RU2231599C2 - Load-bearing support structure - Google Patents

Abstract

FIELD: industrial and civil building, particularly for roads, aerodromes, foundations for different structures building on soft ground.

SUBSTANCE: support structure has base formed of thin-walled members and support cover. Members are convexo-concave in longitudinal direction and extend at an angle to vertical plane. Members are also convexo-concave in transversal direction.

EFFECT: increased load-bearing capability, provision of stable spatial position under static and dynamic conditions and, as a result, possibility of structure building on soft ground, permafrost ground and in seismic regions.

2 cl, 7 dwg

Description

The invention relates to industrial and civil engineering and can be used in the construction of roads, airfields, bridge supports, high-voltage masts, chimneys, towers of tall buildings, foundations for various structures, as well as in the construction of any structures on soft and permafrost soils and in earthquake-prone areas .

A known supporting structure in the form of a flexible multilayer coating of soil pads for the rapid construction of roads and airfields, containing layers of soil reinforced with spatial or flat geogrids, flexible separation layers of high-strength geotextiles between them, while the geogrids are displaced one relative to another and vertically bonded to each other are flexible bonds with the formation of closed cells, the separation layers are prestressed, and the canvas of the upper bearing layer is made of water impermeable geotextile, and each section of the geogrid is a flexible module consisting of flexible plates of convex-concave shape fastened by linear seams (RU No. 2044813, class E 01 C 5/00, 09/27/95).

However, this design, despite certain advantages, has its limited use and is significantly material intensive.

Known is a supporting support structure comprising a plate, on the supporting surface of which there are hooks in the form of protrusions and a convexly curved anchor element with a lateral surface inclined laterally from the center of the base of the plate to its periphery and having closed arcuate sections protruding beyond the outline of the base of the plate by an amount not less than the thickness of the protrusion (RU No. 2107768, class E 02 D 27/02, 03/27/98).

However, this design, despite certain advantages, is quite material intensive and is due to the accuracy of its implementation.

Known support structure containing a base of thin-walled elements and a support coating (FR No. 2728597, CL E 02 D 27/26, 06/28/96).

However, this bearing support structure is significantly material intensive.

The closest in essence and the technical result achieved is a supporting support structure containing a base of thin-walled elements and a support coating, the base elements being made convex-concave in the longitudinal direction and located at an angle to the vertical plane (see RU 2032790 C1, 04/10/1995 E 02 D 27/02).

The claimed support structure is devoid of the above drawbacks and is most industrially applicable in operation due to its high bearing capacity and constant spatial position in a static and dynamic state, regardless of the magnitude of the vertical active and reactive forces and heaving forces, as well as horizontal displacement forces.

The solution to this technical problem is achieved by the fact that in the supporting support structure comprising a base of thin-walled elements and a support coating, the base elements being made convex-concave in the longitudinal direction and arranged at an angle to the vertical plane, according to the invention, the base elements are made convex-concave and in transverse direction.

In addition, when arranging structures rectangular in plan, thin-walled elements can form a cellular system with diverging and converging downward elements in the cells.

The invention is illustrated by drawings, where

figure 1 shows a General view of the supporting structure;

figure 2 - convex-concave base of the supporting support structure, made in the form of a cellular system;

figure 3 is the same in the form of a spiral;

figure 4 is the same, with diametrically oppositely spaced at the same distance from the center, respectively, convex and concave elements of the base;

figure 5 is the same, in the form of a five-cell system with one cell in the center and with four at the same distance from the center - from the outside;

Fig.6 is the same, in the form of three equidistant ellipsoid petals;

Fig.7 shows a convex-concave base in a perspective view. The supporting base structure of the foundation contains a base 1 of thin-walled elements 2 and a supporting coating 3. The thin-walled elements 2 of the base 1 are made convex-concave in the longitudinal and transverse directions and are located at an angle to the vertical plane. When erecting structures rectangular in plan, the convex-concave base 1 is made in the form of a cellular system with thin-walled elements 2 diverging and converging to the bottom of the cells 2. The convex-concave base 1 can be made in individual cases, depending on the structure being constructed, in the form spiral 5 with a laterally inclined lateral surface with diverging slope from bottom to top.

When constructing the foundations of television and radio masts, supports of high-voltage power lines, chimneys and towers, high-rise buildings, the convex-concave base 1 is made with diametrically oppositely located at the same distance from the center (circumference) respectively convex 6 and concave 7 elements, with elements 6 and elements 7 are located on mutually perpendicular diameters and with an expanding slope of the lower part of thin-walled elements, i.e. towards the removal then the center of the base.

To build the foundation under the towers, buildings or high masts, the convex-concave base 1 is made in the form of a five-mesh system with a central cell 8 and with four outer cells 9 located at the same distance from the center of the base.

To increase the holding moment from the overturning of tall towers, buildings or masts, the convex-concave base is made in plan in the form of three equidistant ellipsoid petals 10, converging to the center and adjacent to the small circumference 11 of the base with a convex-concave outline.

In all cases of the construction of the base 1, thin-walled elements 2 (depending on the soil) are either installed by pressing it into the ground with further filling the base with soil, or they first tear the trench, install thin-walled elements of the base into it, fill the base from the inside and outside with soil and fix the support coating.

When the supporting plate 3 is exposed by active vertical and horizontal forces, the supporting coating bends and a deflection bowl is formed with a radius of tens of kilometers and a size within 1-4 cm. This deflection cup turns the thin-walled elements in the vertical plane with the outer part in the direction opposite to resultant active forces. When turning thin-walled elements, their lower part moves by a larger amount than the upper, thus redistributing the vertical force in the horizontal plane.

Since thin-walled elements are made convex-concave in the longitudinal and transverse directions and are located at an angle to the vertical plane with a laterally inclined lateral surface with a diverging slope from bottom to top, not only weakened soil located around the elements is involved in their work , but also the masses of more durable deep soil layers located below the thin-walled base elements. Moreover, the greater the active forces act on the support coating, the greater the masses of the more durable deep layers of the soil are involved in the thin-walled base elements in the work. At the same time, a maximum horizontal and partially vertical reactive rebound of the soil is applied to the active forces applied to the support coating.

The proposed design of the supporting support structure provides its high bearing capacity and the constancy of the spatial position in a static and dynamic state, regardless of the magnitude of the vertical active and reactive forces and heaving forces, as well as horizontal displacement forces (from temperature, slope, etc.), which gives the ability to erect various structures on weak and permafrost soils and in earthquake-prone areas.

Claims (2)

1. Bearing support structure comprising a base of thin-walled elements and a support coating, and the base elements are made convex-concave in the longitudinal direction and are located at an angle to the vertical plane , characterized in that the base elements are made convex-concave and in the transverse direction. 2. The supporting support structure according to claim 1, characterized in that when the rectangular structures are installed, thin-walled elements form a cellular system with diverging and converging elements in the cells.

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