scholarly journals Assessment of concrete bridges subjected to ground motion with an arbitrary angle of incidence: static and dynamic approach

2012 ◽  
Vol 11 (2) ◽  
pp. 581-605 ◽  
Author(s):  
Ioannis F. Moschonas ◽  
Andreas J. Kappos
Keyword(s):  
Ground Motion ◽  
Concrete Bridges ◽  
Angle Of Incidence ◽  
Arbitrary Angle ◽  
Dynamic Approach

Response of a vertical strain seismometer to body waves

1966 ◽  
Vol 56 (4) ◽  
pp. 785-791
Author(s):  
Indra N. Gupta
Keyword(s):  
Finite Length ◽  
Finite Depth ◽  
Vertical Displacement ◽  
Infinite Medium ◽  
Body Waves ◽  
Poisson's Ratio ◽  
Angle Of Incidence ◽  
Arbitrary Angle ◽  
Vertical Strain ◽  
Phase Relationships

abstract Expressions have been derived for vertical strain due to P and SV type waves arriving at an arbitrary angle of incidence within a semi-infinite medium. The amplitude and phase relationships between vertical strain and vertical displacement have been investigated for both wave types, assuming a Poisson's ratio of 0.25. The effect of finite depth and finite length of the vertical strain instrument has been examined and found to be significant especially for small angles of incidence.

Reflection of Dilatational Waves at the Edge of a Plate

1957 ◽  
Vol 24 (2) ◽  
pp. 219-227
Author(s):  
T. R. Kane
Keyword(s):  
Shear Wave ◽  
Plane Stress ◽  
Plate Theory ◽  
Angle Of Incidence ◽  
Two Dimensional ◽  
Arbitrary Angle ◽  
Reflected Waves ◽  
Dilatational Wave ◽  
Special Cases

Abstract The reflection of straight-crested dilatational waves at the edge of a semi-inflnite plate is studied in terms of a two-dimensional plate theory and in terms of the theory of generalized plane stress. It is found that, in general, a dilatational wave propagated toward the edge at an arbitrary angle of incidence gives rise to three reflected waves; namely, two dilatational waves and a shear wave. A number of special cases are investigated in detail.

Reflection of elastic waves from a linear transition layer

1966 ◽  
Vol 56 (2) ◽  
pp. 511-526
Author(s):  
Ravindra N. Gupta
Keyword(s):  
Plane Wave ◽  
Material Properties ◽  
Transition Layer ◽  
Elastic Waves ◽  
Wave Reflection ◽  
Reflection Coefficients ◽  
Angle Of Incidence ◽  
Arbitrary Angle ◽  
S Wave ◽  
Incidence Plane

abstract A separation of P- and S-wave potentials is achieved for an inhomogeneous medium in which density is constant and Lame's parameters, λ and μ, are assumed to vary as λ/λ1 = μ/μ1 = (1 + bz)2 where λ1, μ1 and b are constants. The resulting equations are solved for an arbitrary angle of incidence. Plane wave reflection coefficients are obtained for the situation when the material mentioned above forms a transition layer between two homogeneous, elastic half-spaces. First and/or second-order discontinuities in material properties are permitted at the boundaries of the transition layer. Some numerical results are given.

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