隧道复合式衬砌收缩裂缝产生原因浅析

Analysis on the generating reasons of the combined lining shrink crack of tunnel

结合具体工程实例,分析了隧道复合式衬砌收缩裂缝产生的原因,并从控制变形、减少约束、提高混凝土的抗拉强度和极限拉伸、减少和避免应力集中几方面重点提出了相应的裂缝控制措施,以保证隧道复合式衬砌的质量。

Combined with the specific project example, it analyses the generating reasons of the combined lining shrink crack of tunnel, and puts forward the corresponding crack control steps from controlling the deformation, decrease the restraining, increasing the tensile strength and limited tension, decreasing and avoiding the stress concentration, to assure the quality of the combined lining of tunnel.