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Calculation method on shape finding of self-anchored suspension bridge with spatial cables

Yan HAN, Zhengqing CHEN, Shidong LUO, Shankui YANG

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2,   Pages 165-172 doi: 10.1007/s11709-009-0021-6

Abstract: Based on the spatial model, a reliable and accurate calculation method on the shape finding of self-anchoredsuspension bridge with spatial cables was studied in this paper.By using a numerical method combining with the finite element method, one self-anchored suspension bridgelength of the main cables, the position of the saddle, and the pre-offsetting of the saddle of the self-anchoredsuspension bridge were given.

Keywords： bridge engineering     self-anchored suspension bridges     special cables     shape-finding     calculation method    

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Investigations concerning seismic response control of self-anchored suspension bridge with MR dampers

YANG Menggang, HU Jianhua

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 1,   Pages 43-48 doi: 10.1007/s11709-008-0011-0

Abstract: To mitigate the seismic response of self-anchored suspension bridges, equations of motion governing thecorresponding computer program is developed and employed for studying the seismic response control of a self-anchoredsuspension bridge with a main span of 350 m.

Keywords： longitudinal displacement     corresponding computer     excitation     phenomenological     self-anchored suspension    

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Computational fluid dynamic analysis of flutter characteristics for self-anchored suspension bridges

ZHU Zhiwen, WANG Zhaoxiang, CHEN Zhengqing

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3,   Pages 267-273 doi: 10.1007/s11709-008-0034-6

Abstract: The proposed methods are employed to identify flutter derivatives of the bridge deck of the Sanchaji Self-anchoredSuspension Bridge.

Keywords： discretization     computational     description     Self-anchored Suspension     simulation applicable    

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Limit span of self-anchored cable-stayed suspension cooperation system bridge based on strength

Zhe ZHANG , Huili WANG , Xiaomeng GE , Sifeng QIN ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3,   Pages 286-291 doi: 10.1007/s11709-009-0045-y

Abstract: The limit span of self-anchored cable-stayed suspension bridge is deduced.Based on the material strength and commonly used materials, the limit spans of self-anchored cable-stayedsuspension bridges with concrete girder or steel girder under vertical static load are discussed in

Keywords： cable-stayed suspension     self-anchored     limit span    

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Experimental research on the multilayer compartmental particle damper and its application methods on long-period bridge structures

Zhenyuan LUO, Weiming YAN, Weibing XU, Qinfei ZHENG, Baoshun WANG

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 751-766 doi: 10.1007/s11709-018-0509-z

Abstract: compartmental particle damper (MCPD) was proposed, and a 1/20 scale test model of a typical long-period self-anchoredsuspension bridge with a single tower was designed and fabricated.results showed that the seismic responses of the flexible or semi-flexible bridge towers of long-period bridgesThese results indicate that the application of MCPDs for seismic control of single-tower self-anchoredsuspension bridges and other long-period structures is viable.

Keywords： energy dissipation devices     multilayer compartmental particle damper     self-anchored suspension bridges    

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Aerodynamic stability evolution tendency of suspension bridges with spans from 1000 to 5000 m

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0980-z

Abstract: aerostatic and flutter-related failures is a significant concern in the wind-resistant design of long-span suspensionbridges.Based on the dynamic characteristics of suspension bridges with spans ranging from 888 to 1991 m, weFinite element models of suspension bridges with increasing span from 1000 to 5000 m were constructedbridges with spans longer than 3000 m.

Keywords： suspension bridge     super long-span     finite element model     aerodynamic instability     aerodynamic configuration    

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Improvement of aerodynamic stability of suspension bridges with H-shaped simplified stiffening girder

Hiroshi KATSUCHI,Hitoshi YAMADA,Mayuko NISHIO,Yoko OKAZAKI

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 1,   Pages 93-102 doi: 10.1007/s11709-015-0311-0

Abstract: Wind-tunnel study on the improvement of aerodynamic stability of simplified suspension-bridge girderObjective of the study is the development of an economically superior suspension bridge with 500–1,000

Keywords： suspension bridge     aerodynamics     simplified girder     wind-tunnel test    

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Comparisons of bridges flutter derivatives and generalized ones

Fuyou XU , Zhe ZHANG , Cailiang HUANG , Airong CHEN ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3,   Pages 272-278 doi: 10.1007/s11709-009-0042-1

