Bar construction joint

FIELD: construction industry.

SUBSTANCE: invention refers to construction industry, and namely to joints of wooden bar constructions. Construction joint consists of wooden in cross section I-beam bars the ends of which are attached to each other angle-wise and are secured with connecting plates. Bar web is made from at least two veneer sheets arranged with a gap and attached to each other with transverse stiffeners, and their flanges are made in the form of blocks. Edges of flanges and webs of two bars contact each other and are attached to the third in cross section I-beam bar. Third bar web is made from veneer sheets, the number of which is the same as the number of veneer sheets used for construction of first bars minus one sheet. Veneer sheets of first bars are arranged with a gap equal to thickness of third bar sheets. End section of third bar which passes through the gap between veneer sheets of first bars has no appropriate flange sections. Ends of the rest sections of the third bar flanges contact the first bars flange surfaces facing them. Connecting plates made from veneer with thickness equal to that of webs are arranged in the gap between veneer sheets of first bars, in contact with longitudinal edges of third bar webs, and on outer planes of first bars.

EFFECT: improving strength and stiffness of connection.

10 cl, 3 dwg

 

The invention relates to the construction and can be used in the manufacture of wooden arches, frames and trusses.

Known node truss construction comprising upper and lower bars connected at an angle to the frontal vrobce. To increase the carrying capacity of the connections, apply the pads to be installed on both sides of the site and attached to both terminals. Pads can be made from either steel or wood. The mounting pads may be made of the clamping bolts, nails or spikes formed by the cover plate (see Atlas of wooden structures. Cgets and other M, And 1985, pp.182).

A disadvantage of this device is the large number of pins in both terminals, which reduces their carrying capacity.

Also known node truss design (Cormack LI, Walentynowicz A. Design of glued wooden structures. - Kiev: Budivelnik, 1983 - s, .42, and prototype), containing wooden rods, the ends of which are joined at an angle to each other and bonded butt pads.

One drawback of the prototype is its lack of reliability and durability, as in his design of glued wooden elements are connected by a hinge in the form of a cylindrical liner inserted in the grooves in the ends of the glued wooden elements connected with each the m through a piece of strip steel with bolt. In this regard, the use of cylindrical liner leads to the appearance in the wood splitting stresses directed across the grain, and shear stress along the fibers, which leads to splitting and chipping. Thus, a node has a low reliability and durability and a large mass of elements, which provides the connection. In addition, the bolts weaken the cross-section of connected elements, which reduces their carrying capacity.

Solved technical problem is to provide high load bearing capacity of the node core design.

The technical result obtained by the solution of the problem, expressed in enabling effective use of the structure during the formation of the frame with high strength butt site high high rigidity. In addition, ensure the most efficient use of material structure, i.e. a combination of minimizing the consumption of materials at high load bearing capacity.

To solve the task node truss structures containing wooden rods, the ends of which are joined at an angle to each other and fastened with wooden butt plates, characterized in that the cross section of the rods attached to the profile I-beam, the wall of which is made of at least two layer is plywood, placed with a gap and bonded to each other through transverse ribs associated with both plates, and their shelves are made in the form of bars, attached along the longitudinal edges of the plates, the ends of the shelves and walls of the rods in contact with each other, and these rods are fastened together with a third, preferably horizontal, the rod section which is attached to the profile I-beam, the wall of which is made of plates of plywood, which is one less than the number plates of plywood used in the construction of the first rods, in which case the shelf rods made in the form of bars, attached along the longitudinal edges of the plates, this plate plywood used in the construction of the first rods are placed with a gap equal to the thickness of the plates used in the construction of the third terminal, in addition, if the design of the beams of at least two plates of plywood last bonded to each other through transverse ribs connected with the plates, in addition, the area of the end of the third rod, passed through the gap between the plates of plywood first rods, deprived of proper shelves, and the ends of the remaining sections of the shelves of the third rod operty addressed to them in the surface of the shelves of the first terminals, in addition, the area of the junction, the entire thickness of the plot stitched coupling elements, for example, screws. In addition, in the gap between the plates of plywood first rods in contact with the longitudinal edges of the walls of the third rod placed pads made of plywood corresponding to the thickness of these walls. In addition, on the external surfaces of the plates of the first rods placed butt pads, made of plywood corresponding to the thickness of these plates, with the clamping elements distributed over the entire area of splices. In addition, butt pads, attached to V-shaped. In addition, in the gap between the plates of plywood, along their longitudinal edges posted by longitudinal ribs connected with the respective surfaces of the plates. In addition, the ends of the inner lining operty transverse ribs, and the length of splices exceeds the distance between transverse stiffeners, closest to the intersection. In addition, the end face of the end of the third rod, passed through the gap between the plates of plywood first rods made flush with the upper shelves. In addition, the Assembly is provided with additional butt plate made of a material, the stretch resistance of which is higher than that of the material of the rods is fixed on the outer side of their junction, experiencing a tensile load. In addition, the pads and the corresponding plate at the site of junction of the complement is correctly fastened with glue. In addition, the interface is equipped with a thrust, preferably vertical, for example, made of metal.

