摘要
本文讨论带有键槽的施工缝时大体积混凝土结构的应力分析方法.文中导出了能够反映键槽传剪性能的键楷模型本构方程式.采用空间接触面单元(节理单元)模拟结构的施工缝,并研制了可以提高计算过程收敛性和稳定性的新的迭代方案——变增量搜索法.实例计算表明,本文建议的计算方法对分缝大体积混凝土结构的应力、变形和整体性分析是十分有效的.
In this paper, the stress analysis method of massive concrete structure in consideration of construction joints with key grooves is discussed.A set of constitutive equations of shear transfer by key grooves is derived, in which the shear transfer ability of key grooves has been reflected.The three dimensional joint elements are adopted to simulate the construction joint of structure, anda new iteration scheme--variable increment search method is advanced toimprove the convergence and stability of computation process.A practical example shows that the suggested method is quite effective for the analysis of stress,deformation and integrity of massive concrete structures with construction joints.
出处
《土木工程学报》
EI
CSCD
北大核心
1994年第4期63-69,共7页
China Civil Engineering Journal
