移动车辆载荷作用下简支梁的绝对最大弯矩分析  

作　　者：张琴[1] 杨敬林[1] 崔浩[1] 

机构地区：[1]湖南农业大学工学院,湖南长沙410128

出　　处：《江西建材》2016年第1期192-192,198,共2页Jiangxi Building Materials

摘　　要：计算移动车辆荷载作用下简支梁的绝对最大弯矩,当临界荷载与合力对称于中点时,临界荷载下截面的弯矩达到最大值,利用三角形影响线确定临界荷载的判别式来确定临界荷载,移动载荷组使临界荷载与合力对称于中点,计算临界荷载作用点截面的弯矩,即为绝对最大弯矩。When the critical load and the resultant force are symmetric at the midpoint of the simple beam, absolute maximum bending moment of simple beam under moving vehicle loads is calculated. The bending moment of the cross section under the critical load reached the maximum,the critical load is determined by using the triangle influence line to determine the critical load. In the moving load group, the critical load and the resultant force are symmetric at the midpoint, and the bending moment, which is the absolute maximum moment, is calculated.

关 键 词：移动荷载 简支梁 最不利位置 影响线 绝对最大弯矩 

分 类 号：O571.3[理学—粒子物理与原子核物理]