Comparative analysis of the characteristics of the claimed solution with the characteristics of the prototype and analogues demonstrates compliance of the claimed solution to the criterion "novelty".

The characteristics of the characterizing portion of the claims, solves the following functional tasks.

Symptoms "section of the rods attached to the profile I-beam, the wall of which is made of at least two plates of plywood placed with a gap and bonded to each other through transverse ribs associated with both plates, and their shelves are made in the form of bars, attached along the longitudinal edges of the plates and signs, indicating that the cross-section of third rods "given the profile of the beam, the wall of which is made of plates of plywood, which is one less than the number plates of plywood used in the construction of the first rods, in which case the shelf rods made in the form of bars fixed along the longitudinal edges of the plates provide the possibility of forming a high-strength and lightweight construction design of profiled rods, it is possible: capacity bearing capacity of the structure as by increasing the height of the wall (without fear of buckling walls at loads along the walls of the profile); ardiana moment resistance of the beam section (by increasing the size of the shelves), while ensuring the strength of the splicing rods due to their "interpenetration" of joined sections, without a significant increase of the consumption of these sites.

Signs of "the ends of the shelves and walls of the rods in contact with each other, provide the possibility of increasing the internal volume of the roof, while ensuring the reduction of specific compressive loads on the ends of the rods in the zone of their contact.

Signs indicating that coupled with the ends of the rods bonded with a third, preferably horizontal rod", provide the possibility of increasing the rigidity of the farm formed with use of the site, by creating a "horizontal tie belt at the level of the declared nodes roof.

Signs of a plate of plywood used in the construction of the first rods are placed with a gap equal to the thickness of the plates used in the construction of the third rod and signs "section of the end of the third rod, passed through the gap between the plates of plywood first rods, deprived of the relevant sections of shelves" allow interpenetration of joined sections of rods each other, provide a tight engagement of the plates and simplify the procedure of organization of such interpenetration.

While the presence of transverse ribs provides consistency of operation of the elements of the pivot - plates and bars, i.e. their function as members of the same building design and the functions, and overall increase the strength characteristics of the profile, made of rods.

Signs of "the ends of the remaining sections of the shelves of the third rod operty addressed to them in the surface of the shelves of the first rods provide a reduction in the unit compressive stress on the ends of the bars and limit the possibility of rotation of the terminals in the junction.

Symptoms "section of the junction, on the whole thickness of this section, threaded coupling elements, for example screws provide the redistribution of loads experienced by the node on a fairly extensive section of the rods.

Signs of the second claim of the invention provide the possibility of formation of monolithic (without cavities) of the structure in the joint area with bonding pads with the walls and the contraction of the construction screws.

The signs of the third claim of the invention provide for the redistribution of loads experienced by the node on a fairly extensive section of the rods.

The signs of the fourth claim optimize the redistribution of loads experienced by the node.

The signs of the fifth paragraph of the claims reveal the design of the shelf "tee".

The signs of the sixth paragraph of the formula increases the rigidity of the node.

