Seismic concrete Bore Piles at Makhinjauri water supply reservoir

CONSTRUCTION OF SEISMIC CONCRETE BORE
PILES
AT MAKHINJAURI WATER SUPPLY RESERVOIR
A PART OF REHABILITATION OF MUNICIPAL WATER SUPPLY &
WASTEWATER INFRASTRUCTURE IN BATUMI, ADJARA, REPUBLIC OF
GEORGIA
PHASE III (LOT 1, 3, 5)
(OCT. 2015 - NOV. 2018)
Makhinjauri Reservoir Seismic Bore Piling / Rehabilitation of Municipal Water Supply & Wastewater Infrastructure in Batumi (Oct.
2015 / Nov.2018)
1

PROJECT OVERVIEW:
BAT III
LOT 1, 3, 5
• WS COMPONENTS:
• WS NETWORK P2E
• WS NETWORK ZONE 1
• WS MEJINISTSKALI WELLFIELD &
TRANSMISSION MAIN
• WS RESERVOIR MAKHINJAURI
• WW COMPONENTS:
• WW NETWORK BNZ
• WW NETWORK BARTSKANA
• WW NETWORK UPPER GORODOK
• WW NETWORK GONIO
• WW PS D1 & PRESSURE MAIN D1
• WW PS D2 & PRESSURE MAIN D2
• KFW, EC, LOCAL BUDGET FINANCED, BASED ON
FIDIC CONDITIONS OF CONTRACT (FIDIC RED
BOOK, ED.1999). TOTAL WORTH OF PROJECT ~
EUR € 15M
Makhinjauri Reservoir Seismic Bore Piling / Rehabilitation of Municipal Water Supply & Wastewater
Infrastructure in Batumi (Oct. 2015 / Nov.2018)
2

REHABILITATI
ON OF
MUNICIPAL
WATER
SUPPLY &
WASTEWATER
INFRASTRUCT
URE IN
BATUMI,
REPUBLIC OF
GEORGIA
PHASE III (LOT
1, 3, 5)
(OCT. 2015 -
NOV. 2018)
PROJECT OVERVIEW:
• WATER-SUPPLY COMPONENT: 78KM OF WELLFIELD PIPING, TRANSMISSION
MAINS, NETWORKS DN90 TO DN800 (STEEL, HDPE), 1,900NR HOUSE
CONNECTIONS, RC RESERVOIR (Q=1,800M3, OUTFLOW 126L/S,
10,900M3/DAY) WITH ASSOCIATED OPERATION BUILDING FOR NAOCL BASED
TREATMENT / DISINFECTION WITH DESIGNED 1MG/L DOSING
CONCENTRATION AND MIN. PRODUCTION OF 6,75L/H, STAND-BY DIESEL-
ELECTRIC GENERATOR (380V, 9.2KW) AND ASSOCIATED VALVE CHAMBER &
INLET / OUTLET PIPES AND VALVES. CITY NETWORK IN 61,500M OF PIPELINES,
1,470NR HOUSE CONNECTIONS (HDPE 100, PN10, DN32-400MM; STEEL PE
COATED / EPOXY LINED PIPELINES DN500MM), ~900M OF TRANSMISSION
MAINS (STEEL PE/EPOXY, DN600, 800MM), RECONSTRUCTION OF 3NR
WELLFIELD BORE-HOLES WITH ASSOCIATED WELL-PUMPS (Q=126M3/H @
50.4M, 30KW, 400V), ASSOCIATED PIPING WORKS (STEEL EPOXY/EPOXY,
PE/EPOXY, DN150MM), UL.SONIC FLOW METERS, AIR & GATE VALVES.
BORDERING OF DISTRICT METERED AREA (DMA) WITH 4NR EL.MAG. FLOW
METERS.
• WASTEWATER COMPONENT: IN TOTAL 19,6KM OF SEWERAGE PIPELINES,
450NR INSPECTION MANHOLES, 882NR HOUSE CONNECTION MANHOLES.
16,850M OF GRAVITY SEWER COLLECTORS (PP SN10 DN200-300MM, GRP
PN10, SN10000 DN500, 800MM), 2,800M OF PRESSURE MAINS (STEEL PE
COATED / CEM.MORTAR LINED, DN300, 400MM) WITH ASSOCIATED
COMBINED TYPE AIR VALVES, VALVES & WASHOUTS, 2NR RC PUMPING
STATIONS (Q1 = 3X360M3/H @ 12.58M, 50HZ, 400V; Q2 = 3X252M3/H @
9.83M, 50HZ, 400V), WITH INTEGRATED BAR SCREENS, EL.MAG. FLOW METERS,
UL.SONIC WATER LEVEL SENSORS, SLUICE GATE VALVES, PROVISION OF
ASSOCIATED TRANSFORMERS 160KWA, 0.4/10KW, EMERGENCY ELECTRO-
GENERATORS 80&100KVA, AUTOMATIC CONTROL SYSTEMS.Makhinjauri Reservoir Seismic Bore Piling /
Rehabilitation of Municipal Water Supply & Wastewater Infrastructure in Batumi (Oct. 2015 / Nov.2018)
3

