高层建筑工程中,深基坑的开挖与支护结构,是一项主要的分部工程,对整个工程的造价、工期都有十分重要的影响。最近深基坑倒塌事故时有发生,对工程造成极大危害,因此,深基坑问题受到了广泛的重视。 基坑开挖与开挖深度、地质、水文及现场环境条件密切相关,在下列情况下,开挖时要采取支护措施:基坑开挖 In high-rise building projects, the excavation and support structure of deep foundation pits is a major division project, which has a very important impact on the cost and duration of the entire project. The accidents of the collapse of deep foundation pits occurred from time to time and caused great damage to the project. Therefore, the deep foundation pit problem has received extensive attention. The excavation of excavation is closely related to the excavation depth, geology, hydrology and on-site environmental conditions. Under the following conditions, support measures shall be taken during excavation: excavation of foundation pits.