SU1411408A1 - Wooden beam - Google Patents

Abstract

The invention relates to construction and is intended for use as supporting structures, buildings and structures for various purposes. The purpose of the invention is to increase the carrying capacity and operational reliability of the rolls. The timber beam includes bars 1 constructed in height without clearance, interconnected by lateral edges with cross-shaped links 5, made of two identical mutually perpendicular rod elements, glued into the corresponding grooves 7 and 8, selected on the surface of the side edges of the bars 1. The bars can also be made up in height and with a gap. At the same time in the gap if necessary, can be placed gaskets. The cruciform tie rod elements can, both in the case of beam beams with a gap, and without a gap, be provided at the ends with shelves perpendicular to the rod elements. 2 hp f-ly, 8 ill. with S (L

Description

The invention relates to construction and is intended for use as a supporting structure for buildings and structures for any purpose.

The purpose of the invention is to increase the bearing capacity and operational reliability of the beam.

FIG. 1 depicts the proposed beam without a gap between rallied bars and with the arrangement of connections of the lateral side of the bar; in fig. 2 - section A-A or FIG. I; in fig. 3 shows a section BB in FIG. one; in fig. 4 is an alka with a gap between the connected BARS without the use of the gaskets of FIG. 5 is a section of the VWV in FIG. four; in fig. 6 - beam with gaskets in the gaps between the connectable bars and ikpecToo6pa3HbiMH links with shelves; and FIG. 7 - section G-Y in FIG. 6; in fig. 8 is a section d-d in FIG. 6. The wooden beam includes I-bar, height-spanned without a gap, and also with a gap of 2 without gaskets and a gap of 3 with gaskets 4. Bar-1 is interconnected along the sides) | cross bars 5 and cross-shaped links with Shelves 6. A feature of work of bars 1 frozen in wood 1 Cross links 5 and 6 is to, that when beams work under load, the descending cross-section elements of cross-shaped bridges Zey 5 and 6 operate lia stretching and pulling out of the downstream grooves 7, and the ascending ones - ita compression and indentation into the ascending Grooves 8, Equivalent stresses and descending and ascending pivotal elements of cruciform links 5 and 6 are directed along the line rallied 5rusev. They interfere with the mutual movement of the bars constituting the structure. At the same time, the cross links 5 and 6 prevent the stratification of beams and their bulging out of the plane.

With a controlled quality of installation in the grooves of cruciform bonds 5 and 6, the synthetic binder works as monolithic, with SITOM its carrying capacity, along with the strength of the wood of the bars 1, is determined by the strength of the monolithic cruciate bonds 5 and 6, as well as the strength of the adhesive composition. From this, the material of the bond is determined (for example, reinforced steel

five

0

five

chesky profile) and. material of glue composition (for example, epoxy glue with porop1kovE 1m mineral filler). For a groove sample, cutters can be used with appropriate tools to adjust the depth of the wood sample.

Improving the operational reliability of the beam is achieved by the possibility of controlling the quality of the installation of communications, the possibility of varying their quantity, placement spacing, the possibility of using the principle of fragmentation (a better number of connections have a lower bearing capacity than the correspondingly smaller ones). The increase in the bearing capacity of the beam is achieved primarily by weakening the cross sections at the places where the links are installed only in the middle zone along the height of the beam structure 5 and also by placing the links depending on the nature of the force influences both on part of the length and on the entire length of the span of the beam.

The use of cruciform bonds and their monolithing along the lateral edges of the beam, including beams with a gap, ensures the strength and rigidity of the structures, the same as the corresponding indicators of glue boards having the same geometrical characteristics,

Provide for rallying

5 bars gap (the maximum value of which, in the absence of gaskets, is equal to 1, -4 diameters of the core elements of the bonds, and in the presence of gaskets, double the height of the unified

0 bars), when compared with the indicators of the beams on the cross links of the same bars, but without a gap, gives an increase in the bearing capacity of the beam design. In addition, the clearance

5 provides effective ventilation of the bars of structures, the best conditions for their operation and increasing the reliability of the beams as a whole. In addition, increased operational reliability

The Q structures are related to the availability of quality control of the cross-link installation in the grooves prepared for them on the polymer binder.

Claims (3)

5 claims  . Wood beam, inclusive, height-adjustable bars, interconnected along lateral edges 0 due to the fact that, in order to increase the bearing capacity and operational reliability of the beam, the cross-section joints are cruciform in shape of two mutually perpendicular rod elements, and the point of intersection of the rod elements is located on the connecting line of bars, of the cruciform link core elements is located relative to to the rally line at an angle of 45. 2. Balka under item 1, characterized in that the bars are made up in height with a gap. 3.Balka on PP. 1 and 2, characterized in that the cruciform link rod elements are provided at the ends with shelves perpendicular to the rod elements. F 1P I-z )-four Fi, 2 6-5 f S Phage. five  v FIG 6 Theb.7