大跨度钢管混凝土拱桥吊装过程的索力逆分析

Inverse Analysis of Cable Forces on Filled SteelFubular Arch Bridge with Long Spanin Process of Installation

针对大跨度钢管砼拱桥在钢管吊装和分段砼泵送的施工过程中，需要通过扣索来保持拱形和分担砼的重量．保证施工质量和安全，控制索力是一种重要手段．通过计算力学的逆分析方法，给出扣索的索力，经算例验证是合理的，其计算程序可作为此类桥型的优化施工软件．

オn process of installation of steel tube and segmental pumpdelivery of concrete for construction of concretefilled steel tubular arch bridge with a long span,bucklecables are required to hold arch shape and to share weight of concrete.In order to ensure quality and safety of construction,an important means to control the bucklecable forces is used.This paper deduces a solution of the bucklecable forces from inverse analysis method of computational mechanics.The method proves to be reasonable through a counting example.The designed computer program has prospect in application for optimal construction of this kind of bridge. 