A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Fatigue cracking prestress reinforcing device for orthotropic steel bridge deck top plate-longitudinal rib welding joint
An orthotropic steel bridge deck slab top plate-longitudinal rib welding joint fatigue cracking prestress reinforcing device comprises a steel bridge deck slab, geometric anchorage devices, trapezoidal plugs and bolt structures, and the geometric anchorage devices are arranged on the two sides of the top of the steel bridge deck slab top plate-longitudinal rib welding joint; a pair of trapezoidal plugs with the sides with the smaller section width are arranged between the geometric anchorage devices, the middles of the sides, adjacent to the trapezoidal plugs, of the geometric anchorage devices protrude, the side faces of the geometric anchorage devices are attached to the side faces of the trapezoidal plugs, and the trapezoidal plugs are provided with through holes in the length direction and connected through bolt structures. The adjacent edges of the two geometric anchorage devices extend outwards to the top of the trapezoidal plug. The device capable of enabling the two sides of the top of the joint to generate the stretching effect is arranged at the top of the welding joint, and the pre-compressive stress is generated at the weld toe and the weld root of the lower part of the top plate by utilizing the reverse bending moment effect, so that the fatigue crack of the welding joint extending in the thickness direction of the top plate is closed and stops extending.
一种正交异性钢桥面板顶板‑纵肋焊接接头疲劳开裂预应力加固装置，包括钢桥面板、几何锚具、梯形插头和螺栓结构，所述钢桥面板顶板‑纵肋焊接接头顶部的两侧设有几何锚具，所述几何锚具之间设有截面宽度较小侧相向的一对梯形插头，所述几何锚具与梯形插头相邻侧的中部隆起且侧面与梯形插头侧面贴合，所述梯形插头沿长度方向设有通孔且通过螺栓结构连接，两几何锚具相邻棱边处外伸至梯形插头顶部。本发明提供通过在焊接接头顶部设置可以使接头顶部两侧产生拉伸作用的装置，利用反向弯矩作用使得顶板下部焊趾及焊根处产生预压应力，由此使得焊接接头沿顶板厚度方向扩展的疲劳裂纹闭合并停止扩展。
Fatigue cracking prestress reinforcing device for orthotropic steel bridge deck top plate-longitudinal rib welding joint
An orthotropic steel bridge deck slab top plate-longitudinal rib welding joint fatigue cracking prestress reinforcing device comprises a steel bridge deck slab, geometric anchorage devices, trapezoidal plugs and bolt structures, and the geometric anchorage devices are arranged on the two sides of the top of the steel bridge deck slab top plate-longitudinal rib welding joint; a pair of trapezoidal plugs with the sides with the smaller section width are arranged between the geometric anchorage devices, the middles of the sides, adjacent to the trapezoidal plugs, of the geometric anchorage devices protrude, the side faces of the geometric anchorage devices are attached to the side faces of the trapezoidal plugs, and the trapezoidal plugs are provided with through holes in the length direction and connected through bolt structures. The adjacent edges of the two geometric anchorage devices extend outwards to the top of the trapezoidal plug. The device capable of enabling the two sides of the top of the joint to generate the stretching effect is arranged at the top of the welding joint, and the pre-compressive stress is generated at the weld toe and the weld root of the lower part of the top plate by utilizing the reverse bending moment effect, so that the fatigue crack of the welding joint extending in the thickness direction of the top plate is closed and stops extending.
一种正交异性钢桥面板顶板‑纵肋焊接接头疲劳开裂预应力加固装置，包括钢桥面板、几何锚具、梯形插头和螺栓结构，所述钢桥面板顶板‑纵肋焊接接头顶部的两侧设有几何锚具，所述几何锚具之间设有截面宽度较小侧相向的一对梯形插头，所述几何锚具与梯形插头相邻侧的中部隆起且侧面与梯形插头侧面贴合，所述梯形插头沿长度方向设有通孔且通过螺栓结构连接，两几何锚具相邻棱边处外伸至梯形插头顶部。本发明提供通过在焊接接头顶部设置可以使接头顶部两侧产生拉伸作用的装置，利用反向弯矩作用使得顶板下部焊趾及焊根处产生预压应力，由此使得焊接接头沿顶板厚度方向扩展的疲劳裂纹闭合并停止扩展。
Fatigue cracking prestress reinforcing device for orthotropic steel bridge deck top plate-longitudinal rib welding joint
一种正交异性钢桥面板顶板-纵肋焊接接头疲劳开裂预应力加固装置
XIN HAOHUI (author) / LIU JIELIN (author)
2023-03-14
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
Intelligent orthotropic steel bridge deck fatigue cracking detection robot
| European Patent Office | 2020
Orthotropic steel bridge deck weld fatigue reinforcing structure and reinforcing method thereof
| European Patent Office | 2021
Orthotropic steel bridge deck fatigue reinforcing body structure and construction method thereof
| European Patent Office | 2021
Effect of reinforcing method against fatigue cracking of orthotropic steel deck with bulb ribs
| British Library Conference Proceedings | 2010