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Chaplin Grout Plant and Headwall Construction

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Information about Chaplin Grout Plant and Headwall Construction
Education

Published on March 4, 2014

Author: CrosstownTO

Source: slideshare.net

Description

Chaplin Grout Plant and Headwall Construction
Spring 2014
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Chaplin Grout Plant and Headwall Construction Spring 2014 Councillor Stintz Briefing February 3, 2014 Jamie Robinson Director, Communications and Community Relations Toronto Expansion Projects, Metrolinx 1

Eglinton Crosstown LRT  Project  $4.9 B (2010$), funded by the Province of Ontario  19 kilometres east-west LRT from Kennedy to Jane/Black Creek, including 10 kilometers of tunnel  Connections to Yonge-University-Spadina Subway, Scarborough RT and GO Stouffville  Up to 26 stations 2

Tunnelling Works 2014 3

Tunnelling Update  TBM 1 is well underway with tunnelling; just recently bored through our west headwall at Keele St.  TBM 2, a twin machine, has been assembled and is following closely behind 4

Tunnel Drive Sequence 1. Construct Tunnel Launch Shaft 5 2. Construct Extraction Shaft

Tunnel Drive Sequence Commence Mining Twin Tunnels Install Jet Grout Block “Headwalls” from Surface 6

Tunnel Drive Sequence Mine-Through Jet Grout Blocks 7

Tunnel Drive Sequence After Tunnel Contract: • Install Station Sidewall and Headwall Support of Excavation • Excavate Station and Commence Removing Concrete Tunnel Liners Finally: • Station Box Fully Excavated & Tunnel Lining Removed (Not shown) 8

Launch Shaft Tunnel Boring Machine 9

Tunnel Drive Works 2013 10

Tunnel Drive Works Current Status  In 2013 the majority of tunnel works took place between Black Creek Drive and the vicinity of Allen Road  In 2014 work continues east of Allen Road  Crews are starting the construction of headwalls and utility relocation at future station sites along Eglinton Avenue West 11

Tunnel Drive Works  Headwalls: Temporary support walls for future excavation of the LRT stations.  Made of concrete and installed to the depth of the future track level  Two methods of installation used: Secant Pile Walls, Jet Grout  Machinery including drill rigs, grout tanks, diggers and other equipment 12

Tunnel Drive Works Secant pile wall : formed by intersecting concrete piles 13 Jet grout wall : uses engineered grout to form wall in situ

Jet Grout Headwalls 14

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Grout Plant for Headwall Construction Why a grout plant at Chaplin?  Headwalls for Chaplin required  Gilgorm adjacent to work site  Gilgorm to remain open one lane northbound  Allows efficient use of space  Other options examined included Vesta Drive and Eglinton  Gilgorm preferred because of: reduced property impact reduced footprint on Eglinton Ave. 16

Grout Plant at Chaplin  The site will be situated on Metrolinxowned property and occupy City of Toronto roadway  A fence will enclose the site to demarcate the site from the public roadway throughout the entire works  The plant will service headwall construction for Chaplin Station and cross-passages at Vesta Dr and Castle Knock Road  The site is expected to be in place for approximately 8-10 months 17

Grout Plant at Chaplin Advantages of jet grout technique for headwall installation: Reduce requirement for extensive utility relocation Overall construction time savings 18

Timeline With appropriate permissions in place Metrolinx’ contractor will:  Begin to set up the grout plant  Install fencing and secure the perimeter  Install grout lines in the roadway  Test works  Begin Chaplin headwall construction works  Chaplin headwall construction is currently scheduled to commence in March 2014  8-10 months anticipated  Headwall works at Avenue Road and Bathurst are currently being reviewed 19

Chaplin Work Staging- South Setup  Work is set up on the south side of Eglinton  The work zone is separated from the ROW with concrete barriers and fencing  Unoccupied traffic lanes remain open on the north side of Eglinton with one lane in each direction  Through-traffic southbound on Chaplin at Eglinton will not be permitted  Southbound traffic must exit at Eglinton or choose an alternate route  Expected duration: Approximately 4 months 20

Chaplin Work Staging- North Setup  A work site is set up on the north side of Eglinton  The work zone is separated from the ROW with concrete barriers and fencing  Unoccupied traffic lanes remain open on the south side of Eglinton with one lane in each direction  Through-traffic northbound on Chaplin at Eglinton will not be permitted  Northbound traffic must exit at Eglinton or choose an alternate route  Expected duration: Approximately 4 months  Latimer Avenue is closed to/from Eglinton during this phase 21

Chaplin Station Plan View 22

Chaplin Station Preliminary Station Concept Looking West 23

Chaplin Station Entrance Locations Primary Entrance Secondary Entrance Secondary Entrance 24

Next Steps  Community Relations will outreach to specific condos and apartment buildings to raise awareness of the site and planned works  Co-ordination with TTC will continue to ensure continued bus service  Co-ordination with local Fire Station also continues to ensure service levels 25

www.metrolinx.com Thank you 26

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