支撑体系刚度对预应力空心板桥的受力行为影响研究

A study on the impact of supporting system' s stiffness about the prestressed concreted core slab's stress behavior

结合湖南宜章某桥(主桥为简支系杆拱桥、引桥为预应力空心板),通过参数变异改变该主桥支撑体系(即主桥端横梁)刚度,分析研究了主桥端横梁的刚度变化对引桥预应力空心板桥的受力行为,为合理设置主桥端横梁刚度防止引桥预应力空心板开裂提出科学建议.

Taking a bridge in Yizhang of Hunan as an example,in which the main bridge is simply-supporting tied arch bridge and the approach is prestressed hollow slab.the influences of the prestressed hollow slab of the approach with different stiffness of supported system of the main bridge (end floor beam of the main bridge) is analyzed in this paper.The research provides a scientific proposal for setting stiffness of end floor beam of the main bridge and preventing the cracking of the prestressed hollow slab as we...