【正文】
00900600600600600 實配非加密區(qū)實配箍筋28200281602102002820028160210150 框架梁抗裂縫寬度驗算梁AB(1層跨中截面)取框架梁的裂縫寬度驗算見表84,表85 表84四層框架梁的裂縫寬度驗算位置截面公式梁HG梁GF左支跨中右支左支跨中右支44444(mm)16161616161644(mm) 滿足要求 表85一層框架梁的裂縫寬度驗算位置 截面公式 梁HG梁GF左支跨中右支左支跨中右支11111(mm)2020202016201 1 (mm) ,滿足要求 截面設(shè)計軸壓比驗算:底層柱:軸壓比: 滿足要求:柱同一截面同時承受正、反向彎矩,故采用對稱配筋 B軸柱:底層: 柱的內(nèi)力組合表可見,由于,為大偏心受壓,選用M大N小的組合,最不利組合為{75%,柱的計算長度 取下列二式中的較小值: 式中:—柱的上端,下端節(jié)點交匯的各柱線剛度之和與交匯的各梁線剛度之和的比值—比值中的較小者H—柱的高度,對底層柱為基礎(chǔ)頂面到一層樓面的高度 所以 所以取 所以取 由《建筑抗震設(shè)計規(guī)范》(GB500112001)%。在求各中間支座最大負(fù)彎矩(絕對值)時,按恒荷載及活荷載均布滿跨布置。:大理石面層 100厚鋼筋混凝土樓板 12厚板底摸灰 合計 恒載設(shè)計值 活載設(shè)計值 總計 內(nèi)力計算:板的配筋計算:查表可得:時,跨內(nèi): 支座: 則計算可得:跨內(nèi): 支座: 跨內(nèi)支座處彎矩已求得,即可近似按,算出相應(yīng)的截面配筋面積。11 基礎(chǔ)設(shè)計設(shè)計基礎(chǔ)混凝土采用C30,設(shè)計基礎(chǔ)的荷載包括:框架柱傳來的彎矩、軸力和剪力(可取設(shè)計底層柱的相應(yīng)控制力);基礎(chǔ)自重、回填土的重量。清華大學(xué),1996附錄Damage Identification Based on DeadLoad Redistribution: MethodologyHarry W. Shenton III, 。 the most popular are ambient vibration, impulse response, and forced harmonic vibration. Accelerations are usually measured in the dynamicbased techniques. A tremendous amount of work has been conducted on damage detection based on dynamic responses. Doebling et al. (1996) provides a prehensive literature review of the work in this area. The review is updated for literature published between 1996 and 2001, in Sohn et al. (2003). While some have found success, dynamicbased techniques are faced with a number of practical challenges when applied to large, massive, civil structures. First, it is very difficult to excite a large structure to a level that v, ill elicit changes in the signal outputs resulting from localized damage. It is often impractical and too expensive to attempt to excite the structure at all in a controlled way, and therefore, many dynamic techniques rely on ambient vibrations. Second, in an ambient vibration survey the excitation is provided by a host of uncontrolled sources, such as wind, microtrenmrs, traffic, and extraneous vibration sources. These same sources are present in a forced vibration test, but are usually not measured or accounted for in the analysis and have the effect of contaminating the signal outputs relative to the known excitation. Third, field tests have shown that the variability of the test data from replicate tests conducted on different days, due to such things as temperature and extraneous excitation sources, can be of the same order of magnitude as the changes due to the damage imposed。 Monitoring。1) 梁肋處斜截面抗剪強度驗算地基凈反力值為,則單位面積的地基凈反力肋梁處的剪力要求肋梁檢算截面的實際有效高度,滿足抗剪要求。支座處: :選用。恒荷載:踏步板自重 踏步面層重 踏步抹灰重 共計 使用活荷載: 活荷載和恒載總計: :計算簡圖見圖101;斜梁截面尺寸選用,則踏步板的計算跨度為: 踏步板的跨中彎矩: :踏步板計算截面尺寸為 圖101 樓梯結(jié)構(gòu)布置及剖面圖故踏步板應(yīng)按構(gòu)造配筋,每踏步采用取踏步板內(nèi)斜板的分布鋼筋為。所以按照構(gòu)造配筋每側(cè)實配4C18(),另兩側(cè)配構(gòu)造鋼筋4 16 A軸柱:底層:從內(nèi)力組合表可見為大偏心受壓,選用M大N小的組合,最不利組合為{柱的計算長度 所以取 所以取由于是對稱配筋, 由《建筑抗震設(shè)計規(guī)范》(GB500112001)%。4 荷載計算 恒載標(biāo)準(zhǔn)值的計算 屋面 中南標(biāo)98ZJ001屋面16 kN/m2 結(jié)構(gòu)層:120厚現(xiàn)澆鋼筋混凝土板 25= kN/m2 抹灰層:98ZJ001頂3 ,12厚混合沙漿 kN/m2 總計: kN/m2 各層樓面 中南標(biāo)98ZJ001樓面6 kN/m2 結(jié)構(gòu)層:120厚現(xiàn)澆鋼筋混凝土板 25= kN/m2 抹灰層:12厚混合沙漿 kN/m2 總計: kN/m2 bh=250mm600mm梁自重 () 25 = 抹灰層:12厚混合砂漿 = kN/m總計: 圖31 結(jié)構(gòu)計算簡圖 bh=250mm500mm 梁自重 () 25 = kN/m抹灰層:12厚混合砂漿 = kN/m總計: bh=250mm450mm 梁自重 () 25 = kN/m 抹灰層:12厚混合砂漿 = kN/m 總計 kN/m bh=500mm500mm 柱自重 25= kN/m中南標(biāo)98ZJ001外墻4 (++)17= kN/m總計: 標(biāo)準(zhǔn)層 縱墻: 7= kN/m 鋼塑窗: = kN/m 貼瓷磚外墻面: ()= kN/m 混合砂漿內(nèi)墻面: ()= kN/m 總計 kN/m 底層 縱墻: ()7= kN/m 鋼塑窗: = kN/m 貼瓷磚外墻面: ()= kN/m 混合砂