商業(yè)辦公樓建筑設(shè)計(jì)、結(jié)構(gòu)設(shè)計(jì)畢業(yè)設(shè)計(jì)計(jì)算書(shū)
商業(yè)辦公樓建筑設(shè)計(jì)、結(jié)構(gòu)設(shè)計(jì) 摘要:本畢業(yè)設(shè)計(jì)由胡尚瑜老師作為指導(dǎo)老師,指導(dǎo)學(xué)生梁睿完成此次畢業(yè)設(shè)計(jì)。該設(shè)計(jì)是一棟鋼筋混凝土框架結(jié)構(gòu)的綜合辦公樓,建筑高度21.8m(從地面標(biāo)高到主體結(jié)構(gòu)檐口高度),建筑面積約5000m2,設(shè)計(jì)使用年限50年,丙類建筑,主體部分采用六層框架結(jié)構(gòu)。遵循先建筑、后結(jié)構(gòu)、再基礎(chǔ)的設(shè)計(jì)過(guò)程,根據(jù)任務(wù)書(shū)和指導(dǎo)書(shū)的要求完成的建筑、結(jié)構(gòu)設(shè)計(jì)。建筑圖包括平面圖、正立面、側(cè)立面及各詳圖。結(jié)構(gòu)設(shè)計(jì)時(shí)緊密結(jié)合建筑設(shè)計(jì),力求經(jīng)濟(jì)合理,造型美觀。結(jié)構(gòu)分析的重點(diǎn)在于框架內(nèi)力及構(gòu)件承載力滿足要求??紤]畢業(yè)設(shè)計(jì)的特殊要求,以手算為主、電算為輔。計(jì)算書(shū)包括計(jì)算說(shuō)明、結(jié)構(gòu)計(jì)算書(shū)(包括樓板計(jì)算、連續(xù)次梁計(jì)算、框架計(jì)算、基礎(chǔ)和樓梯計(jì)算)。關(guān)鍵詞:多層建筑;框架結(jié)構(gòu);商業(yè)辦公樓。Commercial office building design, structural designStudent: Rui Liang Instructor: Hu ShangyuAbstract:The graduation Designed by Hu Shangyu teacher as instructor, students Liang Rui complete the graduation projectThe design is a reinforced concrete frame structure office building,building height 21.8m ( from ground level to the main structure of the eaves height ),Construction area of about 5000 m2,design life of 50 years,building class C ,Main part of the structure is six-story frame。First building , post-structuralism , and then based design process , according to the mission statement and instructions to complete the requirements of the building, structure design . Building plans including floor plans , facade , side elevation and the detail . Closely integrated structural design architectural design , and strive to economic rationality and beautiful shape. Framework for structural analysis focuses on internal force and component capacity to meet the requirements . Consider the special requirements of graduation to hand calculations based , electronic data supplement. Calculations including calculations show that structural calculations ( including slab calculations, continuous secondary beam calculation , calculation framework , infrastructure and stairs calculation ) .Keywords:Multi-story building ; framework ; commercial office building. 