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在地下连续墙中盾构穿越区域采用GFRP筋代替钢筋,可以使盾构机进出洞时直接切削地下连续墙掘进,简化了施工工艺,加快了施工进度,减少了施工风险,节约了投资。但是,GFRP筋地下连续墙在开挖及地下结构施工过程中的工作性能和变形分布规律及影响因素等尚不明确。为此,本文对GFRP筋地下连续墙进行了施工全过程的有限元分析和现场监测,并将有限元分析结果与现场监测数据作了对比,在此基础上进行了影响因素分析,并提出了设计和施工建议。
The use of GFRP tendons to replace the steel bars in the continuous diaphragm wall can directly cut the underground continuous wall when the machine enters and exits the tunnel, simplifying the construction process, speeding up the construction progress, reducing the construction risk and saving investment. However, the performance and deformation distribution rules and influencing factors of GFRP tendons in underground excavation and underground structure construction are not clear. Therefore, in this paper, the finite element analysis and on-site monitoring of the GFRP tendons are carried out in the whole process of construction, and the results of the finite element analysis are compared with the on-site monitoring data. Based on this, the influencing factors are analyzed, Design and construction advice.