Relevant bibliographies by topics / Pier arches

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Pier arches'

Author: Grafiati
Published: 4 June 2021
Last updated: 11 February 2022

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Journal articles on the topic "Pier arches"

1

Ruocci, Gianluca, Rosario Ceravolo, and Alessandro de Stefano. "Modal Identification of an Experimental Model of Masonry Arch Bridge." Key Engineering Materials 413-414 (June 2009): 707–14. http://dx.doi.org/10.4028/www.scientific.net/kem.413-414.707.

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The erosion of the river bed material at bridge pier foundation produced by scour events is one of the main causes of the observed masonry bridges failures and collapses. Foundation settlements and rotations derived from the reduction of the footprint under the piers threaten masonry arch bridges integrity more than any gravity load. The resulting effect on the structure is the development of cracking mechanisms on the arches which may affect the dynamic behaviour of the whole bridge. A scaled experimental model of a masonry arch bridge has been built in the laboratory of the Dep. of Structural Engineering at the Politecnico di Torino. The aim was to better understand scour damage scenario and to identify early structural symptoms of pier erosion. A preliminary dynamic identification is carried out on the intact structure and a comparison with the FEM results is performed. The set of identified modal parameters is adopted as the reference system that will be compared with those acquired after the application of damage of increasing extent.
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Mei, Kuihua, Wangwang Fu, and Jufeng Su. "Seismic Analysis of Hybrid System Bridge of Multi-Span Continuous Girder and Arches." E3S Web of Conferences 165 (2020): 04032. http://dx.doi.org/10.1051/e3sconf/202016504032.

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The Chengdong Hanjiang Bridge in Ankang City is a multi-span continuous beam-arch combination system bridge of (75+2×125+160+2×125+75) m, and its site is located in the earthquake zone. Calculation model based on Midas / Civil finite element software process analysis method is applied to seismic response analysis using power. At the same time, in order to influence the travelling wave effect and the seismic isolation system on the internal force of the bridge structure, corresponding finite element models were established and calculated with time history analysis. The finite element model under non-uniform excitation uses the “Large Mass Method” (LMM) for analysis and calculation under different wave velocity multi-point excitations. The results show that after considering the traveling wave effect, the displacement and bending moment of the control section of each hole increase, and the internal force of the fixed pier increases. When the wave velocity is 600m/s, the traveling wave effect strengthens the seismic response of the structure the most. With the increase of the wave velocity, the seismic response of the structure gradually approaches the seismic response under uniform excitation. After the friction pendulum seismic isolation support is used, it is fixed. The bending moment of Pier No.32 has been reduced by 80%, the stiffness of the whole bridge is more balanced, the forces of each pier are relatively close, and the isolation effect is good.
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Munteán, László. "The Roman Aqueduct of Aquincum in Technological and Cultural Contexts." Hungarian Cultural Studies 14 (July 16, 2021): 1–19. http://dx.doi.org/10.5195/ahea.2021.424.

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This article explores the technological and cultural history of the Roman aqueduct of Aquincum in Budapest. The only one in the Roman province of Pannonia that was elevated to a continuous line of arches, this aqueduct conveyed water from its source in what is now Budapest’s third district to its final destination over three miles to the south, where a Roman military town was located. Apart from the aqueduct’s technological and archaeological aspects, this article also examines several cultural practices that it engendered including the ritualistic significance of the springs that fed it, its appearance as a ruin in various medieval documents, the transformation of its last, above-ground pier into a Christian shrine in the nineteenth century, as well as the relocation of two of its piers to give way to the construction of a road junction.
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Luo, Yan Feng. "Key Techniques of Integral Lifting of Steel Tube Arch for Zhuzhou Bridge in Baise." Advanced Materials Research 694-697 (May 2013): 3040–44. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.3040.

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Superstructure of Zhuzhou Bridge in Baise is a combined system with strong beam and weak arch. It is combined by concrete arches of continuous rigid frame-steel tube. The construction sequence is first the beam then arch, finally the temporary pier is demolished to form the combined system. The middle three parts of steel tube arch rib in the middle span were assembled to a large unity, and it was integrally lifted by synchronous system of hoisting jack to reach positive stop. The techniques have the characteristics of fast, safe and low cost.
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Figg, Eugene C. "Quantitative Approach to Bridge Aesthetics for the 21st Century." Transportation Research Record: Journal of the Transportation Research Board 1696, no. 1 (January 2000): 10–16. http://dx.doi.org/10.3141/1696-02.