第一章 結(jié)構(gòu)計(jì)算總說(shuō)明4第二章 結(jié)構(gòu)計(jì)算書(shū)52.1樓蓋結(jié)構(gòu)計(jì)算52.1.1雙向板計(jì)算62.1.2連續(xù)梁計(jì)算172.2框架結(jié)構(gòu)計(jì)算212.2.1框架荷載計(jì)算212.2.2框架梁柱相對(duì)線剛度計(jì)算222.2.3風(fēng)荷載作用下框架內(nèi)力計(jì)算222.2.4地震荷載作用下框架內(nèi)力計(jì)算252.2.5水平荷載作用下框架的抗側(cè)移驗(yàn)算252.2.6豎向荷載作用下框架內(nèi)力計(jì)算302.2.7橫向框架內(nèi)力組合372.2.8框架結(jié)構(gòu)截面設(shè)計(jì)382.3基礎(chǔ)設(shè)計(jì)及計(jì)算632.3.1基礎(chǔ)底面積和底面積尺寸確定632.3.2基礎(chǔ)抗沖切承載力計(jì)算652.3.3基礎(chǔ)底板配筋652.4樓梯設(shè)計(jì)及計(jì)算672.4.1樓梯布置672.4.2內(nèi)力及配筋計(jì)算:68鳴謝72第一章 結(jié)構(gòu)計(jì)算書(shū)總說(shuō)明本畢業(yè)設(shè)計(jì)結(jié)構(gòu)計(jì)算書(shū)主要內(nèi)容有:一、樓蓋結(jié)構(gòu)計(jì)算本設(shè)計(jì)采用了彈性理論方法和塑性內(nèi)力重分布方法兩種計(jì)算方法對(duì)樓蓋的梁板結(jié)構(gòu)進(jìn)行了結(jié)構(gòu)分析和計(jì)算,并根據(jù)計(jì)算結(jié)果進(jìn)行配筋構(gòu)造設(shè)計(jì)。二、 框架結(jié)構(gòu)計(jì)算 本設(shè)計(jì)采用人工計(jì)算的方法對(duì)所選取的一榀框架進(jìn)行了結(jié)構(gòu)計(jì)算,主要進(jìn)行了框架荷載計(jì)算、框架內(nèi)力計(jì)算、框架荷載效應(yīng)組合和框架截面設(shè)計(jì)等。三、基礎(chǔ)結(jié)構(gòu)計(jì)算 本設(shè)計(jì)基礎(chǔ)選用柱下獨(dú)立基礎(chǔ),主要對(duì)框架結(jié)構(gòu)計(jì)算中所選取的一榀框架的柱下獨(dú)立基礎(chǔ)進(jìn)行了結(jié)構(gòu)計(jì)算和設(shè)計(jì)。注:本結(jié)構(gòu)計(jì)算和設(shè)計(jì)除某些方面具體注明外,其余均按新規(guī)范要求進(jìn)行計(jì)算和設(shè)計(jì)。第二章 結(jié)構(gòu)計(jì)算書(shū)2.1、樓蓋結(jié)構(gòu)計(jì)算設(shè)計(jì)資料 本辦公樓樓蓋結(jié)構(gòu)采用現(xiàn)澆鋼筋混凝土樓蓋,樓面面層為花崗巖樓面,輕鋼龍骨吊頂,衛(wèi)生間的設(shè)計(jì)為坐式。樓板為100mm厚(走廊為80mm厚)鋼筋混凝土樓板,板采用C20混凝土,其他采用C30混凝土,HPB235級(jí)鋼筋,梁中縱向受力鋼筋采用HRB335級(jí)鋼筋,箍筋采用HPB235級(jí)鋼筋。此建筑樓板、走廊的活荷載標(biāo)準(zhǔn)值取2.5kN/m2(荷載分項(xiàng)系數(shù)為1.4),樓梯的活荷載標(biāo)準(zhǔn)值取3.5kN/m2(荷載分項(xiàng)系數(shù)為1.4),其余房間的活荷載標(biāo)準(zhǔn)值取2.0kN/m2(荷載分項(xiàng)系數(shù)為1.4)結(jié)構(gòu)布置選擇第三層結(jié)構(gòu)平面進(jìn)行設(shè)計(jì),樓面板的布置如下圖(圖中尺寸單位為mm):(1)樓板(100mm厚)樓面鋪20mm厚水磨石地板 0.65KN/0.02m=0.013 KN/100mm厚鋼筋混凝土樓板 25KN/0.10m=2.5 KN/ 輕鋼龍骨吊頂 0.2 KN/小計(jì) =2.713 KN/恒載標(biāo)準(zhǔn)值: =2.713 KN/恒載設(shè)計(jì)值: g=1.23.713=3.256 KN/活載標(biāo)準(zhǔn)值: =2.5 KN/活載設(shè)計(jì)值: q=1.42.5=3.5 KN/荷載設(shè)計(jì)值: p=g+q=3.256+3.5=6.756 