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A platform for research: civil engineering, architecture and urbanism
Construction method of large-diameter retard-bonded prestressed beam
The invention discloses a construction method of a large-diameter retard-bonded prestressed beam, which belongs to the technical field of building construction and comprises the following steps: presetting corresponding data and preparing required materials; supporting steel bars are arranged according to the construction drawing, and it is ensured that the deviation value between a beam shape control point and the designed position is within the specified range; a template at the end part of the tensioning end is subjected to drilling treatment according to the position of a preformed hole, a cavity mold of the tensioning end is placed, steel strands are bundled, and bundling of the steel strands is arranged in a strip shape; a PE sheath is arranged on the outer side of a cluster of the retard-bonded steel strands in a sleeving mode to prepare retard-bonded prestressed tendons, and the retard-bonded prestressed tendons are laid in a straight mode; cleaning the surface layer part of the retard-bonded prestressed tendon at the tensioning end, brushing a retarder after cleaning is completed, then installing an anchor ring and a clamping piece, and finally tensioning the prestressed tendon through a jack until the design requirement is met; and cutting redundant steel strands, and finally sealing with fine aggregate concrete. The construction efficiency is improved, and the construction quality is ensured.
本发明公开了一种大直径缓粘结预应力梁的施工方法，属于建筑施工技术领域，包括：预设相应数据，准备所需材料；根据施工图布置支撑钢筋，并确保束形控制点与设计的位置的偏差值处于规定范围；张拉端的端部的模板根据预留孔位置进行钻孔处理，放置张拉端的穴模并穿束钢绞线，钢绞线的集束采用带状布置；缓粘结钢绞线的集束外侧套设PE护套制备缓粘结预应力筋，保持顺直铺放缓粘结预应力筋；清理张拉端的缓粘结预应力筋的表层部位，清理完成后涂刷缓凝剂，之后进行锚环和夹片的安装，最后通过千斤顶进行预应力筋张拉直至符合设计要求；切割多余钢铰线，最后用细石混凝土封闭。本发明加快了施工效率，确保了施工质量。
Construction method of large-diameter retard-bonded prestressed beam
The invention discloses a construction method of a large-diameter retard-bonded prestressed beam, which belongs to the technical field of building construction and comprises the following steps: presetting corresponding data and preparing required materials; supporting steel bars are arranged according to the construction drawing, and it is ensured that the deviation value between a beam shape control point and the designed position is within the specified range; a template at the end part of the tensioning end is subjected to drilling treatment according to the position of a preformed hole, a cavity mold of the tensioning end is placed, steel strands are bundled, and bundling of the steel strands is arranged in a strip shape; a PE sheath is arranged on the outer side of a cluster of the retard-bonded steel strands in a sleeving mode to prepare retard-bonded prestressed tendons, and the retard-bonded prestressed tendons are laid in a straight mode; cleaning the surface layer part of the retard-bonded prestressed tendon at the tensioning end, brushing a retarder after cleaning is completed, then installing an anchor ring and a clamping piece, and finally tensioning the prestressed tendon through a jack until the design requirement is met; and cutting redundant steel strands, and finally sealing with fine aggregate concrete. The construction efficiency is improved, and the construction quality is ensured.
本发明公开了一种大直径缓粘结预应力梁的施工方法，属于建筑施工技术领域，包括：预设相应数据，准备所需材料；根据施工图布置支撑钢筋，并确保束形控制点与设计的位置的偏差值处于规定范围；张拉端的端部的模板根据预留孔位置进行钻孔处理，放置张拉端的穴模并穿束钢绞线，钢绞线的集束采用带状布置；缓粘结钢绞线的集束外侧套设PE护套制备缓粘结预应力筋，保持顺直铺放缓粘结预应力筋；清理张拉端的缓粘结预应力筋的表层部位，清理完成后涂刷缓凝剂，之后进行锚环和夹片的安装，最后通过千斤顶进行预应力筋张拉直至符合设计要求；切割多余钢铰线，最后用细石混凝土封闭。本发明加快了施工效率，确保了施工质量。
Construction method of large-diameter retard-bonded prestressed beam
一种大直径缓粘结预应力梁的施工方法
LI LIN (author) / YANG LULU (author) / HAN GUANGMING (author) / DU YOUXIU (author) / NIU CHAO (author) / ZHANG JIANFEI (author) / WANG LIN (author) / XIE PENGJU (author)
2023-07-14
Patent
Electronic Resource
Chinese
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