Structural panel

FIELD: construction.

SUBSTANCE: invention relates to building construction and can find application during the construction of bearing-wall houses. Structural panel includes the reinforcing elements made of longitudinal reinforcing concrete bars, embedded in constructive heat-insulating material of panel filling and mounted at the boundaries of extreme quarters of width of the panel cross section, designed of channel section and having openings in the wall, through which transverse reinforced concrete bars of rectangular cross section pass through alternately in the level of top and bottom, the ends of which are attached to the extreme longitudinal reinforced concrete of rectangular cross section; in this case the height of holes in the walls of bars of channel section is equal to the triple thickness of transverse bars of rectangular cross section, in this case the holes in the walls of reinforcing concrete bars of channel section are made in the form of four-sided truncated pyramid, besides for each pair of reinforcing concrete bars of channel section, the smaller base of truncated quadrilateral pyramid is arranged for the first from pair from the outer side toward the pass of reinforced concrete bar of rectangular cross section, and for the second - from the inside, moreover, taper angle of the truncated pyramid is of 8÷12 degrees. Panel is equipped with bimetal strips, which are installed in the joints of longitudinal and transverse reinforced concrete bars of rectangular cross-section, in this case the material of bimetal from side of longitudinal reinforced concrete bars has the thermal-conductivity factor 2.0-2.5 times higher, than the thermal-conductivity factor of the material from side of transverse reinforced concrete bars.

EFFECT: maintenance of thermal-insulating properties of structural panel when exposed to freezing temperatures of the environment by eliminating the effects of "cold bridges" by creating the zone of high thermal resistance in joints of longitudinal and transverse reinforced-concrete bars.

4 dwg

 

The invention relates to a ground construction and may find application in the construction of prefabricated houses.

Known construction panel (see RF patent №2041327, publ. 09.08.1995), including reinforced elements of the longitudinal reinforced concrete bars, zamonolichennyj in a constructive insulating material filling panel and installed on the extreme borders of the quarters of the width of the cross section of panel executed channel section and having openings in the wall through which in turn the level of the top and bottom missing transverse reinforced concrete bars of rectangular cross-section, the ends of which are attached to the extreme longitudinal reinforced concrete bars of rectangular cross-section, the height of the hole in the wall bars channel section equal to triple the thickness of the bars of rectangular cross-section.

The disadvantage of this solution is the complexity of mounting and dismantling, due to the difficulty of crossing the width of the panel transverse bars on two levels with the presence of monolithic interconnect aggregates due to the buildup cell concrete or keramzitobetona on the inner surface of the holes in the walls of reinforced concrete bars.

Known construction panel (see RF patent №2435913, publ. 10.12.2011 bull. No. 34), including arm is the dominant elements of the longitudinal reinforced concrete bars, zamonolichennyj in a constructive insulating material filling panel and installed on the extreme borders of the quarters of the width of the cross section of panel executed channel section and having openings in the wall through which in turn the level of the top and bottom missing transverse reinforced concrete bars of rectangular cross-section, the ends of which are attached to the extreme longitudinal reinforced concrete bars of rectangular cross-section, the height of the hole in the wall bars channel section equal to triple the thickness of the transverse bars of rectangular cross-section, with holes in the walls of reinforced concrete bars of channel section made in the form of four-sided truncated pyramid, and for each pair of reinforced concrete bars of channel section less the base four-sided truncated pyramid is for the first of the pair on the outer side in the direction of transmission of concrete block rectangular cross-section, and the second on the inside, additionally, the taper of the truncated pyramid is 8-12 degrees.

The disadvantage is the reduction in insulating properties when operating in freezing temperatures, when there are "bridges" on the end surfaces of operacnich reinforced concrete bars as having the smallest distance from the zone of contact with the outside air in the caulked design insulation material of construction of the panel.

The technical task of the invention is to maintain the insulation properties of the building panel when exposed to negative ambient temperatures by eliminating the impact of "cold bridges" by creating a zone of increased thermal resistance at the junctions of the longitudinal and transverse reinforced concrete bars.

The technical result is achieved by the fact that the construction panel, comprising reinforcing elements of the longitudinal reinforced concrete bars, zamonolichennyj in a constructive insulating material filling panel and installed on the extreme borders of the quarters of the width of the cross section of panel executed channel section and having openings in the wall through which in turn the level of the top and bottom missing transverse reinforced concrete bars of rectangular cross-section, the ends of which are attached to the extreme longitudinal reinforced concrete bars of rectangular cross-section, the height of the hole in the wall bars channel section equal to triple the thickness of the transverse bars of rectangular cross-section, with holes in the walls of the reinforced concrete channel section bars made in the form of four-sided truncated pyramid, and for each pair of reinforced concrete BRU the Cove channel section smaller base of four-sided truncated pyramid is for the first of the pair on the outer side in the direction of transmission of concrete block rectangular cross-section, and for the second - from the inside, additionally, the taper of the truncated pyramid is 8÷12 C, and the panel is equipped with a bimetal strips that are installed at the junctions of the longitudinal and transverse reinforced concrete bars of rectangular cross-section, with the material of the bimetal of the longitudinal reinforced concrete bars has a coefficient of thermal conductivity of 2.0-2.5 times higher than thermal conductivity of the material from the transverse reinforced concrete bars.

