| Asymmetric tendon disposition cable-stayed bridge is a new cable-stayed bridge.It's conspicuous character is not only different from ordinary cable-stayed bridge that horizontal force in two sides of stay cable for bridge tower can keep balance with dead load,but also different from no back-stays cable-stayed bridge completely substituting the deadweight of inclined pylon for the back stays force to counteract the girder deadweight of main-span.Back-stays of this kind of bridge not only can provide resisting moment for tower,but also can change the whole bridge's property through adjust cable tension.So,this kind of cable-stayed bridge appears different regular rule with ordinary cable-stayed bridge when strained an aberration exist under external load.Presently,this type of bridges are few.More systematic research for some crucialness problem will be helpful for the develop of the bridge type.This paper is based on an Asymmetric tendon disposition cable-stayed bridge.Frist analyse the condition of locale homeostasis and local balance in the structures with dead load,discussing the influence agent of locale homeostasis and local balance and the character of the structure of static balance,else,discuss the condition of most reasonable parameter in choice through changing the parameters which is effect for strained an aberration of bridge.Second,pay special attention for temperature pattern's influence to strained an aberration when anlyse every efficient that influence structure's static characteristic Considering from the intensity of solar radiation in structure,using regression analysis method to make sure the composite temperature for every direction of tower in structure , assoclating the caiculated effects of Element Analyse Software,getting out that allocation rule for inimical time of temperature pattern , allocation rule of temperature pattern with time and the most disadvantage of temperature distribution longitudinal and transverse direct,acting on the structure to calculate the influence of stay cables,main beam,bridge pylon,comopering to the dead load. |