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Many important qualities must be considered for the proper aesthetic design of bridges to develop harmony with their environment. Methodologies for segmental bridge design that create bridges that preserve the existing landscapes and complement, and even enhance, their settings are examined. Bridges considered have received 123 design awards in the past 21 years, including 3 Presidential Awards through the National Endowment for the Arts. Proper scale and proportions of various bridge members to create balanced and slender appearances are quantified, including proper span-to-depth and pier width-to-height ratios for graceful structures. The design methodology for aesthetics includes a quantitative and qualitative sorting of natural site features to determine appropriate shapes for the superstructure and substructure. Criteria for selecting and evaluating the visual effects of shape, shadows, vistas, color, textures, and the use of native materials are addressed. Quantification of the cost of aesthetic decisions and determination of aesthetic value are addressed for different elements of these bridges. Case studies are used to quantify aesthetic features for such bridges as the Natchez Trace Parkway Arches [first precast concrete arches with 177-m (582-ft) main arch span], Tennessee; Sunshine Skyway Bridge, Florida; Linn Cove Viaduct, North Carolina; Hanging Lake Viaduct, Colorado; and Wabasha Street Bridge, Minnesota.
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Malena, Marialaura, Maurizio Angelillo, Antonio Fortunato, Gianmarco de Felice, and Ida Mascolo. "Arch bridges subject to pier settlements: continuous vs. piecewise rigid displacement methods." Meccanica 56, no. 10 (July 5, 2021): 2487–505. http://dx.doi.org/10.1007/s11012-021-01397-1.

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AbstractSettlements severely affect historic masonry arch bridges worldwide. There are countless examples of structural dislocations and ruins in recent years due to severe settlements at the base of pier foundations, often caused by shipworm infestation of wooden foundations or scouring and riverbed erosion phenomena. The present paper proposes an original way to approach the failure analysis of settled masonry arch bridges. The proposed method combines two different 2D numerical models for the prediction of masonry arch bridge capacity against settlements and for safety assessment. The first one is the Piecewise Rigid Displacement method, i.e. a block-based limit analysis approach using the well known Heyman's hypotheses; the second one is a continuous Finite Element approach. The case study of the four-span Deba Bridge (Spain, 2018) failure is presented with the aim to illustrate how the methods work. The failure analysis produced satisfactory results by applying both methods separately, in confirmation of their reliability. Their combination also allowed to obtain a significantly reduction in computational cost and an improvement of prediction accuracy. A sensitivity and a path-following analysis were also performed with the aim to demonstrate the robustness of the presented method. The obtained simulations highlighted that the results do not depend on the friction angle and that a proper prediction of the evolution of the structural behavior can be obtained only taking into account geometric nonlinearities. Such results demonstrate once again that in settled masonry arches geometry prevails over the mechanical parameters. The current study paves the way for the fruitful use of the proposed approaches for a wider range of applications, as, for example, the mechanism identification or the displacement capacity assessment of masonry structures under overloading as seismic loads.
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Murdiansyah, Lukman, Robby Permata, and Donald Essen. "Modal pushover analysis on reinforced concrete arch bridge to estimate seismic responses." E3S Web of Conferences 156 (2020): 03005. http://dx.doi.org/10.1051/e3sconf/202015603005.

