某后加室外弧形楼梯出现的问题与处理

对某改造工程中后增室外弧形楼梯中出现的裂缝进行分析及加固处理.弧形楼梯的设计中,梯段板的内、外两侧抗扭钢筋应加强,梯段两端支座可视为固结,连接梯段与基础的墙不宜为砖砌体,可为混凝土墙,以抵抗楼梯推力.

Analysis and Disposal on Cracks of a Arc Outside Stairs Added to the Building

The reasons of some cracks in an arc outside stair added in a building and strengthening method to solve the problemare discussed in this paper.The torsion steels in two sides(outside and inside) of the arc stair tread need to be reinforced possibly to resist twist moment.Two supports of the stair may be considered to be fixed;and the wall connecting the stairs to base should be made of RC instead of brick to ensure the stair to bear the push force effectively.