KN/(2)走廊(80mm厚)樓面鋪20mm厚水磨石地板 0.65KN/0.02m=0.013 KN/80mm厚鋼筋混凝土樓板 25KN/0.08m=2.0 KN/ 輕鋼龍骨吊頂 0.2 KN/小計(jì) =2.21 KN/恒載標(biāo)準(zhǔn)值: =2.21 KN/恒載設(shè)計(jì)值: g=1.22.21=2.652 KN/活載標(biāo)準(zhǔn)值: =2.5 KN/活載設(shè)計(jì)值: q=1.42.5=3.5 KN/荷載設(shè)計(jì)值: p=g+q=2.21+3.5=5.71 KN/2.1.1、雙向板計(jì)算(1)按彈性理論設(shè)計(jì), 對(duì)不同類型的板區(qū)格進(jìn)行編號(hào)分類(見(jiàn)板布置圖),在本設(shè)計(jì)中樓蓋邊梁對(duì)板的作用視為鉸支座,內(nèi)支座視為固定。將多區(qū)格雙向板簡(jiǎn)化為單區(qū)格的雙向板計(jì)算.1)、荷載計(jì)算樓面板荷載:100mm厚鋼筋混凝土樓板:g=1.23.713=3.256 KN/q=1.42.5=3.5 KN/g+q/2=3.256+3.5/2=5.006 KN/q/2=1.75 KN/g+q=3.256+3.5=6.756 KN/走廊樓面板荷載:80mm厚鋼筋混凝土樓板:g=1.22.21=2.652 KN/q=1.42.5=3.5 KN/g+q/2=2.652+3.5/2=4.402 KN/q/2=1.75 KN/g+q=2.652+3.5=6.152 KN/2)、計(jì)算跨度,為計(jì)算方便,取板的支承中心線間的距離作為計(jì)算長(zhǎng)度,結(jié)果總是偏安全.即=.3)、荷載布置方式:求某板跨中最大彎距時(shí),采用棋盤(pán)式布置活荷載;求支座最大彎距時(shí),采取活荷載滿布方式.4)、內(nèi)力計(jì)算跨中最大彎距為在g+q作用下的彎距值與q/2作用下的跨中彎距之和.根據(jù)劃分板的形式查課本<<混凝土結(jié)構(gòu)設(shè)計(jì)>>的附表8進(jìn)行雙向板計(jì)算,考慮雙向彎曲對(duì)兩個(gè)方向板帶彎距值的影響采用以下式子計(jì)算=+,=+混凝土的泊松比=0.2,板的計(jì)算中為短邊或簡(jiǎn)支邊方向, 為長(zhǎng)邊方向.下面以B1板為例進(jìn)行彎矩計(jì)算, 板的計(jì)算示意圖如圖所示:彎距計(jì)算:=3300mm,=7200mm,/=3300mm/7200mm=0.46,查表的: =0時(shí) =(0.05595.006+0.09651.75) KN/ =4.886 KN.m/m=(0.00795.006+0.01741.75) KN/ =0.762 KN.m/m=0.2時(shí) =4.886 KN.m/m+0.20.762 KN.m/m=5.038 KN.m/m=0.762 KN.m/m+0.24.886 KN.m/m=1.739 KN.m/m支座: =0.11796.756 KN.m/m=8.674 KN.m/m=0.07866.756 KN.m/m=5.783 KN.m/m5)、配筋計(jì)算:板跨內(nèi)及支座取截面有效高度=80mm, =70mm,即可近似按計(jì)算鋼筋截面面積.平行于方向的跨中彎矩=5.038 KNmas 20mm =5.038/0.95210(100-20)=315.66 實(shí)配鋼筋: 8150 (As 335)平行于 方向的跨中彎矩=1.739 KN.m/mas 30mm =1.739/0.95210(100-30)=124.53 實(shí)配鋼筋: 8200 (As 251) 沿 方向的支座彎矩=8.674 KN.m/mas 20mm =8.674/0.95210(100-20)=543.48 實(shí)配鋼筋: 10140 (As 561) 沿 方向的支座彎矩=5.783 KN.m/mas 30mm =5.783/0.95210(100-30)=414.1 實(shí)配鋼筋: 10180 (As 436)各區(qū)格板分別計(jì)算的彎距值如下表1:表1區(qū)格B1B2/3.3m/7.2m=0.53.3m/7.2=0.5跨中計(jì)算簡(jiǎn)圖=(0.05595.006+0.09651.75) KN/ =4.886 KN.m/m(0.04085.006+0.09651.75)KN/=4.063KN.m/m=(0.00795.006+0.01741.75) KN/ =0.762 KN.m/m(0.00285.006+0.01741.75)KN/=0.484 KN.m/m=4.886 KN.m/m+0.20.762 KN.m/m=5.038 