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    鄒小江¹  壽楠椿²  韓大建¹
    （1 華南理工大學(xué)建筑工程系  廣州 510640；  2 鄭州大學(xué)土木工程學(xué)院  鄭州450002）

[提要]  基于現(xiàn)有的試驗(yàn)技術(shù)條件，高層及大跨度民用建筑的徐變收縮分析還只能參照橋梁結(jié)構(gòu)中比較成熟的徐變系數(shù)方法進(jìn)行。根據(jù)考慮延遲彈性的混凝土線性徐變老化理論，引用橋梁結(jié)構(gòu)中徐變系數(shù)的概念，推導(dǎo)了利用徐變系數(shù)對(duì)高層建筑進(jìn)行考慮施工過程的徐變收縮分析的有限元公式，并編制了相應(yīng)程序，對(duì)框架和框支剪力墻結(jié)構(gòu)分別選取算例進(jìn)行了全過程的彈性和徐變收縮分析。結(jié)果表明工程設(shè)計(jì)人員應(yīng)當(dāng)考慮到施工過程和徐變收縮因素對(duì)高層建筑變形和內(nèi)力的影響。
[關(guān)鍵詞]  高層建筑  混凝土結(jié)構(gòu)  徐變系數(shù)  收縮  施工過程  應(yīng)變?cè)隽?/p>

Based on existing state of experiment, creep and shrinkage analysis for high-rise building and long span structure only referred to the method with creep coefficient in bridge engineering. According to concrete linear creep theory considering elastic hysteresis and the concept of creep coefficient in bridge engineering, the finite element equations for creep and shrinkage analysis for high-rise building considering construction process are deduced with creep coefficient. The corresponding program which can be used to solve the elastic or creep and shrinkage problems considering construction
process is programmed and used for analyzing a frame and a shear wall supported by frame. The result shows that engineer should consider the possibility that construction process and creep and shrinkage affect deformation and internal force of high-rise building.
Keywords:  high-rise building; concrete; creep coefficient; shrinkage; construction process; strain increment