Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
External prestressing reinforcing method for existing grid structure
The invention discloses an external prestressing reinforcing system of an existing net rack structure. Bolt-sphere connection nodes are adopted between adjacent steel pipes in an existing net rack; the lower ends of the partial bolt-sphere joints are connected with vertical supporting rods; the bolt-sphere joint is connected with the vertical supporting rod by forming a through hole in the bottom of the side wall. The lower ends of part of the vertical supporting rods are connected with endless cables, and the distribution positions of the endless cables are determined according to the span of the grid structure. In the connection mode of the ring cable and the vertical supporting rod lower chord, the supporting rod lower chord is connected with the ball cable clamp in a welded mode, and the ring cable body penetrates through a middle hole of the ball cable clamp to be fixedly connected. Displacement of the grid structure is controlled through the endless cable, the overall stability of the grid structure is improved, and local stress concentration is reduced; the existing grid structure is reinforced through the inhaul cables by utilizing the vertical supporting rods, the prestressed steel inhaul cables and the ring cables, tension stress formed by tensioning the prestressed steel cables can be converted into prestress, upward bearing force is generated on the vertical supporting rods, deformation of the grid structure is reduced, and the structural strength and stability are improved.
本发明公开了一种既有网架结构的体外预应力加固系统，既有网架中相邻钢管之间采用螺栓球连接节点；部分螺栓球节点下端连接竖向撑杆；螺栓球节点通过在侧壁底部开设通孔与竖向撑杆相连接。部分竖向撑杆的下端连接有环索，环索根据网架结构跨度确定分布位置。环索与竖向撑杆下弦的连接方式中，撑杆下弦与球索夹通过焊接连接，环索索体穿过球索夹中间孔固定连接；利用环索控制网架结构位移，提升网架结构整体稳定性，减少局部应力集中；通过拉索利用竖向撑杆、预应力钢拉索和环索对既有网架结构进行加固，能够通过预应力钢索张拉形成的张拉应力，转化成预应力，并对竖向撑杆产生向上的承托力减少网架结构的变形，提高结构强度与稳定性。
External prestressing reinforcing method for existing grid structure
The invention discloses an external prestressing reinforcing system of an existing net rack structure. Bolt-sphere connection nodes are adopted between adjacent steel pipes in an existing net rack; the lower ends of the partial bolt-sphere joints are connected with vertical supporting rods; the bolt-sphere joint is connected with the vertical supporting rod by forming a through hole in the bottom of the side wall. The lower ends of part of the vertical supporting rods are connected with endless cables, and the distribution positions of the endless cables are determined according to the span of the grid structure. In the connection mode of the ring cable and the vertical supporting rod lower chord, the supporting rod lower chord is connected with the ball cable clamp in a welded mode, and the ring cable body penetrates through a middle hole of the ball cable clamp to be fixedly connected. Displacement of the grid structure is controlled through the endless cable, the overall stability of the grid structure is improved, and local stress concentration is reduced; the existing grid structure is reinforced through the inhaul cables by utilizing the vertical supporting rods, the prestressed steel inhaul cables and the ring cables, tension stress formed by tensioning the prestressed steel cables can be converted into prestress, upward bearing force is generated on the vertical supporting rods, deformation of the grid structure is reduced, and the structural strength and stability are improved.
本发明公开了一种既有网架结构的体外预应力加固系统，既有网架中相邻钢管之间采用螺栓球连接节点；部分螺栓球节点下端连接竖向撑杆；螺栓球节点通过在侧壁底部开设通孔与竖向撑杆相连接。部分竖向撑杆的下端连接有环索，环索根据网架结构跨度确定分布位置。环索与竖向撑杆下弦的连接方式中，撑杆下弦与球索夹通过焊接连接，环索索体穿过球索夹中间孔固定连接；利用环索控制网架结构位移，提升网架结构整体稳定性，减少局部应力集中；通过拉索利用竖向撑杆、预应力钢拉索和环索对既有网架结构进行加固，能够通过预应力钢索张拉形成的张拉应力，转化成预应力，并对竖向撑杆产生向上的承托力减少网架结构的变形，提高结构强度与稳定性。
External prestressing reinforcing method for existing grid structure
一种既有网架结构的体外预应力加固方法
ZHANG WEIJING (Autor:in) / XU ZHIYONG (Autor:in)
20.12.2024
Patent
Elektronische Ressource
Chinesisch
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