工程力学 ›› 2019, Vol. 36 ›› Issue (S1): 234-239.doi: 10.6052/j.issn.1000-4750.2018.05.S046

• 土木工程学科 • 上一篇    下一篇

封闭形式对大跨度煤棚风荷载影响研究

孙一飞1, 张磊杰1, 刘庆宽2,3, 刘小兵2,3, 马文勇2,3   

  1. 1. 石家庄铁道大学土木工程学院, 石家庄 050043;
    2. 石家庄铁道大学风工程研究中心, 石家庄 050043;
    3. 河北省风工程和风能利用工程技术创新中心, 石家庄 050043
  • 收稿日期:2018-05-02 修回日期:2019-02-27 出版日期:2019-06-18 发布日期:2019-06-18
  • 通讯作者: 刘庆宽(1971-),男,河北人,教授,博士,博导,主要从事桥梁与结构的风荷载、风致振动与控制研究(E-mail:lqk@stdu.edu.cn). E-mail:lqk@stdu.edu.cn
  • 作者简介:孙一飞(1993-),男,河北人,硕士生,主要从事桥梁抗风研究(E-mail:syf931124@163.com);张磊杰(1991-),男,河北人,硕士生,主要从事桥梁抗风研究(E-mail:leijiezhang587@163.com);刘小兵(1982-),男,湖南人,副教授,博士,主要从事桥梁的风致振动与控制研究(E-mail:x_b_liu@126.com);马文勇(1981-),男,陕西人,教授,博士,主要从事结构抗风研究(E-mail:mawenyong@126.com).
  • 基金资助:
    国家自然科学基金面上项目(51778381);河北省自然科学基金重点项目(E2018210044);河北省高等学校高层次人才项目(GCC2014046);石家庄铁道大学硕士研究生创新资助项目(YC2018022)

STUDY ON THE INFLUENCE OF CLOSED FORM ON WIND LOAD OF LONG-SPAN COAL SHED

SUN Yi-fei1, ZHANG Lei-jie1, LIU Qing-kuan2,3, LIU Xiao-bing2,3, MA Wen-yong2,3   

  1. 1. School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang, 050043, China;
    2. Wind Engineering Research Center, Shijiazhuang Tiedao University, Shijiazhuang, 050043, China;
    3. Innovation Center for Wind Engineering and Wind Energy Technology of Hebei Province, Shijiazhuang, 050043, China
  • Received:2018-05-02 Revised:2019-02-27 Online:2019-06-18 Published:2019-06-18

摘要: 煤棚属于风敏感结构,为了控制工程安全,该文进行了风荷载研究。该文通过刚性模型测压试验,分析了风向角对典型测点和分块区域体型系数和极值风压系数的影响规律,研究了全封闭状态(两端山墙)和半封闭状态(只有一端山墙)对体型系数和极值风压系数的影响规律。研究表明:与全封闭状态相比,半封闭状态下,内压对风压分布的影响程度增大,并且当开口处于迎风区,内压为正值;当开口处于背风区,内压为负值,易引起主体风荷载在某些风向角范围内产生较大力矩,将导致分块区域的极值风荷载增大。

关键词: 煤棚, 全封闭状态, 半封闭状态, 体型系数, 极值风压系数

Abstract: A coal shed is a wind-sensitive structure for the sake of its characteristics of a long span, large flexibility and small damping. The study on wind load is of important engineering significance. In this paper, a rigid model manometry test was conducted to analyze the influence of the wind direction angle on the shape coefficients and the extreme wind pressure coefficients of typical measurement points and blocks. And the influences of the enclosed state (both ends of the gable) and the semi-closed state (one end gable) on shape coefficients and extreme wind pressure coefficients were studied. The results show that internal pressure will influence the wind pressure distribution more remarkably in a semi-closed state. And when the opening is in the windward area, the internal pressure is positive. when the opening is in the leeward zone, the internal pressure is negative, which easily causes a main wind load to generate a large torque in some wind direction angles, may resulting in the increase of a extreme wind load in the block area at the same time.

Key words: coal shed, enclosed state, semi-closed state, shape coefficient, extreme wind pressure coefficient

中图分类号: 

  • TU312.1
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