Ênfase em Jet Grouting

Transcrição

MELHORIA, PRÉ-SUPORTE E REFORÇO
EM MACIÇO TERROSO E ROCHOSO –
ÊNFASE EM JET GROUTING EM TÚNEIS
COMITÊ BRASILEIRO DE TÚNEIS DA ABMS
UNIMETRO
METRO – SP
Palestra: AKIRA Koshima
Gerente Técnico
31 de Outubro de 2013
Biography
AKIRA KOSHIMA
Akira é Gerente Técnico da NOVATECNA S.A há 24
anos, em São Paulo, Brasil. É o responsável técnico
da empresa pelas obras realizadas em Jet Grouting
no Brasil e no Exterior (Portugal, Espanha, Venezuela
e Peru)
Atua nas áreas de projetos, acompanhamento de
obras, controle de qualidade, desempenho de
comportamento, supervisão e consultoria, com
liderança sobre as equipes em que participa.
Participou em mais de 70 obras de túneis
executadas, em mais de 10 obras de cortinas de
barragens, além de obras de fundações, contenções
de escavações profundas, estradas e estabilizações
de encostas. Responde pela aplicação do Jet Grouting
em melhoria, reforço e tratamento de maciços .
31/10/2013
É co-editor do livro “TÚNEIS DO BRASIL”, lançado em
23 de Junho de 2006 pelo CBT.
Foi presidente do CBT- Comitê Brasileiro de Túneis da
ABMS, gestão 2003 a 2006. É membro do Conselho
Diretor da ABMS.
Autor de mais de 60 trabalhos técnicos e científicos
publicados em congressos nacionais, internacionais e
periódicos.
É co-autor do capítulo 18 do livro, abordando o tema
Reforço do Solo com Jet Grouting- “FUNDAÇÕES –
TEORIA E PRÁTICA”, publicada pela ABMS –ABEFeditada pela PINI, em Novembro de 1996;
É formado há 37 anos em Engenharia Civil pela Escola
Politécnica da Universidade de São Paulo (1974).
Mestre em Engenharia de Solos pela mesma escola
em 1983.
"Melhoria, Pré-suporte e ReforçoÊnfase em Jet Grouting.
32 anos de Jet Grouting
‘
31/10/2013
3
WTC2013 training session
‘Ground Improvement, Pre-Support & Reinforcement’
Geneva, Switzerland 31 May – 01 June 2013
Jet grouting – aspects of execution - case
histories
Part 1 – Akira Koshima – Tech. Manager of Novatecna - Brazil
Part 2 – José Luís Machado do Vale – Geot.Eng.–SPG/CPT Portugal
31/10/2013
Jet grouting in tunneling
Aspects of execution - case histories
Latin America and other countries
Part 1
1. Historical evolution in Latin America
2. Developing the technology and on-site
solutions
3. Metro station - Luz, Brazil
Clique para editar o estilo do subtítulo mestre
4. Metro station - Los Teques, Venezuela
‘Ground Improvement, Pre-Support & Reinforcement’- Geneva,
Switzerland 31 May – 01 June 2013
1. Historical evolution
of jet grouting
in Latin America
TIMELINE
Apud Burke; Gazzarini; Hurley – Jet Grouting & ASCE Guideline
Short Course - DFI-4ºICOG- FEB. 2012 –NEW ORLEANS -USA
JET 1 – 1979
Venezuela – CCP-Italy
Since 1975 – Italy (Colla)
JET GROUTING > 1980 - NOVATECNA
Brazil – GUATTERI & COLLA
JET 1 / 2 > 1983 Techint/Novatecna
Argentina and other countries
JET 1 > 1983 - SoilJet
California - USA
Jet Grouting > 1994 Novatecna
Jet Grouting > 1998 Tecnasol -FGE
Lisbon –Clique
Portugal
– Portugal
para editar o estiloLisbon
do subtítulo
mestre
Jet Grouting > 2000 – Novatecna/Geotecna
Caracas/Los Teques - Venezuela
Jet Grouting > 2006 – Tecnasol/Novatecna
Barcelona – Espanha
JET GROUTING IN LATIN AMERICA AND OTHERS COUNTRIES
Photo-1
Photo-2
1- Image of jet disaggregating soil using cement grout at 800 km / h.
2 - Field test - various diameters and parameters.
3 - Construction site - pump, silo, mixer and agitator.
