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Construction method of prefabricated UHPC (Ultra High Performance Concrete) formwork core-filled concrete pier
A prefabricated UHPC formwork core-filled concrete pier is built on a bearing platform, a concrete pouring cavity is formed in a formwork, and a steel reinforcement framework is arranged in the pouring cavity. The UHPC formwork is formed by connecting a plurality of prefabricated UHPC formwork sections, fibers extend out of the upper end face of the formwork section below the joint and the lower end face of the formwork section above the joint, and the upper end face and the lower end face of the formwork section are connected into a whole through ultra-high performance concrete grout. During construction, firstly, a UHPC formwork section with fibers extending out from the end face is prefabricated, reinforcing steel bars pre-embedded in a bearing platform are lengthened to form a first-section reinforcing steel bar framework of the bridge pier, the reinforcing steel bar framework is sleeved with one formwork section, core filling concrete is poured, then the reinforcing steel bars are lengthened to form a new reinforcing steel bar framework, and the new formwork section is installed. And joints of the two formwork sections are connected through ultra-high-performance concrete grout, and core filling concrete is poured. And repeating the operation to form the bridge pier. The formwork sections are convenient to transport, formworks do not need to be disassembled and erected on site, production efficiency is high, formwork cost is saved, and construction safety is improved.
一种预制UHPC模壳填芯混凝土桥墩，建造在承台上，模壳内为混凝土的浇筑腔，浇筑腔内有钢筋骨架。UHPC模壳是由多个预制UHPC模壳段连接而成，接缝处下方的模壳段的上端面和上方的模壳段的下端面均有纤维伸出，通过超高性能混凝土浆液将它们连接为整体。施工时首先预制端面有纤维伸出的UHPC模壳段，接长预埋在承台中的钢筋形成桥墩的首段钢筋骨架，将一个模壳段套在钢筋骨架上，浇筑填芯混凝土，随后接长钢筋形成一段新的钢筋骨架，安装新的模壳段，将两个模壳段的接缝用超高性能混凝土浆液连接，浇筑填芯混凝土。如此循环作业，形成桥墩。模壳段便于运输，现场无需拆立模板，生产效率高，节约了模板成本，提高了施工安全性。
Construction method of prefabricated UHPC (Ultra High Performance Concrete) formwork core-filled concrete pier
A prefabricated UHPC formwork core-filled concrete pier is built on a bearing platform, a concrete pouring cavity is formed in a formwork, and a steel reinforcement framework is arranged in the pouring cavity. The UHPC formwork is formed by connecting a plurality of prefabricated UHPC formwork sections, fibers extend out of the upper end face of the formwork section below the joint and the lower end face of the formwork section above the joint, and the upper end face and the lower end face of the formwork section are connected into a whole through ultra-high performance concrete grout. During construction, firstly, a UHPC formwork section with fibers extending out from the end face is prefabricated, reinforcing steel bars pre-embedded in a bearing platform are lengthened to form a first-section reinforcing steel bar framework of the bridge pier, the reinforcing steel bar framework is sleeved with one formwork section, core filling concrete is poured, then the reinforcing steel bars are lengthened to form a new reinforcing steel bar framework, and the new formwork section is installed. And joints of the two formwork sections are connected through ultra-high-performance concrete grout, and core filling concrete is poured. And repeating the operation to form the bridge pier. The formwork sections are convenient to transport, formworks do not need to be disassembled and erected on site, production efficiency is high, formwork cost is saved, and construction safety is improved.
一种预制UHPC模壳填芯混凝土桥墩，建造在承台上，模壳内为混凝土的浇筑腔，浇筑腔内有钢筋骨架。UHPC模壳是由多个预制UHPC模壳段连接而成，接缝处下方的模壳段的上端面和上方的模壳段的下端面均有纤维伸出，通过超高性能混凝土浆液将它们连接为整体。施工时首先预制端面有纤维伸出的UHPC模壳段，接长预埋在承台中的钢筋形成桥墩的首段钢筋骨架，将一个模壳段套在钢筋骨架上，浇筑填芯混凝土，随后接长钢筋形成一段新的钢筋骨架，安装新的模壳段，将两个模壳段的接缝用超高性能混凝土浆液连接，浇筑填芯混凝土。如此循环作业，形成桥墩。模壳段便于运输，现场无需拆立模板，生产效率高，节约了模板成本，提高了施工安全性。
Construction method of prefabricated UHPC (Ultra High Performance Concrete) formwork core-filled concrete pier
一种预制UHPC模壳填芯混凝土桥墩的施工方法
WEI JIANDONG (author) / WU QINGBO (author) / HUANG YI (author) / CHEN YUFEI (author) / SONG FENLI (author) / GUAN MANYU (author) / ZHANG TIANHANG (author)
2023-03-14
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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