Method for connecting thin-walled elements of open section
SUBSTANCE: connection method involves overlapping of ends of thin-walled elements with walls on a sheet gusset plate, installation of the central bolt in the pre-drilled holes in the walls of the thin-walled elements and the gusset plate, setting of the required connection angle, final tightening of the central bolt and installation of self-drilling bolts. Before installing the centre bolt between the walls of the thin-walled elements, a nut and a head of the central bolt, convex sheet parts are installed, and final tightening of the central bolt is stopped when the edges of the sheet parts are thrust against the shelves of the connected thin-walled elements.
EFFECT: increase of the assembly bearing capacity.
2 cl, 5 dwg
The invention relates to the field of construction and can be used, for example, when mounting the light arches of thin-walled elements.
A known method for joining thin-walled elements of the open section, which consists in performing two longitudinal incisions in the wall of the profile and contour of the formed wall section to contact with the main wall profile, the imposition of the end of the profile sheet fasenko and installation samouilidis bolts [Patent RU No. 2431720, IPC EV 1/38. Bulletin No. 29 dated 20.10.2011].
The known method provides a higher strength connection, however, leads to waste of material by increasing the initial length of the element and does not provide increased carrying capacity while the perception of the bending moment.
Known another method for joining thin-walled elements of the open section, including installation on the end of thin-walled element, an intermediate element in the form of staples from sheet steel, the imposition of a late item on the sheet fasenko and their attachment by setting samouilidis bolts [Patent RU No. 2436906, IPC EV 1/38, EV 1/58. Bulletin No. 35 dated 20.12.2011].
The disadvantage of this method of connection is low bearing capacity when the perception of the bending moment, which does not allow to use it, for example, during the construction of light arches of the thin-walled element of the century
Closest to the invention is a method for joining thin-walled elements of the open section, including the imposition of the ends of thin-walled profiles walls on the sheet fasenko, install the center bolt into the pre-drilled holes in the wall profile and faconti, setting the desired angle of connection, the final tightening Central bolt and install samouilidis bolts [Patent RU No. 2423581, IPC EV 1/32, EV 1/58. Bulletin No. 19 of 10.07.2011].
The disadvantage of this method of connection is low strength of the connection node when the perception of the bending moment.
The invention is directed to increasing the carrying capacity of the connection node of thin-walled elements of the open section when uploading host bending moment.
The result is achieved that the connection of thin-walled elements of the open section, including the imposition of the ends of thin-walled elements walls on the sheet fasenko, install center bolt into pre-drilled holes in the walls of thin-walled elements and faconti, setting the desired angle of connection, the final tightening Central bolt and install samouilidis bolts before you install the center bolt between the walls of thin-walled elements and the nut and the head of the Central bolt set convex Fox the new parts and the final tightening of the Central screw lead up to the stop edges of sheet items in shelves connected thin-walled elements. To simplify the nodal connections before installing convex sheet parts in them provide openings for samouilidis bolts, which are mounted alternately on the one and on the other side of the connection.
Figure 1 shows an example of using the method for joining thin-walled elements of the open section at the erection of light arches. Figure 2 shows the connection node of thin-walled elements of the open section (node a in figure 1). Figure 3 Dan cut 1-1 of figure 2. Figure 4 shows the section of the connection node in the Assembly process. Figure 5 shows a General view of the convex plate part.
Hub connection includes the ends of thin-walled elements of the open section 1 and the sheet fasenko with 2 pre-drilled in the walls of the holes, the Central bolt 3, a convex plate part 4, which can be pre-drilled hole samouilidis bolts 5.
The Assembly of the connection node is performed in the following sequence. Before you install the center bolt 3 into pre-drilled holes in the walls of the members 1 and sheet of fasolki 1 between the wall elements 1 and the nut and the bolt head 3 sets of convex plate part 4 pre-Pro is Orlandini holes for installation samouilidis bolts 5. After giving the desired angle of connection elements 1 to produce the final tightening Central bolt 3 to the stop edges of the convex sheet parts 4 shelves connected elements 1 and the installation samouilidis bolts 5.
When tightening the Central bolt 3 edges of sheet parts 4 rest on the shelves of connected thin-walled elements 1, which enables the convex sheet parts 4 in the connection bending. Thus the carrying capacity of the connection determines the total wall thickness of thin-walled elements 1 and convex sheet parts 4 running on crushing.
The method of connection of thin-walled elements of the open cross-section depending on the thickness of the applied convex sheet parts for increasing the bearing capacity of the connection, perceiving bending moment, more than twice.
1. The method of connection of thin-walled elements of the open section, including the imposition of thin-walled elements of the wall on the sheet fasenko, install center bolt into pre-drilled holes in the walls of thin-walled elements and faconti, setting the desired angle of connection, the final tightening Central bolt and install samouilidis bolts, characterized in that before you install the center bolt between the walls of thin-walled elements and nut and g is a clever Central bolt set convex plate part, and the final tightening of the Central screw lead up to the stop edges of sheet items in shelves connected thin-walled elements.
