- 摘 要
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（陜西省現代建筑設計研究院， 西安 710048）
［摘要］以實際工程為背景，分析了平板式筏基受沖切承載力的計算方法。由于高層建筑的核心筒位置不再單一布置在筏板中間位置，PKPM結構計算軟件的有限元計算結果并不一定完全符合實際情況，應依據核心筒位于筏板的具體位置來制定具體計算方法；基樁對筏板的沖切承載力應考慮抗震墻的豎向壓力對板受沖切承載力的有利影響，不能完全參照有限元計算結果進行設計。設計人員應參照規(guī)范對不同情況進行計算校核，從而使理論計算能夠正確地指導工程設計。
［關鍵詞］平板式筏基； 沖切承載力； 有限元分析； 計算校核
中圖分類號： TU470 文獻標識碼： A文章編號： 1002-848X(2016)S1-0813-04
Analysis on punching shear strength calculation of slab foundation
Cheng Liang
(Shaanxi Modern Architecture Design & Research Institute， Xi′an 710048， China)
Abstract： Taking the actual project as the background, the calculation method of punching shear strength on slab foundation was analyzed. For the reason that the core tube position of high-rise buildings is no longer simplex arranged on the middle position of the raft, the finite element calculation result of software PKPM does not fully conform to the actual situation, the specific calculation should be according to the specific location of the core tube; the beneficial effects of vertical pressure from seismic wall should be considered when calculating the punching shear strength capacity, it cannot be entirely referred to the results of finite element . The results should be calculated and checked by designers referring to the specification in different conditions, which makes the theoretical calculation correctly guide the engineering design.
Keywords： slab foundation; punching shear strength; finite element analysis; checking calculation
作者簡介： 程亮，高級工程師，一級注冊結構工程師，Email: cl_chengliang@sina.com。
