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Discontinuous mechanical behaviors of existing shield tunnel with stiffness reduction at longitudinal

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 1,   Pages 37-52 doi: 10.1007/s11709-022-0920-3

Abstract: An analytical model is proposed to estimate the discontinuous mechanical behavior of an existing shieldtunnel above a new tunnel.The existing shield tunnel is regarded as a Timoshenko beam with longitudinal joints.Timoshenko beam GA, and different additional pressure profiles on the responses of the shield tunnelindicate that our proposed method is suitable for simulating the discontinuous mechanical behaviors of existing

Keywords： tunnel–soil interaction     discontinuous analysis     longitudinal joints     existing shield tunnel     Timoshenko    

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Quick safety construction technology on electric railway multiple line’s tunnel blast boring

Wang Faming

Strategic Study of CAE 2008, Volume 10, Issue 5,   Pages 58-62

Abstract:

How to ensure the existing tunnel's safety and the train normal runningwhile the electric railway multiple line tunnel was blast boring?

Keywords： electric railway     the existing tunnel     multiple line tunnel     stepped digging     underholing style    

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A Comprehensive Evaluation of Policy Effectiveness for Energy Efficiency in Existing Buildings

Xing Wei,Han-ding Guo

Frontiers of Engineering Management 2014, Volume 1, Issue 4,   Pages 341-347 doi: 10.15302/J-FEM-2014060

Abstract: The healthy and stable development of energy efficiencies in existing buildings cannot be separated fromsystem and a grey comprehensive evaluation model for policy effectiveness for energy efficiency in existing

Keywords： grey comprehensive evaluation     existing buildings     energy efficiency     policies effectiveness    

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removal from groundwater by GE-HL nanofiltration membrane: effects of arsenic concentration, pH, and co-existing

Xiaowei WANG, Wenjun LIU, Weifang MA, Desheng LI,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 4,   Pages 428-433 doi: 10.1007/s11783-009-0146-9

Abstract: Moreover, a negative relationship was observed between the co-existing ions of Cl, Na, SO, and Ca and

Keywords： nanofiltration (NF)     rejection rate     co-existing ion     co-ion     counter-ion    

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Seismic retrofit of existing SRC frames using rocking walls and steel dampers

Akira WADA, Zhe QU, Shojiro MOTOYUI, Hiroyasu SAKATA

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 259-266 doi: 10.1007/s11709-011-0114-x

Abstract: A retrofit of an existing 11-story steel reinforced concrete frame that features the innovative use ofThe retrofitting system is expected to effectively control the deformation pattern of the existing structureand significantly reduce damage to the existing structure during major earthquakes.

Keywords： building structure     seismic retrofit     rocking wall     steel damper    

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Improving existing “reaching law” for better discrete control of seismically-excited building structures

Zhijun LI, Zichen DENG

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2,   Pages 111-116 doi: 10.1007/s11709-009-0022-5

Abstract: In this paper, a novel “composite reaching law” was explained in details: 1) the equation of discrete motion for a control system; 2) the design of discrete-time variable structure control. In addition, the model of a three-storey shear-type building structure was used to verify the effectiveness of the discrete variable structure control method. The results of numerical example analysis of the model show that the control law can effectively reduce the peak value of seismic response of the building structure and the chattering effect of the control system.

Keywords： discrete-time variable structure control     composite reaching law     chattering effect     saturated control law    

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Self-catalytic pyrolysis thermodynamics of waste printed circuit boards with co-existing metals

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 11, doi: 10.1007/s11783-022-1581-0

Abstract:

● The co-existing metals in WPCBs has positive catalytic influence

Keywords： Waste printed circuit board     Catalyst     Pyrolysis     Kinetics    

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Study on Externality and Its Calculation Method of Existing Commercial Residential Buildings Energy Saving

Zhao Yan,Liu Xiaojun

Strategic Study of CAE 2014, Volume 16, Issue 10,   Pages 100-105

Abstract:

Externality exists in the field of existing commercial residential buildings

Keywords： existing commercial residential buildings     energy saving retrofit     externality     calculation    

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Surgical robotics: A look-back of latest advancement and bio-inspired ways to tackle existing challenges

Yang LIU, Jing LIU

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 4,   Pages 376-384 doi: 10.1007/s11465-012-0352-1

Abstract:

This article is dedicated to present a review on existing challenges and latest developments in surgicalWhile endeavors to deal with existing strategies still need to be made, attentions should be paid to

Keywords： minimally invasive surgery     surgical robotics     haptic feedback     miniaturization     bio-inspiration     bionics    

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Comparative analysis of energy use in China building sector: current status, existing problems and solutions

Shengyuan ZHANG, Xiu YANG, Yi JIANG, Qingpeng WEI,

Frontiers in Energy 2010, Volume 4, Issue 1,   Pages 2-21 doi: 10.1007/s11708-010-0023-z

Abstract: Existing problems of energy use and solutions for energy reduction in each sub-sector are also discussed

Keywords： building energy use     lifestyle and technology     residential building     commercial building     rural building    

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Effect of co-existing organic compounds on adsorption of perfluorinated compounds onto carbon nanotubes

