国家体育场桁架柱柱脚锚固性能试验研究  

Experimental study on anchorage performance of steel column base of the National Stadium

作　　者：曹万林[1] 薛素铎[1] 张毅刚[1] 范重[2] 王春光[2] 张晓新[1] 谢龙宝[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100022 [2]中国建筑设计研究院,北京100044

出　　处：《建筑结构学报》2007年第2期126-133,共8页Journal of Building Structures

基　　金：北京市科技计划项目(H050630210720)

摘　　要：国家体育场钢柱脚锚固于钢筋混凝土承台中,其受力复杂,以往国内外类似的设计及试验均很少。本文共进行了4个钢柱脚-钢筋混凝土承台试件锚固性能的试验研究,其中2个为混凝土承台中配置抗拔钢筋的试件,2个为混凝土承台中未配置抗拔钢筋的试件。通过单向重复加载下的钢柱脚锚固性能试验,对试件的锚固承载力、延性、合理配筋型式等进行了研究。试验表明,混凝土承台中配置抗拔钢筋的试件与未配置抗拔钢筋的试件相比其锚固承载力和延性显著提高。在试验基础上,建立了柱脚锚固承载力计算的桁架模型,计算结果与实测结果符合较好。The steel column base of the main truss structure of the National Stadium is anchored in reinforced concrete pile cap, where the stress state is complex, lacking similar experiments in literature. Four experimental programs were carried out to investigate the anchorage performance of steel column bases. The two specimens are reinforced with pull-out resistant shear bar and the other two specimens are not. Through the tests on the anchorage performance of steel column base under repeated loads, the tested ultimate loads, ductility and reasonable modes of reinforcement design of specimens are presented in this paper. Test results reveal that the ultimate loads and ductility of the specimens with pull-out resistant shear bar were higher than those of the specimens without pull-out resistant shear bar. Based on the experimental studies, the simplified mechanic model is proposed. The calculating results agree well with the experimental results.

关 键 词：国家体育场 钢柱脚 混凝土承台 锚固性能 试验研究 

分 类 号：TU393.3[建筑科学—结构工程] TU317.1