框架逆作深基坑中土体回弹对立柱桩的影响

Influences of soil rebound on erect piles in the framework reverse construction excavation

结合上海塘东总部基地中块地下空间项目,针对框架逆作法施工中土体回弹对立柱桩的影响进行现场监测,实测数据分析表明,立柱隆起量与工程工况,立柱离围护墙的距离成正比关系,随着开挖深度的加大,隆起量越大。

Combined with Shanghai Tang East Central headquarters base project, the effects of soil rebound on erect piles in framework reverse construction excavation were on-site monitoring, measured dates showed that the heave of erect piles was proportional to the construction steps and the distance between the enclosure wall and erect piles. The deeper the excavation depth, the greater the amount of the heave.