REHABILITATION OF MUNICIPAL WATER SUPPLY &
WASTEWATER INFRASTRUCTURE IN BATUMI,
REPUBLIC OF GEORGIA
PHASE III (LOT 1, 3, 5)
• UNDER “BAT III” PROJECT’S WATER SUPPLY COMPONENT, NEW RC RESERVOIR
(Q=1,800M3, 126L/S, 10,900M3/DAY), AT “MAKHINJAURI” AREA LOCATION WAS
FORESEEN
• ASSOCIATED OPERATION BUILDING FOR NAOCL BASED TREATMENT /
DISINFECTION
• CONCRETE CHANNEL/TUNNEL FOR ACCOMMODATION OF INLET, OUTLET,
WASHOUT & OVERFLOW PIPELINES
Makhinjauri Reservoir Seismic Bore Piling /
4

5

SECTIONS I-I, II-II
• MAKHINJAURI WATER SUPPLYING RC
RESERVOIR (Q=1,800M3), HAS BEEN SET
ON THE STEEP HILL-SIDE WITH 2-
DIRECTIONAL SLOPE GRADIENT OF 18-
20%, ON ELEVATION OF 58M ABOVE
SEA LEVEL.
• GEOTECHNICAL REPORT INDICATE
THAT NO LAND-SLIDING HAZARD EXISTS
• SEISMIC HAZARD – 7 POINTS,
FOUNDATION SOIL – II CATEGORY
• POSITION OF THE RESERVOIR &
SEISMICITY OF MICRO-LOCATION HAVE
SPECIFIED THE REQUIREMENT FOR BORE
PILES IN ACCORDANCE WITH GEORGIAN
NORMS & REGULATIONS (PN 01.01-09
“SEISMICITY OF CONSTRUCTION”
6

SECTIONS
III-III, IV-IV
• DESIGN CONSIDERED
TOTAL NUMBER OF 112NR
PILES:
• 60NR BELLOW RESERVOIR
• 8NR BELLOW VALVE
CHAMBER;
• 12NR BELOW THE
OPERATION BUILDING
• 32NR BELOW THE
CONCRETE PIPE-TUNNEL
• PILES’ DIMENSION: 10,5M X
0.60M
7

BORE HOLE DRILLING SEQUENCE METHOD
8

1 - BORE HOLES SETTING-OUT
9

SETTING-OUT MARKERS ON RESERVOIR’S PLATEAU AREA
10

2 - BORE
HOLES
DRILLING
11
• MAICAT180 – DRILLING
RIG WITH CATERPILLAR
325C BASE

12

13

3 -
ENCASEMENT
PIPE
INSERTION
• TEMPORARY, PARTIAL
ENCASEMENT STEEL PIPES
(L=3,0M), PREVENTING
BORE HOLE TOP FROM
COLLAPSING
14

