八度抗震区超高层建筑基础底板施工技术

Construction Technology of Foundation Slab of Super High-rise Building in Eight Degree Earthquake Resistant Area

八度抗震区建筑结构抗震性能要求高,给区域内建筑基础底板施工带来了不小难度。为应对高抗震区建筑基础底板施工的难题,以兰州某超高层建筑为例,从卵石层、强风化砂质泥岩地基排水、场地狭小、昼夜温差大、气候干燥、大体积混凝土裂缝控制等难点,提出了一系列针对性解决措施。经实际工程验证,施工效果良好,为类似工程提供了借鉴经验。

The requirement of earthquake resistant performance for building structure in eight degree earthquake resistant area is high,which brings great difiuly to the construction of foundalion slab in the area.To deal with the ificult construction problem of building foundatin slab in earthquake resistant area.taking a super high-rise building in Lanzhou as an example,according to the difculties such as of pebble layer,highly weathered sandy mudstone foundation drainage,narrow construction site,large temperature difference between day and night,dry climate,mass concrete crack control and so on,a series of targeted solutions are put forward.After the practical engineering verification,the construction effect is good,which provides the reference experience for similar projects.