同济大学学报（自然科学版）2025，Vol.53Issue(12)：1793-1805,13.DOI:10.11908/j.issn.0253-374x.24246
综合管廊新型带肋超高性能混凝土板的抗弯性能
Flexural Performance of UHPC Plate with Ribs in Comprehensive Utility Tunnel
摘要
Abstract
To address issues such as multi-compartment design,heavy self-weight,and susceptibility to cracking and water leakage in prefabricated assembled reinforced concrete(RC)box utility tunnels,this paper proposes a ribbed ultra-high performance concrete(UHPC)utility tunnel structure.Static loading tests were conducted on UHPC plates with three different cross-sectional shapes,rectangular,trapezoidal,and flat,with varying rib heights,to analyze the effects of parameters such as reinforcement ratio,rib height-to-width ratio,steel strength,and UHPC compressive and tensile strengths on the flexural behavior of the components.The results indicate that all specimens exhibit under-reinforced failure,with the steel reinforcement yielding while the compressive capacity of the UHPC is fully utilized.Under the same material usage,the rectangular ribbed plate demonstrates significantly higher load-bearing capacity and stiffness than the trapezoidal ribbed and flat plates.A 50 mm increase in rib height improved the load-bearing capacity by approximately 20%.Increasing the reinforcement ratio,rib height,steel strength,and UHPC tensile strength effectively enhances the load-bearing performance of the ribbed UHPC plates.In particular,using steel reinforcement with a yield strength exceeding 785 MPa or a reinforcement ratio above 2.5%cause the failure mode to shift from under-reinforced to an appropriately reinforced mode.关键词
隧道工程/综合管廊/静载试验/超高性能混凝土板/破坏模式/抗弯性能Key words
tunnel engineering/utility tunnel/static load test/ultra-high performance concrete(UHPC)/plate/failure mode/flexural performance分类
建筑与水利引用本文复制引用
夏樟华,陈俊杰,陈晖,黎雅乐,陈永康..综合管廊新型带肋超高性能混凝土板的抗弯性能[J].同济大学学报（自然科学版）,2025,53(12):1793-1805,13.基金项目
国家自然科学基金(52008187) （52008187）
福建省自然科学基金(2022Y0046) （2022Y0046）
福建省建设科技项目(2022-k-223,2022-k-224) （2022-k-223,2022-k-224）
