确定集中荷载作用下U型槽边墙有效计算宽度  

Determination of Effective Calculation Width of Sidewall of U-shaped Channel under Concentrated Load

作　　者：钟凡 

机构地区：[1]广东潮惠高速公路有限公司,广州510100

出　　处：《广东公路交通》2013年第4期20-22,共3页Guangdong Highway Communications

摘　　要：在U型槽结构计算中,一般取U型槽线路方向1延米宽度的板带作为计算单元,按弹性理论简化为平面模型进行计算。但在实际工程中,U型槽边墙墙顶往往需要设置雨棚支柱等设施,使得边墙承受水平集中荷载,此时,如何合理确定集中荷载作用下U型槽边墙有效计算宽度成为U型槽设计中不可避免的问题。为此,采用三维仿真分析的方法对此类问题进行分析,找出了边墙在集中荷载作用下的内力分布规律,确定了有效计算宽度的计算公式,并据此提出多个集中荷载作用下有效计算宽度的计算公式,为设计者提供借鉴和参考。One meter long U-shaped channel is usually used as the calculating unit for U-shaped channel structure calculation, by being simplified into plane model as in accordance with the theory of elasticity. However, in actual engineering practice, concentrated horizontal load often appears for the sidewall due to building of canopy pillars on its top, so it has become inevita ble to reasonably determine the effective calculation width of the sidewall of U-shaped channel. In this article, the method of three-dimensional simulation analysis has been adopted to find out the internal force distribution laws of sidewalls under concen trated load, with the formula for effective calculation width determined, furthermore, formula for effective calculation width un der multiple concentrated loads has been concluded, which can provide references for similar designs.

关 键 词：U型槽边墙 集中荷载 有效计算宽度 

分 类 号：U441.5[建筑科学—桥梁与隧道工程]