JP2011069825A - 塗装表面のクリープ現象による軸力損失量を考慮した締結済み高力ボルトの長期軸力算定方法 - Google Patents
塗装表面のクリープ現象による軸力損失量を考慮した締結済み高力ボルトの長期軸力算定方法 Download PDFInfo
- Publication number
- JP2011069825A JP2011069825A JP2010213319A JP2010213319A JP2011069825A JP 2011069825 A JP2011069825 A JP 2011069825A JP 2010213319 A JP2010213319 A JP 2010213319A JP 2010213319 A JP2010213319 A JP 2010213319A JP 2011069825 A JP2011069825 A JP 2011069825A
- Authority
- JP
- Japan
- Prior art keywords
- axial force
- strength bolt
- long
- creep
- fastened
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
【解決手段】本発明は、高力ボルトの摩擦接合部を締結した後、所定時間が経過した後の前記高力ボルトのクリープ応力が下記の式(1)(a、b:定数、t:時間)によって計算される、塗装表面のクリープ現象による軸力損失量を考慮した締結済み高力ボルトの長期軸力算定方法を提供する。
【数1】
【選択図】図2
Description
F(t):所定時間経過後の高力ボルトの締結力
Fo:初期高力ボルトの締結力
Cf:高力ボルトのスプリング定数
Ho:接合部材に塗布された塗装厚さ
Ac:接合部に影響を及ぼす塗装面積
t:時間
高力ボルト130接合部滑り表面に無機質亜鉛塗装96μm(標準偏差19μm)が適用された場合を考慮した高力ボルト130ジョイント部の長期軸力弛緩による無機質亜鉛塗装表面のクリープと軸力弛緩式は下記のとおりである。1,000時間まで無機質亜鉛塗装によって塗布された高力ボルト130ジョイント部に適用された実験結果、塗装のクリープ曲線は図2のとおりであり、塗装のクリープに関する回帰分析数式は数式3で決定され、このときのグラフは図3のとおりである。
Creep Strain(96)=1.0×10−4+3.0×10−5×log(t)
Creep Strain(168)=2.0×10−4+4.0×10−5×log(t)
Creep Strain(226)=3.0×10−4+4.5×10−5×log(t)
130:高力ボルト
Claims (5)
- 高力ボルトの摩擦接合部を締結した後、所定時間が経過した後の前記高力ボルトのクリープ応力は下記の式(1)によって計算される、塗装表面のクリープ現象による軸力損失量を考慮した締結済み高力ボルトの長期軸力算定方法。
- 前記所定時間は1000時間である、請求項1に記載の塗装表面のクリープ現象による軸力損失量を考慮した締結済み高力ボルトの長期軸力算定方法。
- 前記aおよびbは前記高力ボルトに塗布される無機質亜鉛塗装の厚さに基づいて決定される、請求項1に記載の塗装表面のクリープ現象による軸力損失量を考慮した締結済み高力ボルトの長期軸力算定方法。
- 前記所定時間の経過後の前記高力ボルトの締結力は下記の式(2)によって計算される、請求項1に記載の塗装表面のクリープ現象による軸力損失量を考慮した締結済み高力ボルトの長期軸力算定方法。
F(t):所定時間経過後の高力ボルトの締結力
Fo:初期高力ボルトの締結力
Cf:高力ボルトのスプリング定数
Ho:接合部材に塗布された塗装厚さ
Ac:接合部に影響を及ぼす塗装面積
t:時間 - 前記αは前記高力ボルトに塗布される無機質亜鉛塗装の厚さに基づいて決定される、請求項4に記載の塗装表面のクリープ現象による軸力損失量を考慮した締結済み高力ボルトの長期軸力算定方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020090091270A KR20110033687A (ko) | 2009-09-25 | 2009-09-25 | 도장표면의 크리프 현상에 따른 축력손실량을 고려한 기 체결된 고력볼트 장기축력산정 방법 |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2011069825A true JP2011069825A (ja) | 2011-04-07 |
Family
ID=43938054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010213319A Pending JP2011069825A (ja) | 2009-09-25 | 2010-09-24 | 塗装表面のクリープ現象による軸力損失量を考慮した締結済み高力ボルトの長期軸力算定方法 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP2011069825A (ja) |
KR (1) | KR20110033687A (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104296986A (zh) * | 2014-10-28 | 2015-01-21 | 兰州理工大学 | 一种基于附加子结构的螺栓连接状态监测方法及其系统 |
CN115326263A (zh) * | 2022-08-18 | 2022-11-11 | 广东省公路建设有限公司湾区特大桥养护技术中心 | 索夹螺杆轴力的应变反演方法 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103115701A (zh) * | 2013-01-18 | 2013-05-22 | 上海大学 | 一种测定冷成型薄壁c型钢应力分布及其弯心或剪心的实验装置 |
CN112227208B (zh) * | 2020-09-23 | 2022-03-29 | 中铁大桥局集团有限公司 | 一种用于悬索桥索夹螺杆施工期及运营期的监测预报方法 |
KR102371393B1 (ko) | 2020-10-14 | 2022-03-07 | 지니텍 | 고장력 볼트의 체결력의 감소율을 추정하기 위한 방법 및 이를 수행하기 위한 애플리케이션 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005308212A (ja) * | 2004-03-23 | 2005-11-04 | West Japan Railway Co | ボルト接合部構造 |
-
2009
- 2009-09-25 KR KR1020090091270A patent/KR20110033687A/ko not_active Application Discontinuation
-
2010
- 2010-09-24 JP JP2010213319A patent/JP2011069825A/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005308212A (ja) * | 2004-03-23 | 2005-11-04 | West Japan Railway Co | ボルト接合部構造 |
Non-Patent Citations (3)
Title |
---|
JPN6012048052; 狩野正人 等: '塗膜のクリープが高力ボルトの軸力低下に及ぼす影響' 土木学会年次学術講演会講演概要集(CD-ROM) VOL.57th, 20020901, I-131 * |
JPN6012048053; 名護典寛 等: 'ガスケットの粘弾塑性特性とボルト締結体の軸力緩和予測' 圧力技術 Vol.45,No.4, 20070725, 195-204 * |
JPN6012048054; 中村眞行 等: 'リラクセーションによるボルト締結体の軸力低下予測手法の検討' 日本機械学會論文集. C編 Vol.65,No.640, 19991225, 4826-4831 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104296986A (zh) * | 2014-10-28 | 2015-01-21 | 兰州理工大学 | 一种基于附加子结构的螺栓连接状态监测方法及其系统 |
