Sử dụng lý thuyết biến dạng cắt tính toán động lực học của dầm bê tông cốt thanh composite aramid trên nền đàn hồi chịu tác dụng của hệ dao động di động

Abstract

This paper presents the finite element algorithm and results on dynamic analysis of concrete beams reinforced by composite aramid bars resting on elastic foundation subjected to moving oscillator with a constant velocity. Considering the influence of shear deformation on the dynamic response of beams using shear deformation theory with a univariate function that varies with beam height is a very meaningful and necessary issue for engineers. beam structures with medium and large heights - one of the structural types widely used in the field of engineering and construction today. In the numerical study, the author focused on considering the influence of factors such as: shear deformation (have shear deformation, don’t have shear deformation), structure (arrangement of reinforcing bars) and parameters of the elastic foundation to respond to the displacement and acceleration of the beam. The research results are the basis for choosing appropriate solutions for beam-like structures on deformed foundations or on deformed connections such as bridge cranes, house beam frames, bridge girders, etc. for applications in the construction industry. civil works as well as construction of special works for socio-economic development and ensuring national security and defense.

Keywords: Dynamic, shear deformation, composite aramid, moving oscillator