城市狭窄场地深基坑联合支护技术应用研究

Research on the Construction Technology of Deep Foundation under Narrow and Long Construction Site Condition

近年来,随着经济的发展社会的进步,城市建设规模逐渐加大,为了节约地上空间,节省土地资源,高层建筑、地下建筑、隧道等工程大幅度增加,充分利用地下空间的深基坑工程也随之增加。城市深基坑工程,施工场地狭窄,开挖较深,土方开挖难度大,施工运输困难。本文在对常用深基坑支护技术进行对比分析的基础上,结合工程实例,对混凝土灌注桩、喷射混凝土相结合的联合支护方式进行应用效果分析,目前,此类深基坑支护问题已经成为基坑支护的新课题,文章对城市狭窄环境下的深基坑支护技术施工优化提出对策建议。深基坑工程施工问题对整个建筑施工起着举足轻重的影响。

High buildings, underground structures and even the tunnels have been widely constructed during the recent decent with the fast development and progress of science and technology. The deep foundation became the favorite option for these structures in order to sufficiently use the underground space and saving the land resources, in which however, the construction technology of the deep foundation played critical role in structure performance and need to be paid more attention. According to study on many project application and research achievement of deep foundation pit support construction technology particular under narrow and long construction site condition, a comparison analysis and the practical study have been developed, a review and measurements have also been brought up based on the anulication.