This paper proposes a new simplified restoring force characteristic model of the bending moment–rotation angle relationship for square concrete-filled steel tube (CFT) beam-columns to estimate elastoplastic flexural-shear behavior from short slender beam-columns. The CFT beam-column incorporates reduction in strength after ultimate strength. proposed is multilinear and involves cracking point, ...

Abstract: Reduced Beam Section (RBS) and Drilled Beam Section (DBS) are seismic moment resistant frame connections, introduced after 1994 Northridge earthquake. RBS connection has been tested under cyclic loading and showed acceptable performance. In this paper, seismic behavior of Drilled Beam Section (DBS) connection is studied numerically using finite element method. A drilled beam section ...

The aim of this paper is to present results of testing a full scale reinforced concrete T connection by static loading. The connection is a T connection representing a beam-column connection. The beam and column had a square cross section with a 300 mm dimension. The height of the column was 2.9 m and the clear beam length was 1.4 m. The connection was initially tested to failure. Galvanised st...

A bstract We investigate the connection between spacetime wormholes and ensemble averaging in context of higher spin AdS 3 /CFT 2 . Using techniques from modular bootstrap combined with some holographic inputs, we evaluate partition function a Euclidean wormhole gravity. The fixed sectors dual CFT exhibit features that starkly go beyond conventional random matrix ensembles: power-law ramps spec...

In multi-dimensional signal processing the Cliiord Fourier transform (CFT or in the 2-D case: quater-nionic Fourier transform/QFT) is a consequent extension of the complex valued Fourier transform. Hence, we need a fast algorithm in order to compute the transform in practical applications. Since the CFT is based on a corresponding Cliiord algebra (CA) and CAs are not commutative in general, we ...

We establish an exact connection between the Choptuik scaling parameter for the three-dimensional BTZ black hole, and the imaginary part of the quasinormal frequencies for scalar perturbations. Via the AdS/CFT correspondence, this leads to an interpretation of Choptuik scaling in terms of the timescale for return to equilibrium of the dual conformal field theory.