SU949080A1 - Joint between wall and foundation - Google Patents

Description

one

The invention relates to the construction, in particular to butt joints of walls with the foundation for structures on unevenly settling foundations - undermining, subsiding, etc.

The butt joint of the column with the foundation is known, which makes it possible to adjust the position of the column in case of uneven subsidence of the base, carried out by jacking up the column using a slip seam between the side surface of the column and the monolithing concrete. In order to improve the pressure distribution over the column support part, bulk material is supplied to the bottom of the base glass through an inclined opening in the column fll.

The disadvantage of this joint of the column with the foundation is the impossibility of self-regulation of the position of the column in case of uneven subsidence of the base.

The closest technical solution to the invention is the butt joint of a wall element (column) with foundations. a volume that includes the edges of the foundation, forming a groove for placing the wall (2.

The disadvantage of this joint of the column with the foundation is also the lack of the possibility of self-regulation.

5 positions of the column with uneven subsidence of the base.

The purpose of the invention is to provide self-regulation of the position of the wall of a structure erected on an unevenly subsiding base, increased tightness of the joint and long-term operation of the elastic tank.

The goal is achieved by the fact that at the butt joint of the walls with the foundation, including the foundation ribs, forming a wall slot, the gap between the side wall surface and the base edges is filled with bulk material and sealant, and in the gap between the bottom of the base groove and the bottom of the wall

20 elastic container with a working environment; closed on the perimeter of the walls.

In addition, the lateral surface of the wall is fitted with support-friction elements in contact with the latter through

friction devices, and with foundation ribs - by means of consoles.

FIG. 1 shows the butt joint of the wall with the foundation; in fig. 2 - the friction element, the node I in FIG. one; in fig. 3 is a section A-A in FIG. 2; in fig. 4 is a view of the wall when the wall and the foundation are working without mutual displacement; in fig. 5 - view of the wall with unevenly settling base; in fig. 6 is a sectional view in FIG. 5 (sifting basement area); in fig. 7 is a sectional view BB in FIG. 5 (non-penetrating basement area).

FIG. 1 shows the butt joint of wall 1 with the foundation 2. Directly between the bottom 3 of the groove in the foundation 2 and the base 4 of the wall 1 there is an elastic container 5 with the working medium 6. The gaps in the groove between wall 1 and the ribs 7 are filled with bulk material 8 and sealant 9. Wall 1 is provided with support-friction elements 0. Support-friction elements contact with side surfaces of wall 1 through friction device 11, and with ribs 7 of foundation 2 through consoles 12. Support-friction device consists of outfits 13 in wall 1, cat The bolts 14 through the gasket 15 and the elastic element 16 are pressed against the plate 17 with oval holes 18. A plate 12 is attached to the plate 17, in its lower part, reinforced with a scarf 19.

Butt joint walls with the foundation works as follows.

With uneven deformations of the base, the foundation, being a fairly flexible element, follows it. At the same time, the non-subsurface area of the foundation rises, and on the sagging area, the pressure decreases from the weight of the structure, which causes a partial displacement of the working medium in the elastic tank from the elevated areas to the reduced pressure areas before leveling it. The height of the cross section of the elastic tank 5 on the sieved part of the basement increases (Fig. 6), and decreases on the mendried frame (Fig. 7), providing a uniform draft of the wall. Support-friction elements due to the contact of the consoles with the ribs 7 of the foundation 2 provide a stable position of the walls during installation. The presence of a friction joint between the supporting-friction elements and the wall during the installation period completely and during the operation period partially relieves the storage capacity, which increases its durability before the beginning of uneven subsidence-base. In the initial position (Figs. 1 and 4), when the foundation and the wall are working without mutual displacement, the weight of the wall and the loads applied to it are distributed in the calculated ratio between the elastic capacitance 5 and the friction device I. The magnitude of the dry friction forces over the contact surface The friction device between the parts 13 and 17 is set by the elastic element 16 by screwing the bolts 14 into the embedded part 13 with the control of the pressing force (screwing the bolts) with a torque wrench. Support-friction devices work with different, in the process of building construction, operational bearing properties. When mounting, the friction devices are adjusted to completely unload the elastic tank, i.e. they perceive all loads from the structure; after the partial (calculated) unloading of the elastic tank is installed. In the sagging area of the foundation, due to the increase in the height of the transverse-sectional section of the elastic tank 5 of the console 12, they lose contact with the ribs 7, and therefore the friction devices are turned off (fig. 6, section BB in fig. 5). The subsidence of the base is accompanied by a uniform draft of the wall, therefore, on an open-out part of the foundation, where loads increase, support-friction devices work, i.e., friction between parts 17 and 13 is overcome, and consoles 12 remain in contact with ribs 7 (Fig. 7, section B -B in Fig. 5).

Thus, the support-friction devices, by unloading the elastic tank, create conditions for its long-term service until the base sinks, while at the same time they do not hinder the self-regulation of the position of the walls with uneven base drawdowns. Due to the fact that the elastic container 5 is constantly under pressure and in contact with the base 4 of the wall and the bottom of the 3-groove, the joint has an increased tightness.

The use of a butt joint between the walls and the foundation provides the possibility of self-regulation of the position of the walls of the structure erected on an unevenly subsiding foundation, a stable position of the walls during installation, as well as an increased tightness of the joint.

Claims (2)

1. The butt joint of the wall with the foundation, including the edges of the foundation, forming a groove for positioning the wall, characterized in that, in order to increase the tightness of the joint and ensure self-regulation of the wall of the structure erected on an unevenly subsiding base, the gap between the lateral surface of the wall and the edges of the foundation is filled bulk material and sealant, and in the gap between the bottom of the groove of the foundation and the bottom of the wall is mounted an elastic container with a working medium, closed around the perimeter of the walls. 2. The connection according to claim 1, characterized in that, in order to ensure the long-term operation of the elastic container, the lateral surface of the wall is provided with support-friction elements in contact with the latter through friction devices, and with the edges of the foundation by means of consoles. fug. 2 Sources of information taken into account in the examination 1. USSR Author's Certificate for Application No. 2894777 / 29-33, cl. E 02 D 27/34, 1980. 2. USSR author's certificate No. 654758, cl. E 02 N 27/34, 1977 (prototype).