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Mechanics analysis of thin-walled box continuous girder with variable cross-sections in considering effect

Yuji CHEN, Qizhi LUO,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 4,   Pages 352-356 doi: 10.1007/s11709-009-0057-7

Abstract: In order to study the mechanics behavior of a thin-walled box continuous girder with variable cross-sectionsbox continuous girder with variable cross-section was transformed to a nonlinear algebraic equation,The thin-walled box continuous girder with variable cross-sections has more reasonable stress state andThe effect of large deflection on the stress and displacement of the thin-walled box continuous girderwith variable cross-sections depends on the values of the load.

Keywords： thin-walled box girder with variable cross-sections     potential variational theory     shear lag     large deflection    

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An analytical method for calculating torsional constants for arbitrary complicated thin-walled cross-sections

DU Baisong, GE Yaojun, ZHOU Zheng

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 3,   Pages 293-297 doi: 10.1007/s11709-007-0038-7

Abstract: In this paper, an analytical method is proposed for calculating torsional constants for complicated thin-walledcross-sections with arbitrary closed or open rib stiffeners.Finally, a complicated thin-walled cross-section is given as a valid numerical example to verify the

Keywords： homogeneous     complicated thin-walled     numerical example     advantage     torsional function    

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Fixturing technology and system for thin-walled parts machining: a review

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0711-5

Abstract: During the overall processing of thin-walled parts (TWPs), the guaranteed capability of the machining

Keywords： thin-walled part (TWP)     fixture     machining     fixture categories     fixture function    

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Position-varying surface roughness prediction method considering compensated acceleration in milling of thin-walled

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 855-867 doi: 10.1007/s11465-021-0649-z

Abstract: Machined surface roughness will affect parts’ service performance. Thus, predicting it in the machining is important to avoid rejects. Surface roughness will be affected by system position dependent vibration even under constant parameter with certain toolpath processing in the finishing. Aiming at surface roughness prediction in the machining process, this paper proposes a position-varying surface roughness prediction method based on compensated acceleration by using regression analysis. To reduce the stochastic error of measuring the machined surface profile height, the surface area is repeatedly measured three times, and Pauta criterion is adopted to eliminate abnormal points. The actual vibration state at any processing position is obtained through the single-point monitoring acceleration compensation model. Seven acceleration features are extracted, and valley, which has the highest R-square proving the effectiveness of the filtering features, is selected as the input of the prediction model by mutual information coefficients. Finally, by comparing the measured and predicted surface roughness curves, they have the same trends, with the average error of 16.28% and the minimum error of 0.16%. Moreover, the prediction curve matches and agrees well with the actual surface state, which verifies the accuracy and reliability of the model.

Keywords： surface roughness prediction     compensated acceleration     milling     thin-walled workpiece    

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A study on bearing characteristic and failure mechanism of thin-walled structure of a prefabricated subway

Lianjin TAO; Cheng SHI; Peng DING; Sicheng LI; Shang WU; Yan BAO

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 3,   Pages 359-377 doi: 10.1007/s11709-022-0816-2

Abstract: Finally, the development law of damages to a thin-walled prefabricated component and the failure evolutionThe existing thin-walled components design had significant advantages in weight reduction, concrete temperature

Keywords： prefabricated subway station     thin-walled components     finite element analysis     bearing characteristic    

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Experimental study on the temperature dependence of ultraviolet absorption cross-sections of sulfur dioxide

ZHANG Shiliang, ZHOU Jie, CHEN Xiaohu

Frontiers in Energy 2008, Volume 2, Issue 2,   Pages 183-186 doi: 10.1007/s11708-008-0025-2

Abstract: The photoabsorption cross-sections of sulfur dioxide were measured in the spectral regions of 200–230The discrete absorption cross-section is directly correlated with the number of quantum excited fromThe absorption cross-sections at the peaks of discrete bands decreased linearly with the increase ofThe absorption cross-section peaks decreased linearly when the temperature increased from 298 to 415
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Stability analysis of large diameter thin-walled tube beam-columns

PAN Hanming, GUO Yanlin, LIANG Shuo, PEI Shengxing, LIANG Weisheng, WANG Lewen

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 2,   Pages 123-132 doi: 10.1007/s11709-008-0017-7

Abstract: Based on a blind spot in the current design standard of steel structures, the large diameter thin-walledThe influence of several factors on stability capacity of the large diameter thin-walled tube beam-columnsformulas of the stability bearing capacity are presented for beam-column members of the large diameter thin-walledThree tests of thin-walled steel tube beam-columns were reported.

Keywords： ultimate strength     nonlinear     numerical analytical     diameter thin-walled     practice    

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hybrid deep learning model for robust prediction of the dimensional accuracy in precision milling of thin-walled

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0688-0

Abstract: In this study, we develop a predictive model of the dimensional accuracy for precision milling of thin-walled

Keywords： precision milling     dimensional accuracy     cutting force     convolutional neural networks     coherent noise    

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Fundamentals and Processes of Fluid Pressure Forming Technology for Complex Thin-Walled Components Review

Shijian Yuan

Engineering 2021, Volume 7, Issue 3,   Pages 358-366 doi: 10.1016/j.eng.2020.08.014

Abstract: process and equipment, and precise finite element simulation of inhomogeneous and strong anisotropic thin

Keywords： Fluid pressure forming     Hydroforming     Hot medium pressure forming     Thin-walled components     Stress state    

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The processing and precision control of large thinwall steel caisson

