20xx年電大考試復(fù)習(xí)資料參考小抄-閱讀頁
2024-11-25 11:34本頁面
【正文】 ^。 ( ) 6．斜拉破壞多發(fā)生在剪跨比較大或腹筋配置過少時(shí)。 ( ) 8．大偏心受壓構(gòu)件破壞特征為受拉鋼筋首先到達(dá)屈服，后壓區(qū)混凝土被壓碎，具有塑性破壞的性質(zhì)。 ( ) 10．縱向框架承重有利于增加房屋橫向剛度，但主梁截面尺寸較大。 ( ) 四、簡(jiǎn)答題 (每小題 10 分。答： 3．影響磚砌體抗壓強(qiáng)度的主要因素是什么 ?答： 五、計(jì)算題 (共計(jì) l9 分 ) 1．矩形截面簡(jiǎn)支梁，截面尺寸為 200X500mm，采用 C25 砼， HRB335級(jí)縱向受力鋼筋，在受拉區(qū)配置有 5 根直徑 20mm 的鋼筋(AS=l570mm2)，試求截面所能承受的最大彎距。m ，采用 C25砼， HRB400 級(jí)受力鋼筋，已知 求該 柱所需的鋼筋面積 試卷代號(hào)： 2347 中央廣播電視大學(xué) 20202020 學(xué)年度第二學(xué)期 “ 開放專科 期末考試建筑施工專業(yè) 建筑結(jié)構(gòu) 試題答案及評(píng)分標(biāo)準(zhǔn) (供參考 ) 2020年 7月 一、單項(xiàng)選擇題 (每小題 2分。 2．答：梁斜截面的三種破壞形態(tài)以及其破壞條件： (1)剪跨比較小時(shí)或剪跨比適中但配箍率過大時(shí)，發(fā)生斜壓破壞； (2)剪跨比較大或配箍率較小時(shí)，發(fā)生斜拉破壞； (3)剪跨比適中，配箍率合適時(shí)發(fā)生剪壓破壞。 五、計(jì)算題 (共計(jì) l9 分 ) 1． (10分 )解： (1)驗(yàn)算條件 (5分 ) 滿足要求 (2)求極限彎矩 (5 分 ) 2． (9分 )解： (1)假設(shè)為大偏壓構(gòu)件 (3分 ) 假設(shè)成立，為大偏壓構(gòu)件 (2)計(jì)算偏心距及配筋面積 (6分 ) 專業(yè)好文檔 Winger TuivasaSheck, who scored two tries in the Kiwis39。s effort in their first pool match against England on the opening day. Aussie winger Jarryd Hayne is the petition39。d give every award back in a heartbeat just to get across the line this weekend, said (lack of) air up there Watch mCayman Islandsbased Webb, the head of Fifa39。s 150th anniversary celebrations and will attend City39。s about how he felt and I would like to speak to him first to find out what his experience was. Uefa has opened disciplinary proceedings against CSKA for the racist behaviour of their fans during City39。s governing body, has also ordered an immediate investigation into the referee39。s plaint. In a statement the Russian side added: We found no racist insults from fans of CSKA. Baumgartner the disappointing news: Mission aborted. The supersonic descent could happen as early as Sunda. The weather play s an important role in this mission. Starting at the ground, conditions hav e to be v ery calm winds less than 2 mph, with no precipitation or humidity and limited cloud cov er. The balloon, with capsule attached, will mov e through the lower lev el of the atmosphere (the troposphere) where our day today weather liv es. It will climb higher than the tip of Mount Ev erest ( miles/ kilometers), drifting ev en higher than the cruising altitude of mercial airliners ( miles/ kilometers) and into the stratosphere. As he crosses the boundary lay er (called the tropopause),e can expect a lot of turbulence. The balloon will slowly drif t to the edge of space at 120,000 f eet ( Then, I would assume, he will slowly step out onto something resembling an Oly mpic div ing platf orm. They blew it in 2020 when they got caught cold in the f inal and they will not make the same mistake against the Kiwis in Manchester. Fiv e years ago they cruised through to the f inal and so far history has repeated itself here the last try they conceded was scored by England39。 f ocus in their games since then. They hav e been concentrating on the sort of stuff that wins y ou tough, even contests strong def ence, especially on their own goalline, pleting sets and a good kickchase. They 3
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