摘要
以含密实管基、脱空管基和高聚物修复管基的腐蚀排水管道为研究对象,针对不同车辆轴载下3种不同管基状态的腐蚀管道开展现场足尺试验。根据现场试验分别建立含密实、脱空和高聚物修复管基的腐蚀排水管道精细化三维有限元模型,对试验结果的可靠性进行验证。研究结果表明:实测数据和模拟结果吻合度较高,最大误差仅为10.9%;车辆轴载质量从15 t增加到20 t和25 t时,脱空管道承插口管顶内壁应变相对于密实管道分别增加了62%、54%、38%和36%、14%、11%,说明管底脱空可显著改变管道的受力状态;密实和修复管道承插口内外壁环向应变十分接近,表明高聚物注浆预处理技术修复管底脱空效果显著。
The corrosion drainage pipes with dense pipe bedding,void pipe bedding and polymer repaired pipe bedding were taken as the research object,and the field full-scale test was carried out for corrosion pipes with three different pipe bedding states under different vehicle axle loads.According to the field test,the refined three-dimensional finite element models of corroded drainage pipes with dense,void and polymer repaired pipe beddings were established,respectively,and the reliability of the test results was verified.The results showed that the measured data were in good agreement with the simulation results,and the maximum error was only 10.9%.When the vehicle axle load increased from 15 t to 20 t and 25 t,the strains on the inner wall of the bell and spigot crown of the void pipe were increased by 62%,54%,38%and 36%,14%and 11%,respectively,compared with that of the dense pipe,which indicated that the void pipe bedding could significantly change the stress state of the pipe.The circumferential strains on the inner and outer walls of the bell and spigot of the dense pipe were very close to the repaired pipe,which indicated that the polymer grouting pretreatment technology had a significant effect on repairing the void pipe bedding.
作者
王复明
李斌
方宏远
WANG Fuming;LI Bin;FANG Hongyuan(School of Water Conservancy Engineering,Zhengzhou University,Zhengzhou 450001,Henan,China;National Local Joint Engineering Laboratory of Major Infrastructure Testing and Rehabilitation Technology,Zhengzhou 450001,Henan,China;Collaborative Innovation Center of Water Conservancy and Transportation Infrastructure Safety,Zhengzhou 450001,Henan,China)
出处
《隧道与地下工程灾害防治》
2019年第3期1-8,共8页
Hazard Control in Tunnelling and Underground Engineering
基金
国家重点研发计划资助项目(2016YFC0802400)
国家自然科学基金资助项目(51978630,51678536)
河南省重大科技专项资助项目(171100310100)
河南省教育厅高校科技创新人才计划资助项目(19HASTIT043)
郑州大学优秀青年人才科研基金资助项目(1621323001)
河南省高校科技创新团队支持计划资助项目(18IRTSTHN007)
关键词
排水管道
脱空
腐蚀
高聚物注浆
足尺试验
有限元模型
drainage pipes
void
corrosion
polymer grouting
full-scale test
finite element model
