電大建筑結(jié)構(gòu)期末復(fù)習(xí)參考資料小抄-展示頁(yè)
2025-06-19 15:49本頁(yè)面
【正文】 V≤ 時(shí)（ C）。 矩形截面梁，正截面承載力計(jì)算公式的第二個(gè)適用條件 /2 sax? 的物理意義是（ C）。 A.≤ 8 B.≤ C.≤ 5 D≤ 6 鋼筋混凝土受壓柱，大小偏壓構(gòu)件的判斷條件是（ C）。 +A （ C）。 ，后壓區(qū)混凝土被壓碎 ，后壓區(qū)混凝土被壓碎 ，要求受壓區(qū)高度 ,2 sax? ，目的是為了（ A）。 ＞剪壓破壞的承載力＞斜拉破壞的承載力 ＞斜壓破壞的承載力＞斜拉破壞的承載力 ＞斜壓破壞的承載力＞剪壓破壞的承載力 力＞斜拉破壞的承載力＞斜壓破壞的承載力 ，上柱柱間支撐和下柱柱間支撐的設(shè)置位置合理的是（ B）。 三、簡(jiǎn)答題 ，梁的正截面破壞形式的變化。 ？每一個(gè)階段末的應(yīng)力狀態(tài)可以作為什么驗(yàn)算的依據(jù)？ 答： 1）第一階段一彈性階段，此階段截面的應(yīng)力狀態(tài)是抗裂驗(yàn)算的依據(jù) 。 3）第三階段一破壞階段，這時(shí)的應(yīng)力狀態(tài)可作為構(gòu)件承載力計(jì)算的依據(jù)。 答：大偏心受壓構(gòu)件的破壞特征為受拉鋼筋先屈服，后受壓區(qū)混凝土被壓碎和受壓鋼筋屈服，為塑性破壞，破壞前有明顯預(yù)兆，鋼筋強(qiáng)度得以充分利用；小偏壓構(gòu)件破壞特征為受壓區(qū)混凝土被壓碎，受壓鋼筋屈服，而受拉鋼筋不論受壓或受拉，均未達(dá)到屈服強(qiáng)度，為脆性破壞，受拉鋼筋強(qiáng)度得不到充分利用。 答 ：梁斜截面的三種破壞形態(tài)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(guò)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。 哪三種？規(guī)范是如何劃分靜力計(jì)算方案的？ 答：按照房屋空間剛度的大小房屋的靜力計(jì)算方案可劃分為彈性方案、剛性方案和剛彈性方案。 四計(jì)算題 ，截面尺寸 b h=250 500mm，采用 C30 砼， HRB335 級(jí)縱向受力鋼筋，承受彎距設(shè)計(jì)值 M=250kN 已知， ,/300,/ 221 mmNfmmNfa yc ?? ρmin=%， ζb=， h0=465mm， )2/(, 001 xhAfMhxbbfa Afx syUbc Sy ???? ?。, 5 54 6 6 42 5 1 9 6 43 0 001bbbcsyxxmmhxmmbfa Afx????????????? %%%100500250 1964 ??????? hbA s? 不會(huì)少筋梁 )2 (1964300)2( 0 ?????? xhAfM syu =＜ M=250KNm 梁截面不安全。 已知： 穩(wěn)定系數(shù)見(jiàn)下表。 解： 104 0 0/4 0 0 0/0 ??b? Ф= 計(jì)算 NU NU= （ 400 500+360 1964） =＜ N=4000KN 此柱不安全。試驗(yàn)算外縱墻的高厚比是否滿足要求。 請(qǐng)您刪除一下內(nèi)容， O(∩_∩)O謝謝?。?！ 2021 年中央電大期末復(fù)習(xí)考試小抄大全，電大期末考試必備小抄，電大考試必過(guò)小抄 Many people have the same mixed feelings when planning a trip during Golden Week. With heaps of time, the sevenday Chinese 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。s largest virgin forest, and known for its spring and ecological environment, Arxan is marveled at by many tourists as the purest land on earth. You cannot miss out the Autumn of Arxan. It is definitely the best with brightlycolored scenery full of emotions. Autumn in the northern part of the country es earlier than the South. A September rain followed by the footprints of Autumn brings more colors to the once emerald green mountain and blooming grassland. Shutterbugs 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. The silver birch turns golden, while the larch is still proudly green. You will find yourself drowned in the intoxicating red of the wild fruits as well as the glamour of flowers in full blown. And your heart will be lingering on the woods as it39。s misery,
試題試卷相關(guān)推薦
鄂ICP備17016276號(hào)-1