The Structural Engineer > Archive > Volume 70 (1992) > Issues > Issue 23/24 > Back-Analysing the Bending Moment in a Concrete Diaphragm Wall
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Back-Analysing the Bending Moment in a Concrete Diaphragm Wall

A parametric study has been carried out to investigate the range of possible bending moments that can be obtained when back-analysing field data from a concrete diaphragm wall. A recent opportunity to monitor the performance of a diaphragm wall in Cambridge has yielded data which has been used here as an illustrative example. The chief uncertainties are found to arise from the choice of concrete model, the evaluation of concrete parameters, and the difficulties in interpreting field measurements. A factor of nearly two has been found between the highest and lowest values of bending moment that can be inferred from these particular field measurements. The study has clear implications for future monitoring work. C.W.W. Ng, M.L. Lings and D.F.T. Nash