Designing tunnels in Sydney for earthquakes

B.E.  Estrada; A. de Ambrosis; R. Bertuzzi

Designing tunnels in Sydney for earthquakes

B.E. Estrada , A. de Ambrosis, R. Bertuzzi

Research output: Chapter in Book/Conference paper › Conference paper › peer-review

Abstract

Assessment of tunnel support performance under seismic conditions in the Sydney region has continued to develop and improve. The ground motion characteristics of design earthquakes are used to estimate tunnel deformation with closed form elastic solutions and numerical analysis. This paper describes the selection of the design earthquakes, ground motion characteristics and the applied methodology.

This paper also proposes a new approach based on Austroads' Guide to Road Tunnels. The new approach comprises a three-level design criterion. Each level assesses the tunnel response against a different return period earthquake. The first level assesses the tunnel for continuous operation with only minor damage allowed and no disruption to traffic. The second level targets tunnel operation for emergency traffic only, with some damage needing repair allowed. The third level is targeted at life safety and prevention of tunnel collapse.

Original language	English
Title of host publication	16th Australasian Tunnelling Conference 2017: Challenging Underground Space : Bigger, Better, More
Place of Publication	Australia
Publisher	Engineers Australia
Number of pages	7
ISBN (Print)	9781922107985
Publication status	Published - 23 Nov 2017
Externally published	Yes
Event	16th Australasian Tunnelling Conference 2017 - Star City Sydney, Sydney, Australia Duration: 30 Oct 2017 → 1 Nov 2017 Conference number: 16

Conference

Conference	16th Australasian Tunnelling Conference 2017
Abbreviated title	ATS2017
Country/Territory	Australia
City	Sydney
Period	30/10/17 → 1/11/17

Cite this

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title = "Designing tunnels in Sydney for earthquakes",

abstract = "Assessment of tunnel support performance under seismic conditions in the Sydney region has continued to develop and improve. The ground motion characteristics of design earthquakes are used to estimate tunnel deformation with closed form elastic solutions and numerical analysis. This paper describes the selection of the design earthquakes, ground motion characteristics and the applied methodology.This paper also proposes a new approach based on Austroads' Guide to Road Tunnels. The new approach comprises a three-level design criterion. Each level assesses the tunnel response against a different return period earthquake. The first level assesses the tunnel for continuous operation with only minor damage allowed and no disruption to traffic. The second level targets tunnel operation for emergency traffic only, with some damage needing repair allowed. The third level is targeted at life safety and prevention of tunnel collapse.",

author = "B.E. Estrada and {de Ambrosis}, A. and R. Bertuzzi",

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T1 - Designing tunnels in Sydney for earthquakes

AU - Estrada , B.E.

AU - de Ambrosis, A.

AU - Bertuzzi, R.

N1 - Conference code: 16

PY - 2017/11/23

Y1 - 2017/11/23

N2 - Assessment of tunnel support performance under seismic conditions in the Sydney region has continued to develop and improve. The ground motion characteristics of design earthquakes are used to estimate tunnel deformation with closed form elastic solutions and numerical analysis. This paper describes the selection of the design earthquakes, ground motion characteristics and the applied methodology.This paper also proposes a new approach based on Austroads' Guide to Road Tunnels. The new approach comprises a three-level design criterion. Each level assesses the tunnel response against a different return period earthquake. The first level assesses the tunnel for continuous operation with only minor damage allowed and no disruption to traffic. The second level targets tunnel operation for emergency traffic only, with some damage needing repair allowed. The third level is targeted at life safety and prevention of tunnel collapse.

AB - Assessment of tunnel support performance under seismic conditions in the Sydney region has continued to develop and improve. The ground motion characteristics of design earthquakes are used to estimate tunnel deformation with closed form elastic solutions and numerical analysis. This paper describes the selection of the design earthquakes, ground motion characteristics and the applied methodology.This paper also proposes a new approach based on Austroads' Guide to Road Tunnels. The new approach comprises a three-level design criterion. Each level assesses the tunnel response against a different return period earthquake. The first level assesses the tunnel for continuous operation with only minor damage allowed and no disruption to traffic. The second level targets tunnel operation for emergency traffic only, with some damage needing repair allowed. The third level is targeted at life safety and prevention of tunnel collapse.

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M3 - Conference paper

SN - 9781922107985

BT - 16th Australasian Tunnelling Conference 2017: Challenging Underground Space : Bigger, Better, More

PB - Engineers Australia

CY - Australia

T2 - 16th Australasian Tunnelling Conference 2017

Y2 - 30 October 2017 through 1 November 2017

ER -

Designing tunnels in Sydney for earthquakes

Abstract

Conference

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