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64篇 您的检索式:作者名="Zordan"
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1Finite element model updating of a tied-arch bridge using Douglas-Reid method and Rosenbrock optimization algorithm显示文摘Condition assessment of bridges has become increasingly important.In order to accurately simulate the real bridge,finite element(FE) model updating method is often applied.This paper presents the calibration of the FE model of a reinforced concrete tied-arch bridge using Douglas-Reid method in combination with Rosenbrock optimization algorithm.Based on original drawings and topographic survey,a FE model of the investigated bridge is created.Eight global modes of vibration of the bridge are identified by ambient vibration tests and the frequency domain decomposition technique.Then,eight structural parameters are selected for FE model updating procedure through sensitivity analysis.Finally,the optimal structural parameters are identified using Rosenbrock optimization algorithm.Results show that although the identified parameters lead to a perfect agreement between approximate and measured natural frequencies,they may not be the optimal variables which minimize the differences between numerical and experimental modal data.However,a satisfied agreement between them is still presented.Hence,FE model updating based on Douglas-Reid method and Rosenbrock optimization algorithm could be used as an alternative to other complex updating procedures.Tobia Zordan Bruno Briseghella Tao Liu 2014Journal of Traffic and Transportation Engineering(English Edition)2014,1,4:10
2An innovative steel-concrete joint for integral abutment bridges显示文摘Integral abutment bridges are becoming rather common, due to the durability problems of bearings and expansion joints. At the same time, among short- and medium-span bridges,multi-beam steel-concrete composite deck with hot-rolled girder is an economical and interesting alternative to traditional pre-stressed concrete solutions. The two concepts can be linked together to design integral steel-concrete composite bridges with the benefits of two typologies. The most critical aspect for these bridges is usually the joints between deck and piers or abutments. In this paper, an innovative beam-to-pier joint is proposed and a theoretical and experimental study is introduced and discussed. The analyzed connection is aimed at combining general ease of construction with a highly simplified assembly procedure and a good transmission of hogging and sagging moment at the supports in continuous beams. For this purpose, the traditional shear studs, used at the interface between steel beam and upper concrete slab, are also used at the ends of steel profiles welded horizontally to the end plates. To better understand the behaviour of this kind of joints and the roles played by different components, three large-scale specimens were tested and an FE model was implemented. The theoretical and experimental results confirmed the potential of the proposed connection for practical applications and indicated the way to improve its structural behaviour.Bruno Briseghella Tobia Zordan 2015Journal of Traffic and Transportation Engineering(English Edition)2015,2,4:5
3The optimal shapes of piles in integral abutment bridges显示文摘Integral abutment bridges(IABs) can be used to avoid the durability issues associated with bearings and expansion joints. For this type of bridge, the design of the optimal pile foundation, especially with respect to the horizontal stiffness, is a challenging issue. A structural optimization approach is proposed in this paper to optimize the pile foundation shape in integral abutment bridges. A procedure was implemented based on linking MATLAB, where an optimization code was developed, and OpenSees, which was used as the finite element solver. The optimization technique was compared with other techniques developed in previous researches to verify its reliability; the technique was then applied to a real 400 m-long IAB building in Verona, Italy, as a case study. The following two possibilities were considered and compared:(a) a pile with two different diameters along the depth and(b) a pile with a pre-hole. In fact, to increase the lateral and rotational flexibilities of the pile head, piles for an integral abutment bridge foundation are often driven into predeep holes filled with loose sand. Finally, the case of super-long integral abutment bridges(L = 500 m) with