Mounting assembly of framework made of channel beams

FIELD: construction.

SUBSTANCE: mounting assembly of a framework made of channel beams contains the rising upper flange made of two channel beams or C-shaped profiles, oriented with their walls to each other and connected to beams, with location of the bottom flange made of two channel beams between the channel beams of the rising upper flange and connected by bolts or welding. The mounting assembly has two trapezoidal sheet gusset plates or wedge-shaped volume gusset plates in the form of a bent channel beam of variable height, attached by vertical planes to webs of the channel beams of the lower framework flange and rested against the walls or bottom webs of the channel beams of the upper flange.

EFFECT: increase of the bearing capacity of frameworks made of the channel beams by reducing the bending stresses in the framework flanges.

3 dwg

 

The invention relates to the field of construction and relates to support assemblies farms, the upper belt are made of channels with overlapping walls on shelves channels of the lower belt.

Known solution to the reference node in the farm of channels, in which the lower belt, made of two channels, and the upward support brace of the two channels are connected to the vertical fasone (see STANDARD ORGANIZATION, Melnikov them. Melnikova, a HUNDRED 0066-2011. Moscow, 2011. 13)

The disadvantage of the reference node is its high deformability of the plane of the farm.

Known farm of channels containing straight lower zone of the two channels or C-shaped sections connected by walls, the top trending belt of two channels collected on planks, with the location of the channels of the lower belt between the channels of the upper belt and the lattice farm of channels, which nolastname shelves on the wall of the upper chord bars, and the lower span of the nodes in the farm decided on the gussets to run the farm on the bolts or welding (see patent RU 2415233 C1, bull. No. 9, publ. 27.03.2011).

However, in the analog reference node is not removed.

The prototype of the invention is welded base node triangular farm, containing the upper zone of the two channels, between which is located the lower zone from one channel connected to overlap with the centering axis is terina through vertical and horizontal gussets (see series 1.860-1 "Steel structures covering industrial buildings". Issue 1. "Cover with a triangular truss span and 12,0 18,0 m". CICM. Moscow, 1971).

Because of the acuteness of the angle of the pair of rods of the upper and lower belts in the reference node of the farm belt have large Flexural stresses from the turn of the node, which leads to increased material consumption on the farm, in addition, this solution cannot be applied to farms galvanized profiles bolted connections.

The purpose of the invention is the increase in the carrying capacity of the triangular trusses of channels by reducing bending stresses in trusses and facilitate implementation of the reference node.

The result is achieved that the reference node in the farm of channels, containing upward of the upper zone of the two channels or C-shaped profile oriented walls to each other and United in a frame, with the location of the lower zone of the two channels between channels of the rising of the upper belt and United by bolts or welding, according to the invention, has two trapezoidal sheet gussets or wedge-shaped volume gussets in the form of a curved channel variable height, hinged vertical planes to the shelves of the channels in the lower tier of the farm and the ultimate in wall or the bottom shelf of the channels of the upper belt.

The invention is explained in the precincts of the AMI, where: figure 1 shows a diagram of the farm, for example, by bolts, figure 2 - a basic element of the farm with two trapezoidal flat gussets in figure 3 - supporting element is a farm with a wedge-shaped volume gussets in the form of a curved channel variable height.

The reference node is solved for the farm of the channels containing a straight lower belt 1 made of two u or C-shaped profile 2, connected by walls, and the upper belt farm 3 of the two channels 4, collected on planks, with the location of the channels 2 of the lower belt 1 between the channels 4 of the upper belt 3, which nolastname their walls on shelves belt channel 2 lower belt 1. The reference node of the farm has two trapezoidal vertical sheet gussets 5 or wedge-shaped surround the bent gussets in the form of a curved channel variable height 6 connected by welding with the centering strip 7. Fasolki 5 or 6 vertical planes 8 are attached to the shelves of channel 2 of the lower belt 1 farm and rest against the wall or the bottom shelf of the channels 4 of the upper belt 3 of the farm. The reference node with gussets 5 is designed for farms of rolled channels, with gussets 6 - for farms of bent channel or C-shaped profiles.

Support node operates as follows: the reaction from the column is passed through the centering strip 7 on fasolki 5 or 6, which is passed through the vertical plane 8 transmit this reaction on the walls of the channels 3 of the upper belt farm, and the tensile stress from the lower zone of the farm is transferred to the walls of the channels of the upper belt 3 through bolts 9. The bolts 10 are mounting and transferring of forces are not involved.

The invention allows to perform anchor node in the farm with disposable eccentricity e, which reduces the bending stresses in the upper zone of the farm 3, which has a positive impact on the carrying capacity of the farm. The magnitude of the eccentricity e depends on the efforts and moments in the trusses and is determined by calculation.

The most rational scope of the reference node are bolted farm of bent profiles span from 15 to 24 meters

The reference node in the farm of channels, containing upward of the upper zone of the two channels or C-shaped profile oriented walls to each other and United in a frame, with the location of the lower zone of the two channels between channels of the rising of the upper belt and United by bolts or welding, characterized in that it has two trapezoidal sheet gussets or wedge-shaped volume gussets in the form of bent bars, variable height, hinged vertical planes to the shelves of the channels in the lower tier of the farm and the ultimate in wall or the bottom shelf of the channels of the upper belt.



 

Same patents:

FIELD: construction.

