The ultimate strength of reinforced concrete (RC) rectangular members subjected to combined bending,
shear and torsion is obtained from the limit analysis proposed in the present paper. Based on a warped failure
surface determined by external loads, and a reasonable assumed stress distribution balancing external loads but
not violating the yield condition, the bending-shear-torsion interaction can be derived from equilibrium conditions.
According to the definition of lower-bound theorem in limit analysis, the calculated ultimate loads will be carried
safely by the structure. The present method is a simple approach to obtain carrying capacities for RC elements
under complex external loads. After comparing with the test results, a good agreement has been observed. The
present method can be extended to explain the failure mechanism of RC members subjected to axial loads, and
it is possible to develop a simple unified theory of RC members for engineering.
CHEN Xia* (陈 溪), LIU Xi-lab (刘西拉)
. Limit Analysis for Reinforced Concrete Rectangular Members Under Bending, Shear and Torsion[J]. Journal of Shanghai Jiaotong University(Science), 2014
, 19(2)
: 129
-138
.
DOI: 10.1007/s12204-014-1481-y
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