A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Arch stiffening continuous beam steel pipe arch crown pushing construction technology
The invention discloses an arch stiffening continuous beam steel pipe arch crown pushing construction technology. The construction technology comprises the following steps that S1, a temporary support is erected; s2, a pushing sliding system is installed; s3, arch supports and arch feet are mounted; s4, the arch supports and an arch seat are temporarily anchored; s5, the arch feet are pre-tensioned and unloaded; s6, pushing and sliding construction is carried out; s7, an arch foot closure section is constructed; s8, the secondary pouring of the arch feet is conducted; and S9, a sling is mounted and the sling is adjusted. The construction technology has the advantages that the influence of in-situ assembly of the arch ribs and the supports on the existing underpass expressway is solved by adopting the construction method of 'different-position assembly and integral pushing', and the construction time of the overpass expressway can be greatly shortened by adopting different-position assembly and integral pushing sliding construction, so that the influence on passing of expressway traffic is reduced. Meanwhile, after arch rib sections are assembled, prestress is applied to the arch feet, a supporting system is removed after the arch feet are pre-tightened, and the problems that in the sliding process, the stability of the arch ribs on the two sides is poor, and the arch feet are not restrained are solved.
本发明公开了一种拱加劲连续梁钢管拱顶推施工工艺，该施工工艺包括以下步骤：S1、临时支架搭设；S2、顶推滑移系统安装；S3、拱助及拱脚安装；S4、拱助与拱座临时锚固；S5、拱脚预张拉及卸载；S6、顶推滑移施工；S7、拱脚合龙段施工；S8、拱脚二次浇注；S9、安装吊索及调索。有益效果：通过采用“异位拼装、整体顶推”的施工方法，解决拱肋和支架原位拼装对下穿既有高速公路的影响，采用异位拼装，整体顶推滑移施工可以大大减少上跨高速公路的施工时间，从而降低对高速交通的通行影响。同时在拱肋节段拼装完成之后，在拱脚处施加预应力，预紧拱脚后拆除支撑体系，解决在滑移过程中两侧拱肋稳定性差、拱脚无约束的问题。
Arch stiffening continuous beam steel pipe arch crown pushing construction technology
The invention discloses an arch stiffening continuous beam steel pipe arch crown pushing construction technology. The construction technology comprises the following steps that S1, a temporary support is erected; s2, a pushing sliding system is installed; s3, arch supports and arch feet are mounted; s4, the arch supports and an arch seat are temporarily anchored; s5, the arch feet are pre-tensioned and unloaded; s6, pushing and sliding construction is carried out; s7, an arch foot closure section is constructed; s8, the secondary pouring of the arch feet is conducted; and S9, a sling is mounted and the sling is adjusted. The construction technology has the advantages that the influence of in-situ assembly of the arch ribs and the supports on the existing underpass expressway is solved by adopting the construction method of 'different-position assembly and integral pushing', and the construction time of the overpass expressway can be greatly shortened by adopting different-position assembly and integral pushing sliding construction, so that the influence on passing of expressway traffic is reduced. Meanwhile, after arch rib sections are assembled, prestress is applied to the arch feet, a supporting system is removed after the arch feet are pre-tightened, and the problems that in the sliding process, the stability of the arch ribs on the two sides is poor, and the arch feet are not restrained are solved.
本发明公开了一种拱加劲连续梁钢管拱顶推施工工艺，该施工工艺包括以下步骤：S1、临时支架搭设；S2、顶推滑移系统安装；S3、拱助及拱脚安装；S4、拱助与拱座临时锚固；S5、拱脚预张拉及卸载；S6、顶推滑移施工；S7、拱脚合龙段施工；S8、拱脚二次浇注；S9、安装吊索及调索。有益效果：通过采用“异位拼装、整体顶推”的施工方法，解决拱肋和支架原位拼装对下穿既有高速公路的影响，采用异位拼装，整体顶推滑移施工可以大大减少上跨高速公路的施工时间，从而降低对高速交通的通行影响。同时在拱肋节段拼装完成之后，在拱脚处施加预应力，预紧拱脚后拆除支撑体系，解决在滑移过程中两侧拱肋稳定性差、拱脚无约束的问题。
Arch stiffening continuous beam steel pipe arch crown pushing construction technology
一种拱加劲连续梁钢管拱顶推施工工艺
WU SHANGQIAN (author) / WU JIYOU (author) / WU BINBIN (author) / ZHANG SHAOLONG (author) / LIANG PENG (author) / GUO XIANGYANG (author) / CHEN ZHAOBO (author) / SU LI (author) / SHANG YAXIN (author) / MIN KUN (author)
2021-08-13
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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