@misc{Ullrich2005,
  type      = {Master Thesis},
  author    = {Ullrich, Carmen},
  title     = {Dynamische Analyse der Sprottetalbr{\"u}cke},
  doi       = {10.25643/bauhaus-universitaet.726},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-7268},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  year      = {2005},
  abstract  = {Die vorliegende Arbeit besch{\"a}ftigt sich mit der dynamischen Analyse der Sprottetalbr{\"u}cke infolge aufgetretener Asphaltsch{\"a}den. Sie beinhaltet die Erstellung eines FE-Modells, der Darstellung der theoretischen Grundlagen der Dynamik sowie die Auswertung von berechneten Eigenformen und Asphaltspannungen unter Ber{\"u}cksichtigung der derzeit g{\"u}ltigen Normen.},
  subject      = {Finite-Elemente-Methode},
  language  = {de}
}
@phdthesis{Simon2008,
  author    = {Simon, Antje},
  title     = {Analyse zum Trag- und Verformungsverhalten von Straßenbr{\"u}cken in Holz-Beton-Verbundbauweise},
  doi       = {10.25643/bauhaus-universitaet.1358},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20081022-14216},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  year      = {2008},
  abstract  = {Ziel der Arbeit ist es, einen Beitrag zur Weiterentwicklung und Adaption der Holz-Beton-Verbundbauweise auf den Straßenbr{\"u}ckenbau zu leisten. Dabei stehen differenzierte Untersuchungen zum Trag- und Verformungsverhalten hybrider Holzbr{\"u}ckentragwerke sowie die Entwicklung geeigneter Verbundelemente im Vordergrund. Um die Einf{\"u}hrung dieser innovativen Bauweise in der Praxis zu unterst{\"u}tzen, werden Bemessungs- und Konstruktionshinweise erarbeitet. Aufbauend auf eine Analyse des derzeitigen Forschungs- und Entwicklungsstandes auf dem Gebiet des Holz-Beton-Verbundbaus erfolgt die Untersuchung des Trag- und Verformungsverhaltens von Holz-Beton-Verbundbr{\"u}cken anhand einer umfangreichen Parameterstudie. Dabei wird der Einfluss verschiedener Geometrie- und Steifigkeitsparameter auf die Tragf{\"a}higkeit und Gebrauchstauglichkeit von Holz-Beton-Verbundbr{\"u}cken quantifiziert. Spezielle Untersuchungen dienen der Evaluation der Erm{\"u}dungssicherheit und der Ermittlung der Steifigkeitsdegradation unter Langzeitbeanspruchung auf der Basis einer realit{\"a}tsnahen Abbildung des differenten zeit- und klimaabh{\"a}ngigen Tragverhaltens der Verbundbaustoffe. Praxisgerechte Empfehlungen f{\"u}r die optimierte konstruktive Durchbildung hybrider Holzbr{\"u}ckentragwerke fassen die Ergebnisse der Parameterstudie zusammen. Aus den Parameteranalysen leitet sich ein Anforderungsprofil bez{\"u}glich der Steifigkeit und Tragf{\"a}higkeit geeigneter Verbundelemente f{\"u}r den Straßenbr{\"u}ckenbau ab. Das Tragverhalten von drei ausgew{\"a}hlten Verbundelementtypen, welche diesem Profil entsprechen, wird anhand systematischer Scherversuche unter Kurzzeit-, Langzeit- und dynamischer Belastung analysiert. Aufbauend auf diese Testreihen werden weiterf{\"u}hrende umfangreiche Versuchsserien mit dem Verbundelement D{\"u}belleiste zur Bestimmung der mechanischen Kennwerte und zur Analyse des Gesamttragverhaltens vorgestellt. In Auswertung der umfangreichen Bauteilversuche und rechnerischer Simulationen auf der Basis Finiter-Elemente-Modelle wird ein Bemessungskonzept erarbeitet und die Eignung des Verbundelementes D{\"u}belleiste f{\"u}r den Einsatz im Hybridbr{\"u}ckenbau nachgewiesen.},
  subject      = {Hybridbauweise},
  language  = {de}
}
@inproceedings{Schneider2003,
  author    = {Schneider, Lothar},
  title     = {Abbruch der Teufelstalbr{\"u}cke - Herausforderungen mit Risiko},
  doi       = {10.25643/bauhaus-universitaet.472},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-4722},
  year      = {2003},
  abstract  = {Anlass zum Abriss der Br{\"u}cke; Das abzubrechende Bauwerk; Vorgaben f{\"u}r den Abbruch (gem{\"a}ß der Ausschreibung, aus statischer Sicht, aus Arbeitsschutzgr{\"u}nden); Abbruch der Aufbauten und der Fahrbahnplatte (Abbruch der Aufbauten, Problem Festpunkt Bogenscheitel - Fahrbahn, Abbruch Plattenbalken und Pfeilerscheiben); Abbruch der B{\"o}gen (Abbruchger{\"u}st, Scheitel{\"o}ffnung, Bogenr{\"u}ckbau, Kontrollsystem). Noch nie zuvor war in Deutschland eine Bogenbr{\"u}cke auf diese Art und Weise abgebrochen worden. Maßgeblich f{\"u}r das Gelingen des schwierigen R{\"u}ckbaus der Teufelstalbr{\"u}cke war das Verantwortungsbewusstsein der Beteiligten im Zusammenhang mit der notwendigen Risikobereitschaft, aber auch mit der Vermeidung unn{\"o}tiger Restrisiken schon von vornherein. Zur Risikominimierung trugen die gute Organisation des Vorhabens, regelm{\"a}ßige gemeinsame Baustellenbegehungen mit Vertretern der f{\"u}r Sicherheit zust{\"a}ndigen Institutionen (Amt f{\"u}r Arbeitsschutz Gera, Bau-Berufsgenossenschaft, Sicher-heits- und Gesundheitsschutzkoordinator) sowie die technische Ausstattung bei. All dies f{\"u}hrte letztendlich zum Erfolg einer Maßnahme, bei der man den bisherigen Erfahrungsbereich verlassen musste.},
