JP4173089B2 - 動的載荷試験方法 - Google Patents
動的載荷試験方法 Download PDFInfo
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- JP4173089B2 JP4173089B2 JP2003426481A JP2003426481A JP4173089B2 JP 4173089 B2 JP4173089 B2 JP 4173089B2 JP 2003426481 A JP2003426481 A JP 2003426481A JP 2003426481 A JP2003426481 A JP 2003426481A JP 4173089 B2 JP4173089 B2 JP 4173089B2
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- pile
- hit
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- loading test
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- 238000011068 loading method Methods 0.000 title claims description 37
- 238000010998 test method Methods 0.000 title claims description 13
- 238000012360 testing method Methods 0.000 claims description 27
- 230000035939 shock Effects 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000001902 propagating effect Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000001133 acceleration Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Description
杭の鉛直載荷試験方法・同解説編集委員会,「地盤工学会基準 杭の鉛直載荷試験方法・同解説−第一回改訂版−」,社団法人地盤工学会,2002年5月28日
この発明の目的は、杭などの被打撃体の軸方向力などを精度良く計測することを可能とし、被打撃体の全体にわたって精度の高い支持力を算定することができる動的載荷試験方法を提供することにある。
すなわち、杭などの被打撃体の頭部をハンマー等を用いて打撃し、この被打撃体中を伝播する衝撃波を計測してその解析データから被打撃体・地盤系の支持力を算定する動的載荷試験方法において、
試験対象とする被打撃体に対して複数回の打撃を加えて、各回の打撃ごとに衝撃波を計測し、
各回の打撃で計測された衝撃波に関してそれぞれ波形マッチング解析を行って、深度範囲ごとの被打撃体周面の最大抵抗及びバネ剛性、また被打撃体先端の最大抵抗及びバネ剛性を含む地盤データを得たのち、
各深度範囲及び被打撃体先端に関して各回の打撃で得られた地盤データのうち抵抗が最大となる被打撃体周面の最大抵抗及びバネ剛性、また被打撃体先端の最大抵抗及びバネ剛性をそれぞれ抽出し、これら抽出データから当該被打撃体・地盤系の支持力を算定することを特徴とする動的載荷試験方法にある。
2 センサー
3 ハンマー
4 ポータブルコンピューター
Claims (1)
- 杭などの被打撃体の頭部をハンマー等を用いて打撃し、この被打撃体中を伝播する衝撃波を計測してその解析データから被打撃体・地盤系の支持力を算定する動的載荷試験方法において、
試験対象とする被打撃体に対して複数回の打撃を加えて、各回の打撃ごとに衝撃波を計測し、
各回の打撃で計測された衝撃波に関してそれぞれ波形マッチング解析を行って、深度範囲ごとの被打撃体周面の最大抵抗及びバネ剛性、また被打撃体先端の最大抵抗及びバネ剛性を含む地盤データを得たのち、
各深度範囲及び被打撃体先端に関して各回の打撃で得られた地盤データのうち抵抗が最大となる被打撃体周面の最大抵抗及びバネ剛性、また被打撃体先端の最大抵抗及びバネ剛性をそれぞれ抽出し、これら抽出データから当該被打撃体・地盤系の支持力を算定することを特徴とする動的載荷試験方法。
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JP2003426481A JP4173089B2 (ja) | 2003-12-24 | 2003-12-24 | 動的載荷試験方法 |
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JP2003426481A JP4173089B2 (ja) | 2003-12-24 | 2003-12-24 | 動的載荷試験方法 |
Publications (2)
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JP2005180137A JP2005180137A (ja) | 2005-07-07 |
JP4173089B2 true JP4173089B2 (ja) | 2008-10-29 |
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JP2003426481A Expired - Lifetime JP4173089B2 (ja) | 2003-12-24 | 2003-12-24 | 動的載荷試験方法 |
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Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4847107B2 (ja) * | 2005-11-21 | 2011-12-28 | ジャパンパイル株式会社 | 杭の動的水平載荷試験方法及び動的水平載荷試験装置 |
JP4623596B2 (ja) * | 2006-10-31 | 2011-02-02 | ジャパンパイル株式会社 | 杭頭偏打調整装置 |
JP4885791B2 (ja) * | 2007-05-18 | 2012-02-29 | ジャパンパイル株式会社 | 杭の動的水平載荷試験装置 |
KR100792211B1 (ko) | 2007-09-21 | 2008-01-07 | 지에스이앤씨(주) | 매입말뚝의 지지력 계산방법 |
KR101600477B1 (ko) * | 2015-07-03 | 2016-03-07 | 광일종합건설 주식회사 | 개선된 강관말뚝 매립 공정을 통해 안정성을 향상시킨 탑다운 공법 |
JP6754662B2 (ja) * | 2016-10-11 | 2020-09-16 | 多摩火薬機工株式会社 | 動的荷重試験装置、及びこれを用いた場所打ちコンクリート杭の掘削先端地盤の支持力確認方法 |
JP7257748B2 (ja) * | 2017-08-07 | 2023-04-14 | 清水建設株式会社 | 杭評価方法 |
KR102283609B1 (ko) * | 2019-12-05 | 2021-07-29 | 한국교통대학교산학협력단 | 교량 하부 무상기초의 근입깊이 및 지반지지력 산정방법 |
JP7046126B2 (ja) * | 2020-07-28 | 2022-04-01 | 戸田建設株式会社 | 杭の性能推定方法 |
CN116290141A (zh) * | 2023-03-01 | 2023-06-23 | 盐城市天恒建设工程质量检测有限公司 | 便携式桩基无损检测仪 |
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