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Numerical investigation of the ultimate lateral resistance of piles in soft clay

Konstantinos P. TZIVAKOS,Michael J. KAVVADAS

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 2, Pages 194-200 doi: 10.1007/s11709-014-0251-0

Abstract: The paper presents a numerical study on the undrained lateral response of a single, free-head, reinforced concrete pile in soft clays. Soil conditions simulating normally consolidated clays are examined—undrained shear strength increasing with depth—and the pile-soil interaction under static lateral loading is analyzed. The nonlinear ? curves proposed in literature for soft clays are imported into a beam-on-nonlinear-Winkler-foundation simulation in order to predict the pile head lateral load—displacement curve and the distribution of the horizontal displacement and bending moment along the pile. The striking differences among these methods require further investigation via 3D finite element analyses. The determination of the ultimate soil resistance from the results of the finite element analyses aims at providing the estimation of a range of values for the ultimate soil resistance coefficient with depth and the comparison of the derived values to the corresponding ones proposed by existing methodologies.

Keywords： laterally loaded pile soft clay p?y curves finite element method (FEM)

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PM-support interfacial effect and oxygen mobility in Pt, Pd or Rh-loaded (Ce,Zr,La)O catalysts

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1369-z

Abstract:

• Pt/CZL exhibits the optimum catalytic performance for HC and NO_x elimination.

Keywords： Precious metal-loaded (Ce Zr La)O₂ catalysts Oxygen mobility Catalytic performance

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The cavitation erosion damage process of dynamically loaded journal bearings

MA Yan-yan, CHENG Xian-hua

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 4, Pages 461-464 doi: 10.1007/s11465-006-0059-2

Abstract: The cavitation damage model was built using finite element analysis software MSC.Marc. This paper attempted to numerically analyze the action process based on damage mechanics when a jet created by bubble collapse acted on the bearing surface in the process of cavitation erosion. The numerical results show that the values of equivalent plastic strain and void volume fraction increase with time. The values of damage scalar are higher on the bearing surface and subsurface, and decrease when it approaches the interface of overlay and nickel layer. The strain history and damage evolvement of bearing material acted on by jet impact load can be calculated efficiently using the proposed method, which develops a new method of analyzing cavitation erosion failure of the bearing surface.

Keywords： bearing fraction increase collapse process evolvement

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Preparation of a Pb loaded gas diffusion electrode and its application to CO

Ang LI, Hua WANG, Jinyu HAN, Li LIU

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4, Pages 381-388 doi: 10.1007/s11705-012-1216-2

Abstract: A Pb loaded gas diffusion electrode was fabricated and used for the electroreduction of CO to formic

Keywords： electroreduction carbon dioxide lead catalyst gas diffusion electrode formic acid

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Selective targeted adsorption and inactivation of antibiotic-resistant bacteria by Cr-loaded mixed metal

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 6, doi: 10.1007/s11783-021-1502-7

Abstract:

• LDHs and MMOs was synthesized by ultrasound-assisted one-step co-precipitation.

Keywords： Heavy metal adsorption Magnetic hydrotalcite ARBs removal Cr(VI)-MMOs combined antibacterial activity

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Metal-organic framework loaded manganese oxides as efficient catalysts for low-temperature selective

Minhua Zhang, Baojuan Huang, Haoxi Jiang, Yifei Chen

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 4, Pages 594-602 doi: 10.1007/s11705-017-1668-5

Abstract: A mild deposition method was used to fabricate Mn-based catalysts on a UiO-66 carrier for the selective catalytic reduction of NO by NH (NH -SCR). The catalyst with 8.5 wt-% MnO loading had the highest catalytic activity for NH -SCR with a wide temperature window (100–290 °C) for 90% NO conversion. Characterization of the prepared MnO /UiO-66 catalysts showed that the catalysts had the crystal structure and porosity of the UiO-66 carrier and that the manganese particles were well-distributed on the surface of the catalyst. X-ray photoelectron spectroscopy analysis showed that there are strong interactions between the MnO and the Zr oxide secondary building units of the UiO-66 which has a positive effect on the catalytic activity. The 8.5 wt-% MnO catalyst maintained excellent activity during a 24-h stability test and exhibited good resistance to SO poisoning.

