混凝土计算题和答案解析

.第3章l0Hm，ff2'cyN/mm2l，精品文档放心下载0ff2c'N/y2l04.2m，4f'N/y2f2c精品文档放心下载第4章fc，2ft1.27N/2,，fy300N/mm22．已知梁的截面尺寸为b××，混凝土强度等级为，精品文档放心下载ft1.27N/2,fc11.9N/24的钢精品文档放心下载筋，即Ⅱ级钢筋，fy30N/mm，A2；混凝土强度等级为，2sft1.71N/2,fc19.1N/24．已知梁的截面尺寸为b××，混凝土强度等级为，精品文档放心下载ft1.71N/2,fc19.1N/2fy300N/mm，2φA,求感谢阅读’2sAs，fc14.3N/2，fy300N/mmφA2sφ6A=感谢阅读’2sT，精品文档放心下载fc14.3N/2，纵向钢筋采用级钢筋，..f2精品文档放心下载360N/mmyAa精品文档放心下载Ss．T精品文档放心下载，fc14.3N/，2fy360N/mm，a2s谢谢阅读8ftd1.23N/,f11.5N/，22cd，fsdN/M2d第5章1×感谢阅读fff感谢阅读222tcyv感谢阅读谢谢阅读fff感谢阅读222tcyv感谢阅读为fff精品文档放心下载222tcyv2和2的f精品文档放心下载y第7章1bh300mm400mm,谢谢阅读l03.0m,asa'35fcs=用ff,N=M=感谢阅读’2yybhmmmmasa's35，..fc级，ff’yyA'sAs,le谢谢阅读200a=af，感谢阅读’2sscffm，精品文档放心下载’2yy第8章lq精品文档放心下载0kψ精品文档放心下载q4l精品文档放心下载0感谢阅读4N。谢谢阅读kwlim0.2谢谢阅读为4M•精品文档放心下载k谢谢阅读第3章．l0Hm，ff2'cyN/mm2感谢阅读由l0/b3600/40090.99A'sA's1N12650103(f)(14.3400400)1906mm23600.90.99f0.9c'yA'1.2%'s'A0.6%的选，A'1964mm2s3.0%，精品文档放心下载..lff20c'N/y2]感谢阅读l0.8250bA'sA''s1N12100000(f)(14.3400400)1801mm2'3000.90.825fcyA'1.1%''sA0.6%选6，A'1884mm2s188418014.6%精品文档放心下载1801l04.2m，4f'N/y2f2c感谢阅读）求l4200则0b30014.0，由表得0.92NuNu0.9(fcAf)0.9300300300804)ys1265kN900kN满足要求）第4章fc，ft1.27N/2,，fy300N/mm2h050035465mm1ffcyAs及M1fbx(hc0x/2)得As..6x精品文档放心下载A2sx=186mm<bh0As1475.60.2%min23A2s2．已知梁的截面尺寸为b××，混凝土强度等级为，精品文档放心下载ft1.27N/2,fc11.9N/2级fy300N/mm2级fy360N/mm.2sMfbh2c01251061.011.9200465211s112s1-2s)12AsM/fysh06104420.858418,As2As0.2%min2）As/。24的钢谢谢阅读筋，即Ⅱ级钢筋，fy30N/mm，A2；混凝土强度等级为，2sft1.71N/2,fc19.1N/2解：f，f，f精品文档放心下载222ctyh谢谢阅读0..As0.26%293min2则f1yfc0.00773001.019.10.121b0.55，满足适用条件。10.51.019.125041520.12110.5Mfbh感谢阅读2u1c093.49KNmM89KN，安全。感谢阅读4．已知梁的截面尺寸为b××，混凝土强度等级为，谢谢阅读ft1.71N/2,fc19.1N/2fy300N/mm，2φA谢谢阅读,求’2sAs'941M'fa6m谢谢阅读Ah''ys0则MMM33010114.310215.710m精品文档放心下载'6661Ah。精品文档放心下载0s1M'fbh2c0215.71060.2921.019.1200440211112感谢阅读sb11112ss谢谢阅读A1M'215.710619862fh3000.823440ys0AsAs1As22927.02φA2s，fc14.3N/2，fy300N/mmφA2sφ6A=感谢阅读’2sfff。感谢阅读2’2cyy由表知，混凝土保护层最小厚度为，故a247.5，h0由式1fbxfcyA''sfyA，得s..fAf'A'3001473300402xmmhysysfb1.014.3200b01c0.55352.5194mm2a'24080mm谢谢阅读Mu1fbxhc0xf2yA''sha'01.014.3112.3352.5352.540感谢阅读112.3

