Earthquake-Induced Structural Pounding by Robert Jankowski, Sayed Mahmoud

By Robert Jankowski, Sayed Mahmoud

This books analyzes diverse ways to modeling earthquake-induced structural pounding and exhibits the result of the reports on collisions among structures and among bridge segments in the course of floor motions. elements concerning the mitigation of pounding results in addition to the layout of buildings vulnerable to pounding also are mentioned.

Earthquake-induced structural pounding among insufficiently separated structures, and among bridge segments, has been again and again saw in the course of floor motions. The reviews after earthquakes point out that it may possibly bring about restricted neighborhood harm in terms of average seismic occasions, or in substantial destruction or perhaps the cave in of colliding constructions in the course of serious floor motions. Pounding in structures is generally brought on by the variations in dynamic houses among buildings, which lead them to vibrate out-of-phase lower than seismic excitation. against this, when it comes to longer bridge constructions, it really is extra frequently the seismic wave propagation impression that induces collisions among superstructure segments in the course of earthquakes.

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By Robert Jankowski, Sayed Mahmoud

This books analyzes diverse ways to modeling earthquake-induced structural pounding and exhibits the result of the reports on collisions among structures and among bridge segments in the course of floor motions. elements concerning the mitigation of pounding results in addition to the layout of buildings vulnerable to pounding also are mentioned.

Earthquake-induced structural pounding among insufficiently separated structures, and among bridge segments, has been again and again saw in the course of floor motions. The reviews after earthquakes point out that it may possibly bring about restricted neighborhood harm in terms of average seismic occasions, or in substantial destruction or perhaps the cave in of colliding constructions in the course of serious floor motions. Pounding in structures is generally brought on by the variations in dynamic houses among buildings, which lead them to vibrate out-of-phase lower than seismic excitation. against this, when it comes to longer bridge constructions, it really is extra frequently the seismic wave propagation impression that induces collisions among superstructure segments in the course of earthquakes.

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Jankowski and S. 1007/978-3-319-16324-6_3 35 36 3 Pounding Between Buildings analysis of pounding between buildings, in which floors of structures were modelled by single four-node plane stress elements and walls by four linear beamcolumn elements. The non-linear analyses of interactions between two neighbouring buildings using FEM were also conducted in other studies (see Jankowski 2007a, b, 2009, 2012; Sołtysik and Jankowski 2013). 1 Pounding-Involved Response of Buildings Modelled as SDOF Systems Let us first consider two buildings as elastic SDOF systems so as to conduct a basic analysis on pounding-involved response of structures under earthquake excitation.

Dynam. : Dynamics of Structures: Theory and Applications to Earthquake Engineering. : A study on some impacts between metal bodies by a piezoelectric method. Proc. Roy. Soc. : Pounding of buildings modelled by an impact oscillator. Earthquake Eng. Struct. Dynam. : Effect of pounding and restrainers on seismic response of multiple-frame bridges. J. Struct. Eng. : Polymeric bearings—a new base isolation system to reduce structural damage during earthquakes. Key Eng. Mater. : Analytical prediction of experimental building pounding.

On the other hand, the results indicate (see Figs. 2b) that the behaviour of a stiffer and heavier right building is nearly unaffected by collisions. 8 %. The results of the parametric investigation (see Figs. 1 Displacement (m) (left building) 37 6 10 6 5 10 6 4 10 6 3 10 6 2 10 6 6 1 10 0 0 2 4 Time (s) Fig. 1 Response time histories for buildings. a Displacement histories. 12 Gap (m) Fig. 2 Peak displacement with respect to the gap size between buildings. a Left building. 2 Natural period (s) Fig.

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