Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for steel-concrete combined section of deck type steel box continuous arch bridge
The invention discloses a construction method for a steel-concrete combined section of a deck type steel box continuous arch bridge. The steel-concrete combined section of the deck type steel box continuous arch bridge is characterized by comprising a cylindrical pier column, a variable cross-section steel-concrete combined section and steel box arch feet. The steel-concrete combined section is vertically mounted on the cylindrical pier column; and the steel box arch feet are embedded into the steel-concrete combined section. The construction process comprises the following steps of mounting pier column erecting steel bars and stirrups, pre-burying steel strands and mounting a pier column template, mounting four arch foot positioning steel plates, pouring concrete at the lower part of the pier column in a layered manner, erecting a pier column outer side bracket, hoisting the arch feet and positioning, mounting shear reinforcements, mountingstress and strain sensors and a temperature sensor, mounting a steel-concrete combined section stirrup, embedding a cooling pipe, mounting a steel-concrete combined section template, positioning a tensioning end of a steel strand, pouring steel-concrete combined section concrete, performing prestress tensioning and grouting on an arch foot, and pouring concrete at the upper part of the arch foot after an arch rib is mounted. The self-weight of the upper structure and the use amount of concrete of the pier column are reduced, but a large stress concentration phenomenon can be generated; and displacement of the arch feet caused by uneven external force is prevented, and construction is convenient.
本发明公开了一种上承式钢箱连续拱桥钢混结合段施工方法；其特征在于：上承式钢箱连拱桥钢混结合段包括:包括圆柱形墩柱、变截面钢混结合段和钢箱拱脚三部分；其中，钢混结合段垂直安装在圆柱形墩柱上；所述钢箱拱脚嵌入钢混结合段内；其施工工艺流程：安装墩柱架立钢筋和箍筋、预埋钢绞线、安装墩柱模板→安装4个拱脚定位钢板→分层浇筑墩柱下部混凝土→搭设墩柱外侧支架→吊装拱脚并定位→安装抗剪钢筋→安装应力应变传感器、温度传感器→安装钢混结合段箍筋→埋置冷却管→安装钢混结合段模板→钢绞线张拉端定位→浇筑钢混结合段混凝土→拱脚预应力张拉、压浆→在安装好拱肋之后浇筑拱脚上部混凝土。本发明减少了上部结构的自重以及墩柱的混凝土用量，但是会产生较大的应力集中现象；防止产生不均匀外力使得拱脚移位，施工方便等优点。
Construction method for steel-concrete combined section of deck type steel box continuous arch bridge
The invention discloses a construction method for a steel-concrete combined section of a deck type steel box continuous arch bridge. The steel-concrete combined section of the deck type steel box continuous arch bridge is characterized by comprising a cylindrical pier column, a variable cross-section steel-concrete combined section and steel box arch feet. The steel-concrete combined section is vertically mounted on the cylindrical pier column; and the steel box arch feet are embedded into the steel-concrete combined section. The construction process comprises the following steps of mounting pier column erecting steel bars and stirrups, pre-burying steel strands and mounting a pier column template, mounting four arch foot positioning steel plates, pouring concrete at the lower part of the pier column in a layered manner, erecting a pier column outer side bracket, hoisting the arch feet and positioning, mounting shear reinforcements, mountingstress and strain sensors and a temperature sensor, mounting a steel-concrete combined section stirrup, embedding a cooling pipe, mounting a steel-concrete combined section template, positioning a tensioning end of a steel strand, pouring steel-concrete combined section concrete, performing prestress tensioning and grouting on an arch foot, and pouring concrete at the upper part of the arch foot after an arch rib is mounted. The self-weight of the upper structure and the use amount of concrete of the pier column are reduced, but a large stress concentration phenomenon can be generated; and displacement of the arch feet caused by uneven external force is prevented, and construction is convenient.
本发明公开了一种上承式钢箱连续拱桥钢混结合段施工方法；其特征在于：上承式钢箱连拱桥钢混结合段包括:包括圆柱形墩柱、变截面钢混结合段和钢箱拱脚三部分；其中，钢混结合段垂直安装在圆柱形墩柱上；所述钢箱拱脚嵌入钢混结合段内；其施工工艺流程：安装墩柱架立钢筋和箍筋、预埋钢绞线、安装墩柱模板→安装4个拱脚定位钢板→分层浇筑墩柱下部混凝土→搭设墩柱外侧支架→吊装拱脚并定位→安装抗剪钢筋→安装应力应变传感器、温度传感器→安装钢混结合段箍筋→埋置冷却管→安装钢混结合段模板→钢绞线张拉端定位→浇筑钢混结合段混凝土→拱脚预应力张拉、压浆→在安装好拱肋之后浇筑拱脚上部混凝土。本发明减少了上部结构的自重以及墩柱的混凝土用量，但是会产生较大的应力集中现象；防止产生不均匀外力使得拱脚移位，施工方便等优点。
Construction method for steel-concrete combined section of deck type steel box continuous arch bridge
一种上承式钢箱连续拱桥钢混结合段施工方法
WANG ZENGQUAN (Autor:in) / QIN LIPENG (Autor:in) / ZHANG LUTAO (Autor:in) / SUN YONGFANG (Autor:in) / LI PENGLONG (Autor:in) / WANG LINGYI (Autor:in) / WU ZHEN (Autor:in) / LIU YUZHI (Autor:in)
18.06.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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