复合土钉墙在市区深基坑支护工程中的应用

Application of Composite Soil-nailing Wall in Urban Deep Foundation Pit Support Engineering

摘要:

以济南市区深基坑支护工程实例为背景，分析了在周边环境复杂，使用土地范围受限情况下的市区开展深基坑支护工程，采用复合土钉墙支护技术，利用其形式多样、组合灵活的特点，充分发挥组合中各部件的优点，取长聚优，在保证安全的前提下以期达到技术经济的最佳；同时总结了施工中各个工序的施工要点和关键技术措施。监测数据显示基坑位移变形小，未对周边环境造成不良影响，说明支护体系发挥了良好的实施效果。

Abstract:

This paper introduces a deep foundation pit support project in urban area ofJinan, which was constructed under the conditions of complex surrounding environment and limited land area. The composite soil-nailing wall support technology used in this project is analyzed, with its characteristics of various forms and flexible combination, the advantages of each component in the assembly gave full play. The construction points and key technical measures of each construction procedure are summarized. The monitoring data show that the small displacement and deformation have no adverse affects to the surrounding environment and the support system has good effect.