DSI ALWAG Systems Spiles and Forepoling Boards En

8/19/2019 DSI ALWAG Systems Spiles and Forepoling Boards En

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Spiles and Forepoling Boards


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Spiles and forepoling boards are usedas temporary pre-support system for thworking area. They ensure the stability othe perimeter of the open span until theprimary lining is installed.

Depending on the foundation soilcharacteristics, different spile typesare used in order to achieve the besttechnical solution for each project.The products range from rebar spiles,IBO - Self-Drilling Spiles or the

AT - TUBESPILETM to forepoling boardswhich permit driving in non-cohesiveground.

Contents

Introduction

Introduction ..................................................................................................................3

Rebar Spiles ................................................................................................................. 4

Tubular Spiles ............................................................................................................... 6

IBO - Self-Drilling Spiles ..............................................................................................8

Forepoling Boards ...................................................................................................... 10


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Rebar Spiles

Fields of Application

Main Advantages

System Description

Rebar spiles consist of smooth or ribbed

steel bars that are pointed on one side.

They are installed in pre-drilled grouted

or ungrouted spile holes or are rammed

into the foundation soil. Pre-drilled

rebar spiles are installed in jointed and

blocky rock mass as pre-support against

falling blocks; ram spiles are installed in

homogenous, soft foundation soil.

By ramming, a loosening of the

foundation soil is prevented, and an

optimum initial condition for arching

between the spiles is achieved. Following

driving, the load of the foundation soil

is transferred on the bearings by the

resisting torque of the spiles. These are

the ground ahead of the face and the

support arch in the already supported

excavation area.

Rebar spiles and tube spiles are

universally applicable as pre-support.

They can be installed into pre-drilled,

stable boreholes in blocky foundation

soil as well as rammed into soft,

homogenous foundation soil.

■ Tunnel driving in blocky and jointed

rock mass

■ Tunnel driving in soft, homogenous

foundation soil conditions

■ Practice-proven spile system

■ Secure and simple installation

■ Universally applicable

■ Installation using conventional drilling

machines

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Rebar Spiles

Technical Features

Installation Procedure

■ Simple and uncomplicated installation into pre-drilled spile holes

■ Mortared annular gaps improve contact with the rock mass

■ Ramming is an installation method which retains the original stress condition

■ The foundation soil is displaced by ramming. This permits optimum conditions for

subsequent load carrying

■ Installation is possible above as well as through support arches

■ Installation into pre-drilled spile holes■ Pre-drilling of the spile holes through or over the support arch■ Filling of the spile holes with mortar (only for mortared installation)■ Installation of the Rebar spile

■ Installation as ram spile■ Ramming of the rebar spiles through or over the support arch

Bar diameter 1) [mm] 20 25 28 30 36Delivery lengths 2) [m] 3 / 4 / 6

1) Spiles from smooth or ribbed concrete steel with a minimum steel grade of B 500 B(DIN 488-1 and ÖNORM B 4707)

2) Pointed on one side; diverse lengths and unpointed concrete steel spiles are available on reques

Specifications


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Tubular Spiles


Main Advantages

System Description

Tube spiles consist of a steel tube, which

is optionally provided with a welded ram

top. The installation is carried out with

conventional drilling machines. The tube

spiles are either installed into pre-drilled

spile holes or rammed directly into the

foundation soil. Pre-drilled tube spiles

are used for jointed and blocky rock

mass as pre-support against falling rock

mass, whereas ram spiles are applied in

homogenous, soft foundation soil.

By ramming, a loosening of the

foundation soil is prevented, and an

optimum initial condition for arching

between the spiles is achieved. Following

driving, the load of the foundation soil is

transferred to the bearings by the spiles.

These are the ground ahead of the face

and the primary lining.

Tubular spiles and rebar spiles are

universally applicable for pre-support

measures. They can be installed into

predrilled, stable boreholes in blocky or

jointed rock mass as well as rammed

into soft, homogenous foundation soil.

