Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Midspan closure method of steel structure cable-stayed bridge
The invention discloses a mid-span closure method of a steel structure cable-stayed bridge in the field of bridge construction. The mid-span closure method comprises the steps that a pre-adjustment value delta adjustment of a 0 # steel beam is calculated based on the design length L < set >, the operation space L < operation >, the unstressed length l of each steel beam, the variable quantity l < temperature > and the compression quantity l < compression >; the installation position of the 0 # section steel beam is adjusted according to the pre-adjustment value delta with the center line of the main tower as the reference; other steel beams are built along the two sides of the 0 # steel beam, the unbalanced force of the horizontal component force of the inhaul cables borne by the steel beams is controlled to move towards the midspan direction and is smaller than the sum of the friction resistance borne by the steel beams, and a closure opening is formed between the two main towers; a closure section steel beam is hoisted to a closure opening, a traction device and a limiting device are installed at the closure opening, and closure operation is conducted through the traction device and the limiting device; steel beams on the two sides of the closure opening and closure section steel beams are subjected to closure welding; the problem that the mid-span closure operation of the cable-stayed bridge is difficult due to the influence of the temperature and the complex tensioning machine tool is solved.
本发明公开了桥梁施工领域的一种钢结构斜拉桥的中跨合龙方法，包括：基于设计长度L设、操作空间L操以及各段钢梁的长度l无应力、变化量l温度和压缩量l压缩计算0#段钢梁的预调整值Δ调整；以主塔中心线为基准根据预调整值Δ调整调整0#段钢梁的安装位置；沿0#段钢梁两侧搭建其他各段钢梁，控制各段钢梁受到拉索水平分力的不平衡力往中跨方向且小于各段钢梁受到摩阻力的总和，两主塔之间形成合龙口；将合龙段钢梁吊装至合龙口，在合龙口处安装牵引装置及限位装置，利用牵引装置及限位装置进行合龙操作；将合龙口两侧的钢梁与合龙段钢梁进行合龙焊接；以解决受温度和张拉机具复杂影响导致斜拉桥中跨合龙操作难的问题。
Midspan closure method of steel structure cable-stayed bridge
The invention discloses a mid-span closure method of a steel structure cable-stayed bridge in the field of bridge construction. The mid-span closure method comprises the steps that a pre-adjustment value delta adjustment of a 0 # steel beam is calculated based on the design length L < set >, the operation space L < operation >, the unstressed length l of each steel beam, the variable quantity l < temperature > and the compression quantity l < compression >; the installation position of the 0 # section steel beam is adjusted according to the pre-adjustment value delta with the center line of the main tower as the reference; other steel beams are built along the two sides of the 0 # steel beam, the unbalanced force of the horizontal component force of the inhaul cables borne by the steel beams is controlled to move towards the midspan direction and is smaller than the sum of the friction resistance borne by the steel beams, and a closure opening is formed between the two main towers; a closure section steel beam is hoisted to a closure opening, a traction device and a limiting device are installed at the closure opening, and closure operation is conducted through the traction device and the limiting device; steel beams on the two sides of the closure opening and closure section steel beams are subjected to closure welding; the problem that the mid-span closure operation of the cable-stayed bridge is difficult due to the influence of the temperature and the complex tensioning machine tool is solved.
本发明公开了桥梁施工领域的一种钢结构斜拉桥的中跨合龙方法，包括：基于设计长度L设、操作空间L操以及各段钢梁的长度l无应力、变化量l温度和压缩量l压缩计算0#段钢梁的预调整值Δ调整；以主塔中心线为基准根据预调整值Δ调整调整0#段钢梁的安装位置；沿0#段钢梁两侧搭建其他各段钢梁，控制各段钢梁受到拉索水平分力的不平衡力往中跨方向且小于各段钢梁受到摩阻力的总和，两主塔之间形成合龙口；将合龙段钢梁吊装至合龙口，在合龙口处安装牵引装置及限位装置，利用牵引装置及限位装置进行合龙操作；将合龙口两侧的钢梁与合龙段钢梁进行合龙焊接；以解决受温度和张拉机具复杂影响导致斜拉桥中跨合龙操作难的问题。
Midspan closure method of steel structure cable-stayed bridge
一种钢结构斜拉桥的中跨合龙方法
QUE SHUIJIE (Autor:in) / YANG WENSHUANG (Autor:in) / YAN HEZHONG (Autor:in) / XU AN (Autor:in) / YIN BIN (Autor:in) / CHU MINHONG (Autor:in) / JUNG JI-MAN (Autor:in) / GE LU (Autor:in) / XI PEIPEI (Autor:in)
04.07.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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