Spiles and Forepoling Boards - DYWIDAG

Spiles and Forepoling Boards
2
Contents
Introduction................................................................................................................... 3
Rebar Spiles.................................................................................................................. 4
Tubular Spiles................................................................................................................ 6
IBO - Self-Drilling Spiles ............................................................................................... 8
Forepoling Boards....................................................................................................... 10
Introduction
Spiles and forepoling boards are used
as temporary pre-support system for the
working area. They ensure the stability of
the perimeter of the open span until the
primary lining is installed.
Depending on the foundation soil
characteristics, different spile types
are used in order to achieve the best
technical solution for each project.
The products range from rebar spiles,
IBO - Self-Drilling Spiles or the
AT - TUBESPILETM to forepoling boards,
which permit driving in non-cohesive
ground.
3
Rebar Spiles
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.
Fields of Application
■■ Tunnel driving in blocky and jointed
rock mass
■■ Tunnel driving in soft, homogenous
foundation soil conditions
Main Advantages
■■ Practice-proven spile system
■■ Secure and simple installation
■■ Universally applicable
■■ Installation using conventional drilling
machines
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.
4
Rebar Spiles
Specifications
Bar diameter 1)
Delivery lengths 2)
[mm]
[m]
20
25
28
3/4/6
30
36
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 request
Technical Features
■■ 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 Procedure
■■ 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
5
Tubular Spiles
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.
Fields of Application
■■ Tunnel driving in blocky and jointed
rock mass
■■ Tunnel driving in soft, homogenous
foundation soil conditions
Main Advantages
■■ Practice-proven spile system
■■ Secure and simple installation
■■ Universally applicable
■■ Installation using conventional drilling
machines
■■ Optionally also available as injection
spile
■■ Higher section modulus than ram spiles
or self-drilling spiles at comparable
weight
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.
6
Tubular Spiles
Specifications
Outer diameter 1)
Wall thickness
Delivery lengths 2)
[mm]
[mm]
[m]
38
4
51
3.2
3/4/6
51
4.5
1)Minimum steel grade S 235 (EN 10025-2)
2)Differing shipping lengths and injection boreholes according to customer demands are
available on request
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 Procedure
■■ 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
7
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.
Fields of Application
■■ Pre-support in any kind of foundation
soil
■■ Especially suitable for foundation soils
with unstable boreholes
Main Advantages
■■ Installation using conventional drilling
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
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.
8
IBO - Self-Drilling Spiles
System Components
■■ IBO - Self-Drilling Spile
■■ Optionally available with injection
holes
■■ Spile drill bits or welded drill bit
Specifications
Outer diameter 1)
Delivery lengths 2)
[mm]
[m]
R32
R38
3.0 / 4.0
R51
1)Technical Data is enclosed in the DYWI® Drill Hollow Bar System brochure
2)Differing shipping lengths and injection holes according to customer demands are available
on request
Installation Procedure
■■ Assembly of the IBO - Self-Drilling Spile
and connection onto the drill boom
■■ Rotary-percussive self-drilling
installation without casing: Singleuse 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
Technical Features
Accessories
Further Information
■■ Extensive drill bit portfolio for different
foundation soil conditions
■■ Mortar-mixing pumps
■■ DYWI® Drill Hollow Bar System
brochure
■■ Mortaring of the annular gap increases
the load transmission and load bearing
capacity
■■ DYWI® Inject System
■■ Optionally with injection holes for
ground improvement
■■ Injection adapter
■■ Sleeve pipe packers
■■ Rock drilling equipment: shank adapters,
couplings, and coupling adapters
■■ Further information about accessories
can be found in DSI system brochures
and technical approvals
9
Forepoling Boards
Forepoling boards are used for laminaractive pre-support, which is particularly
suitable for unstable, non-cohesive
foundation soil. This support is rammed
into the foundation soil using hydraulic
drifters.
Fields of Application
■■ Pre-support in non-cohesive
foundation soil
■■ Pre-support in nearly non-cohesive
foundation soil
Main Advantages
■■ Installation using conventional drilling
machines
■■ Secure and simple installation
■■ Closed support at the open span
■■ Ramming minimizes drive-induced
rock mass stress relaxation
System Description
Forepoling boards are rammed over
the support arch in a single step with
conventional 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
10
Forepoling Boards
Specifications
t
30
35
120
175
B
Forepoling boards Type A
Characteristics
Thickness
Length 1)
Width 2)
Weight
Weight
Resisting torque
Symbol
Unit
Type A3
Type A4
Type A5
Type A6
t
[mm]
3
4
5
6
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 3.00
B
[mm]
220
220
220
220
m
[kg/m]
6
8
10
12
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 36.0
Wx
[cm³]
8.9
10.6
12.2
13.8
30
35
140
t
1)Special lengths available on request
2)Guidance value installation width with overlapping: 5.7 pieces per meter
185
B
Forepoling boards Type B 1)
Characteristics
Thickness
Length 2)
Width 3)
Weight
Weight
Resisting torque
Symbol
Unit
Type B3
Type B4
Type B5
Type B6
t
[mm]
3
4
5
6
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 3.00
B
[mm]
220
220
220
220
m
[kg/m]
6
8
10
12
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 36.0
Wx
[cm³]
8.9
10.6
12.2
13.8
1)Dimension sheets and weight tables
are available on request
2)Special lengths available on request
3)Guidance value installation width with
overlapping: 5.4 pieces per meter
Technical Features
■■ Ramming with drill-driving jumbo
■■ Secure and simple installation
■■ Closed and open support of the tunnel
perimeter
■■ Ramming prevents settlement
and stress release ahead of the
construction
11
Austria
EMEA
DYWIDAG-Systems International GmbH
Alfred-Wagner-Strasse 1
4061 Pasching/Linz, Austria
Phone +43-7229-610 49 0
Fax +43-7229-610 49 80
E-mail [email protected]
www.alwag.com
Argentina
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belgium
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DSI Underground Systems Inc.
9786 S Prosperity Road
West Jordan, UT 84081, USA
Phone +1-801-973 7169
Fax +1-801-973 7172
E-mail [email protected]
www.dsiunderground.com
Chile
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DSI Chile Industrial Ltda.
Las Encinas #1387, Valle Grande
Lampa, Santiago de Chile, Chile
Phone +56-2-596 96 20
Fax +56-2-596 96 69
E-mail [email protected]
www.dsi-chile.com
Egypt
estonia
Finland
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Greece
APAC/ASEAN
DYWIDAG-Systems International Pty. Ltd.
25 Pacific Highway
Bennetts Green, NSW 2290, Australia
Phone +61-2-49 48 90 99
Fax +61-2-49 48 99 56
E-mail [email protected]
www.dsiminingproducts.com/au
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”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 registered
trademarks of DYWIDAG-Systems International GmbH.
”Combi Coat®” and ”CT-Bolt” are trademarks
of Vik Ørsta AS.
DYWIDAG-Systems International GmbH
is a partner of Vik Ørsta AS.
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04351-1/04.13-web-he
Please note:
This brochure serves basic information
purposes only. Technical data and information
provided herein shall be considered
non-binding and may be subject to change
without notice. We do not assume any liability
for losses or damages attributed to the use
of this technical data and any improper
use of our products. Should you require
further information on particular products,
please do not hesitate to contact us.
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