a corresponding displacement on one bridge end of approximately 50 mm was analysed. The following four pile design optimization cases were considered with similar study criteria as the Isola della Scala Bridge:(a) a pinned pile head for semi-integral abutment,(b) a fixed pile head without a pre-hole,(c) a fixed pile head with a pre-hole of any depth,(d) a fixed pile head of a pre-hole with a depth limit(< 2 m) allowing for enough embedded length for the friction pile. The case studies confirmed the potential of the proposed optimization techniques for finding the optimal shape of piles in integral abutment bridges.Cheng Lan Bruno Briseghella Luigi Fenu Junqing Xue Tobia Zordan 2017Journal of Traffic and Transportation Engineering(English Edition)2017,4,6:3
4Experimental fault-tolerant control of a PMSM drive显示文摘Bolognani S Zordan M Zigliotto M 2000IEEE Transactions on Industrial Electronics2000,47,5:1
5Dynamic response for motion capture animation显示文摘Zordan B V Majkowsk A Chiu B 2005ACM Transactions on Graphics2005,24,3:1
6Pathogenic anti-DNA autoantibody-inducing T helper cell lines from patients with active lupus nephritis:isolation of CD4-8-T helper cell lines that express the gamma delta T-cell antigen receptor 显示文摘 Zordan T Tsokos G C 1990Proc Natl Acad Sci USA1990,87,:1
7Dynamic Characteristics of a Curved Cable-stayed Bridge:Operational Modal Testing and FE Modeling显示文摘This paper summarizes the analytical and experimental dynamic analyses carried out to assess the actual dynamic behaviour of a curved cable-stayed bridge,recently erected in the commercial harbour of Porto Marghera ( Venice,Italy). Ambient vibration tests were carried out to determine the dynamic characteristics of the bridge and more than 20 modes were identified in the frequency range 0~10Hz. In the theoretical study,a 3D FE model of the bridge was developed using an integrated CAD-FEA approach; subsequently,the information obtained from the field tests,combined with simple manual tuning,provided a linear elastic model,accurately fitting the modal parameters of the bridge in its present condition.Bruno Briseghella Fulvio Busatta Carmelo Gentile Enzo Siviero Tobia Zordan 2010施工技术2010,39,5:1
8Performance-based control interface for character ani- mation显示文摘ISHIGAKI S WHITE T ZORDAN VB 2009ACM Transactions on Graphics2009,28,3:1
9On the Performance of Lossy Compression Schemes for Energy Constrained Sensor Networking显示文摘Zordan D Martinez B Vilajosana I 2014ACM Transactions on Sensor Networks2014,11,1:1
10Interlocking transcriptional feedback loops control white-opaque switching in Candida albicans显示文摘Zordan RE Miller MG Galgoczy D J ct al 2007PLoS Biol2007,5,10:1
11Momentum Control for Balance 显示文摘Macchietto A Zordan V Shelton C 2009ACM Transactions on Graphics (S0730-0301)2009,28,3:1
12Experimental Fault-tolerant Con-trol of a PMSM Drive 显示文摘Bolognani Zordan S Zigliotto M 2009IEEE Trans on Industry Electronics2009,47,5:1
13Experimental fault-tolerant eontrol of a PMSM drive显示文摘Bolognani S Zordan M Zigliotto M 2000IEEE Transactions on Industrial Electronics2000,47,5:1
14Evaluation of equivalent linearization analysis methods for Seismi- cally isolated buildings characterized by SDOF systems 显示文摘Liu T Zordan T Briseghella B Zhang Q 2014Journal of Engineering Structures2014,59,:1
15Experimental fault-tolerant control of PMSM drive显示文摘BOLOGNANI S ZORDAN M ZIGLIOTTO M 2000IEEE Transactions on Industry Electronics2000,47,5:1
16An improved equivalent linear model of seismic isolation system with bilinear behavior显示文摘Liu T Zordan T Briseghella B Zhang Q 2014Journal of Engineer- ing Structures2014,61,:1
17Dynamic response for motion capture animation 显示文摘ZORDAN V B MAJKOWSKA A CHIU B 2005Computer Graphics2005,24,3:1
18Pathogenic anti DNA autoantibody-inducing T helper cell lines from patients with active lupus nephritis:isolation of CD4 8 Thelper cell lines that express the gamma delta T-cell anti- gen receptor显示文摘Raiagopalan S Zordan T Tsokos G C 1990Proceedings of the National Academy of Sciences of the United States of America1990,87,18:1
19Macrophages commit postnatal endothelium-derived progenitors to angiogenesis and restrict endothelial to mesenchymal transition during muscle regeneration显示文摘Zordan P Rigamonti E Freudenberg K 2014Cell Death Dis2014,5,:1
20Experiment fault - tolerant control of a PMSM drive显示文摘Bologanni S Zigliotto M Zordan M 2000IEEE Transactions on Industrial Electronics2000,,5:1
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