Read e-book online Seismic Design and Assessment of Bridges: Inelastic Methods PDF
By Andreas J. Kappos (auth.), Andreas J. Kappos, M. Saiid Saiidi, M. Nuray Aydınoğlu, Tatjana Isaković (eds.)
The publication makes a speciality of using inelastic research tools for the seismic review and layout of bridges, for which the paintings performed to this point, albeit fascinating and helpful, is however essentially below that for structures. even if a few worthy literature at the topic is at the moment to be had, the main complex inelastic research equipment that emerged over the last decade are at the moment came across in basic terms within the specialized research-oriented literature, similar to technical journals and convention court cases.
Hence the main target of this ebook is two-fold, first to provide all very important equipment belonging to the aforementioned class in a uniform and adequate for his or her knowing and implementation size, and to supply additionally a serious point of view on them by means of together with chosen case-studies in which multiple tools are utilized to a selected bridge and by means of supplying a few severe reviews at the obstacles of the person equipment and on their relative potency.
The booklet can be a precious device for either researchers and training engineers facing seismic layout and review of bridges, through either making the equipment and the analytical instruments to be had for his or her implementation, and by means of supporting them to choose the tactic that most closely fits the person bridge tasks that every engineer and/or researcher faces.
Read or Download Seismic Design and Assessment of Bridges: Inelastic Methods of Analysis and Case Studies PDF
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The e-book specializes in using inelastic research tools for the seismic evaluate and layout of bridges, for which the paintings performed to this point, albeit fascinating and beneficial, is however in actual fact lower than that for constructions. even though a few precious literature at the topic is at present on hand, the main complex inelastic research equipment that emerged over the past decade are at present stumbled on basically within the specialized research-oriented literature, corresponding to technical journals and convention court cases.
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Extra resources for Seismic Design and Assessment of Bridges: Inelastic Methods of Analysis and Case Studies
6b shows an idealized force-deformation envelope for exterior shear keys. This idealized hysteretic model was demonstrated in terms of two models which correspond to the concrete and steel components. The above mentioned skew bridge studies followed the procedures presented by Megally et al. (2001) for the capacity determination of external shear keys. While the modelling of this unique hysteretic response behaviour may be accomplished relatively directly using analysis software such as Drain-2DX or Drain-3DX (Fig.
1993). As a consequence, post-yield stiffness ratios (r in Fig. 9b) of the order of 5–15% are expected. The maximum displacement capacity of LRB is governed by the allowable shear strain of rubber and by the global stability of the device under vertical load. Hence, it is governed by the total height of rubber and the cross section dimensions of the device (diameter D for circular bearings, side dimensions bx and by for rectangular bearings). Typically, design displacements between 120 mm and 350 mm, corresponding to rubber shear strains of 100–120% and lead ductility ratios of 10–20, can be assumed for LRB, although much greater rubber shear strains (200–250%) and ductility ratios (20–40) can be cyclically sustained (Skinner et al.
4 m high. Piers were fully-fixed at the base and pinned at the deck connection. The bridge was pseudo-dynamically tested with substructuring such that the deck was numerically simulated whereas the piers were tested at the reaction wall facility of the ELSA laboratory at Ispra by imposing top displacements and measuring the forces. 15 shows the comparison of experimental and analytical responses for the tall (Fig. 15a) and short (Fig. 15b) piers (Delgado et al. 2002). Concerning the numerical simulation, each pier was modelled by a single fixed length plastic hinge element with the measured lateral displacement history imposed on the top.
Seismic Design and Assessment of Bridges: Inelastic Methods of Analysis and Case Studies by Andreas J. Kappos (auth.), Andreas J. Kappos, M. Saiid Saiidi, M. Nuray Aydınoğlu, Tatjana Isaković (eds.)