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（浙江省建筑設計研究院， 杭州 310006）
［摘要］混凝土角板兩相鄰邊簡支兩相鄰邊固支，是最常見的樓板類型。工程上根據(jù)跨中彎矩和內支座負彎矩計算受力鋼筋，簡支邊支座配置構造筋?；趶椥员“逍隙壤碚摚蠼饬税鍍葟澗睾团ぞ胤植己蛢烧邤?shù)值關系。分析表明，在簡支邊角部部位，混凝土角板內力分布復雜，角部容易產生裂縫。依照現(xiàn)行做法，在帶有簡支邊的角部配置構造配筋無法滿足受力需要，必須配置受力鋼筋。通過對比與四邊固支、四邊簡支矩形板的內力分布差異,揭示了混凝土角板設計存在的問題，并對其合理設計提出了建議；其結論也可為邊跨板設計提供參考。
［關鍵詞］矩形角板； 兩相鄰邊簡支兩相鄰邊固支； 小撓度理論； 配筋修正
中圖分類號：TU375-2文獻標識碼：A文章編號：1002-848X(2020)13-0013-05
Internal force analysis and reinforcement modification of rectangular corner slab considering torque influence
ZHU Wenwei, YANG Xuelin, YUE Yanling
（Zhejiang Architectural Design and Research Institute， Hangzhou 310006， China）
Abstract:Concrete corner slabs are simply supported on two adjacent sides and fixed on two adjacent sides. This is the most common type of floor slab. In the project, the reinforced steel bars are calculated according to the mid-span bending moment and the negative moment of the inner bearing, and the simply supported side is configured with structural steel bars. Based on the theory of small deformation theory of elastic thin plate, the bending moment and torque distribution in the slab and the numerical relationship between them were solved. The analysis shows that, in the corners of simply supported sides, the internal force distribution of concrete corner plates is complicated, and the corners are prone to cracks. According to the current practice, the configuration of structural steel bars at the corners with simply supported sides can not meet the stress requirements, and force steel bars should be configured. The problems existing in the design of concrete corner slabs were revealed, by comparing the internal force distribution of the slab with the rectangular slabs with four fixed sides and the rectangular slabs with four simply supported sides, and some suggestions were put forward for its reasonable design. The conclusion can also provide a reference for the design of side span slabs.
Keywords:rectangular corner slab; two simply supported adjacent sides and two fixed supported adjacent sides; small deformation theory; reinforcement modification
作者簡介：祝文畏，碩士，高級工程師， 一級注冊結構工程師,Email:wenwei_z@163.com。
