Thermokorb Balcony Connector System

Transcription

1 Thermokorb Balcony Connector System

2 Contents Thermal AVI Thermokorb Insulated Balcony Connection System 15-3 Type TKM 15-6 Type TKA 15-7 Type TKF 15-8 Thermokorb Special Solutions 15-9 Designation System For AVI Insulated Balcony Connectors Design of Compression Strut Standard Type Rib Type Design Of AVI Insulated Balcony Connectors THERMOKORB BALCONY CONNECTOR SYSTEM

3 Thermal AVI Thermokorb Insulated Balcony Connection System Ten key benefits - Why to use AVI Balcony Connectors? 1. Reduces heat loss and helps to reduce heating costs and CO2 emissions. 2. Avoids condensation, damp walls, mould formation and structural damage. 3. Reduces sound transmission to the inside of the building. 4. If using the fire protected connector, all four sides are protected, thus complete fire protection provided. 5. Good aesthetic appearance to blend with attached slab. 6. UK assembly option available for quick delivery. 7. High quality due to Group owned steel mill. 8. Simple marking system for easy use on site or in precast factory. 9. Robust units are good for site handling. 10. Installation of units is easy

4 Thermal AVI Thermokorb Insulated Balcony Connection System Prevention of thermal bridges is better than cure NIRO Thermokorbs are heat insulating, load-bearing connection elements between structural components made of reinforced concrete. They are used to improve heat insulation of reinforced concrete balconies from their connection into the inside of buildings. Further useful areas of application are: parapet walls and corbels. Introduction The AVI insulated balcony connector consists of a structural framework of independent ribs and an 80 mm thick expanded polystyrene panel (EPS-W according to standard OENORM B 13163). The individual ribs penetrate the EPS panel and, in order to avoid corrosion, they consist of U-shaped stainless steel profiles with stirrups made of ribbed reinforcing steel welded to their ends which transfer the forces from the individual ribs to the subsequent reinforced concrete elements. The system is designed to resist both positive and negative bending moments and shear forces. They consist of a uniform U-shaped stainless steel profile (material no C 850 according to EN ). The distance is ensured by 2 ribbed reinforcing steel stirrups of 10 mm diameter each (B 550A according to OENORM B4707) welded to the flanges of upper and lower strut. The individual ribs are produced by means of welding robots with heights of 110 mm, 1 mm, 150 mm and 170 mm. Special elements with rib heights of 190 mm are possible. These sizes can cover slab thicknesses ranging from 160 mm to 250 mm. Cross sectional height of a single rib element Slab thickness (cm) Rib height RH (cm) Description On account of their multi-axial strength, the AVI insulated balcony connectors are suitable for numerous applications. For the use in slab-type structures with predominately moment and/or shear force loading (Mx, Vy), standard elements of types TKM and TKA with a uniform length of 1.00 m and varying number of ribs (2 to 9 ribs) are provided. For narrow spaces it is also possible to produce elements with 1 to 9 ribs and a uniform spacing of 100 mm, hence the length of element depends on the number of ribs. By connecting two 5-ribs elements with a length of 500 mm each, it is also possible to use 10 ribs per metre. The forces are transferred from the stainless steel profiles to the reinforced concrete through welded ribbed reinforcing steel stirrups of steel grade B550A. The 10 mm bar diameter that is always used corresponds to the load bearing capacity of the stainless steel profiles and at the same time, it determines the connection reinforcement to be provided on construction site. Low deformation and good vibration behaviour is achieved by AVI insulated balcony connectors because the individual ribs have a high moment of inertia. The additional precambers for cantilever slabs can therefore be very small. The load bearing capacity of the ribs depends on the rib height RH. The rib height and slab thickness can be matched according to demand and application. The difference of slab thickness and rib height should not be less than 5 cm in order to ensure sufficient concrete cover. For special fire protection requirements R90 (90 minutes), fire protection panels are glued on the thermal insulating elements. An R120 is possible on demand. In cantilever and terrace balconies slabs, an expansion joint must be provided at least every 7m. THERMOKORB BALCONY CONNECTOR SYSTEM

