弯矩调幅法在连续梁计算中的研究  

The Bending Moment Amplitude Modulation Method on research of Continuous Beam Calculation

作　　者：李凯[1] 

机构地区：[1]新疆水利水电勘测设计研究院,新疆乌鲁木齐830000

出　　处：《广东水利水电》2016年第1期41-43,61,共4页Guangdong Water Resources and Hydropower

摘　　要：为了更好的解决厂房中楼梯内力计算值与实际值存在的差异,尽可能消除不合理的因素,引入了弯矩调幅的有限元计算法,对内力计算的弯矩值进行调整。本文阐述了弯矩调幅法的理论依据,并通过实例算例验证了该方法计算的可行性与合理性。最终计算结论说明:弯矩调幅系数与跨中弯矩值的调整值成线性关系,调整的幅度与外荷载以及结构支座的性质有关,弯矩调幅系数的选取受到结构塑性铰范围内的制约。in order to better solve the stairs in workshop internal force calculation value and actual value differences,eliminate the unreasonable factors,the introduction of the bending moment amplitude modulation of the finite element method,to adjust the bending moment of internal force calculation value.It is expounded in this article,the theoretical basis of the bending moment amplitude modulation method and through the instance example verifies the feasibility and rationality of the method.Final calculation conclusion：bending moment amplitude modulation factor and across a linear relationship with bending moment value adjustment,the adjustment range and the external load and the nature of the support structure,bending moment amplitude modulation factor selection is restricted by the structure within the scope of plastic hinge.

关 键 词：弯矩调幅法 连续梁内力计算 塑性铰 相对受压区高度 

分 类 号：TU323.3[建筑科学—结构工程]