KN.m/m4.063KN.m/m+0.20.484 KN.m/m=4.160KN.m/m=0.762 KN.m/m+0.24.886 KN.m/m=1.739 KN.m/m0.484KN.m/m+0.24.063 KN.m/m=1.297KN.m/m支座計(jì)算簡(jiǎn)圖=0.11796.756 KN.m/m=8.674 KN.m/m0.08366.756 KN.m/m=6.151 KN.m/m=0.07866.756 KN.m/m=5.783 KN.m/m0.05696.756 KN.m/m=4.186 KN.m/m區(qū)格B3B4/3m/7.2m=0.4(取0.5)3.3m/4.2m=0.79跨中計(jì)算簡(jiǎn)圖(0.04084.402+0.09651.75) KN/=3.113 KN.m/m(0.03145.006+0.05731.75)KN/=2.804KN.m/m(0.00284.402+0.01741.75)KN/=0.385 KN.m/m(0.01215.006+0.03201.75)KN/=1.269 KN.m/m3.113KN.m/m+0.20.385 KN.m/m=3.19 KN.m/m2.804KN.m/m+0.21.269 KN.m/m=3.059 KN.m/m0.385KN.m/m+0.23.113 KN.m/m=1.008 KN.m/m1.269KN.m/m+0.22.804 KN.m/m=1.830KN.m/m支座計(jì)算簡(jiǎn)圖0.08366.152 KN.m/m=4.629 KN.m/m0.07286.756 KN.m/m=5.356 KN.m/m0.05696.152 KN.m/m=3.15 KN.m/m0.0576.756 KN.m/m=4.194KN.m/m區(qū)格B5B6/3.3m/4.2m=0.793m/4.2m=0.71 跨中計(jì)算簡(jiǎn)圖(0.02765.006+0.05691.75) KN/=2.589 KN.m/m(0.03114.402+0.0671.75)KN/=2.287 KN.m/m(0.01415.006+0.03311.75) KN/=1.399 KN.m/m(0.01174.402+0.02981.75)KN/=0.933 KN.m/m2.589KN.m/m+0.21.399 KN.m/m=2.801 KN.m/m2.287KN.m/m+0.20.933 KN.m/m=2.474 KN.m/m1.399KN.m/m+0.22.589 KN.m/m=1.917 KN.m/m0.933KN.m/m+0.22.287 KN.m/m=1.390KN.m/m支座計(jì)算簡(jiǎn)圖0.06996.756 KN.m/m=5.143 KN.m/m0.07286.152 KN.m/m=3.549KN.m/m0.05686.756 KN.m/m=4.179 KN.m/m0.05686.152 KN.m/m=3.145 KN.m/m區(qū)格B7B8/33m/7.2m=0.46(取0.5)3m/7.2m=0.42 (取0.5)跨中計(jì)算簡(jiǎn)圖(0.0405.006+0.09651.75) KN/=4.020 KN.m/m(0.044.402+0.09651.75)KN/=3.105KN.m/m(0.00385.006+0.01741.75) KN/=0.539 KN.m/m(0.00384.402+0.01741.75)KN/=0.425 KN.m/m4.020KN.m/m+0.20.539 KN.m/m=4.129 KN.m/m3.105KN.m/m+0.20.425 KN.m/m=3.19KN.m/m0.539KN.m/m+0.24.020KN.m/m=1.343 KN.m/m0.425KN.m/m+0.23.105 KN.m/m=1.046KN.m/m支座計(jì)算簡(jiǎn)圖0.08296.152 KN.m/m=5.554 KN.m/m0.07256.152 KN.m/m=4.254 KN.m/m0.0576.152 KN.m/m=3.818 KN.m/m0.05706.152 KN.m/m=3.156 KN.m/m區(qū)格B9B10/33m/6m=0.5533m/6m=0.55 (取0.5)跨中計(jì)算簡(jiǎn)圖(0.03985.006+0.08921.75) KN/=3.870 KN.m/m(0.03855.006+0.08921.75)KN/=3.799 KN.m/m(0.00425.006+0.02101.75) KN/=0.629 KN.m/m(0.00565.006+0.0211.75)KN/=0.705 KN.m/m3.870KN.m/m+0.20.629 KN.m/m=3.996 