  subject      = {Arbeitsschutz},
  language  = {de}
}
@inproceedings{Sampaio2003,
  author    = {Sampaio, Alcinia Zita},
  title     = {Definition of a bridge deck geometrical modelling process to automate design graphical representations},
  doi       = {10.25643/bauhaus-universitaet.357},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-3575},
  year      = {2003},
  abstract  = {The construction of a new building interferes with the existent environment. A careful aesthetic study must be made at an early stage in the design and the visualization of a three-dimensional (3D) model of the structure is the best way to analyse it. As some structures presents a complex shape is difficult to execute a 3D model as well as the specific drawings. Using traditional graphical systems, the execution of deck specific drawings is extremely time consuming and the 3D deck model gives an approximation only of the exterior shape of the deck. The modelling scheme proposed here allows the automation of the geometric design phases related to the deck bridge element using as a means of integration a geometric database representative of the real deck shape. This concept was implemented in a computer program. This application is an important support in the process design namely at the conceptual and graphical stages. The computer application provides an important tool to the bridge designer particularly at the conceptual stage, as it allows aesthetic and structural evaluation of the bridge at an early stage in the design. The geometric modelling process and graphical results of a case study are presented.},
  subject      = {Br{\"u}ckenbau},
  language  = {en}
}
@misc{Rahn2007,
  type      = {Master Thesis},
  author    = {Rahn, Andre},
  title     = {"Monitoring an Br{\"u}ckenkappen mit Tellerankern"},
  doi       = {10.25643/bauhaus-universitaet.1274},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20080307-13431},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  year      = {2007},
  abstract  = {Br{\"u}ckenkappen gew{\"a}hrleisten die Trennung der Verkehrsr{\"a}ume Fahrbahn und Gehweg und m{\"u}ssen aufgrund ihrer Anordnung im Querschnitt Schutz- und Leiteinrichtungen aufnehmen. Zur Verankerung der Br{\"u}ckenkappen am {\"U}berbau werden je nach Erfordernissen Anschlussbewehrung und / oder Telleranker angeordnet. Die vorliegende Arbeit analysiert grundlegende M{\"o}glichkeiten zur messtechnischen Untersuchung von Br{\"u}ckenkappen bei Anwendung von Tellerankern. Dabei werden die theoretische und konstruktiven Grundlagen der Kappenausbildung betrachtet. Außerdem werden die Zusammenh{\"a}nge zwischen den auftretenden Einwirkungen und deren Auswirkungen auf Br{\"u}ckenkappen betrachtet. Darauf aufbauend werden Kennwerte zur Ermittlung der Beanspruchung in den Kappen und den Tellerankern abgeleitet und hinsichtlich der messtechnischen Erfassung und Auswertung der Messdaten analysiert.},
  subject      = {Br{\"u}cke},
  language  = {de}
}
@phdthesis{Nariman,
  author    = {Nariman, Nazim},
  title     = {Numerical Methods for the Multi-Physical Analysis of Long Span Cable-Stayed Bridges},
  doi       = {10.25643/bauhaus-universitaet.3710},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20171122-37105},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {236},
  abstract  = {The main categories of wind effects on long span bridge decks are buffeting, flutter, vortex-induced vibrations (VIV) which are often critical for the safety and serviceability of the structure. With the rapid increase of bridge spans, research on controlling wind-induced vibrations of long span bridges has been a problem of great concern.The developments of vibration control theories have led to the wide use of tuned mass dampers (TMDs) which has been proven to be effective for suppressing these vibrations both analytically and experimentally. Fire incidents are also of special interest in the stability and safety of long span bridges due to significant role of the complex phenomenon through triple interaction between the deck with the incoming wind flow and the thermal boundary of the surrounding air. This work begins with analyzing the buffeting response and flutter instability of three dimensional computational structural dynamics (CSD) models of a cable stayed bridge due to strong wind excitations using ABAQUS finite element commercial software. Optimization and global sensitivity analysis are utilized to target the vertical and torsional vibrations of the segmental deck through considering three aerodynamic parameters (wind attack angle, deck streamlined length and viscous damping of the stay cables). The numerical simulations results in conjunction with the frequency analysis results emphasized the existence of these vibrations and further theoretical studies are possible with a high level of accuracy. Model validation is performed by comparing the results of lift and moment coefficients between the created CSD models and two benchmarks from the literature (flat plate theory) and flat plate by (Xavier and co-authors) which resulted in very good agreements between them. Optimum values of the parameters have been identified. Global sensitivity analysis based on Monte Carlo sampling method was utilized to formulate the surrogate models and calculate the sensitivity indices. The rational effect and the role of each parameter on the aerodynamic stability of the structure were calculated and efficient insight has been constructed for the stability of the long span bridge. 