SUBSTANCE: truss is made of straight box-shaped belts with a triangular or a diagonal web. Single-shear ends of diagonals are connected by welding with belts. First half-trusses are manufactured in accordance with the project. The upper belt is laid, which comprises a flanged mounting joint of the belt and a support unit of the half-truss. The support unit comprises two gusset plates welded to the belt to continue the plane of walls of the upper belt. A support plate of the half-truss is welded perpendicularly to the gusset plates. Then the lower belt of the truss is laid with width equal to the upper belt, which comprises a flanged mounting joint of the lower belt of the half-truss. Afterwards rods in the web of the rising direction of the half-truss are butt-welded to the belts, making them box-shaped and equal in width to belts of half-trusses. Then rods of the web of lowering direction are laid as overlapping over the units of the half-truss, making them from two parallel unequal-sided angles or strips. Strips are pre-stressed, being tightened in the middle with a bolt.

EFFECT: reduced labour intensiveness of manufacturing.

4 dwg

FIELD: construction.

SUBSTANCE: method includes manufacturing of belts, installation of rods of a triangular lattice in truss units and their connection by means of bolts or welding. Belts are made as through from two C-shaped profiles or channels. Lattice rods are made of a similar single profile. Lattice rods are installed as overlapping onto walls of belt profiles of the truss or on its gusset plates. Previously 3D sheet plates of H-shaped cross section are manufactured for units of belt fracture. Plates have contact surfaces of parallel sheets with elements of the truss equal to the height of the lattice profile cross section. For span units of the upper belt the parallel sheets of H-shaped cross section of the plate are arranged as stepped. The height of the step is equal to the thickness of the plate sheet. Then lattice rods and straight sections of the truss belts are attached to the plates. Afterwards the remaining lattice of the truss is installed between belt profiles of the truss, and planks of the truss belts are fixed.

EFFECT: simplified manufacturing.

3 dwg

FIELD: construction.

SUBSTANCE: method of manufacturing includes assembly of belts and welding of a grid to belts with subsequent disassembly of a truss along mounting joints into deliverable assemblies. Belts assembly is carried out for the whole span with belts bending. At first both belts with breakdown into deliverable assemblies are assembled as straight on bolt flange joints. Then box belts are cut in units of belts fracture along the outer shelf and two walls of the section, and belts are bent along non-cut shelves along with the truss contour. Plates with thickness equal to an open gap in the section shelf are installed into open cuts of belts. The plate is welded to cut shelf and walls of the section. Afterwards the truss grid is installed and welded to the belts. After welding of assembly joint plates, the truss is disassembled into deliverable assemblies, and inaccessible welded seams are welded additionally in deliverable assemblies.

EFFECT: simplified manufacturing and higher accuracy of deliverable assemblies jointing to each other.

6 dwg

Channel truss // 2415233

FIELD: construction.

SUBSTANCE: channel truss comprises dual-slop upper, horizontal lower belts, descending near-support braces and grid. Belts are made of two channels joined on planks. Near-support braces are made of two channels fixed by walls, and joined to walls of belt channels by overlapping shelves. Grid is made of single channels and is attached to upper and lower belts via gusset plates with self-drilling screws, bolts or through welding. Whole truss and its gusset plates are made of a single section of channel. Gusset plates are arranged in the form of two pieces of channels, which are fixed with their overlapping shelves to shelves of belt channels, and by walls - to shelves of grid channels.

EFFECT: reduced labour intensiveness of truss making.

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FIELD: construction.

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EFFECT: reduced labour cost of production, flowing contours of truss girds.

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EFFECT: possibility to relief transverse stresses in truss.

3 dwg

The invention relates to the construction and can be used in the production of large-metallorganic laminated arches

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FIELD: construction.

SUBSTANCE: nodal joint of a rod space structure includes discs tightened with a pin pulled via central holes of discs. Between the discs there are tips of belt and diagonal rods. The nodal joint is equipped with a binding ring arranged between discs, coaxially with them, with a pin pulled through it. Each tip of the belt rod is made in the form of a hook, the horn of which is directed towards one of the discs and comprises an axis arranged perpendicularly to the axis of the belt rod, and each tip of the diagonal rod is made in the form of a hook, the horn of which is directed towards the other disc and comprises an axis arranged as inclined towards the axis of the diagonal rod. Horns of all hooks are arranged in the hole of the binding ring around the pin.

EFFECT: reduced labour intensiveness and higher reliability of a nodal joint.

9 cl, 6 dwg

FIELD: construction.

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EFFECT: increased stiffness of a unit.

2 cl, 4 dwg

FIELD: construction.

SUBSTANCE: invention relates to a connection head for a system of assembly of structures with one upper end and one lower end. A middle longitudinal axis is stretching between the upper and lower end, and at least one connection flange arranged between upper and lower end with the support surface for beam adjacency. According to the invention the connection flange and the support surface have side displacement relative to the radial plane to the longitudinal axis, and the support surface is arranged in parallel to the radial plane.

EFFECT: improved design.

4 cl, 9 dwg

FIELD: construction.

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EFFECT: reduced material consumption per truss in girder coverage.

2 dwg

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FIELD: construction.

SUBSTANCE: joint comprises ends of connected elements with separate flanges along the height of the cross section and bracing bolts. A curvilinear sheet gusset is placed between separate flanges. The gusset is fixed by the ends to flanges, and along the convex surface - to the preliminarily cut cross section of the connected elements.

EFFECT: increased bearing capacity of a connection.

3 dwg

FIELD: construction.

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EFFECT: lower labour intensiveness of assembly, increased operational capabilities and reliability.

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FIELD: construction.

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EFFECT: higher joint reliability.

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FIELD: construction.

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EFFECT: simplified manufacturing of a frame and its units of coupling of a frame crossbar with columns.

2 dwg

FIELD: construction.

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EFFECT: unit strength improvement.

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FIELD: building, particularly connections specially adapted for particular building parts or for particular building structures and units.

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EFFECT: simplified assemblage technology.

2 dwg

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EFFECT: reduced labor inputs for building structure mounting and demounting.

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EFFECT: increased strength and reduced material consumption.

3 dwg

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