JP2006336294A - 杭頭部の補強方法 - Google Patents
杭頭部の補強方法 Download PDFInfo
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- JP2006336294A JP2006336294A JP2005162138A JP2005162138A JP2006336294A JP 2006336294 A JP2006336294 A JP 2006336294A JP 2005162138 A JP2005162138 A JP 2005162138A JP 2005162138 A JP2005162138 A JP 2005162138A JP 2006336294 A JP2006336294 A JP 2006336294A
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Abstract
【解決手段】杭頭部12aの周囲の地盤21に地盤改良材(グラウト3)を注入することによって、前記杭頭部12aの外周面に付着した地盤固結体23を造成するものである。このため、杭の上に構築された上部構造体の荷重は杭頭部に直接伝達された後、杭へそのまま伝達されていくものと、杭の外周面と地盤固結体との付着力によって地盤固結体に伝達され、地盤固結体下部の地盤へ伝達されるものとになる。
また、この地盤固結体23は、杭頭部12aの損傷部分を埋めると共に、地震発生時に液状化しやすい地盤においては、液状化の発生を抑制し、地盤21の剪断抵抗を増大する。
【選択図】図1
Description
115000N/6585cm2=17.5N/cm2
となる。
150000N/6585cm2=22.8N/cm2
となる。
11 基礎
12,12A 杭
12a 杭頭部
13 基礎梁
14 フーチング
2 地盤
21 上部地盤
21a 掘削孔
22 支持地盤
23 地盤固結体
3 グラウト(地盤改良材)
4 ジェットグラウト装置
Claims (3)
- 杭頭部の周囲地盤に地盤改良材を注入することによって、前記杭頭部の外周面に付着した地盤固結体を造成することを特徴とする杭頭部の補強方法。
- 地盤固結体を、杭の上に構築された上部構造体の基礎底面と接した状態に造成することを特徴とする請求項1に記載の杭頭部の補強方法。
- 地盤改良材の注入を、ジェットグラウト工法又は薬液注入工法により行うことを特徴とする請求項1に記載の杭頭部の補強方法。
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JP2005162138A JP4643364B2 (ja) | 2005-06-02 | 2005-06-02 | 杭頭部の補強方法 |
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JP2005162138A JP4643364B2 (ja) | 2005-06-02 | 2005-06-02 | 杭頭部の補強方法 |
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JP2006336294A true JP2006336294A (ja) | 2006-12-14 |
JP4643364B2 JP4643364B2 (ja) | 2011-03-02 |
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009035927A (ja) * | 2007-08-01 | 2009-02-19 | Shimizu Corp | 既存構造物基礎の補強工法および補強構造 |
CN102926303A (zh) * | 2012-11-22 | 2013-02-13 | 河海大学 | 现役高等级公路软土地基沉降控制桩基支托再加固方法 |
CN103147470A (zh) * | 2013-03-28 | 2013-06-12 | 中国建筑第八工程局有限公司 | 灌注桩静载试验桩头及其施工方法 |
CN103276728A (zh) * | 2013-05-20 | 2013-09-04 | 福建建华管桩有限公司 | 一种桩头修补及加固的方法 |
JP2016160700A (ja) * | 2015-03-04 | 2016-09-05 | 東日本旅客鉄道株式会社 | 基礎補強方法 |
CN106759311A (zh) * | 2016-12-16 | 2017-05-31 | 中建四局第建筑工程有限公司 | 一种复杂地质条件下桩基缺陷注浆处理方法 |
CN106759559A (zh) * | 2016-12-16 | 2017-05-31 | 中建四局第建筑工程有限公司 | 一种钢管加固桩基结构及其施工方法 |
CN111364495A (zh) * | 2020-03-16 | 2020-07-03 | 白城师范学院 | 一种防冻胀和抗震复合基础结构 |
CN112942309A (zh) * | 2021-02-03 | 2021-06-11 | 山西晋建加固特种建筑工程有限公司 | 独立桩基栅格式注浆加固的施工方法 |
CN113215892A (zh) * | 2021-05-26 | 2021-08-06 | 金陵科技学院 | 一种注浆土拱诱导式桩承式路堤 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7267890B2 (ja) * | 2019-09-26 | 2023-05-02 | ケミカルグラウト株式会社 | 構造物基礎補強方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08296240A (ja) * | 1995-04-26 | 1996-11-12 | Kajima Corp | 既存基礎の耐震補強工法 |
JPH10219670A (ja) * | 1997-02-05 | 1998-08-18 | Shimizu Corp | 地盤側方流動防止工法 |
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2005
- 2005-06-02 JP JP2005162138A patent/JP4643364B2/ja active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08296240A (ja) * | 1995-04-26 | 1996-11-12 | Kajima Corp | 既存基礎の耐震補強工法 |
JPH10219670A (ja) * | 1997-02-05 | 1998-08-18 | Shimizu Corp | 地盤側方流動防止工法 |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009035927A (ja) * | 2007-08-01 | 2009-02-19 | Shimizu Corp | 既存構造物基礎の補強工法および補強構造 |
CN102926303A (zh) * | 2012-11-22 | 2013-02-13 | 河海大学 | 现役高等级公路软土地基沉降控制桩基支托再加固方法 |
CN103147470A (zh) * | 2013-03-28 | 2013-06-12 | 中国建筑第八工程局有限公司 | 灌注桩静载试验桩头及其施工方法 |
CN103276728A (zh) * | 2013-05-20 | 2013-09-04 | 福建建华管桩有限公司 | 一种桩头修补及加固的方法 |
JP2016160700A (ja) * | 2015-03-04 | 2016-09-05 | 東日本旅客鉄道株式会社 | 基礎補強方法 |
CN106759311A (zh) * | 2016-12-16 | 2017-05-31 | 中建四局第建筑工程有限公司 | 一种复杂地质条件下桩基缺陷注浆处理方法 |
CN106759559A (zh) * | 2016-12-16 | 2017-05-31 | 中建四局第建筑工程有限公司 | 一种钢管加固桩基结构及其施工方法 |
CN111364495A (zh) * | 2020-03-16 | 2020-07-03 | 白城师范学院 | 一种防冻胀和抗震复合基础结构 |
CN112942309A (zh) * | 2021-02-03 | 2021-06-11 | 山西晋建加固特种建筑工程有限公司 | 独立桩基栅格式注浆加固的施工方法 |
CN113215892A (zh) * | 2021-05-26 | 2021-08-06 | 金陵科技学院 | 一种注浆土拱诱导式桩承式路堤 |
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