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A platform for research: civil engineering, architecture and urbanism
Construction method for positively hoisting and positively hanging arch rib sections of steel tube basket arch bridge
The invention provides a construction method for forward hoisting and forward hanging of arch rib sections of a steel pipe basket arch bridge. The construction method comprises the following steps: s1, installing the first arch rib section; s2, determining a cable saddle pre-fixing point of the cable saddle at the top of the tower by taking the joint end of the installed arch rib section as a reference; s3, fixing the two cable saddles to the cable saddle pre-fixing points, and tensioning the main cable to form a hoisting straight line, wherein the hoisting straight line passes through the joint end of the installed arch rib section and the two cable saddles; s4, hoisting the pre-installed arch rib sections to the joint ends of the installed arch rib sections through a cable system; s5, connecting the pre-installed arch rib sections and the installed arch rib sections through connector flanges; and S6, further accurately adjusting the arch rib elevation of the pre-installed arch rib section and the axis of the pre-installed arch rib section. According to the invention, the on-site construction condition and the construction environment adaptability of the tower are high, the steel consumption is reduced, cable saddle torsion can be avoided, and therefore the stability of the hoisting rope in the running process is guaranteed, and the construction safety is improved.
本发明提供一种钢管提篮拱桥拱肋节段正吊正挂的施工方法，包括以下步骤：步骤S1：安装首个拱肋节段；步骤S2：以已安装拱肋节段的接头端为参考，确定索鞍在塔架顶部的索鞍预固定点；步骤S3：将两个索鞍均固定于索鞍预固定点，使主索张拉形成吊装直线，吊装直线经过已安装拱肋节段的接头端及两个索鞍；步骤S4：利用缆索系统将预安装拱肋节段吊装至已安装拱肋节段的接头端处；步骤S5：将预安装拱肋节段与已安装拱肋节段进行接头法兰连接；步骤S6：进一步精确调整预安装拱肋节段的拱肋标高及预安装拱肋节段的轴线，其塔架的现场施工条件和施工环境适应性强，减少了用钢量且能够避免索鞍扭转，从而保证起重绳运行过程中的稳定性，增加施工的安全性。
Construction method for positively hoisting and positively hanging arch rib sections of steel tube basket arch bridge
The invention provides a construction method for forward hoisting and forward hanging of arch rib sections of a steel pipe basket arch bridge. The construction method comprises the following steps: s1, installing the first arch rib section; s2, determining a cable saddle pre-fixing point of the cable saddle at the top of the tower by taking the joint end of the installed arch rib section as a reference; s3, fixing the two cable saddles to the cable saddle pre-fixing points, and tensioning the main cable to form a hoisting straight line, wherein the hoisting straight line passes through the joint end of the installed arch rib section and the two cable saddles; s4, hoisting the pre-installed arch rib sections to the joint ends of the installed arch rib sections through a cable system; s5, connecting the pre-installed arch rib sections and the installed arch rib sections through connector flanges; and S6, further accurately adjusting the arch rib elevation of the pre-installed arch rib section and the axis of the pre-installed arch rib section. According to the invention, the on-site construction condition and the construction environment adaptability of the tower are high, the steel consumption is reduced, cable saddle torsion can be avoided, and therefore the stability of the hoisting rope in the running process is guaranteed, and the construction safety is improved.
本发明提供一种钢管提篮拱桥拱肋节段正吊正挂的施工方法，包括以下步骤：步骤S1：安装首个拱肋节段；步骤S2：以已安装拱肋节段的接头端为参考，确定索鞍在塔架顶部的索鞍预固定点；步骤S3：将两个索鞍均固定于索鞍预固定点，使主索张拉形成吊装直线，吊装直线经过已安装拱肋节段的接头端及两个索鞍；步骤S4：利用缆索系统将预安装拱肋节段吊装至已安装拱肋节段的接头端处；步骤S5：将预安装拱肋节段与已安装拱肋节段进行接头法兰连接；步骤S6：进一步精确调整预安装拱肋节段的拱肋标高及预安装拱肋节段的轴线，其塔架的现场施工条件和施工环境适应性强，减少了用钢量且能够避免索鞍扭转，从而保证起重绳运行过程中的稳定性，增加施工的安全性。
Construction method for positively hoisting and positively hanging arch rib sections of steel tube basket arch bridge
一种钢管提篮拱桥拱肋节段正吊正挂的施工方法
QIN DAYAN (author) / WEI HUA (author) / MA WENHUI (author) / FU LIUYUAN (author) / ZHANG QINGPU (author) / YE GUANXIONG (author) / LIANG JING (author) / ZHOU YULIAN (author) / WANG TAO (author) / HUANG JIANJUN (author)
2021-05-11
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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