Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Large-span cable-stayed bridge support replacement construction method
The invention relates to a construction method for replacing a large-span cable-stayed bridge support. The construction method comprises the steps that the maximum overtension force of a stay cable within the influence range of the position of the support is calculated; based on the finite element model of the large-span cable-stayed bridge and the maximum super-tension force of the stay cable, the maximum jacking force needed when the support is replaced is obtained; calculating the number of jacking jacks based on the required maximum jacking force; a support temporary supporting component and a jacking jack are installed; and the stay cable is tensioned to the maximum super-tension force of the stay cable, and the support is replaced. According to the invention, when the support is replaced, the stay cable is subjected to overtension, so that the jacking force required by support replacement construction is reduced, and the construction risk is reduced.
本申请涉及一种大跨度斜拉桥支座更换施工方法，其包括：计算支座位置影响范围内的斜拉索最大超张拉力；基于大跨度斜拉桥有限元模型和斜拉索最大超张拉力，获取支座更换时的所需最大顶升力；基于所需最大顶升力计算顶升千斤顶数量；安装支座临时支撑构件和顶升千斤顶；张拉斜拉索至斜拉索最大超张拉力，并更换支座。本发明中，在支座更换时同时对斜拉索进行超张拉，减小了支座更换施工所需的顶升力，降低了施工风险。
Large-span cable-stayed bridge support replacement construction method
The invention relates to a construction method for replacing a large-span cable-stayed bridge support. The construction method comprises the steps that the maximum overtension force of a stay cable within the influence range of the position of the support is calculated; based on the finite element model of the large-span cable-stayed bridge and the maximum super-tension force of the stay cable, the maximum jacking force needed when the support is replaced is obtained; calculating the number of jacking jacks based on the required maximum jacking force; a support temporary supporting component and a jacking jack are installed; and the stay cable is tensioned to the maximum super-tension force of the stay cable, and the support is replaced. According to the invention, when the support is replaced, the stay cable is subjected to overtension, so that the jacking force required by support replacement construction is reduced, and the construction risk is reduced.
本申请涉及一种大跨度斜拉桥支座更换施工方法，其包括：计算支座位置影响范围内的斜拉索最大超张拉力；基于大跨度斜拉桥有限元模型和斜拉索最大超张拉力，获取支座更换时的所需最大顶升力；基于所需最大顶升力计算顶升千斤顶数量；安装支座临时支撑构件和顶升千斤顶；张拉斜拉索至斜拉索最大超张拉力，并更换支座。本发明中，在支座更换时同时对斜拉索进行超张拉，减小了支座更换施工所需的顶升力，降低了施工风险。
Large-span cable-stayed bridge support replacement construction method
一种大跨度斜拉桥支座更换施工方法
MIAO RUNCHI (Autor:in) / ZHOU CHANGDONG (Autor:in) / DAI MINGJING (Autor:in) / LI XIANJIN (Autor:in) / WANG BIBO (Autor:in) / CHEN DEZHU (Autor:in) / LI QI (Autor:in) / LI ZHIQIANG (Autor:in) / HE DONGSHENG (Autor:in) / DONG YU (Autor:in)
21.06.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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