4 - Machines Clique
for vertical
and horizontal
para
editar o JG.
estilo do subtítulo mestre
Photo-4-Horizontal
Photo-4-Vertical
Photo-3
1. Historical evolution of jet grouting in Latin America
2. Developing the technology
and typical on-site solutions
2.1 –
2.2 –
2.3 –
2.4 –
2.5 -
Jet 1 – monofluid – CCP
> 1980
Jet 2 – bifluid – JG or JSG > 1985
Horizontal jet grouting
> 1987
Continuous bulb forepoling > 1993
Clique
para editarjet
o estilo
do subtítulo
mestre septum
360º
horizontal
grouting
– horizontal
– preventer
> 1998
2.6 – Current pratice in Brazil / Portugal / Venezuela
2.1 – Jet 1 – monofluid – CCP (Ø:0.7m) > 1980
2.2 –Jet 2 – bifluid (Ø:1.4m) >1987 - Campinas Tunnel
2.3 – Horizontal jet grouting – HJG (Ø:0.5m) >1987
(Novatecna&Rodio-Italy)
2.4 – Continuous bulb forepoling (Ø:0.2-0.3m) > 1993
manchette injected forepoling
continuos bulb forepoling
continuos bulb forepoling
2.5 - 360º horizontal jet grouting – horizontal septum –
preventer > 1998.
preventer
360º HJG and Septum
1998 - JGH em 360° e septo frontal com JGH /
Válvula Preventer (Túnel travessia sob o rio
Tamanduateí)
RETENTORES
BULBO
BARRA PERFO-EJETORA
VÁLVULA
“Preventer" ( controlando o fluxo da água e solo na
perfuração e do refluxo para evitar o “piping” durante a
execução da coluna
31/10/2013
16
Preventer – Equilíbrio das
pressões Induzida x água
31/10/2013
17
1 – Porque da válvula preventer? – fase de perfuração – controle do fluxo da água
de perfuração e do fluxo de água do terreno que se estabelece durante o avanço da
perfuração, que induz o "piping" em solo arenoso devido o alto valor do gradiente
hidráulico.
31/10/2013
18
2 - 1 – Porque da válvula preventer? – fase de execução da coluna –
controle do refluxo da pasta de solo cimento evitando a sua diluição e
lavagem devido ao fluxo de água do terreno que induz o "piping" durante a
execução da coluna.
31/10/2013
19
2.6 – Current practice : Brasil / Venezuela / Portugal
Typical treatment – notional section
2.6 – Current practice: Brazil / Venezuela
HJG sample
10
10
Horizontal jet grouting
9
8
Cement of high initial
resistance (ABNT)
7
6
6
5
4
4
200
210
200
190
180
170
150
160
150
140
100
110
90
100
80
70
60
50
40
30
20
0
0
50
1
130
2
2
120
ordinary cement
portland
3
10
Strenght (MPa)
8
Time (hour)
Strength x time x type of cement
2.6 – Current practice: Brasil / Venezuela / Portugal
Positioner used for HJG
2.6 – Current practice: Brasil / Venezuela / Portugal
Use of the positioner
2.6 – Current practice: Brazil - / Metro Copacabana
L1
L2
2 lines
heading
water table
residual sand
6m
sand
1 line
invert
360º HJG
SEPTO
L1
L2
pegmatitic
gneiss rock
HJG
septum
Breaktrough
point
12,0m
2,0m 4,40m
L1
L2
B A
2,0m
6,40m(6x0,80m)
AVANÇO TÍPICO
10,50m
Longitudinal section
Metro Copacabana – twin eyeglass section tunnel under direct
foundation of 7-storey building – coverage 6m
360º HJG – 2 lines headind/1 line invert/HJG septum
L1
L2
2.6 – Current practice: Brazil - / Metro Copacabana
360º HJG and Septum –
after execution / excavation
twin eyeglass section tunnel
2.6 – Current practice: Portugal
Jet 1 treating mud under 100 year-old rail station Cais do Sodré
Station Cais do Sodré
(EPB SHIELD - Ø: 10m)
(riverbed
of the
Tagus )
fill
EPB
10m
Tagus mud
Clique para editar Metro
o estilo
do subtítulo mestre
station Cais do Sodré
Miocene
Tagus mud
2.6 – Current practice: Portugal
pilot drift-2ª
metro station - Baixa Chiado
enlargement-3ª
benching-4ª
EPB:10m
1ª
2ª
3ª
benching-5ª
3ª
4ª
1ª
4ª
Clique para editar
5ª o estilo do subtítulo mestre
2ª
3ª
3ª
1ª
4ª
2.6 – Current practice: Brasil
tunnel crossing under Santo Amaro Av.-low coverage: 2.5 to 5.0m
2.6 – Current practice: Brasil
crossing under Dutra highway (São Paulo-Rio de Janeiro)
low coverage – 2.5 to 3.5m
Part 1 - Jet Grouting – Aspects of execution - case Histories
1. Historical evolution in Latin America
2. Developing the technology and on-site solutions
3. Metro station – Luz – São Paulo
3. Metro station – Luz - Brazil
clay
sand
Clique clay
para editar o estilo do subtítulo mestre
sand
sand
sand
Septum HJG in saturated sand
Treatment on arrival of EPB shield - Ø:9.5m
Part 1 - Jet Grouting – Aspects of execution
case histories
1.