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This paper presents an evaluation study of the performance of reinforced concrete arch bridge structures under earthquake load. The study is aimed to investigate the seismic performance of Wreksodiningrat Bridge, located in the province of Yogyakarta, Indonesia. This bridge is a three spans reinforced concrete arch bridge with a main span length of 75 m and two side spans with a length of 35 m, respectively. This study is a part of a large project carried out by the Ministry of Public Works to study the impact of the new 2016 Indonesia Seismic Design Code for Bridges (SNI 2833:2016). The main objective of this paper is to determine the displacement demands due to earthquake load based on the new seismic code design for bridges, SNI 2833:2016. In addition, demand capacity ratios (D/C) of the main structural components, such as the compression arch and main column (pier) at the fixed support, are also reviewed in this paper. The analysis was carried out using nonlinear modal pushover analysis. The arch bridge modeling is three dimensional, where structural elements such as beams, columns, and compression arches are modeled as frame elements. The plastic hinges are modeled as fiber hinges with unconfined and confined concrete material stress-strain relationship following Mander formula. The analysis result shows that the displacement demands of the bridge are 2.9 cm and 20 cm in the longitudinal and transverse direction, respectively. The D/C ratios of the compression arch due to demand earthquake load are 0.74 and 0.95 in the longitudinal and transverse direction of the bridge, while the D/C ratios of the pier are 0.15 and 0.80 in the longitudinal and transverse direction. Based on the above results, it is concluded that the studied bridge is able to withstand the seismic load requirements in the new Indonesia Seismic Design Code.
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Chi, En An, Chun Ming Xie, Ming Sheng Zhao, Jun Yang, and Tie Jun Tao. "The through Arch Rib Road Bridge Numerical Simulation of Blasting Demolition." Applied Mechanics and Materials 533 (February 2014): 175–80. http://dx.doi.org/10.4028/www.scientific.net/amm.533.175.

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In order to ensure one through arch rib road bridge blasting demolition will go well, using separate common node reinforced concrete model, numerical simulate the process of bridge collapsed and disintegrate, at the same time, analyze the stress state of steel and concrete unit in detail. The simulation results show that separate common node model could reflect the mechanical properties difference of steel and concrete materials; destruction of the support part of bridge and joint parts reserved , meanwhile, blasting treatment of the joint parts of derrick and arches, also arch center derrick and deck beams, arch springing hinge inside pier reserved on the left, it can ensure the bridge collapsed and broken fully, and can reduce the stack height of bridge collapsed in the river. The research considers that researching on structure collapse process by numerical simulation method not only reappear the process of collapse, but also forecast collapse result in schematic design phase. It will become the important means of study the structure mechanics process of blasting demolition and guide assisted the design of structure blasting demolition, which has important engineering practical value.
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Boothby, Thomas E., and Colin B. Brown. "Stability of Masonry Piers and Arches." Journal of Engineering Mechanics 118, no. 2 (February 1992): 367–83. http://dx.doi.org/10.1061/(asce)0733-9399(1992)118:2(367).

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Boothby, Thomas E. "Stability of Masonry Piers and Arches Including Sliding." Journal of Engineering Mechanics 120, no. 2 (February 1994): 304–19. http://dx.doi.org/10.1061/(asce)0733-9399(1994)120:2(304).

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Dissertations / Theses on the topic "Pier arches"

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Johansson, Emil, and Fredrik Unell. "Flight Testing of the Piper PA-28 Cherokee Archer II Aircraft." Thesis, KTH, Skolan för teknikvetenskap (SCI), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-153226.

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It is sometimes easily assumed that an experimental measurement will closely mimic the results from an associated theoretical model. The purpose of this project is to determine how close to a theoretical model - involving the component buildup method and the quadratic drag polar assumption - a Piper Archer II will perform in an actual test flight. During the test flight, the Archer II showed a similar correlation between air speed and performance as the model. The actual performance numbers were, however, consistently lower than their theoretical counterpart.
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Fourchet, François. "La prévention des blessures du pied et de la cheville chez les jeunes athlètes." Thesis, Reims, 2012. http://www.theses.fr/2012REIMS009/document.

