- 摘 要
-
（安徽建筑大學(xué)土木工程學(xué)院， 合肥 230022）
［摘要］針對疊合式雙向樓板拼縫存在使截面剛度減弱尚無彎矩、撓度有效計算方法的實際情況，采用ABAQUS軟件建立疊合式雙向樓板分析模型，根據(jù)彈性理論探討疊合式雙向樓板跨中彎矩、撓度的變化規(guī)律。采用定量計算和定性分析的方法，將四邊簡支的疊合式雙向樓板與現(xiàn)澆雙向樓板的受力情況進(jìn)行對比分析。結(jié)果表明：疊合式雙向樓板長向剛度減弱，長向抗彎能力減小，短向抗彎能力增大；疊合式雙向樓板短向彎矩值增加，長向彎矩值不予折減仍按現(xiàn)澆雙向板彈性理論配筋；彈性理論計算結(jié)果、ABAQUS軟件模擬結(jié)果和試驗測得數(shù)據(jù)吻合較好，可為同類樓板的研究和工程應(yīng)用提供參考。
［關(guān)鍵詞］疊合式雙向樓板； 現(xiàn)澆雙向樓板； 剛度減弱； 有限元分析
中圖分類號：TU375-2文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2016)22-0099-06
Research on internal force and deflection of superimposed two-way floor with stiffness weakened
Zhang Xiang， Shen Xiaopu
（School of Civil Engineering， Anhui University of Architecture, Hefei 230022, China）
Abstract:There is no effective calculation method for bending moment and deflection for superimposed two-way floor because the floor seam weakens the cross-section stiffness. Using ABAQUS software, analysis model of superimposed two-way floor was established and variation rules of mid-span bending moment and deflection of superimposed two-way floor were studied according to the theory of elasticity. By using the method of quantitative calculation and qualitative analysis, mechanical conditions of the superimposed two-way floor with four edges simply supported were compared with that of the cast-in-place two-way floor with four edges simply supported. The results show that the stiffness in long side direction for superimposed two-way floor is reduced and flexural capacity in short side direction decreases; bending moment in short side direction for superimposed two-way floor increases, and bending moment value in long side direction is still reinforced according to cast-in-place two-way floor elasticity theory of instead of value reduction; calculated results according to the elasticity theory, ABAQUS software simulation results and experimental measured data agree well with each other, providing a reference for the research and engineering application of the same floor.
Keywords:superimposed two-way floor; cast-in-place two-way floor; stiffness weakened; finite element analysis
*國家自然科學(xué)基金資助項目（51541806）,安徽省自然科學(xué)基金項目（090414272X)。
作者簡介: 張翔，碩士研究生，Email：zxww660@126.com。
