玻璃纤维筋混凝土在盾构进出洞工程中的应用

以广州市轨道交通9号线盾构进出洞工程为例,简要介绍了玻璃纤维筋的性质及力学性能。从安全性、经济性、工期以及施工工艺等方面对比分析了钢筋混凝土地下连续墙与玻璃纤维筋混凝土地下连续墙的优缺点。事实证明玻璃纤维筋混凝土地下连续墙在端头井加固的投入、进出洞施工环境、人力物力投入、施工工期等方面均得到较大改进,极大地降低了盾构进出洞的安全风险。

Application of Glass Fiber Reinforced Concrete in Shield Tunnel Construction

Base on the shield departure and arrival engineer-ing of Guangzhou metro Line 9,the nature and mechanical property of GFRC is briefly introduced, the continuous rein-forced concrete shield wall is compared with GFRC diaphragm wall from aspects of safety,economic effectiveness,construc-tion period and technology. The result shows that GFRC di-aphragm wall is on the end of tunnel and will improve the construction environment of departure and arrival holes,save human and material resources,shorten construction period and so on,and finally reduce the security risks of shield tunnel.