15

16

17

4 - DRILLING
COMPLETION
18

19

5 -
VERIFICATION
OF BORE HOLE
• VERIFICATION OF FINAL
DRILLING DEPTH,
VERTICALITY OF THE BORE
HOLE
20

21

22

23

6 - INSERTION
OF
REINFORCEME
NT
24

Rehabilitation of Municipal Water Supply & Wastewater Infrastructure in Batumi (Oct. 2015 /
Nov.2018)
25
• HYDRAULIC CRAWLER
CRANE – HITACHI KH150

BORE PILE’S
REINFORCEMEN
T “HELICAL”
CAGES
26

27

28

29

30

7 - RE-BAR
CAGE
POSITIONING
31

32

33

34

8 - TREMIE
PIPE
INSTALLATIO
N
35

36

37

38

9 -
CONCRETE
INSPECTION
• DUE TO PRESENCE OF THE
UNDERGROUND WATER ON
7-9M’ DEPTH, ORIGINAL
CEMENT CONTENT
(C20/25), WAS INCREASED
FOR 10% IN ACCORDANCE
WITH EN1536 / 6.3.1.5.
39

CONCRETE PRE-INSTALLATION INSPECTION – “SLUMP-TEST”,
CONCRETE TEMPERATURE (<32C).
40

BORE PILE’S
INSPECTION
CHECKLIST
• 1 – SETTING OUT INSPECTION;
• 2 - VERTICALITY CONTROL;
• 3 – PILE’S DIMENSIONS;
• 4 – EXCAVATED SOIL
VERIFICATION;
• 5 - FINAL DRILLING DEPTH
VERIFICATION;
• 6 – REINFORCEMENT
INSPECTION;
• 7 – CONCRETE INSPECTION;
• * - APPROVAL FOR CONCRETE
INSTALLATIONMakhinjauri Reservoir Seismic Bore Piling /
Rehabilitation of Municipal Water Supply & Wastewater Infrastructure in Batumi (Oct.
2015 / Nov.2018)
41

SAMPLING OF CONCRETE - CONCRETE STANDARD TESTING
MOLDS 6PCS(15X15X15CM), FOR 7 & 28-DAY COMPRESSIVE
STRENGTH TESTING
42

10 -
CONCRETE
INSTALLATIO
N
43

PILE CONCRETE INJECTING OVER “TREMIE-PIPE”
44

PILE’S ENCASEMENT PIPES FILLED WITH CONCRETE PRIOR OF
EXTRACTION
45

11 - EXTRACTION OF CASING PIPES
REQUIRED 10CM TOP PROVIDED BY ADDITIONAL RING
46

RESERVOIR PLATEAU AREA
47

48

12 - FINAL PILES
PILES/COLUMNS COMBINATION BELOW THE OPERATION
BUILDING
49

OPERATION BUILDING PILES
Makhinjauri Reservoir Seismic Bore Piling / Rehabilitation of Municipal Water Supply & Wastewater
Infrastructure in Batumi (Oct. 2015 / Nov.2018)
50

RESERVOIR PAN’S PILES
51

CONCRETE TUNNEL’S PILES (TUNNEL ACCOMMODATING INLET,
OUTLET, WASHOUT & OVERFLOW PIPELINES)
52

13 - SOIL
COMPACTION
TEST
53

SOIL COMPACTION TESTING
54

14 -
BLINDING
CONCRETE
55

RESERVOIR PLATEAU AREA BLINDING CONCRETE
56

RESERVOIR PLATEAU AREA
57

14 - BASE SLAB
DESIGN REFERS TO WELDING
CONNECTION BETWEEN PILE’S
VERTICAL BARS AND “L” BARS FOR
CONNECTION WITH BASE SLABS
58

PIPELINES CONCRETE TUNNEL – CONNECTION BTW PILES & BASE
SLAB
59

PIPELINES CONCRETE TUNNEL – CONNECTION BTW PILES & BASE
SLAB
60

61

62

63

64

Seismic concrete Bore Piles at Makhinjauri water supply reservoir

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Seismic concrete Bore Piles at Makhinjauri water supply reservoir