天津津门工程深基坑综合施工技术

天津津门工程基坑面积大、坑深,施工场地狭窄,周边环境及地质条件复杂,土方开挖受基底承压水影响较大,支护结构、土方开挖工作量大.本文详细介绍深基坑采用支护桩、立柱桩、内支撑、降水、土方开挖、内支撑爆破拆除等施工方案的具体要点、步骤及结果;施工过程中对深基坑进行信息化监测,为工程顺利实施可提供有力保证.实践证明,施工措施效果良好,有效解决了复杂环境下超大深基坑施工过程中的技术难题.

Synthesis Construction Technology of Deep Pit in Tianjin Jinmen Project

The pit project in Tianjin Jinmen is large area and deeper,the site is limited,geological environment condition is complex,the pit excavation is affected by the confined groundwater,the quantity of support structure and earthwork is large.Detailed key point,steps and results of construction scheme of support pile,soldier pile,inner support,reduce level of water,earthwork,blast to demolish the inner support and so on were introduced detailed in the paper;The informationization supervision and measure was fulfilled for the deep pit during construction,and thus provided guarantee for the project fulfill successful.The fact prove that,the effect of construction measures was good,the technique difficult problems of super large and deep pit under the complex environment conditions during construction was solved effectively.