Diseño de taludes

8/9/2019 Diseño de taludes

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TECCO® / SPIDER® systems

stabilize slopes using

high-tensile wire.

• high-tensile wire mesh

(tensile strength of at

least 1770 N/mm2)

• system can be optimizeddepending on the subsoil

with several mesh types

• cost-effective thanks to

wide nail spacing

• dimensioning concept

based on large-scale field

and model tests

• small CO2 footprint and

option to cover with

natural vegetation



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Characteristics of high-tensile

meshes and spiral rope nets:

• high performance despite

low weight

• all components have an

uniform strength

• can be installed close to the

ground even in irregular

terrain

• little deformation

• quick to construct

• maintenance-free

• minimal disruption to nature

• can be covered over quickly

with natural vegetation

• permeable to water

• virtually invisible

Ideal protection against slope sliding

close to the surface.



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Advantages over shotcrete walls and

supporting structures made of concrete:

• cost-effective thanks to flexible nail spacing

• no drainage outlets required

• groundwater can circulate freely

• virtually invisible

• no additional strain placed on the slope

• quick and easy to install with no excavation

work required

• stays flexible during tremors and earthquakes

• closed traffic routes can reopen quickly

• 4–9 x smaller CO2 footprint

Advantages over wire rope nets, hexagonal

meshes and heavy square-mesh nets:

• quicker to install thanks to wide panels that

can be unrolled

• easier to adapt to uneven terrain

• stronger

• load-bearing performance can be controlled

• easier to tension

• greater flexibility and dimensional stability

• minimal deflection

TECCO®SYSTEM3 versus conventional systems



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T3 clip

• allows panels to be connected securely• uses the whole width of the panels

P33 spike plate

• standard version

Vegetation matting:

TECMAT®

• reduces the amount of seed washed away

• stabilizes the topsoil layer

P66 spike plate

• optimized nail grid

• less deformation

A safe and secure system

for any type of subsoil.



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TECCO® SYSTEM3 in

unconsolidated soil

• pre-tensioning optimized to minimize

deformation

• simple to connect with no unnecessary overlaps

• even distribution of forces

• quick to cover with natural vegetation

• freely dimensionable nail grid

• spike plates can be selected based on dimensioning

TECCO® SYSTEM3 in rock

• can be installed close to the ground in

any terrain

• freely selectable nail pattern

• very safe working environment as the

mesh can be drilled through

SPIDER® spiral rope net

• spiral rope made from twisted high-tensile

steel wire

• high tensile strength

• can be nailed close to the ground in any terrain

• highly resistant to perforation

• mesh can be drilled through, permitting

the precise positioning of nails on individual

boulders to be secured



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P

Z

2 • b

Developed and tested in laboratory

and large-scale field tests.

The Bavarian Trade Institute (Landesgewerbeanstalt

– LGA) in Nuremberg and other independent

testing institutes have confirmed the load-bearing

performance of the TECCO® SYSTEM3 in numerous

laboratory tests (longitudinal and transverse pulling

direction, connection clips, perforation with/without

soil and shearing). In particular, the tests also

measured the interaction between the mesh, spike

plate and anchorage and calculated the system’s

Laboratory tests RUVOLUM® dimensioning

software developed from

large-scale field tests

In cooperation with Bern University of Applied

Sciences in Burgdorf, a flat test frame measuring

10 x 12 x 1.2 m was filled with gravel, covered with

high-tensile TECCO® meshes and anchored into a

2.5 x 2.5 m up to 3.5 x 3.5 m grid using spike platesand nails so that the calculations could be verified

under as realistic conditions as possible. By gradually

increasing the angle of inclination, the tests showed

that the mesh can successfully hold back 230 metric

tons of material at an angle of up to 85 degrees.

Decisive are the local load transfer of the mesh to the

nail and its punching strength at the upper part of the

spike plate.

Tensile load parallel to the slope,concentrated at certain points: Z

Perforation test on the mesh parallelto the nails: P

Quality control:tensile test of the mesh

tensile strength and load-bearing resistance. Tests

of the mesh links also demonstrated that, thanks to

the TECCO® connection clips, the system has a load-

bearing capacity of 100 %, even at the seams.

www.geobrugg.com/

youtube/TECCO-fullscale

SCAN IT!



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RUVOLUM®dimensioning concept:

Simple planning for increased security.

2. Instabilities near the surface and parallel

to the slope:

If the surface layer is in danger of slipping against a

firmer subsoil, the nails must prevent it from breaking

up. The number and configuration of the nails must be

dimensioned according to the forces calculated.

To help dimension the forces acting on a stabilization

system, we developed a special program based on

geotechnical considerations of equilibrium, which we

make available to planners as an online tool:

http://applications.geobrugg.com

Two studies: The dimensioning

basis underlying the

RUVOLUM® model

1. Local instabilities between the nails:

Where local instabilities also occur between the nails,

we calculate the absorption capacity of the entire

«nailing/mesh covering» system.

Our studies provide proof of our protection and into

account factors such as:

• Slippage in the direction of the slope

• Perforation of the mesh

• Combined load on the nails

• Shearing of the mesh on the edge of the

spike plate

Instabilities near the surface

Global stability

Deploying steel wire mesh to stabilize slopes can

also be used to tackle global stability problems.

