A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Three-span cable crane for cable-stayed bridge girder installation and construction method thereof
The invention provides a three-span cable crane for cable-stayed bridge girder installation and a construction method thereof. The three-span cable crane comprises cables arranged on the center line of a bridge in the bridge direction, tower frames and ground anchors, the tower frames and the ground anchors are arranged on the two sides of the bridge respectively, cable saddles are arranged at the tops of the tower frames, the two ends of the cables pass through the cable saddles at the tops of the two tower frames and are connected with the ground anchors, the middles of the cables are supported through the cable saddles arranged on two cable towers of the bridge, and operation mechanisms used for hoisting or balancing the horizontal stress of the cable towers are arranged on the portions, located on the two sides of each cable tower, of the cables. The three-span cable crane is adopted to achieve vertical hoisting of all beam sections, matching of a floating crane, a large sliding beam and a beam storage support is not needed, control of the construction period is facilitated, large lifting equipment does not need to be erected on the bridge floor, the problem of abutted seam slab staggering caused by inconsistent beam section matching transverse deformation is effectively solved, harm of weld joint additional stress is reduced, other temporary loads of the bridge floor are reduced, and cable force of the stay cable and linear control of the girder are facilitated.
本申请提供一种用于斜拉桥主梁安装的三跨缆索吊机及其施工方法，所述三跨缆索吊机包括设于桥梁顺桥向中心线上的缆索、塔架及地锚，塔架及地锚分别在桥梁两侧各设一组，塔架的顶部设有索鞍，缆索的两端通过两个塔架顶部的索鞍并连接至地锚处，且缆索中部通过设于桥梁两个索塔上的索鞍进行支托，缆索位于每个索塔的两侧设有用作吊装或平衡索塔水平受力的运转机构。采用三跨缆索吊机实现所有梁段的垂直吊装，无需浮吊、大型滑梁、存梁支架配合，有利于控制工期，无需在桥面搭设大型提吊设备，有效地减少梁段匹配横向变形不一致造成的拼缝错台的问题，减少焊缝附加应力的危害，减少桥面其他临时荷载，有利于斜拉索索力、主梁线型控制。
Three-span cable crane for cable-stayed bridge girder installation and construction method thereof
The invention provides a three-span cable crane for cable-stayed bridge girder installation and a construction method thereof. The three-span cable crane comprises cables arranged on the center line of a bridge in the bridge direction, tower frames and ground anchors, the tower frames and the ground anchors are arranged on the two sides of the bridge respectively, cable saddles are arranged at the tops of the tower frames, the two ends of the cables pass through the cable saddles at the tops of the two tower frames and are connected with the ground anchors, the middles of the cables are supported through the cable saddles arranged on two cable towers of the bridge, and operation mechanisms used for hoisting or balancing the horizontal stress of the cable towers are arranged on the portions, located on the two sides of each cable tower, of the cables. The three-span cable crane is adopted to achieve vertical hoisting of all beam sections, matching of a floating crane, a large sliding beam and a beam storage support is not needed, control of the construction period is facilitated, large lifting equipment does not need to be erected on the bridge floor, the problem of abutted seam slab staggering caused by inconsistent beam section matching transverse deformation is effectively solved, harm of weld joint additional stress is reduced, other temporary loads of the bridge floor are reduced, and cable force of the stay cable and linear control of the girder are facilitated.
本申请提供一种用于斜拉桥主梁安装的三跨缆索吊机及其施工方法，所述三跨缆索吊机包括设于桥梁顺桥向中心线上的缆索、塔架及地锚，塔架及地锚分别在桥梁两侧各设一组，塔架的顶部设有索鞍，缆索的两端通过两个塔架顶部的索鞍并连接至地锚处，且缆索中部通过设于桥梁两个索塔上的索鞍进行支托，缆索位于每个索塔的两侧设有用作吊装或平衡索塔水平受力的运转机构。采用三跨缆索吊机实现所有梁段的垂直吊装，无需浮吊、大型滑梁、存梁支架配合，有利于控制工期，无需在桥面搭设大型提吊设备，有效地减少梁段匹配横向变形不一致造成的拼缝错台的问题，减少焊缝附加应力的危害，减少桥面其他临时荷载，有利于斜拉索索力、主梁线型控制。
Three-span cable crane for cable-stayed bridge girder installation and construction method thereof
用于斜拉桥主梁安装的三跨缆索吊机及其施工方法
CHEN YULIANG (author) / YANG HONGLEI (author) / DIAO XIANJUE (author) / LING HUAKUN (author)
2021-08-27
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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