论文部分内容阅读
自斜拉桥这种结构型式问世后,迅速得到推广且在全世界普及。该结构型式适合于较大跨度的结构,充分利用了高强度钢丝的能力,直接将吊点与塔柱连接起来,工艺比吊桥方便。 但由于钢丝是斜拉的,因此在产生垂直力以抵消重力的同时,还产生了水平向的分力。对于斜拉桥来说,这份水平力需要由主梁承担。在接塔柱的一段产生压力、在接近跨中的一段可能产生拉力。这种水平力对主梁来说是一种负担。
Since the advent of cable-stayed bridges, this type of structure has rapidly been popularized and popularized all over the world. The structure is suitable for large-span structure, make full use of the ability of high-strength steel wire, lifting points and pylons directly connected, the process easier than the suspension bridge. However, due to the cable is a cable-pulling, so in the vertical force to offset the gravity, but also produced a horizontal component. For cable-stayed bridges, this horizontal force needs to be borne by the main beam. Pressure is applied to the section of the tower and tension may occur in a section near the midspan. This horizontal force is a burden on the girders.