SU699105A1 - Foundation construction method - Google Patents

Description

(54) METHOD OF MANUFACTURING FUID.MENT

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The invention relates to the field of construction and relates to a method for constructing a foundation of a building or a structure on subsidence soils with 1 type of soil conditions on subsidence.

There is a method of constructing the foundation of ng subsiding soils, including ramming the foundation pit in the ground and filling it with monolithic concrete 1.

The disadvantage of this method of foundation devices is the limited carrying capacity for horizontal loads.

The closest to the proposed invention is a method of making a foundation, which includes ramming a foundation pit in the soil, filling it in the lower part with hard concrete or rubble, tamping the latter into the soil and placing the concrete 2 in the pit.

The foundation made in this way also has insufficient bearing capacity.

The purpose of the present invention is to increase the carrying capacity.

This goal is achieved by the fact that in a known method of making a foundation that includes a pit in the ground, filling its bottom with hard concrete or rubble, tamping it into the ground and laying the pit in the pit, the layer of rubble is laid on the surface of the ground beforehand. The excavation of the excavation is inspected through a layer of rubble with a rammer with an expanded upper end, and in the process of extrusion of the excavation, crushed stone is additionally poured into it.

FIG. 1 shows dumping rubble; in fig. 2-7 is an intermediate stage of ramming a pit in the ground; in fig. 3 -, rammed pit in the ground; in fig. 4 - ready foundation.

The foundation pit is manufactured as follows. A layer of rubble 2 is poured onto the surface of the soil 1, a trench -5 is extruded with a tamper 3 with an expanded upper end, and then crushed stone 2 or hard concrete is poured into the bottom of the trench 5, which is rammed into the bottom of the trench 5. At the same time

tamper 3 rammed crushed stone 2 into the side walls of the pit 6 and creates a zone of compacted soil 7, and after additional rubble 2 or hard concrete, expansion 8 of the lower part of the foundation 9 is created, while broadening the upper end 4 of the tamping 3 creates a broadening in the upper part of the pit 5 with an enlarged compacted soil zone 7. After the trench 5 is fully worn out, it is filled with monolithic concrete 9, from which the foundation body 9 is formed with a cup 10 intended for the subsequent installation of the column.

Claims (2)

1. The method of making the foundation, which includes the cat / o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o ig .. lane, filling its lower part with hard concrete or rubble, ramming the latter into the ground and placing concrete into the excavation pit, characterized in that, in order to increase the carrying capacity, a layer of rubble is laid on the surface of the soil, and tamping down the excavation is carried out through the layer of expanded rubble with expanded top end. 2. A method according to claim 1, characterized in that during the process of ramming the excavation pit, crushed stone is additionally added to it. Sources of information taken into account in the examination 1. “Foundations, foundations and soil mechanics No. 1, 1977. Signed for printing 6 / 1-1977, p. 5-7. 2. Platonov E.V. Printed rafts. Editing construction literature. L.-, 1938, p. 6, 7. Ft z ig.Z