A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Combined construction method of large-span tied-arch bridgeby pushing beam and then lifting arch
The invention relates to a combined construction method of a large-span tied-arch bridge by firstly pushing a beam and then lifting an arch. The method is characterized in that a steel beam structureis assembledon a shore platform, and multi-point pushing in place is carried out; then an assembling support is erected on the steel beam, the arch rib is divided into three sections for on-beam low-position assembling, the three sections comprise the middle section arch rib integrally lifted in the middle and the side arch section arch ribs assembled at the two ends in situ, and the side arch section arch ribs at the two ends are spliced with the arch beam joints; the middle arch rib section is mounted by adopting a large-section integral lifting method, and is closed with arch ribs of the arch sections at the two ends after being lifted in place; and finally, sling installation, second-stage pavement and accessory structure construction are conducted. According to the construction method, the combined construction method of beam pushing, on-beam low-position arch splicing and overall arch segment lifting is adopted, the number of temporary piers in water can be reduced, the requirement for pushing equipment is reduced, the construction difficulty is lowered, and the construction method has high popularization significance in the aspects of applicability, economy, construction quality, construction period and the like; and the method has reference significance in engineering with similar construction conditions in the future.
一种大跨度系杆拱桥先梁顶推后拱提升的组合施工工法，其特征在于：先将钢梁结构在岸上平台组拼，进行多点顶推就位；随后在钢梁上搭设拼装支架，将拱肋分为三大节段进行梁上低位拼装，包括中部整体提升的中节段拱肋和两端原位拼装的边拱段拱肋，两端边拱段拱肋与拱梁节点拼接；中部拱肋段采用大节段整体提升法安装，提升到位后与两端边拱段拱肋合龙；最后进行吊索安装、二期铺装及附属结构施工。该施工工法采用先梁顶推、梁上低位拼拱、整体提升拱节段的组合施工工法，可减小水中临时墩数量，减小对顶推设备的要求，降低施工难度，其在适用性、经济性、施工质量、施工工期等诸多方面均具有较高推广意义，对今后类似建设条件的工程具有借鉴意义。
Combined construction method of large-span tied-arch bridgeby pushing beam and then lifting arch
The invention relates to a combined construction method of a large-span tied-arch bridge by firstly pushing a beam and then lifting an arch. The method is characterized in that a steel beam structureis assembledon a shore platform, and multi-point pushing in place is carried out; then an assembling support is erected on the steel beam, the arch rib is divided into three sections for on-beam low-position assembling, the three sections comprise the middle section arch rib integrally lifted in the middle and the side arch section arch ribs assembled at the two ends in situ, and the side arch section arch ribs at the two ends are spliced with the arch beam joints; the middle arch rib section is mounted by adopting a large-section integral lifting method, and is closed with arch ribs of the arch sections at the two ends after being lifted in place; and finally, sling installation, second-stage pavement and accessory structure construction are conducted. According to the construction method, the combined construction method of beam pushing, on-beam low-position arch splicing and overall arch segment lifting is adopted, the number of temporary piers in water can be reduced, the requirement for pushing equipment is reduced, the construction difficulty is lowered, and the construction method has high popularization significance in the aspects of applicability, economy, construction quality, construction period and the like; and the method has reference significance in engineering with similar construction conditions in the future.
一种大跨度系杆拱桥先梁顶推后拱提升的组合施工工法，其特征在于：先将钢梁结构在岸上平台组拼，进行多点顶推就位；随后在钢梁上搭设拼装支架，将拱肋分为三大节段进行梁上低位拼装，包括中部整体提升的中节段拱肋和两端原位拼装的边拱段拱肋，两端边拱段拱肋与拱梁节点拼接；中部拱肋段采用大节段整体提升法安装，提升到位后与两端边拱段拱肋合龙；最后进行吊索安装、二期铺装及附属结构施工。该施工工法采用先梁顶推、梁上低位拼拱、整体提升拱节段的组合施工工法，可减小水中临时墩数量，减小对顶推设备的要求，降低施工难度，其在适用性、经济性、施工质量、施工工期等诸多方面均具有较高推广意义，对今后类似建设条件的工程具有借鉴意义。
Combined construction method of large-span tied-arch bridgeby pushing beam and then lifting arch
一种大跨度系杆拱桥先梁顶推后拱提升的组合施工工法
SHAO CHANGYU (author) / TANG HU (author) / ZHANG HONGJIN (author) / CHEN LIANG (author) / ZHOU WEIXIANG (author)
2021-02-09
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
Jacking and lifting combined large-span arch structure construction method
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