建筑結(jié)構(gòu)設(shè)計(jì)中的風(fēng)荷載計(jì)算案例綜述1.1風(fēng)荷載標(biāo)準(zhǔn)值計(jì)算wk式中，wk—風(fēng)荷載標(biāo)準(zhǔn)值（kN/m2）w0—基本風(fēng)壓（kN/m2），濰坊壽光基本風(fēng)壓為0.40kN/m2βz—高度z處的風(fēng)振系數(shù)，當(dāng)房屋高度小于30m時(shí)取1.0μs—風(fēng)荷載體形系數(shù)，取1.4μz—風(fēng)壓高度變化系數(shù)，地面粗糙程度為C類表2-7風(fēng)荷載標(biāo)準(zhǔn)值計(jì)算表層次βzμsZ(m)μzw0A（m2）wkP（kN）61.01.423.850.840.4026.910.7412.648519.950.8430.4200.7414.297416.050.8430.4200.7414.297312.150.7430.4200.41412.59428.250.7430.4200.41412.59414.350.7432.1750.41413.320集中風(fēng)荷載P=wA—一榀框架各層節(jié)點(diǎn)的受風(fēng)面積Z—框架節(jié)點(diǎn)至室外地面的高度A=?hi—下層柱高h(yuǎn)j—上層柱高，對(duì)于頂層為女兒墻高度的2倍B—計(jì)算單元迎風(fēng)面寬度A1=（4.35+3.9）/2×7.8=32.175m2A2=A3=A4=A5=（3.9+3.9）/2×7.8=30.420m2A6=（3.9+1.5×2）/2×7.8=26.91m2Wk1=Wk2=Wk3=1.0×1.4×0.74×0.4=0.414Wk4=Wk5=Wk6=1.0×1.4×0.84×0.4=0.470P1=0.414×32.175=13.320kNP2=0.414×30.42=12.594kNP3=0.414×30.42=12.594kNP4=0.470×30.42=14.297kNP5=0.470×30.42=14.297kNP6=0.470×25.35=12.648kN剪力：V6=F6=12.648kNV5=F6+F5=26.945kNV4=F6+F5+F4=41.242kNV3=F6+F5+F4+F3=53.836kNV2=F6+F5+F4+F3+F2=66.43kNV1=F6+F5+F4+F3+F2+F1=79.75kN反彎點(diǎn)高度比計(jì)算：y=y0+y1+y2+y3表2-8風(fēng)荷載作用下反彎點(diǎn)高度比層次B柱C柱D柱E柱6y0=0.354y0=0.45y0=0.45y0=0.354y1=y2=y3=0y1=y2=y3=0y1=y2=y3=0y1=y2=y3=0y=0.354y=0.45y=0.45y=0.3545y0=0.404y0=0.49y0=0.49y0=0.404y1=y2=y3=0y1=y2=y3=0y1=y2=y3=0y1=y2=y3=0y=0.404y=0.49y=0.49y=0.4044y0=0.45y0=0.50y0=0.50y0=0.45y1=y2=y3=0y1=y2=y3=0y1=y2=y3=0y1=y2=y3=0y=0.45y=0.50y=0.50y=0.453y0=0.454y0=0.50y0=0.50y0=0.454y1=y2=y3=0y1=y2=y3=0y1=y2=y3=0y1=y2=y3=0y=0.454y=0.50y=0.50y=0.4542y0=0.50y0=0.50y0=0.50y0=0.50y1=y2=y3=0y1=y2=y3=0y1=y2=y3=0y1=y2=y3=0y=0.50y=0.50y=0.50y=0.501y0=0.593y0=0.55y0=0.55y0=0.593y1=y2=y3=0y1=y2=y3=0y1=y2=y3=0y1=y2=y3=0y=0.593y=0.55y=0.55y=0.593圖2-6風(fēng)荷載作用下結(jié)構(gòu)計(jì)算簡(jiǎn)圖1.2風(fēng)荷載作用下的位移驗(yàn)算水平荷載作用下框架的層間位移計(jì)算：ΔUVj—第j層的總剪力?uj—第j層層間位移∑Dij—第j層所有柱抗側(cè)移剛度之和風(fēng)荷載作用下框架樓層層間位移與層高之比的計(jì)算見(jiàn)下表：表2-9風(fēng)荷載作用下框架樓層層間位移與層高之比的計(jì)算層次Vj∑D?uj（m）hi△Vj/h612.648127434.30.00013240.0000307526.945131589.1780.0002393.900.0000635441.242131589.1780.0003673.900.0000942353.836131589.1780.0004943.900.000125266.43131589.1780.0006203.900.0001