摘要
针对目前混凝土斜拉桥在施工控制中应力监测作为存在的难题,提出了一种适用于大跨度混凝土斜拉桥主梁应力监测新方法。该方法利用主梁中性轴应力只与斜拉索水平分力有关这一特点,根据实测索力求出中性轴应力,据此校准中性轴的实测应力并识别徐变系数,继而求出其余应力。
In consideration that the stress monitoring is a difficult point in the present construction control of concrete cablestayed bridge, a kind of new method applicable to the stress monitoring for the main girder of longspan concrete cablestayed bridge is proposed. Taking advantage that the neutral axial stress of the main girder is only related to the horizontal component of the stay cables, the method provides solution of the neutral axial stress according to the actual measurement of cable force with which the actuallymeasured stress of the neutral axis can be calibrated and the creep coefficients can be identified, and further, the solution of the remaining stress will be derived.
出处
《桥梁建设》
EI
CSCD
北大核心
2003年第1期55-58,共4页
Bridge Construction
基金
广东省自然科学基金资助项目(000387)