2D computational fluid dynamics (CFD) models of the decks are created with the support of MATLAB codes to simulate and analyze the vortex shedding and VIV of the deck. Three aerodynamic parameters (wind speed, deck streamlined length and dynamic viscosity of the air) are dedicated to study their effects on the kinetic energy of the system and the vortices shapes and patterns. Two benchmarks from the literature (Von Karman) and (Dyrbye and Hansen) are used to validate the numerical simulations of the vortex shedding for the CFD models. A good consent between the results was detected. Latin hypercube experimental method is dedicated to generate the surrogate models for the kinetic energy of the system and the generated lift forces. Variance based sensitivity analysis is utilized to calculate the main sensitivity indices and the interaction orders for each parameter. The kinetic energy approach performed very well in revealing the rational effect and the role of each parameter in the generation of vortex shedding and predicting the early VIV and the critical wind speed. Both one-way fluid-structure interaction (one-way FSI) simulations and two-way fluid-structure interaction (two-way FSI) co-simulations for the 2D models of the deck are executed to calculate the shedding frequencies for the associated wind speeds in the lock-in region in addition to the lift and drag coefficients. Validation is executed with the results of (Simiu and Scanlan) and the results of flat plate theory compiled by (Munson and co-authors) respectively. High levels of agreements between all the results were detected. A decrease in the critical wind speed and the shedding frequencies considering (two-way FSI) was identified compared to those obtained in the (one-way FSI). The results from the (two-way FSI) approach predicted appreciable decrease in the lift and drag forces as well as prediction of earlier VIV for lower critical wind speeds and lock-in regions which exist at lower natural frequencies of the system. These conclusions help the designers to efficiently plan and consider for the design and safety of the long span bridge before and after construction. Multiple tuned mass dampers (MTMDs) system has been applied in the three dimensional CSD models of the cable stayed bridge to analyze their control efficiency in suppressing both wind -induced vertical and torsional vibrations of the deck by optimizing three design parameters (mass ratio, frequency ratio and damping ratio) for the (TMDs) supporting on actual field data and minimax optimization technique in addition to MATLAB codes and Fast Fourier Transform technique. The optimum values of each parameter were identified and validated with two benchmarks from the literature, first with (Wang and co-authors) and then with (Lin and co-authors). The validation procedure detected a good agreement between the results. Box-Behnken experimental method is dedicated to formulate the surrogate models to represent the control efficiency of the vertical and torsional vibrations. Sobol's sensitivity indices are calculated for the design parameters in addition to their interaction orders. The optimization results revealed better performance of the MTMDs in controlling both the vertical and the torsional vibrations for higher mode shapes. Furthermore, the calculated rational effect of each design parameter facilitates to increase the control efficiency of the MTMDs in conjunction with the support of the surrogate models which simplifies the process of analysis for vibration control to a great extent. A novel structural modification approach has been adopted to eliminate the early coupling between the bending and torsional mode shapes of the cable stayed bridge. Two lateral steel beams are added to the middle span of the structure. Frequency analysis is dedicated to obtain the natural frequencies of the first eight mode shapes of vibrations before and after the structural modification. Numerical simulations of wind excitations are conducted for the 3D model of the cable stayed bridge. Both vertical and torsional displacements are calculated at the mid span of the deck to analyze the bending and the torsional stiffness of the system before and after the structural modification. The results of the frequency analysis after applying lateral steel beams declared that the coupling between the