2. The method of connection of thin-walled elements of the open cross-section according to claim 1, characterized in that before installing convex sheet parts in them provide openings for samouilidis bolts, which are mounted alternately on the one and on the other side of the connection.
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.
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
SUBSTANCE: invention relates to the field of construction, namely, to units of connection of tubular rods, which are implemented when manufacturing supports of power transmission lines, cellular communication supports, etc. The unit of coupling of tubular rods includes an upper single tubular rod, to the end of which a horizontal flange is fixed, and a response flange, to which at the angle there are ends of lower tubular rods fixed. The response flange is made as separate for each lower tubular rod. Besides, at the end of each tubular rod there are two vertical flanges on each one, being tightened by bolts with similar flanges of adjacent ends of the lower tubular rods. The horizontal and response flanges along the perimeter are tightened by bolts.
EFFECT: increased stiffness of a unit.
2 cl, 4 dwg
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
SUBSTANCE: girder supporting joint on truss includes upper truss band and adjoining diagonal braces with misaligned axes. In a truss joint, a girder rests on truss band with eccentricity causing the joint to rotate in a direction opposite to rotation caused by brace misalignment. Crossing point of upper band axis with compressed diagonal brace axis is considered to be the centre of truss joint rotation, and girder support eccentricity is e=M/P where M is the joint torque in girder generated by forces in diagonal braces adjoining the band; P is a force exerted by the girder on upper truss band.
EFFECT: reduced material consumption per truss in girder coverage.
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.
SUBSTANCE: each crossbar is concreted with support cantilevers, in a groove is made in the pillar. Connecting elements of the crossbar are made in the form of a steel rope with clamp couplings pressed at its ends. Concrete extraction is continued until the working reinforcement of the pillar is exposed. The crossbar comprises support cantilevers from a steel rolled shape with protrusion outside the limits of the crossbar end. Each of rope elements is preliminarily folded in two to form a loop protruding beyond the end of the crossbar. Ends of rope elements are solidified in the body of the crossbar. Then crossbars are installed into the design position relative to the pillar. Afterwards in the pillar recess they bend the loops of ropes, which are inserted between the working reinforcement of the pillar, and then spread into the design position. Additional reinforcement rods are placed inside the loops of the ropes. Afterwards the formwork and the node of connection are installed in the volume of the recess and filled with concrete.
EFFECT: lower labour intensiveness of assembly, increased operational capabilities and reliability.
SUBSTANCE: universal building element includes a wooden rod with steel tips fixed at the ends and equipped with connecting elements. The wooden rod is made with square or round section and is equipped with central holes in ends for a connection element. The tip is made as capable of using connecting elements of various type installed on it and is formed by an end pad with a central threaded hole that adjoins the end of the wooden rod and combines diametrical opposite four add-on flat plates with holes, with the help of which the steel tip is installed and fixed on the wooden rod by means of dowels pressed in it via holes in the specified plates of the tip. Side surfaces of the ends of the wooden rod of round section that interact with the tip are made as flat in mutually perpendicular directions.
EFFECT: increased strength characteristics.
7 cl, 11 dwg
SUBSTANCE: nodal joint comprises a collapsible nodal element, made of joined four-face gussets with holes in walls, to which rod ends are fixed by bolts. The joint comprises a hollow metal core of square section arranged in the centre of the nodal joint and a combining gusset. Each of gussets is made with a shelf and vertical walls, two of which are mutually perpendicular, and the wall located between them is connected with the core wall. Between adjacent walls of the gussets there is a gap, in which there is a tip of a rod element. The core is equipped with a central bolt, rigidly fixed with the help of a pad in its base with a protruding end. The core base is arranged in the nodal element with a ledge in respect to the external face of the gusset shelf. On the protruding end of the central bolt there is a disc pad adjoining the core base and equipped with holes that match holes in the shelves of gussets in their location. Between the disc pad and the shelves of gussets there is a gap, where tips are installed and fixed.
EFFECT: higher joint reliability.
3 cl, 9 dwg
SUBSTANCE: unit of frame coupling includes a latticed crossbar and a V-shaped column. The crossbar is made with belts from channels or C-shaped profiles. Between the walls of the crossbar belt profiles there are shelves of channels or C-shaped profiles of the column coupled with walls arranged and fixed as overlapping. Units of crossbar belts crossing with column belts are connected by diagonals. Diagonals are made of two steel strips with width of at least one and a half height of the crossbar belt profile. The thickness of strips makes at least a half of the crossbar profile or column thickness. Diagonals are arranged in units of crossbar and column crossing between their belts. Diagonal links of identical directions are tightened to each other by bolts.
EFFECT: simplified manufacturing of a frame and its units of coupling of a frame crossbar with columns.
FIELD: building, particularly connections specially adapted for particular building parts or for particular building structures and units.
