基于ANSYS溶蚀作用下薄壁衬砌混凝土裂缝修复

ANSYS-BASED CRACK REPAIR OF THIN WALL LINING CONCRETE SUBJECT TO CORROSION

水工薄壁混凝土在外界温度、作用力、长期软水溶蚀等诸多复杂环境的影响下,易出现开裂现象。本研究以某配水工程实例为背景,首先通过现场检测确定输水隧洞薄壁衬砌混凝土裂缝类型,并提出利用环氧材料对最不利裂缝进行修复的方案。然后运用ANSYS对修复方案进行建模分析,并与现场实际修复情况进行对比,验证了对最不利裂缝的修复,可以降低衬砌结构出现应力集中的概率,阻止水的渗透,延长结构实际使用寿命。

Hydraulic thin wall concrete is prone to cracking due to the impact of various environmental factors such as the ambient temperature,force and long-term corrosion in soft water.In this study,taking a water distribution project as an example,the crack types of thin wall lining concrete of the tunnel was determined first through field testing,and a repair solution was proposed for the most unfavorable cracks with epoxy materials.Then the repair solution was modeled and analyzed by ANSYS,and compared with field repair results,to verify the repair of the most unfavorable cracks,thereby reducing the probability of stress concentration of lining structures,prevent water penetration and extending the service life of these structures.