基于隧道支护系统的B10加固混凝土界面粘接效应研究  

Research on the interface bonding effect of B10 reinforced concrete based on tunnel support system

作　　者：高锡鹏 田雪凯 李洛宁 GAO Xipeng;TIAN Xuekai;LI Luoning(Shandong Electric Power Engineering Consulting Institute Co.,Ltd.,Jinan 250199,China;School of Qilu Transportation,Shandong University,Jinan 250002,China)

机构地区：[1]山东电力工程咨询院有限公司,山东济南250199 [2]山东大学齐鲁交通学院,山东济南250002

出　　处：《粘接》2025年第1期55-58,共4页Adhesion

摘　　要：针对交通隧道初期支护时湿喷混凝土性能不足、回弹大等问题,通过选取5 d及1 a的预制混凝土试块制备试件,将B10加固混凝土界面剂注入其中填充粘接,进行抗剪强度、拉伸强度、抗压强度、抗弯强度等性能测试,深入分析测试了B10胶粘剂混凝土界面剂与混凝土界面的粘接效应。实验结果表明:养护时间、温度对混凝土试件强度具有正相关;在抗弯强度测试中,各温度下混凝土试件的最大弯曲应变均显著高于技术指标450,具有良好的抗弯曲性能;在受压弹性模量测试中B10试件各项数据均符合要求,不低于2 MPa。最后根据不同材料性能对比发现:B10加固混凝土界面剂材料性能优秀,对于优化隧道支护系统、提高支护系统的安全性和稳定性具有重要现实意义。In response to the problems of insufficient performance and large rebound of wet sprayed concrete dur⁃ing the initial support of traffic tunnels,precast concrete specimens were selected for 5 days and 1 year to prepare specimens.B10 reinforced concrete interface agent was injected into them for filling and bonding,and performance tests of shear strength,tensile strength,compressive strength,flexural strength and other properties were carried out,and the bonding effect of the B10 adhesive concrete interface agent and the concrete interface was analyzed and tested in depth.The experimental results showed that the curing time and temperature had a positive correlation with the strength of the specimens.In the flexural strength test,the maximum bending strain of concrete specimens at all temperatures was significantly higher than the technical index of 450,indicating good flexural performance.In the compressive elastic modulus test,all data of B10 specimen met the requirements and were not less than 2 MPa.Finally,based on the comparison of material properties,it was found that B10 reinforced concrete interface agent had excellent material properties,which is of great practical significance for optimizing tunnel support systems,im⁃proving the safety and stability of support systems.

关 键 词：交通隧道 喷混凝土 内聚力模型 塑性损伤 B10胶粘剂 

分 类 号：TQ178[化学工程—硅酸盐工业]