A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for determining section of inhaul cable for reinforcing arch feet of deck type arch bridge
The invention relates to the technical field of deck type arch bridge reinforcement, and particularly discloses an inhaul cable section determination method for deck type arch bridge arch foot reinforcement, which comprises the following steps: (1) respectively establishing a stress model of an original arch structure and a stress model of a reinforcement structure after arrangement of an inhaul cable; (2) acquiring the most unfavorable load position of the hogging moment of the arch springing of the original arch structure stress model and the reinforced structure stress model, and applying the same load; (3) deducing arch foot bending moment expressions of the original arch structure stress model and the reinforced structure stress model; (4) fitting an expression y (t) of the reduction amplitude y of the hogging moment of the arch foot relative to the rigidity ratio t; and (5) establishing a relationship by utilizing the reduction amplitude of the bending resistance bearing capacity of the arch foot section and the reduction amplitude of the hogging moment of the arch foot after the inhaul cable is arranged. According to the inhaul cable section determining method for reinforcing the deck type arch bridge arch feet, on the premise that the good reinforcing effect is guaranteed, waste of inhaul cable materials is reduced, and the purpose of saving the construction cost is achieved.
本发明涉及上承式拱桥加固技术领域，其具体公开了上承式拱桥拱脚加固的拉索截面确定方法，包括以下步骤：(1)分别建立原拱结构的受力模型和设置拉索后的加固结构受力模型；(2)获取原拱结构受力模型与加固结构受力模型的拱脚负弯矩最不利荷载位置，并施加相同的载荷；(3)推导出原拱结构受力模型以及加固结构受力模型的拱脚弯矩表达式；(4)拟合出拱脚负弯矩减小幅度y关于刚度比t的表达式y(t)；(5)利用拱脚截面抗弯承载力下降的幅度与设置拉索后拱脚负弯矩减小幅度建立关系。本发明的上承式拱桥拱脚加固的拉索截面确定方法，在确保达到良好加固效果的前提下，减少拉索材料的浪费，达到节约建造成本的目的。
Method for determining section of inhaul cable for reinforcing arch feet of deck type arch bridge
The invention relates to the technical field of deck type arch bridge reinforcement, and particularly discloses an inhaul cable section determination method for deck type arch bridge arch foot reinforcement, which comprises the following steps: (1) respectively establishing a stress model of an original arch structure and a stress model of a reinforcement structure after arrangement of an inhaul cable; (2) acquiring the most unfavorable load position of the hogging moment of the arch springing of the original arch structure stress model and the reinforced structure stress model, and applying the same load; (3) deducing arch foot bending moment expressions of the original arch structure stress model and the reinforced structure stress model; (4) fitting an expression y (t) of the reduction amplitude y of the hogging moment of the arch foot relative to the rigidity ratio t; and (5) establishing a relationship by utilizing the reduction amplitude of the bending resistance bearing capacity of the arch foot section and the reduction amplitude of the hogging moment of the arch foot after the inhaul cable is arranged. According to the inhaul cable section determining method for reinforcing the deck type arch bridge arch feet, on the premise that the good reinforcing effect is guaranteed, waste of inhaul cable materials is reduced, and the purpose of saving the construction cost is achieved.
本发明涉及上承式拱桥加固技术领域，其具体公开了上承式拱桥拱脚加固的拉索截面确定方法，包括以下步骤：(1)分别建立原拱结构的受力模型和设置拉索后的加固结构受力模型；(2)获取原拱结构受力模型与加固结构受力模型的拱脚负弯矩最不利荷载位置，并施加相同的载荷；(3)推导出原拱结构受力模型以及加固结构受力模型的拱脚弯矩表达式；(4)拟合出拱脚负弯矩减小幅度y关于刚度比t的表达式y(t)；(5)利用拱脚截面抗弯承载力下降的幅度与设置拉索后拱脚负弯矩减小幅度建立关系。本发明的上承式拱桥拱脚加固的拉索截面确定方法，在确保达到良好加固效果的前提下，减少拉索材料的浪费，达到节约建造成本的目的。
Method for determining section of inhaul cable for reinforcing arch feet of deck type arch bridge
上承式拱桥拱脚加固的拉索截面确定方法
YANG TAO (author) / LI CHUNHUA (author) / HAO TIANZHI (author) / CHEN MING YU (author) / LONG XIAYI (author) / CHEN QIFENG (author) / NING JIEJUN (author) / CHEN XIAOMING (author)
2022-12-27
Patent
Electronic Resource
Chinese
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