Shubo DENG,Yue BEI,Xinyu LU,Ziwen DU,Bin WANG,Yujue WANG,Jun HUANG,Gang YU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5,   Pages 784-792 doi: 10.1007/s11783-015-0790-1

Abstract: Co-existing organic compounds may affect the adsorption of perfluorinated compounds (PFCs) and carbonThe effect of co-existing organic compounds on PFOS adsorption followed the decreasing order of humicAdsorbed amounts of PFOS decreased significantly in the presence of co-existing or preloaded humic acidThe increase of both initial concentrations and the number of aromatic rings of co-existing organic compounds

Keywords： perfluorinated compounds     carbon nanotubes     competitive adsorption     humic acid     perfluorooctane sulfonate (PFOS)    

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A multi-objective design method for seismic retrofitting of existing reinforced concrete frames using

Yue CHEN; Rong XU; Hao WU; Tao SHENG

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 9,   Pages 1089-1103 doi: 10.1007/s11709-022-0851-z

Abstract: the past several decades, a variety of technical ways have been developed in seismic retrofitting of existingIn this paper, a design method has been exploited for seismic retrofitting of existing RFs using PWs

Keywords： pin-supported rocking wall     reinforced concrete frame     seismic retrofit     stiffness demand     drift concentration factor     multi-objective design     genetic algorithm     Pareto optimal solution    

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Safety Aspects of Sustainable Storage Dams and Earthquake Safety of Existing Dams

Martin Wieland

Engineering 2016, Volume 2, Issue 3,   Pages 325-331 doi: 10.1016/J.ENG.2016.03.011

Abstract: Therefore, we need to reevaluate the seismic safety of existing dams based on current state-of-the-art

Keywords： Dams     Earthquake design     Earthquake safety     Existing dams     Design criteria     Seismic hazard     Sustainability    

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Research on Demarcating Method for Deep Tunnel and Shallow Tunnel in Soil

Zhao Zhanchang,Xie Yongli

Strategic Study of CAE 2005, Volume 7, Issue 10,   Pages 84-86

Abstract:

Directed against the demarcating problems of deep tunnel and shallow tunnel in exiting methods, thefeasible by two engineering cases, and is of importantce to lining design and construction of soil tunnel

Keywords： soil tunnel     deep tunnel and shallow tunnel     demarcating method    

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Effect of cutterhead configuration on tunnel face stability during shield machine maintenance outages

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 522-532 doi: 10.1007/s11709-023-0930-9

Abstract: Engineering safety during maintenance outages is determined by the stability of the tunnel face.The tunnel face is supported by a medium at the bottom of the excavation chamber and compressed air atDisregarding the supporting effect of the cutterhead will result in a tunnel face with underestimated

Keywords： tunnel face stability     cutterhead configuration     aperture ratio     pressure gradient     support ratio    

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Title Author Date Type Operation

Discontinuous mechanical behaviors of existing shield tunnel with stiffness reduction at longitudinal

Journal Article

Quick safety construction technology on electric railway multiple line’s tunnel blast boring

Wang Faming

Journal Article

A Comprehensive Evaluation of Policy Effectiveness for Energy Efficiency in Existing Buildings

Xing Wei,Han-ding Guo

Journal Article

removal from groundwater by GE-HL nanofiltration membrane: effects of arsenic concentration, pH, and co-existing

Xiaowei WANG, Wenjun LIU, Weifang MA, Desheng LI,

Journal Article

Seismic retrofit of existing SRC frames using rocking walls and steel dampers

Akira WADA, Zhe QU, Shojiro MOTOYUI, Hiroyasu SAKATA

Journal Article

Improving existing “reaching law” for better discrete control of seismically-excited building structures

Zhijun LI, Zichen DENG

Journal Article

Self-catalytic pyrolysis thermodynamics of waste printed circuit boards with co-existing metals

Journal Article

Study on Externality and Its Calculation Method of Existing Commercial Residential Buildings Energy Saving

Zhao Yan,Liu Xiaojun

Journal Article

Surgical robotics: A look-back of latest advancement and bio-inspired ways to tackle existing challenges

Yang LIU, Jing LIU

Journal Article

Comparative analysis of energy use in China building sector: current status, existing problems and solutions

Shengyuan ZHANG, Xiu YANG, Yi JIANG, Qingpeng WEI,

Journal Article

Effect of co-existing organic compounds on adsorption of perfluorinated compounds onto carbon nanotubes

Shubo DENG,Yue BEI,Xinyu LU,Ziwen DU,Bin WANG,Yujue WANG,Jun HUANG,Gang YU

Journal Article

A multi-objective design method for seismic retrofitting of existing reinforced concrete frames using

Yue CHEN; Rong XU; Hao WU; Tao SHENG

Journal Article

Safety Aspects of Sustainable Storage Dams and Earthquake Safety of Existing Dams

Martin Wieland

Journal Article

Research on Demarcating Method for Deep Tunnel and Shallow Tunnel in Soil

Zhao Zhanchang,Xie Yongli

Journal Article

Effect of cutterhead configuration on tunnel face stability during shield machine maintenance outages

Journal Article