Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
UHPC pipe constraint recycled concrete column externally pasted with FRP cloth
The invention discloses a UHPC pipe constraint recycled concrete column externally pasted with FRP cloth. The UHPC pipe constraint recycled concrete column comprises an FRP layer, a UHPRC pipe and recycled concrete; the FRP layer is externally pasted to the UHPRC pipe to serve as external circumferential constraint of the composite column; the UHPRC pipe is filled with the recycled concrete in a pouring manner; the UHPRC pipe serves as a permanent formwork to be connected with the internal concrete into a whole; the recycled concrete is concrete containing recycled concrete blocks or recycled concrete aggregate; and the FRP cloth achieves the circumferential constraint effect on the ultra-high-performance steel fiber concrete-recycled concrete composite column, and the UHPRC pipe achieves the partial circumferential constraint effect on the recycled concrete and meanwhile bears partial vertical loads. Compared with traditional steel pipe concrete, the interface mechanical performance of the UHPRC and newly-mixed concrete is better, the structural integrity is good, the bearing capacity of the composite column can be further improved through constraint of the externally-pasted FRP cloth, better durability and fire resistance are achieved, and disasters such as earthquakes, impacts and explosions can be well resisted. In addition, the recycled concrete is adopted for partially replacing conventional concrete, economic benefits are high, environment friendliness is good, and sustainable development value is achieved.
本发明公开了一种外贴FRP布的UHPC管约束再生混凝土柱，包括FRP层、UHPFRC管、再生混凝土；所述FRP层外贴于UHPFRC管作为复合柱的外部环向约束；所述再生混凝土浇筑填充于UHPFRC管内，UHPFRC管作为永久模板与内部的混凝土连接成一体。所述再生混凝土为含有再生混凝土块体或再生混凝土骨料的混凝土。FRP布对超高性能钢纤维混凝土‑再生混凝土复合柱起环向约束作用，UHPFRC管不仅对再生混凝土的起部分环向约束的作用，同时承受部分竖向荷载。与传统钢管混凝土相比，UHPFRC与新拌混凝土的界面力学性能更好，结构整体性佳，外贴FRP布约束能进一步提升复合柱的承载力，且具有更好的耐久性和耐火性，能很好的抵御地震、冲击、爆炸等灾害。此外，采用再生混凝土部分替代常规混凝土，经济效益高，环保性好，具有可持续发展价值。
UHPC pipe constraint recycled concrete column externally pasted with FRP cloth
The invention discloses a UHPC pipe constraint recycled concrete column externally pasted with FRP cloth. The UHPC pipe constraint recycled concrete column comprises an FRP layer, a UHPRC pipe and recycled concrete; the FRP layer is externally pasted to the UHPRC pipe to serve as external circumferential constraint of the composite column; the UHPRC pipe is filled with the recycled concrete in a pouring manner; the UHPRC pipe serves as a permanent formwork to be connected with the internal concrete into a whole; the recycled concrete is concrete containing recycled concrete blocks or recycled concrete aggregate; and the FRP cloth achieves the circumferential constraint effect on the ultra-high-performance steel fiber concrete-recycled concrete composite column, and the UHPRC pipe achieves the partial circumferential constraint effect on the recycled concrete and meanwhile bears partial vertical loads. Compared with traditional steel pipe concrete, the interface mechanical performance of the UHPRC and newly-mixed concrete is better, the structural integrity is good, the bearing capacity of the composite column can be further improved through constraint of the externally-pasted FRP cloth, better durability and fire resistance are achieved, and disasters such as earthquakes, impacts and explosions can be well resisted. In addition, the recycled concrete is adopted for partially replacing conventional concrete, economic benefits are high, environment friendliness is good, and sustainable development value is achieved.
本发明公开了一种外贴FRP布的UHPC管约束再生混凝土柱，包括FRP层、UHPFRC管、再生混凝土；所述FRP层外贴于UHPFRC管作为复合柱的外部环向约束；所述再生混凝土浇筑填充于UHPFRC管内，UHPFRC管作为永久模板与内部的混凝土连接成一体。所述再生混凝土为含有再生混凝土块体或再生混凝土骨料的混凝土。FRP布对超高性能钢纤维混凝土‑再生混凝土复合柱起环向约束作用，UHPFRC管不仅对再生混凝土的起部分环向约束的作用，同时承受部分竖向荷载。与传统钢管混凝土相比，UHPFRC与新拌混凝土的界面力学性能更好，结构整体性佳，外贴FRP布约束能进一步提升复合柱的承载力，且具有更好的耐久性和耐火性，能很好的抵御地震、冲击、爆炸等灾害。此外，采用再生混凝土部分替代常规混凝土，经济效益高，环保性好，具有可持续发展价值。
UHPC pipe constraint recycled concrete column externally pasted with FRP cloth
一种外贴FRP布的UHPC管约束再生混凝土柱
YANG ZHENJUN (Autor:in) / LI YAQI (Autor:in) / PENG CHENGMING (Autor:in)
24.08.2021
Patent
Elektronische Ressource
Chinesisch
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