Peng Wu,Lin Fan,Zhao Qiang,Ma Jianle

Strategic Study of CAE 2010, Volume 12, Issue 4,   Pages 21-24

Abstract: text-align: justify;">It was discussed the proper choice for processing and welding technology of large thin-wallAccording to the caisson's characteristics of large size and thin wall, reasonable welding and assemblyassembling pieces of each unit and the whole caisson, and the welding and anti-deformation precision of thin-wall

Keywords： large thin-walled     steel caisson     processing     precision control    

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Experimental monitoring of the strengthening construction of a segmental box girder bridge and field

Ali Fadhil NASER, Zonglin WANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 308-320 doi: 10.1007/s11709-012-0140-3

Abstract: Prestressed concrete segmental box girder bridges are composed of short concrete segments that are eithertension forces are applied to the external tendons; measuring the deformation of the steel deviation crossbeam during the tension process; measuring the deformation of the box girder after different levelstest is performed to the anchorage beam, the steel deviation block devices, and the steel deviation cross

Keywords： prestressed concrete     box girder     monitoring     external tendons     strain     deflection    

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Fatigue analysis of steel box girder in key sections for threetower suspension bridge under random vehicle

Chen Ce,Ji Bohai and Liu Rong

Strategic Study of CAE 2012, Volume 14, Issue 5,   Pages 75-79

Abstract: and bending moment values are calculated to analyze the position of the maximum stress for the steel boxgirder under vehicle load.Then the critical position can be determined to carry out fatigue analysis for the steel box girder.

Keywords： three-tower suspension bridge     orthotropic plate     fatigue stress analysis     key sections    

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Temperature variation of concrete box girder bridge

Jian WANG, Zhi FANG,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 4,   Pages 407-413 doi: 10.1007/s11709-009-0053-y

Abstract: theoretical analysis and measurement on site, the temperature gradients and its variation on concrete boxgirder bridges resulting from ambient temperature, solar radiation, and structural temperature fieldsthe heat transfer theory and finite element method (FEM), the heat flux of the surface of concrete boxgirder was carried out, and all the heat fluxes were described as the convection.Last, some conclusions were obtained, which could provide the basis for box girder design under solar

Keywords： temperature     transfer     correlation     radiation     variation    

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Field test on temperature field and thermal stress for prestressed concrete box-girder bridge

Baoguo CHEN, Rui DING, Junjie ZHENG, Shibiao ZHANG

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2,   Pages 158-164 doi: 10.1007/s11709-009-0002-9

Abstract: distribution of temperature field and the variation of thermal stress for a prestressed concrete (PC) box-girderfield tests, the thermal stress incurred by hydration heat may induce temperature cracks on the PC box-girderThe conclusions can provide valuable reference for the design and construction of PC box-girder bridges

Keywords： box-girder bridge     field test     hydration heat     temperature field     temperature gradient     thermal stress    

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Research of steel box girder dehumidification in Taizhou Bridge

Li Lin and Xu Jun

Strategic Study of CAE 2012, Volume 14, Issue 5,   Pages 10-13

Abstract:

The steel box girder of Taizhou Bridge is 2 160 m long with volume ofThe paper analyzes the principle, lectotype, setting, workflow and construction of the steel box girderAnd the paper protocols the quality inspection and evaluation standards of the steel box girder dehumidification

Keywords： Taizhou Bridge     steel box girder     dehumidification     research    

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Title Author Date Type Operation

Mechanics analysis of thin-walled box continuous girder with variable cross-sections in considering effect

Yuji CHEN, Qizhi LUO,

Journal Article

An analytical method for calculating torsional constants for arbitrary complicated thin-walled cross-sections

DU Baisong, GE Yaojun, ZHOU Zheng

Journal Article

Fixturing technology and system for thin-walled parts machining: a review

Journal Article

Position-varying surface roughness prediction method considering compensated acceleration in milling of thin-walled

Journal Article

A study on bearing characteristic and failure mechanism of thin-walled structure of a prefabricated subway

Lianjin TAO; Cheng SHI; Peng DING; Sicheng LI; Shang WU; Yan BAO

Journal Article

Experimental study on the temperature dependence of ultraviolet absorption cross-sections of sulfur dioxide

ZHANG Shiliang, ZHOU Jie, CHEN Xiaohu

Journal Article

Stability analysis of large diameter thin-walled tube beam-columns

PAN Hanming, GUO Yanlin, LIANG Shuo, PEI Shengxing, LIANG Weisheng, WANG Lewen

Journal Article

hybrid deep learning model for robust prediction of the dimensional accuracy in precision milling of thin-walled

Journal Article

Fundamentals and Processes of Fluid Pressure Forming Technology for Complex Thin-Walled Components

Shijian Yuan

Journal Article

The processing and precision control of large thinwall steel caisson

Peng Wu,Lin Fan,Zhao Qiang,Ma Jianle

Journal Article

Experimental monitoring of the strengthening construction of a segmental box girder bridge and field

Ali Fadhil NASER, Zonglin WANG

Journal Article

Fatigue analysis of steel box girder in key sections for threetower suspension bridge under random vehicle

Chen Ce,Ji Bohai and Liu Rong

Journal Article

Temperature variation of concrete box girder bridge

Jian WANG, Zhi FANG,

Journal Article

Field test on temperature field and thermal stress for prestressed concrete box-girder bridge

Baoguo CHEN, Rui DING, Junjie ZHENG, Shibiao ZHANG

Journal Article

Research of steel box girder dehumidification in Taizhou Bridge

Li Lin and Xu Jun

Journal Article