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Construction method of segmental assembly corrugated steel web box girder extradosed cable-stayed bridge
The invention relates to the technical field of cable-stayed bridges, and discloses a construction method of a segment-assembled corrugated steel web box girder extradosed cable-stayed bridge, which comprises the following steps of: prefabricating a structure required by a corrugated steel web box girder, and assembling to form a 2 # segment and a subsequent whole segment of corrugated steel web box girder; construction of a foundation, a pier and a bridge tower is completed, construction of a 0 # section box girder and a 1 # section box girder is completed on site on the basis of the pier, and a corrugated steel web is pre-buried in a web of the 1 # section box girder; hoisting the corrugated steel web box girder of the 2 # section to the position of the girder of the 1 # section, welding the corrugated steel web of the 2 # section with the corrugated steel web of the 1 # section, and continuing to install the whole corrugated steel web box girder of all subsequent cable-free areas; construction of an inhaul cable area is conducted, specifically, the whole section of corrugated steel web box girder is hoisted to the maximum cantilever position of a cable tower cable-free area, and a stay cable is installed till construction of the corrugated steel web box girder section in the cable area and tensioning of the stay cable are completed; according to the splicing construction of the segmental prefabricated corrugated steel web box girder, the concrete quality of the girder body is improved, the construction period is short, and obvious economical efficiency is achieved.
本发明涉及斜拉桥技术领域，公开了一种节段拼装波形钢腹板箱梁矮塔斜拉桥施工方法，预制波形钢腹板箱梁所需结构，拼装形成2#节段及后续整节段波形钢腹板箱梁；完成基础、桥墩和桥塔施工，在桥墩基础上，现场完成0#节段及1#节段箱梁施工，并且1#节段箱梁腹板内预埋有波形钢腹板；吊装2#节段波形钢腹板箱梁至1#节段梁位置，将2#节段的波形钢腹板与1#节段波形钢腹板焊接，继续安装后续所有无索区整节段波形钢腹板箱梁；拉索区施工，将整节段波形钢腹板箱梁吊装至索塔无索区最大悬臂处，并安装斜拉索，直至完成有索区波形钢腹板箱梁节段施工及斜拉索张拉；节段预制波形钢腹板箱梁拼装施工，提高了梁体混凝土质量，施工周期短，有明显的经济性。
Construction method of segmental assembly corrugated steel web box girder extradosed cable-stayed bridge
The invention relates to the technical field of cable-stayed bridges, and discloses a construction method of a segment-assembled corrugated steel web box girder extradosed cable-stayed bridge, which comprises the following steps of: prefabricating a structure required by a corrugated steel web box girder, and assembling to form a 2 # segment and a subsequent whole segment of corrugated steel web box girder; construction of a foundation, a pier and a bridge tower is completed, construction of a 0 # section box girder and a 1 # section box girder is completed on site on the basis of the pier, and a corrugated steel web is pre-buried in a web of the 1 # section box girder; hoisting the corrugated steel web box girder of the 2 # section to the position of the girder of the 1 # section, welding the corrugated steel web of the 2 # section with the corrugated steel web of the 1 # section, and continuing to install the whole corrugated steel web box girder of all subsequent cable-free areas; construction of an inhaul cable area is conducted, specifically, the whole section of corrugated steel web box girder is hoisted to the maximum cantilever position of a cable tower cable-free area, and a stay cable is installed till construction of the corrugated steel web box girder section in the cable area and tensioning of the stay cable are completed; according to the splicing construction of the segmental prefabricated corrugated steel web box girder, the concrete quality of the girder body is improved, the construction period is short, and obvious economical efficiency is achieved.
本发明涉及斜拉桥技术领域，公开了一种节段拼装波形钢腹板箱梁矮塔斜拉桥施工方法，预制波形钢腹板箱梁所需结构，拼装形成2#节段及后续整节段波形钢腹板箱梁；完成基础、桥墩和桥塔施工，在桥墩基础上，现场完成0#节段及1#节段箱梁施工，并且1#节段箱梁腹板内预埋有波形钢腹板；吊装2#节段波形钢腹板箱梁至1#节段梁位置，将2#节段的波形钢腹板与1#节段波形钢腹板焊接，继续安装后续所有无索区整节段波形钢腹板箱梁；拉索区施工，将整节段波形钢腹板箱梁吊装至索塔无索区最大悬臂处，并安装斜拉索，直至完成有索区波形钢腹板箱梁节段施工及斜拉索张拉；节段预制波形钢腹板箱梁拼装施工，提高了梁体混凝土质量，施工周期短，有明显的经济性。
Construction method of segmental assembly corrugated steel web box girder extradosed cable-stayed bridge
一种节段拼装波形钢腹板箱梁矮塔斜拉桥施工方法
SONG TAO (author) / PENG YI (author) / WANG BAOQUN (author)
2023-07-28
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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