5 Thermal AVI Thermokorb Insulated Balcony Connection System Recommended additional camber (% of the cantilever length) Slab thickness Rib height RH Camber cm cm % % % % % Summary of types and applications TKM AVI insulated balcony connectors for balconies, continuous slabs etc.; special types for different levels, i.e. upstands and dowstands, and wall connections; when placed vertically: for walls and deep beams TKA AVI insulated balcony connectors for recessed balconies, parapet walls and special solutions (e.g. floor slabs with different levels) TKF Split AVI insulated balcony connectors for prefabricated concrete elements (constructed with latice reinforcement) AT/2 AVI insulated balcony connectors for parapet walls Thermography of a balcony slab Without thermal insulation high heat loss at the insideto-outside transition area. Significant heat loss from the living area. Good heat distribution pattern and considerable reduction of heat loss with AVI insulated balcony connectors. Greatly reduced risk of mould formation

6 Type TKM TYPE TKM Description DESCRIPTION Type TKM is used for cantilevered balconies and mainly for the transfer of bending moments and Type shear TKM forces. is used Where for cantilevered the load balconies to be resisted and mainly may be for both the transfer positive of bending and negative, moments the and connector shear forces. type Where the load to TKM/G be resisted necessary. may be both positive and negative, the connector type TKM/G is necessary. Typical arrangement with thermal Typical insulation arrangement inside with the wall thermal insulation inside the wall OUTSIDE INOX EPS WALL INSIDE Typical arrangement with Typical arrangement with thermal thermal insulation insulation outside outside the wall the wall OUTSIDE INOX EPS Maximum admissible bending moments m x max (and corresponding shear forces v y ) for types TKA and TKM according to eurocode Slab thickness height Rib height Applied forces Number of ribs cm cm Madm,max (knm) Service MVadm adm,max (kn) (knm) Service MRd,max V adm (kn) (knm) Design M Rd,max (knm) VRd (kn) Design 81.5 V Rd (kn) Madm,max (knm) Service M adm,max (knm) Service Vadm V (kn) adm (kn) MRd,max (knm) Design Design V Rd (kn) VRd (kn) M (knm) Madm,max (knm) Service 73.2 Service V adm (kn) Vadm (kn) M Rd,max (knm) Design MRd,max V Rd (kn) (knm) Design MVRd adm,max (kn) (knm) Service V (kn) Madm,max (knm) Service M Rd,max (knm) Vadm (kn) Design 76.1 V Rd (kn) MRd,max (knm) Design Please note that for type VRd TKA (kn) the rib heights 10.7 of mm, mm and mm 53.3 are available 63.9 only 74.6in Variants 85.2 V and V2 ( mm and/or 220 mm stirrup overhang). The design of the shear resistance in the adjoining reinforced concrete slab must be checked to Please EC2 by note a structural that for engineer. type TKA the rib heights of 1 mm, 150 mm and 170 mm are available only in Variants V1 and V2 (170 mm and/or 220 mm stirrup overhang). The design of the shear resistance in the adjoining reinforced concrete slab must be checked to EC2 by a structural engineer. WALL INSIDE MAXIMUM ADMISSIBLE BENDING MOMENTS M X MAX (AND CORRESPONDING SHEAR FORCES V Y ) FOR TYPES TKA AND TKM ACCORDING TO EUROCODE Slab thickness Rib Applied forces Number of ribs cm cm THERMOKORB BALCONY CONNECTOR SYSTEM