Keywords： metal-organic framework selective catalytic reduction manganese oxides deNO_x SO₂ resistance

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Long acting carmustine loaded natural extracellular matrix hydrogel for inhibition of glioblastoma recurrence

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 4, Pages 536-545 doi: 10.1007/s11705-021-2067-5

Abstract: the ratio of lactic acid groups to glycolic acid groups is 75/25) nanoparticles were simultaneously loaded

Keywords： BCNU glioblastoma recurrence tumor resection nanoparticles hydrogel

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Application of high-turning bowed compressor stator to redesign of highly loaded fan stage

LI Shaobin, SU Jiexian, WANG Zhongqi

Frontiers in Energy 2008, Volume 2, Issue 4, Pages 534-540 doi: 10.1007/s11708-008-0066-6

Abstract: A redesign of a highly loaded fan stage by using high-turning bowed compressor stator was conducted.The original tandem stator was replaced by the highly loaded bowed stator which was applicable to highlyThe results show that the highly loaded bowed stator can be used not only to improve the structure andIt is believed that the highly loaded bowed stator can advance the design of high-performance compressor

Keywords： off-design different numerical contouring technique high-performance compressor

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Cooling performance of grid-sheets for highly loaded ultra-supercritical steam turbines

Dieter BOHN , Robert KREWINKEL , Shuqing TIAN ,

Frontiers in Energy 2009, Volume 3, Issue 3, Pages 313-320 doi: 10.1007/s11708-009-0036-7

Abstract: Collaborative research centre 561 “Thermally Highly Loaded, Porous and Cooled Multi-Layer Systemsfor Combined Cycle Power Plants” at RWTH Aachen University proposes cooling the highly loadedTo protect the thermally highly loaded components, a sandwich material consisting of two thin face sheets

Keywords： steam turbines 700& deg C-technology numerical inverstigation cooling

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A simplified method for the determination of vertically loaded pile-soil interface parameters in layered

Jiu-jiang WU,Yan LI,Qian-gong CHENG,Hua WEN,Xin LIANG

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 1, Pages 103-111 doi: 10.1007/s11709-015-0328-4

Abstract: The numerical analysis of pile-soil interaction commonly requires a lot of trial works to determine the interface parameters and the accuracy cannot be ensured normally. Considering this, this paper first conducts a sensitivity analysis to figure out the influence of interface parameters on the bearing behavior of a single pile in sand. Then, a simplified method for the determination of pile-soil interface parameters in layered soil is proposed based on the parameter studies. Finally, a filed loading test is used for the validation of the simplified method, and the calculated results agree well with the monitoring data. In general, the simplified method proposed in this paper works with higher accuracy and consumes less time compared with the traditional trial works, especially on the determinations of interfacial cohesive and interfacial friction angle.

Keywords： determination of interface parameters pile-soil interaction FLAC^3D sensitivity analysis layered soil

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em>Escherichia coli and bacteriophage MS2 in water using a copper and silver loaded

Guiying RAO, Kristen S. BRASTAD, Qianyi ZHANG, Rebecca ROBINSON, Zhen HE, Ying LI

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 4, doi: 10.1007/s11783-016-0854-x

Abstract: In this study, a new material with a novel structure, silver and copper loaded TiO nanowire membrane

Keywords： Photo-activated disinfection Titanium dioxide Nanowire membrane Silver Copper

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A MEMS Micro Force Sensor Based on a Laterally Movable Gate Field-Effect Transistor (LMGFET) with a Novel Article

Wendi Gao, Zhixia Qiao, Xiangguang Han, Xiaozhang Wang, Adnan Shakoor, Cunlang Liu, Dejiang Lu, Ping Yang, Libo Zhao, Yonglu Wang, Jiuhong Wang, Zhuangde Jiang, Dong Sun

Engineering 2023, Volume 21, Issue 2, Pages 61-74 doi: 10.1016/j.eng.2022.06.018

Abstract:

This paper presents the development of a novel micro force sensor based on a laterally movable gate

Keywords： Force sensor Laterally movable gate Field-effect transistor Photoresistive SU-8 Biomedical micromanipulation

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Sagittal SLIP-anchored task space control for a monopode robot traversing irregular terrain

Haitao YU, Haibo GAO, Liang DING, Zongquan DENG

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2, Pages 193-208 doi: 10.1007/s11465-019-0569-3

Abstract: that captures the essential dynamical behaviors of legged locomotion on sagittal plane, the spring-loaded

Keywords： legged robots spring-loaded inverted pendulum task space control apex return map deadbeat control irregular

