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.
The invention relates to the field of construction, namely, the butt joints stretch and bending elements of metal structures.
Known joint connection stretched rods, including the ends of the rods, the joint flanges with edges that are drawn together by bolts [AC No. 1060773, IPC A04B 1/58. Bulletin No. 46 from 15.12.83].
A disadvantage of the known solution is that it requires a significant consumption of solid steel flanges are manufactured from special steel with a guaranteed strength in the thickness direction of the car.
Know more butt joint in bending elements, which includes all elements, flanges with edges and coupling bolts. [the book. Metal construction. Edited by SCI Medisina. 11th ed. M. Ed. Academy. 2008 str].
The lack of a butt-joint is high cost, due to the fact that the flanges made the entire height of the loft of special steel of the same thickness, although the lower part of the flange work in tension and the upper compression, which do not require special steel and thick flanges.
Closest to the invention is a butt joint, including the ends of the connected elements with separate height-section flanges, while in the tension zone of the flange has a greater thickness and is made of special the hoist, and in the compressed zone of the flange can be made of ordinary steel and thinner, with an additional strip [kN. Metal construction. The guide designer. Ed. by V.V. Kuznetsov, M. ACB, 1998, str. Resv].
A disadvantage of the known joint is the low strength of the weld flange element, as the force is transferred to a small area of the element is limited by the height of the flange.
The invention is directed to increasing the carrying capacity of the connection.
The result is achieved that in butt connection, including the ends of the connected elements with separate height-section flanges and coupling bolts, between the separated flanges posted by curvilinear sheet fasone attached the ends to the flanges, and a convex surface to the previously cut section of connected elements.
Figure 1 shows an example of a beam I-beam consisting of two forwarding elements with butt connection; figure 2 shows the node A butt joint; figure 3 Dan cut 1-1 in figure 2.
Joint connection includes the ends of the connected elements 1 with separate flanges, respectively, the upper 2 and lower 3 zones. Between the flanges 2 and 3 is placed a curved sheet fasone 4. The ends of the sheet of fasolki 4 is attached by welding to the bottom 2 and top 3 flan is am. On the convex side of the sheet fasone 4 on the welding prikreplena to pre-cut section of item 1.
The device is a butt-joint is performed in the following sequence. At the ends of the connected elements 1 at their upper and lower belts are installing and welding attach separate the flanges 2 and 3. Between the flanges 2 and 3 cut curvilinear plot elements 1 corresponding to the curvature of the sheet of fasolki 4. Fesenko 4 ends attached by welding to the flanges 2 and 3, and a convex surface to cut the cross section of the elements 1. Final Assembly joint conduct by the combination of flange members 1 and install coupling bolts 5.
In butt connection, due to the presence of a curved sheet of fasolki connecting flanges, ensures the redistribution of effort, which leads to the increase of carrying capacity of welds securing the flanges to the cross-section of connected elements. Additionally, the cut section of the elements between the curved gussets connected elements forms a cavity that allows you to skip through them utilities.
Joint connection, comprising the ends of connected elements with separate height-section flanges and coupling bolts, characterized in that between the separated flanges posted by curvilinear sheet f is of PMC, attached the ends to the flanges, and a convex surface to the previously cut section of connected elements.
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.
SUBSTANCE: unit of a metal frame carcass of a building includes a double-tee column, combined with a double-tee beam, which creates a column cantilever, which is rigidly connected in the zone of least bending torques by means of flanges on high-strength bolts with a crossbar, having the cross section corresponding to the section of the column cantilever. The column is equipped with an upper stiffening rib and paired lower stiffening ribs, symmetrically arranged at both sides of the column wall in the level of the lower shelf of its cantilever. Between the upper and lower stiffening ribs of the column in parallel to its shelves there is a vertical rib for connection of the spacer and the vertical link to it, and to the column wall above the neutral axis of its cantilever and in parallel to its shelf there is a polygonal plate attached to the shelf, and this plate protrudes beyond the edge of the upper stiffening rib, for fixation of the horizontal link. Central longitudinal axes of the spacer, horizontal and vertical links are connected in one point arranged in the frame plane.
EFFECT: unit strength improvement.
