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Probabilistic seismic response and uncertainty analysis of continuous bridges under near-fault ground

Hai-Bin MA, Wei-Dong ZHUO, Davide LAVORATO, Camillo NUTI, Gabriele FIORENTINO, Giuseppe Carlo MARANO, Rita GRECO, Bruno BRISEGHELLA

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1510-1519 doi: 10.1007/s11709-019-0577-8

Abstract: This paper mainly focuses on the effects of near-fault pulse-like ground motions and the uncertaintiesseries of nonlinear dynamic time-history analysis of the bridge at three different site conditions under near-faultratio of the bridge column as the EDP parameter, a probabilistic seismic demand model is developed for near-faultquantified by the “swing” base on the specific distribution range of each uncertainty parameter both in near-faultstrength are the main uncertainty parameters during bridge modeling, which should be considered both in near-fault

Keywords： continuous bridge     probabilistic seismic demand model     Intensity Measure     near-fault     uncertainty    

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Seismic responses and resilience of novel SMA-based self-centring eccentrically braced frames under near-fault

Zhi-Peng CHEN; Songye ZHU

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 8,   Pages 962-975 doi: 10.1007/s11709-022-0873-6

Abstract: Then twenty-four near-fault ground motions are used to examine the seismic responses of both EBFs under

Keywords： shape memory alloy     eccentrically braced frame     self-centring     fragility     loss function     resilience    

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Computational studies on the seismic response of the State Route 99 bridge in Seattle with SMA/ECC plastic hinges

Jiping GE, M. Saiid SAIIDI, Sebastian VARELA

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 149-164 doi: 10.1007/s11709-018-0482-6

Abstract: This paper reports a computational study on the seismic response of a three-span highway bridge system incorporating conventional and novel substructure details for improved seismic performance. The bridge has three continuous spans supported by two single-column piers and integral abutments founded on drilled shafts. It will be the first full-scale highway bridge to use superelastic shape memory alloy bars (SMA) and engineered cementitious composite (ECC) to mitigate column plastic hinge damage and minimize residual displacements after a strong earthquake. A three-dimensional computational model capturing the nonlinear constitutive response of the novel materials and the effects of dynamic soil-structure interaction was developed to assess the seismic response of the bridge in finite-element software OpenSees. Two versions of the same bridge were analyzed and compared, one with conventional cast-in-place reinforced concrete columns, and the other with top plastic hinges incorporating Nickel-Titanium (NiTi) SMA reinforcing bars and ECC. The novel SMA/ECC plastic hinges were found to substantially reduce damage and post-earthquake residual displacements in the bridge substructure, but led to larger maximum drifts relative to the bridge with conventional reinforced concrete plastic hinges. The analysis results suggested that the novel plastic hinges could lead to improved post-earthquake serviceability of bridges after intense earthquakes.

Keywords： seismic design     analytical simulation     near-fault earthquakes     shape memory alloy     engineered cementitious    

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Parametric study on the Multangular-Pyramid Concave Friction System (MPCFS) for seismic isolation

Wei XIONG, Shan-Jun ZHANG, Li-Zhong JIANG, Yao-Zhuang LI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 5,   Pages 1152-1165 doi: 10.1007/s11709-020-0659-7

Abstract: such as increased uplift stability, improved self-centering capacity, non-resonance when subjected to near-faultwell-established and matured isolation techniques, may be a promising tool for seismic isolation of near-fault

Keywords： seismic isolation     variable frequency     near-fault earthquake     numerical study     Multangular-Pyramid Concave    

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Study on the Path of “Near-zero Emission” Coal-based Clean Energy Ecosystem Development

Zhang Yu-zhuo

Frontiers of Engineering Management 2014, Volume 1, Issue 1,   Pages 37-41 doi: 10.15302/J-FEM-2014007

Abstract: Developing a "near-zero emission" coal-based clean energy ecosystem bears great significance for thearticle delves into the development strategy, implementation pathways and key priorities of China's "near-zero

Keywords： near-zero emission     clean energy ecosystem     study on the path    

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Research and industrialization of near-net rolling technology used in shaft parts

Zhenghuan HU, Baoyu WANG, Zhenhua ZHENG

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 17-24 doi: 10.1007/s11465-018-0480-3

