SU1758181A2 - Insert - Google Patents

Abstract

Mortgage item. Purpose: The invention relates to the construction, in particular to the embedded parts of prefabricated reinforced concrete structures, and is an improvement of the embedded part described in the ed. St. N 1513097. Summary of the invention: the base piece comprises a plate 1 with strip anchoring elements 2 made in the form of a ravnolevochny angular profile. The angle between the flanges of the profile varies along the length of the anchor element within 80-180 ° C, respectively, from the tail part of the anchor element to the plate 1. The tail part of each anchor element has protrusions located along the length of the tail part with increasing height to the end of the strip. The protrusions on the tail section can be made of various shapes in accordance with the auth.St. No. 1513097. 4 Il.

Description

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WITH

The invention relates to construction, in particular, to means for connecting building structures and is an improvement of the embedded part described in ed. St. Mg 1513097.

FIG. 1 shows the embedded part, general view; FIG. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. one; in fig. 4 shows a section B-B in FIG. one.

The embedded part comprises a plate 1 with strip anchors 2, which are made curved perpendicular to the longitudinal axis. The bend angle varies from 90-180 ° C, respectively, from the end of the tail part of the anchor element 2 to the plate 1. The tail part of each anchor element 2 has protrusions 3 located along the length of the tail part, which can be made of different shapes in accordance with the author. St. No. 1513097.

With a curved perpendicular to the longitudinal axis of the profile of the anchor strip elements 2, their rigidity significantly increases and the degree of deformation in the transverse and longitudinal directions decreases when exposed to cyclic alternating loads of seismic type.

This not only increases the strength of the whole embedded part due to hardening during bending, but also reduces the compliance of the anchor elements 2 in reinforced concrete structures, decreases the likelihood of cracks in the latter under cyclic alternating loads, and consequently, the number of load cycles before fracture increases, those. chipping off the concrete adjacent to the anchor elements. Thus, the detail of such a construction is

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gives great strength that allows its use in seismic resistant construction

Performing a bending angle in the range of 90-180 ° C, respectively, from the end of the tail part of the anchor element 2 to the plate 1 not only maintains the anchoring reliability due to the projections 3, but also provides the possibility of contact welding of additional rods 5, as shown in Fig. 2 and Fig. 3 to the ends of the bending of the strip anchor element at any desired location. This creates favorable conditions for the formation of a welded joint, since the current concentration is achieved due to the small contact of the ends of the bend or the top of it and the rod 5 (see Fig. 2 and 3). When the bending of the strip anchor element is melted, the rod 5 is inserted into the latter and forms a welded joint, respectively consisting of two or one points. Due to the formation of an internal force peer, the strength of the joint consists of two points (see Fig. 2), which is necessary to protect the welded joint from destruction at torques acting on the embedded part arising in seismic construction areas

When bending the anchor elements 2, the area of the welded core of the stack increases

Level 4 with an additional rod 5 welded to them (see FIG. 4) located along the plane of the anchor elements. An increase in the area of the contacting surfaces occurs after resistance welding due to the seizure of metal protrusions of various shapes of the additional rod. This makes it possible to perform equal strength welds with rods of larger diameter compared to the prototype, which makes it possible to apply the proposed embedded part in seismic construction areas and, therefore, expands

its scope.

Compared with the prototype, the proposed solution allows to increase the strength and expand the field of application of the embedded part.

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Claims (1)

Invention Formula Mortgage item on auth. No. 1513097, characterized in that, with the aim increasing the strength, the strip anchor elements are made curved perpendicular to the longitudinal axis, and the bending angle varies from 90-180 ° C, respectively, from the end of the tail parts of the anchor element to the plate. FIG. Xlj FIG. 2 FIG. H Fig.Z