工程力学 ›› 2019, Vol. 36 ›› Issue (1): 146-154,164.doi: 10.6052/j.issn.1000-4750.2017.11.0815

• 土木工程学科 • 上一篇    下一篇

UHPC梁短期刚度理论与试验研究

徐明雪1, 梁兴文1, 于婧1, 李林2   

  1. 1. 西安建筑科技大学土木工程学院, 陕西, 西安 710055;
    2. 陕西建研结构工程股份有限公司, 陕西, 西安 710082
  • 收稿日期:2017-11-02 修回日期:2018-03-28 出版日期:2019-01-29 发布日期:2019-01-10
  • 通讯作者: 梁兴文(1952-),男,陕西人,教授,硕士,博导,从事建筑结构及抗震研究(E-mail:liangxingwen2000@163.com). E-mail:liangxingwen2000@163.com
  • 作者简介:徐明雪(1991-),男,江苏人,硕士生,从事土木工程新材料结构应用研究(E-mail:xumingxue1991@163.con);于婧(1982-),女,河南人,副教授,博士,硕导,从事新型材料及结构研究(E-mail:yujing1506@163.com);李林(1970-),男,陕西人,教授级高级工程师,硕士,从事建筑结构检测鉴定及加固方法研究(E-mail:lilin6832@163.com).
  • 基金资助:
    国家自然科学基金项目(51278402)

THEORETICAL AND EXPERIMENTAL INVESTIGATION ON IMMEDIATE STIFFNESS OF UHPC BEAMS

XU Ming-xue1, LIANG Xing-wen1, YU Jing1, LI Lin2   

  1. 1. College of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi 710055, China;
    2. Shaanxi Jianyan Structural Engineering Co., Ltd., Xi'an, Shaanxi 710082, China
  • Received:2017-11-02 Revised:2018-03-28 Online:2019-01-29 Published:2019-01-10

摘要: 超高性能混凝土(Ultra high performance concrete,简称UHPC)是一种具有高强度、高韧性、高耐久性和高抗冲击性能的水泥基复合材料。通过现有的两种刚度计算方法——有效惯性矩法及刚度解析法,结合UHPC材料特性,相应地建立了UHPC短期刚度计算方法。通过对12根UHPC梁试验结果的分析,发现该文建立的两种短期刚度计算方法均能有效地计算试验梁的短期刚度,精度满足工程计算要求,其中有效惯性矩法的计算值更接近试验值。

关键词: 超高性能混凝土, 短期刚度, 有效惯性矩法, 刚度解析法, 试验研究

Abstract: Ultra high performance concrete (UHPC) is a remarkable material exhibiting higher strength, toughness, durability and anti-impact property when compared with conventional concrete. In the study of deformation and stiffness of UHPC beams, the immediate stiffness calculation theory has not yet formed a unified method. In this study, the UHPC immediate stiffness calculation method was derived by using the effective inertia moment method and the stiffness analysis method respectively combined with the material properties of UHPC. Through experimental investigations of 12 UHPC test beams, it is found that the immediate stiffness was better calculated by the two immediate stiffness calculation methods and the accuracy satisfied engineering requirements. Compared with the stiffness analysis method, the values calculated from the effective inertia moment method were closer to experimental values.

Key words: ultra high performance concrete, immediate stiffness, effective inertia moment method, stiffness analysis method, experimental investigation

中图分类号: 

  • TU375.1
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