Dynamic analysis of a large span specially shaped hybrid girder bridge with concrete-filled steel tube arches

Li, Yan; Cai, C.S.; Liu, Yang; Chen, Yanjiang; Liu, Jiafeng

doi:10.1016/j.engstruct.2015.10.026

Cited by 53 publications

(40 citation statements)

References 37 publications

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“…For each speed the five values correspond to the five peaks (A, B, C, D, E) in the radar plots. The measured IM values can appear rather scattered, but this is in agreement with the experimental results reported the literature [6,10,19,29].…”

Section: Kaflan-kuh Bridgesupporting

confidence: 91%

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Experimental Dynamic Impact Factor Assessment of Railway Bridges through a Radar Interferometer

Pieraccini

Miccinesi

Nejad³

et al. 2019

Remote Sensing

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The dynamic impact factor (IM) is a widely accepted parameter to account for the effect of vehicles on bridges. An accurate evaluation of this IM is of paramount importance in bridge engineering, both for designing safe and economical new bridges, and for the assessment of the existing ones. At the state of the art, the current procedure for the experimental assessment of the IM of a bridge relies upon the deployment of a sensor network. The aim of this article is to propose the use of a remote sensor, the interferometric radar, for assessing the IM without the deployment of any sensor on the bridge, with evident advantages in terms of cost, time and safety of the workers. Two different case studies of bridges in Northern Iran are reported. In both cases the interferometric radar has been demonstrated an effective and reliable measurement equipment for this kind of in-field assessment.

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Section: Kaflan-kuh Bridgesupporting

confidence: 91%

“…The (conservative) formula of the American Association of State Highway and Transportation Officials (AASHTO) for calculating the dynamic loading of arch bridges [29] gives IM = 0.195, that is consistent with the measured values. As expected, the values of IM 2 are a bit higher than the IM calculated with the most common definition.…”

Section: Kaflan-kuh Bridgesupporting

confidence: 78%

Experimental Dynamic Impact Factor Assessment of Railway Bridges through a Radar Interferometer

Pieraccini

Miccinesi

Nejad³

et al. 2019

Remote Sensing

View full text Add to dashboard Cite

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“…Therefore, this structure has plenty of virtues in terms of greater carrying capacity, higher lateral stiffness, better ductility properties, much more efficient construction and easier fabricated construction [3][4][5][6][7]. Based on the above advantages, CFT structures have been widely used in industrial plants, long-span bridges, high-rise buildings and underground structures in recent years [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Research on the Bond Behavior of Preplaced Aggregate Concrete-Filled Steel Tube Columns

Zhou

et al. 2020

Materials

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In order to investigate the bond behavior of preplaced aggregate concrete-filled steel tube (CFT-PAC) columns and the difference of bond behavior between CFT-PAC columns and normal concrete-filled steel tube (CFT-NC) columns, a total of 11 columns were prepared and the push-out tests were conducted. The experimental parameters included the type of concrete (preplaced aggregate concrete and normal concrete), concrete strength (C40, C50 and C60), cross-section dimension (D = 219 mm, 299 mm and 351 mm) and the thickness of steel tube (t = 6 mm and 8 mm). The results indicated that the CTF-PAC columns had a similar load-slip curves with CFT-NC columns. The bond stresses of the CFT-PAC columns were higher than that of the PAC-NC columns at the same concrete strength. Increasing compressive strength of PAC increased the critical bond strength and bond strength of CFT-PAC columns. With an increase of the L/D ratio, both of the slip corresponding to peak load and bond strength of CFT-PAC columns exhibited an increasing trend. A rise in the D/t ratio led to a decrease in the bond stress of CFT-PAC columns and an increase in slip corresponding to the peak load of CFT-PAC columns. The proposed bond stress–slip relationship model considerably matched the bond stress–slip relationship of CFT-PAC columns.

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“…Concrete-filled steel tube (CFST) structures with virtues of higher bearing capacity [1], greater ductility property [2][3][4], easier construction [5], better seismic performance [6,7] and much more excellent fire-resistant performance [8,9] are widely utilized in high-rise buildings, industrial plants, bridges and underground structures [10][11][12][13][14] recently. With application and popularization of CFST structures, significant economic and social benefits are obtained and a series of technical problems have been solved [2][3][4][5][6][7]15].…”

Section: Introductionmentioning

confidence: 99%

Investigation and Application of a New Low-Carbon Material (Preplaced Aggregate Concrete) in Concrete-Filled Steel Tube Stub Columns

Zhou

2020

Sustainability

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As a new low-carbon material, development of preplaced aggregate concrete (PAC) will achieve huge economic and social benefits. However, few existing research is focused on applying PAC in structural elements. This paper is attempt to apply PAC in concrete-filled steel tube (CFST) stub columns and the bearing behaviors of PAC-filled steel tube (PACFST) stub columns under axial compression are also experimentally investigated. The results indicate that the failure modes of PACFST stub columns are all drum-like failure mode which are analogous to that of CFST stub columns. The axial load-axial strain curves of PACFST stub columns can be roughly divided into elastic stage, elastic-plastic stage and plastic stage. Under the similar ultimate load, the ultimate strains are a bit smaller than that of CFST stub columns. Comparison of the results of ultimate load of PACFST stub columns calculated using the existing relevant standards for the bearing capacity calculation methods of CFST stub columns, GB 50936 and JGJ 138 are much more suitable to assess the bearing capacity of PACFST stub columns. Approximately 15%~20% saving in cement consumption will be accomplished with popularization and utilization of PACFST stub columns as compared with CFST stub columns.PAC has higher coarse aggregate content and lower cement content at the similar compressive strength. Based on the above features, PAC has plenty of advantages, such as saving cement, reducing concrete shrinkage, increasing concrete stiffness and so on [22][23][24][25].With rapid development of infrastructures, the consumption of building materials increases fastly. A series of environmental issues caused by production of building materials are becoming more and more prominent. How to reduce the consumption of building materials has become one of the problems that needs to be solved urgently in construction industry. On the basis of the characteristic of PAC, applying PAC in structures may be one of the effective ways to cut down the consumption of cement in structures. Despite some existing literatures report that the PAC has been already used in underwater construction, massive concrete structures, concrete track construction and nuclear power plant structures [26][27][28], there is still a lack of investigation on application of PAC in widely used structures, such as building and bridge. As a new type of structural forms, CFST structures are widely used in buildings and bridges in recent years. Combined with the characteristic of PAC, using PAC to replace NC in preparation of CFST structural members may be benefit to reduce the consumption of cement in core concrete and will achieve a number of economic and social benefits. It will be a positive attempt to promote energy conservation and emission reduction in the construction industry. However, very few existing research is focused on this field, the most relevant research should be reported by Lv et al. [29], in which the bond behavior of PAC-filled steel tube columns has been studied only. It is still difficult ...

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Dynamic analysis of a large span specially shaped hybrid girder bridge with concrete-filled steel tube arches

Cited by 53 publications

References 37 publications

Experimental Dynamic Impact Factor Assessment of Railway Bridges through a Radar Interferometer

Experimental Dynamic Impact Factor Assessment of Railway Bridges through a Radar Interferometer

Research on the Bond Behavior of Preplaced Aggregate Concrete-Filled Steel Tube Columns

Investigation and Application of a New Low-Carbon Material (Preplaced Aggregate Concrete) in Concrete-Filled Steel Tube Stub Columns

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