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Torsional vibrations of a cylindrical foundation embedded in a saturated poroelastic half-space

Dazhi WU,Lu YU

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 2,   Pages 194-202 doi: 10.1007/s11709-015-0292-z

Abstract: Considering the interactions between an embedded foundation and saturated soil, the torsional vibrations of a cylindrical foundation embedded in a saturated poroelastic medium are analyzed in this paper. Both a rigid foundation and an elastic foundation are considered. Assuming both the side surface and the bottom surface of the foundation are perfectly bonded to soil, the reaction torques that the side soil and bottom soil acting on the foundation can be gained from basic dynamic equations of the poroelastic medium. According to the dynamic equilibrium equations of a foundation under harmonic torque, the torsional vibrations of an embedded cylindrical foundation are presented. Besides, the angular amplitude of the foundation, the equivalent stiffness and damping coefficients of the soil are expressed explicitly. Selected examples are presented to investigate the influence of relevant parameters on the torsional vibrations.

Keywords： embedded foundation     saturated soil     rigid foundation     elastic foundation     torsional vibration    

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What should be done for the “second half” of China’s urbanization?

Chunfei WU, Xiaojiang LI, Pengfei LI

Frontiers of Engineering Management 2018, Volume 5, Issue 2,   Pages 276-277 doi: 10.15302/J-FEM-2017106

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Estimation of photolysis half-lives of dyes in a continuous-flow system with the aid of quantitative

Davoud BEIKNEJAD,Mohammad Javad CHAICHI

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 5,   Pages 683-692 doi: 10.1007/s11783-014-0680-y

Abstract: In this paper the photolysis half-lives of the model dyes in water solutions and under ultraviolet (UVmultiple linear regression (MLR) and partial least squares (PLS) for the prediction of the photolysis half-lifeThe QSPR results obtained with these models show that in MLR-derived model, photolysis half-lives of

Keywords： dye     photolysis half-life     quantitative structure-property relationship     continuous-flow     stepwise multiple    

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A new variable-mode control strategy for LLC resonant converters operating in a wide input voltage range Article

Hui-pin LIN,Xiao-guang JIN,Liang XIE,Jin HU,Zheng-yu LU

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 3,   Pages 410-422 doi: 10.1631/FITEE.1600029

Abstract: This control strategy incorporates advantages from full-bridge LLC resonant converters, half-bridge LLCWhen the input voltage is very low, it works in a full-bridge circuit and variable frequency mode (FB_VFWhen the input voltage rises to a certain level, it shifts to a full-bridge circuit and phase-shiftingWhen the input voltage further increases, it shifts into a half-bridge circuit and variable frequency

Keywords： LLC     Full bridge     Half bridge     Variable frequency     Phase shift     Wide input voltage range    

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Hybrid full-/half-duplex cellular networks: user admission and power control None

Lu CHEN, Ding-zhu WEN, Cai-jun ZHONG, Guan-ding YU

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 3,   Pages 379-387 doi: 10.1631/FITEE.1700027

Abstract: We consider a single-cell network with a hybrid full-/half-duplex base station.

Keywords： Full-duplex     Half-duplex     User admission     Power control    

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descriptors into quantitative structure-property relationship models for prediction of the photolysis half-life

Yueping BAO, Qiuying HUANG, Wenlong WANG, Jiangjie XU, Fan JIANG, Chenghong FENG

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 4,   Pages 505-511 doi: 10.1007/s11783-011-0318-2

Abstract: Quantitative structure-property relationship (QSPR) models were developed for prediction of photolysis half-life

Keywords： photolysis     polychlorinated biphenyls (PCBs)     quantitative structure-property relationships (QSPRs)     quantum chemical descriptors    

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A novel ternary half adder and multiplier based on carbon nanotube field effect transistors Article

Sepehr TABRIZCHI,Nooshin AZIMI,Keivan NAVI

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 3,   Pages 423-433 doi: 10.1631/FITEE.1500366

Abstract: In this paper, we design a new half adder and a new multiplier by nanotechnology using a ternary logic

