SU1294918A1 - Base under foundation - Google Patents

Abstract

The invention relates to the construction, in particular to the foundations of buildings and structures, an advantage on alluvial or bedded soils, underlain by weak soil. The purpose of the invention — an increase in the bearing capacity of the base — is achieved by making the reinforced layer 3 in the form of a soil layer with a thickness not exceeding 3.5 the width of the foundation 1. Individual elements are dispersed in this layer, and. E / d 800, and Vp / V, - 250-350, where i - the length of the element; d is the transverse size of the element; Vfp - soil volume; V is the total volume of elements. 2 Il. (P

Description

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 X N / VN / S / V /

figure 1

1129

The invention relates to the construction, in particular to the foundations of buildings and structures, mainly on alluvial or natural soils, underlain by weak soil.

The purpose of the invention is to increase the bearing capacity of the base.

FIG. 1 depicts the proposed basement of the foundation, a cross-section, the execution of strip or columnar foundations; in fig. 2 - the same, the execution of the foundation in the form of a shallow pile.

The proposed foundation 1 includes an array of soil 2 with a reinforcing layer 3. Reinforcing layer 3 is made in the form of a soil layer with a thickness not exceeding 3.5 times the width of foundation 1, in which individual elements are dispersed. And

i. .

Vr,

.

, 800, and - 250-350,

where is the length of the element; d is the transverse size of the element; . p - the volume of soil; Vg - the total volume of elements.

As separate elements, metal, synthetic or other materials, preliminarily ground into segments of zero length, are used, whose modulus of elasticity

3.0 MPa (the most appropriate use of waste production of chemical and light industry). Randomly located throughout the soil volume, short, individual elements overlap all possible shear planes, providing, by increasing the contact surface between the reinforcement, which are the individual elements 4, and the soil, the increased bearing capacity in both vertical and horizontal directions. and significantly reducing the deformability of the base, as well as its complexity.

The reinforcing layer 3 is produced during the formation of the carrier array from the bulk or alluvial soil. After the soil has been packed or removed to the required level, one of the known methods (hydromechanical, dumping) is delivered into the soil delivered to the place of laying. items.

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, 20

15

25

thirty

35

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. 0 -55

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In the hydromechanical method of laying the soil, individual elements are introduced directly into the pulp, where it is mixed with the soil under the influence of turbulent movement of water.

The mixture obtained in this way is delivered to the place of installation and spreads along an alluvium plug. Under the influence of gravity, water, filtering, goes into the lower layers of the base, precipitating and solid armature mixture in layers. The saturation of the pulp is separate-. These elements are produced until the required power of the reinforced layer 3 is reached. Next, the map is zaped up to the level marks with ordinary pulp.

I

In the case of osski, the soil with separate elements is mixed mechanically (for example, using concrete mixers). The mixture laid in the base is compacted in layers by one of the known methods (tampers, rollers). After the reinforced layer 3 has reached the required power, the dumping is then carried out in the usual way.

The proposed basement allows increasing stability and bearing capacity under the influence of combined loads, reducing labor intensity and material intensity due to the use of cheaper materials and simplifying the technology of introducing elements into the soil.

Claims (1)

Invention Formula The base of the foundation, which includes an array of soil with a reinforced layer, characterized in that, in order to increase the bearing capacity of the foundation, the reinforced layer is made in the form of a layer of soil with a thickness not exceeding 3.5 pshriny foundation, in which individual elements are dispersed I 800, and J 250-350, where t is the length of the element; d is the transverse size of the element; fp soil volume; V is the total volume of elements. N / X / VVV / x / v X / Editor I. Derbak Compiled by T. Ponomareva Tehred L. Serdyukova Order 569/31 Circulation 607 VNIIPI USSR State Committee inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 fg / 2.2. Proofreader M. Subscription