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A platform for research: civil engineering, architecture and urbanism
Continuous pushing method for guide-beam-free large-span steel beam of approach bridge
The invention discloses an approach bridge guide-beam-free large-span steel beam continuous pushing method which comprises the steps that a traction point is arranged at the front end of a steel beam, a pushing jack is arranged on a main bridge tower, a pushing platform is erected on the side, away from a main bridge, of an approach bridge, and sliding way beams and lateral limiting devices are installed on the pushing platform and the tops of all bridge piers of the approach bridge; then, the steel beams are spliced on the pushing platform section by section, a traction point and a pushing jack are connected through a dragging steel strand, pushing construction of the steel beams can be started, a temporary inclined guy cable tower is installed at the upper end of the first-span steel beam, a stay cable connected with the front ends of the steel beams in an anchoring mode is arranged on the temporary inclined guy cable tower, and a balance weight is arranged on the rear portion of the first-span steel beam; and meanwhile, wind-resistant cables are mounted on the first-span steel beam and located on the two sides of the temporary inclined inhaul cable tower. The temporary inclined inhaul cable tower is designed at the upper end of the first-span steel beam for reinforcement, and guide-beam-free incremental launching construction is achieved.
本发明公开了一种引桥无导梁大跨度钢梁连续顶推方法，牵引点设置在钢梁的前端，顶推千斤顶设置在主桥桥塔上，顶推平台搭设在引桥远离主桥的一侧，在顶推平台与引桥各桥墩墩顶安装滑道梁与侧向限位装置，然后在顶推平台上逐段拼装各节段钢梁，利用拖拉钢绞线将牵引点和顶推千斤顶连接，即可开始钢梁的顶推施工，在第一跨钢梁上端安装有临时斜拉索塔，临时斜拉索塔上设有与钢梁前端锚固连接的斜拉索，在第一跨钢梁后部设有配重，同时在第一跨钢梁上位于临时斜拉索塔的两侧安装有抗风索。本申请通过在第一跨钢梁上端设计临时斜拉索塔进行加固，实现了无导梁顶推施工。
Continuous pushing method for guide-beam-free large-span steel beam of approach bridge
The invention discloses an approach bridge guide-beam-free large-span steel beam continuous pushing method which comprises the steps that a traction point is arranged at the front end of a steel beam, a pushing jack is arranged on a main bridge tower, a pushing platform is erected on the side, away from a main bridge, of an approach bridge, and sliding way beams and lateral limiting devices are installed on the pushing platform and the tops of all bridge piers of the approach bridge; then, the steel beams are spliced on the pushing platform section by section, a traction point and a pushing jack are connected through a dragging steel strand, pushing construction of the steel beams can be started, a temporary inclined guy cable tower is installed at the upper end of the first-span steel beam, a stay cable connected with the front ends of the steel beams in an anchoring mode is arranged on the temporary inclined guy cable tower, and a balance weight is arranged on the rear portion of the first-span steel beam; and meanwhile, wind-resistant cables are mounted on the first-span steel beam and located on the two sides of the temporary inclined inhaul cable tower. The temporary inclined inhaul cable tower is designed at the upper end of the first-span steel beam for reinforcement, and guide-beam-free incremental launching construction is achieved.
本发明公开了一种引桥无导梁大跨度钢梁连续顶推方法，牵引点设置在钢梁的前端，顶推千斤顶设置在主桥桥塔上，顶推平台搭设在引桥远离主桥的一侧，在顶推平台与引桥各桥墩墩顶安装滑道梁与侧向限位装置，然后在顶推平台上逐段拼装各节段钢梁，利用拖拉钢绞线将牵引点和顶推千斤顶连接，即可开始钢梁的顶推施工，在第一跨钢梁上端安装有临时斜拉索塔，临时斜拉索塔上设有与钢梁前端锚固连接的斜拉索，在第一跨钢梁后部设有配重，同时在第一跨钢梁上位于临时斜拉索塔的两侧安装有抗风索。本申请通过在第一跨钢梁上端设计临时斜拉索塔进行加固，实现了无导梁顶推施工。
Continuous pushing method for guide-beam-free large-span steel beam of approach bridge
一种引桥无导梁大跨度钢梁连续顶推方法
WANG JINGYUE (author) / ZHANG SHENGLIN (author) / ZHOU DAQING (author) / ZHAO MINGFU (author) / SUN ZHENGMAO (author) / TIAN LI (author) / QUAN CHENG (author) / TAN ZISHU (author) / LI FANG (author) / LIN RUSHAN (author)
2023-08-01
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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