At this point conversion, beambear a greater vertical force, the bottom of beam appears large tensile stress easily. The conversion layer slab with upper wall appears stress concentration easily.
此时转换主梁则在较小的传力区域内承受集度较大的竖向力，受力变得不利，梁底容易集中出现较大的拉应力。
2
On the basis of relevant test, the curved bear capacity of carbon fiber cloth reinforce reinforcing bar steel fiber concrete beam is studied.
在有关试验的基础上，对碳纤维布加固钢筋钢纤维混凝土梁的抗弯承载力进行了试验研究。
3
When the door frame is seriously distorted, the main beam, the supporting legs, the lower beam, the trolley and the connecting piece of the frame can bear large distortion stress.