Abstract:

Shaft part rolling is an efficient and green near-net shaping technology offering many advantages,

Keywords： cross wedge rolling     skew rolling     near-net rolling     shaft part    

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Special issue: Near-net shaping technology

Dequn LI, Dongming GUO, Qingxue HUANG, Yanchun LOU

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 1-2 doi: 10.1007/s11465-018-0497-7

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Determining casting defects in near-net shape casting aluminum parts by computed tomography

Jiehua LI, Bernd OBERDORFER, Daniel HABE, Peter SCHUMACHER

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 48-52 doi: 10.1007/s11465-018-0493-y

Abstract:

Three types of near-net shape casting aluminum parts were investigated by computed tomography to determinethird part, and this absence of defects indicates that semi-solid casting could produce high-quality near-netinvestigation demonstrated that computed tomography is an efficient method to determine casting defects in near-net

Keywords： near-net shape casting     aluminum parts     casting defects     low pressure die casting     die casting     semi-solid    

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Chemisorption solid materials for hydrogen storage near ambient temperature: a review

Yiheng ZHANG, Shaofei WU, Liwei WANG, Xuefeng ZHANG

Frontiers in Energy 2023, Volume 17, Issue 1,   Pages 72-101 doi: 10.1007/s11708-022-0835-7

Abstract: chemisorption technologies for hydrogen storage, especially high-efficiency hydrogen storage of fuel cells in nearHowever, there are several challenges to be solved at near ambient temperature, i.e., unclear hydrogenreview, the characteristics and modification methods of chemisorption hydrogen storage materials at near

Keywords： hydrogen storage capacity     chemisorption     near-ambient-temperature     modification methods     alloy hydrides    

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Factors influencing near infrared spectroscopy analysis of agro-products: a review

Xiao XU, Lijuan XIE, Yibin YING

Frontiers of Agricultural Science and Engineering 2019, Volume 6, Issue 2,   Pages 105-115 doi: 10.15302/J-FASE-2019255

Abstract:

The near infrared (NIR) spectroscopy technique has wide applications in agriculture with the advantages

Keywords： agro-product     error source     influence factor     near infrared spectroscopy    

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Implementation of sinh method in integration space for boundary integrals with near singularity in potential

Guizhong XIE,Dehai ZHANG,Jianming ZHANG,Fannian MENG,Wenliao DU,Xiaoyu WEN

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4,   Pages 412-422 doi: 10.1007/s11465-016-0396-8

Abstract: However, boundary integrals with near singularity need to be calculated accurately and efficiently toequation if the location of the projection point is outside the element, where boundary integrals with nearResults demonstrate that our method is effective for regularizing the boundary integrals with near singularity

Keywords： computer aided engineering (CAE)     boundary element method (BEM)     near singularity     sinh method     coordinate    

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Three-dimensional finite difference analysis of shallow sprayed concrete tunnels crossing a reverse faultor a normal fault: A parametric study

Masoud RANJBARNIA, Milad ZAHERI, Daniel DIAS

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 4,   Pages 998-1011 doi: 10.1007/s11709-020-0621-8

Abstract: In this paper, the effects of a reverse and a normal fault movement on a transversely crossing shallowas the sprayed concrete thickness, the geo-mechanical properties of soil, the tunnel depth, and the fault

Keywords： urban tunnel     sprayed concrete     reverse fault     normal fault     finite difference analysis    

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Modeling of oil near-infrared spectroscopy based on similarity and transfer learning algorithm

Yifei Wang, Kai Wang, Zhao Zhou, Wenli Du

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 3,   Pages 599-607 doi: 10.1007/s11705-019-1807-2

Abstract: Near-infrared spectroscopy mainly reflects the frequency-doubled and total-frequency absorption informationof hydrogen-containing groups (O‒H, C‒H, N‒H, S‒H) in organic molecules for near-infrared lights withIn order to achieve rapid modeling of near-infrared spectroscopy and based on historical data of different

Keywords： near-infrared spectroscopy     transfer learning     similarity     modeling    

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Stress field near circular-arc interface crack tip based on electric saturation concept

Longchao DAI, Xinwei WANG

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3,   Pages 320-325 doi: 10.1007/s11465-009-0042-9

