摘要
为研究超高性能混凝土(ultra-high performance concrete,UHPC)对钢筋混凝土连续梁中支点区域抗剪性能的影响,利用ANSYS软件建立中支点区域填充不同长度UHPC的两跨钢筋混凝土连续梁力学模型,并分析所建立模型的抗剪承载力和破坏形式。结果表明:中支点区域填充不同长度UHPC钢筋混凝土,连续梁中支点区域的抗剪承载力较普通混凝土(normal concrete,NC)连续梁依次提高了20%、42%、92%、148%,其出现初始斜裂缝的荷载较普通混凝土连续梁提高了13%、56%、250%、402.5%。中支点区域填充不同长度UHPC能有效提高钢筋混凝土连续梁中支点区域的抗剪承载力及整体抗弯刚度。
To study the influence of ultra-high performance concrete(UHPC)on the shear resistance performance of reinforced concrete continuous beams,the mechanical models of two-span reinforced concrete continuous beams with different lengths of UHPC filled in the mid-span support area were established using ANSYS software,and the shear bearing capacity and failure mode of the established models were analyzed.The results show that the shear bearing capacity of the reinforced concrete continuous beams with different lengths of UHPC filled in the mid-span support area is increased by 20%,42%,92%,and 148%respectively compared with that of the ordinary concrete(NC)continuous beams,and the load at which the initial inclined cracks appear is increased by 13%,56%,250%,and 402.5%respectively compared with that of the ordinary concrete continuous beams.Filling different lengths of UHPC in the mid-span support area can effectively improve the shear bearing capacity and overall flexural rigidity of the reinforced concrete continuous beams.
作者
朱芮
李春良
李胜男
李翔宇
王鼎盛
ZHU Rui;LI Chunliang;LI Shengnan;LI Xiangyu;WANG Dingsheng(School of Communication science and engineering,Jilin Jianzhu University,Changchun 130118,China)
出处
《技术与市场》
2025年第7期17-22,共6页
Technology and Market
基金
吉林省教育厅科学技术研究项目(JJKH20220292KJ)。
关键词
超高性能混凝土(UHPC)
连续梁
中支点区域
抗剪承载力
剪压破坏
ultra-high performance concrete(UHPC)
continuous beam
mid-span support area
shear capacity
shear-compression failure