7 TYPE TKA Type TKA DESCRIPTION Description Type Type TKA TKA is is used in in the transfer of shear forces, bending moments and axial and forces. axial forces. It is used It is for used brackets, for corbel parapet parapet walls, various walls, various connections of prefabricated elements and different levels. The admissible bending moments and shear forces - can mined be determined the same in in way the as same type TKM. way as type TKM. Typical arrangement of Typical an attached arrangement parapet of wall an attached parapet wall CONNECTION REINFORCEMENT TO BE PROVIDED CONNECTION CONSTRUCTION REINFORCEMENT TO SITE BE PROVIDED ON CONSTRUCTION SITE OUTSIDE OUTSIDE ø 10 ø mm 10 mm ø mm mm (RH=110 mm (RH=110 mm INOX INOX EPS EPS WALL Typical arrangement of Typical a recessed arrangement balcony of connection a recessed balcony connection RECESSED BALCONY * EPS INOX WALL 110 * Options: Standard: 120 mm Variant V1: 170 mm Variant V2: 220 mm * Options: Standard: 120 mm Variant V1: 170 mm Variant V2: 220 mm Maximum admissible shear forces v y max (and corresponding bending moments m x ) for types TKA and TKM according to eurocode MAXIMUM ADMISSIBLE SHEAR FORCES V Y MAX (AND CORRESPONDING BENDING MOMENTS M X ) FOR TYPES TKA AND TKM ACCORDING TO EUROCODE Slab thickness Slab thickness Rib height Applied forces Number of ribs Rib height Applied forces Number of ribs cm cm cm 11 cm Vadm,max (kn) Service Madm V (knm) adm,max (kn) Service VRd,max M adm (knm) (kn) Design MRd V Rd,max (knm)(kn) Design M Rd (knm) Vadm,max (kn) Service V adm,max (kn) Madm (knm) Service M adm (knm) VRd,max V (kn) Rd,max (kn) Design Design MRd M(kNm) Rd (knm) Vadm,max V (kn) Service Service M adm (knm) Madm (knm) V Rd,max (kn) VRd,max (kn) Design Design M Rd (knm) MRd V (knm) adm,max (kn) Service Vadm,max M adm (knm) (kn) Service Madm V Rd,max (knm) (kn) Design M (knm) VRd,max (kn) Design MRd (knm) Please note that for type TKA the rib heights of 1 mm, 150 mm and 170 mm are available only in Variants V1 and V2 (170 mm and/or 220 mm stirrup overhang). The design of the shear resistance in the adjoining reinforced concrete slab must be checked Please note that for type TKA the rib heights of 1 mm, 150 mm and 170 mm are available only in Variants V1 and to EC2 by a structural engineer. V2 (170 mm and/or 220 mm stirrup overhang). The design of the shear resistance in the adjoining reinforced concrete slab must be checked to EC2 by a structural engineer

8 TYPE TKF DESCRIPTION Type TKF Type TKF is used for cantilevered balconies, especially for the requirements of the prefabricated concrete elements industry (with lattice reinforcement pref. element slab). One part (compression strut) is installed in the slab with lattice reinforcement Description in the precast concrete factory; the second part (tension strut) is placed on site. Type TKF is used for cantilevered balconies, especially for the requirements of the prefabricated concrete elements industry (with lattice reinforcement - pref. element slab). One part (compression strut) is installed in the slab with lattice reinforcement in 260the precast concrete factory; the second 80 part (tension strut) is placed on site. EPS OUTSIDE INSIDE lattice girder 25 reinforcement in half slab OUTSIDE lattice girder INOX EPS WALL INSIDE lattice girder min. slab thickness 180 mm MAXIMUM ADMISSIBLE reinforcement in BENDING half slab MOMENTS INOX M X MAX WALL (AND CORRESPONDING SHEAR FORCES V Y ) min. slab thickness 180 mm lattice girder Slab Rib Applied Number of ribs thickness height forces Maximum admissible bending moments m x max (and corresponding shear forces v y ) cm cm Slab thickness TYPE AT/2 Type AT/2 DESCRIPTION Description Type Type AT/2 AT/2 is used is used between between parapet parapet wall wall and floor and floor slabs slabs for the transfer for the of axial transfer forces, of axial shear forces, forces shear and forces bending and moments. bending The moments. distance between The distance elements between is chosen elements according is chosen to the prevailing according structural to the prevailing conditions. structural The thermal conditions. insulation between The insulated thermal insulation balcony connectors between insulated must be provided balcony on site. connectors must be provided on site. Example Example of admissible of admissible load combination load combination M adm,max (knm) Service V adm (kn) M Rd,max (knm) Design V Rd (kn) Vadm (kn) M adm,max (knm) MRd,max (knm) Service Design V adm (kn) VRd (kn) M Rd,max (knm) Design V Rd (kn) Vadm (kn) MMRd,max adm,max (knm) (knm) Service Design V adm (kn) VRd (kn) M Rd,max (knm) Design V Rd (kn) Rib height Applied forces Number of ribs cm cm Madm,max (knm) Service Madm,max (knm) Service Madm,max (knm) Service Vadm (kn) MRd,max (knm) Design VRd (kn) Applied forces Service Design Applied forces Service Design ± ± MMx x (knm) ± Vy (kn) y Fz (kn) F z (kn) ±Vy ±Mx 120 Fz WALL stirrups to be provided on site TYPE AT/2 TY insulation on site axis distance THERMOKORB BALCONY CONNECTOR SYSTEM