3 cl, 1 dwg
SUBSTANCE: metal frame assembly for a low-rise building comprises a double-tee pillar, having alternating cross section by height within a lower floor, with paired horizontal symmetrical stiffening ribs at both sides of its wall, which are arranged in the plane of upper and lower shelves of a double-tee beam connected to the inner shelf of the pillar to form a cantilever. The free end of the cantilever in the area of least bending torques is connected by means of high-strength bolts with a crossbar, having a cross section corresponding to the cantilever section. Between horizontal stiffening ribs of the pillar there are ribs installed for connection of spacers to them, which are displaced from a neutral axis of cross section towards the outer shelf of the pillar and are installed in parallel to it. A vertical rib is welded to the inner shelf of the pillar and to the upper belt of the cantilever as arranged in the plane of cantilever walls and the pillar. The crossbar with the pillar cantilever is connected by means of flanges welded to their ends and protruding beyond the limits of their upper shelves, at the same time the crossbar and the cantilever are equipped with supporting ribs of their upper shelves and supporting ribs of their walls.
EFFECT: reduced material intensity of a unit due to its higher stiffness.
6 cl, 1 dwg
SUBSTANCE: ridge unit of connection of a frame carcass of a building includes crossbars of double-tee cross section that are arranged at the specified angle to each other and rigidly connected to each other by means of flanges welded to ends of crossbars at high-strength bolts. The ridge unit at least at one side of crossbar walls is equipped with a pair of spacers having a closed cross section arranged above the neutral axis of crossbar section and symmetrically relative to flanges. Each spacer is equipped with a flange of a T-shaped cross section, the shelf of which is rigidly connected with the end of the spacer, and the wall is arranged in the plane of the vertical or horizontal axis of spacer section and is connected on bolts with a plate attached perpendicularly to the crossbar wall, in parallel or perpendicularly to the crossbar shelf, at the same time the distance from the plane that separates flanges to the centre of gravity of spacer section shall not exceed 1.5 d, where d - transverse size of the spacer along its central axis parallel to the crossbar shelf.
EFFECT: higher stability of a crossbar from a frame plane and reduced metal intensity of a unit.
11 cl, 3 dwg
SUBSTANCE: joint of composite tube confined concrete rods is formed by tubes, which are filled by concrete. Concrete is laid into a tube under a force higher than operational load. Concrete is limited at one end of the tube moving under action of the force with a plug with a stop. At the other end of the tube the concrete volume is fixed with the plug, some of which is placed in the pipe end. The external part of the plug is placed into the open end of the tube confined concrete rod, to which the structure is joined. With a certain volume of concrete, a guaranteed gap is provided between ends of joined tubes. The joint is covered with a coupling, the position of which is fixed with a support ring.
EFFECT: elimination of welded joints making during assembly, reduced effect of subsidence phenomena in concrete at structure operation and elimination of longitudinal shift of concrete under load.
SUBSTANCE: bent crossbar is stretched via a unit as indivisible, solid. The lower pillar cap is arranged as trough-shaped with longitudinal bent ribs. The cap follows and covers the oval surface at the bottom. The crossbar is tightly inserted into the pillar cap, matching fixing pins with responsive holes in the cap trough. The base of the upper pillar is arranged same as the cap - trough-shaped, and is equipped with fixing pins with response holes in the cap bends. The upper pillar is mounted in a non-adjusting manner, matching fixators with responsive holes, and an oval tubular cavity is formed with the cap trough. The crossbar inserted into the cavity is tightly covered. Longitudinal ribs of the upper pillar base and lower pillar cap are connected to each other, for instance, by high-strength alloyed pins. They are securely tightened with a nut setter, and a single monolithic unit of pillars and the crossbar is created.
EFFECT: automation of a process of structure carcass erection, increased manufacturability of a process, reduced labour intensiveness and higher reliability of connection.
SUBSTANCE: method to arrange joint units includes installation of lower columns, crossbars, ceiling slabs, upper columns and monolithing of column joints with crossbars and upper areas of crossbars. Lower and upper columns are columns of floor sectioning with holes in upper ends and reinforcement rods in lower ends. A conductor is fixed at the end of each column prior to assembly. The conductor forms between its body plane and the upper end of the column a space for a monolithic node joint and a hole for reinforcement rods in a finished joint. Precast crossbars are installed at the ends of columns, providing for contact of double-sided slopes of their support ends with setting columns of conductors. Monolithing of column joints with crossbars and upper areas of crossbars is carried out prior to removal of conductors from ends of lower columns. Conductors are removed from columns after formation of an initial structure of concrete in a ceiling. Upper columns are installed after concrete gains design strength, connecting them with the lower ones by means of a plug joint.
EFFECT: reduced metal intensity, higher accuracy of performance, liquidation of welding and forming works on a construction site.
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.