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结合某钢铁有限公司精炼厂钢坯坍陷区基坑施工及钢坯打捞工程,详细介绍了软土地区特殊工况条件下超深圆形基坑在开挖及钢坯打捞过程中基坑的变形及受力情况,并对周边建筑物的变形、水、土压力的变化情况进行分析。监测数据分析表明:采用圆形内衬支护的深基坑,当内衬结构不完整或土方开挖不均衡时,支护结构体系将在不平衡土压力的作用下发生不规则变形,内衬结构的完整性及土方开挖的均衡对称性对于圆形支护结构受力的合理性具有重要的意义,也进一步说明采用圆形内衬支护的深基坑,支护结构体系及周边环境的全程监测对确保基坑支护及周边环境安全具有重要的意义。
Combined with the foundation pit construction and billet salvage project of the billet collapse area in a refinery of a steel company, the deformation and stress of the foundation pit during the excavation and billet salvage under the special working conditions in soft soil area are introduced in detail Situation, and the deformation of surrounding buildings, water and earth pressure changes were analyzed. The monitoring data analysis shows that when the deep foundation pit with round lining is used, the supporting structure will be deformed irregularly under the effect of unbalanced earth pressure when the inner lining structure is incomplete or the earth excavation is not balanced. The integrity of the lining structure and the balanced symmetry of the earth excavation are of great significance to the rationality of the force of the circular supporting structure. The deep foundation pit supporting the circular lining and the structure of the supporting structure The whole environment monitoring is of great significance to ensure the support of the foundation pit and the surrounding environment.