, the thickness of which under the outer walls, at least two times greater than the thickness of the bottom in the middle of the span capacitive structures for exterior wall panels height from 2.4 to 3.6 m, inclusive, 2.5 times more for the exterior with the of 5.4 to 6.0 m, inclusive, while supporting the heel is also mounted directly on the heaving soil Foundation above the boundaries of seasonal freezing. 2. Rectangular closed capacitive structure on p. 1, characterized in that the bottom and support feet made of reinforced concrete.
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