Here, the nails required for deeper-lying slip

surfaces are also dimensioned using convention-

al methods and the results compared with the

RUVOLUM® calculation.



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TECCO® G65/4TECCO® G65/3TECCO® G65/2

A cost-effective solution

The TECCO® SYSTEM3 and SPIDER® system can pro-

vide the same level of protection as a conventional

protective covering but using only half as many

nails. This can significantly reduce the total project

costs and the installation time.

Mesh costs

Nailing costs

T o t a l p r o j e c t c o s t s

Conventional

flexible systems



0

TECCO® G65/2

ETA-13/0404

1301-CPD-0898

2.0 mm

-

≥ 1770 N/mm2

GEOBRUGG ULTRACOATING®

65 mm

0.74 kg/m2

3.5 m

40 m

140 m2

104 kg

10 kN

80 kN

40 kN

Technical data.

SPECIFICATION

ETA certificate no.

CE no.

Wire diameter

Spiral wire diameter 1 x 3

Tensile strength of wire

Corrosion protection

Mesh width

Number of meshes, top to bottom 7.0 pcs/m

Number of meshes, side to side 12.0 pcs/m

Tensile strength of mesh, horizontally (for the purposes of comparison only – not for use in dimensioning) ≥ 65 kN/m in accordance with LGA test report 01/2014

Weight per m2

Roll edges Mesh ends knotted and twisted

Roll width

Roll length

Total area per roll

Weight per roll

Load-bearing resistance for load transfer (for use in dimensioning) P33 spike plate

Load-bearing resistance of mesh to tensile loads parallel to the slope and concentrated at certain points (ZR)

Load-bearing resistance of mesh to perforations parallel to the nails (2 · PR)

Load-bearing resistance of the mesh to shearing at the top edge of the spike plate (PR

)

Service life*

Climatic category C2: temperate, rural areas in accordance with EN ISO 12944-2 and ISO 9223 > 120 years

* The standards EN ISO 12944-2 and EN 12500 stipulate ranges for rates of zinc erosion in g/m2/year for each of the climatic categories C1 to C5. This allows the theoretical service life assuming proper use to be calculated.



1111

TECCO® G65/3 TECCO® G65/4 SPIDER® S3-130

ETA-13/0405 ETA-13/0406 ETA-13/0477

1301-CPD-0899 1301-CPD-0900 1301-CPD-0913

3.0 mm 4.0 mm 3.0 mm

- - 6.5 mm

≥ 1770 N/mm2 ≥ 1770 N/mm2 ≥ 1770 N/mm2

GEOBRUGG SUPERCOATING® GEOBRUGG SUPERCOATING® GEOBRUGG SUPERCOATING®

65 mm 63 mm 143 mm

1.65 kg/m2 3.3 kg/m2 2.60 kg/m2

3.5 m 3.5 m 3.5 m

30 m 20 m 20 m

105 m2 70 m2 70 m2

175 kg 231 kg 182 kg

30 kN / 45 kN 50 kN / 75 kN 45 kN/ 70 kN

180 kN / 240 kN 280 kN / 370 kN 230 kN / 300 kN

90 kN / 120 kN 140 kN / 185 kN 115 kN / 150 kN

7.0 pcs/m 7.2 pcs/m 3.3 pcs/m

12.0 pcs/m 12.0 pcs/m 5.6 pcs/m

≥ 150 kN/m in accordance with LGA test report 01/2014 ≥ 250 kN/m in accordance with LGA test report 01/2014 ≥ 220 kN/m in accordance with LGA test report 01/2014

Mesh ends knotted and twisted Mesh ends knotted and twisted Mesh ends knotted and twisted

P33 / P66 spike plates P33 / P66 spike plates P33 / P66 spike plates

90–120 years 90–120 years 90–120 years

SUPERCOATING® ensures at least three times (EN 1993-1-11, AS/NZS 4534) and ULTRACOATING ® six times longer service lives compared to wire galvanized in a conventional manner.



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Our engineers and partners analyze the situation

together with you and then, working together with

local engineering firms, present their solutions.

Painstaking planning is not the only thing you can

expect from us, however; since we have our own

production plants on four continents, we can offer not

only short delivery times but also the best possible

customer service right on your doorstep. To ensure

your project runs smoothly, we deliver pre-assembled

and clearly labeled system components right to the

construction site. Here, we can also provide technical

support if required – from installation right through to

final acceptance of the structure.

Product liability

Rockfalls, landslips, debris flows, shallow landslides

and avalanches are natural events and therefore

cannot be calculated. For this reason, it is impossible to

determine or guarantee absolute safety for persons

and property using scientific methods. This means that,

to provide the desired level of protection, protective

systems must be monitored and serviced regularly and

appropriately. In addition, events that exceed the

system’s calculated absorption capacity may cause

damage. The use of non-original parts as well as

severe corrosion, such as might be caused by

environmental pollution, can reduce the level of

protection provided.

Geobrugg AGGeohazard Solutions

Aachstrasse 11 • CH-8590 Romanshorn • Switzerland

Phone +41 71 466 81 55 • Fax +41 71 466 81 50

www.geobrugg.com • [email protected]

A company of the BRUGG Group

ISO 9001 certified

Geobrugg, a reliable partner.

Diseño de taludes

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