Study Of The Cable-Stayed Bridge Without Backstays

The cable-stayed bridge has become a more hopeful bridge style in the great span bridges because of its great merits ,such as its great power for span , good performance of structure , brief construction , easy to maintaining , model legerity , lower cost and restricting noises .Nowadays, some new bridge structures such as low pylon cable-stayed bridge and no back-stays & inclined pylon cable-stayed bridge etc. have become the ones for the building owners to appreciate when they construct the middle-span bridges . This article will introduce at length the author's labor in no back-stays & inclined pylon cable-stayed bridge , and hope to benefit to its further development and design .No back-stays & inclined pylon cable-stayed bridge is a new one . She has very prominent mechanical characters that it substitutes the deadweight of inclined pylon for the back stays force to counteract the girder deadweight of main-span . Presently, this type bridge is few.The article, taking Hei-he Road Bridge in the center of Jiu-quan secondary planet for engineering background and employing finite element program to research this bridge , draws some significant conclusions. The main contents include inherent vibration feature , stability characters , effect of geometry non-linearity and the tower obliquity , impact of system different temperature and local different temperature etc. The result in the article will provide the design references for the project of no back-stays & inclined pylon cable-stayed bridge.