Abstract: The causes of the nonlinearity of self-excited aerodynamic force of bridge are interpreted from suchIt is more convenient to understand the nonlinearity properties of self-excited aerodynamic force of

Keywords： bridge     flutter derivative     generalized flutter derivative     self-excited aerodynamic force     Sutong Bridge    

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Structural risk analysis of trans-oceanic suspension bridges

Zhang Qiang,Ma Jinghai

Strategic Study of CAE 2010, Volume 12, Issue 7,   Pages 61-63

Abstract: p style="text-align: justify;">The paper states the methodology of SRA (structural risk analysis)of BridgesIn terms of the objects of SRA, the contents and approaches of sea crossing suspension bridge SRA are

Keywords： suspension bridge     structural risk analysis     bridge management    

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Self-propelled automatic chassis of Lunokhod-1: History of creation in episodes

Mikhail MALENKOV

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 1,   Pages 60-86 doi: 10.1007/s11465-016-0370-5

Abstract:

This report reviews the most important episodes in the history of designing the self-propelled automatic

Keywords： moon rover     self-propelled chassis     propulsion     wheel     suspension     soil properties     cross-country ability    

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Development of Construction Technology and Equipment for Marine Bridges

Zhang Ruixia

Strategic Study of CAE 2019, Volume 21, Issue 3,   Pages 5-11 doi: 10.15302/J-SSCAE-2019.03.015

Abstract:

With the development of global economic integration, marine bridges haveGiven that structural types and construction equipment for current bridges can hardly satisfy the requirementsfor deep-sea bridges, in-depth strategic research on construction technology and equipment for marinebridges shall be conducted.As for superstructures of cable-stayed bridges and suspension bridges, the focus of research should be

Keywords： marine bridges     assembly foundation     open caisson     large-diameter steel pile     cable-stayed bridge     suspension    

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Wind resistance challenges and fundamental research on long-span bridges

Xiang Haifan,Ge Yaojun

Strategic Study of CAE 2011, Volume 13, Issue 9,   Pages 8-21

Abstract:

With the rapid development of long span bridges in China, this paper, including flutter instability and control of suspension bridges, wind induced vibration of cable-stayedbridges and control of wind-rain induced cable vibration, vortex shedding vibration and control of archbridges, and the refinements on aerodynamic flutter and buffeting of super long span bridges.the intrinsic limit of span length due to aerodynamic stability is about 1 500 m for a traditional suspension

Keywords： suspension bridge     cable stayed bridge     arch bridge     flutter instability     buffeting response     vortex    

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Sulfur-deficient CoNi2S4 nanoparticles-anchored porous carbon nanofibers as bifunctional

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1707-1717 doi: 10.1007/s11705-023-2308-x

Abstract: Water electrolysis technology is considered to be one of the most promising means to produce hydrogen. Herein, aiming at the problems of high overpotential and slow kinetics in water splitting, N-doped porous carbon nanofibers-coupled CoNi2S4 nanoparticles are prepared as bifunctional electrocatalyst. In the strategy, NaCl is used as the template to prepare porous carbon nanofibers with a large surface area, and sulfur vacancies are created to modulate the electronic structure of CoNi2S4. Electron spin resonance confirms the formation of abundant sulfur vacancies, which largely reduce the bandgap of CoNi2S4 from 1.68 to 0.52 eV. The narrowed bandgap is conducive to the migration of valence electrons and decreases the charge transfer resistance for electrocatalytic reaction. Moreover, the uniform distribution of CoNi2S4 nanoparticles on carbon nanofibers can prevent the aggregation and facilitate the exposure of electrochemical active sites. Therefore, the composite catalyst exhibits low overpotentials of 340 mV@100 mA·cm–2 for oxygen evolution reaction and 380 mV@100 mA·cm–2 for hydrogen evolution reaction. The assembled electrolyzer requires 1.64 V to achieve 10 mA·cm–2 for overall water-splitting with good long-term stability. The excellent performance results from the synergistic effect of porous structures, sulfur deficiency, nitrogen doping, and the well-dispersed active component.

