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A platform for research: civil engineering, architecture and urbanism
UNLOADING METHOD FOR GROUND ANCHOR
PROBLEM TO BE SOLVED: To provide an unloading method for a ground anchor, which can remove a tensioning force added to a prestressing strand, by easily and reliably detaching an anchorage wedge even when the extra length of a tendon is extremely short.SOLUTION: An unloading method for a ground anchor 100 includes the steps of: cutting a tendon 1 (prestressing strand) within an anchorage wedge 2; inserting a plate material, which prevents the anchorage wedge 2 from biting into the tendon 1 during unloading work, into a clearance of the anchorage wedge 2; and re-anchoring the tendon 1 pulled into the underground side after the ground anchor 100 is unloaded.
【課題】テンドン余長が極めて短い場合であっても定着クサビを容易且つ確実に取り外して、ＰＣ鋼撚り線に付加された緊張力を除去することが出来るグラウンドアンカーの除荷方法を提供する。【解決手段】グラウンドアンカー１００の除荷方法は、定着クサビ２内のテンドン１（ＰＣ鋼撚り線）を切削する工程と、除荷作業時に定着クサビ２がテンドン１に食い込むことを防止する板材を定着クサビ２の隙間に挿入する行程、グラウンドアンカー１００の除荷後地中側へ引き込まれてしまったテンドン１を再定着する行程を備える。【選択図】図３
UNLOADING METHOD FOR GROUND ANCHOR
PROBLEM TO BE SOLVED: To provide an unloading method for a ground anchor, which can remove a tensioning force added to a prestressing strand, by easily and reliably detaching an anchorage wedge even when the extra length of a tendon is extremely short.SOLUTION: An unloading method for a ground anchor 100 includes the steps of: cutting a tendon 1 (prestressing strand) within an anchorage wedge 2; inserting a plate material, which prevents the anchorage wedge 2 from biting into the tendon 1 during unloading work, into a clearance of the anchorage wedge 2; and re-anchoring the tendon 1 pulled into the underground side after the ground anchor 100 is unloaded.
【課題】テンドン余長が極めて短い場合であっても定着クサビを容易且つ確実に取り外して、ＰＣ鋼撚り線に付加された緊張力を除去することが出来るグラウンドアンカーの除荷方法を提供する。【解決手段】グラウンドアンカー１００の除荷方法は、定着クサビ２内のテンドン１（ＰＣ鋼撚り線）を切削する工程と、除荷作業時に定着クサビ２がテンドン１に食い込むことを防止する板材を定着クサビ２の隙間に挿入する行程、グラウンドアンカー１００の除荷後地中側へ引き込まれてしまったテンドン１を再定着する行程を備える。【選択図】図３
UNLOADING METHOD FOR GROUND ANCHOR
グラウンドアンカーの除荷方法
KAWASAKI HIROTAKA (author) / INOUE MASASHI (author) / NISHIDA NAOYA (author) / NOGUCHI AKIRA (author)
2016-01-14
Patent
Electronic Resource
Japanese
IPC:
E02D
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