地铁车站叠合墙裂缝生成机理与控制要点

CRACK GENERATION MECHANISM AND KEY CONTROL POINTS FOR SUBWAY STATION SUPERIMPOSED WALL

某地铁车站叠合墙施工中,对多个流水段的墙体裂缝进行统计分析和长期观察,得出裂缝原因在于叠合墙自身缺陷,混凝土骨料质量不合格,施工不规范,气温高和流水段长设置不当等,针对上述原因提出了裂缝处理措施。

During superimposed wall construction of a subway station, statistical analysis and long- term observation were carried out for wall crack in several flow processes. It was found that the crack was caused by defect of superimposed wall, disqualification of concrete aggregate, nonstandard construction, high air temperature and inappropriate length of flow process. This paper proposed crack treatment measures with considering of the aforementioned reasons.