KEBUTUHAN MATERIAL – PERALATAN KONSTRUKSI SPESIFIK DALAM

PROYEK MASS RAPID TRANSIT JAKARTA

Ir. Rachmadi, MSc.

Technical & Project Director

PT. MASS RAPID TRANSIT JAKARTA

MAY 2012

Feature of Jakarta MRT Project

North-South Corridor

Track Length 23.3 Km

East-West Corridor

Track Length: 87 Km

Phase I

Lebak Bulus –

Bundaran HI

Phase II

Bundaran HI – Kampung

Bandan

Pre – Feasibility Study

Track Length 15.7 Km (9.8 Km elevated,

5.9 Km underground)

8.1 Km

(all underground)

Station Number 13 (7 elevated,

6 underground)

+7 underground station

from Bundaran HI – Kota,

+1 at grade at Kampung

Bandan

Time 30 minutes 22.5 minutes (Lebak Bulus

– Kampung Bandan: 52.5

minutes)

Length between Station 0.6 – 2.0 km 0.8 – 2.0 km

Headway 5 minutes (2016) 5 minutes (2018)

Target of Passenger/Day 412.000 (2020/third year

operation)

With Traffic Demand

Management (TDM) and

Transit Oriented

Development (TOD)

630.000 (2037)

With Traffic Demand

Management (TDM) and

Transit Oriented

Development (TOD)

Target of Operation End of 2016 2018 2024 - 2027

Jakarta MRT Networks and Future Development

Op

erat

ion

al &

M

ain

ten

ance

Testing & Commissioning

ConstructionTenderBasic DesignInstitutional Set-UpBudget ArrangementFS

Jakarta MRT Phase IElevated Station Underground Station

• Senayan• Istora• Bendungan Hilir• Setiabudi• Dukuh Atas• Bundaran HI

8 PAKET UTAMA: CIVIL WORKS 6 PAKET (FIDIC YELLOW BOOK)

SYSTEM & M/E 1 PAKET (FIDIC SILVER BOOK)ROLLING STOCK 1 PAKET (FIDIC SILVER BOOK)

*) FIDIC (International Federation of Consulting Engineers)

PRA-FS

15 – 20 years

NOW

FEATURE MRT JAKARTA

Image of Elevated Station

Image of Underground Station

FAKTOR KEAMANAN (SAFETY) DALAM DESAIN

1) Land Subsidence

2) Gempa; Proyek MRT Jakarta akan memperhitungkan beban

gempa sesuai dengan peta gempa Indonesia terbaru

3) Pencegahan Terhadap Banjir

a) Mound – Up Entrance

b) Flood Protection Panel

c) Flood Protection Door

4) Antisipasi Terhadap Kebakaran

a) Menggunakan material yang tidak mudah terbakar

(Non-combustible Material)

b) Fasilitas Emergency di stasiun bawah tanah dan

terowongan (alarm kebakaran otomatis, CCTV, sistem

komunikasi di dalam terowongan, lampu emergency,

fasilitas pembuangan asap, fire extinguishier, hydrant,

sprinkler, koneksi pipa air di dalam terowongan, akses

petugas pemadam kebakaran)

5) Listrik Padam

JEMBATAN DI ATAS TOLL JORR

GEOLOGICAL CONDITION

Geological Condition

The upper at south of Jakarta where at almost the entire route of the

railway line is comprising Tuff Alluvium Deposits and a small part at

recent River Alluvium Deposits.