Abstract: Within the framework of nonlinear electroelasticity, the anti-plane problem of a circular-arc interfacial crack between a circular piezoelectric inhomogeneity and an infinite piezoelectric matrix subjected to a far-field uniform loading is investigated by an electrical strip saturation model, the complex variable method, and the method of analytical continuation. Explicit closed form expressions for the complex potentials in both the matrix and the inclusion, and the stress intensity factor at the crack tip are presented. Comparison with some related solutions based on the linear electroelastic theory shows the validity of the present solutions

Keywords： piezoelectric material     arc crack     strip saturation     stress intensity factor    

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Basic research on machinery fault diagnostics: Past, present, and future trends

Xuefeng CHEN, Shibin WANG, Baijie QIAO, Qiang CHEN

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 2,   Pages 264-291 doi: 10.1007/s11465-018-0472-3

Abstract:

Machinery fault diagnosis has progressed over the past decades with the evolution of machineries inHigh-value machineries require condition monitoring and fault diagnosis to guarantee their designed functionsResearch on machinery Fault diagnostics has grown rapidly in recent years.The review discusses the special contributions of Chinese scholars to machinery fault diagnostics.On the basis of the review of basic theory of machinery fault diagnosis and its practical applications

Keywords： fault diagnosis     fault mechanism     feature extraction     signal processing     intelligent diagnostics    

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Title Author Date Type Operation

Probabilistic seismic response and uncertainty analysis of continuous bridges under near-fault ground

Hai-Bin MA, Wei-Dong ZHUO, Davide LAVORATO, Camillo NUTI, Gabriele FIORENTINO, Giuseppe Carlo MARANO, Rita GRECO, Bruno BRISEGHELLA

Journal Article

Seismic responses and resilience of novel SMA-based self-centring eccentrically braced frames under near-fault

Zhi-Peng CHEN; Songye ZHU

Journal Article

Computational studies on the seismic response of the State Route 99 bridge in Seattle with SMA/ECC plastic hinges

Jiping GE, M. Saiid SAIIDI, Sebastian VARELA

Journal Article

Parametric study on the Multangular-Pyramid Concave Friction System (MPCFS) for seismic isolation

Wei XIONG, Shan-Jun ZHANG, Li-Zhong JIANG, Yao-Zhuang LI

Journal Article

Study on the Path of “Near-zero Emission” Coal-based Clean Energy Ecosystem Development

Zhang Yu-zhuo

Journal Article

Research and industrialization of near-net rolling technology used in shaft parts

Zhenghuan HU, Baoyu WANG, Zhenhua ZHENG

Journal Article

Special issue: Near-net shaping technology

Dequn LI, Dongming GUO, Qingxue HUANG, Yanchun LOU

Journal Article

Determining casting defects in near-net shape casting aluminum parts by computed tomography

Jiehua LI, Bernd OBERDORFER, Daniel HABE, Peter SCHUMACHER

Journal Article

Chemisorption solid materials for hydrogen storage near ambient temperature: a review

Yiheng ZHANG, Shaofei WU, Liwei WANG, Xuefeng ZHANG

Journal Article

Factors influencing near infrared spectroscopy analysis of agro-products: a review

Xiao XU, Lijuan XIE, Yibin YING

Journal Article

Implementation of sinh method in integration space for boundary integrals with near singularity in potential

Guizhong XIE,Dehai ZHANG,Jianming ZHANG,Fannian MENG,Wenliao DU,Xiaoyu WEN

Journal Article

Three-dimensional finite difference analysis of shallow sprayed concrete tunnels crossing a reverse faultor a normal fault: A parametric study

Masoud RANJBARNIA, Milad ZAHERI, Daniel DIAS

Journal Article

Modeling of oil near-infrared spectroscopy based on similarity and transfer learning algorithm

Yifei Wang, Kai Wang, Zhao Zhou, Wenli Du

Journal Article

Stress field near circular-arc interface crack tip based on electric saturation concept

Longchao DAI, Xinwei WANG

Journal Article

Basic research on machinery fault diagnostics: Past, present, and future trends

Xuefeng CHEN, Shibin WANG, Baijie QIAO, Qiang CHEN

Journal Article