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GEWI®Plus Geotechnical Systems
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steel grade yield tensile nominal cross sectional weight load ultimate strength strength diameter area per metre at yield load
[N/mm2] [N/mm2] [mm] [mm2] [kg/m] [kN] [kN]
GEWI®Plus 670 800 30 707 5.55 475 565
GEWI®Plus 670 800 35 962 7.55 640 770
GEWI®Plus 670 800 43 1,466 11.51 980 1,170
GEWI®Plus 670 800 57.5 2,597 20.38 1,740 2,080
GEWI®Plus 670 800 63.5 3,167 24.86 2,120 2,540
GEWI®Plus 670 800 75 4,418 34.68 2,960 3,535
GEWI®Plus – Ground Anchors 30-75 mm
Advantages and Characteristics■ Easy system handling
■ Simple restressing and destressingthrough anchorage with nut
■ Permanent corrosion protectionpossible
■ Easy removal of temporary anchorsthrough threaded sleeves
■ Flexibility in transport lengths byusing couplers
■ High bond strength between GEWI®Plus threadbar and cement grout
■ High stiffness during installation
■ Angle compensation using wedgewashers
■ Quality assurance through internaland external supervision ofproduction
corrosion protection
steel cap
anchor platewith steel tube
injection adapter
GEWI®Plus bar
cement grout
smooth sheathing
corrugated sheathing
spacer
grout cap
domed nut
Temporary GEWI®Plus Ground Anchor
Permanent GEWI®Plus Ground Anchor
domed nut
anchor platewith steel tube
smooth sheathing
cement grout
GEWI®Plus bar
spacer
profile ring
corrugated sheathing
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GEWI®Plus – Soil Nails 18-75 mm
Advantages and CharacteristicsThe essential advantages of the GEWI®Plus soil nails are:
■ High durability through doublecorrosion protection possible
■ Low susceptibility to corrosion
■ Angle compensation up to 20° through formed plate
■ Flexibility in length by using couplers
■ Extension bars may be attached by using couplers
■ Spacers ensure proper grout cover
■ High standard of quality control from production stage to installationof the soil nails ensures consistentquality
formed plate
domed nut
GEWI®Plus bar
cement grout
domed nut
formed plate
GEWI®Plus bar
cement grout
corrugated sheathing
spacer
steel grade yield tensile nominal cross sectional weight load ultimate strength strength diameter area per metre at yield load
[N/mm2] [N/mm2] [mm] [mm2] [kg/m] [kN] [kN]
GEWI®Plus 670 800 18 250 1.96 170 200
GEWI®Plus 670 800 22 375 2.94 250 300
GEWI®Plus 670 800 25 491 3.85 330 390
GEWI®Plus 670 800 28 616 4.83 410 490
GEWI®Plus 670 800 30 707 5.55 475 565
GEWI®Plus 670 800 35 962 7.55 640 770
GEWI®Plus 670 800 43 1,466 11.51 980 1,170
GEWI®Plus 670 800 57.5 2,597 20.38 1,740 2,080
GEWI®Plus 670 800 63.5 3,167 24.86 2,120 2,540
GEWI®Plus 670 800 75 4,418 34.68 2,960 3,535
GEWI®Plus Soil Nail
GEWI®Plus Soil Naildouble corrosion protection
spacer
structural concreteor shotcrete
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Advantages and CharacteristicsThe DYWIDAG GEWI®Plus pile is adrilled micropile with a central steelelement based on the GEWI®Plusthreadbar with hot-rolled, continuousthread deformations on both sides. TheGEWI®Plus threadbar is encapsulatedin cement grout which acts both ascorrosion protection and as loadtransfer into the soil or rock.
■ Excellent load transfer into concretestructures by means of anchoringelements
■ Tensile, compressive and alternatingloads can be efficiently transferred tothe structure
■ The coarse GEWI®Plus threadguarantees maximum bond betweensteel and cement grout
■ The stress-strain curve of the GEWI®Plus bar shows high ductility
■ Settlement can be prevented byusing preloaded GEWI®Plus piles
■ Load transfer into soil optimized bypost-grouting
■ Double corrosion protected piles can be used for high corrosionimpact like in aggressive media such as seawater or contaminatedground
■ Can be cut off or coupled at any given point
■ A small drill hole diameter permitseconomic drilling equipment
■ robust coarse thread remainsthreadable even when dirty ordamaged
GEWI®Plus – Piles 28-75 mm
additional reinforcement forcompression pile
end-anchorage with lock nut
pile neck protection
spacer
coupler
GEWI®Plus bar
GEWI®Plus bar
GEWI®Plus Pile GEWI®Plus Pile double corrosion protection
anchor nut withplate and lock nut
additional reinforcement for tension pile
corrugated sheathing
spacer
cement grout
GEWI®Plus bar
steel grade yield tensile nominal cross sectional weight load ultimate strength strength diameter area per metre at yield load
[N/mm2] [N/mm2] [mm] [mm2] [kg/m] [kN] [kN]
GEWI®Plus 670 800 28 616 4.83 410 490
GEWI®Plus 670 800 30 707 5.55 475 565
GEWI®Plus 670 800 35 962 7.55 640 770
GEWI®Plus 670 800 43 1,466 11.51 980 1,170
GEWI®Plus 670 800 57.5 2,597 20.38 1,740 2,080
GEWI®Plus 670 800 63.5 3,167 24.86 2,120 2,540
GEWI®Plus 670 800 75 4,418 34.68 2,960 3,535
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GEWI®Plus – the ultimate in threadbar technology
The booming market of geotechnicalsystems needs higher performance!
DYWIDAG-SYSTEMS INTERNATIONALfaces this challenge. With the newGEWI®Plus systems we present thelatest stage of threadbar technology forground works:
■ complete systems for piles, anchors,rock bolts and soil nails
■ bar diameters from 18 to 75 mm
■ yield loads from 160 to 2,960 kN
■ ultimate loads from 200 to 3,535 kN
■ all systems in accordance with thelatest European standards andprovisional European standards
■ corrosion protection systemscomplying with the latestdevelopments and European stan-dards
■ yield strength: 670 N/mm2 – an increase of 34% compared tostandard GEWI® rebars (500 N/mm2)
■ ultimate strength: 800N/mm2 – an increase of 45% compared tostandard GEWI® rebars (550 N/mm2)
■ for the same design load you will save about 25% of steel quantity compared to standard GEWI® rebars
These factors bring big advantages during transportand in handling.
■ the robust GEWI®Plus thread is specially designedfor rough site conditions
■ the right-hand thread over the full length offers thepossibility to fix and couple the bars at any point.Adaptions to varying conditions are very easy andcan be done quickly on site
■ in spite of the high strengths, GEWI®Plus is notsensitive to stress crack corrosion and hydrogeninduced embrittlement
■ GEWI®Plus is fully integrated in the qualityassurance system of DYWIDAG-SYSTEMSINTERNATIONAL – all our workshops arecertificated to DIN EN ISO 9001
■ DYWIDAG-SYSTEMS INTERNATIONAL is theinventor of the GEWI® thread, we have all theknow-how in this business. As the producer of thesystems for more than 30 years we can help youwith our experience and show you a solution foralmost every problem that you will face on site
GEWI®Plus – a system for the future
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DYWIDAG-SYSTEMS INTERNATIONAL GMBHSiemensstrasse 885716 UnterschleissheimGermanyPhone +49-89-30 90 50-100Fax +49-89-30 90 50-120E-mail: [email protected]
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@dywidag-sistemas.comwww.dywidag-sistemas.com
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