SU1231146A1 - Foundation of building erected on swelling soil - Google Patents

Description

The invention relates to the construction and can be used mainly in the construction of buildings, structures on swelling soils.

The purpose of the invention is to eliminate swelling deformations and increase the bearing capacity of the base.

In the proposed foundation of the building, structures on swelling soils, including a foundation block, supported on a concrete slab mounted on a cushion of non-crushed soil, and located in the ground of the foundation under the pile cushion, the cushion is made in two layers with an upper compacted layer and a bottom layer having the porosity coefficient is not less than 0.8, while the piles are made of loose non-seamy ground with a porosity coefficient equal to the porosity coefficient of the bottom layer of the pad.

The drawing schematically shows the proposed Foundation, a cross-section.

The foundation includes a foundation block 1, supported by a concrete slab 2, mounted on a pillow of non-heaving soil, the upper layer 3 of which is compacted, and the lower layer 4 has a coefficient of porosity of at least 0.8, with piles located under the pillow in the swelling soil of the base 5 6, made of loose loose soil with a coefficient by Editor M. Dzhin Order 2544/34

Compiled by Yu. Pudov

Tehred V. Kadar Proofreader L. Pilipenko

Circulation 641 Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

rusti, equal to the ratio of the porosity of the lower layer of the pillow.

The method for erecting the proposed foundation is as follows.

First, at the base 5 of the swelling soils, drill the wells and fill them with sand or other non-refractory soil without compaction, forming piles 6, then cover the bottom surface with non-refractory soil cushion 4 without compaction, with the top layer 3 of the pillow from a non-rocky soil and compact it, after which a concrete slab 2 is placed on the surface of the cushion, on which the foundation block 1 is placed.

The implementation of the bottom layer of the pillow and piles of non-rocky soil with a porosity ratio of at least 0.8 allows you to completely eliminate deformations of the swelling of the base soil by providing the possibility of quenching. neither the deformations of the 1-span and the deformations of the compaction on the weight of the building, the structures in the lower layer of the cushion and in the piles that were filled without pre-compaction. In the process of settling of the base, under the weight of the building, construction and deformations of the swelling of the base soils, compensation of the deformations of the sediments and deformations of the swelling occurs due to partial soil compaction of the lower layer of the pillow and piles, which leads to an increase in the bearing capacity of the base.

Claims (1)

THE BASE OF THE BUILDING, STRUCTURES ON SWELLING SOILS, including the foundation block, resting on a concrete slab mounted on a cushion of non-porous soil, and located in the ground of the base under the cushion of the pile, characterized in that, in order to avoid swelling deformations and increase the bearing capacity , the pillow is made two-layer with the upper compacted layer and the lower one having a porosity coefficient of at least 0.8, while the piles are made of loose non-porous soil with a coefficient of porosity equal to the coefficient the porosity of the lower layer of the pillow. SU „„ 1231146 1 123