Ultimate Strength Domain of Reinforced Concrete Sections under Biaxial Bending and Axial Load

2013 ◽  
Vol 110 (1) ◽  
Keyword(s):  
Reinforced Concrete ◽  
Ultimate Strength ◽  
Axial Load ◽  
Biaxial Bending

Closed form ultimate strength of multi-rectangle reinforced concrete sections under axial load and biaxial bending

2009 ◽  
Vol 6 (6) ◽  
pp. 505-521 ◽  
Author(s):  
V. Dias da Silva ◽  
M.H.F.M. Barros ◽  
E.N.B.S. Julio ◽  
C.C. Ferreira
Keyword(s):  
Reinforced Concrete ◽  
Closed Form ◽  
Ultimate Strength ◽  
Axial Load ◽  
Biaxial Bending

Short reinforced concrete column capacity under biaxial bending and axial load

2000 ◽  
Vol 27 (6) ◽  
pp. 1173-1182 ◽  
Author(s):  
H P Hong
Keyword(s):  
Reinforced Concrete ◽  
Probabilistic Analysis ◽  
Axial Load ◽  
Failure Surface ◽  
Biaxial Bending ◽  
Reinforced Concrete Column ◽  
Rc Columns ◽  
Nonlinear Stress ◽  
Modeling Errors ◽  
Error Optimization

The paper describes the development of a simple theoretical approach in estimating the capacity of short reinforced concrete (RC) columns under biaxial bending and axial load. The developed approach considers the nonlinear stress-strain relations of concrete and reinforcing steel and does not make the assumption about the limiting strain of extreme compression fiber of concrete. The solution is obtained using a nonlinearly constrained optimization algorithm. The approach was used to estimate the theoretical capacities of many tested RC columns found in the literature. A probabilistic analysis of the modeling errors was carried out using the ratios of the test-to-predicted results. The probabilistic analysis was extended to include two simplified theoretical methods: the reciprocal load method given by Bresler and the failure surface method given by Hsu.Key words: biaxial bending, modeling error, optimization, probability distribution.

Seismic Performance of Reinforced Concrete Rectangular Hollow Bridge Piers

2013 ◽  
Vol 859 ◽  
pp. 95-99
Author(s):  
Yan Zhao ◽  
Hong Yu Jiang ◽  
Jie Gu ◽  
Ru Qin Wang
Keyword(s):  
Reinforced Concrete ◽  
Energy Dissipation ◽  
Bearing Capacity ◽  
Seismic Performance ◽  
Axial Load ◽  
Large Scale ◽  
Experimental Models ◽  
Bridge Piers ◽  
Biaxial Bending ◽  
Energy Dissipation Capacity

Hollow rectangular reinforced concrete piers have been widely used in tall-column and long-span bridges. Two large-scale experimental models of the hollow reinforced concrete bridge piers were built to study the seismic performance of the piers subjected to biaxial bending under constant axial load. The objective is to evaluate seismic performances of the model piers and the factors affecting the seismic performance of the model piers by comparing their failure mechanism, bearing capacity, ductility, energy dissipation capacity, etc. The results show that the hollow rectangular specimen experienced flexural failure with plastic hinges formed at the bottom of the piers when subjected to combined axial load and biaxial bending. The bearing capacity of the specimen increases greatly and the ductility decrease insignificantly as the axial compression ratio increases from 0.1 to 0.2, while the energy dissipation capacity is increased by 121.8%, however, the absolute value of total cumulative hysteretic energy is not magnificent.

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