Keywords： CNTFET-based design     Ternary     Half adder     Multiplier     Multiple-valued logic (MVL)    

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Promoting Si-graphite composite anodes with SWCNT additives for half and NCM811 full lithium ion batteries

Jingning SHAN, Xiaofang YANG, Chao YAN, Yiguang JU, Lin CHEN, Fang ZHAO

Frontiers in Energy 2019, Volume 13, Issue 4,   Pages 626-635 doi: 10.1007/s11708-019-0650-y

Abstract: nanotube (SWCNT) additives were formulated into µm-Si-graphite composite electrodes and tested in both halfC during the first charge-discharge cycle, and 91% capacity retention after 50 cycles (0.5 C) in a halfnickel-NCM811 cathodes and µm-Si-graphite composite anodes were evaluated for the consistence between half

Keywords： lithium-ion battery     Si anode     Si-graphite composite     single wall carbon nanotube (SWCNT)     NCM811    

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On subsurface box-shaped lined tunnel under incident SH-wave propagation

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 948-960 doi: 10.1007/s11709-021-0740-x

Abstract: In this paper, a half-plane time-domain boundary element method is applied to obtain the seismic ground

Keywords： box-lined tunnel     half-plane BEM     surface response     SH-wave     time-domain    

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Major bridge development in Hong Kong, China—past, present and future

Michael CH HUI, Doris YAU

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 4,   Pages 405-414 doi: 10.1007/s11709-011-0136-4

Abstract: The first “modern” type of vehicular bridge was built in Hong Kong China in the 1920s.Four of these bridges, including the Tsing Ma Bridge, Kap Shui Mun Bridge, Ting Kau Bridge, and the cable-stayedbridge on the Hong Kong- Shenzhen Western Corridor, are considered to be major bridges supported byAt the same time, the Hong Kong-Zhuhai-Macao Bridge will be in its detailed design stage soon.While efforts have been made by bridge builders to construct these giant structures, the upkeeping of

Keywords： Tsing Ma Bridge     Kap Shui Mun Bridge     Ting Kau Bridge     Stonecutters Bridge     Hong Kong-Zhuhai-Macao Bridge    

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Pressure drop analysis on the positive half-cell of a cerium redox flow battery using computational fluid

Fernando F. Rivera, Berenice Miranda-Alcántara, Germán Orozco, Carlos Ponce de León, Luis F. Arenas

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 399-409 doi: 10.1007/s11705-020-1934-9

Abstract: fluid velocities taking place in a rectangular channel electrochemical flow cell used as the positive half-cell

Keywords： CFD simulation     porous media     porous electrode     pressure drop     redox flow battery    

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Precast steel–UHPC lightweight composite bridge for accelerated bridge construction

Shuwen DENG, Xudong SHAO, Xudong ZHAO, Yang WANG, Yan WANG

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2,   Pages 364-377 doi: 10.1007/s11709-021-0702-3

Abstract: In this study, a fully precast steel–ultrahigh performance concrete (UHPC) lightweight composite bridge(LWCB) was proposed based on Mapu Bridge, aiming at accelerating construction in bridge engineering.Finite element analyses of Mapu Bridge showed that the nominal stress of critical sections could meet

Keywords： accelerated bridge construction     ultrahigh-performance concrete     steel–UHPC composite bridge     UHPC girder-to-girder    

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Vehicle-bridge coupled vibrations in different types of cable stayed bridges

Lingbo WANG,Peiwen JIANG,Zhentao HUI,Yinping MA,Kai LIU,Xin KANG

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 1,   Pages 81-92 doi: 10.1007/s11709-015-0306-x

Abstract: Numerical analyses of the coupled vibrations of vehicle-bridge system and the effects of different typesThe bridge model and vehicle model were independently built which have no internal relationship in theimposed on the vehicle and bridge models during the numerical analysis.cable stayed bridges (both the floating system and half floating system) under traffic flows were presentedto cause vehicle-bridge resonance.

