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Full-Text Articles in Engineering
Outside The Site Boundary, Timothy Kwan Fai Chan
Outside The Site Boundary, Timothy Kwan Fai Chan
Faculty of Science & Technology (THEi)
No abstract provided.
Effects Of Beam-Column Depth Ratio On Seismic Behaviour Of Non-Seismic Detailed Reinforced Concrete Beam-Column Joints, Ying Liu, Ho-Fai Wong, Sung-Hei Luk, Ching-Kit Tong, Hei Lam
Effects Of Beam-Column Depth Ratio On Seismic Behaviour Of Non-Seismic Detailed Reinforced Concrete Beam-Column Joints, Ying Liu, Ho-Fai Wong, Sung-Hei Luk, Ching-Kit Tong, Hei Lam
Faculty of Science & Technology (THEi)
Four reinforced concrete exterior beam-column joints with open anchorage beam reinforcement, which are manufactured to simulate those in existing reinforced concrete framed buildings, are tested under reversed cyclic loads simulating earthquake excitation. The particular emphasis of this project is given to the effects of the beam-column depth ratio and the stirrup ratio in joints on the shear strength and seismic behaviour of the exterior joints without seismically designed details. The experimental results indicate that the stirrup placed in the beam-column joint cores can effectively improve the shear strength of the joint and enhance the seismic performance, and the shear strength …
Effect Of Limited Tension Stiffening On Behavior Of Reinforced Concrete Panels In Shear., Xueying Wang, Jun Shang Kuang
Effect Of Limited Tension Stiffening On Behavior Of Reinforced Concrete Panels In Shear., Xueying Wang, Jun Shang Kuang
Faculty of Science & Technology (THEi)
The principal tensile strength of cracked concrete is not well defined in existing models for predicting the shear response of reinforced concrete (RC) membrane elements; hence, the shear strength of RC elements is generally overestimated due to the unrealistic decreasing slope of tensile stress as the crack accumulates. In this paper, the effect of limited tension-stiffening behavior of cracked RC panels under pure shear stresses is investigated by proposing an analytical model named as the tension-stiffening fixed-angle truss model (TFTM). The proposed model includes the limited tension-stiffening effect of post-cracking reinforced concrete and adopts the fixed-angle theory. In the analysis …
Fragility Curves For Buildings In Hong Kong, Sung-Hei Luk, Ho-Fai Wong
Fragility Curves For Buildings In Hong Kong, Sung-Hei Luk, Ho-Fai Wong
Faculty of Science & Technology (THEi)
Fragility curves are the tools for evaluating the damage of structural or nonstructural components under different levels of ground excitation. It is also the necessary information for calculating the life-cycle cost of buildings during their design period. In this paper, development of fragility curves for buildings designed based on HK standard is presented. Two prototype models, which include three-storey and tenstorey reinforced concrete rigid frames, were considered. Incremental dynamic analysis was conducted under nine sets of past earthquake records with scaled peak ground accelerations. Maximum inter-storey drift ratio was selected as the damage indices and three performance levels were considered. …
Effects Of Eccentricity On Seismic Behavior Of Non-Seismically Designed Reinforced Concrete Beam-Column Joint, Ho-Fai Wong, Ying Liu, Sung-Hei Luk, Pok-Man Lee, Wing-Hei Kwong
Effects Of Eccentricity On Seismic Behavior Of Non-Seismically Designed Reinforced Concrete Beam-Column Joint, Ho-Fai Wong, Ying Liu, Sung-Hei Luk, Pok-Man Lee, Wing-Hei Kwong
Faculty of Science & Technology (THEi)
The staggering numbers of eccentric reinforced concrete beam-column joints without seismic design details were used in existing RC frame building due to geometrical constraints, which implied high susceptibility of the building structures to anticipated seismic risk. Three exterior RC beam-column joints were fabricated and tested, which were applied reversed cyclic loads to simulate seismic action. In this study, the effects of stirrup ratio in joints and the eccentricity which is defined as the distance between the axis of the beam and column on seismic performance are investigated. The test results provide a further understanding of the failure mode and shear …
Effect Of Limited Tension Stiffening In Rc Elements Under Cyclic Loads., Xueying Wang, Jun Shang Kuang
Effect Of Limited Tension Stiffening In Rc Elements Under Cyclic Loads., Xueying Wang, Jun Shang Kuang
Faculty of Science & Technology (THEi)
The tension capacity in cracked concrete is not well defined in existing shear models for reinforced concrete (RC) membrane elements under cyclic reversed loading, and the shear strength of RC elements is consequently overestimated due to the deviated decreasing branch of envelope of cyclic tensile stress-strain relationship. In this paper, the cyclic effect of limited tension stiffening of cracked RC elements is evaluated by proposing an analytical model named as the cyclic tension-stiffening fixed-angle truss model (CTFTM). The proposed model, based on fixed-angle theory, integrates unloading and reloading rules and accumulated damage into the limited tension-stiffening effect under cyclic loading …