The subsoil at the site generally consists of two main formations as

below:

a) Stratum 1:

Highly plastic volcanic silty clay, ranging from soft to very stiff

consistency the thickness of this layer range from 5 to 20 m, and has a

soft to very stiff consistency with Nspt = 2-19

b) Stratum 2:

This stratum of alluvial deposits can be divided into two sub layers,

namely the hard to very hard silt layer and occasionally is inserted by a

very dense sand layer. This stratum has a consistency ranging from

loose to very dense consistency from Nspt = 20 to more than 60

Bunderan HI

Station

Senayan Station Istra Station

Bendungan Hilir

Station Setiabudi StationDukuh Atas Station

Geological Condition – Underground Section

Alluvium (Cohesive Soil) Alluvium (Sandy Soil) Dilluvium (Cohesive Soil) Dilluvium (Sandy Soil)

TUNNEL DESIGN

Tunnel Diameter

The Factors of Decision for Tunnel Diameter

• Construction Gauge

• Track Structure

• Outside Clearance of Construction Gauge

• Space for Catenary Facility

• Curve Section (Cant and Extension of Construction Gage

width)

• Construction Allowance

Outside Clearance of Construction Gauge

Upper Side

- Outside Clearance of Construction Gauge

100mm

- Space for Catenary Facility

300mm

Upper Limit : 300+100=400mm

Lower Side

-Minimum distance from sleeper edge to

lining

200mm

Lower Limit : 200mm

Lower Limit

Upper Limit

5750mm

Tunnel Type

Narrow RoadWide Road

Hits the Foundation

Narrow Road

In STDT case In STDT is difficult case DTST is chosen

Jakarta MRT : Single Track Double Tube (STDT)The reason is below:

If the above road width is wide they used STDT. However, the tunnel hits the building foundation if the

above road is narrow. That time, the protection of buildings is very expensive. So they chose DTST in that

case.

Underground Tunnel Section

Tunneling Method

NATM or TBM?

NATM method is more widely used when the geological conditions are

rocky and the surrounding rock or soil formations of a tunnel are integrated

into an overall ring-like support structure. Thus the supporting formations

will themselves be part of this supporting structure

Considering geological condition to be faced at this first stage of

construction of the MRT was not rocks, but more soil, the use of TBM is

considered more suitable than the NATM.

No Criteria Slurry –Supported Shield

EPB - Shield

1 Max settlement control + -

2 Boulders + -

3 Mixed face + -

4 Voids, possibly with water + -

5 Wear + -

6 Tool change / maintenance + -

7 Very fine grain - +

8 Very coarse grain + -

9 High groundwater + -

10 Natural gas + -

11 Contaminated soil +- +-

12 Depositing of soil - +

13 Investment cost - +

TBM Type, EPB or Slurry?

ItemEarth pressure balanced

（EPB) shield

Slurry pressure balanced

（SPB) shield

Applicability to

soil

・Silty sand ○ ○

・Sandy silt ○ ○

・Sand ○ ○

Applicability to small

overburden○ △

Applicability to high-ground

water pressure○ ◎

Applicability to boulder ○ △

Applicability to chip ○ ○

Removal of obstacle ○ ○

Launching shaft base and

soundproofing equipment○ △

Profit

ability

・Silty sand ○ ○

・Sandy silt ○ ○

・Sand ○ ○

・Cost ○(Low) △(High)

Evaluation ◎ ○

Overall evaluation

JAKARTA MRT EPB (Earth Pressure Balance), reason is:

①As for the earth pressure balanced shield, the technology is good, and costs are lower than the slurry shield.

③When the type of soil that the tunnel passes is an entire clayey soil, the earth pressure balanced shield is obviously

suitable and cost is low.

TBM TYPE, CONSIDERATION FOR JAKARTA MRT

Image of EBP Type TBM

SEGMENT LINING DESIGN

Segment Design

6 nos. Division

3 x A Segment

2 x B Segment

1 x K Segment *1

Note :

• Outer Diameter : 6650 mm

• Inner Diameter : 6050 mm

• Lining Thickness : 300 mm

6

Ring2

Ring1Th

ick

nes

s

Segment

Ring Joint

Segment Joint

6 nos. Division

3 x A Segment

2 x B Segment

1 x K Segment *1

Segment Joint

Ring Joint

IMAGE FIGURE OF SEGMENT

Note : K Segment have taper and it is installed in the last of the ring.

