水利学报2024，Vol.55Issue(3)：336-343,8.DOI:10.13243/j.cnki.slxb.20230754
高压水道钢筋混凝土夹心钢板衬砌研发与性能验证
Research and performance verification of high-pressure waterway reinforced concrete sandwich steel plate lining
摘要
Abstract
To address the issues of water seepage and susceptibility to buckling in steel plate linings of high-pres-sure waterways,a novel reinforced concrete sandwich steel plate lining has been devised.This lining,primarily comprising an inner layer of reinforced concrete,a steel plate,and an outer layer of reinforced concrete,aims to enhance structural integrity.Performance validation involved a model test under alternating high internal and exter-nal water pressures to examine deformation stresses and load-sharing variations.The results revealed that under ex-ternal pressure,the lining maintains a compressed state with a relatively constant load distribution among its com-ponents.The steel plate experienced a compressive stress of only 1.47 MPa,which is significantly lower than the critical stress of 20.25 MPa,indicating a minimal risk of instability or buckling.Under internal pressure,the lin-ing is subject to tension,with the inner concrete layer prone to cracking before the outer layer.Prior to crack for-mation,the load-sharing remains essentially unchanged.After cracking,the load borne by the concrete decreases and that borne by the steel plate and the surrounding rock increases.Despite this,the steel plate's tensile stress does not exceed 28.01 MPa,which is far lower than its ultimate tensile strength.Relative to conventional linings,this innovative structural solution demonstrates enhanced performance in managing the demands of high-pressure a-quatic environments.关键词
钢筋混凝土/夹心钢板衬砌/内外水压力/荷载分担比Key words
reinforced concrete/sandwich steel plate lining/internal and external water pressure/load sharing ratio分类
建筑与水利引用本文复制引用
裴江荣,汪小刚,魏小令,刘和艺,陈天楠,刘立鹏..高压水道钢筋混凝土夹心钢板衬砌研发与性能验证[J].水利学报,2024,55(3):336-343,8.基金项目
国家自然科学基金项目(52179121) （52179121）
中国水利水电科学研究院基本科研业务费专项(GE0145B012021) （GE0145B012021）
流域水循环模拟与调控国家重点实验室自主研究课题(SKL2022ZD05) （SKL2022ZD05）
