A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction method of epoxy steel strand stay cable of large-span cable-stayed bridge
The invention relates to a construction method of an epoxy steel strand stay cable of a large-span cable-stayed bridge, and belongs to the field of bridge cable construction. In the method, when single cable hanging is carried out, a steel strand is guided upwards from a bridge floor (or an upper cross beam), passes through a tower top high tower cable penetrating machine, then is lowered into the tower to penetrate through a tensioning end anchorage device to reach a pipe opening of a cable guide pipe outside the tower, then downwards penetrates through a main beam fixing end anchorage device from the inside of an HDPE pipe, clamping pieces are tightened at the two ends of a tower beam respectively, and then a single tensioning jack is installed for tensioning and pre-tightening; and the next cycle is continued after tensioning is completed. And the stay cables are installed one by one from top to bottom and from the outer side to the inner side, and single stay cable is tensioned through an equivalent tensioning method till the stay cable hanging work is completed. The construction efficiency and accuracy are greatly improved, the installation accuracy, the installation quality and the installation speed of the stay cable are guaranteed, and good economic benefits and social benefits are obtained.
本发明涉及一种大跨径斜拉桥环氧钢绞线斜拉索的施工方法，属于桥梁缆索施工领域。方法中进行单根挂索时，将钢绞线从桥面(或上横梁)往上引，通过塔顶高塔穿索机后下放塔内穿过张拉端锚具，至塔外索导管管口，然后从HDPE管内向下穿过主梁固定端锚具后，塔梁两端分别打紧夹片，然后安装单根张拉千斤顶进行张拉预紧，张拉完毕继续下一个循环。按从上往下，从外侧到内侧的顺序逐根安装，采用等值张拉法进行单根张拉，直至完成斜拉索挂索工作。大幅提高了施工效率与精确性，保证了斜拉索的安装精度、安装质量和安装速度，取得了良好的经济效益和社会效益。
Construction method of epoxy steel strand stay cable of large-span cable-stayed bridge
The invention relates to a construction method of an epoxy steel strand stay cable of a large-span cable-stayed bridge, and belongs to the field of bridge cable construction. In the method, when single cable hanging is carried out, a steel strand is guided upwards from a bridge floor (or an upper cross beam), passes through a tower top high tower cable penetrating machine, then is lowered into the tower to penetrate through a tensioning end anchorage device to reach a pipe opening of a cable guide pipe outside the tower, then downwards penetrates through a main beam fixing end anchorage device from the inside of an HDPE pipe, clamping pieces are tightened at the two ends of a tower beam respectively, and then a single tensioning jack is installed for tensioning and pre-tightening; and the next cycle is continued after tensioning is completed. And the stay cables are installed one by one from top to bottom and from the outer side to the inner side, and single stay cable is tensioned through an equivalent tensioning method till the stay cable hanging work is completed. The construction efficiency and accuracy are greatly improved, the installation accuracy, the installation quality and the installation speed of the stay cable are guaranteed, and good economic benefits and social benefits are obtained.
本发明涉及一种大跨径斜拉桥环氧钢绞线斜拉索的施工方法，属于桥梁缆索施工领域。方法中进行单根挂索时，将钢绞线从桥面(或上横梁)往上引，通过塔顶高塔穿索机后下放塔内穿过张拉端锚具，至塔外索导管管口，然后从HDPE管内向下穿过主梁固定端锚具后，塔梁两端分别打紧夹片，然后安装单根张拉千斤顶进行张拉预紧，张拉完毕继续下一个循环。按从上往下，从外侧到内侧的顺序逐根安装，采用等值张拉法进行单根张拉，直至完成斜拉索挂索工作。大幅提高了施工效率与精确性，保证了斜拉索的安装精度、安装质量和安装速度，取得了良好的经济效益和社会效益。
Construction method of epoxy steel strand stay cable of large-span cable-stayed bridge
一种大跨径斜拉桥环氧钢绞线斜拉索的施工方法
JIN PING (author) / CHEN DANDAN (author) / CHEN JUN (author) / KUANG JIANGUO (author) / SHAN JI'AN (author) / JIANG PING (author) / BAI LIYI (author) / CHEN XU (author) / ZHOU JUE (author)
2023-12-19
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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