9 THERMOKORB SPECIAL SOLUTIONS THERMOKORB SPECIAL SOLUTIONS BALCONIES WITH UPSTAND/DOWNSTAND CONDITIONS Thermokorb 1st 1st option: Type TKA V1 V1 or or V2 V2 Special Solutions BALCONIES WITH UPSTAND/DOWNSTAND FURTHER CANTILEVER CONDITIONS REINFORCEMENT Balconies with upstand/downstand conditions To To be be used preferably for for up up to to max. 55 ribs 1st per per option: 11 m of of element Type TKA length V1 or V2 TO TO BE BE PROVIDED ON ON SITE SITE TO TO BE BE PROVIDED ON ON CONSTRUCTION SITE SITE To be used preferably for up to max. 1st option: 5 ribs per Type 1 m of TKA element V1 or length V2 To be used preferably for up to max. 5 ribs per 1 m of element length FURTHER CANTILEVER REINFORCEMENT CANTILEVER BALCONY TO BE PROVIDED ON SITE MOUNTING BAR BAR CANTILEVER BALCONY MOUNTING BAR mm mmtka/v1 OR OR mm mmtka/v2 TO BE PROVIDED ON CONSTRUCTION SITE SLAB SLAB INSIDE CROSS BARS BARS TO TO BE BE PROVIDED ON ON SITE, SITE, MIN. MIN. Ø 10 Ø 10 mm mm SLAB INSIDE TO TO BE BE PROVIDED ON ON CONSTRUCTION SITE SITE CROSS BARS TO BE PROVIDED ON SITE, MIN. Ø 10 mm TO BE PROVIDED ON CONSTRUCTION SITE 2nd option: Type TK-Special solution To To be be used for for 66 and more 2nd option: Type TK-Special solution ribs per per 11 m of of element length To be used for 6 and more 2nd option: ribs per 1 Type m of element TK-Special length solution To be used for 6 and more ribs per 1 m of element length 170 mm TKA/V1 OR 220 mm TKA/V2 FURTHER CANTILEVER REINFORCEMENT TO TO BE BE PROVIDED ON ON SITE SITE FURTHER CANTILEVER REINFORCEMENT CANTILEVER BALCONY TO BE PROVIDED ON SITE b1 b1 MOUNTING BAR BAR CANTILEVER BALCONY MOUNTING BAR SPECIAL TYPE TYPE BS8 BS8 ( b( 1 x b 1 hx 1) h 1) b1 100 mm 100 mm h 1 h 1 SLAB SLAB INSIDE CROSS BARS BARS TO TO BE BE PROVIDED ON ON SITE, SITE, MIN. MIN. Ø 10 Ø 10 mm mm SLAB INSIDE TO TO BE BE PROVIDED ON ON CONSTRUCTION SITE SITE CROSS BARS TO BE PROVIDED ON SITE, MIN. Ø 10 mm SPECIAL TYPE BS8 ( b 1 x h 1) 100 mm h 1 TO BE PROVIDED ON CONSTRUCTION SITE CANTILEVER CONNECTIONS TO WALLS Cantilever connections to walls 1st 1st option: Type TKA V1 V1 or or V2 V2 1st option: Type TKA V1 or V2 CANTILEVER CONNECTIONS TO WALLS 1st option: Type TKA V1 or V2 FURTHER CANTILEVER REINFORCEMENT CROSS BARS BARS TO TO BE BE PROVIDED ON ON SITE, SITE, TO TO BE BE PROVIDED ON ON SITE SITE MIN. MIN. Ø 10 Ø 10 mm mm 2nd option: Type TK- TK- Special solution 2nd option: Type TK- Special solution 2nd option: Type TK- Special solution FURTHER CANTILEVER REINFORCEMENT TO TO BE BE PROVIDED ON ON SITE SITE CROSS BARS BARS TO TO BE BE PROVIDED ON ON SITE, SITE, MIN. MIN. Ø 10 Ø 10 mm mm FURTHER CANTILEVER REINFORCEMENT TO BE PROVIDED ON SITE CANTILEVER BALCONY CROSS BARS TO BE PROVIDED ON SITE, MIN. Ø 10 mm FURTHER CANTILEVER REINFORCEMENT TO BE PROVIDED ON SITE CANTILEVER BALCONY CROSS BARS TO BE PROVIDED ON SITE, MIN. Ø 10 mm MOUNTING CANTILEVER BAR BAR BALCONY b1 MOUNTING CANTILEVER BAR BAR BALCONY b1 MOUNTING BAR MOUNTING BAR b1 h1 h mm mmtka/v1 OR OR mm mmtka/v2 SPECIAL TYPE TYPE BS5 BS5 ( b1 ( x b1 h1 x x h1 h2) x h2) h 2 h1 h 2 OR 170 mm TKA/V1 220 mm TKA/V2 TO TO BE BE PROVIDED ON ON CONSTRUCTION SITE SITE SPECIAL TYPE BS5 ( b1 x h1 x h2) h 2 TO BE PROVIDED ON CONSTRUCTION SITE