SUBSTANCE: method involved using embedded members made as metal cylindrical cartridges arranged in concrete body of units to be connected in joint area thereof and metal connection member. Cylindrical cartridge interior is previously filled with adhesive composition. One end of connection member is placed in metal cartridge of the first unit to be joined, another end is inserted in that of the second one. Flange is welded to metal cartridge end. Flange is bored at 40° - 50° for the depth of 0.5 - 0.7 of flange thickness and conical flange bore passes into cylindrical one having dimension corresponding to metal connection diameter, which forms fixing clawing funnel. Ratio between inner cartridge diameter and connection member diameter is equal to dc,in/dcm = 1.5 - 2.0, where dc,in is inner cartridge diameter, dcm is metal connection diameter. Wherein resting outline is formed in area of metal cartridge abutment to flange. Resting outline has ledge of not less than 5 mm when connection member diameter is 10 - 30 mm, which prevents shear deformation development, increases squeezing degree and blocks metal connection. Cartridge has length Lc = (10-12)·dcm, which prevents slip of metal connection.
EFFECT: simplified assemblage technology.
FIELD: building, particularly means for connecting building structures.
SUBSTANCE: joining device comprises several similarly sized members overlapped so that non-contacting parts are spaced apart. The members are connected with bolt. Connection parts of each member are formed as rimmed orifice having extension and depression with central aperture. Bend is made on one member side. Extension and depression may be shaped as cone, ball or truncated pyramid and formed on one or both member ends. Bolt has a cavity, outer contour of bolt head mates that of inner depression.
EFFECT: reduced labor inputs for building structure mounting and demounting.
2 cl, 4 dwg
FIELD: building, particularly for forming wooden arches, frames and trusses.
SUBSTANCE: ridge unit comprises adhesive-bonded wooden members, hinge and covering members. Unit is provided with glass-fiber plates defining curvilinear section in plane and glass-fiber semispherical heads arranged in glass-fiber plate centers. Semispherical heads are inserted in depressions made in glass-fiber centering rim. The rim edges are inserted in slots of wooden covering members. Glass fibers in curvilinear plates are oriented along plate height and width of adhesive-bonded wooden member ends. The plates does not project beyond boundaries of above ends.
EFFECT: increased strength and reduced material consumption.
FIELD: building, particularly to produce light building structures, namely in building site.
SUBSTANCE: connection includes ends of members to be connected, tightening bolts with washers. Conical depression and conical boss are formed in washer surfaces facing each other. When nut is tightened on tightening bolt the members are jammed in conical cavity between the washers.
EFFECT: increased load-bearing capacity of the connection.
3 cl, 3 dwg
FIELD: building, particularly to create rod structures of pipes.
SUBSTANCE: butt-joint comprises tubular rod ends, ribs and tightening bolts. The ribs are inserted in cuts made in tubular rods and connected one to another in crossing areas along the full length thereof. Flanges are spaced from tubular rod ends.
EFFECT: reduced flange mass.
2 cl, 4 dwg
FIELD: building, particularly to connect arch members during movable building erection.
SUBSTANCE: joint connection comprises arch member ends with fastening members fixedly connected to arch member ends, cylindrical joint insert with two side covering members connected thereto and tightening bolts. The fastening members are made as pipe cuts. The side covering members are provided with coaxial orifices arranged along a circle. Fastening members pass through the coaxial orifices.
EFFECT: simplified production and increased accuracy of joint connection assemblage.
FIELD: building, particularly to connect rod members of building structure with triangular three-layered roof deck panels.
SUBSTANCE: joint connection comprises three-dimensional hollow member to connect rods of triangular grid. The hollow member is solid and defines hexagon. The hollow member has one truncated end. The hollow member comprises support panel made as round plate with U-shaped spaced apart clips fixedly connected to plate along plate perimeter. The clips are adapted for deck panels connection. Triangular three-layered panels are overlapped and connected one to another. Mounting covering strips are connected to ends of all panels so that one strip end is flush with upper rib surface, another strip end is inserted in U-shaped clip.
EFFECT: increased load-bearing capacity of the structure.
FIELD: building, particularly means to reinforce timber structures along with member connection on head block.
SUBSTANCE: reinforcement unit comprises compressed rod, belt and reinforcing side covering plates. The plates are made of angle bars and provided with transversal diaphragms. Side covering plates enclose belt section corners and pass through slots made in compressed rod.
EFFECT: increased load-bearing capacity, prevention of head block unit deformation and shearing.
SUBSTANCE: pipe junction comprises ends of pipes that are set one in the other, face plug, slots made in the pipe of greater diameter, and connecting member secured to the pipes by welding. The connecting member is made of a ring member mounted at the end of the pipe of smaller diameter, and the slots in the pipe of greater diameter do not reach the end of the pipe.
EFFECT: enhanced strength and simplified manufacturing of the joint.
FIELD: metal truss building, particularly to erect bridge span structures.
SUBSTANCE: joint includes a number of segments and connection pipes. The joint is formed as two stamped halves connected with each other by welds to form cylindrical connection pipes provided with flanges. The flanges are welded to the connection pipe ends.
EFFECT: improved manufacturability and operational reliability.