Signs of the seventh claim provide longitudinal bracing CT the Asa roof (connecting neighboring farm) directly addressed to them on the surface of the second type terminals.

Signs eighth and ninth claims increase the carrying capacity of the node.

Signs tenth claim of the invention provide the possibility of forming additional points of support for the underlying structural elements.

Figure 1 schematically shows a longitudinal section of the site; figure 2 schematically shows a horizontal section of the second beam; figure 3 schematically represents the type of node on the side.

In the drawings shown first 1 and second 2 wooden rods. The cross section of the rods attached to the profile I-beam, the wall of which is made of plates 3 plywood and shelves made in the form of bars 4 and 5, secured along the longitudinal edges of the plates, while in the second section of the rod 2 number of plates 3 plywood per unit is greater than the number plates of plywood used in the construction of the first rod 1. If the design of the rods of at least two plates of plywood they are placed with a gap 6, equal to the thickness of the plates 3, used in the construction joined with him, rod, and plate 3 plywood connected to each other through transverse ribs 7, bonded with them. In addition, the end of the first rod 1, passed through the gap between the plates of plywood of the second terminal 2, deprived of shelves, and the ends of the remaining sections of his shelves operty in facing these surface 8 regiments of the second CTE is life 2. The end face 9 of the end of the first rod, passed through the gap between the plates 3 plywood the second rod 2 made flush with the corresponding surface 10 regiments of the second rod. In the gap 6 between the plates 3 plywood of the second terminal 2, in contact with the longitudinal edges 11 of the walls of the first rod 1 is placed liners 12, made of plywood, corresponding to the thickness of the plates 3. On the outer side of the plates of the second terminal 2 posted by joint plates 13 made of the same plywood. The plot of the joint along the entire area of the butt plates 13 and to the entire thickness of this section is stitched coupling elements 14, such as screws. The thickness of the bars 5, fixed in the gap 6 between the plates 3, corresponds to the thickness of the plywood used for the manufacture of the plates. The length of splices 13 exceeds the distance between the transverse ribs 7, closest to the junction of the rods 1 and 2. In addition, through the joint is made a through hole (not shown) with the possibility of placing and fixing the vertical thrust 15, for example made of metal.

The rods are made by gluing in the factory at the stands of known construction, which provides the desired fixation of its elements and their corresponding compression during curing of the adhesive. To produce longitudinal bars 4 and 5 and the transverse ribs 7 use others who vasino not below 2nd grade softwood (except larch) according to GOST 8486-86 with dimensions according to GOST 24454-80, with the relevant settlement characteristics SNiP P-25-80. Quantitative parameters of shape defects and machining (pokeronline, the deviation from parallelism of surfaces and edges, wane) should not exceed permissible for lumber 2nd grade. Through cracks appearing on the face are not allowed. Knots decayed, rotten and tobacco, as well as dead, located on the edges are not permitted.

Bars 4 and 5 shelves rods are glued in length with a serrated compounds according to GOST 19414-90. The limit values of the bending strength of gear connections should not be below:

- when loading edge about 33 MPa and not less than 24 MPa;

- when loading plates of the order of 37.5 MPa and not less than 27 MPa.

For the manufacture of plates 3 and, if necessary, and transverse ribs 7 and 5 bars use plywood brand PSF grade not below/BB GOST 3916.1-89 thickness of 8 and 10 mm

The transverse ribs 7 are placed on the length of the beam at a distance from each other in dangerous destruction" sections of the beam determined by the calculation for specific conditions (most appropriate) to ensure "consistency" of the work plate or set this distance on technological considerations based on the minimum number of ribs that provide "consistency" of the plates.

The adhesive connection of the program designs should be performed on synthetic adhesives, the relevant SNiP P-25-80. When this adhesive joints must meet the following requirements:

- the moisture content of the wood parts of the beams before processing protective compounds must be(12+/-3)%;

beams on the quality of adhesive joints shall meet the requirements of GOST 20850-84;

the thickness and width of the bonding layer in the zones of the beams should deviate from the rated not more than +/-1 mm;

the thickness of the adhesive layers in the elements of structures shall be not more than 0.5 mm are Allowed plots of thickness up to 1 mm, if their length does not exceed 100 mm, and the distance between them is not less than ten times the length of these interlayers;

- neprokleennye sites are not allowed.