In Fig.1 shows a construction panel, General view; Fig 2 is an axonometric view of the hole in the form of a truncated four-sided pyramid in the reinforced concrete bar of channel section; Fig.3 connection of a pair of reinforced concrete bars of channel section and transverse concrete beam of rectangular cross-section; Fig.4 - the strip of bimetal.

Construction panel consists of a plate 1 made of structural insulating material, reinforced concrete longitudinal bars 2 channel section with normal or strenuous longitudinal rebar set on the borders of the far quarters of the width of the cross-section of the panel. In the walls of reinforced concrete longitudinal bars 2 channel section has openings 3, through which the quiet alternately in the top and bottom holes 3 skipped on the width of the panel, the cross-bars 4 of rectangular cross-section, between the ends of which are along the panel in the gap height are longitudinal reinforced concrete bars 5 of rectangular cross-section. The height of the holes 3 is equal to triple the thickness of the cross-bars 4 of rectangular cross-section.

The 3 holes in the walls of reinforced concrete longitudinal bars 2 channel section made in the form of a truncated quadrilateral pyramid 6, and its lower base 7 is like from the outside reinforced concrete longitudinal bars 2 channel section and the inner side, depending on the direction of subsequent transmission of transverse concrete 4 bars of rectangular cross section through a pair of reinforced concrete longitudinal bars 2 channel section, with the inner surface 8 of the hole 3 has an angle of inclination from the smaller base 7 to a larger base 9 of a truncated quadrilateral pyramid 6 and is 8÷12 C.

For a pair of reinforced concrete bars 2 lower channel section base 7 of a quadrilateral pyramid 6 is for the first 10 couples with the outer side 11 in the direction of transmission of transverse concrete block 4 of rectangular cross-section, and for the second 12 of the pair is from the inner side 13.

The presence of reinforced concrete PR is the longitudinal bars 2 channel section of the hole 3 allows you to skip through them transverse concrete tile 4 rectangular cross-section in two levels and securely bind reinforced concrete longitudinal tile 2 with monolithic interconnect filling. The presence of reinforced concrete longitudinal bars 2, transverse concrete 4 bars of rectangular cross-section and longitudinal concrete 5 bars of rectangular cross section allows you to associate a panel at the circuit and protect the entire valve panel from corrosion.

Longitudinal concrete blocks 5 rectangular cross-section and transverse concrete tile 4 rectangular cross-section perceive the bending moments of the normal cross section. Longitudinal concrete tile 2 channel section additionally perceive the action of bending moments on inclined sections, and provide the strength of the panel from the action of shear forces.

The location of the longitudinal reinforced concrete bars 2 channel section with normal or hard working reinforcement on the extreme borders of the quarters of the width of the cross-section of the panel allows to exclude freezing panes in place longitudinal joints and apply them as enclosing wall panels and ceilings, and thereby to expand the scope.

However, the presence of the mechanical section of the transverse concrete 4 bars of rectangular cross-section near the contact zone of insulating material panel construction and to the outside air at low temperatures leads to the formation of "cold bridges" in the joints reinforced with longitudinal bars 5 of rectangular cross-section, which throughout its length is also located in the zone of contact with the outside air. All this leads to the intensification of heat losses by conduction (see, for example, Isachenko B. N. Heat transfer. M: Energy, 1980, 439 S.). To eliminate this phenomenon is necessary in the joints transverse 4 and 5 longitudinal reinforced concrete bars of rectangular cross-section to create additional thermal resistance, which is achieved by installing a strip 14 of the bimetal.

Due to the fact that the heat conductivity is carried out mainly with the end surface of the transverse concrete 4 bars of rectangular cross section, and the heat conductivity is carried out mainly along the entire longitudinal length 5 reinforced concrete bars of rectangular cross-section, to provide more thermal resistance at the point of connection to reduce heat loss, you must use the strip of bimetal, providing an approximate equality of the temperature gradients of opposite direction, which requires at least twice the ratio of thermal conductivity of the materials constituting the bimetal.