CN115326263A (zh) * | 2022-08-18 | 2022-11-11 | 广东省公路建设有限公司湾区特大桥养护技术中心 | 索夹螺杆轴力的应变反演方法 |
Also Published As
Publication number | Publication date |
---|---|
KR20110033687A (ko) | 2011-03-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Jiménez-Peña et al. | Investigations on the fretting fatigue failure mechanism of bolted joints in high strength steel subjected to different levels of pre-tension | |
Zhang et al. | Vibro-acoustic modulation (VAM)-inspired structural integrity monitoring and its applications to bolted composite joints | |
Rocha et al. | Numerical analysis of mixed-mode fatigue crack growth of adhesive joints using CZM | |
Coelho et al. | Experimental assessment of the ductility of extended end plate connections | |
US7889840B2 (en) | System and method for predicting material fatigue and damage | |
US20120053858A1 (en) | Fatigue Life Estimation Method and System | |
JP2011069825A (ja) | 塗装表面のクリープ現象による軸力損失量を考慮した締結済み高力ボルトの長期軸力算定方法 | |
Li et al. | A fretting related damage parameter for fretting fatigue life prediction | |
US9513200B1 (en) | Determination of a threshold crack length | |
Fernández et al. | Composite bonded joints under mode I fatigue loading | |
Matvienko | Safety factors in structural integrity assessment of components with defects | |
Mendoza-Navarro et al. | Interfacial failure in adhesive joints: Experiments and predictions | |
Schneider et al. | An experimental investigation of the fatigue damage behaviour of adhesively bonded joints under the combined effect of variable amplitude stress and temperature variation | |
Esmaeili et al. | Fatigue life estimation of double lap simple bolted and hybrid (bolted/bonded) joints using several multiaxial fatigue criteria | |
Marzi | Measuring the critical energy release rate in mode II of tough, structural adhesive joints using the tapered end-notched flexure (TENF) test | |
Li et al. | Elastic-plastic stress-strain calculation at notch root under monotonic, uniaxial and multiaxial loadings | |
Jensen et al. | Transient delamination growth in GFRP laminates with fibre bridging under variable amplitude loading in G-control | |
Yang et al. | Analytical models for the initial axial tensile stiffness and ultimate tensile load of a T-stub, including the effects of prying action | |
Sousa et al. | The influence of mode mixity and adhesive system on the fatigue life of adhesive joints | |
Jin et al. | A new driving force parameter for fatigue growth of multiple cracks | |
Shenoy et al. | Strength wearout of adhesively bonded joints under constant amplitude fatigue | |
Abazadeh et al. | An estimation of fatigue crack initiation and growth lives of Al 2024-T3 in double lap bolted joints with interference fitted holes | |
Seif et al. | Experimental study on the fracture capacity and fatigue life reduction of the tensioned cracked plate due to the local buckling | |
Reynolds et al. | Stiffness of dowel-type timber connections under pre-yield oscillating loads | |
Zhang et al. | An experimental and simulation study of interface crack on zinc coating/304 stainless steel |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20120905 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20120918 |
|
A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20121214 |
|
A602 | Written permission of extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A602 Effective date: 20121219 |
|
A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20130117 |
|
A602 | Written permission of extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A602 Effective date: 20130122 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20130507 |