SegmentType

RC Concrete

Segment Width

1200 mm

Segment Thickness

300 mm

SegmentNumber of Division

6 nos.

Joint Type Curve Bolt Type

GROUTING FOR TUNNELS

GROUND TREATMENT

Contact Grout

Contact grouting is defined as the injection of grout behind cast-in-place concrete

lining (shaft and/or tunnel), or grouting behind the initial support system, to achieve

continuous contact between the lining and the surrounding rock or soil.

Perform contact grouting as to

ensure that all voids between the

lining and soil are filled with

grout

No pressure washing or testing is

required prior to injecting grout

Cast-in-place concrete final lining

shall have been in place at least

7 days before grouting

commences

UNDERGROUND STATION DESIGN

Structure Details

Jakarta MRT has 6 underground structures:1. Senayan Station2. Istora Station3. Bendungan Hilir Station4. Setiabudi Station5. Dukuh Atas Station6. Bunderan HI Station

General Criteria

No General Criteria Choices

1 Selection of underground station type for basic design and design scope

1. Bendungan Hilir (2 stories structures)2. Dukuh Atas (3 stories structures)

2 Codes and standard 1. Indonesian Railway Technical Standard for Design (Concrete Bridge Structures, Foundation Structure, C&C Tunnel)

2. Design Standard for Railway Structures with Commentary (Concrete Structure October 2001, Foundation Structure June 2002, C&C Tunnel March 2003)

3 Design condition and status

Design maximum speed 80 km/h

Track structure Elastic sleeper track

Number of tracks Two tracks

Clearance Min. 400 mm from the center track to near face wall

Typical Cross Section5700

1100

6500

200

G.L

OVERBURDEN

R.L

VARIOUS

3360

6500

2276

0

R.L -18.1(m)

G.L 4.66(m)

5700

5700

1100

200

200

D-wall thickness = 1.0m

Image of Underground Station

Typical concourse design

Construction Sequence

Step Construction Sequence Comment

1 Diversion of Existing Utilities Removal and relocation of utilities

2 Construction of Retaining Walls Construction of retaining wall to protect the soil

3Installation of King Post

Install king posts to provide support and hanging road over deck

4 Installation of Road over Deck To allow passage of vehicles and pedestrians

5Excavation & Support & Top Slab While excavating, temporary strut will be installed and top

slab will constructed

6 Installation of structure Installation of permanent structure

7Backfill & Removal of Decks

Carried out backfill and remove temporary road-over decking

8 Restore to Original Restore original layout plan and good landscape

1

2

3

4

5

6

7

8

Traffic Management (During Construction)Traffic management during construction

Station box location

Construction site

Private area

Pedestrian path

Slow speed lane

Green Lane

Fast speed lane

Transjakarta (busway) lane

Street median

PARTISIPASI KONTRAKTOR LOKAL DALAM PROYEK MRT JAKARTA

Pendanaan proyek sebesar kurang

lebih 83% berasal dari pinjaman JICA

(JBIC)

Persyaratan pada pinjaman STEP Loan

(Special Terms of Economic

Partnership) bunga rendah

0.2%/tahun dengan grace period 10

tahun dan payback 40 tahun sehingga:

General Main Contractor harus

berasal dari Jepang

Minimum 30% dari eligible costs

adalah Japanese Product

Untuk pekerjaan konstruksi sipil,

penggunaan Japanese content

secara umum kurang dari 30%

Kontraktor Dalam Negeri untuk

Pekerjaan Sipil berpartisipasi dalam

bentuk JV

Kontraktor Dalam Negeri untuk

Pekerjaan System berpartisipasi

dalam bentuk JV

Kontraktor Dalam Negeri untuk

Pekerjaan Rolling Stock

berpartisipasi dalam bentuk

Declaration Letter untuk memakai

bagian tertentu produksi Dalam Negeri

PENDANAANPARTISIPASI LOKAL

Thank you !