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Experimental and modeling studies on installation of arc sprayed Zn anodes for protection of reinforced concrete structures

Xianming SHI

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 1,   Pages 1-11 doi: 10.1007/s11709-016-0312-7

Abstract: Arc sprayed zinc (Zn) anode on concrete surfaces has been an emerging technology for protecting reinforced concrete structures from rebar corrosion in coastal environments. Many cathodic protection (CP) systems with arc sprayed Zn anodes will reach or exceed their design life in the near future and thus may function improperly or insufficiently, making it necessary to replace the aged anodes. However, prior to this study, little was known about the most effective profile for the concrete surface, for either new concrete or old concrete with existing Zn anodes removed. This work develops criteria to properly prepare the concrete surface before the application of new Zn anode. Experimental studies were conducted both in the laboratory and for a field structure in Oregon. Artificial neural network was used to achieve better understanding of the complex cause-and-effect relationships inherent in the Zn-mortar or Zn–concrete systems and was successful in finding meaningful, logical results from the bond strength data. The goal is to achieve strong initial bond strength of new Zn to concrete, which is essential for long-term performance of the CP system. The results from this case study suggest that it is necessary to adjust the anode removal and surface sandblasting based on the electrochemical age of the existing concrete. In all cases of sandblasting, minimize the exposure of large aggregates (e.g., those bigger than 19 mm in diameter).

Keywords： arc sprayed Zn     anode replacement     reinforced concrete     bridge preservation     neural networks     surface profile    

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Life-cycle cost analysis of optimal timing of pavement preservation

Zilong WANG,Hao WANG

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 1,   Pages 17-26 doi: 10.1007/s11709-016-0369-3

Abstract: Optimal application of pavement preservation or preventive maintenance is critical for highway agenciesstudy developed an integrated life-cycle cost analysis (LCCA) model to quantify the impact of pavement preservationon agency cost and vehicle operation cost (VOC) and analyzed the optimal timing of preservation treatmentsinitial IRI value significantly affects life extension and the benefit of agency cost caused by pavement preservationThere are considerable differences among the optimal timing of three preservation treatments.

Keywords： pavement preservation     life-cycle cost analysis     agency cost     vehicle operation cost    

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Study on Rank Preservation of the MCDM With Normalizing Formula

Zhang Ling,Zhou Dequn,Li Hongwei,Zhu Peifeng

Strategic Study of CAE 2006, Volume 8, Issue 12,   Pages 85-88

Abstract:

The application of the normalizing formula will result in violations of independence from irrelevant alternatives and lead to rank reversal. In the paper, the two methods that improve the original normalizing formula to erase the rank reversal are proposed; and a MCDM example based on the WAA operator is deduced to validate the conclusion using specific data at last. The methods mentioned can also be applied into other decision operators. The application of these methods can remove the influence of the normalizing formula to the independence from irrelevant alternatives and make the decision making more reasonable and scientific.

Keywords： MCDM decision     normalizing     violations of independence from irrelevant alternatives     rank preservation     rank    

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Full scale amendment of a contaminated wood impregnation site with iron water treatment residues

Sanne Skov NIELSEN, Peter KJELDSEN, Rasmus JAKOBSEN

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 4, doi: 10.1007/s11783-016-0842-1

Abstract: residues has a large potential for arsenic sorption Soils are highly contaminated by arsenic at wood preservation

Keywords： Field experiment     Iron oxide     Arsenic     Stabilization     Wood preservation sites    

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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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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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IN VITRO ACTIVITY OF EXTRACTS OF FIVE MEDICINAL PLANT SPECIES ON PLANT PATHOGENIC FUNGI

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 4,   Pages 635-644 doi: 10.15302/J-FASE -2020343

Abstract: nbsp;T. chinensis may have potential as a new natural fungicide and may be used for the preservation

Keywords： Botrytis cinerea / food preservation / plant diseases / plant pathogenic fungi / Tupistra chinensis    

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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.The judging method, possibility, and criterion of the vehicle-bridge resonance (coupled vibrations) ofto cause vehicle-bridge resonance.

