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A platform for research: civil engineering, architecture and urbanism
Partial cable-stayed bridge cable force optimization method and device considering operation load
The invention discloses a partial cable-stayed bridge cable force optimization method and device considering an operation load. The method comprises the steps of fitting a set of reasonable construction tension cable force preliminarily; establishing a partial cable-stayed bridge model, dividing construction stages, adding all permanent effects (including initially planned construction cable force) and temporary effects in the construction stages, calculating initial finished bridge cable force and a cable force influence matrix, adding all variable effects into the initial cable force model,and calculating a structural response envelope value and structural resistance in a structural limit state; performing iterative calculation by using an optimization algorithm based on an influence matrix, considering all operation loads and limit state combinations thereof based on bridge design specifications, optimizing construction cable force by using a particle swarm algorithm, and the objective being to guarantee the safety of the construction process without secondary cable adjustment, so that the structure of the bridge has the highest safety margin in the bearing capacity or the normal use limit state under the action of the standard load in the operation stage.
本发明公开了一种考虑运营荷载的部分斜拉桥索力优化方法及装置，初拟一组合理施工张拉索力；建立部分斜拉桥模型，划分施工阶段，添加所有永久作用（包括初拟施工索力）及施工阶段临时作用，计算初始成桥索力及索力影响矩阵，在初始索力模型中添加所有可变作用并计算结构极限状态下结构响应包络值和结构抗力，基于影响矩阵运用优化算法进行迭代计算，考虑了基于桥梁设计规范的所有运营荷载及其极限状态组合，运用粒子群算法对施工索力进行寻优，其目标是在保证施工过程安全且无需二次调索的前提下，使桥梁在运营阶段荷载规范荷载作用下结构在承载能力或正常使用极限状态下具有最高的安全余量。
Partial cable-stayed bridge cable force optimization method and device considering operation load
The invention discloses a partial cable-stayed bridge cable force optimization method and device considering an operation load. The method comprises the steps of fitting a set of reasonable construction tension cable force preliminarily; establishing a partial cable-stayed bridge model, dividing construction stages, adding all permanent effects (including initially planned construction cable force) and temporary effects in the construction stages, calculating initial finished bridge cable force and a cable force influence matrix, adding all variable effects into the initial cable force model,and calculating a structural response envelope value and structural resistance in a structural limit state; performing iterative calculation by using an optimization algorithm based on an influence matrix, considering all operation loads and limit state combinations thereof based on bridge design specifications, optimizing construction cable force by using a particle swarm algorithm, and the objective being to guarantee the safety of the construction process without secondary cable adjustment, so that the structure of the bridge has the highest safety margin in the bearing capacity or the normal use limit state under the action of the standard load in the operation stage.
本发明公开了一种考虑运营荷载的部分斜拉桥索力优化方法及装置，初拟一组合理施工张拉索力；建立部分斜拉桥模型，划分施工阶段，添加所有永久作用（包括初拟施工索力）及施工阶段临时作用，计算初始成桥索力及索力影响矩阵，在初始索力模型中添加所有可变作用并计算结构极限状态下结构响应包络值和结构抗力，基于影响矩阵运用优化算法进行迭代计算，考虑了基于桥梁设计规范的所有运营荷载及其极限状态组合，运用粒子群算法对施工索力进行寻优，其目标是在保证施工过程安全且无需二次调索的前提下，使桥梁在运营阶段荷载规范荷载作用下结构在承载能力或正常使用极限状态下具有最高的安全余量。
Partial cable-stayed bridge cable force optimization method and device considering operation load
一种考虑运营荷载的部分斜拉桥索力优化方法及装置
CAO HONGYOU (author) / HUANG XIN (author) / LI TAO (author) / KANG JUNTAO (author)
2021-01-29
Patent
Electronic Resource
Chinese
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