GRV Circular Formwork Tie-less Circular Formwork with

GRV Circular Formwork
Tie-less Circular Formwork
with Articulated Waling GRV
Edition 08/2009
PERI GmbH
Formwork Scaffolding Engineering
P.O. Box 1264
89259 Weissenhorn
Germany
Tel +49 (0)73 09.9 50-0
Fax +49 (0)73 09.9 51-0
info@peri.de
www.peri.de
Important Notes:
Without exception, all current safety regulations
must be observed in those countries where our
products are used.
The illustrations in this brochure are photographs of
real site situations. Safety or formwork anchor
details are therefore not to be taken as a definitive
guide to the way the equipment is to be used.
Safety precautions and allowable loads are to be
strictly observed. Separate structural calculations
are required for any deviations from the standard
design data.
The information contained herein is subject to technical changes in the interests of progress.
Contents
2
GRV Articulated Waler Circular Formwork
For circular structures without ties
4
Cost-effective customized solutions
6
Assembly service
8
Example of use
10
The GSRV Articulated Spindle Waler
12
Planning aid for circular tank
14
Components
20
PERI International
1
GRV Articulated Waler Circular Formwork
For circular structures without ties
When used in a closed ring of any
radius the GRV system requires no
ties. The savings achieved in this way
are considerable:
Ties cost money, and introduce the risk
of impairing the concrete’s watertightness in, for example, sedimentation
tanks. Taking the erection and dismantling times into account as well, it
be-comes obvious why the PERI GRV
system saves so much time and
material.
The GRV system can also be used for
special formwork with ties.
GRV in use as tapering
circular column formwork.
Complete circular tank
shuttered with GRV
without using any ties.
2
Circular formwork with
GRV on PERI KGF 240
climbing platforms.
Funnel-shaped formwork
for a stormwater
settlement tank.
3
Cost-effective customized solutions
Arched Bridges with GRV
PERI GRV articulated waler is always
the most economical solution for
circular, segmental, compound and
other arch shapes.
Combined with GT 24 Girders, PERI
push-pull props and compression
braces, almost any arched bridge can
be shuttered almost entirely with
standard components. Irrespectively of
the size of the arch.
13.50 m wide and 8.40 m high arch
formwork. GRV articulated waler
with GT 24’s and supported by
RS 1000 push-pull props.
4
R=1
0.0 0
m
Multipurpose Connector GRV for attaching
compression spindles.
Detail
T
G
24
G
RV
90
T
G
24
VT
20
Bearing Bloc GRV
left or right
Wedge Lowering
Device 420 kN
Bearing Block GRV,
left
Bearing Block GRV,
right
230
DW 15
Anchor Sleeve DW 15
5
The PERI assembly service
The basic assembly of the GRV panels is carried out on site, or more efficiently and economically in PERI’s
preassembly shop.
Even complicated cross sections for settlement
tanks are simple with PERI GRV.
To achieve the required accuracy this
arched bridge form is fully preassembled, then split into segments for
delivery to the site.
Assembly of GRV panels with
segment boards.
6
The GRV articulated waler is continuously adjustable to accommodate
virtually all circular structures.
Note:
Preassembled GRV panels must not
exceed the permissible width during
transportation.
3.
Insert adjusting screws with M24 nuts
loosely fitted, then tighten the two nuts
on the inside waler. Now use the two
remaining nuts to line up the outside
walers with the drilled holes. (Fig. 3)
This procedure eliminates wale pin play,
with the inside formwork in compression, and the outside formwork in tension. The girders can now be fitted as
required.
90
Hole
ø 40 mm
Waler
Waler
R
2.
Lay the three articulated walers on the
template and connect with two pins.
Only line up the two outside walers
roughly with the hole drilled. (Fig. 2)
90
90
h
Pin pitc
dius
circle ra
1.