KN.m/m3.799KN.m/m+0.20.705 KN.m/m=3.94KN.m/m0.629KN.m/m+0.23.870KN.m/m=1.403KN.m/m0.705KN.m/m+0.23.799 KN.m/m=1.465KN.m/m支座計(jì)算簡(jiǎn)圖0.08276.756 KN.m/m=6.084 KN.m/m0.08146.756 KN.m/m=5.989 KN.m/m0.0576.756 KN.m/m=4.194 KN.m/m0.05716.756 KN.m/m=4.201 KN.m/m區(qū)格B11/3m/6m=0.5跨中計(jì)算簡(jiǎn)圖(0.044.402+0.09651.75) KN/=3.105 KN.m/m(0.00384.402+0.01741.75) KN/=0.412 KN.m/m3.105KN.m/m+0.20.412 KN.m/m=3.187 KN.m/m0.412KN.m/m+0.23.105KN.m/m=1.033KN.m/m支座計(jì)算簡(jiǎn)圖0.08296.152 KN.m/m=4.59 KN.m/m0.0576.152 KN.m/m=3.156 KN.m/m由以上表知道板間支座彎距并不平衡,故取相臨板的支座彎距和的平均值.B1-B2支座: =(8.674+6.151)=7.413B2-B3支座: =(6.151+4.629)=5.390B1-B4支座: =(5.783+4.194)=4.989B2-B5支座: =(4.186+4.179)=4.183B3-B6支座: =(3.15+3.145)=3.148B4-B5支座: =(5.356+5.143)=5.250B5-B6支座: =(5.143+3.549)=4.346B6-B8支座: =(3.145+3.156)=3.151B5-B7支座: =(4.179+3.818)=3.999B2-B4支座: =(4.186+4.194)=4.190B2-B7支座: =(6.151+5.554)=5.853B8-B11支座: =(3.156+3.156)=3.156B7-B10支座: =(3.818+4.201)=4.010B2-B9支座: =(4.186+4.194)=4.190B9-B10支座: =(6.084+5.989)=6.037B10-B11支座: =(4.59+5.989)=5.269連續(xù)雙向板的截面配筋計(jì)算見(jiàn)表2和表3(按彈性理論計(jì)算)板跨內(nèi)及支座取截面有效高度=80mm, =70mm,即可近似按計(jì)算鋼筋截面面積.中間區(qū)格板考慮板的內(nèi)拱作用彎距減少20.表2 跨中彎距配筋計(jì)算截面()M(KN.m)As()配筋實(shí)用As()跨中B1805.038315.668130387701.739124.538200251B2804.1600.8208.528200251701.29792.888200251B3803.1900.8159.908200251701.00863.168200251B4803.0590.8153.338200251701.830114.668200251B5802.8010.8140.408200251701.917124.018200251B6802.4740.8124.018200251701.3900.879.628200251B7804.1290.8206.978200251701.3430.876.948200251B8803.1900.8159.908200251701.0460.879.748200251B9803.9960.8200.38200251701.4030.880.378200251B10803.9400.8197.498200251701.4050.880.498200251B11803.1870.8159.748200251701.0330.859.188200251表3 支座彎距配筋計(jì)算截面()M(KN.m)As()配筋實(shí)用As()支座支B1-B2支座807.413464.4710200479B2-B3支座805.390351.948140402B1-B4支座804.989312.598150335B2-B5支座804.183262.098180279B3-B6支座803.148197.248200251B4-B5支座805.250328.958150335B5-B6支座804.346272.308180279B6-B8支座803.151197.438200251B5-B7支座803.999250.568200251B2-B4支座804.190262.538180279B2-B7支座805.853366.738130387B8-B11支座803.156197.748200251B7-B10支座804.010251.258180279B2-B9支座804.190262.538180279B9-B10支座806.037378.2610200251B10-B11支座805.269330.1310200393驗(yàn)算表中板的配筋率=max(160或192)上表中所有配筋面積都大于192,因此滿足要求。