A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
P anchor for main tower cross beam of cable-stayed bridge and construction method
The invention relates to the technical field of cable-stayed bridge main tower cross beam construction and particularly relates to a P anchor for a cable-stayed bridge main tower cross beam and a construction method. The P anchor comprises a P anchor plate, an extrusion anchor, a steel strand, a restraint ring and a corrugated pipe, wherein the P anchor plate is an anchoring end, one end of the steel strand is sleeved with the extrusion anchor, and the other end of the steel strand is sleeved with the restraint ring; the steel strand symmetrically penetrates through round holes in the P anchor plate from a front face and a back face of the P anchor plate respectively, one end of the steel strand, the extrusion anchor and the P anchor plate are fixed to one side of the anchoring end, the other end of the steel strand penetrates through a restraining rings respectively, penetrates out of a corrugated pipe in the cross beam and are arranged on two sides of the cross beam, and the other end of the steel strand is a tensioning end; The P anchor is advantaged in that the P anchor plate and the extrusion anchor are arranged on one side of an anchoring end of an anchoring device, it is guaranteed that a section centroid of a prestressing tendon is always on the same straight line in the asynchronous tensioning process of the beam prestressing tendon, and the force transmission effect is improved; the adverse effect on the cross beam of the cable-stayed bridge caused by the fact that the two ends of the prestressed tendons cannot be tensioned synchronously due to limitation of embedded parts is avoided.
本发明涉及斜拉桥主塔横梁施工技术领域，具体涉及一种斜拉桥主塔横梁用P锚及施工方法，其包括P锚板、挤压锚、钢绞线、约束圈和波纹管，所述P锚板为锚固端，所述钢绞线的一端套装有挤压锚，所述钢绞线从P锚板的正、反面分别对称穿过P锚板上的圆孔，所述钢绞线的一端同挤压锚和P锚板固定于锚固端一侧，所述钢绞线的另一端分别穿过约束圈从横梁内波纹管穿出置于横梁两侧，所述钢绞线的另一端为张拉端；其有益效果如下：本发明中锚具锚固端一侧设置有P锚板和挤压锚，保证横梁预应力筋在异步张拉过程中预应力束的截面形心始终在一条直线上，提高了力的传递效果；解决了由于预埋件制约导致的预应力筋不能两端同步张拉对斜拉桥横梁产生的不利影响。
P anchor for main tower cross beam of cable-stayed bridge and construction method
The invention relates to the technical field of cable-stayed bridge main tower cross beam construction and particularly relates to a P anchor for a cable-stayed bridge main tower cross beam and a construction method. The P anchor comprises a P anchor plate, an extrusion anchor, a steel strand, a restraint ring and a corrugated pipe, wherein the P anchor plate is an anchoring end, one end of the steel strand is sleeved with the extrusion anchor, and the other end of the steel strand is sleeved with the restraint ring; the steel strand symmetrically penetrates through round holes in the P anchor plate from a front face and a back face of the P anchor plate respectively, one end of the steel strand, the extrusion anchor and the P anchor plate are fixed to one side of the anchoring end, the other end of the steel strand penetrates through a restraining rings respectively, penetrates out of a corrugated pipe in the cross beam and are arranged on two sides of the cross beam, and the other end of the steel strand is a tensioning end; The P anchor is advantaged in that the P anchor plate and the extrusion anchor are arranged on one side of an anchoring end of an anchoring device, it is guaranteed that a section centroid of a prestressing tendon is always on the same straight line in the asynchronous tensioning process of the beam prestressing tendon, and the force transmission effect is improved; the adverse effect on the cross beam of the cable-stayed bridge caused by the fact that the two ends of the prestressed tendons cannot be tensioned synchronously due to limitation of embedded parts is avoided.
本发明涉及斜拉桥主塔横梁施工技术领域，具体涉及一种斜拉桥主塔横梁用P锚及施工方法，其包括P锚板、挤压锚、钢绞线、约束圈和波纹管，所述P锚板为锚固端，所述钢绞线的一端套装有挤压锚，所述钢绞线从P锚板的正、反面分别对称穿过P锚板上的圆孔，所述钢绞线的一端同挤压锚和P锚板固定于锚固端一侧，所述钢绞线的另一端分别穿过约束圈从横梁内波纹管穿出置于横梁两侧，所述钢绞线的另一端为张拉端；其有益效果如下：本发明中锚具锚固端一侧设置有P锚板和挤压锚，保证横梁预应力筋在异步张拉过程中预应力束的截面形心始终在一条直线上，提高了力的传递效果；解决了由于预埋件制约导致的预应力筋不能两端同步张拉对斜拉桥横梁产生的不利影响。
P anchor for main tower cross beam of cable-stayed bridge and construction method
一种斜拉桥主塔横梁用P锚及施工方法
YANG LIMING (author) / LI FENG (author) / WANG WEI (author) / KANG JIAN (author) / YUE YANG (author) / WANG SHUMING (author) / ZHANG XUEHONG (author) / HE CHENGHUANG (author) / CHEN BINGUI (author) / ZHANG LUSHENG (author)
2021-12-28
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
Construction method for bracket steel anchor beam of main tower of cable-stayed bridge
| European Patent Office | 2024
Cable-stayed bridge main tower cross beam construction bracket and construction method thereof
| European Patent Office | 2024
| European Patent Office | 2022
Construction method for upper cross beam and tower crown of main tower of cable-stayed bridge
| European Patent Office | 2023
Construction method for main tower of cable-stayed bridge
| European Patent Office | 2022