In addition, the material 15 (e.g., aluminum with a thermal conductivity 204 W/(m·g), see, for example, nasakin centuries of Technical thermodynamics of the heat transfer. M.: Nauka, 1980. 435 S.) has a coefficient of thermal conductivity of 2.0-2.5 times higher than the material 16 of the strip 14 of the bimetal (for example, brass with a thermal conductivity of 85 W/(m·g), see ibid.). Due to the fact that mostly only the ends of the transverse concrete 4 bars of rectangular cross section protruding beyond the longitudinal surface 5 of reinforced concrete bars of rectangular cross-section, i.e. in more exposed to negative temperatures, the heat conductivity them has a more local character than the longitudinal length 5 reinforced concrete bars of rectangular cross-section. The connection of the transverse concrete block 4 of rectangular cross-section with the material strip 15 14 bimetal creates a temperature gradient (gradt1)directed from the concrete material of the bar 4 to the material strip 15 14 bimetal even at low heat flux through the rectangular cross section of concrete block 4 due to the considerable increase of thermal conductivity of the material strip 15 14 bimetal (e.g., aluminum).

Simultaneously, the exhaust heat conductivity occurring along the entire length of the longitudinal reinforced concrete bars 5 of rectangular cross-section, has over the raft of the initial heat flux (compared to the end surface transverse concrete 4 bars of rectangular cross-section) and at the junction of the longitudinal reinforced concrete bars 5 rectangular cross-section, with the material 16 of the strip 14 from the bimetal temperature gradient occurs (gradt2), also directed against material longitudinal reinforced concrete bars 5 rectangular cross-section, the material 16 of the strip 14 of the bimetal due to the significant magnitude of heat flow, exhaust the entire length of the longitudinal reinforced concrete bars 5 of rectangular cross-section, and subsequent local dispersion in the joints with gasket 14 of the bimetal (see, for example, Isachenko B. N. Heat transfer. M: Energy, 1980, 439 S.).

As a result, the gasket 14 of the bimetal there are approximately equal in magnitude and opposite direction of the temperature gradients in the materials 15 (gradt1) and 16 (gradt2), which significantly increases thermal resistance of heat conduction as from the internal cavity between the longitudinal bars 2 channel section through the transverse concrete tile 4 rectangular cross-section and the side surface of the longitudinal reinforced concrete bars 5 of rectangular cross-section. This ultimately provides for the maintenance of the normalized thermal insulation parameters of the building panel by removing the "cold bridges" when exposed to negative temperatures.

You can also use construction p is Joseph and Nelly as a ceiling on the technical basements, floors and panels-coverings. The execution of reinforced concrete bars, for example, from a constructive claydite-concrete with density of 1,600 kg/m3will allow you to use the panel as interfloor overlappings with minimal heat absorption interconnect with an aggregate of cellular concrete or keramzitobetona brands 35-40 with γ 700-00 kg/m3, laying them regular linoleum without thermal base.

The use of interconnect filling, for example, cellular concrete or keramzitobetona, as well as any other material contaminates hole 3 due to the buildup of individual solid particles on the inner surface 8, which makes it difficult as an Assembly, and especially demolition work associated with the transmission of transverse bars 4 rectangular cross-section in two levels.

The implementation of the holes 3 in the form of four-sided truncated pyramid with a smaller base 7 located on the outer side of reinforced concrete longitudinal bars 2 channel section, will allow for the installation or dismantling of a building panel as bandwidth transverse bars 4 rectangular cross-section to displace are stuck solid impurities from the inner surface 8 with significantly lower labor costs due to the angle of taper between the lower 7 and a large 9 bases than with a horizontal inner surface 8 when significant work on the move with increasing frictional resistance are stuck dirt on the inner surface 8 of the holes 3.

The originality of the invention lies in the fact that the use of strips of bimetal with a thermal conductivity of materials which are different in 2.0-2.5 times, provides practical elimination of the formation of "cold bridges" in the junctions of the longitudinal and transverse reinforced concrete bars of rectangular cross-section. This is achieved by creating additional thermal resistance approximately equal in magnitude and oppositely directed gradients of temperature.

Construction panel comprising reinforcing elements of the longitudinal reinforced concrete bars, zamonolichennyj in a constructive insulating material filling panel and installed on the extreme borders of the quarters of the width of the cross section of panel executed channel section and having openings in the wall through which in turn the level of the top and bottom missing transverse reinforced concrete bars of rectangular cross-section, the ends of which are attached to the extreme longitudinal reinforced concrete bars of rectangular cross-section, while high is and holes in the walls of the bars of channel section equal to triple the thickness of the transverse bars of rectangular cross-section, the orifices in the walls of reinforced concrete bars of channel section made in the form of four-sided truncated pyramid, and for each pair of reinforced concrete bars of channel section smaller base of four-sided truncated pyramid is for the first of the pair on the outer side in the direction of transmission of concrete block rectangular cross-section, and the second on the inside, additionally, the taper of the truncated pyramid is 8÷12 C, wherein the panel is provided with strips of bimetal, which is installed at the joints of the longitudinal and transverse reinforced concrete bars of rectangular cross-section, with the material of the bimetal of the longitudinal reinforced concrete bars has a coefficient of thermal conductivity of 2.0-2.5 times higher than thermal conductivity of the material from the transverse reinforced concrete bars.



 

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