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L’objectif de ce travail était d’examiner la prévention des blessures du complexe pied-cheville chez les athlètes adolescents au travers de trois approches: les facteurs de risque de blessure du complexe pied-cheville liés à la course, l’épidémiologie des blessures du complexe pied-cheville et la mise en œuvre de stratégies de prévention. L’approche relative aux facteurs de risque de blessure du complexe pied-cheville liés à la course avait pour objectif de déterminer (i) comment la fatigue induite par la course pouvait affecter la force et la fatigabilité des fléchisseurs plantaires et dorsaux de la cheville, la répartition des pressions plantaires, la mécanique de la course et la raideur de l’arche médiale, (ii) comment le chaussage (chaussures à pointes ou “runnings”) pouvait affecter la répartition des pressions plantaires en sprint et enfin (iii) comment l’allure de course pouvait influencer la répartition des pressions plantaires. L’approche relative à l’épidémiologie des blessures du complexe pied-cheville avait pour objectif de recueillir et d’analyser, sur trois saisons, les blessures subies au niveau du complexe pied-cheville par de jeunes athlètes très entrainés et leurs relations potentielles avec le niveau de maturité de ces athlètes. L’approche présentant la mise en œuvre de certaines stratégies de prévention avait pour but d’abord de concevoir puis de valider une méthode pratique et fiable pour mesurer la souplesse. Le second objectif de cette approche était d’évaluer sur le terrain les effets d’un protocole de renforcement musculaire par électrostimulation sur la raideur de l’arche médiale du pied puis les effets d’un programme de renforcement musculaire combiné sur la répartition des pressions plantaires et la performance en sprint
The aim of this work was to examine the foot-ankle injury prevention in adolescent athletes through three approaches: the running-related foot-ankle injury risk factors, the epidemiology of foot-ankle injuries and the implementation of prevention strategies. The approach dealing with the running-related foot-ankle injury risk factors aimed to determine (i) how running-induced fatigue may affect the force and the fatigability of the ankle plantar and dorsal flexor muscles, the foot plantar pressure distribution, the running mechanics and the medial arch stiffness, (ii) how the shoe wear (spikes or running shoes) may affect the plantar load distribution while sprinting and (iii) how running velocity may alter the plantar load distribution. The approach related to epidemiology of foot-ankle injuries aimed at collecting and analysing, over three seasons, the foot-ankle injuries sustained by highly-trained adolescent athletes and their potential relations with the maturity status of these athletes. The approach presenting some prevention strategies implementations aimed firstly to design and validate a convenient and reliable flexibility measurement method. The second purpose of this approach was to assess on the field the effects of a neuromuscular electromyostimulation strengthening protocol on the foot medial arch stiffness and the effects of a combined foot-ankle strengthening training on the foot plantar pressure distribution and the performance while sprinting
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Levant, Marie. "Reconquérir le Reich ? : le Vatican et l'Allemagne de Weimar, des nonciatures Pacelli au Reichskonkordat (1919-1934)." Thesis, Brest, 2012. http://www.theses.fr/2012BRES0056.

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La restauration d'une Chrétienté, la conversion des nations à la doctrine chrétienne de l'organisation des hommes en société : telle fut la substance des projets de la papauté de l'entre-deux-guerres. Or, ceux-ci trouvèrent dans l'Allemagne des années Vingt un terrain favorable, dès lors que la jeune République, construite par-dessus l'humiliation de la défaite et le chaos de la Révolution, était plus que fragile. Cette quête eut ses relais : les clercs et les religieux, sur lesquels le Saint-Siège voulut renforcer son contrôle pour romaniser un catholicisme parfois suspect de modernisme ; les œuvres catholiques, dont la relance fut au cœur du pontificat de Pie XI ; le Zentrum, au rôle renforcé par la parlementarisation ; le service diplomatique, dès lors qu'enfin, il fut possible d'installer un nonce à Berlin. Mais l'instrument privilégié de la reconquête devait être le concordat. Après les concordats signés avec quelques Länder, le Concordat du Reich du 20 juillet 1933 devait donc représenter le couronnement de cette politique. Or, la victoire était vide de sens. Loin des ambitions restauratrices qui avaient valu en 1919, le traité n'eut plus qu'une fonction de défense, et encore, d'une efficacité sujette à caution, dès lors que le Führer en transgressa immédiatement les dispositions. La thèse s'arrête finalement à l'été 1934, après la nuit des Longs Couteaux et la mort du président Hindenburg. Ces deux épisodes achevaient la construction du totalitarisme nazi; mais en même temps qu'ils révélaient toute la vanité de l'entreprise restauratrice chrétienne, ils signifiaient aussi pour Rome la fin des illusions quant aux possiblités de canaliser Hitler et le nazisme
My Ph.D thesis is focused on Papal prospects of a Catholic re-conquest, according to the model of the medieval Christianity; that is to say, the papal attempt to place the Roman Church at the heart of society once again, or, in other words, the efforts to restore mutatis mutandi a Christian system, as it was in Europe before the French Revolution. In fact, following the First World War, the situation in Germany offered great possibilities to this kind of Roman policy. We may think about the German needs to get help from the Holy See on the international scene, or the new political order, i.e the Weimar Constitution favorable to Catholic interests and the power gained by political Catholicism. To develop this policy, the Holy See had different means: the ecclesial means, such as bishop's appointments, ecclesiastical formation, theological studies, which were used to romanizzare the german Catholicism and to reinforce roman control over the German Church; second, the means of the Catholic activism, such as religious instruction and education, Catholic lay organizations and Christian political parties. However, the best instrument was certainly the Concordat; and from that point of view, the diplomatic activity was certainly increased by the Nuncio appointed for the first time in Berlin. My thesis ends with the summer of 1934, after the Night of the Long Knives and president Hindenburg's death. Indeed, these two episodes finished the formation of the Nazi Totalitarianism, but they revealed also how vain the Papal policy was. It can be viewed as the beginning of the disillusions in Rome about Hitler and the possibilities of moderating him
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Books on the topic "Pier arches"

