【正文】 he sky and find a bright star in the constellation Aquila as well as the star Vega, which are identified as Niulang and Zhinu. The two stars shine on opposite sides of the Milky Way. Customs In bygone days, Qixi was not only a special day for lovers, but also for girls. It is also known as the Begging for Skills Festival or Daughters39。s time for the wild fruits to ripe. The picturesque Arxan in Autumn is indeed a fairyland only exists in a dream that satisfies all your fantasies. If itShutterbugs flock to see for themselves the marvel of splendid colors around the mountains and waters, many of whom have travel a long distance and even camp here only to capture a moment of the nature wonder. You cannot miss out the Autumn of Arxan. It is definitely the best with brightlycolored scenery full of emotions. Nestled close to the country39。ll為你提供優(yōu)秀的畢業(yè)論文參考資料，請(qǐng)您刪除以下內(nèi)容，O(∩_∩)O謝謝?。?！2 Many people have the same mixed feelings when planning a trip during Golden Week. With heaps of time, the sevenday Chinese為你提供優(yōu)秀的畢業(yè)論文設(shè)計(jì)參考資料，請(qǐng)您刪除一下內(nèi)容，O(∩_∩)O謝謝?。?！National Day holiday could be the best occasion to enjoy a destination. However, it can also be the easiest way to ruin how you feel about a place and you may bee more fatigued after the holiday, due to battling the large crowds. During peak season, a dream about a place can turn to nightmare without careful planning, especially if you travel with children and older people. As most Chinese people will take the holiday to visit domestic tourist destinations, crowds and busy traffic are inevitable at most places. Also to be expected are increasing transport and acmodation prices, with the possibility that there will be no rooms available. It is also mon that you39。底部縱向鋼筋全部伸入支座，不配置彎起鋼筋，所以僅需確定B支座上部鋼筋的切斷點(diǎn)。次梁配筋見附圖（梁配筋圖）。端支座上部鋼筋伸入主梁（360/d)=564mm。3板配筋圖板配筋采用分離式，板面配筋從支座邊伸出長(zhǎng)度a=/4=1980/4=495mm，板配筋圖見附圖（板配筋圖）。 板的縱向鋼筋的混凝土保護(hù)層厚度為20mm,梁最外層鋼筋的混凝土保護(hù)層厚度為25mm。版中鋼筋，梁中箍緊采用HRB335級(jí)鋼筋。 荷載取值：樓面可變荷載標(biāo)準(zhǔn)值14kN/。1施工說明1,、本工程設(shè)計(jì)使用年限為50年，使用環(huán)境類別為2a類。因主梁的腹板高度大于450mm，需在梁側(cè)設(shè)置縱向構(gòu)造筋，%，且其間距不大于200mm。取附加箍筋Φ8150雙肢，則在長(zhǎng)度s內(nèi)可布置附加箍筋的排數(shù)，m=1000/150+1=8排，次梁兩側(cè)各布置4排。驗(yàn)算最小配箍率：==(300150)=%＞=%，滿足要求。 驗(yàn)算截面尺寸：==56380=483mm，因/b=483/300=＜4截面尺寸按下式驗(yàn)算：=1300563=kN＞=，截面尺寸滿足要求。 截 面1B2彎矩設(shè)計(jì)值（kNm?？鐑?nèi)截面經(jīng)判別都屬于第一類T形截面。假定主梁上部縱筋直徑25mm,則一排鋼筋時(shí)，=65020102025/2=588mm，二排鋼筋時(shí)，=58825=563。主梁混凝土保護(hù)層厚度的要求以及跨內(nèi)截面有效高度的計(jì)算方法同次梁，支座截面因存在板、次梁、主梁上部鋼筋的交叉重疊，截面有效高度的計(jì)算方法有所不同。m彎矩包絡(luò)圖如下所示。m接近）第3跨兩集中荷載作用點(diǎn)處的彎矩分別為：G+==m第2跨兩集中荷載作用點(diǎn)處可變彎矩分別為：（G+Q）+=（+）=m（G+Q）++（）=（+）+（+）=m，=m在第2跨內(nèi)：==作G=，Q=，得第1個(gè)集中荷載和第2個(gè)集中荷載作用點(diǎn)彎矩值分別為：（+）m②第2跨有可變荷載，第3跨沒有可變荷載第1跨內(nèi)：在第1跨內(nèi)以支座彎矩=0，=m，=m接近）（G+Q）+=（+）作G=，Q=，得第1個(gè)集中荷載和第2個(gè)集中荷載作用點(diǎn)彎矩值分別為：（G+Q）+=（+）m在第1跨內(nèi)以支座彎矩=0，=m 剪力V=G+Q式中系數(shù)、由附表62相應(yīng)欄內(nèi)查得 =+= == =+=、剪力包絡(luò)圖彎矩包絡(luò)圖：①第3跨有可變荷載，第2跨沒有可變荷載。m==次梁傳來(lái)的永久荷載 =主梁自重（含粉刷）[（）25+（）217）]=永久荷載設(shè)計(jì)值 G=+= 可變荷載設(shè)計(jì)值 Q== 因主梁的線剛度與柱線剛度之比大于5，豎向荷載下主梁內(nèi)力近視按連續(xù)梁計(jì)算，按彈性理論設(shè)計(jì)，計(jì)算跨度支承中心線之間的距離，=6600。 主梁按彈性方法設(shè)計(jì)。驗(yàn)算配筋率下限值：彎矩彎矩調(diào)幅時(shí)要求的配筋率下限為：=。現(xiàn)調(diào)整箍筋間距s=173=138mm，截面高度在300到500㎜的梁，最大箍緊間距200㎜最后取箍緊間距s=140㎜。計(jì)算所需腹筋采用采用Φ8雙支箍筋，計(jì)算支座B左側(cè)截面。斜截面受剪承載力計(jì)算包括：截面尺寸的復(fù)核、腹筋計(jì)算和最小配筋率驗(yàn)算。 次梁正截面受彎承載力計(jì)算截 面1B2C彎矩設(shè)計(jì)值（KN正截面承載力計(jì)算過程列于下表。環(huán)境類別為2a類，C30混凝土，梁的最小保護(hù)厚度c=25mm，假定箍緊直徑為10mm，縱向鋼筋直徑20mm,則一排縱向鋼筋=475251020/2=430mm二排縱向鋼筋=43020=410mm。除支座B截面縱向鋼筋排兩排布置外。 彎矩設(shè)計(jì)值 截 面邊跨跨中1 支座B跨中2計(jì)算跨度： 邊跨 ==（5700120300/2）=5566mm 中間跨==5700300=5400mm因跨度相差小于10%，可按等跨連續(xù)板計(jì)算。次梁在磚墻上的支承長(zhǎng)度為370mm。m）=/（b）=1計(jì)算配筋（）=b/實(shí)際配筋（）Φ8/10110=Φ8/10110=Φ8/10 170=Φ10180= 計(jì)算結(jié)果表明，符合塑性內(nèi)力重分布的原則；/b*h=（100080）=%，%，滿足最小配筋率。板配筋計(jì)算的過程于下表。假定縱向鋼筋直徑d為 8mm,板厚80mm，=hcd/2=80208/2=56mm；板寬b=1000mm。故由M=α（g+q）l可得：因?yàn)榱簲R置在墩墻上，所以邊上支座處彎矩為零。取1m寬板帶作為計(jì)算單元，計(jì)算簡(jiǎn)圖如圖所示 不考慮板塊供作用截面彎矩的折減。于是板的永久荷載設(shè)計(jì)值