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A platform for research: civil engineering, architecture and urbanism
Large-diameter prestress tensioning control method for mixed tensioning U-shaped beam
The invention relates to the technical field of U-shaped beam prefabrication, in particular to a large-diameter prestress tensioning control method for a mixed tensioning U-shaped beam. The invention provides a large-diameter prestress tensioning control method for a mixed tensioning U-shaped beam. The large-diameter prestress tensioning control method comprises the following steps that firstly, a bottom die and a side die of the U-shaped beam are installed on a tensioning base; secondly, a U-shaped steel reinforcement framework is formed through binding, intelligent steel strands and prestressed tendons are arranged at the bottom of the formed U-shaped steel reinforcement framework, and then two bent corrugated pipes are arranged at the belly positions of the two sides of the U-shaped steel reinforcement framework; thirdly, the bottom die and the side dies are cleaned, and then the U-shaped steel reinforcement framework is hoisted into the bottom die and the side dies; and fourthly, the intelligent steel strands and the prestressed tendons are tensioned through tensioning equipment. Errors caused by prestress loss in the construction process are reduced, the prestress control precision is effectively improved, and the situation that due to the large errors, the applied pressure is too large, and consequently the position of a web of a U-shaped beam body cracks is avoided.
本发明涉及U型梁预制技术领域，具体涉及一种混张U形梁的大直径预应力张拉控制方法。本发明提供的一种混张U形梁的大直径预应力张拉控制方法，包括如下步骤：第一步、将U型梁的底模、侧模安装到张拉座上；第二步，绑扎成U型钢筋骨架，并在成型的U型钢筋骨架的底部位置分别布置智能钢绞线和预应力筋，再在U型钢筋骨架的两侧腹部位置分别布置两根弯曲波纹管；第三步，清理底模和侧模，然后将U型钢筋骨架吊装到底模和侧模内；第四步，利用张拉设备对智能钢绞线和预应力筋张拉。减小施工过程中由预应力损失引起的误差，有效提高预应力的控制精度，避免了因误差较大，造成施加压力过大导致U型梁梁体腹板位置开裂的情况。
Large-diameter prestress tensioning control method for mixed tensioning U-shaped beam
The invention relates to the technical field of U-shaped beam prefabrication, in particular to a large-diameter prestress tensioning control method for a mixed tensioning U-shaped beam. The invention provides a large-diameter prestress tensioning control method for a mixed tensioning U-shaped beam. The large-diameter prestress tensioning control method comprises the following steps that firstly, a bottom die and a side die of the U-shaped beam are installed on a tensioning base; secondly, a U-shaped steel reinforcement framework is formed through binding, intelligent steel strands and prestressed tendons are arranged at the bottom of the formed U-shaped steel reinforcement framework, and then two bent corrugated pipes are arranged at the belly positions of the two sides of the U-shaped steel reinforcement framework; thirdly, the bottom die and the side dies are cleaned, and then the U-shaped steel reinforcement framework is hoisted into the bottom die and the side dies; and fourthly, the intelligent steel strands and the prestressed tendons are tensioned through tensioning equipment. Errors caused by prestress loss in the construction process are reduced, the prestress control precision is effectively improved, and the situation that due to the large errors, the applied pressure is too large, and consequently the position of a web of a U-shaped beam body cracks is avoided.
本发明涉及U型梁预制技术领域，具体涉及一种混张U形梁的大直径预应力张拉控制方法。本发明提供的一种混张U形梁的大直径预应力张拉控制方法，包括如下步骤：第一步、将U型梁的底模、侧模安装到张拉座上；第二步，绑扎成U型钢筋骨架，并在成型的U型钢筋骨架的底部位置分别布置智能钢绞线和预应力筋，再在U型钢筋骨架的两侧腹部位置分别布置两根弯曲波纹管；第三步，清理底模和侧模，然后将U型钢筋骨架吊装到底模和侧模内；第四步，利用张拉设备对智能钢绞线和预应力筋张拉。减小施工过程中由预应力损失引起的误差，有效提高预应力的控制精度，避免了因误差较大，造成施加压力过大导致U型梁梁体腹板位置开裂的情况。
Large-diameter prestress tensioning control method for mixed tensioning U-shaped beam
一种混张U形梁的大直径预应力张拉控制方法
ZHAN YULIN (author) / AN JIAWEI (author) / HUANG YUANYUAN (author) / ZHANG CHENG (author) / FAN ZIHAO (author) / SHAO JUNHU (author) / JIANG HAIJUN (author) / YUE ZHANGSHENG (author) / WAN SHUMIN (author)
2023-01-31
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
Prestress automatic tensioning trolley and tensioning method thereof
| European Patent Office | 2023