A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Fatigue crack reinforcing structure and method for arc-shaped notch of diaphragm plate of steel bridge deck
The invention relates to a fatigue crack reinforcing structure and method for an arc-shaped notch of a diaphragm plate of a steel bridge deck, the reinforcing structure comprises a crack arrest hole formed in the diaphragm plate and a shape memory alloy sheet arranged on the side face of the diaphragm plate, the inner end of the fatigue crack is connected with the arc-shaped notch, the outer end of the fatigue crack is connected with the crack arrest hole, and the shape memory alloy sheet covers the fatigue crack and the crack arrest hole at the same time. Compared with the prior art, the reinforcing structure has the advantages that through the cold repair mode of combined action of drilling crack arrest and shape memory alloy sheet pasting, welding residual stress is not introduced, the fatigue life of the arc-shaped notch of the diaphragm plate is remarkably prolonged, and the reinforcing structure has the advantages of being simple in reinforcing mode, relatively low in manufacturing cost, low in construction difficulty, convenient and rapid to install and the like.
本发明涉及一种钢桥面板横隔板弧形切口处疲劳裂纹加固结构及方法，加固结构包括开设在横隔板上的止裂孔以及设置在横隔板侧面的形状记忆合金片，疲劳裂纹的内端与弧形切口相连，外端与止裂孔相连，形状记忆合金片同时覆盖疲劳裂纹及止裂孔。与现有技术相比，本发明通过钻孔止裂与粘贴形状记忆合金片共同作用的冷修复方式，不引入焊接残余应力，显著提升横隔板弧形切口处的疲劳寿命，且具有加固方式简单、相对造价较低、施工难度低、安装方便快捷等优点。
Fatigue crack reinforcing structure and method for arc-shaped notch of diaphragm plate of steel bridge deck
The invention relates to a fatigue crack reinforcing structure and method for an arc-shaped notch of a diaphragm plate of a steel bridge deck, the reinforcing structure comprises a crack arrest hole formed in the diaphragm plate and a shape memory alloy sheet arranged on the side face of the diaphragm plate, the inner end of the fatigue crack is connected with the arc-shaped notch, the outer end of the fatigue crack is connected with the crack arrest hole, and the shape memory alloy sheet covers the fatigue crack and the crack arrest hole at the same time. Compared with the prior art, the reinforcing structure has the advantages that through the cold repair mode of combined action of drilling crack arrest and shape memory alloy sheet pasting, welding residual stress is not introduced, the fatigue life of the arc-shaped notch of the diaphragm plate is remarkably prolonged, and the reinforcing structure has the advantages of being simple in reinforcing mode, relatively low in manufacturing cost, low in construction difficulty, convenient and rapid to install and the like.
本发明涉及一种钢桥面板横隔板弧形切口处疲劳裂纹加固结构及方法，加固结构包括开设在横隔板上的止裂孔以及设置在横隔板侧面的形状记忆合金片，疲劳裂纹的内端与弧形切口相连，外端与止裂孔相连，形状记忆合金片同时覆盖疲劳裂纹及止裂孔。与现有技术相比，本发明通过钻孔止裂与粘贴形状记忆合金片共同作用的冷修复方式，不引入焊接残余应力，显著提升横隔板弧形切口处的疲劳寿命，且具有加固方式简单、相对造价较低、施工难度低、安装方便快捷等优点。
Fatigue crack reinforcing structure and method for arc-shaped notch of diaphragm plate of steel bridge deck
一种钢桥面板横隔板弧形切口处疲劳裂纹加固结构及方法
JIANG XU (author) / DENG QING'ER (author) / QIANG XUHONG (author) / WU WEI (author) / LYU ZHILIN (author) / SUN XIUQI (author) / LI XINRAN (author)
2021-08-20
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
Orthotropic steel bridge deck weld fatigue reinforcing structure and reinforcing method thereof
| European Patent Office | 2021
| European Patent Office | 2021
Orthotropic bridge deck top plate-U rib crack reinforcing component and reinforcing method thereof
| European Patent Office | 2024