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The physics scheme design for In-Hospital Neutron Irradiator Mark 1 reactor loaded low enrichment fuel

Jiang Xinbiao,Zhang Wenshou,Gao Jijin,Li Yiguo,Zhou Yongmao

Strategic Study of CAE 2009, Volume 11, Issue 11, Pages 17-21

Abstract: justify;">The core physics properties of 30 kW In-Hospital Neutron Irradiator-Mark 1(IHNI-1) reactor loaded

Keywords： IHNI-1 reactor boron neutron capture therapy reactivity

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Miniaturized UWB multi-resonance patch antenna loaded with novel modified H-shape SRR metamaterial for Article

Parul DAWAR, N. S. RAGHAVA, Asok DE

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 11, Pages 1883-1891 doi: 10.1631/FITEE.1601193

Abstract: We present the design and analysis of a novel modified H-shaped split ring resonator (SRR) metamaterial. It has negative permeability and permittivity characteristics with multi-band resonance for the X, Ku, and Ka frequency bands. Different configurations of the patch antenna have been analyzed with different orientations and positions of the metamaterial. Optimized performance was achieved with the new shape of the metamaterial antenna with an appreciable 9 dB gain, 77 GHz bandwidth, 100% radiation efficiency, and 65% reduction in active area. The second-order fractal metamaterial antenna achieves high min-iaturization on the order of 1/21. This is truly a boon in the communications world, as a sharp beam with smaller physical di-mensions is urgently required.

Keywords： Ultra-wideband (UWB) Antenna Metamaterial

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Title Author Date Type Operation

Numerical investigation of the ultimate lateral resistance of piles in soft clay

Konstantinos P. TZIVAKOS,Michael J. KAVVADAS

Journal Article

PM-support interfacial effect and oxygen mobility in Pt, Pd or Rh-loaded (Ce,Zr,La)O catalysts

Journal Article

The cavitation erosion damage process of dynamically loaded journal bearings

MA Yan-yan, CHENG Xian-hua

Journal Article

Preparation of a Pb loaded gas diffusion electrode and its application to CO

Ang LI, Hua WANG, Jinyu HAN, Li LIU

Journal Article

Selective targeted adsorption and inactivation of antibiotic-resistant bacteria by Cr-loaded mixed metal

Journal Article

Metal-organic framework loaded manganese oxides as efficient catalysts for low-temperature selective

Minhua Zhang, Baojuan Huang, Haoxi Jiang, Yifei Chen

Journal Article

Long acting carmustine loaded natural extracellular matrix hydrogel for inhibition of glioblastoma recurrence

Journal Article

Application of high-turning bowed compressor stator to redesign of highly loaded fan stage

LI Shaobin, SU Jiexian, WANG Zhongqi

Journal Article

Cooling performance of grid-sheets for highly loaded ultra-supercritical steam turbines

Dieter BOHN , Robert KREWINKEL , Shuqing TIAN ,

Journal Article

A simplified method for the determination of vertically loaded pile-soil interface parameters in layered

Jiu-jiang WU,Yan LI,Qian-gong CHENG,Hua WEN,Xin LIANG

Journal Article

em>Escherichia coli and bacteriophage MS2 in water using a copper and silver loaded

Guiying RAO, Kristen S. BRASTAD, Qianyi ZHANG, Rebecca ROBINSON, Zhen HE, Ying LI

Journal Article

A MEMS Micro Force Sensor Based on a Laterally Movable Gate Field-Effect Transistor (LMGFET) with a Novel

Wendi Gao, Zhixia Qiao, Xiangguang Han, Xiaozhang Wang, Adnan Shakoor, Cunlang Liu, Dejiang Lu, Ping Yang, Libo Zhao, Yonglu Wang, Jiuhong Wang, Zhuangde Jiang, Dong Sun

Journal Article

Sagittal SLIP-anchored task space control for a monopode robot traversing irregular terrain

Haitao YU, Haibo GAO, Liang DING, Zongquan DENG

Journal Article

The physics scheme design for In-Hospital Neutron Irradiator Mark 1 reactor loaded low enrichment fuel

Jiang Xinbiao,Zhang Wenshou,Gao Jijin,Li Yiguo,Zhou Yongmao

Journal Article

Miniaturized UWB multi-resonance patch antenna loaded with novel modified H-shape SRR metamaterial for

Parul DAWAR, N. S. RAGHAVA, Asok DE

Journal Article