2132.876N6N谢谢阅读精品文档放心下载xT，fc14.3N/2fy360N/mm2Aa谢谢阅读Ssfc14.3N/；f2y360N/mma；21b0.518。Ta1fbcfhf(h0hf2)1.014.3(6402)597.17106Nmm597.17kNmM700kNm感谢阅读TA。SasMa1fcb'fa1b)h'ffbh2c0(h0h'f)24=7001061.014.3(600300)120(6401.014.330064021202)112as112bASa1fbhc0a1ffcyb'fb)h'f..1.014.31.014.3(600300)3428mm2ФФA）谢谢阅读S．T精品文档放心下载，fc14.3N/2fy360N/mm2，as由表查得，fc14.3N/；f2yN/2；a1；b0.518A。Sh0has70070630mmT5a1fb'cfh'f1.014.3600100858000NfyASNNTM。uxfyASafb'1cfafb1cb)h'f1.014.3(600250)1.014.3xhb00.518630326.34mmMua1fbx(hc0hx')ab)h')fb'(hf221cff01.014.3156.56(630156.56)1.014.3(600250)(630)22599.09106Nmmm感谢阅读..Mmu感谢阅读度等级为，ftd1.23N/,f11.5N/，钢筋采用，22cdfsdN/2Mdr01.0,fcd11.5N/2,ftd1.23N/2,fsdN/2,0.56bfftdsd1.23380.167取0.167%a，hs0。rM0dfbx(h0x)2x611.5x(435)谢谢阅读2x或648.9mm取x221.1mmhb00.56435243.6mmASfbxfAffsd11.5200221.12фAф感谢阅读2S实cmm。S23(202)423nAs02.2%2000.167%第5章1×谢谢阅读..fff精品文档放心下载222tcyvhwh0465mm,h4651.864wb250fβ谢谢阅读22cukc0.25cfbhc00.2519.6250465279000NV180000N0.7fbht00.71.125046589512.5NV(180000N),故需要进行配V0.7fbht01.25fyvnA1hs0则nA1mm2/mms250.3nA0.838可以）1s120sv250.3nA0.335%1bs250120svmin0.24ftfyv1.10.240.126%210sv可以)2×谢谢阅读fff感谢阅读222tcyv精品文档放心下载为fff谢谢阅读222tcyv2和2的f谢谢阅读2y..V11(5.40.24)154.8220hwh0465mm,h4651.864wb250fβ感谢阅读22cukc0.25cfbhc00.2519.6250465279000NV0.7fbht00.71.125046589512.5NV,21以感谢阅读Vsb0.8Asbfsinys20.8380.1360N谢谢阅读2VVV15480077406.177393.9NVcs0.7fbht01.25fyvnA1hs0250.3

89512.51.25210465

200精品文档放心下载150910.0N77393.9N)谢谢阅读V2.580.48150910.0N第7章..1bh300mm400mm,谢谢阅读l03.0m,asa'35fcs=用ff,N=M=谢谢阅读’2yyeee0M235.26N3ea20mmeie0ea58820608mm10.5fA0.516.73004002.5051.0cN4001031.01l0h30004001521l210eih121400h01114006083657.521.01.0241.024eeih2as787.7ei1.024608622.6mm0.3h00.3365109.5mm和AA'ssN1fbhc0..AsAs'N400103700.2190.192fbh1.016.73003653651c0Ne10.5fbh2''1c0fhay0s400103787.71.016.73003652(0.2190.50.219)3602037mm2bh0.002300400240mm2'minAsA's2bhmmmmasa's35，fc级，ff’yyA'sAsle。感谢阅读200eeie0h20取ea20mmeie0ea10020120mm1.0取1l0h360040091521.01l210eih121400h0111400120365921.01.01.1761.01.176eeih2as1.1762306.12..0.5b(hfhhAA))ff)(h2aM''e1cb0b0ysyssbbf'fNfh'AAobb1cb0ysys0.51.011.92000.550365(4000.5500.5(300226300226)(4002感谢阅读1.011.920