Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
  • E04B1/003—Balconies; Decks
  • E04B1/0038—Anchoring devices specially adapted therefor with means for preventing cold bridging

Definitions

• the invention relates to a device for connecting reinforced concrete slabs to a wall or ceiling construction made of reinforced concrete, with an insulating body for thermal insulation and a reinforcement member having tensile and pressure reinforcing elements.
• Insulating baskets have in common that the bending capacity decreases with increasing thermal resistance
• the lateral force is realized differently in the products.
• the lateral force is absorbed by stirrups.
• Insulating baskets of the Applicant have a frame construction which transfers both moments and transverse forces.
• Another solution consists in the arrangement of thrust plates, which are also decoupled from the torque transmission used to absorb the lateral force.
• the transverse force transmission through brackets or shear plates has a positive effect on the deformation behavior, since negligible shear distortions occur due to the higher shear stiffness in the transition region.
• an additional deformation from the transverse force component is always to be considered. Systems that decouple moments and shear forces are generally preferred in terms of adapting to the stresses.
• a disadvantage of the known devices is generally the lack of decoupling of the moment and shear force - carrying capacity and the complex production.
• the invention aims to decisively improve the thermal insulation in the transition area of the insulating baskets and to increase the flexibility of the connection device such that, similar to a modular system, a multiplicity of geometrical boundary conditions can be realized with one and the same product with simple assembly steps can.
• the product should be optimized to such an extent that the economy of the product can be increased by simple grading options to adapt to the respective load-bearing capacity requirements.
• a connection device of the type specified in the introduction is characterized in that the reinforcement part has closed loops made of fiber-reinforced plastic as tension having reinforcing elements and bending pressure-thrust elements with variable profiles of ultra-high-strength concrete (UHPFRC), wherein the horizontally arranged loops are mounted in the insulating body between the to be connected reinforced concrete slab and the wall or ceiling construction and the bending pressure thrust elements are integrated into the insulating body.
• UHPFRC ultra-high-strength concrete
• the closed loops of the tensile reinforcement element made of carbon fiber reinforced plastic (CFRP) or glass fiber reinforced plastic (GRP).
• the bending pressure thrust elements consist of UHPFRC quality concrete.
• Fig. 1 is a schematic side view of a device according to the invention
• Fig. 2 is a principle front view of the device
• Fig. 3 is a plan view of the device
• Fig. 4 is another embodiment in plan view
• Fig. 5 is a principle perspective view
• Fig. 6 shows a section
• Fig. 7 is a plan view of a development of the device according to the invention.
• connection device for reinforced concrete slabs 1 shown in the drawings on a wall or ceiling construction 2 has an insulating body 3 for thermal insulation and a reinforcement part 4.
• the reinforcement part 4 consists in the tension zone of closed loops 4 'of, for example, fiber plastic for connection to the plate reinforcement and in the bending pressure push zone made of differently profiled elements 4 "of ultra-high-performance concrete (UHPFRC - Ultra High Performance Fiber Reinforced Concrete).
• UHPFRC - Ultra High Performance Fiber Reinforced Concrete ultra-high-performance concrete
• the invention Compared to stainless steel reinforcing bars, the invention enables lower cross-sectional areas and significantly reduced heat loss as well as a high adaptability to the load capacity due to different loop geometries.
• an endless loop for example made of CFK or GFK
• the production of the loop can in particular be carried out with longitudinally oriented fibers in the loop direction, which are wrapped by a 90 ° twisted fiber layer, whereby sufficiently high transverse compressive strength is achieved.
• the formation of the loop allows power transmission despite the poor bond between the concrete and the loop.
• the most important influencing parameters are the loop height and the loop radius. With these two sizes, the deflection stresses on the surrounding concrete and thus also the transverse compressive stress on the loop are controlled.
• the UHPFRC pressure elements located at the extreme pressure edge provide a large internal lever arm, minimizing the forces on the load bearing elements.
• FIGS. 3 and 4 show differently designed connection devices according to the invention.
• the thermal insulation performance can be significantly increased by the use of high performance materials UHPFRC and CFK / GFK.
• the formation of a released pressure belt from tapering UHPFRC elements allows the required concrete volume and at the same time the heat loss surfaces to be kept to a minimum.
• these UHPFRC elements can be widened at the ends and preferably also profiled or provided with an upright triangular rib 4 "', in particular FIGS. 5 to 7 Through this "dog bone" shape, the heat conduction is kept low.
• the construction according to the invention enables an economic gradation of the load capacity. For example, with a flexural strength in the range of, for example, 50 kNm / m, twice the equivalent thermal resistance (insulation thickness, e.g., 8 cm) over existing products is expected. These excellent properties result mainly from the use of materials with very high strengths, whereby small cross-sections are required and thus the heat-insulating body is only slightly weakened.
• the invention is intended to enable use in passive houses. Requirement for the passive house standard is an annual Licher heating demand of 15 kWh per m2 and year, which means a substantial energy savings compared to low-energy house.
• the use of the high-tensile CFRP / GRP material in the tensile area and of UHPFRC in the pressure area as well as the corresponding savings in steel result in a significant improvement in the environmental sustainability of the product since the energy requirement for the production of 1 m 3 UHPFRC is only 5%. the energy requirement for producing the same amount of steel with the same compressive strength.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Building Environments (AREA)
• Reinforcement Elements For Buildings (AREA)
• Working Measures On Existing Buildindgs (AREA)
• Finishing Walls (AREA)
• Joining Of Building Structures In Genera (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

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ID=45348956

Family Applications (1)

Country Status (6)

Cited By (7)

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Citations (7)

Family Cites Families (2)

• 2010
  • 2010-11-30 AT AT19902010A patent/AT510798B1/de active
• 2011
  • 2011-11-30 ES ES11796605.1T patent/ES2549191T3/es active Active
  • 2011-11-30 WO PCT/AT2011/000481 patent/WO2012071596A1/de active Application Filing
  • 2011-11-30 UA UAA201308169A patent/UA107143C2/uk unknown
  • 2011-11-30 EP EP11796605.1A patent/EP2646627B1/de active Active
  • 2011-11-30 RU RU2013129761/03A patent/RU2552281C2/ru not_active IP Right Cessation

Patent Citations (7)

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