UHPC排水管道有限元分析及力学试验研究  

Finite Element Analysis and Mechanical Test of UHPC Drainage Pipeline

作　　者：林建新 Lin Jianxin(Xiamen Road and Bridge Xiangtong Tongan Construction Materials Co.Ltd.,Xiamen Fujian 361100)

机构地区：[1]厦门路桥翔通砼安建材有限公司,福建厦门361100

出　　处：《江西建材》2024年第12期304-307,共4页

摘　　要：为研究超高性能混凝土(UHPC)排水管道力学性能,文中以某排水工程为研究对象,利用MIDAS-FEA有限元软件对UHPC排水管道进行数值模拟,分析钢纤维掺量、环筋间距和内水压力对其力学性能的影响。结果表明,适量掺杂钢纤维和增大环筋间距有助于提升UHPC排水管道的力学性能。钢纤维掺量为1.4%的管道底部拉应变相比未掺杂时减少了22.04%。综上,推荐钢纤维最佳掺量为1.4%,最优环筋间距为100 mm,为UHPC排水管道设计优化提供理论依据。In order to study the mechanical properties of ultra-high performance concrete(UHPC)drainage pipe,MIDAS-FEA finite element software was used to numerically simulate the UHPC drainage pipe with a drainage project as the research object,and the effects of steel fiber content,ring rib distance and internal water pressure on its mechanical properties were analyzed.The results show that the mechanical properties of UHPC drainage pipe can be improved by proper doping of steel fiber and increasing the spacing of ring bars.The tensile strain at the bottom of the pipeline with steel fiber content of 1.4%is reduced by 22.04%compared with that without doping.In summary,the optimal steel fiber content is recommended to be 1.4%,and the optimal annulus spacing is 100 mm.It provides theoretical basis for UHPC drainage pipe design optimization.

关 键 词：UHPC 排水管道 有限元 力学性能 

分 类 号：TU99[建筑科学—市政工程]