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Archivio Piero Calamandrei. Firenze: Polistampa, 2012.

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L'archivio di Piero Gobetti: Tracce di una prodigiosa giovinezza. Milano, Italy: FrancoAngeli, 2010.

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1830-1903, Cremona Luigi, and Chelini Domenico 1802-1878, eds. Le carte di Domenico Chelini dell'Archivio generale delle scuole pie e la corrispondenza Chelini-Cremona, 1863-1878. Sesto San Giovanni (Milano): Associazione culturale Mimesis, 2009.

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United States. National Transportation Safety Board. Aircraft accident report: Midair collision of Nabisco Brands, Inc., Dassault Falcon, DA50, N784B and Air Pegasus Corporation, Piper Archer, PA28-181, N1977H, Fairview, New Jersey, November 10, 1985. Washington, D.C: The Board, 1987.

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Pyrénées-Atlantiques, Archives départementales des. Répertoire numérique détaillé des sous-séries: 38 J (fonds Vivier), 47 J (fonds Vivié), 54 J (fonds de la corporation des part-prenants de la fontaine salée de Salies-de-Béarn), 80 J (fonds Haramburu, Marchands de laine à Saint-Jean-Pied-de-Port, Bordeaux et Hernani (Espagne)), 81 J (fonds de Coulomme-Labarthe). Pau: Les Archives départementales, 1995.

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Cenni, Francesca, editor of compilation, ed. Un caleidoscopio di carte: Gli archivi Calamandrei di Firenze, Montepulciano, Trento e Roma : Convegno organizzato dalla Biblioteca archivio "Piero Calamandre," istituzione del comune di Montepulciano, sotto l'alto patronato del presidente della Republica : Montepulciano, 20-21 ottobre 2010. Firenze: Il ponte editore, 2010.

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Whittle, Chris, and Joshua Lehman. Flight Maneuvers Standardization Manual For The Piper Archer II: Step By Step Procedures For the Private Pilot And Commercial Pilot Maneuvers. CreateSpace Independent Publishing Platform, 2016.

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Hutton, Charles. Principles of Bridges: Containing the Mathematical Demonstrations of the Properties of the Arches, the Thickness of the Piers, the Force of the Water Against Them, Etc. Cambridge University Press, 2014.

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Gehler, Michael, and Wilfried Loth, eds. Reshaping Europe. Nomos Verlagsgesellschaft mbH & Co. KG, 2020. http://dx.doi.org/10.5771/9783748907855.

