長大吊橋における安全率の最適配分に関する考察
1988 年 1988 巻 398 号 p. 167-175
詳細
1988 年 1988 巻 398 号 p. 167-175
The optimal allocation of safety factors is discussed for long-span suspension bridge. Not only statistical uncertainties but also uncertainties due to unknown factors or gross errors such as human errors are taken into account. The optimal allocation of the safety factors for cables and girder in suspension bridge has been obtained by the simple reliability optimization of structural system. The results suggest to increase the safety factor of girders for wind load and to decrease the safety factor of cables for dead load. The current code appears to be not balanced and revision is suggested.
