Prefabricated foundation shell

FIELD: construction.

SUBSTANCE: prefabricated foundation shell includes an external shell with an expansion in a lower part, resting against a board or a prepared foundation. The shell comprises flat trapezoidal boards installed vertically, as inclined with equal angles of boards inclination, and with the largest angle of boards inclination, which are opposite to direction of action of highest moment forces, or from jointly installed vertical and inclined boards. The inclined board is made at the opposite side of directing actions of highest moment forces and is parallel to the side of the support board. The joint of mutually crossing trapezoidal boards is made via vertical or inclined as arranged symmetrically to a slot in upper and lower parts of the boards by half of their height. All opposite composite trapezoidal boards have smaller size. In the upper part of the foundation a column base is made as through under single or double branch column.

EFFECT: increased bearing capacity, reduced labour intensiveness and material intensity.

2 cl, 8 dwg

 

The invention relates to the construction, in particular to the construction of prefabricated foundations-shells of industrial and civil buildings.

Known prefabricated Foundation glass type, under mnogovetvevye column, composite made from two types of mutually perpendicular flat plates mounted vertically and having cutouts along the axes of the branches of the columns [1].

The base design is not sufficient load capacity and complexity in the manufacture of composite elements, greater material consumption.

The closest technical solution to the proposed Foundation is a Foundation that includes an outer casing accommodating the filling material of different strength on the horizontal and vertical direction [2].

The disadvantage is the complexity of manufacturing of the Foundation, insufficient bearing capacity.

The purpose of the invention: increasing the carrying capacity, reducing the complexity of manufacture of the structural elements, reduces the time of installation and reduce material consumption.

This object is achieved in that the precast Foundation-shell comprising an outer shell with a widening in the lower part resting on the plate or the prepared base and holds the vertical and horizontal layers of material with different bulk density, and n�longer weight to the side, opposite to the direction of action of the greatest moment effort, the shell Foundation consists of a flat trapezoidal plates, upright and inclined at equal angles of inclination of the plates, and with the greatest angle of inclination of the plates opposite to the direction of action of the greatest moment effort, or jointly set vertical and inclined plates, wherein the inclined plate is made from the opposite side of the direction of the greatest moment effort and parallel to the side of the base plate. The junction of mutually intersecting trapezoidal plates is made through a vertical or inclined symmetrically arranged slots in the upper and lower parts of the plates to half their height, all of the overlying composite trapezoidal plates are smaller, and in the upper part of the Foundation podkolonnik is a through under one - or two-branch column.

Fig.1 shows a precast Foundation-shell with inclined plates, top view under odnopetlevye column; Fig.2 is a vertical sectional view of the Foundation d-D; Fig.3 - item plate with the lower vertical grooves; Fig.4 - element plate with the upper vertical grooves; Fig.5 element plate with the lower inclined grooves; Fig.6 - element top plate with slanted grooves; Fig.7 shows a precast Foundation-shell, top view under dohve�vewwy column; Fig.8 is a vertical sectional view of the Foundation e-E;

Precast Foundation-shell includes a base plate 1, the trapezoidal plates 2 and 3 with the bottom slits 4 and the upper slits 5, the filling material with a large volume weight of 6 and weighing less than 7.

Production technology of works on installation of the Foundation is carried out in the following sequence.

On the prepared substrate is mounted in a known manner precast base plate 1, with a crane mounted trapezoidal elements, plate 3 with a slot 5 is set in parallel, then perpendicular to them are mounted in the slot 5 of trapezoidal plate with 2 slits 4. The subsequent installation of trapezoidal plates similar. Then the inner part of the shell is filled with a material of the vertical layers of different weights.

The proposed design of the base allows to reduce the complexity of manufacturing, to significantly reduce installation time, reduce material consumption, improve the bearing capacity of the Foundation.

Sources of information

1. Copyright certificate of the USSR No. 140751, CL. 84, 2, 1961.

2. Patent RU №2367743, CL E02D, 2007.

1. Precast Foundation-shell comprising an outer shell with a widening in the lower part resting on the plate or the prepared substrate, characterized in that the shell consists of� of flat trapezoidal plates, upright and inclined at equal angles of inclination of the plates, and with the greatest angle of inclination of the plates opposite to the direction of action of the greatest moment effort, or jointly set vertical and inclined plates, wherein the inclined plate is made from the opposite side of the direction of the greatest moment effort and parallel to the side of the base plate, and the junction of mutually intersecting trapezoidal plates is made through a vertical or inclined symmetrically arranged slots in the upper and lower parts of the plates to half their height, all of the overlying composite trapezoidal plates are smaller, and at the top of the Foundation of podkolonnik is a through under one - or two-branch column.

2. Precast Foundation-shell according to claim 1, characterized in that placed on its vertical and horizontal layers of material with different bulk density, with the greatest weight to the side opposite to the direction of action of the greatest moment effort.



 

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