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Improvement of aerodynamic stability of suspension bridges with H-shaped simplified stiffening girder

Hiroshi KATSUCHI,Hitoshi YAMADA,Mayuko NISHIO,Yoko OKAZAKI

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 1,   Pages 93-102 doi: 10.1007/s11709-015-0311-0

Abstract: Wind-tunnel study on the improvement of aerodynamic stability of simplified suspension-bridge girderThe wind-tunnel test showed that an edge-girder type cross section exhibited large amplitude torsional

Keywords： suspension bridge     aerodynamics     simplified girder     wind-tunnel test    

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A simplified method for investigating the bending behavior of piles supporting embankments on soft ground

Frontiers of Structural and Civil Engineering   Pages 1021-1032 doi: 10.1007/s11709-023-0952-3

Abstract: In recent years, concrete and reinforced concrete piles have been widely used to stabilize soft ground under embankments. Previous research has shown that bending failure, particularly during rapid filling on soft ground, is the critical failure mode for pile-supported embankments. Here, we propose an efficient two-stage method that combines a test-verified soil deformation mechanism and Poulos’ solution for pile–soil interaction to investigate the bending behavior of piles supporting embankments on soft ground. The results reveal that there are three possible bending failure scenarios for such piles: at the interface between the soft and firm ground layers, at mid-depths of the fan zone, and at the boundary of the soil deformation mechanism. The location of the bending failure depends on the position and relative stiffness of the given pile. Furthermore, the effect of embedding a pile into a firm ground layer on the bending behavior was investigated. When the embedded length of a pile exceeded a critical value, the bending moment at the interface between the soft and firm ground layers reached a limiting value. In addition, floating piles that are not embedded exhibit an overturning pattern of movement in the soft ground layer, and a potential failure is located in the upper part of these piles.

Keywords： bending behavior     pile     embankment     soil−structure interaction     failure mode    

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Oscillation frequency of simplified arterial tubes

Hui AN, Fan HE, Lingxia XING, Xiaoyang LI

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3,   Pages 300-304 doi: 10.1007/s11465-009-0038-5

Abstract: To construct the spatial kinetic equation of an arterial tube and obtain its radial natural frequency, a linear-elastic and small deformation condition is assumed. The theoretical analysis is first presented and the finite element method is then used to numerically simulate the spatial kinematics. The results show that the first-order frequency is 15.8 Hz and the obtained exact analytical solutions agree well with numerical solutions, which proves that the theoretical analysis and numerical simulation are both correct.

Keywords： spatial kinematics     natural frequency     finite element method    

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Seismic performance of fabricated continuous girder bridge with grouting sleeve-prestressed tendon composite

Frontiers of Structural and Civil Engineering   Pages 827-854 doi: 10.1007/s11709-023-0954-1

Abstract: A numerical analysis of three types of continuous girder bridges was conducted with different piers:

Keywords： seismic performance     continuous girder bridge     grouting sleeve-prestressed tendon composite connections    

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A fast antibiotic detection method for simplified pretreatment through spectra-based machine learning

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 3, doi: 10.1007/s11783-021-1472-9

Abstract:

• A spectral machine learning approach is proposed for predicting mixed antibiotic.

Keywords： Antibiotic contamination     Spectral detection     Machine learning    

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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 eitherof the steel deviation cross beam during the tension process; measuring the deformation of the box girder

Keywords： prestressed concrete     box girder     monitoring     external tendons     strain     deflection    

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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 box girderheat transfer theory and finite element method (FEM), the heat flux of the surface of concrete box girderLast, 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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Fatigue stress monitoring and analyses for steel box girder of Runyang Suspension Bridge

WANG Ying, LI Zhaoxia, WU Baijian

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3,   Pages 197-204 doi: 10.1007/s11709-008-0038-2

Abstract: This paper aims to find out the strain history features of the girder components of Runyang Suspension

Keywords： bridge     monitoring location     RYSB     traffic loading     information    

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The curve adjustment method of girder segments without hangers for suspension bridge with three-spancontinuous stiffening girder

Qi Zhaochen,Tang Maolin,Cui Bing,Dong Meng,Wang Ming

Strategic Study of CAE 2013, Volume 15, Issue 8,   Pages 37-41

Abstract:

It is a difficult technical problem to make sure that the curve of girdersmoothly and the system transformation is successful and that the internal force keeps consistent with the girderThe system transformation methods at home and abroad of girder segments without hangers are discussedthis paper, and by taking a suspension bridge of over 1 000 m with three-span continuous stiffening girderas an example, the system transformation, curve adjustment and construction control of the girder segments

Keywords： suspension bridge     stiffening girder     region without hangers     curve    

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Vibration testing of a steel girder bridge using cabled and wireless sensors

Dapeng ZHU, Yang WANG, James BROWNJOHN

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 249-258 doi: 10.1007/s11709-011-0113-y

Abstract: Being able to significantly reduce system installation time and cost, wireless sensing technology has attracted much interest in the structural health monitoring (SHM) community. This paper reports the field application of a wireless sensing system on a 4-span highway bridge located in Wayne, New Jersey in the US. Bridge vibration due to traffic and ambient excitation is measured. To enhance the signal-to-noise ratio, a low-noise high-gain signal conditioning module is developed for the wireless sensing system. Nineteen wireless and nineteen cabled accelerometers are first installed along the sidewalk of two neighboring bridge spans. The performance of the wireless sensing system is compared with the high-precision cabled sensing system. In the next series of testing, 16 wireless accelerometers are installed under the deck of another bridge span, forming a 4 × 4 array. Operating deflection analysis is successfully conducted using the wireless measurement of traffic and ambient vibrations.

Keywords： wireless sensing     structural health monitoring (SHM)     signal conditioning     operating deflection analysis     ambient vibration    

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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-sectionsdisplacements with the spline function, the large deflection problem of the thin-walled box continuous girderand bottom plate should be taken to analyze the mechanics behavior of the thin-walled box continuous girderThe 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 girder

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

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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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Design of stiffening girder for Taizhou Bridge

Shan Hongwei,Ding Lei,Zhou Qing

Strategic Study of CAE 2012, Volume 14, Issue 5,   Pages 4-9

Abstract: The structural system of the stiffening girder is complicated and unique.Improvement and innovation have been made in detailed structure design of the stiffening girder basedstructural system, structure design, structure calculation, manufacturing and erection of the stiffening girder

Keywords： suspension bridge     stiffening girder     structural system     structure design    

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Analyzing the nonlinear vibrational wave differential equation for the simplified model of Tower Cranes

M.R. AKBARI,D.D. GANJI,A.R. AHMADI,Sayyid H. Hashemi KACHAPI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 1,   Pages 58-70 doi: 10.1007/s11465-014-0289-7

Abstract:

In the current paper, a simplified model of Tower Cranes has been presented in order to investigate

Keywords： Algebraic Method (AGM)     tower crane     oscillating system     angular frequency    

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Title Author Date Type Operation

Improvement of aerodynamic stability of suspension bridges with H-shaped simplified stiffening girder

Hiroshi KATSUCHI,Hitoshi YAMADA,Mayuko NISHIO,Yoko OKAZAKI

Journal Article

A simplified method for investigating the bending behavior of piles supporting embankments on soft ground

Journal Article

Oscillation frequency of simplified arterial tubes

Hui AN, Fan HE, Lingxia XING, Xiaoyang LI

Journal Article

Seismic performance of fabricated continuous girder bridge with grouting sleeve-prestressed tendon composite

Journal Article

A fast antibiotic detection method for simplified pretreatment through spectra-based machine learning

Journal Article

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

Ali Fadhil NASER, Zonglin WANG

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

Fatigue stress monitoring and analyses for steel box girder of Runyang Suspension Bridge

WANG Ying, LI Zhaoxia, WU Baijian

Journal Article

The curve adjustment method of girder segments without hangers for suspension bridge with three-spancontinuous stiffening girder

Qi Zhaochen,Tang Maolin,Cui Bing,Dong Meng,Wang Ming

Journal Article

Vibration testing of a steel girder bridge using cabled and wireless sensors

Dapeng ZHU, Yang WANG, James BROWNJOHN

Journal Article

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

Yuji CHEN, Qizhi LUO,

Journal Article

Research of steel box girder dehumidification in Taizhou Bridge

Li Lin and Xu Jun

Journal Article

Design of stiffening girder for Taizhou Bridge

Shan Hongwei,Ding Lei,Zhou Qing

Journal Article

Analyzing the nonlinear vibrational wave differential equation for the simplified model of Tower Cranes

M.R. AKBARI,D.D. GANJI,A.R. AHMADI,Sayyid H. Hashemi KACHAPI

Journal Article