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| Avtorstvo: |
Matej FISCHINGER // 1.06 Objavljeno vabljeno predavanje na znanstveni konferenci
Peter FAJFAR // 1.06 Objavljeno vabljeno predavanje na znanstveni konferenci
Tatjana ISAKOVIĆ // 1.06 Objavljeno vabljeno predavanje na znanstveni konferenci
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| Leto: |
1997 |
| Citat: |
FISCHINGER, Matej, ISAKOVIĆ, Tatjana, FAJFAR,
Peter. Seismic analysis of viaduct structures - Which method to choose?. V:
FAJFAR, Peter (ur.), KRAWINKLER, Helmut (ur.). Seismic design methodologies
for the next generation of codes : proceedings of the International Workshop on
Seismic Design Methologies for the Next Generation of Codes, Bled, Slovenia,
24-27 June 1997. Rotterdam; Brookfield: A. A. Balkema, cop. 1997, str.
347-358, graf. prikazi. |
| Povzetek: |
A number of levels of analytical approximations
for viaduct structures are possible. Since the criteria for the choice of an
appropriate method are not clearly defined, an attempt is made to provide some
guidance to the choice. Several idealized viaducts with continuous deck are
analyzed in the transverse direction. In addition, a typical viaduct structure
is used as a practical example. Some important parameters that influence the
response of viaducts are identified. They include: the stiffness ratio of the
deck and piers, the ratio of the torsional and translational stiffness of the
structure, eccentricity, and boundary conditions at the abutments. An attempt is
made to quantify some of these parameters. Although viaducts are simple in their
structural concept, it is the general conclusion, that their seismic response in
the transverse direction may be quite complex. Therefore, some degree of
sophistication is needed in their analysis. Simplified inelastic procedures are
likely to be the most useful in the future generation of codes.A general purpose
procedure of this type is still to be defined
Pri analizi viaduktov so
možne različne poenostavitve, vendar kriteriji za izbiro ustrezne metode analize
še vedno niso jasno določeni. Zato smo poskusili oblikovati določena navodila za
izbiro načina analize. Analizirali smo določeno število poenostavljenih
viaduktov s kontinuirno preklado v njihovi prečni smeri, ter eno tipično
konstrukcijo viadukta. Ugotovili smo parametre, ki pomembno vplivajo na odziv
viaduktov. Ti parametri so: razmerje togosti prekladne konstrukcije in togosti
stebrov, razmerje torzijske in translacijske togosti konstrukcije,
ekscentričnost, in robni pogoji nad krajnima opornikoma. Določene parametre smo
opredelili tudi kvantitativno. Na podlagi rezultatov lahko sklepamo, da je lahko
odziv viaduktov zelo kompleksen, ne glede na njihovo relativno enostavno
konstrukcijsko zasnovo. Zato so za njihovo analizo potrebne bolj natančne
metode, kot so na primer različni postopki poenostavljene neelastične analize.
Splošno veljavna poenostavljena metoda neelastične analize pa bi morala biti
šele definirana [COBISS.SI-ID 315489]
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| Tipologija: |
1.06 Objavljeno vabljeno predavanje na znanstveni konferenci |
| COBISS ID |
315489 Polni zapis iz sistema COBISS |
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Vpisal 2009/06/10 11:56
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