采用荷载缓和体系的单向张弦梁结构静力性能研究  

Static mechanical performance research of one-way beam string structure with load relieving system

作　　者：刘国光[1] 武志玮[1] 易莹[1] 

机构地区：[1]中国民航大学机场学院,天津300300

出　　处：《建筑结构》2014年第4期78-81,共4页Building Structure

基　　金：国家自然基金面上项目(51178456);中国民航大学校级科研项目(2012KYE08);中央高校基本科研业务费中国民航大学专项资助项目(3122013D010);中国民航大学青年骨干教师项目;中国民航大学实验室创新项目(011302)

摘　　要：荷载缓和装置能缓和构件内力、自动调整结构形状,实现结构自我保护。介绍了一种新型荷载缓和装置,给出了其在单向张弦梁结构中的应用,采用ANSYS有限元软件对构件内力和结构位移进行了理论计算,讨论了其对张弦梁结构静力性能的改进,并分析了桁架间距、跨度、预应力值和弹性刚度系数对荷载缓和效果的影响。结果表明,荷载缓和装置通过调整结构形状使结构内力重分布,降低杆件峰值内力及受压杆件内力,充分利用材料强度,有效改善了单向张弦梁结构静力性能。该新型荷载缓和装置拓展了荷载缓和体系的应用范围。Load relieving device can significantly relieve internal forces of structural components, automatically adjust structural shape and help structure achieve self-protection. A new type of load relieving device was introduced and is applied in a one-way beam string structure. Internal forces of structural components and structural displacements were calculated theoretically by using ANSYS finite element software. The improvement on the static mechanical performance on beam-string structure by using load relieving device was discussed. And influences of truss distance, span, prestress value and elastic stiffness coefficient on load relieving effect were conducted respectively. The results show that the structural internal forces are redistributed through the adjustment of the structural shape by load relieving device, in which the peak internal forces decrease as well as compression forces of truss components. The material strength is fully used and the structural static mechanical performance of one-way beam string structure is significantly improved. The new type of load relieving device extends the application area of the load relieving system

关 键 词：空间结构 荷载缓和体系 张弦梁结构 静力性能 

分 类 号：TU393.3[建筑科学—结构工程]