2.1.2、連續(xù)梁的計(jì)算連續(xù)梁的布置如下圖粗實(shí)線所示,計(jì)算方法采用了塑性理論方法(內(nèi)力重分布法).(1)、估計(jì)梁截面尺寸 ,取500,因b不能小于200,故b取250bh=250300mm(2)、荷載設(shè)計(jì)值線荷載:板傳來(lái)恒載 2.713 KN/3.3m1.2= 10.743KN/梁自重 25 KN/(0.5-0.12)m0.25m1.2= 1.35KN/梁側(cè)抹灰 17KN/(0.5-0.12)m0.02m1.22 = 0.147KN/縱隔墻自重19 KN/3.6m0.24m0.61.2=11.820 KN/恒載設(shè)計(jì)值 =10.743KN/ 梯形荷載 g=1.35KN/+0.147KN/+11.820KN/=13.317 KN/ 均布荷載 活載設(shè)計(jì)值 2.5 KN/3.3m1.4=11.55KN/ 梯形荷載 把梯形荷載轉(zhuǎn)化為均布荷載 恒載:10.74KN/(1-20.330.33+0.330.330.33)=8.79 KN/ 活載: 5.78KN/(1-20.330.33+0.330.330.33)=4.73KN/ 即 g18.79 KN/+13.317 KN/22.107 KN/m q14.73 KN/m g= g1+ q1=26.84KN/m, 把三角形荷載化為均布荷載后計(jì)算簡(jiǎn)圖如下(3)內(nèi)力計(jì)算由于跨距不同,所以次梁的彎矩計(jì)算用彎矩分配法求得(具體過(guò)程在過(guò)程材料里面)。彎矩分配圖如下:(4)內(nèi)力匯總截面A支座A-B跨中B支座B-C跨中C支座C-D跨中D支座D-E跨中左右左右左右M(KNm)0115.2-117.438.9-78.881.9-105.315.5V(KN)75.8-112.865.5-47.292.9-100.380.5-截面E支座E-F跨中F支座F-G跨中G支座G-H跨中H支座左右左右左右M(KNm)-105.381.9-78.838.9-117.4115.20V(KN)-80.5100.3-92.947.2-65.5112.8-75.8(4) 截面承載力計(jì)算1) 次梁跨中截面按T形截面進(jìn)行計(jì)算,其翼緣寬度取兩者中的較小值(取最大跨軸線間距7.2m計(jì)算) 取較小值,判斷T型截面類型:取h0=500-30=470mm, 則: >117.4KNm屬于第一類梯形截面。2) 支座截面按矩形截面計(jì)算,均按一排鋼筋考慮,取h0=350-30=320mm3) 次梁正截面受彎承載力計(jì)算樓面次梁正截面受彎承載力計(jì)算截面位置M(KNm)(跨中)或b(支座)(mm2)選配鋼筋實(shí)配鋼筋面積(mm2)A-B跨中115.22.40.0150.015<0.9928234181017B支座-117.40.250.1490.162<0.9199064181017B-C跨中38.92.40.0050.005<0.997277214308C支座-78.80.250.1000.106<0.947590414615C-D跨中81.92.40.0110.011<0.994584414615D支座-105.30.250.1330.143<0.9288044181017D-E跨中15.52.80.0020.002<0.999110210804E支座-105.30.250.1330.143<0.9288044181520E-F跨中81.92.40.0110.011<0.994584414615F支座-78.80.250.1000.106<0.947590414615F-G跨中38.92.40.0050.005<0.997277214308G支座-117.40.250.1490.162<0.9199064181017G-H跨中1112.40.0150.015<0.99282341810174)次梁斜截面受剪承載力計(jì)算由表得最大剪力,所以,所以幾面尺寸滿足要求。箍筋按照構(gòu)造要求,按符合要求。