Control of Construction Stresses in Launched Bridges

The construction stresses of an incrementally launched bridge must be analyzed with great care. Launch stress analysis includes several load cases and combinations and requires a considerable amount of calculation, which suggests accurate initial pre-sizing. A spreadsheet for parametric analysis of the nose-deck interaction streamlines and accelerates the design of launched bridges and minimizes the risk of remaking the launch stress analysis should pre-sizing turn out inadequate.

In 23 pages, Control of Construction Stresses in Launched Bridges explores an analytical model for the nose-deck interaction and a step-by-step procedure for its optimization. It explains the use of parametric design charts for control of self-weight bending and shear and includes all the equations needed to generate the design charts. But why reinventing the wheel? The eManual also includes the design spreadsheet for immediate productivity with pre-sizing optimization of launched bridges.

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