李  倩，  姬淑艳，  李英民，  于  静
    （重庆大学土木工程学院，重庆400030）

[摘要] 以两组（24组、Z3组）尺寸、材料、配筋形式、荷载完全相同的整浇柱与带缝柱的试验数据为基础，采用基于材料本构关系的纤维模型对整浇柱及带缝柱的滞回特性进行数值模拟。在纤维模型中，采用非线性零长截面单元来模拟施工缝，同时考虑缝面处钢筋的滑移以及剪切恢复力模型来模拟带缝柱的静力非线性行为。通过模拟结果与试验数据进行对比，验证模型的可行性，提出一种施工缝模型化的方法。
[关键词] 整浇柱；带缝柱；纤维模型；零长截面单元；粘结滑移；剪切恢复力模型
中图分类号：TU375.3    文献标识码：A  文章编号：1002-848X(2011) S2-0215-05

    Hysteretic behavior of reinforced concrete column with construction joints
    Li Qian, Ji Shuyan, Li Yingmin, Yu Jing
    ( College of Civil Engineering,  Chongqing University,  Chongqing 400030,  China)

Abstract: Based on the experimental data of two pairs of columns with the same size, material,volume of ties and load, and with the only difference that one column has construction joint, and the other has not. Zero-length element was used to simulate the column with joint. The way of simulating construction joints was put forward in two sides, one was considering slip of steel bars, and the other was considering restoring shear model of columns with construction joint. Through the contrast of the experimental result and simulating result, the way of simulating columns with construction joint was validated.
Keywords: intact column; column with construction joint; fiber model; zero-length element; slip of steel bar; restoring shear model