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一.横向分布系数的提出及其重要性桥梁的荷载横向分布系数是一维解函数,平面杆系是一维有限元法,两者的结合与三维空间分析的纯数值相比,在同等精度下可节省工作量一至二个量级。故横向分布系数不但不会被淘汰,而且具有很高的实用价值。二.直桥横向分布系数理论的介绍及适用范围 1:对于中小桥常采用的简支装配式板梁,当对非标准跨径的板梁进行配筋设计时,应采用铰接板法计算横向分布系数。2:对于翼缘板刚性连接的肋梁桥,应采用刚接梁法。3:对于一般多梁式桥,一般用杠杆原理法来计算荷载位于靠近主梁支点时的横向分布系数。4:对于具有可靠横向联结(设多道横隔梁)的桥上,且桥的宽跨比B/L≤0.5,Dy/Dx>0.48时,宜采用修正偏心受压法。5:对于由主梁、连续的桥面
A horizontal distribution coefficient proposed and its importance Bridge lateral load factor is a one-dimensional solution function, planar rod system is a one-dimensional finite element method, a combination of the two and the three-dimensional space analysis of the pure numerical compared with the same precision Under the workload can be saved one or two orders of magnitude. Therefore, the horizontal distribution coefficient not only will not be eliminated, but also has a high practical value. Introduction and application scope of straight-bridge transverse distribution coefficient theory 1: For simple-supported prefabricated plate and plate girders commonly used in small and medium-sized bridges, when designing reinforcement for non-standard span girders, the hinge method should be used to calculate the horizontal Distribution factor. 2: For the rigid connection of the flange plate rib bridge, should be used just beam method. 3: For general multi-girder bridges, the principle of lever principle is generally used to calculate the lateral distribution coefficient when the load is close to the main beam fulcrum. 4: For bridge with reliable transverse connection (with multiple cross-beams), and with bridge span ratio B / L≤0.5 and Dy / Dx> 0.48, a modified eccentric compression method should be adopted. 5: For the bridge by the main beam, continuous deck