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 引用本文: 陶海, 沈祥福. 斜拉桥索力优化的强次可行序列二次规划法[J]. 力学学报, 2006, 38(3): 381-384.
Strongly subfeasible sequential quadratic programming method of cable tension optimization for cable-stayed bridges[J]. Chinese Journal of Theoretical and Applied Mechanics, 2006, 38(3): 381-384.
 Citation: Strongly subfeasible sequential quadratic programming method of cable tension optimization for cable-stayed bridges[J]. Chinese Journal of Theoretical and Applied Mechanics, 2006, 38(3): 381-384.

## Strongly subfeasible sequential quadratic programming method of cable tension optimization for cable-stayed bridges

• 摘要: 提出了一种斜拉桥索力优化的实用方法-强次可行序列二次规划法. 该方法通过建立斜拉桥索力优化的非线性规划模型，以主梁和索塔的弯曲应变能为目标函数，斜拉索的索力为设计变量，结构应力和索力为约束条件，计入大跨度斜拉桥各种几何非线性因素的影响，采用强次可行序列二次规划算法进行优化求解，确定斜拉桥成桥合理状态的索力. 运用该方法对某斜拉桥进行索力优化，结果表明该方法简单、有效.

Abstract: A practical optimization method(strongly subfeasible sequential quadratic programming method) of cabletension optimization for cable-stayed bridges is presented, witha model for nonlinear optimization programming to obtain the forcein cables of cable-stayed bridge, in which the bendingstrain energy of the beams and cable tower of the bridge is the objectivefunction, and the cable forces are the design variable, the stress inthe structureor the cable force is the constraint condition. In order to determine theprestressing force of the cables, the influence of various geometricalnonlinearities is considered, and the strongly subfeasible sequential quadratic programmingmethod is used to solve the program. This method is used to obtain the set ofoptimal cable tensions of a cable-stayed bridge using the spatial nonlinearfinite element program. The result of analysis shows that themethod is effective.

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