水力发电学报2025，Vol.44Issue(5)：113-124,12.DOI:10.11660/slfdxb.20250510
储气硐室钢筋混凝土衬砌的渐进断裂模拟研究
Numerical simulation of progressive cracking in reinforced concrete liner of high-pressure gas storage cavern
摘要
Abstract
Reinforced concrete liner serves as a critical component in the structural integrity of artificially excavated underground gas storage caverns.Its cracking and deformation characteristics in response to the high internal gas pressure significantly affect the design and operational performance of the cavern's sealing structure.This study adopts a fixed crack model for concrete simulations to evaluate the design of the reinforced concrete liner for a JQ high-pressure gas storage cavern in Gansu province.We first validate it against a four-point bending beam tests in literature,then conduct a series of numerical simulations of the non-linear fractures in the cavern liner,focusing on the progressive development of multiple cracks and their opening widths in response to gradually increase of gas pressure in the cavern.An analysis is also made on the effect of omitting the reinforcing measure and the effect of accounting for the hysteresis effect of concrete cracking on the liner's fracture response during the fluctuating cycles of internal pressure.The results show that the liner's progressive cracking is characterized by a multi-crack distribution,predominantly distributed radially and extending through the entire liner thickness.Based on the design parameters for concrete and reinforcement,we attain the liner's maximum crack opening controlled below 1 mm under an internal pressure of 18 MPa,and demonstrated the cycling of pressurization and depressurization in the cavern does not significantly deteriorate the crack opening in a reinforced concrete liner.The results deepen the understanding of liner cracking for the design of support structures and sealing layers of gas storage caverns,and help predict cavern liner cracking for service performance.关键词
压缩空气储能/储气硐室/高内压/钢筋混凝土/滞回效应Key words
compressed air energy storage/artificial gas storage cavern/high internal pressure/reinforced concrete/hysteresis effect分类
土木建筑引用本文复制引用
崔玉柱,胡万瑞,周元德,张存慧,杜晶,张国强..储气硐室钢筋混凝土衬砌的渐进断裂模拟研究[J].水力发电学报,2025,44(5):113-124,12.基金项目
中国博士后基金科学基金第17批特别资助(2024T170760) （2024T170760）
中国博士后基金科学基金第75批面上资助(2024M7527460) （2024M7527460）