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How can the new dynamic in European integration politics during the second half of the 1980’s be explained? What were the driving forces behind the Single European Act, the achievement of the Single Market, the Schengen agreement, the EC’s expansion to the south, and the new steps towards Monetary Union and the Common Foreign and Security Policy? In this book, using numerous discoveries from the archives, historians from 12 countries show how the European Community reacted to the challenges of globalisation and the reform initiatives by Mikhail Gorbachev. In doing so, they write a new chapter in the history of European integration: the emergence of the European Union. With contributions by Marta Alorda, Andrea Brait, Frédéric Bozo, Eric Bussière, Deborah Cuccia, Alice Cunha, Anjo G. Harryvan, Michael Gehler, Gilles Grin, Maria Eleonora Guasconi, Georg Kreis, Wilfried Loth, Marco Lovec, N. Piers Ludlow, Simone Paoli, Nicolae Paun, Kiran Klaus Patel, Daniela Preda, Frederike Schotters, Jasper Trautsch, Jan van der Harst, Laurent Warlouzet
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Book chapters on the topic "Pier arches"

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Mahdi, Tariq. "Seismic Vulnerability of Arches, Vaults and Domes in Historical Buildings." In Civil and Environmental Engineering, 101–44. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-4666-9619-8.ch004.

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Arches, vaults and domes are common features in the cultures of old civilizations. They were usually made of sun-dried bricks, fired bricks or stones with different types of mortar. The majority of these components are vulnerable to seismic effects. Furthermore, the thrust actions transmitted by arches, vaults and domes to walls and piers usually cause damage to the supporting walls or piers. The present chapter discusses the structural behaviour and performance of these elements in past earthquakes and reviews the numerical models used for the seismic assessment of these elements. Furthermore, different damage assessment approaches are reviewed and suggestions are made on further research.
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Mahdi, Tariq. "Seismic Vulnerability of Arches, Vaults and Domes in Historical Buildings." In Handbook of Research on Seismic Assessment and Rehabilitation of Historic Structures, 401–47. IGI Global, 2015. http://dx.doi.org/10.4018/978-1-4666-8286-3.ch014.

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Arches, vaults and domes are common features in the cultures of old civilizations. They were usually made of sun-dried bricks, fired bricks or stones with different types of mortar. The majority of these components are vulnerable to seismic effects. Furthermore, the thrust actions transmitted by arches, vaults and domes to walls and piers usually cause damage to the supporting walls or piers. The present chapter discusses the structural behaviour and performance of these elements in past earthquakes and reviews the numerical models used for the seismic assessment of these elements. Furthermore, different damage assessment approaches are reviewed and suggestions are made on further research.
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Conference papers on the topic "Pier arches"

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Svetlana, Shalamova. "KLIROVYE VEDOMOSTI AS A SOURSE FOR THE STUDY OF THE HISTORY OF THE ORTHODOX CHURCH AND THE PIER IN EASTERN SEBIRIA IN THE II HALF OF THE XIX CENTURY." In Archives in history. History in archives. Ottisk, 2018. http://dx.doi.org/10.32363/978-5-6041443-5-0-2018-172-178.

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Yan, Bin, Zhongshu Han, and Min Zhou. "Loading steps in analyzing the interaction between the tied arch continuous bridge and multiple tracks." In IABSE Conference, Kuala Lumpur 2018: Engineering the Developing World. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2018. http://dx.doi.org/10.2749/kualalumpur.2018.0624.

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<p>Because of the nonlinear interaction that exists between the bridge and the track, the conventional algorithm of calculating each longitudinal force separately and adding them up could cause certain error.</p><p>In this paper, the iterative formula of longitudinal resistance considering the loading history and loading order was derived, and one particular (77+3×156.8+77)m tied arch continuous bridge with four tracks was taken as an example to build an integrated model of large span continuous bridge with tied arch including the concrete-filled steel tube arch, suspender, beam, pier, pile foundation, multiple tracks and the rail expansion devices, and the influence that the loading history would have on the system of tied arch continuous bridge and the track was analyzed.</p><p>The study shows that while calculating the temperature effect, the temperature load should be applied on the rail, beam and arch at the same time. While loading to double tracks in opposite directions, the torque that pier top bears can be over 4000kN•m. When examining the substructure, various kinds of live load conditions should be considered. The result of rail stress acquired through the conventional algorithm will be 7% larger than the actualities while the horizontal force of pier top will be 8~21% larger.</p><p>In many cases, the torque of pier top acquired through the conventional algorithm has a rather large error compared with the actualities, so the loading steps considering the loading history was highly recommended to calculate the force condition of the substructure in this kind of bridge.</p>
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Rosales, Miguel. "Frances Appleton Pedestrian Bridge Design and Construction." In Footbridge 2022 (Madrid): Creating Experience. Madrid, Spain: Asociación Española de Ingeniería Estructural, 2021. http://dx.doi.org/10.24904/footbridge2022.239.

