Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Demounting and building synchronous construction method for in-situ reconstruction extradosed cable-stayed bridge
The invention relates to a dismounting and building synchronous construction method of an in-situ reconstruction extradosed cable-stayed bridge, which comprises the following steps of: before dismounting an old bridge, respectively erecting new bridge girder splicing brackets on two sides of each old bridge tower along the longitudinal direction of a river, and when the old bridge is dismounted, splicing new bridge girders on the new bridge girder splicing brackets from the far end to the direction of a main tower by using a floating crane; after an old bridge main tower and a bearing platform are dismantled, a new bridge bearing platform is constructed in situ, a horizontal rotating disc is installed on the new bearing platform, a newly-built bridge main tower is constructed on the new bearing platform, the new main tower is supported on the rotating disc, a stay cable between the main tower and a main beam is connected and tensioned, a new bridge main beam assembling support is unloaded, the vertical force of a new bridge is supported by the rotating disc, and the new bridge main beam is horizontally rotated in place. And a mid-span closure section and a side-span closure section are installed, and in-situ reconstruction construction of the cable-stayed bridge is completed. Synchronous construction of old bridge dismantling and new bridge in-situ reconstruction can be achieved, so that the construction period is greatly shortened, and the time of occupying a main channel is shortened.
本发明涉及一种原位重建矮塔斜拉桥的拆建同步施工方法，旧桥拆除前，沿河流纵向在每个旧桥桥塔两侧分别搭设新桥主梁拼装支架，拆除旧桥的同时，利用浮吊在新桥主梁拼装支架上从远端向主塔方向拼装新桥主梁，旧桥主塔及承台拆除后，在原位施工新桥承台，并在新承台上安装平转转盘，在新承台上施工新建桥主塔，新主塔支撑在转盘上，连接主塔与主梁间斜拉索并张拉，新桥主梁拼装支架卸荷，使新桥的竖向力由转盘支撑，将新桥主梁平转到位，安装中跨合拢段及边跨合拢段，完成斜拉桥原位重建施工。本发明可以实现旧桥拆除与原位重建新桥同步施工，从而大幅缩短工期，减小占用主航道时间。
Demounting and building synchronous construction method for in-situ reconstruction extradosed cable-stayed bridge
The invention relates to a dismounting and building synchronous construction method of an in-situ reconstruction extradosed cable-stayed bridge, which comprises the following steps of: before dismounting an old bridge, respectively erecting new bridge girder splicing brackets on two sides of each old bridge tower along the longitudinal direction of a river, and when the old bridge is dismounted, splicing new bridge girders on the new bridge girder splicing brackets from the far end to the direction of a main tower by using a floating crane; after an old bridge main tower and a bearing platform are dismantled, a new bridge bearing platform is constructed in situ, a horizontal rotating disc is installed on the new bearing platform, a newly-built bridge main tower is constructed on the new bearing platform, the new main tower is supported on the rotating disc, a stay cable between the main tower and a main beam is connected and tensioned, a new bridge main beam assembling support is unloaded, the vertical force of a new bridge is supported by the rotating disc, and the new bridge main beam is horizontally rotated in place. And a mid-span closure section and a side-span closure section are installed, and in-situ reconstruction construction of the cable-stayed bridge is completed. Synchronous construction of old bridge dismantling and new bridge in-situ reconstruction can be achieved, so that the construction period is greatly shortened, and the time of occupying a main channel is shortened.
本发明涉及一种原位重建矮塔斜拉桥的拆建同步施工方法，旧桥拆除前，沿河流纵向在每个旧桥桥塔两侧分别搭设新桥主梁拼装支架，拆除旧桥的同时，利用浮吊在新桥主梁拼装支架上从远端向主塔方向拼装新桥主梁，旧桥主塔及承台拆除后，在原位施工新桥承台，并在新承台上安装平转转盘，在新承台上施工新建桥主塔，新主塔支撑在转盘上，连接主塔与主梁间斜拉索并张拉，新桥主梁拼装支架卸荷，使新桥的竖向力由转盘支撑，将新桥主梁平转到位，安装中跨合拢段及边跨合拢段，完成斜拉桥原位重建施工。本发明可以实现旧桥拆除与原位重建新桥同步施工，从而大幅缩短工期，减小占用主航道时间。
Demounting and building synchronous construction method for in-situ reconstruction extradosed cable-stayed bridge
一种原位重建矮塔斜拉桥的拆建同步施工方法
LU GUANNAN (Autor:in) / GAN SHUKUAN (Autor:in) / LI YOUQING (Autor:in) / WU JIAN (Autor:in) / ZHANG HUAWU (Autor:in) / LIU ZHANGUO (Autor:in) / WANG CHUNJIAN (Autor:in) / MA SHUIYING (Autor:in) / ZENG XIANGJI (Autor:in) / BAO YANGYANG (Autor:in)
01.11.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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