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（1 同濟(jì)大學(xué) 上海 200092；2 北京理正軟件設(shè)計(jì)研究院 100044）
【提要】 上部結(jié)構(gòu)-地基-基礎(chǔ)（樁基）共同工作的實(shí)測結(jié)果均顯示，基礎(chǔ)底板鋼筋的實(shí)測應(yīng)力值與設(shè)計(jì)值（容許應(yīng)力值）存在顯著差異。結(jié)合工程實(shí)例，對(duì)影響基礎(chǔ)底板鋼筋應(yīng)力計(jì)算值偏大的各種因素及影響程度進(jìn)行了分析，指出現(xiàn)有計(jì)算方法的不足并提出了一些改進(jìn)建議。
【關(guān)鍵詞】 基礎(chǔ)底板 鋼筋應(yīng)力 計(jì)算值 設(shè)計(jì)值 共同作用
Analysis on Reasons Effecting Calculated Stress of Steel Bar in Foundation Slab/Zhao Xihong1, Chen Wei2（1 Tongji University, Shanghai 200092, China; 2 Beijing Lizheng Institute of Software Design, Beijing 100044, China）
Abstract:The field experimental results of super structuresoilfoundation show that t
here is a remarkable difference between the experimental stress and design stress (allowable stress) of steel bar in foundation slab. An engineering case is taken as an example to analyze all factors and extents affecting the large calculating stress of steel bar stress in foundation slab in detail. The shortcomings of current calculating methods are pointed out and some suggestions are also presented.
Keywords:foundation slab; steel bar stress; calculating value; design value; interaction