墻體高厚比及無筋砌體受壓承載力驗算計算書

1、墻體高厚比及無筋砌體受壓承載力驗算計算書項目名稱 日 期 設(shè)計者 校對者一、構(gòu)件編號：GHB-1二、示意圖:三、依據(jù)規(guī)范混凝土結(jié)構(gòu)設(shè)計規(guī)范(GB50010-2010)砌體結(jié)構(gòu)設(shè)計規(guī)范GB 50003-2001四、計算信息幾何參數(shù)相鄰間墻間距s=7500.000 mm墻厚 h=240.000mm墻高 H=11000.000mm門窗洞口寬度bs=3900.000mm橫墻之間s的個數(shù)n=13個壁柱延墻長方向?qū)挾萣1=400.000mm壁柱下面出墻高度h1=700.000mm壁柱上面出墻高度h2=0.000mm材料信息墻體材料:燒結(jié)普通磚砌體強度等級:MU15砂漿強度等級:M5fc = 1.830MP

2、a抗壓強度調(diào)整系數(shù)Y = 1.000荷載信息&軸向壓力設(shè)計值N = 100.000kN彎矩設(shè)計值M = 5.000kNm設(shè)計參數(shù)驗算類型:有門窗洞口帶壁柱整片墻房屋類型:單層房屋，自承重墻靜力計算方案:彈性方案五、受壓承載力驗算計算截面面積bf = min(b1+H*2/3,s - bs) = min(400.000 +10000.000*2/3,7500.000 - 3900.000) = 3600.000mm A = bf*h + b1*(h1 + h2) = 3600.000*240.000 + 400.000*(700.000 + 0.000) = 1144000.000mm計算截面面

3、積的慣性矩y2 = (bf*h*(h1+h/2)+b1*h1*h1/2)/A= (3600.000*240.000*(700.000 + 240.000/2)+400.000*700.000*700.000/2)/1144000.000 = 705mm y1 = h + h1 -y2 = 240.000 + 700.000 - 704.965 = 235.035mmI = bf*h3/12 + bf*h*(y1 - h/2)2 + b1*h13/12 + b1*h1*(y2 - h1/2)2 =3600.000*240.0003/12 + 3600.000*240.000*(235.035 -

4、 240.000/2)2 + 400.000*700.0003/12 + 400.000*700.000*(704.965 - 700.000/2)2 = 62293931934.732mm4計算截面回轉(zhuǎn)半徑i = sqrt(I/A) = sqrt(62293931934.732/1144000.000) = 233.351mm計算間墻高厚比ht = 3.5i =3.5*233.351 = 816.729mmH0 = 1.25H = 13750.000mmP = Y *H0/ht = 1.000*12500.000/816.729 = 15.305計算軸心受壓構(gòu)件穩(wěn)定系數(shù)(P 0 = 1/(1

5、+a *P 2) = 1/(1 + 0.0015*15.3052) = 0.740e = M/|N| = 5000.000/100.000 = 50.000mmP = 15.305 3取中=1/(1+12*(e/h+sqrt(1/ 0 - 1)/12)2 =1/(1+12*(50.000/816.729+sqrt(1/0.740-1)/12)2 = 0.607驗算受壓承載力f = Y a*f0 = 1.000*1.830 = 1.830MPa *f*Aa = 0.607*1.830*1144000.000/1000 = 1270.531kN = |N| = 100.000KN，滿足承載力要求。六、整片墻高厚比驗算H0 = 1.25H = 13750.000mm自承重墻,p 1 = 1.000有門窗洞口，p 2 = max(1- 0.4*(bs/s),0.7) = max(1- 0.4*(3900.000/7500.000),0.7) = 0.792無構(gòu)造柱時：p c = 1砂漿強度等級為M5,根據(jù)砌體結(jié)構(gòu)設(shè)計規(guī)范表6.1.1，墻的容許高厚比p = 24.000P = H0/h