A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Bridge concrete anti-collision guardrail longitudinal connection analysis method and design
The invention discloses a longitudinal connection analysis method and design for a bridge concrete anti-collision guardrail. The bridge concrete anti-collision guardrail comprises prefabricated guardrail sections which are formed by prefabricated concrete; the two adjacent longitudinal prefabricated guardrail end faces of the prefabricated guardrail segments are each provided with a concave hinge opening, the opening directions of the two concave hinge openings are opposite, and the two concave hinge openings are in butt joint to form a connecting hinge opening. The cast-in-place hinge body is shaped like a Chinese character'zhong ', and the cast-in-place hinge body is arranged in the connecting hinge opening; after the side edge of the connecting hinge opening is sealed, a high-strength concrete material is poured and formed; the hinge joint design method comprises the steps of preliminary design, strength checking calculation, optimization objective design and optimization checking calculation. According to the method, a reliable theoretical model is established, a clear strength design value is provided, and the reliability of longitudinal connection is guaranteed; the deformation value of the anti-collision guardrail under the collision action of a vehicle can be reduced; the reduction amount of the deformation value of the guardrail reaches 75%; the steel consumption of the anti-collision guardrail can be reduced, and the steel bar consumption is reduced by 25%.
本发明公开了一种桥梁混凝土防撞护栏纵向连接分析方法及设计，包括预制护栏节段，预制护栏节段由预制混凝土成型；预制护栏节段的相邻两个纵向预制护栏端面上分别开设有“凹”字形铰口，两个“凹”字形铰口的开口方向相对设置，两个“凹”字形铰口对接组成连接铰口；现浇铰体，呈“中”字形，现浇铰体设置于连接铰口内；将连接铰口侧边封缝后，由高强混凝土材料灌注成型；其中铰缝设计方法包括初步设计、强度验算、设计优化目标和优化验算。本发明建立可靠的理论模型，提出明确的强度设计值，保障纵向连接的可靠性；可以减少防撞护栏在车辆撞击作用下的变形值；护栏变形值的减少量达75％；可以减少防撞护栏的用钢量，钢筋用量减少量达25％。
Bridge concrete anti-collision guardrail longitudinal connection analysis method and design
The invention discloses a longitudinal connection analysis method and design for a bridge concrete anti-collision guardrail. The bridge concrete anti-collision guardrail comprises prefabricated guardrail sections which are formed by prefabricated concrete; the two adjacent longitudinal prefabricated guardrail end faces of the prefabricated guardrail segments are each provided with a concave hinge opening, the opening directions of the two concave hinge openings are opposite, and the two concave hinge openings are in butt joint to form a connecting hinge opening. The cast-in-place hinge body is shaped like a Chinese character'zhong ', and the cast-in-place hinge body is arranged in the connecting hinge opening; after the side edge of the connecting hinge opening is sealed, a high-strength concrete material is poured and formed; the hinge joint design method comprises the steps of preliminary design, strength checking calculation, optimization objective design and optimization checking calculation. According to the method, a reliable theoretical model is established, a clear strength design value is provided, and the reliability of longitudinal connection is guaranteed; the deformation value of the anti-collision guardrail under the collision action of a vehicle can be reduced; the reduction amount of the deformation value of the guardrail reaches 75%; the steel consumption of the anti-collision guardrail can be reduced, and the steel bar consumption is reduced by 25%.
本发明公开了一种桥梁混凝土防撞护栏纵向连接分析方法及设计，包括预制护栏节段，预制护栏节段由预制混凝土成型；预制护栏节段的相邻两个纵向预制护栏端面上分别开设有“凹”字形铰口，两个“凹”字形铰口的开口方向相对设置，两个“凹”字形铰口对接组成连接铰口；现浇铰体，呈“中”字形，现浇铰体设置于连接铰口内；将连接铰口侧边封缝后，由高强混凝土材料灌注成型；其中铰缝设计方法包括初步设计、强度验算、设计优化目标和优化验算。本发明建立可靠的理论模型，提出明确的强度设计值，保障纵向连接的可靠性；可以减少防撞护栏在车辆撞击作用下的变形值；护栏变形值的减少量达75％；可以减少防撞护栏的用钢量，钢筋用量减少量达25％。
Bridge concrete anti-collision guardrail longitudinal connection analysis method and design
一种桥梁混凝土防撞护栏纵向连接分析方法及设计
WANG HAIYUAN (author) / CHEN CHANGHAI (author) / MA YONGJIE (author) / WANG CHENGHU (author) / PAN BAOLIN (author) / ZHONG LIANDE (author) / ZHAO XIN (author) / LI PENGCHENG (author) / ZHANG HONGSONG (author) / SHEN LINLIN (author)
2024-08-20
Patent
Electronic Resource
Chinese
| European Patent Office | 2024
Bridge concrete anti-collision guardrail and construction method thereof
| European Patent Office | 2024