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Steel-UHPC combined formwork core-filled concrete pier column and construction method thereof
According to the steel-UHPC combined formwork core-filled concrete pier column and the construction method thereof, a corrugated steel plate inner shell is of a corrugated structure and serves as a disassembly-free inner formwork to be prefabricated together with a UHPC outer shell, and a column-shell combined structure is formed; shear nails are uniformly distributed on the inner wall and the outer wall of the corrugated steel plate inner shell and are used for connecting the UHPC outer shell and the cast-in-place concrete column in the UHPC outer shell; the column shell is embedded and fixed to the top of a bearing platform or the ground through an embedding and fixing section at the bottom of the column shell, a reinforcement cage is hoisted on site, and concrete is cast in place in an inner cavity formed by the column shell and the reinforcement cage. According to the structure and the method, the corrugated steel plate inner shell serves as an inner mold for prefabricating the UHPC outer shell, and the construction procedure is simplified; the framework effect of the corrugated steel plate inner shell and the creasing effect generated by the corrugated structure of the corrugated steel plate inner shell improve the rigidity and the bearing capacity of the mold shell, and the problem that a thin-wall UHPC column shell is prone to warping and damage in the transportation and use process is solved. The shear nails arranged on the column shell structure improve the connection strength between interfaces, so that the column shell structure has higher integrity compared with a traditional column shell structure.
本申请提供一种钢‑UHPC组合模壳填芯混凝土墩柱及其施工方法，其波形钢板内壳采用波折构造，其作为免拆内模与UHPC外壳共同预制，形成柱壳组合结构；波形钢板内壳的内外壁上均布设有剪力钉，用以连接UHPC外壳和其内部的现浇混凝土柱；通过柱壳底部的嵌固段而嵌固于承台顶部或地面上，并现场吊装钢筋笼，在由柱壳和钢筋笼构成的内腔中现浇混凝土。本结构及方法将波形钢板内壳作为预制UHPC外壳的内模，简化了施工工序；波形钢板内壳的骨架作用及其波折构造产生的折皱效应提高了模壳刚度与承载能力，避免了薄壁UHPC柱壳易在运输与使用过程发生翘曲与破损的问题；其上布设的剪力钉提升了界面间的连接强度，使其相较于传统柱壳结构具有更强的整体性。
Steel-UHPC combined formwork core-filled concrete pier column and construction method thereof
According to the steel-UHPC combined formwork core-filled concrete pier column and the construction method thereof, a corrugated steel plate inner shell is of a corrugated structure and serves as a disassembly-free inner formwork to be prefabricated together with a UHPC outer shell, and a column-shell combined structure is formed; shear nails are uniformly distributed on the inner wall and the outer wall of the corrugated steel plate inner shell and are used for connecting the UHPC outer shell and the cast-in-place concrete column in the UHPC outer shell; the column shell is embedded and fixed to the top of a bearing platform or the ground through an embedding and fixing section at the bottom of the column shell, a reinforcement cage is hoisted on site, and concrete is cast in place in an inner cavity formed by the column shell and the reinforcement cage. According to the structure and the method, the corrugated steel plate inner shell serves as an inner mold for prefabricating the UHPC outer shell, and the construction procedure is simplified; the framework effect of the corrugated steel plate inner shell and the creasing effect generated by the corrugated structure of the corrugated steel plate inner shell improve the rigidity and the bearing capacity of the mold shell, and the problem that a thin-wall UHPC column shell is prone to warping and damage in the transportation and use process is solved. The shear nails arranged on the column shell structure improve the connection strength between interfaces, so that the column shell structure has higher integrity compared with a traditional column shell structure.
本申请提供一种钢‑UHPC组合模壳填芯混凝土墩柱及其施工方法，其波形钢板内壳采用波折构造，其作为免拆内模与UHPC外壳共同预制，形成柱壳组合结构；波形钢板内壳的内外壁上均布设有剪力钉，用以连接UHPC外壳和其内部的现浇混凝土柱；通过柱壳底部的嵌固段而嵌固于承台顶部或地面上，并现场吊装钢筋笼，在由柱壳和钢筋笼构成的内腔中现浇混凝土。本结构及方法将波形钢板内壳作为预制UHPC外壳的内模，简化了施工工序；波形钢板内壳的骨架作用及其波折构造产生的折皱效应提高了模壳刚度与承载能力，避免了薄壁UHPC柱壳易在运输与使用过程发生翘曲与破损的问题；其上布设的剪力钉提升了界面间的连接强度，使其相较于传统柱壳结构具有更强的整体性。
Steel-UHPC combined formwork core-filled concrete pier column and construction method thereof
一种钢-UHPC组合模壳填芯混凝土墩柱及其施工方法
HU ZHIJIAN (author) / YOU XIAOJIE (author)
2024-10-18
Patent
Electronic Resource
Chinese
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