Point of Fixity Analysis of Laterally Loaded Bridge Bents

lateral loads;elastomeric bearing pads;bridges;piles;drilled shafts;static bridge analysis;point of fixity;pile bents

Possiel, Benjamin Allen ; Roy Borden, Committee Member,Mervyn Kowalsky, Committee Chair,Mohammed Gabr, Committee Co-Chair,Possiel, Benjamin Allen ; Roy Borden ; Committee Member ; Mervyn Kowalsky ; Committee Chair ; Mohammed Gabr ; Committee Co-Chair

University:North Carolina State University

关键词: lateral loads;    elastomeric bearing pads;    bridges;    piles;    drilled shafts;    static bridge analysis;    point of fixity;    pile bents;   

Others  :  https://repository.lib.ncsu.edu/bitstream/handle/1840.16/1791/etd.pdf?sequence=1&isAllowed=y

美国|英语

来源: null

【 摘 要 】

Research work in this thesis deals with the effects of lateral loads in the longitudinal direction on a substructure's point of fixity.Full scale tests were performed to model and test a section of a bridge where the superstructure is connected to the substructure through elastomeric bearing pads.The connection rotational stiffness between the super and substructure was measured as an effect of applying a lateral load to the foundation element and creating a moment at the connection joint.A circular concrete pile, square concrete pile, and steel H-pile were tested in connection with both type V and type VI elastomeric bearing pads.The response of these full scale tests were then modeled in FB-MultiPier as tested and as an equivalent single foundation element.The model response was then compared to the measured results.Through the use of FB-MultiPier, three existing North Carolina bridges' foundation elements were analyzed to determine an effective range of partial head fixity and its compounding effects on the development of a foundation element's depth to fixity.