论文部分内容阅读
以在建的宝应二桥现浇混凝土刚性斜拉杆为研究对象 ,对该桥所采用的刚性斜拉杆设计方法及其现场浇筑混凝土施工方法进行试验及分析 ,以检验按设计方法所求得的斜拉索拉力N和设计所确定的预应力索线型 (圆曲线半径R与曲线矢高f)是否适宜。从而保持斜拉杆的设计线型 ,避免混凝土斜拉杆在张拉过程中变形过大甚至开裂 ,同时也对钢束在管壁内的贴合情况和预应力摩阻损失进行了试验分析。
Taking Baoying No2 Bridge cast-in-place concrete rigid diagonal pull rod under construction as the research object, the design method of rigid diagonal pull rod adopted by the bridge and the on-site pouring concrete construction method are tested and analyzed to test the slope obtained according to the design method The cable tension N and the design of the prestressed cable type (circular curve radius R and curve height f) are appropriate. So as to maintain the design line of the diagonal pull rod and prevent the concrete diagonal pull rod from deforming too much or even cracking during the tensioning process. At the same time, the test of the fit of the steel beam in the pipe wall and the prestressing frictional loss are carried out.