10 Designation System For AVI Insulated Balcony Connectors Type/ Rn(G or E) RH/D (Remark) Type Design of ribs Number of ribs empty = element n length 1 m R = element length depending on number of ribs Examples: TKM/ R6E 15/20 R90 TKM/ 7G 15/22 R90 insulation centered TKA/ 4G 11/18 TKA/ 5G 13/18 V1 TKF/ 9E 13/18 AT/2 11/16 Design of Compression Strut The bottom leg of the stirrup is available in two variants: G straight (also for applied forces with +/- values) E bent up (e.g. for lattice reinforcement slabs) Design of compression strut G = straight or E = bent up Rib height Slab thickness Remark RH (cm) D (cm) empty = no fire protection R90 = with fire protection R120 = with fire protection TKM /R max. 9 G/E 11 / 13 / 15 / / 18 / 20 / 22 /R90 TKA /R max. 9 G/E 11 (standard) and/or V1 or V2 11/13/15/17 16 / 18 / 20 / 22 /R90 Special type V1 or V2 TKF /R max. 9 E 13 / 15 / / 20 / 22 /R90 split element AT/2 parapet wall element /R G /R90 TKM/G 600 mm 600 mm THERMOKORB BALCONY CONNECTOR SYSTEM 600 mm 600 mm TKM/E 120 mm 600 mm 170mm 600 mm 220 mm 600 mm TKA/G STANDARD V1 V2 120 mm 600 mm 170mm 600 mm 220 mm 600 mm TKA/E STANDARD V1 V2 Special stirrup shapes different from types TKM and TKA are possible. Parapet wall elements AT/2 are available with straight compression struts only

11 Standard Type Description Number of ribs per 1 m of element length (element length without fire protection) TKM/2 TKA/ TKM/3 TKA/ TKM/4 TKA/ TKM/5 TKA/ TKM/6 TKA/ TKM/7 TKA/ TKM/8 TKA/ TKM/9 TKA/9 Height of element 1000 mm

12 Rib Type Description Element length depending on number of ribs (minimum length without fire protection) TKM/R1 TKA/R1 TKM/R2 TKA/R2 100 mm 200 mm TKM/R3 TKA/R3 AT/2 0 mm 0 mm TKM/R4 TKA/R4 TKM/R5 TKA/R5 TKM/R6 TKA/R6 400 mm mm 500 mm TKM/R5 or 2 TKA/R5 provide 10 ribs per metre THERMOKORB BALCONY CONNECTOR SYSTEM 600 mm TKM/R7 TKA/R7 700 mm TKM/R8 TKA/R8 Height of element 800 mm Length of element

13 Design Of AVI Insulated Balcony Connectors The design program TK-BEM calculates and specifies the type of AVI insulated balcony connectors for the. The program is available as an Excel spreadsheet (version 2003 or higher) This program calculates the different types of the AVI insulated balcony connectors in all common applications and can take into account moments and forces along all three axes. Download under The AVI insulated balcony connectors are designed on 3 different calculation sheets. These sheets are launched and controlled via a menu file. It is not possible to start the spreadsheets individually. In the menu, the user name can be entered. Furthermore the user has options for how to start a new file and how to close the program. In the start menu, the following spreadsheets can be selected: Balcony connections with types AVI-TKM, AVI-TKF and AVI-TKA V1 and AVI-TKA V2 Parapet wall connections with type AVI-AT/2 or with a transverse single rib (TKA R1) Corbel connections with types AVI-TKM and AVI-TKA

14 THERMOKORB BALCONY CONNECTOR SYSTEM