■ Tunnel driving in blocky and jointed

rock mass

■ Tunnel driving in soft, homogenous


■ Practice-proven spile system

■

Secure and simple installation ■ Universally applicable


machines

■ Optionally also available as injection

spile

■ Higher section modulus than ram spiles

or self-drilling spiles at comparable

weight

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Tubular Spiles

Technical Features


■ Simple and uncomplicated installation into pre-drilled boreholes

■ Tube-ram spiles with steel point are available on request

■ Foundation soil preserving installation by ramming – the original stress condition

remains

■ Ramming displaces the foundation soil and allows for optimum load carrying

characteristics at a later stage

■ Installation is possible over as well as through the support arch

■ High section modulus in relation to the weight

■

Also available as injection spile with injection holes for ground improvement

■ Installation into pre-drilled spile holes■ Pre-drilling of spile holes through or over the support arch■ Insertion of tube spiles

■ Installation as ram spile■ Ramming of the tube spile through or over the support arch

Outer diameter 1) [mm] 38 51 51

Wall thickness [mm] 4 3.2 4.5

Delivery lengths 2) [m] 3 / 4 / 6

1) Minimum steel grade S 235 (EN 10025-2)

2) Differing shipping lengths and injection boreholes according to customer demands are

available on request

Specifications


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IBO - Self-Drilling Spiles

IBO - Self-Drilling Spiles form part of the

DYWI® Drill Hollow Bar System product

range. They are ideal for pre-support

measures in all foundation soil types.

Especially in unstable boreholes, the fast

and self-drilling installation offers distinct

advantages compared to conventional

spile types.

IBO - Self-Drilling Spiles support local

instabilities in the working area.

In poor foundation soil, this system is an

excellent alternative to conventional ram

spiles or steel tube spiles.


Main Advantages

System Description

IBO - Self-Drilling spiles are installed with

conventional drill booms using rotary

percussive drilling. The installed hollow

bar simultaneously serves as drilling rod

and reinforcement. The drilling energy is

transferred onto the drill bit, which has

a higher outer diameter than the hollow

bar. Cooling, flushing, and backflush

of cuttings is accomplished with water

between the foundation soil and the

IBO - Self-Drilling Spiles.

■ Pre-support in any kind of foundation

soil ■ Especially suitable for foundation soils

with unstable boreholes


machines

■

Secure, simple, and fast installation ■ Unproblematic application in case of

unstable boreholes

■ Spile drilling and spile installation in

one step

■ Greater spile lengths can be achieved

with couplings

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IBO - Self-Drilling Spiles

System Components

■ IBO - Self-Drilling Spile

■ Optionally available with injection

holes

■ Spile drill bits or welded drill bit

■ Assembly of the IBO - Self-Drilling Spile

and connection onto the drill boom

Outer diameter 1) [mm] R32 R38 R51Delivery lengths 2) [m] 3.0 / 4.0

1) Technical Data is enclosed in the DYWI® Drill Hollow Bar System brochure2) Differing shipping lengths and injection holes according to customer demands are available

on request

Specifications

Technical Features Accessories Further Information


■ Extensive drill bit portfolio for different


■ Mortaring of the annular gap increases

the load transmission and load bearing

capacity

■ Optionally with injection holes for

ground improvement

■ Mortar-mixing pumps

■ Injection adapter

■ DYWI® Inject System

■ Sleeve pipe packers

■ Rock drilling equipment: shank adapters,

couplings, and coupling adapters

■ DYWI® Drill Hollow Bar System

brochure

■ Further information about accessories

can be found in DSI system brochure

and technical approvals

■ Rotary-percussive self-drilling

installation without casing: Single-

use drill bit and hollow bar serving as

drilling rod; flushing with water or an

air-water-mixture

■ Optional extension with couplings

■ Decoupling from the drifter, optional

subsequent injection using an injection

adapter


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Forepoling Boards

Forepoling boards are used for laminar-

active pre-support, which is particularly

suitable for unstable, non-cohesive

foundation soil. This support is rammed

into the foundation soil using hydraulic

drifters.


Main Advantages

System Description

Forepoling boards are rammed over

the support arch in a single step withconventional drill booms via a ram shoe.

They are either installed overlapping

or with a gap when the foundation soil

shows little cohesion.