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<p>The Frances Appleton Pedestrian Bridge is an innovative steel arch bridge with a 69m main span and curvilinear approaches along the Charles River in Boston, Massachusetts. It is the first Americans with Disabilities Act fully accessible 4.3m wide bridge connecting Boston’s historic Beacon Hill neighborhood to the Esplanade Park and Charles River. An overall architectural and structural theme was followed in the design of all bridge components including the main arch, Y shaped approach piers, circular stairs and curved ramps. The bridge is light, elegant and well-integrated into the landscape complementing an adjacent historic landmark bridge and seamlessly blending into the waterfront context.</p>
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Ivanković, Ana Mandić, Marija Kušter Marić, Dominik Skokandić, Ela Njirić, and Josipa Šiljeg. "Finding the link between visual inspection and key performance indicators for road bridges." In IABSE Symposium, Guimarães 2019: Towards a Resilient Built Environment Risk and Asset Management. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/guimaraes.2019.0737.

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<p>Based on the rating from visual inspection and proposed weighting through component, system and network level, assessment procedure resulting with set of six most important Key Performance Indicators (KPI) for road bridges is presented. Those are: bridge condition assessment, structural safety, traffic safety, durability indicator, availability and bridge importance in the network. KPIs organised in the radar shaped diagram serve for priority repair ranking decisions. The procedure is elaborated at the sample of five actual bridges: two reinforced concrete arch bridges, one with solid and other with hollowed cross-sections; one frame type bridge with V shaped piers; one precast slab overpass; one solid slab continuous bridge with Y type piers. Bridges are built between 1958 and 2001 and are located either at the state or at the local roads in Croatia. Spans are varying from</p><p>9.5 to 72 m and overall lengths from 22 to 120 m.</p>
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Rojas, Alvaro, and Hernan Pinto. "Proposal of technical specifications for the “arch-tied strengthening method” applied on medium span bridges." In IABSE Congress, Christchurch 2021: Resilient technologies for sustainable infrastructure. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2021. http://dx.doi.org/10.2749/christchurch.2021.0695.

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<p>The service life of the bridges is affected by different factors that induce pathologies with possible consequences of collapse. Such factors influence the functionality, safety and stability. Therefore, engineering and research seek innovative solutions to address these problems in the long term.</p><p>One of the main problems presented by the bridges in Chile is that scour produced in the area of the piers. there are several conventional methods of strengthening with the aim of improving their performance against erosion and scour processes. During 2012 a new method of strengthening has been investigated: Tied-arch method, proposing the modification of the static schema through the construction of an network arch.</p><p>Based on this method, this paper provides the study and detailed proposal of constructive specifications of the main joints of its elements, including technical details (Drawing).</p>
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Buchin-Roulie, Vanessa, Nicolas Kaczkowski, Alexandre Gros, and Fabien Tesson. "Retrofitting of AYALA Bridge, an historic steel bridge in Manilla, Philippines." In IABSE Congress, Stockholm 2016: Challenges in Design and Construction of an Innovative and Sustainable Built Environment. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2016. http://dx.doi.org/10.2749/stockholm.2016.0632.

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Ayala Bridge, in the center of Manilla, is a steel arch bridge built in the 1950s. It is comprised of 2 simply supported steel bridges constructed with 3 trusses connected together. The bridge has to be retrofitted for conformity to new codes (traffic and seismic) and lifted by 70 cm for conformity to regulatory clearance. The retrofitting solution designed by Freyssinet was chosen because of its economy when considering both deck and foundations: it consists of minimizing the current seismic loads on piers and abutments, to get them lower than actual loads seen in the past under historic seismic and typhoon. Longitudinally, the 2 decks are linked together and extended with beams and new piles: the overall structure is working as a frame. Transversally, some seismic devices are placed. The overall steel structure is then strengthened using additional steel profiling and prestressing. Major parts of the work has been done with no traffic interruption at all.
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Peris-Fajarnés, Guillermo, Silvia Aparisi-Navarro, Ismael Lengua Lengua, and María Moncho-Santonja. "Uso de ecuaciones alometricas sobre ArcGis para el cálculo de biomasa: Aplicación para la medición de la biomasa del Pinus Halepensis Mill de la Comunidad Valenciana." In INNODOCT 2019. Valencia: Universitat Politècnica de València, 2019. http://dx.doi.org/10.4995/inn2019.2019.10947.

