The simplified formulas used to calculate the masonry structure lateralrigidity and internal force are presented.
提出确定底层框架砖房抗震墙数量的简化方法，对砖墙侧移刚度及内力分析提出了简化的实用计算公式。
2
Due to train derailments on Bridges, influence on train derailment on bridge caused by bridge lateralrigidity is analyzed.
结合发生过脱轨事故的桥梁，定性分析了桥梁横向刚度对列车脱轨的影响。
3
The lateralrigidity limit values determined by the new method can ensure trains to run on Bridges with smoothness and comfort, and also can prevent derailment.