A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Multi-tower cable-stayed bridge restraint system and design method thereof
The invention relates to a design method of a multi-tower cable-stayed bridge restraint system. The multi-tower cable-stayed bridge restraint system comprises an elastic cable restraint system and a fixed restraint system. The elastic cable restraint system comprises an elastic cable, the fixed restraint system comprises a longitudinal fixed support, and a gap is reserved between the longitudinal fixed support and the steel truss girder; the design method comprises the following steps: establishing a finite element model of the multi-tower cable-stayed bridge, calculating an elastic cable constraint system according to a railway operation load, and determining parameters of an elastic cable; the fixed constraint system is calculated according to the additional load through a finite element model, and the design counter-force of the longitudinal fixed support is determined under the condition that the maximum elongation of the elastic cable is equal to the gap; and elastic cables and longitudinal fixing supports are installed, and the multi-tower cable-stayed bridge restraint system is formed. According to the multi-tower cable-stayed bridge restraint system, linear change of structural displacement under the train load effect is guaranteed, and structural seismic response is reduced as much as possible; the problem that the cable force is large due to the fact that only the longitudinal elastic cable bears the longitudinal force is solved.
本申请涉及一种多塔斜拉桥约束体系的设计方法，多塔斜拉桥约束体系包括弹性索约束体系和固定约束体系；弹性索约束体系包括弹性索，固定约束体系包括纵向固定支座，纵向固定支座与钢桁梁之间预留间隙；设计方法包括：建立多塔斜拉桥的有限元模型，按照铁路运营荷载对弹性索约束体系进行计算，确定弹性索的参数；通过有限元模型，按照附加荷载对固定约束体系进行计算，以弹性索的最大伸长量与间隙相等为条件，确定纵向固定支座的设计反力；安装弹性索、纵向固定支座，形成多塔斜拉桥约束体系。本发明提供的多塔斜拉桥约束体系，保证在列车荷载作用下结构位移线性变化，尽量降低结构地震响应；解决了单纯由纵向弹性索承受纵向力导致的索力大等难题。
Multi-tower cable-stayed bridge restraint system and design method thereof
The invention relates to a design method of a multi-tower cable-stayed bridge restraint system. The multi-tower cable-stayed bridge restraint system comprises an elastic cable restraint system and a fixed restraint system. The elastic cable restraint system comprises an elastic cable, the fixed restraint system comprises a longitudinal fixed support, and a gap is reserved between the longitudinal fixed support and the steel truss girder; the design method comprises the following steps: establishing a finite element model of the multi-tower cable-stayed bridge, calculating an elastic cable constraint system according to a railway operation load, and determining parameters of an elastic cable; the fixed constraint system is calculated according to the additional load through a finite element model, and the design counter-force of the longitudinal fixed support is determined under the condition that the maximum elongation of the elastic cable is equal to the gap; and elastic cables and longitudinal fixing supports are installed, and the multi-tower cable-stayed bridge restraint system is formed. According to the multi-tower cable-stayed bridge restraint system, linear change of structural displacement under the train load effect is guaranteed, and structural seismic response is reduced as much as possible; the problem that the cable force is large due to the fact that only the longitudinal elastic cable bears the longitudinal force is solved.
本申请涉及一种多塔斜拉桥约束体系的设计方法，多塔斜拉桥约束体系包括弹性索约束体系和固定约束体系；弹性索约束体系包括弹性索，固定约束体系包括纵向固定支座，纵向固定支座与钢桁梁之间预留间隙；设计方法包括：建立多塔斜拉桥的有限元模型，按照铁路运营荷载对弹性索约束体系进行计算，确定弹性索的参数；通过有限元模型，按照附加荷载对固定约束体系进行计算，以弹性索的最大伸长量与间隙相等为条件，确定纵向固定支座的设计反力；安装弹性索、纵向固定支座，形成多塔斜拉桥约束体系。本发明提供的多塔斜拉桥约束体系，保证在列车荷载作用下结构位移线性变化，尽量降低结构地震响应；解决了单纯由纵向弹性索承受纵向力导致的索力大等难题。
Multi-tower cable-stayed bridge restraint system and design method thereof
一种多塔斜拉桥约束体系及其设计方法
LIU HANSHUN (author) / LUO KOU (author) / HUANG XIJUN (author) / WANG DONGHUI (author) / CHEN ZHITAO (author) / ZHENG HAN (author) / ZHOU JIANHONG (author) / PENG LINGFENG (author) / DONG XUEZHI (author) / JIN YANJUN (author)
2023-11-28
Patent
Electronic Resource
Chinese
Inclined single-tower cable-stayed bridge restraint system and design and application method thereof
| European Patent Office | 2023