【正文】
ih — 下層柱高 jh — 上層柱高,(對于頂層為女兒墻高 2 倍,本設(shè)計(jì)中沒有女兒墻不考慮) B— 計(jì)算單元迎風(fēng)面 寬度, B= 計(jì)算過程見 表 3。 縱墻 =鋁合金窗 = kN/m 水刷石外墻面 = kN/m 粉刷石膏砂漿內(nèi)墻面 *7=9 合計(jì) kN/m ( 2)底層 縱墻在計(jì)算單元內(nèi)相當(dāng)于高度為 0. 56. 9 2*2. 1*1. * ?)()(m的墻,鋁合金窗在計(jì)算單元內(nèi)相當(dāng)于高度為 。 ??EFDECDBCAB 、 *.4559 10*.9253i 101039。 由于該榀框架結(jié)構(gòu)對稱,因此只需計(jì)算半邊結(jié)構(gòu)。 7 梁柱線剛度計(jì)算 對于現(xiàn)澆樓板,中框架梁取 02II? , 30 112I bh?, cEIi l? 。底層柱高從基礎(chǔ)頂面算至二層樓面,基礎(chǔ)頂面至室外地面的高度為 3m,室內(nèi)外高差為 ,因此基底層高標(biāo)高為 ,二層樓面標(biāo)高為 ,故底層框架柱高為 ,其余各層柱高從樓面算至上一層樓面(即層高),故均為 m。假定框架柱嵌固于基礎(chǔ)頂面,框架梁與柱剛接。 C30 混凝土 , cf = N/mm2 經(jīng)計(jì)算,取柱截面為正方形,考慮到施工、計(jì)算簡便以及安全因素,各柱截面尺寸從底層到頂層均取為 600 mm ? 600 mm。 僅估算底層柱。 框架柱截面尺寸還應(yīng)根據(jù)公式 ? ?c cNA f?? N估算。室內(nèi)外高差為 , ,所以室外標(biāo)高為 ,基礎(chǔ)頂面標(biāo)高為 6 2 梁、柱截面尺寸估算 梁截面尺寸估算 框架主梁截面高度 11( ~ )16 12hl?,截面寬度 11( ~ )32bh?,本結(jié)構(gòu)中?。? 縱向框架梁: b=350mm h=700mm 次梁: b=200mm h=500mm 柱截面尺寸估算 框架柱的截面尺寸 11~12 18cibH??? ????, ? ?12cchb? , iH 為第 i 層層高。 混凝土:采用 C30 混凝土; 墻體:采用加氣混凝土砌塊,重度 ? = kN/m3 ; 窗:鋁合金窗, ? = kN/m3 ; ( 8) 墻體厚度:內(nèi)外墻厚 240mm。 ( 6) 抗震設(shè)防烈度:六度設(shè)防。 ( 4) 基本風(fēng)壓: kN/ m2,地面粗糙度為 C 類。 ( 3) 工程概況:建筑層數(shù) 5 層,一層高 5m,其它層 4m,室內(nèi)外高差 450mm,建筑高度 ,建筑面積 9522m2。 關(guān)鍵詞 : 框架 結(jié)構(gòu)設(shè)計(jì) 抗震設(shè)計(jì) 3 Abstract The purpose of the design is to do the antiseismic design in the longitudinal frames of axis 20. When the directions of the frames is determined, firstly the weight of each floor is calculated .Then the vibrate cycle is calculated by utilizing the peakdisplacement method, then making the amount of the horizontal seismic force can be got by way of the bottomshear force method. The seismic force can be assigned according to the shearing stiffness of the fra mes of the different axis. Then the internal force (bending moment, shearing force and axial force ) in the structure under the horizontal loads can be easily calculated. After the determination of the internal force under the dead and live loads, the bination of internal force can be made by using the Excel software, whose purpose is to find one or several sets of the most adverse internal force of the wall limbs and the coterminous girders, which will be the basis of protracting the reinforcing drawings of the ponents. The design of the stairs is also be approached by calculating the internal force and reinforcing such ponents as landing slab, step board and landing girder whose shop drawings are pleted in the end. The structural design stage can be roughly divided into three stages, the structure of the programme stage, structural calculations of stage design and construction plans. Keywords : frames, structural design, antiseismic design 4 目錄 目 錄 .................................................................................................................................................. 1 結(jié)構(gòu)計(jì)算書 ........................................................................................................................................ 5 1 設(shè)計(jì)資料 ........................................................................................................................................ 5 2 梁、柱截面尺寸估算 ...................................................................................................................... 6 梁截面尺寸估算 ................................................................................................................... 6 柱截面尺寸估算 ................................................................................................................... 6 3 框架計(jì)算簡圖及梁柱線剛度 ............................................................................................................ 6 確定框架計(jì)算簡圖 ............................................................................................................... 6 梁柱線剛度計(jì)算 ................................................................................................................... 7 4 荷載計(jì)算 ........................................................................................................................................ 7 恒荷載標(biāo)準(zhǔn)值計(jì)算 ............................................................................................................... 7 屋面 .......................................................................................................................... 7 各層樓面 ................................................................................................................... 8 梁自重 ...................................................................................................................... 8 柱自重 ...................................................................................................................... 8 內(nèi)、外縱橫墻自重 ..................................................................................................... 8 活荷載標(biāo)準(zhǔn)值計(jì)算 ............................................................................................................... 9 屋面和樓面活荷載標(biāo)準(zhǔn)值 .......................................................................................... 9 雪荷載標(biāo)準(zhǔn)值 ............................................................................................................ 9 恒荷載和活荷載作用下框架的受荷圖 ................................................................................... 9 A~ F軸間框架梁 ....................................................................................................... 9 A、 F軸柱縱向集中荷載的計(jì)算 ................................................................................ 10 B、 C、 D、 E軸柱縱向集中荷載的計(jì)算 .......................................................................11 風(fēng)荷載標(biāo)準(zhǔn)值計(jì)算 ............................................................................................................. 12