2.
3.
Historical evolution in Latin America
Developing the technology and on-site solutions
Metro station – Luz - Brazil
4. Metro station – Independencia - Los
Teques - Venezuela
4. Metro station – Independencia - Los Teques Venezuela
CONTINUOUS BULB FOREPOLING
Water flow through limestone voids
– horizontal deep drains
Jet grouting in tunneling
Aspects of execution - case histories
Portugal and Spain
Part 2
5.
6.
7.
Metro Station - Faria Guimarães, Portugal
Metro Station - S. Sebastião, Portugal
Railway
Tunnel
Sants,
Spain
Clique para
editar -o Torrassa
estilo do subtítulo
mestre
7 - High Speed Railway Madrid-Barcelona
Tunnel Torrassa-Sants
Project description
Owner - ADIF
Name of Project: L.A.V. - Torrassa / Sants
General Contractor:
UTE Torrassa (Sacyr / Scrinser / Cavosa)
Special works:
Horizontal Jet Grouting columns 37,190 m
Jet Grouting Sub-vertical: 16,910 m
Start of Project: January 2007
Duration: 12 Months
31/10/2013
Deployment of the tunnel
This project is part of the
construction of the high speed
raiway line linking Madrid and
Barcelona, more specifically the
terminal between Torrassa and
Barcelona Sants railway station.
Due to intense occupation surface
was planned to build a tunnel with
2.000m long and 120m2 section
excavated.
The tunnel is developed under the
railway lines (lines of neighborhood
Renfe) and line 1 of Barcelona
subway.
31/10/2013
Geology
31/10/2013
External accesses
The work was carried out with 5
attack accesses, 2 inside the tunnel,
2 attack shafts and a lateral ramp :
1- Shaft access at PK 1 +060
2- Ramp access PK 1 +260
3- Shaft access PK 1 +350
Shafts were performed using
reinforced concrete piles with a
bottom slab waterproofed by jetgrouting.
The ramp was performed using
reinforced concrete piles spaced
with jet-grouting columns and a
bottom slab also in jet-grouting.
31/10/2013
External accesses
3 - Shaft at PK 1+530
2 - Ramp at PK 1+260
1 - Shaft at PK 1+060
31/10/2013
Design type for tunnel normal section
A
COLUNAS JGH
COLUNAS JGH
SEPTO
FRONTAL
COLUNAS JGV
A
HJG Treatment with 360º, half section and invert with V JG
Drilling: 14,00 m
Jet grouting 360° periphery: 12,00 m
Jet grouting in the face: 2,00 m
Excavation: 8,00 m
31/10/2013
Feasibility of a 360º Horizontal Jet Grouting
and Frontal Septum – Trial in situ Test
FRONTAL SEPTUM
Ø 80cm
3,00
HORIZONTAL
JET GROUTING
Ø 50cm
8,20
8,50
12,00
VERTICAL
JET GROUTING
Ø 180cm
WALL AREA
REMOVED FOR JGH
DIAPHRAGM WALL
Typical treatment scheme - plant
Plan View of Access Shaft
GROUND LEVEL
HORIZONTAL JET GROUTING
+3,00
+2,00
3,20
Ø 50cm
N.A.
