摘要
利用考虑滑移的钢-混凝土组合梁单元,建立了考虑滑移的钢-混凝土组合梁有限单元法.在粘结剪力和滑移微分控制方程的基础上,建立了关于组合梁单元杆端未知力的力法方程.在力法方程的基础上,给出了组合梁单元的刚度矩阵、杆端位移向量及杆端荷载向量并建立了刚度方程.为验证有限单元法的正确性,对试验梁进行了跨中挠度、沿梁高应变分布及梁端滑移的计算分析.计算结果表明,所建立的考虑滑移的钢-混凝土组合梁有限单元法与试验值吻合较好,计算结果可靠.
Based on displacement-based finite element models proposed, a finite element （FE） method of steel and concrete composite beams considering slip between steel girder and concrete plate is presented. A force-method equation about unknown nodal forces of the composite beams is proposed based on the governing differential equation. Based on the force-method equation, the stiffness matrix and fixed-end nodal displacement and force vector are derived. The proposed model is compared with experimental beams in the midspan cross-section deflections, strain distribution and the slip of supporting points. It is shown that the calculation results by the proposed method are in close agreement with the experimental results.
出处
《东南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第2期206-212,共7页
Journal of Southeast University：Natural Science Edition
基金
辽宁省交通厅重点资助项目(0514)
关键词
滑移
钢-混凝土组合梁
有限单元法
刚度矩阵
位移向量
荷载向量
slip
steel-concrete composite beam
FE method
stiffness matrix
nodal displacement vector
nodal force vector