Mark out the pin pitch circle radius
required on a template, and drill four
40 mm holes at the appropriate spacing
for the size of articulated waler chosen
– 900, 750, 600 or 300 mm – centrally
on the circular arc. (Fig. 1)
Waler
Assembly template
3000
Fig. 1
Insert pins
Position pin roughly on pitch circle
Fig. 2
Fig. 3
7
Example of use
Tank with haunch
Inside radius:
6.00 m
Wall thickness: 0.30 m
Pour height:
5.00 m
ra
A
Assembling panels
Inside panel
s
diu
6.3
0m
A
Outside panel
Li
Lo
Assembly platform
The panels’ formlining joint is lined up
radially with the centre line of the pin
between the girders.
8
Timber cleat
GRV 90
60
5.00
Section A-A
35 30
Alternative formlining joints
TPA filler support
1. Formlining joint between the girders
With TRIO BFD alignment coupler and filler
support.
BFD alignment coupler
Plywood Strip
4 x 20 mm
nailed
on center
Timber spacer
2. Formlining joint on the girders
With a clamping device and the DW 15
anchor bolt sleeve, Item no. 026280.
Timber
DW 15 anchor bolt sleeve
Plywood Strip
4 x 20 mm
nailed
on center
Timber spacer
Wingnut Pivot
Plate
DW 15 tie rod
Timber
9
The GSRV Articulated Spindle Waler
Continuously adjustable to any radius
Ways of adjusting the PERI GRV
system
The patented joints of the GRV waler
allow the following minimum pin pitch
circle radii.
GRV
GRV
GRV
GRV
90,
75,
60,
30,
r
r
r
r
min
min
min
min
=
=
=
=
1.80 m = concrete radius* of 2.10 m
1.50 m = concrete radius* of 1.80 m
1.20 m = concrete radius* of 1.50 m
0.60 m = concrete radius* of 0.90 m
*when formwork erected in the normal way
Conforming to
small radii.
Tie-less shuttering, even with large
radii, particularly cost-effective when
several identical circular structures
are to be concreted in succession.
10
Adjusting the articulated spindle
waler with the GSRV hook spanner.
Adjustability of the GRV joint
The STS 360 adjusting spindle is used
for all GRV 90, 75, 60 and 30 connections as well as with GSRV 65 – 90.
39
α
Outside form
Spindle STS 260 a = 18°
Spindle STS 360 a = 26°
Note:
When usisng the GRV 30 the
STS 260 adjusting spindle must be
fitted on the inside ring.
Pin pitch circle radii less than 1.0 m
can be set with shortened spindles.
235 mm long spindles are employed
for the smallest pitch circle radius of
0.60 m.
max. 14°
GRV
9
GRV 0 = 1.80
75 =
m
GRV
1
60 = .50 m
GRV
1
30 = .20 m
0.60
m
350
sma
lle
circl st pin p
e rad
itch
ius
39
Inside form
11
12
[m]
[m]
[m]
[m]
[m]
[m]
[m]
-
,
,
,
0, 2 4
,
0, 0 3
inside
No. GRVs Na =
Qty
= Ui =
Ni
walers
Li/panel width for
Ui = 2 x ri x π
Li/waler section
Internal circumference
inside
Na x 3 or 2 =
Qty
outside
outside
Lo/waler section
Lo/waler section for
[m]
=
=
=
walers
=
Length
= Ua =
Na
External circumference Ua = 2 x ra x π
[m]
[m]
=
=
inside
Check this quantity against the number of walers / ring actually chosen
Length
4. Determine length of formlining L
Ni x 3 or 2 =
3. Number of girders N
up to ø
Qty
Total
up to ø
30 m
20 m
10 m
[m]
[m]
[m]
3
2
1
Recommendation:
Spindle waler per ring
up to ø
Spindle waler
Qty
GRV 60
6,974 GRV 90 =
8,369 GRV 75 =
10,462 GRV 60 =
9
0
Outside rings x Na
GRV 75
,
,
,
0, 2 4
,
0, 0 3
Qty
GRV 90
+
+
+
+
+
outside
[m]
[m]
[m]
[m]
[m]
[m]
[m]
pin pitch circle
radius x
Outside pin pitch
circle radius
Outside concrete radius Ra
Formlining thickness
Timber Boarding
PERI girder
Packing timber as required
up to pin centre line
outside
x Ni
Inside rings
6,988 GRV 90 =
8,385 GRV 75 =
10,482 GRV 60 =
9
0
inside
GRV 75, 60, 30 and GSRV 60 – 90 spindle walers are used for closing the
circumference.