■ Steel plate with one or two longitudinal

seams■ Plate thickness: 3 - 6 [mm]■ Length: 1,250 - 3,000 [mm]■ Width: ca. 220 [mm]

■ Forepoling board template■ Different versions available on request

■ Pre-support in non-cohesive

foundation soil

■ Pre-support in nearly non-cohesive

foundation soil


machines


■ Closed support at the open span

■ Ramming minimizes drive-induced

rock mass stress relaxation

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120

175

3 5

3 0

t

B

140

185

3 5

3 0

t

B

Forepoling Boards

Technical Features

■ Ramming with drill-driving jumbo


■ Closed and open support of the tunnel

perimeter

■ Ramming prevents settlement

and stress release ahead of the

construction

Specifications

Forepoling boards Type A

Forepoling boards Type B 1)

Characteristics Symbol Unit Type A3 Type A4 Type A5 Type A6

Thickness t [mm] 3 4 5 6Length 1) L [m] 1.25 1.50 2.00 2.50 3.00 1.25 1.50 2.00 2.50 3.00 1.25 1.50 2.00 2.50 3.00 1.25 1.50 2.00 2.50 3.0Width 2) B [mm] 220 220 220 220Weight m [kg/m] 6 8 10 12Weight mPcs [kg/pcs] 7.5 9.0 12.0 15.0 18.0 10.0 12.0 16.0 20.0 24.0 12.5 15.0 20.0 25.0 30.0 15.0 18.0 24.0 30.0 36.

Resisting torque Wx [cm³] 8.9 10.6 12.2 13.8

1) Special lengths available on request

2) Guidance value installation width with overlapping: 5.7 pieces per meter

Characteristics Symbol Unit Type B3 Type B4 Type B5 Type B6 Thickness t [mm] 3 4 5 6Length 2) L [m] 1.25 1.50 2.00 2.50 3.00 1.25 1.50 2.00 2.50 3.00 1.25 1.50 2.00 2.50 3.00 1.25 1.50 2.00 2.50 3.0Width 3) B [mm] 220 220 220 220Weight m [kg/m] 6 8 10 12Weight mPcs [kg/pcs] 7.5 9.0 12.0 15.0 18.0 10.0 12.0 16.0 20.0 24.0 12.5 15.0 20.0 25.0 30.0 15.0 18.0 24.0 30.0 36.

Resisting torque Wx [cm³] 8.9 10.6 12.2 13.8

1) Dimension sheets and weight tablesare available on request

2) Special lengths available on request3) Guidance value installation width with

overlapping: 5.4 pieces per meter

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0 4 3 5 1 1 / 0 4 1 3 w e b h e

Please note:This brochure serves basic informationpurposes only. Technical data and informationprovided herein shall be considerednon-binding and may be subject to changewithout notice. We do not assume any liabilityfor losses or damages attributed to the useof this technical data and any improperuse of our products. Should you requirefurther information on particular products,please do not hesitate to contact us.

” ALWAG” (AM 952/79), ” AT” (AM 6138/2003),” AT-SYSTEM” (AM 6139/2003),”DYWI®” (4197869), ”LSC” (AM 4326/2008),”OMEGA-BOLT®” (3258282),”POWER SET” (AM 6163/2002), and”TUBESPILE” (AM 4328/2008) are registeredtrademarks of DYWIDAG-Systems International GmbH.”Combi Coat®” and ”CT-Bolt” are trademarksof Vik Ørsta AS.DYWIDAG-Systems International GmbHis a partner of Vik Ørsta AS.

EMEA DYWIDAG-Systems International GmbH Alfred-Wagner-Strasse 14061 Pasching/Linz, AustriaPhone +43-7229-610 49 0Fax +43-7229-610 49 80E-mail [email protected]

North AmericaDSI Underground Systems Inc.9786 S Prosperity Road

West Jordan, UT 84081, USA Phone +1-801-973 7169Fax +1-801-973 7172E-mail [email protected]

South AmericaDSI Chile Industrial Ltda.Las Encinas #1387, Valle GrandeLampa, Santiago de Chile, ChilePhone +56-2-596 96 20Fax +56-2-596 96 69E-mail [email protected]

APAC/ASEANDYWIDAG-Systems International Pty. Ltd.25 Pacific HighwayBennetts Green, NSW 2290, AustraliaPhone +61-2-49 48 90 99Fax +61-2-49 48 99 56E-mail [email protected]/au

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DSI ALWAG Systems Spiles and Forepoling Boards En