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

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Study on Rank Reversals in Liner Allocation Method

Zhang Ling,Zhou Dequn

Strategic Study of CAE 2008, Volume 10, Issue 2,   Pages 50-53

Abstract: improved liner al location method named sequence liner allocation method is analyzed to ensure ran k preservation

Keywords： decision making     liner allocation method     rank reversal     rank preservation    

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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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Particle swarm optimization model to predict scour depth around a bridge pier

Shahaboddin SHAMSHIRBAND, Amir MOSAVI, Timon RABCZUK

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 4,   Pages 855-866 doi: 10.1007/s11709-020-0619-2

Abstract: Scour depth around bridge piers plays a vital role in the safety and stability of the bridges.equations using particle swarm optimization as a metaheuristic approach to predict scour depth around bridge

Keywords： scour depth     bridge design and construction     particle swarm optimization     computational mechanics     artificialintelligence     bridge pier    

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General framework for bridge life cycle design

Junhai MA, Airong CHEN, Jun HE

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 1,   Pages 50-56 doi: 10.1007/s11709-009-0004-7

Abstract: Based on a detailed illustration for bridge life cycle design which comprises the processes of servicemaintenance and repair design as well as cost analysis, this paper presented a general framework for bridge

Keywords： bridge whole life design     design phase     design process     general framework    

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Development and utilization of underground space for the protection of relics in the Yang Emperor Mausoleum of the Han Dynasty

CHEN Zhilong, ZHANG Ping, LI Juxi

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2,   Pages 229-233 doi: 10.1007/s11709-007-0028-9

Abstract: In particular, it discusses the preservation of historical and cultural relics, the harmonious relationship

Keywords： importance     architecture     preservation     harmonious relationship     construction    

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A filtering-based bridge weigh-in-motion system on a continuous multi-girder bridge considering the influence

Hanli WU, Hua ZHAO, Jenny LIU, Zhentao HU

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 5,   Pages 1232-1246 doi: 10.1007/s11709-020-0653-0

Abstract: A real-time vehicle monitoring is crucial for effective bridge maintenance and traffic management becauseoverloaded vehicles can cause damage to bridges, and in some extreme cases, it will directly lead to a bridgeBridge weigh-in-motion (BWIM) system as a high performance and cost-effective technology has been extensivelyHowever, the dynamic effect and data noise may have an adverse impact on the bridge responses duringand immediately following the vehicles pass the bridge.

Keywords： bridge weigh-in-motion     continuous bridge     fast Fourier transform     influence line     axle weight calculation    

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Title Author Date Type Operation

Experimental and modeling studies on installation of arc sprayed Zn anodes for protection of reinforced concrete structures

Xianming SHI

Journal Article

Life-cycle cost analysis of optimal timing of pavement preservation

Zilong WANG,Hao WANG

Journal Article

Study on Rank Preservation of the MCDM With Normalizing Formula

Zhang Ling,Zhou Dequn,Li Hongwei,Zhu Peifeng

Journal Article

Full scale amendment of a contaminated wood impregnation site with iron water treatment residues

Sanne Skov NIELSEN, Peter KJELDSEN, Rasmus JAKOBSEN

Journal Article

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

Michael CH HUI, Doris YAU

Journal Article

Precast steel–UHPC lightweight composite bridge for accelerated bridge construction

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

Journal Article

IN VITRO ACTIVITY OF EXTRACTS OF FIVE MEDICINAL PLANT SPECIES ON PLANT PATHOGENIC FUNGI

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

Study on Rank Reversals in Liner Allocation Method

Zhang Ling,Zhou Dequn

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

Particle swarm optimization model to predict scour depth around a bridge pier

Shahaboddin SHAMSHIRBAND, Amir MOSAVI, Timon RABCZUK

Journal Article

General framework for bridge life cycle design

Junhai MA, Airong CHEN, Jun HE

Journal Article

Development and utilization of underground space for the protection of relics in the Yang Emperor Mausoleum of the Han Dynasty

CHEN Zhilong, ZHANG Ping, LI Juxi

Journal Article

A filtering-based bridge weigh-in-motion system on a continuous multi-girder bridge considering the influence

Hanli WU, Hua ZHAO, Jenny LIU, Zhentao HU

Journal Article