Parametrical analysis of partially encased composite columns with fiber reinforced concrete subjected to uniaxial and biaxial non-constant bending moments

Marinho, Anderson; Krahl, Pablo Augusto; Almeida, Saulo José de Castro; Pereira, Margot Fabiana; Siqueira, Gustavo Henrique

doi:10.1016/j.istruc.2021.08.085

Cited by 7 publications

(1 citation statement)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The nonlinearity of reinforced concrete when subjected to biaxial bending was investigated and assessed (Patrick et al, 2021, Romero et al, 2011, Seco et al, 2021, Zhang et al, 2021). The maximum bending moment, shear force, and axial force of each member was calculated using an envelope diagram of the absolute value of the internal force of each member derived from the dynamic response analysis of the structure.…”

Section: Dynamic Response Analysismentioning

confidence: 99%

Analysis of the seismic performance of a large underground station structure in complex stratum considering the influence of axial force

Bao,

Liu,

Shen

et al. 2023

Advances in Structural Engineering

View full text Add to dashboard Cite

The large underground structure in saturated stratum is vulnerable to float during an earthquake. This results in a plethora of problems, such as uneven settlement, large internal force and structure damage. In this study, the seismic behavior of a three-story, two-span subway station in complex saturated stratum was investigated through water-soil fully coupled 3D finite element method. In the analysis, the nonlinear soil behavior was described by a cyclic mobility model and the structure was calculated using a nonlinear constitutive model which can consider the influence of axial force on its bending moment. Joints elements were used to model the contact surface between soil and structure. The development of the soil displacement and internal force of the station structure at different times during a huge earthquake was examined. The bearing capacity of the station structure members was analyzed. The results indicated that the vertical displacement was spatially distributed. The larger additional seismic stresses appeared in the bottom slab and side wall. Failed elements were observed in both the walls and slabs, and the walls were more easily damaged than the slab. The results provide useful reference for the large underground structure seismic design in the construction of urban underground space.

show abstract