大跨度多环曲面弧拱施工创新方法

Innovated Construction Approach of Large Space Arch with Multi-ring and Curved Surface

该曲面砖混弧拱最大净跨度达3.85 m,通过"先砌后浇、外砌内浇"的方式进行施工,该弧拱由三环多孔页岩砖组成由内环向外环逐环错台砌筑而成,通过钢筋网片将砖内及混凝土过梁内纵筋连接,使外饰面清水砖与混凝土过梁形成整体,采用异型砖确保灰缝同宽,既达到了清水墙的饰面效果,又确保了砖混弧拱的整体性。

The space of concrete and masonry arch with curved surface brick is 3.85m, constructed by ＂first laying and then watering, inside laying and outside watering＂. The arch is consisted of three rings of porous brick, and constructed from inner ring to outer ring, and connected the reinforcement in the brick and concrete lintel by steel net, made the outside brick with fair face and concrete lintel as a whole. Adopt the complicate shaped brick to ensure the width of mortar joint unify and radian of the wall, obtain both effect of fair face veneer and integrity of concrete and brick arch.