摘要
为解决在大跨度煤棚中,复杂气流和结构相互作用使得风荷载传递过程较为复杂问题,研究山墙疏透率对大跨度煤棚风荷载的影响。计算获得极值风压系数、整体风力系数以及风荷载体型系数,获取能够反映风荷载变化的关键参数。根据模拟试验结果可知,提高山墙疏透率,能够促进大跨度煤棚内外空气流通,实现气体的交换,使得煤棚风吸力得到有效降低。山墙疏透率增加,煤棚中内压更加影响风压分布,产生正值内压,但是当煤棚山墙处于背风风向角时,煤棚中形成负值内压,造成主体风荷载出现极大力矩。
In order to solve the problem that the wind load transfer process is complicated due to the complex interaction between airflow and structure in the long-span coal shed,the influence of gable permeability on the wind load of the long-span coal shed was studied.The extreme wind pressure coefficient,the overall wind force coefficient and the shape coefficient of wind load were calculated,and the key parameters that can reflect the change of wind load were obtained.The simulation test results showed that improving the gable permeability promoted the air circulation inside and outside the long-span coal shed,realizing the gas exchange,and effectively reduced the wind suction of the coal shed.When the gable permeability increased,the internal pressure in the coal shed had more impact on the distribution of wind pressure,resulting in positive internal pressure.However,when the gable wall was in the leeward wind direction,the negative internal pressure was formed in the coal shed,resulting in the extreme torque of the main wind load.
作者
肖希
XIAO Xi(CCTEG Beijing Huayu Engineering Co.,Ltd.,Pingdingshan 467000,Henan China)
出处
《粘接》
CAS
2024年第3期161-164,共4页
Adhesion
关键词
山墙疏透率
大跨度煤棚
风荷载
风吸力
正值内压
gable permeability
large-span coal shed
wind load
wind suction
positive internal pressure
