Browsing Civil and Environmental Engineering by Author "Xu, Lei"
Now showing items 1-8 of 8
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Effects of beam axial deformations on storey-based critical gravity loads in tension-only semi-braced steel frames
Ma, Terence; Zhang, Linbo; Xu, Lei (Elsevier, 2021-04-01)If the beams in a structural frame are not connected to slabs or other rigid diaphragms, the beams will axially deform when the frame is subjected to lateral loads, reducing the critical loads and increasing local deflections ... -
Effects of column imperfections on capacity of steel frames in variable loading
Ma, Terence; Xu, Lei (Journal of Constructional Steel Research, 2019-11-15)The presence of column initial imperfections in a steel frame can increase deflections and decrease its load carrying capacity. A method is proposed for evaluating the lateral stiffness, inter-storey displacement and ... -
New exact series solutions for transverse vibration of rotationally-restrained orthotropic plates
Zhang, Sigong; Xu, Lei; Li, Rui (Elsevier, 2019-01-01)The exact series solutions of plates with general boundary conditions have been derived by using various methods such as Fourier series expansion, improved Fourier series method, improved superposition method and finite ... -
Shear deformation effects on stability of unbraced steel frames in variable loading
Ma, Terence; Xu, Lei (Journal of Constructional Steel Research, 2019-11-11)The generalized lateral stiffness equation of a semi-rigidly connected frame with accounting for shear deformation is derived in this paper. The lateral stiffness equation can be used to determine the critical loads of ... -
Stability-based fire resistance duration of unbraced steel frames
Ma, Terence; Xu, Lei (Journal of Structural Fire Engineering, 2020)Purpose The collapse of a structure resulting from the instability of steel frames due to fire is the worst failure mode to consider in fire-structural engineering, and should be avoided. The purpose of this paper is to ... -
Storey-based stability of multi-storey steel semi-braced and unbraced frames with semi-rigid connections
Ma, Terence; Xu, Lei (American Society of Civil Engineers, 2021-01)A simplified method is proposed for evaluating the stability of multi-storey, steel semi-braced and unbraced frames with semi-rigid connections. The proposed method decomposes a frame into individual storeys and evaluates ... -
Storey-based stability of steel frames subjected to post-earthquake fire
Ma, Terence; Xu, Lei; Wang, Weiyong (Fire Technology, 2020-02)Post-earthquake fires occur after earthquakes and have commonly been encountered throughout history. The fires are particularly deadly and threaten the stability of buildings as possible structural damages caused by seismic ... -
Storey-based stability of unbraced steel frames under piece-linear temperature distributions
Ma, Terence; Xu, Lei (Elsevier, 2019-05-21)There are many cases where the elastic modulus of a structural member will vary longitudinally, such as when a steel column is heated by fire. In such a case, the fire can compromise the integrity of the structural frame. ...