2.2、框架結(jié)構(gòu)計(jì)算2.2.1、框架荷載計(jì)算一、屋面荷載計(jì)算1、恒荷載標(biāo)準(zhǔn)值:現(xiàn)澆40厚細(xì)石混凝土 220.04=0.88KN/捷羅克防水層(厚8mm) 0.10KN/20厚1:3水泥砂漿找平 200.02=0.40KN/膨脹珍珠巖砂漿找坡(平均厚140mm) 140.14=1.96KN/100厚鋼筋混凝土屋面板 250.10=2.50KN/10厚紙漿石灰泥粉平 160.01=0.16KN/輕鋼龍骨吊頂 0.2KN/合計(jì) 6.2KN/2、活荷載標(biāo)準(zhǔn)值: 按上人屋面,取2.0KN/二、樓面荷載(1)、辦公室樓面1、恒荷載標(biāo)準(zhǔn)值:水磨石地面(10mm面層,20mm水泥砂漿打底) 0.65KN/100厚鋼筋混凝土屋面板 250.10=2.50KN/10厚紙漿石灰泥粉平 160.01=0.16KN/輕鋼龍骨吊頂 0.2KN/合計(jì) 3.51KN/2、活荷載標(biāo)準(zhǔn)值: 按“辦公樓”一欄取,取2.0KN/ (2)、過(guò)道樓面:1、恒荷載標(biāo)準(zhǔn)值:水磨石地面(10mm面層,20mm水泥砂漿打底) 0.65KN/80厚鋼筋混凝土屋面板 250.08=2KN/10厚紙漿石灰泥粉平 160.01=0.16KN/輕鋼龍骨吊頂 0.2KN/合計(jì) 3.01KN/2、活荷載標(biāo)準(zhǔn)值: 按“走廊”一欄取,取2.5KN/ 三、梁柱自重1、橫向框架梁(600300):0.25(0.6-0.1)25+(0.6-0.1)0.0220=3.95KN/m2、縱向框架梁(600300):0.25(0.6-0.1)25+(0.6-0.1)0.0220=3.95KN/m3、次梁(500250):0.25(0.5-0.1)25+(0.5-0.1)0.0220=2.66KN/m4、框架柱(600500): 0.60.5252.20.0220=8.38KN/m四、門(mén)窗自重1、門(mén):除底層大門(mén)為玻璃門(mén)外,其余均為木門(mén)。木門(mén)自重:0.2KN/。2、窗:均采用塑鋼玻璃窗。窗自重:0.3KN/。2.2.2、框架梁柱相對(duì)線剛度計(jì)算一、框架柱慣性矩一、 框架梁的慣性矩矩形截面慣性矩:對(duì)中框架梁為三、各層框架梁線剛度各層框架梁線剛度框架梁位置-軸框架梁-軸框架梁-軸框架梁跨度l(mm)660030006600線剛度各層框架柱線剛度框架柱位置頂層框架柱標(biāo)準(zhǔn)層框架柱底層框架柱層高H(mm)360036004600線剛度五、各桿件相對(duì)線剛度以-軸框架梁線剛度相對(duì)值為1,則可算得各桿件相對(duì)線剛度值,注于下圖中。2.2.3、風(fēng)荷載作用下框架的內(nèi)力計(jì)算一、風(fēng)荷載標(biāo)準(zhǔn)值計(jì)算 荷載相同,取軸框架計(jì)算水平風(fēng)荷載。1、基本參數(shù) 得,地面粗糙度為C。風(fēng)載體形系數(shù)和。按照C類粗糙度查的風(fēng)壓高度系數(shù)在3.6m、7.2m、10.8m、14.4m、18.0m、21.6m處分別為0.74、0.74、0.74、0.74、0.80、1.03,。2、風(fēng)荷載標(biāo)準(zhǔn)值計(jì)算:由確定風(fēng)荷載受力圖二、風(fēng)荷載作用下的框架內(nèi)力計(jì)算1、各梁柱相對(duì)線剛度梁、柱位置-跨梁-跨梁-跨梁頂層柱標(biāo)準(zhǔn)層柱底層柱相對(duì)線剛度i0.45510.4550.8330.8330.6522、各柱的剪力值(D值法)風(fēng)荷載做用下各柱的剪力值層數(shù)柱號(hào) (KN)第6層A6(D6)0.5460.2140.178()1.132()1.75B6(C6)1.7470.4660.388()3.80第5層A5(D5)0.5460.2140.178()1.132()2.90B5(C5)1.7470.4660.388()6.35第4層A4(D4)0.5460.2140.178()1.132()3.99B4(C4)1.7470.4660.388()8.71第3層A3(D3)0.5460.2140.178()1.132()5.15B3(C3)1.7470.4660.388()11.08第2層A2(D2)0.5460.2140.178()1.132()6.15B2(C2)1.7470.4660.388()13.45底層層數(shù)柱號(hào) (KN)第1層A1(D1)0.5460.1300.108()0.540()10.76B1(C1)1.7470.1940.162()16.143、各柱反彎點(diǎn)高度根據(jù)總層數(shù)m,該柱所在層數(shù)n,梁柱線剛度比,查表得到標(biāo)準(zhǔn)反彎點(diǎn)系數(shù)y0;根據(jù)上下橫梁線剛度比值i查得修正值y1;根據(jù)上下層高度變化查得修正值y2、y3;各層反彎點(diǎn)高度yh=(y0+y1+y2+y3)h 。