水工隧洞衬砌混凝土多尺度开裂机理及防裂技术研究进展

doi:10.3969/j.issn.1674-0696.2024.12.04

摘要/Abstract

摘要： 水工隧洞承载着引水、输水、排水等重要功能，是国家水网建设中的重要组成部分。随着西部地区大洞径、深埋深的水工隧洞结构的出现，众多学者针对衬砌混凝土裂缝形成机理进行了研究。首先，基于文献阅读与整理，从水工衬砌混凝土缺陷类型出发，发现衬砌裂缝为病害的重要原因之一，其成为了制约输引水效率的关键因素；其次，根据衬砌裂缝产生的原因及其导致的严重工程后果，对围岩预测、温控措施、混凝土材料性能提升及智能温控养护技术等防裂技术进行了讨论；然后，从多尺度耦合分析模型出发，对钢筋混凝土衬砌的劣化原因进行了总结；最后，基于衬砌混凝土在实际工程中所受的真实荷载及环境条件，展望使用多尺度耦合分析模型，为揭示衬砌混凝土开裂机理提供一种新的方法。

关键词: 水利工程；水工隧洞；衬砌混凝土；开裂机理；防裂措施；多尺度模型

Abstract: Hydraulic tunnels carry important functions such as water diversion, water transmission and drainage, and are an important part of the national water network construction. With the emergence of large diameter and deep buried hydraulic tunnel structures in western region, many scholars have studied the formation mechanism of lining concrete cracks. Firstly, based on the literature review and organization, starting from the types of defects in hydraulic lining concrete, it was found that lining cracks were one of the important causes of diseases, which became a key factor restricting the efficiency of water transportation and diversion. Secondly, according to the causes of lining cracks and their serious engineering consequences, anti-cracking technologies such as surrounding rock prediction, temperature control measures, concrete material performance improvement and intelligent temperature-controlled maintenance technology were discussed. Then, the causes of deterioration of reinforced concrete lining were summarized from the multi-scale coupled analysis model. Finally, based on the real loads and environmental conditions that lining concrete was subjected to in actual projects, it was expected to use a multi-scale coupled analysis model to provide a new method to reveal the cracking mechanism of lining concrete.

Key words: hydraulic engineering; hydraulic tunnel; lining concrete; cracking mechanism; anti-cracking measures; multi-scale model

中图分类号:

TV431

王浩宇1，李鹏飞 1，聂鼎 2. 水工隧洞衬砌混凝土多尺度开裂机理及防裂技术研究进展[J]. 重庆交通大学学报（自然科学版）, 2024, 43(12): 27-40.

WANG Haoyu1, LI Pengfei1, NIE Ding2. Advance of Research on Multi-scale Cracking Mechanism and Anti-cracking Technology of Hydraulic Tunnel Lining Concrete[J]. Journal of Chongqing Jiaotong University(Natural Science), 2024, 43(12): 27-40.

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