简支桥梁转刚构桥梁理论分析及近似计算

Theoretical Analysis and Approximate Calculation of Simply Supported Bridge Turn to Rigid Frame Bridge

一般在桥梁结构设计过程中,我们以前普遍采用简支桥梁结构或是刚结构桥梁,而目前则出现了采用两种结构形式相结合的新的设计方式,即由简支梁到连续刚构梁的转变.这种结构在桥梁施工中具有很多优点,同时其受力情况也比较复杂.对该种类型的桥梁部分结构作了理论上的分析,针对桥梁的受弯、受压、受剪三种受力情况结合结构力学求解器进行了近似计算,使计算过程得到了简化,计算结果更加接近实际值,同时这也可以更好地指导工程实践,保证桥梁结构的安全性.

In the general design process of the structure of bridge,the structure of simply supported beam or steel beam is adopted,but now it has appeared a new combination of two structural forms,namely from simply supported beam to beam continuous rigid frame change.This structure has many advantages in the bridge construction,while its force situation is more complicated.The structure of the bridge types in this paper is analyzed theoretically.For bridge flexural,compressive,shear force conditions,It is approximately calculated by using structural mechanics solver,which made the calculation process more simplified and more closed to the actual values.At the same time,it can better guide the engineering practice and ensure the safety of the bridge structure.