pin pitch circle
radius x
Total requirements
No. GRVs Ni =
2. Number of articulated walers N
Inside pin pitch
circle radius
Inside concrete radius Ri
Formlining thickness
Timber Boarding
PERI girder
Packing timber as required
up to pin centre line
1. Determination of pin pitch circle radius R
Planning aid for circular tank
Table for determining pin pitch circle radius and number of articulated walers required approximately.
The exact values can be determined on a full scale plan or with the aid of a CAD system.
The PERI GRV system takes a
maximum compression or tension
force of 400 kN in a complete circle.
For calculating the actual waler tension
force:
Example:
Radius r = 14 m
Concrete pressure Pb = 30 kN/m2
Loading height h = 90 cm
The external ring tension force (Zring),
is critical, since the inner compression
force (Dring) is always smaller.
Zring = 14 m x 30 kN/m2 x 0.90 m
Zring = r x Pb x h
Zring = 378 kN < 400 kN permissible
where:
r = outside radius [m]
Pb = concrete pressure [kN/m2]
h = height of load carried by the
waler [m]
External tension forces Zring
Internal compression Dring
13
GRV Circular Formwork
Item no. Weight kg
021140
021130
021120
021110
17,600
23,900
27,100
30,200
Articulated Waler GRV
Articulated Waler GRV 30
Articulated Waler GRV 60
Articulated Waler GRV 75
Articulated Waler GRV 90
For tie-less forming of circular structures with
closed formwork ring.
L
380
680
830
980
X
300
600
750
900
Technical Data
Permissible compression and tension load 400 kN.
L
X
Ø40
021150
49,200
Articulated Adjustable Waler GSRV 65-90
For tie-less forming of circular structures with
closed formwork ring. For the infilling, adjustable
from 650 to 900 mm.
82
70
152
Ø21
Technical Data
Permissible compression and tension load 400 kN.
min 730
max 980
min 650
max 900
022210
1,900
82
70
140
Ø40
Pivot Pin GRB, galv.
For connecting of GRV Articulated Walers and
GSRV 65-90 Articulated Adjustable Waler.
200
145
Ø6
022230
14
0,033
Accessories
Cotter Pin 5/1, galv.
Ø40
GRV Circular Formwork
Item no. Weight kg
022230
0,033
Cotter Pin 5/1, galv.
For pins Ø 25 mm to Ø 40 mm.
Ø5
2,450
Hook Spanner HKS for GRV
For adjusting of the GSRV 65-90 Articulated
Adjustable Waler.
40
105
021160
385
021240
021250
0,907
1,260
Adjusting Bolt STS
Adjusting Bolt STS 260, galv.
Adjusting Bolt STS 360, galv.
For adjusting of GRV Articulated Walers and
GSRV 65-90 Articulated Adjustable Waler.
18
Note
Spanner size SW 17.
260 / 360
M 24
022250
021260
0,100
0,178
Accessories
Nut ISO 4032 M24-8, galv.
Half-Round Washer HRS, galv.
022250
0,100
Nut ISO 4032 M24-8, galv.
SW 17
Note
Spanner size SW 36.
M 24
SW 36
0,178
Half-Round Washer HRS, galv.
Ø26
44
021260
16
58
15
GRV Circular Formwork
Item no. Weight kg
021270
15,000
Bearing Block GRV, left
For the use of GRV Articulated Walers for special
applications.
70
210
150
Ø40
200
021280
15,100
200
Bearing Block GRV, right
For the use of GRV Articulated Walers for special
applications.
82
210
150
Ø40
200
021290
4,880
200
Multi-purpose Connector GRV
For the use of GRV Articulated Walers for special
applications.
190
100
Ø21
100
16
90
190
100
60 50
Ø22
17
18
19
PERI International
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