The finished design if necessary, subjected to a protective and/or decorative treatment to protect them from moisture, biodeterioration, combustion, and chemical corrosion, as well as giving them the necessary aesthetic appearance. These works are carried out on the manufacturer. Protection as possible from one, and from these effects, which is governed by the operating conditions of the structures. While beams for buildings V degree of fire resistance must be protected from birthrate term maintenance-free service 50 years, parts VIII-class of service conditions - according to GOST 20022.2-80; wood beams for buildings IV degree of fire resistance must be sediment birthrate and fire through the deep impregnation compositions diammonium phosphate (ammonium phosphate) ammonium sulfate, borax with boric acid in the ratio of 1:1 or other protective compounds with similar properties.

The finished product is Packed and shipped to the consumer.

The formation of the node includes sawing the end of the first rod 1 at an angle that provides the specified angle of the roof and removing sections of the bars 4 and 5 with its abutting section and the preparation of the liners 12 and pads 13.

Next, assemble the node - stack bars on its side on a flat surface, the end of the first rod 1 is passed through the gap between the plates of plywood of the second terminal 2 to pirania remaining plots his shelves (bars 4 and 5) addressed to him surface 8 regiments of the second terminal 2. In the gap 6 of the rods (or gap 6, if the number of plates 3 more than two) enter the liners 12 and the outer surfaces of the plates 1 are placed pads 13 (previously on appropriate surfaces of the liners and linings and/or the surface of the wafer 3 is applied adhesive (synthetic, corresponding SNiP P-25-80). Next, within the area of the plates 13 provide compressive efforts perpendicular to its outer surface, and then "package"that includes plate 3 and the liners 12 and pads 13, "sew" the entire thickness of the coupling elements 14, such as screws, which have evenly over the entire area of the joint. Then, if it is provided by the project, che the ez site known miss rod 15 and fix it.

Appropriate operation of an Assembly to carry out industrially. After the Assembly of the truss, including the declared site, it is used for forming the frame of the roof of the building. This process differs from the conventional technology with the exception of having to use a powerful lifting equipment in connection with the low weight of the frame.

In the process of perception node structural loads its elements and overlays provide a skeleton as a whole.

In addition, varying the number of plates and stiffeners in structure design, can be varied within wide limits the carrying capacity of structures (while maintaining the same width of the plates (i.e. the height of the wall profile).

1. The node core structure containing wooden rods, the ends of which are joined at an angle to each other and fastened with wooden butt plates, characterized in that the cross section of the rods attached to the profile I-beam, the wall of which is made of at least two plates of plywood placed with a gap and bonded to each other through transverse ribs associated with both plates, and their shelves are made in the form of bars, attached along the longitudinal edges of the plates, the ends of the shelves and walls of the rods in contact with each other, and named the terminals of the IC is apleni with the third, preferably the horizontal rod, the section which gives the profile of the beam, the wall of which is made of plates of plywood, which is one less than the number plates of plywood used in the construction of the first rods, in which case the shelf rods made in the form of bars, attached along the longitudinal edges of the plates, while the plates of plywood used in the construction of the first rods placed with a gap equal to the thickness of the plates used in the construction of the third terminal, in addition, if the design of the beams of at least two plates of plywood, the last bonded to each other through transverse ribs connected with the plates, except in the area of the end of the third rod, passed through the gap between the plates of plywood first rods, deprived of proper shelves, and the ends of the remaining sections of the shelves of the third rod operty addressed to them in the surface of the shelves of the first terminals, in addition, the area of the junction, on the whole thickness of this section, threaded coupling elements, for example screws.

2. The node according to claim 1, characterized in that the gap between the plates of plywood first rods in contact with the longitudinal edges of the walls of the third rod placed pads made of plywood corresponding to the thickness of these walls.