vertical and torsional mode shapes of vibrations has been removed to larger natural frequencies magnitudes and higher rare critical wind speeds with a high factor of safety. Finally, thermal fluid-structure interaction (TFSI) and coupled thermal-stress analysis are utilized to identify the effects of transient and steady state heat-transfer on the VIV and fatigue of the deck due to fire incidents. Numerical simulations of TFSI models of the deck are dedicated to calculate the lift and drag forces in addition to determining the lock-in regions once using FSI models and another using TFSI models. Vorticity and thermal fields of three fire scenarios are simulated and analyzed. The benchmark of (Simiu and Scanlan) is used to validate the TFSI models, where a good agreement was manifested between the two results. Extended finite element method (XFEM) is adopted to create 3D models of the cable stayed bridge to simulate the fatigue of the deck considering three fire scenarios. The benchmark of (Choi and Shin) is used to validate the damaged models of the deck in which a good coincide was seen between them. The results revealed that the TFSI models and the coupled thermal-stress models are significant in detecting earlier vortex induced vibration and lock-in regions in addition to predicting damages and fatigue of the deck and identifying the role of wind-induced vibrations in speeding up the damage generation and the collapse of the structure in critical situations.},
  subject      = {Stabilit{\"a}t},
  language  = {en}
}
@inproceedings{MelhemCheng2004,
  author    = {Melhem, Hani and Cheng, Yousheng},
  title     = {Numeric Prediction Algorithms for Bridge Corrosion},
  doi       = {10.25643/bauhaus-universitaet.198},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1982},
  year      = {2004},
  abstract  = {The research reported in this article was conducted to mainly explore the two common numeric prediction techniques, the model tree and the regression tree, when used in conjunction with bagging as a wrapper method. Bagging is used to improve the prediction accuracy of these two algorithms, and results are compared with the ones obtained earlier by the k-nearest neighbor (KNN) algorithm. From the conducted experiments, both the bagged regression tree and bagged model tree produce better results than not only their corresponding regression tree and model tree alone, but also the KNN with optimal value of k equal to 7. In addition, the bagged model tree yields the lowest prediction errors and a highest correlation coefficient of 0.81. It is demonstrated that it is feasible to use the bagged model tree for engineering applications in prediction problems such as estimating the remaining service life of bridge decks.},
  subject      = {Hochschulbildung},
  language  = {en}
}
@article{KeJianMing2004,
  author    = {Ke, Chen and Jian Ming, Lu},
  title     = {Study of Analysis System for Bridge Test},
  doi       = {10.25643/bauhaus-universitaet.254},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2547},
  year      = {2004},
  abstract  = {Analysis System for Bridge Test (Chinese name abbr.: QLJC) is an application software specially designed for bridge test to analyze the static and dynamic character of bridge structures, calculate efficiency ratio of load test, pick up the results of observation points and so on. In this paper, research content, system design, calculation theory, characteristics and practical application of QLJC is introduced in detail.},
  subject      = {Finite-Elemente-Methode},
  language  = {en}
}
@inproceedings{JianMingKe2004,
  author    = {Jian Ming, Lu and Ke, Chen},
  title     = {Information technology used in highway and bridge engineering},
  doi       = {10.25643/bauhaus-universitaet.111},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1114},
  year      = {2004},
  abstract  = {With the speedy development of transportation of China, especially construction of many high-grade highways, some information technology successes have been achieved in the highway and bridge engineering, such as survey, design, construction and maintenance etc. In this paper, some applications about information technology in the highway engineering were introduced and some bridge professional software developed by RIOH (Research Institute Of Highways) in recent years was also introduced.},
  subject      = {Mobile Computing},
  language  = {en}
}
@inproceedings{Hoernig2000,
  author    = {H{\"o}rnig, Wolfgang},
  title     = {Moderne Fertigungsmethoden im Br{\"u}ckenbau am Beispiel der Bogenherstellung {\"u}ber die Wilde Gera},
  doi       = {10.25643/bauhaus-universitaet.699},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-6994},
  year      = {2000},
  abstract  = {Es werden die Erfahrungen der Adam H{\"o}rnig Baugesellschaft bei der Bogenherstellung im Freivorbau einer Autobahnbr{\"u}cke beschrieben.},
  subject      = {Baustelle},
  language  = {de}
}