風(fēng)荷載作用下各柱反彎點(diǎn)高度層數(shù)第六層 (m=6,n=6,h=3.6m)柱號(hào)y0y1y2y3yh=(y0+y1+y2+y3)h(m)A6(D6)0.5460.2510-0.800.9B6(C6)1.7470.3910-0.801.4層數(shù)第五層 (m=6,n=5,h=3.6m)A5(D5)0.5460.351010101.26B5(C5)1.7470.441010101.58層數(shù)第四層 (m=6,n=4,h=3.6m)A4(D4)0.5460.401010101.44B4(C4)1.7470.451010101.62層數(shù)第三層 (m=6,n=3,h=3.6m)A3(D3)0.5460.451010101.62B3(C3)1.7470.491010101.76層數(shù)第二層 (m=6,n=2,h=3.6m)A2(D2)0.5460.51010101.8B2(C2)1.7470.51010101.8層數(shù)第一層 (m=6,n=1,h=4.6m)A1(D1)0.5460.721010-2.59B1(C1)1.7470.581010-2.09各層柱端彎矩及剪力計(jì)算層次hi/m邊 柱y63.61.750.5460.91.64.753.62.900.5461.263.76.843.63.990.5461.445.78.633.65.150.5461.628.310.223.66.150.5461.811.111.114.610.760.5462.5927.910.9層次hi(m)中柱y63.63.801.7471.45.38.453.66.351.7471.5810.012.843.68.711.7471.6214.117.233.611.081.7471.7619.520.423.613.451.7471.824.224.214.616.141.7472.0933.724.4梁端彎矩、剪力及柱軸力計(jì)算層次AC、DF跨梁CD跨梁柱軸力68.42.66.61.15.85.833.81.12.7518.15.76.62.112.412.438.33.28.9427.28.56.63.218.718.7312.56.418.2334.610.86.64.023.823.8315.810.230.0243.713.76.65.030.030.0320.015.245.0148.615.26.65.633.433.4322.320.861.6根據(jù)計(jì)算結(jié)果畫(huà)出右風(fēng)作用下的框架內(nèi)力圖,左風(fēng)作用下的框架內(nèi)力與右風(fēng)作用下的反號(hào)。(a)彎矩圖(單位:KNm)與梁剪力圖(單位:KN)(b)柱剪力圖與軸力圖(單位:KN)右風(fēng)作用下的框架內(nèi)力圖2.2.4地震荷載作用下框架的內(nèi)力計(jì)算一、水平地震作用標(biāo)準(zhǔn)值的計(jì)算1、框架的抗震等級(jí)由設(shè)計(jì)要求,抗震設(shè)防烈度為7度,房屋高度為21.6m<30m,可知該框架的抗震等級(jí)為三級(jí)。2、場(chǎng)地和特征周期值根據(jù)工程地質(zhì)報(bào)告和土的類型劃分,可知該場(chǎng)地為類場(chǎng)地,場(chǎng)地特征周期為。3、重力荷載代表值(取第軸線框架計(jì)算各層重力荷載代表值)1)頂層重力荷載代表值活荷載:按上人屋面: 雪載: 取最大值:200.64KN 恒荷載:屋面板自重: 柱自重: 縱向框架梁自重: 橫向框架梁自重: 次梁自重:縱墻自重(窗自重按照墻自重乘0.8的折減系數(shù)考慮): 橫墻自重: 女兒墻自重:80.246.61.2=16.21KN 2)第五層重力荷載代表值活荷載: 恒荷載:樓面板自重: 縱向框架梁自重: 96.38KN 橫向框架梁自重; 56.09KN 次梁自重: 33.52KN =551.38KN 第六層下半層:墻體自重(門(mén)窗自重按墻體乘0.8處理): 柱自重: 86KN =189.53KN 第五層上半層:墻體自重(門(mén)窗自重按墻體乘0.8處理): 柱自重: 86KN =195.53KN 3)、第四層重力荷載代表值4)、第三層重力荷載代表值5)、第二層重力荷載代表值6)、第一層重力荷載代表值活荷載: 恒荷載:樓面板自重: 縱向框架梁自重: 96.38KN 橫向框架梁自重; 56.09KN 次梁自重: 33.52KN =551.38KN第二層下半層:墻體自重(門(mén)窗自重按墻體乘0.8處理): 柱自重: 86KN