东南大学学报（自然科学版）2016，Vol.18Issue(3)：572-577,6.DOI:10.3969/j.issn.1001-0505.2016.03.019
钢桁腹混凝土组合结构桥梁新型 PBL-钢管节点试验研究
Experimental study on new PBL-steel tube joint for steel truss-webbed concrete slab composite bridges
摘要
Abstract
A new PBL (perfobond leiste)-steel tube joint suitable for steel truss-webbed concrete slab composite bridges and facilitates rapid field assembly was developed.To investigate the mechan-ical performance of this joint,a static loading test on a large-scale model was conducted.And a sim-ple V-shaped steel tube joint specimen without perforated clamping plates was tested for comparison. The results indicate that the failure mode of the new PBL-steel tube joint is the direct-shear failure in the joint area of the tube,and the main reason for the failure is the vertical shear in the joint area caused by the axial force difference of the chords.The shear capacity and the deformation capacity of the joint can be improved by the clamping steel plate,but the action shows hysteresis effect. The shear capacity of the PBL-steel tube joint is primarily contributed by the connecting bolts,the PBL shear connectors,and concrete of the chords.The calculation results of the simplified formula of the shear bearing capacity based on the failure mode of the joint is relatively safe,and the for-mula can be used to guide joint design.The new PBL-steel tube joint is reliable and for practical engineering.关键词
钢桁腹/组合结构桥梁/PBL-钢管节点/抗剪承载力Key words
steel truss-webbed/composite bridge/PBL (perfobond leiste )-steel tube joint/shear capacity分类
交通工程引用本文复制引用
端茂军,刘钊,张建东,刘朵..钢桁腹混凝土组合结构桥梁新型 PBL-钢管节点试验研究[J].东南大学学报（自然科学版）,2016,18(3):572-577,6.基金项目
2010年度国家社会科学基金艺术学项目“中国古典艺术理论体系建构研究”（10BA010）；江苏高校哲学社会科学优秀创新团队研究项目“中国特色艺术理论建构与文化创新研究”（2015ZSTD008）阶段性成果。 （）