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La medición de la biomasa es clave para la planificación, gestión y estimación de los recursos biológicos de una determinada zona. Éstos se encuentran relacionados directamente con los aspectos medioambientales de la zona analizada. En la actualidad el proceso de estimación o medición de la biomasa se realiza a partir de los datos recogidos en campo, sumado a una serie de operaciones posteriores que consumen una gran cantidad de tiempo y recursos manuales pese al uso de herramientas como las hojas de cálculo. En este trabajo precisamente se integran las experiencias y procedimientos de cálculo de biomasa de autores como Ricardo Ruiz-Peinado dentro del conocido software ArcGis. Se ha desarrollado una herramienta en el entorno de este software para la automatización de la estimación de biomasa del Pinus halepensis Mill a partir de ecuaciones alométricas y datos del Inventario Forestal Nacional (IFN), ya que es una especie muy representativa de la Comunidad Valenciana, figurando como especie dominante en el 62 por ciento de la superficie arbolada de la misma. Esta herramienta, permitirá un ahorro de tiempo considerable para la obtención del dato, y su adaptación para el cálculo de biomasa de otras especies. El resultado de ésta herramienta es una tabla base de datos, cuya unidad mínima es la parcela forestal (según el IFN) de la cual obtenemos los datos de: recuento de Pinos carrascos de la parcela, pies por hectárea, alturas máximas y medias, área basimétrica, indicé de Hart-Becking y biomasa en kg por hectárea y toneladas por hectárea.
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Palomares Figueres, Maite, and Ana Portalés Mañanós. "Viviendas en hormigón prefabricado. La experiencia de GO.DB. en Campanar, Valencia. España. *** Dwellings in prefabricated concrete. The GO.DB. Experience in campanar." In 8º Congreso Internacional de Arquitectura Blanca - CIAB 8. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/ciab8.2018.7437.

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La comunicación presenta el único ejemplo de prefabricación residencial realizada en Valencia en la década de los sesenta, un bloque de ocho viviendas situado en el barrio de Campanar. Para su ejecución se empleó un diseño modular que implicaba, entre otros, el montaje de una planta de fabricación a pie de obra. En el proyecto realizado por los arquitectos GO.DB. se aplicó el concepto de “Viga hueca habitable”, materializada empleando los “Elementos Modulares” del sistema de prefabricación pesada “Modul-Arch”, basado en paneles de hormigón armado. Con este método se pretendía reunir estructura y cerramiento, aunque no fue posible. El paso de la idea a la ejecución final se llevó a cabo con las patentes de varios modelos de utilidad e industriales, necesarios para la realización de las viviendas. La influencia de Miguel Fisac subyace en los estudios de García-Ordoñez sobre el “vacío habitable”. Así también, los sistemas constructivos de los puentes de dovelas prefabricadas de hormigón serán una referencia para la construcción del conjunto de Campanar.***The communication presents the only example of resi- dential prefabrication carried out in Valencia in the 1960s, a block of eight houses located in the Campanar district. For its execution, a modular design was used which involved, among others, the as- sembly of a manufacturing plant on site. In the project carried out by the architects GO.DB. the concept of “Habitable hollow beam” was applied and its materialization using the “Modular Elements” of the heavy prefabrication system “Modul-Arch”, based on reinfor- ced concrete panels. With this method, the intention was to reunite structure and enclosure, although it was not possible. The steps taken from the idea to nal execution was carried out with the pa- tents of several utility and industrial models, necessary for building the houses. In uence of Miguel Fisac underlies García-Ordoñez’s studies on the “habitable beams”. Also, the constructive systems of prefabricated concrete bridge segments will be a reference for the construction of the Campanar complex.
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