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GGRROOUUNNDD AANNCCHHOORRSS –– tthhee iimmppoorrttaannccee ooff mmaaiinntteennaannccee aanndd iinnssppeeccttiioonnss aanndd ssoommee rreecceenntt ddeevveellooppmmeennttss presentation by Dr Devon Mothersille SBMA Ltd FEBRUARY 2011 Tonight’s presentation Some special applications The importance of maintenance and inspections Changes in European Standards Recent developments Final Remarks INTRODUCTION AND BACKGROUND TERMINOLOGY Figure 1 from EN 1537:2000 - Sketch of a ground anchor (details of anchor head and head protection omitted) GRGORUONUDNDANACNHCOHRORMAMRAKREKTESTESCETCOTROSRS SSEECCTTOORR 11  Rockboltsandsoil  Lowcapacityground nails anchors  Lengthsupto10m  Lengthsupto12m Loadsupto100kN  Loadsupto500kN GROUND ANCHOR MARKET SECTORS SECTOR 1  Rockboltsandsoil  Lowcapacityground nails anchors  Lengthsupto6m  Lengthsupto12m Loadsupto100kN  Loadsupto500kN SECTOR 2  Mediumtohighcapacitygroundanchors  Lengths:12mto130m  Testloadsupto20000kN SOME SPECIAL APPLICATIONS Tunnel subjected to a maximum hydrostatic head of 60m (courtesy PSM) Burnley Tunnel, Melbourne, Australia Typical cross section through the central section of the tunnel showing fanned arrays of 46mm diameter monobar anchors with overall lengths varying between 7 - 10m. In total some 5200 anchors with working load of 1000kN were installed over a distance of 2km to resist uplift pressures

Description:

Figure 1 from EN 1537:2000 - Sketch of a ground anchor. (details of anchor head and head protection omitted) . Typical anchor head detail (BS 8081:1989)

GROUND ANCHORS - Australian Geomechanics Society PDF

108 Pages·2011·5.36 MB·English

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GGRROOUUNNDD AANNCCHHOORRSS –– tthhee iimmppoorrttaannccee ooff mmaaiinntteennaannccee aanndd iinnssppeeccttiioonnss aanndd ssoommee rreecceenntt ddeevveellooppmmeennttss presentation by Dr Devon Mothersille SBMA Ltd FEBRUARY 2011 Tonight’s presentation Some special applications The importance of maintenance and inspections Changes in European Standards Recent developments Final Remarks INTRODUCTION AND BACKGROUND TERMINOLOGY Figure 1 from EN 1537:2000 - Sketch of a ground anchor (details of anchor head and head protection omitted) GRGORUONUDNDANACNHCOHRORMAMRAKREKTESTESCETCOTROSRS SSEECCTTOORR 11  Rockboltsandsoil  Lowcapacityground nails anchors  Lengthsupto10m  Lengthsupto12m Loadsupto100kN  Loadsupto500kN GROUND ANCHOR MARKET SECTORS SECTOR 1  Rockboltsandsoil  Lowcapacityground nails anchors  Lengthsupto6m  Lengthsupto12m Loadsupto100kN  Loadsupto500kN SECTOR 2  Mediumtohighcapacitygroundanchors  Lengths:12mto130m  Testloadsupto20000kN SOME SPECIAL APPLICATIONS Tunnel subjected to a maximum hydrostatic head of 60m (courtesy PSM) Burnley Tunnel, Melbourne, Australia Typical cross section through the central section of the tunnel showing fanned arrays of 46mm diameter monobar anchors with overall lengths varying between 7 - 10m. In total some 5200 anchors with working load of 1000kN were installed over a distance of 2km to resist uplift pressures

Description:

Figure 1 from EN 1537:2000 - Sketch of a ground anchor. (details of anchor head and head protection omitted) . Typical anchor head detail (BS 8081:1989)

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