3. The node according to claim 1, characterized in that on the of current the planes of the plates of the first rods placed, butt pads, made of plywood corresponding to the thickness of these plates, with the clamping elements distributed over the entire area of splices.

4. The node according to claim 3, characterized in that butt pads attached to V-shaped.

5. The node according to claim 1, characterized in that, in the gap between the plates of plywood, along their longitudinal edges posted by longitudinal ribs connected with the respective surfaces of the plates.

6. The node according to claim 2 and 3, characterized in that the ends of the inner lining operty transverse ribs, and the length of splices exceeds the distance between transverse stiffeners, closest to the intersection.

7. The node according to claim 1, characterized in that the end face of the end of the third rod, passed through the gap between the plates of plywood first rods made flush with their upper shelves.

8. The node according to claim 1, characterized in that the Assembly is provided with additional butt plate made of a material, the stretch resistance of which is higher than that of the material of the rods is fixed on the outer side of their junction, experiencing a tensile load.

9. The node according to claim 1, characterized in that the lining and the corresponding plate at the site of junction of the additionally sealed with glue.

10. The node according to claim 1, characterized in that the joint is equipped with a thrust, preferably vertical, for example,made of metal.



 

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Building // 2287643

FIELD: building, particularly building structure members.

SUBSTANCE: building comprises outer walls, inner walls, floor panels and roof panels including wooden panel members, namely outer and inner ones. The inner and outer wooden panel members are secured in spaced apart relation by spacing members. The wooden panel members are solid in at least one direction. The wooden panel members have predetermined dimensions and predetermined edge profiles. Cavities are defined between inner and outer panel members. Arranged in the cavities are fittings to be connected to heating or cooling systems. Cavities defined in outer wall panels, inner wall panel members, floor panels and/or roof panels communicate with each other through orifices formed in connection area between floor panel and outer wall in floor panel edge area. The orifices connect cavities in floor panel with that of outer wall. Above communication between cavities is also provided by means of orifices located in cave area between outer wall and roof in one roof panel. Above orifices connect cavities of outer wall with that of roof panels.

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EFFECT: increased reliability of beam tightness and junction with each other in corner and other connection areas without transversal member forming at beam ends.

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FIELD: construction.

SUBSTANCE: invention refers to the sphere of construction technologies and immediately deals with glued wooden structures. The suggested method of pre-tension of glued wooden packages in the across-grain direction presupposes their compression with the help of steel rods. The element of novelty consists in applying to the wooden package being forced together a pressure of 0.5 MPa with the help of steel rods gummed down inside the pre-drilled holes arranged along the whole of the package length (the spacing being equal to 300-500 mm.). The length of the rods is equal to the package width with due allowance for its eventual reduction after application of force-together pressure.

EFFECT: minimisation of material and labour expenditures related to pre-tension of glued wooden packages in the across-grain direction without distortion of their overall dimensions.

3 ex

FIELD: construction.

SUBSTANCE: individual wooden steam bath includes washing and steaming rooms, recreation room, furnace, which are installed on foundations, has heat insulating screen and partitions, doors, windows and ceilings performed with increased heat resistance. Besides, it is equipped with sewage floor drain under washing room, provided with drain tube that supplies to external drain tank, and vertical heat insulating wall arranged under partition in the zone between recreation room on the one side and washing and steaming rooms on the other side. Heat insulating screen is made as 0.2-0.3 m thick and is installed under washing and steaming rooms as wall lying on foundation. At that inside in zone of washing and steaming rooms, base part of foundation of external walls is equipped with heat insulating walls.

EFFECT: improvement of thermal shielding and preservation of temperature-moisture mode inside the device.

5 cl, 2 dwg

FIELD: construction industry.

SUBSTANCE: invention refers to construction industry, and namely to timber constructions erection methods. Construction is made from machined wooden planks which are put one onto the other along the whole construction's perimeter. Required construction height is reached step by step. In this case planks of the subsequent row overlap the joints of preceding row at interface points. Adhesive coat is applied to each row of planks. Erected construction is held under pressure until adhesive coat is cured.

EFFECT: manufacturing of solid wooden block construction under workshop conditions and providing its strength.

4 dwg

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