35×34.21+1.4×0.7×2]=0.9max[43.852,48.144]=0.9×48.144=43.329kN/m2Р 正常使用极限状态设计值S正=G4k=34.21 kN/m2Р 3、面板布置Р小梁布置方式Р竖直Р左部模板悬臂长(mm)Р125Р小梁间距(mm)Р200Р小梁一端悬臂长(mm)Р250Р主梁间距(mm)Р450Р主梁一端悬臂长(mm)Р150Р对拉螺栓横向间距(mm)Р600Р对拉螺栓竖向间距(mm)Р450Р模板设计立面图Р 4、面板验算Р面板类型Р覆面木胶合板Р面板厚度(mm)Р15Р面板抗弯强度设计值[f](N/mm2)Р15Р面板弹性模量E(N/mm2)Р10000Р 墙截面宽度可取任意宽度,为便于验算主梁,取b=0.475m,W=bh2/6=475×152/6=17812.5mm3,I=bh3/12=475×153/12=133593.75mm4Р 4.1、强度验算Р q=bS承=0.475×43.329=20.581kN/mР 面板弯矩图(kN·m)Р Mmax=0.103kN·mР σ=Mmax/W=0.103×106/17812.5=5.777N/mm2≤[f]=15N/mm2Р 满足要求!Р 4.2、挠度验算Р q=bS正=0.475×34.21=16.25kN/mР 面板变形图(mm)Р ν=0.252mm≤[ν]=l/400=200/400=0.5mmР 满足要求!Р 5、小梁验算Р小梁类型Р钢管Р小梁材料规格(mm)РФ48×3Р小梁抗弯强度设计值[f](N/mm2)Р205Р小梁弹性模量E(N/mm2)Р206000Р小梁截面抵抗矩W(cm3)Р4.49Р小梁截面惯性矩I(cm4)Р10.78Р 5.1、强度验算Р q=bS承=0.225×43.329=9.749kN/mР 小梁弯矩图(kN·m)Р 小梁剪力图(kN)
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