Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Pouring method for support cast-in-place ultra-wide multi-box-chamber prestress continuous steel structure box girder
The invention provides a pouring method for a support cast-in-place ultra-wide multi-box-chamber prestress continuous steel structure box girder, and relates to the technical field of bridge construction. The method comprises the steps that according to the number of pier columns spanned by the steel box girder sections, the steel box girder sections are segmented in the bridge direction, the pier top parts are divided into second sub-sections, and the rest parts are divided into first sub-sections; the first sub-sections are firstly poured, then the second sub-sections are poured, and every two adjacent first sub-sections are connected through the corresponding second sub-section; and the poured steel box girder sections are subjected to prestress tensioning. According to the embodiment of the invention, the pouring interval time and the number of pouring personnel can be reduced through a manner of pouring the steel box girder segments in a segmented manner, the problem of shrinkage cracking is effectively avoided, the construction organization difficulty and the pouring cost are reduced, additional stress generated by a concrete structure can be reduced through a manner of pouring the first sub-segment firstly, and the construction efficiency is improved. And smooth completion of pouring of the steel box girder is guaranteed, and application and development of the ultra-wide multi-box-chamber prestressed continuous rigid frame box girder are promoted.
本申请提供了一种支架现浇超宽多箱室预应力连续钢构箱梁浇筑方法，涉及桥梁施工技术领域。该方法包括：根据钢箱梁节段跨墩柱的数量，对钢箱梁节段在顺桥向方向进行分段，墩顶部分划分为第二子节段，其余划分为第一子节段；先浇筑第一子节段，后浇筑第二子节段，利用第二子节段连接相邻的两个第一子节段；对浇筑完成的钢箱梁节段进行预应力张拉。本申请实施例能够通过钢箱梁节段分段浇筑的方式减少浇筑间隔时间和浇筑人员数量，有效避免收缩开裂问题，且降低施工组织难度和浇筑成本，并能通过先浇筑第一子节段的方式，减少混凝土结构产生的附加应力，保障钢箱梁浇筑的顺利完成，促进超宽多箱室预应力连续刚构箱梁的应用和发展。
Pouring method for support cast-in-place ultra-wide multi-box-chamber prestress continuous steel structure box girder
The invention provides a pouring method for a support cast-in-place ultra-wide multi-box-chamber prestress continuous steel structure box girder, and relates to the technical field of bridge construction. The method comprises the steps that according to the number of pier columns spanned by the steel box girder sections, the steel box girder sections are segmented in the bridge direction, the pier top parts are divided into second sub-sections, and the rest parts are divided into first sub-sections; the first sub-sections are firstly poured, then the second sub-sections are poured, and every two adjacent first sub-sections are connected through the corresponding second sub-section; and the poured steel box girder sections are subjected to prestress tensioning. According to the embodiment of the invention, the pouring interval time and the number of pouring personnel can be reduced through a manner of pouring the steel box girder segments in a segmented manner, the problem of shrinkage cracking is effectively avoided, the construction organization difficulty and the pouring cost are reduced, additional stress generated by a concrete structure can be reduced through a manner of pouring the first sub-segment firstly, and the construction efficiency is improved. And smooth completion of pouring of the steel box girder is guaranteed, and application and development of the ultra-wide multi-box-chamber prestressed continuous rigid frame box girder are promoted.
本申请提供了一种支架现浇超宽多箱室预应力连续钢构箱梁浇筑方法，涉及桥梁施工技术领域。该方法包括：根据钢箱梁节段跨墩柱的数量，对钢箱梁节段在顺桥向方向进行分段，墩顶部分划分为第二子节段，其余划分为第一子节段；先浇筑第一子节段，后浇筑第二子节段，利用第二子节段连接相邻的两个第一子节段；对浇筑完成的钢箱梁节段进行预应力张拉。本申请实施例能够通过钢箱梁节段分段浇筑的方式减少浇筑间隔时间和浇筑人员数量，有效避免收缩开裂问题，且降低施工组织难度和浇筑成本，并能通过先浇筑第一子节段的方式，减少混凝土结构产生的附加应力，保障钢箱梁浇筑的顺利完成，促进超宽多箱室预应力连续刚构箱梁的应用和发展。
Pouring method for support cast-in-place ultra-wide multi-box-chamber prestress continuous steel structure box girder
支架现浇超宽多箱室预应力连续钢构箱梁浇筑方法
LU GUANNAN (Autor:in) / YU LI (Autor:in) / LAI YINMING (Autor:in) / LUO SEN (Autor:in) / LEE YOUNG-JOONG (Autor:in) / LI BAOZHUAN (Autor:in) / YU HAIJIAO (Autor:in) / WANG WENGUO (Autor:in) / PENG ZHEN (Autor:in) / LI ZEMIN (Autor:in)
12.07.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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