Keywords： vehicle-bridge coupled vibration     cable stayed bridge     resonances of vehicle-bridge system    

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Pretest analysis of shake table response of a two-span steel girder bridge incorporating acceleratedbridge construction connections

Elmira SHOUSHTARI, M. Saiid SAIIDI, Ahmad ITANI, Mohamed A. MOUSTAFA

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 1,   Pages 169-184 doi: 10.1007/s11709-019-0590-y

Abstract: presents pretest analysis of a shake table test model of a 0.35-scale, two-span, steel plate girder bridgeThe objective of pretest analysis was to obtain an insight on the seismic response of the bridge modelThe bridge included seat type abutments, full-depth precast deck panels, and a two-column bent in whichSix accelerated bridge construction connections were incorporated in the bridge model.Using experimental fragility curves developed for RC bridge columns, it was predicted that there was

Keywords： shake table test     accelerated bridge construction     steel girder bridge     OpenSEES     UHPC     simple for dead continuous    

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State-of-the-art of long-span bridge engineering in China

XIANG Haifan, GE Yaojun

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 4,   Pages 379-388 doi: 10.1007/s11709-007-0051-x

Abstract: This paper introduces the state-of-the-art of longspan bridge engineering in China with emphases on recentlong-span bridge projects, bridge deck configuration and material, design codes of long-span bridges

Keywords： bridge engineering     state-of-the-art     long-span bridge     configuration     improvement    

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Title Author Date Type Operation

Torsional vibrations of a cylindrical foundation embedded in a saturated poroelastic half-space

Dazhi WU,Lu YU

Journal Article

What should be done for the “second half” of China’s urbanization?

Chunfei WU, Xiaojiang LI, Pengfei LI

Journal Article

Estimation of photolysis half-lives of dyes in a continuous-flow system with the aid of quantitative

Davoud BEIKNEJAD,Mohammad Javad CHAICHI

Journal Article

A new variable-mode control strategy for LLC resonant converters operating in a wide input voltage range

Hui-pin LIN,Xiao-guang JIN,Liang XIE,Jin HU,Zheng-yu LU

Journal Article

Hybrid full-/half-duplex cellular networks: user admission and power control

Lu CHEN, Ding-zhu WEN, Cai-jun ZHONG, Guan-ding YU

Journal Article

descriptors into quantitative structure-property relationship models for prediction of the photolysis half-life

Yueping BAO, Qiuying HUANG, Wenlong WANG, Jiangjie XU, Fan JIANG, Chenghong FENG

Journal Article

A novel ternary half adder and multiplier based on carbon nanotube field effect transistors

Sepehr TABRIZCHI,Nooshin AZIMI,Keivan NAVI

Journal Article

Promoting Si-graphite composite anodes with SWCNT additives for half and NCM811 full lithium ion batteries

Jingning SHAN, Xiaofang YANG, Chao YAN, Yiguang JU, Lin CHEN, Fang ZHAO

Journal Article

On subsurface box-shaped lined tunnel under incident SH-wave propagation

Journal Article

Major bridge development in Hong Kong, China—past, present and future

Michael CH HUI, Doris YAU

Journal Article

Pressure drop analysis on the positive half-cell of a cerium redox flow battery using computational fluid

Fernando F. Rivera, Berenice Miranda-Alcántara, Germán Orozco, Carlos Ponce de León, Luis F. Arenas

Journal Article

Precast steel–UHPC lightweight composite bridge for accelerated bridge construction

Shuwen DENG, Xudong SHAO, Xudong ZHAO, Yang WANG, Yan WANG

Journal Article

Vehicle-bridge coupled vibrations in different types of cable stayed bridges

Lingbo WANG,Peiwen JIANG,Zhentao HUI,Yinping MA,Kai LIU,Xin KANG

Journal Article

Pretest analysis of shake table response of a two-span steel girder bridge incorporating acceleratedbridge construction connections

Elmira SHOUSHTARI, M. Saiid SAIIDI, Ahmad ITANI, Mohamed A. MOUSTAFA

Journal Article

State-of-the-art of long-span bridge engineering in China

XIANG Haifan, GE Yaojun

Journal Article