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    李  倩，  姬淑艷，  李英民，  于  靜
    （重慶大學(xué)土木工程學(xué)院，重慶400030）

[摘要] 以兩組（24組、Z3組）尺寸、材料、配筋形式、荷載完全相同的整澆柱與帶縫柱的試驗(yàn)數(shù)據(jù)為基礎(chǔ)，采用基于材料本構(gòu)關(guān)系的纖維模型對(duì)整澆柱及帶縫柱的滯回特性進(jìn)行數(shù)值模擬。在纖維模型中，采用非線性零長(zhǎng)截面單元來(lái)模擬施工縫，同時(shí)考慮縫面處鋼筋的滑移以及剪切恢復(fù)力模型來(lái)模擬帶縫柱的靜力非線性行為。通過模擬結(jié)果與試驗(yàn)數(shù)據(jù)進(jìn)行對(duì)比，驗(yàn)證模型的可行性，提出一種施工縫模型化的方法。
[關(guān)鍵詞] 整澆柱；帶縫柱；纖維模型；零長(zhǎng)截面單元；粘結(jié)滑移；剪切恢復(fù)力模型
中圖分類號(hào)：TU375.3    文獻(xiàn)標(biāo)識(shí)碼：A  文章編號(hào)：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