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A platform for research: civil engineering, architecture and urbanism
Bridge combined reinforcing method based on ECC-distributed prestress
The invention discloses a bridge combined reinforcing method based on ECC-distributed prestress. The method comprises a plurality of prestressed steel strands arranged along one side or two sides of a web of a bridge, a plurality of shear pins, a reinforcing mesh fixedly connected to the shear pins, and an ECC thickening layer covering the prestressed steel strands, the reinforcing mesh and the shear pins in a spraying mode. The reinforcing method specifically comprises the steps of reinforcing site design, drilling, chiseling treatment, hole cleaning, shear pin implanting, prestressed steel strand laying, tensioning and anchoring, reinforcing mesh fixing, watering and wetting, ECC material preparing and jetting and the like. The bridge web is reinforced based on the distributed prestressed steel strands and the sprayed ECC concrete, the bending resistance bearing capacity and the shearing resistance bearing capacity of the bridge structure are improved, the problem that local stress concentration is prone to being generated in a concrete structure in traditional prestressed reinforcement is solved, the service performance is improved, the service life is prolonged, and the operation and maintenance cost is reduced.
本发明公开了一种基于ECC‑分散式预应力的桥梁组合加固方法，包括沿着桥梁的腹板单侧或两侧设置的多根预应力钢绞线、多根剪切销钉以及与剪切销钉上固定连接的钢筋网，通过喷射方式覆盖预应力钢绞线、钢筋网及剪切销钉的ECC增厚层；所述加固方法具体包括设计加固位点、钻孔、凿毛处理、清孔、植入剪切销钉、布设预应力钢绞线及张拉锚固、固定钢筋网、浇水润湿以及制备ECC材料并喷射等步骤。本发明基于分散式预应力钢绞线和喷射ECC混凝土加固桥梁腹板，提高桥梁结构的抗弯承载能力和抗剪承载能力，解决传统预应力加固中混凝土结构易产生局部应力集中的问题，提高服役性能和使用寿命，降低运营和维护成本。
Bridge combined reinforcing method based on ECC-distributed prestress
The invention discloses a bridge combined reinforcing method based on ECC-distributed prestress. The method comprises a plurality of prestressed steel strands arranged along one side or two sides of a web of a bridge, a plurality of shear pins, a reinforcing mesh fixedly connected to the shear pins, and an ECC thickening layer covering the prestressed steel strands, the reinforcing mesh and the shear pins in a spraying mode. The reinforcing method specifically comprises the steps of reinforcing site design, drilling, chiseling treatment, hole cleaning, shear pin implanting, prestressed steel strand laying, tensioning and anchoring, reinforcing mesh fixing, watering and wetting, ECC material preparing and jetting and the like. The bridge web is reinforced based on the distributed prestressed steel strands and the sprayed ECC concrete, the bending resistance bearing capacity and the shearing resistance bearing capacity of the bridge structure are improved, the problem that local stress concentration is prone to being generated in a concrete structure in traditional prestressed reinforcement is solved, the service performance is improved, the service life is prolonged, and the operation and maintenance cost is reduced.
本发明公开了一种基于ECC‑分散式预应力的桥梁组合加固方法，包括沿着桥梁的腹板单侧或两侧设置的多根预应力钢绞线、多根剪切销钉以及与剪切销钉上固定连接的钢筋网，通过喷射方式覆盖预应力钢绞线、钢筋网及剪切销钉的ECC增厚层；所述加固方法具体包括设计加固位点、钻孔、凿毛处理、清孔、植入剪切销钉、布设预应力钢绞线及张拉锚固、固定钢筋网、浇水润湿以及制备ECC材料并喷射等步骤。本发明基于分散式预应力钢绞线和喷射ECC混凝土加固桥梁腹板，提高桥梁结构的抗弯承载能力和抗剪承载能力，解决传统预应力加固中混凝土结构易产生局部应力集中的问题，提高服役性能和使用寿命，降低运营和维护成本。
Bridge combined reinforcing method based on ECC-distributed prestress
一种基于ECC-分散式预应力的桥梁组合加固方法
YANG JING (author) / YANG CAIQIAN (author) / PAN YONG (author) / CHEN SHANSHAN (author) / TAN XINYANG (author)
2024-01-12
Patent
Electronic Resource
Chinese
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