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{"sheet":"钢筋和混凝土指标","index":0,"n_rows":15,"n_cols":15,"rows_kept":15,"merged":[[0,0,0,3],[0,5,0,14],[1,2,1,3],[7,2,7,3],[9,2,9,3]],"flags":["formulas_cached_only"]}
["钢筋和混凝土指标",{"$nulls":4},"混凝土强度及弹性模量"]
["C",25,"C?(20,25,30,35,40,45,50,55) 混凝土等级",null,null,"强度","类型","C20","C25","C30","C35","C40","C45","C50","C55"]
["fck＝",16.7,"(N/mm2)","混凝土抗压强度标准值 fck",null,"fck","N/mm2",13.4,16.7,20.1,23.4,26.8,29.6,32.4,35.5]
["ftk＝",1.78,"(N/mm2)","混凝土抗拉强度标准值 ftk",null,"ftk","N/mm2",1.54,1.78,2.01,2.2,2.39,2.51,2.64,2.74]
["fc＝",11.9,"(N/mm2)","混凝土抗压强度设计值 fck",null,"fc","N/mm2",9.6,11.9,14.3,16.7,19.1,21.1,23.1,25.3]
["ft＝",1.27,"(N/mm2)","混凝土抗拉强度设计值 ft",null,"ft","N/mm2",1.1,1.27,1.43,1.57,1.71,1.8,1.89,1.96]
["Ec＝",28000,"(N/mm2)","混凝土弹性模量 Ec",null,"Ec","N/mm2",25500,28000,30000,31500,32500,33500,34500,35500]
["HPB",235,"HPB(235,335,400) 箍筋强度等级",null,null,"强度","类型","HPB235","HRB335","HRB400"]
["fyv＝",210,"(N/mm2)","箍筋抗拉压强度设计值 fyv",null,"fyv","N/mm2",210,300,360]
["HRB",335,"HRB(235,335,400) 纵筋强度等级",null,null,"强度","类型","HPB235","HRB335","HRB400"]
["fy＝",300,"(N/mm2)","纵筋抗拉压强度设计值 fy",null,"fy","N/mm2",210,300,360]
["Es＝",200000,"(N/mm2)",null,null,"Es","N/mm2",210000,200000,200000]
["β1＝",{"v":0.8,"d":"0.80"},null,"0.8<C50<内插<C80<0.74",null,"直径",null,"8~20","6~50","6~50"]
["ξb＝",0.55,null,"ξb＝β1/(1+fy/0.0033Es)"]
["αE＝",{"v":7.142857142857143,"d":"7.14"},null,"αE＝Es/Ec"]

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["双向板楼盖梁板尺寸"]
["长边梁"]
["bx＝",300,"(mm)","长边梁宽度 bx"]
["hx＝",600,"(mm)","长边梁高度 hx"]
["lcx＝",{"v":3.9,"d":"3.900"},"(m)","长边梁支座间距 lcx"]
["cx＝",35,"(mm)","长边梁保护层厚度 cx"]
["h0x＝",565,"(mm)","长边梁有效高度 h0x"]
["lnx＝",{"v":3.6,"d":"3.600"},"(m)","长边梁净跨 lnx=lcx-by"]
["lx＝",{"v":3.9,"d":"3.900"},"(m)","长边梁计算跨度 lx＝lcx"]
["短边梁"]
["by＝",300,"(mm)","短边梁宽度 by"]
["hy＝",1000,"(mm)","短边梁高度 hy"]
["lcy＝",{"v":3,"d":"3.000"},"(m)","短边梁支座间距 lcy"]
["cy＝",35,"(mm)","短边梁保护层厚度 cy"]
["h0y＝",965,"(mm)","短边梁有效高度 h0y"]
["lny＝",{"v":2.7,"d":"2.700"},"(m)","短边梁净跨 lny=lcy-by"]
["ly＝",{"v":3,"d":"3.000"},"(m)","短边梁计算跨度 ly=lcy"]
["板"]
["b＝",1000,"(mm)","板宽 b 取1m宽板带"]
["h＝",250,"(mm)","板厚 h"]
["c0＝",20,"(mm)","板保护层厚度 c0"]
["h0＝",230,"(mm)","板有效高度 h0"]
["l0x＝",{"v":3.6,"d":"3.600"},"(m)","计算跨度 l0x＝ln"]
["l0y＝",{"v":2.7,"d":"2.700"},"(m)","计算跨度 l0y＝lny"]
["α＝",{"v":1.7777777777777777,"d":"1.78"},null,"α＝(l0x/l0y)^2"]
["β＝",{"v":2,"d":"2.00"},null,"β＝2.0"]

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