Keywords： nanoparticle     sulfur vacancy     porous carbon nanofiber     transition metal sulfides     electrolysis    

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Nanosilver anchored alginate/poly(acrylic acid/acrylamide) double-network hydrogel composites for efficient

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 7,   Pages 893-905 doi: 10.1007/s11705-022-2290-8

Abstract: A novel alginate/poly(acrylic acid/acrylamide) double-network hydrogel composite with silver nanoparticles was successfully fabricated using the sol–gel method. The presence of carboxyl and amide groups in the network structure provided abundant active sites for complexing silver ions, facilitating the in situ reduction and confinement of silver nanoparticles. In batch experiments, the optimal silver loading was 20%, and 5 mmol·L–1 of p-nitrophenol was completely degraded in 113 s with a rate constant value of 4.057 × 10−2 s–1. In the tap water system and simulated seawater system, the degradation time of p-nitrophenol at the same concentration was 261 and 276 s, respectively, with a conversion rate above 99%. In the fixed-bed experiment, the conversion rate remained above 74% after 3 h at a flowing rate of 7 mL·min–1. After 8 cycling tests, the conversion rate remained at 98.7%. Moreover, the catalyst exhibited outstanding performance in the degradation experiment of four typical organic dyes.

Keywords： double-network hydrogel     dye degradation     silver nanoparticles     alginate    

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Technical Methods to Make Safety Monitoring and Forecast Models for the Foundation of Long SuspensionBridges

Chen Zhijian,Zhou Shizhong ,Zhuo Jiashou

Strategic Study of CAE 2002, Volume 4, Issue 6,   Pages 20-24

Abstract:

After stating the complexity of stability problem and the importance and technical difficulty to make safety monitoring model for layered rocky slope of foundation of the south tower and resistance body of south anchorage in Jiangyin Yangtze Bridge, this paper introduces the technical methods to wake the model of tower load distribution, the monitoring and alarm model of residual anchorage thrust, j. e. , cause factor of slope stability, the comprehensive fuzzy evaluation model for slope safety based on external deformation observation results and the forecast model for the stability of layered rocky slope based on observed internal shear displacement.

Keywords： layered rock mass     slope     monitoring and forecast model     technical methods    

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Title Author Date Type Operation

Calculation method on shape finding of self-anchored suspension bridge with spatial cables

Yan HAN, Zhengqing CHEN, Shidong LUO, Shankui YANG

Journal Article

Investigations concerning seismic response control of self-anchored suspension bridge with MR dampers

YANG Menggang, HU Jianhua

Journal Article

Computational fluid dynamic analysis of flutter characteristics for self-anchored suspension bridges

ZHU Zhiwen, WANG Zhaoxiang, CHEN Zhengqing

Journal Article

Limit span of self-anchored cable-stayed suspension cooperation system bridge based on strength

Zhe ZHANG , Huili WANG , Xiaomeng GE , Sifeng QIN ,

Journal Article

Experimental research on the multilayer compartmental particle damper and its application methods on long-period bridge structures

Zhenyuan LUO, Weiming YAN, Weibing XU, Qinfei ZHENG, Baoshun WANG

Journal Article

Aerodynamic stability evolution tendency of suspension bridges with spans from 1000 to 5000 m

Journal Article

Improvement of aerodynamic stability of suspension bridges with H-shaped simplified stiffening girder

Hiroshi KATSUCHI,Hitoshi YAMADA,Mayuko NISHIO,Yoko OKAZAKI

Journal Article

Comparisons of bridges flutter derivatives and generalized ones

Fuyou XU , Zhe ZHANG , Cailiang HUANG , Airong CHEN ,

Journal Article

Structural risk analysis of trans-oceanic suspension bridges

Zhang Qiang,Ma Jinghai

Journal Article

Self-propelled automatic chassis of Lunokhod-1: History of creation in episodes

Mikhail MALENKOV

Journal Article

Development of Construction Technology and Equipment for Marine Bridges

Zhang Ruixia

Journal Article

Wind resistance challenges and fundamental research on long-span bridges

Xiang Haifan,Ge Yaojun

Journal Article

Sulfur-deficient CoNi2S4 nanoparticles-anchored porous carbon nanofibers as bifunctional

Journal Article

Nanosilver anchored alginate/poly(acrylic acid/acrylamide) double-network hydrogel composites for efficient

Journal Article

Technical Methods to Make Safety Monitoring and Forecast Models for the Foundation of Long SuspensionBridges

Chen Zhijian,Zhou Shizhong ,Zhuo Jiashou

Journal Article