-9,00
8,20
3,00
FRONTAL SEPTUM
3,00
Ø 80cm
18,00
-16,00
-20,00
8,50
12,00
Longitudinal section
VERTICAL JET GROUTING
Ø 180cm
Typical treatment scheme - section
31/10/2013
Trial tunnel test
Simplified geotechnical profile
Soil samples from 13.2 to 16.5 m
Positioner carrying out HJG at the invert
31/10/2013
Trial tunnel excavation
Trial tunnel Test - Instrumentation and monitoring
HN10
HN20
EV10
EV20
PZ-50
PZ-100
PZ-60
PZ-110
HN10
PZ-50
PZ-60
HN90
HN30
PZ-80
PZ-70
PZ-120
PZ-90
HN20
HN40
HN60
EV30
HN70
PZ-100
PZ-80
PZ-130
PZ-130 PZ-120 PZ-110
EV40 EV30 EV20
EV10
HN50 HN40 HN30
PZ-70
HN50
PZ-90
PZ-140
HN100
PZ-140
EV40
HN60
HN70
PZ-150
HN80
PZ-150
DRAINS
0
SAND
-2
-4
PZ-90
-6
16-01-07
09-01-07
02-01-07
26-12-06
19-12-06
12-12-06
05-12-06
28-11-06
21-11-06
14-11-06
07-11-06
31-10-06
Time (week)
24-10-06
-10
17-10-06
-8
14-01-07
07-01-07
31-12-06
24-12-06
17-12-06
10-12-06
03-12-06
26-11-06
19-11-06
12-11-06
05-11-06
29-10-06
22-10-06
15-10-06
08-10-06
01-10-06
24-09-06
17-09-06
10-09-06
SILT
03-09-06
4
2
N. A. (m)
LANDFILL
10-10-06
HN-40
PZ-70
PZ-20
PZ-60
PZ-10
HN-50
HN-60
HN-70
PZ-100
PZ-50
PZ-90
PZ-40
HN-10
HN-20
HN-30
27-08-06
20-08-06
Vertical Displacement (mm)
50
40
30
20
10
0,0
-10
-20
-30
-40
PZ-80
PZ-30
Instrumentation – Section View
Instrumentation – Plan view
Time (week)
Superficial marks - HN 40 highlighted
31/10/2013
Piezometric readings
The use of the Preventer to control refluxing
31/10/2013
Shaft at PK 1+060 – Connection Gallery
31/10/2013
Connection gallery at PK 1+260
31/10/2013
Connection with the tunnel at PK 1+260
31/10/2013
Jet Grouting treatment from the surface
31/10/2013
BIBLIOGRAPHY
•
•
•
•
•
•
•
Guatteri, G.; Koshima, A.; Lopes, J.; Ravaglia A.; Pieroni, R.M – “Summary of the Brazilian experience
on ground improvement with jet grouting for soft ground tunneling”. ITA World Tunnel Congress.
Geneva 2013.
Machado do Vale, J.L. – “Prolongamento da Linha Vermelha do Metro de Lisboa entre a Estação
Alameda II e a Estação S. Sebastião II”. Spectial lecture in Jornadas Hispano-Lusas de Geotecnia.
Madrid 2009.
Guatteri, G.; Koshima, A.; Lopes, J.; Ravaglia A.; Pieroni, R.M.; Rocha, P.; and Castanheira, M. – “Test
Tunnel in Barcelona (Spain) for the Feasibility of a 360° Horizontal Jet Grouting and Frontal
Septum”. ITA World Tunnel Congress. Budapest 2009.
Guatteri, G.; Koshima, A.; Lopes J. R.; Pieroni, M.R. - Historical Cases and Use of Horizontal Jet
Grouting Solutions with 360° Distribution and Frontal Septum to Consolidate Very Weak and
Saturated Soils.- 6th International Symposium on Geotechnical Aspects Undergoround
Constrtuction - IS – Shangai, China, 2008.
Cruz, J.M.; Cebola, D.; Falcão, J. – “Execución de Jet Grouting en la Estación de Faria Guimarães del
Metro de Porto” Congreso AETOS, Madrid, Spain, 2007.
Pinto da Cunha, A., Machado do Vale, J. L., “The Oporto Subway – an Overview of the Underground
Constrution”. International Seminar on Tunnels and Underground Works, Lisbon, Portugal, 2006.
Guatteri, G.; Koshima, A.; Lopes, J.; Doro Altan, V. - “360º Jet Grouted Conical Chamber Allow Safe
Tunneling Under River Within a Highly Pervious Environment”. Geoenge 2000 - An International
Conference on Geotechnical & Geological Engineering; Melbourne, Australia, 2000.
31/10/2013
•Contato:
[email protected]
•Tel. (+5511) - 38138700
OBRIGADO PELA ATENÇÃO! AKIRA KOSHIMA
31/10/2013
59

Ênfase em Jet Grouting

Transcrição

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