【作者】 王雷； 章劲松；

【Author】 Wang Lei;Zhang Jin-song;Department of Civil Engineering,Anhui Communications Vocational & Technical College;School of Civil Engineering and Architecture,Changsha University of Science and Technology;

【机构】 安徽交通职业技术学院土木工程系； 长沙理工大学土木与建筑工程学院；

【摘要】 针对巳有的简支T梁横向分布系数计算方法的局限性,从荷横向分布的基本概念出发,提出桥梁空间计算所应遵循的基本原理,通过建立铰接板的空间计算模型讨论了多片主梁在荷载、挠度和内力三者具有相同变化规律的理论条件与近似条件;建立了T梁桥横向分布计算的空间有限元模型,探讨了分别按荷载、挠度、弯矩三种方法确定横向分布的方法,并论证了按荷载计算横向分布系数的可靠性;釆用空间有限元模型分别求解出各主梁的横向分布系数及其沿桥跨方向的变化,研究了横隔梁刚度对横向分布系数的影响;部分算例验证了本文计算方法具有较高的精度,可供广大工程技术人员参考。更多还原

【Abstract】 For the limitation of existed calculation method for transverse distribution factors of simple supported T beam, the basic principle in 3-D bridge analysis is proposed from the basic concept of transverse distribution.The theoretical condition and approximate condition is discussed for the same variation of load,deflection and internal force on mutiple beam according to the spatial calculation model of hinge plate beam.The spatial finite element calculation model for transverse distribution of T beam is built to explore the method of transverse distribution calculation separately accord with load, deflection and moment.And the reliability for the calculation mehod accord with load is proved in this paper.The transverse distribution factors of each beam and their changes along the span are solved and the influence of cross beam rigidity to transverse distribution is researched by the spatial finite element model.Some calculation examples have proved the higher accuracy of this method.It is also a reference for the engineers.更多还原