【正文】 5 6 4 m m2h h a? ? ? ? ? ? ? ? 3 u 1 c 08()2 250 184 ( 564 )2 10xM f bx hN m m???? ? ? ? ? ??? 當(dāng) 混凝土強(qiáng)度等級(jí)為 C25， 梁所能承叐的彎矩設(shè)計(jì)值 為 10 N mm? 。梁凈跨度 5nlm? 。 A．由鋼筋和混凝土共同 B．由鋼筋和部分混凝土共同 C．僅由鋼筋 D．僅由混凝土 6．其它條件相同時(shí)，鋼筋的保護(hù)層厚度不平均裂縫間距、裂縫寬度的關(guān)系是（ A ）。（ ） 7．靜定的叐扭極件，由荷載產(chǎn)生的扭矩是由極件的靜力平衡條件確定的，不叐扭極件的扭轉(zhuǎn) 剛度無(wú)關(guān)，此時(shí)稱為平衡扭轉(zhuǎn)。 2．鋼筋混凝土偏心叐壓破壞通常分為哪兩種情況？它們的収生條件和破壞特點(diǎn)是怎樣的？ 筓：鋼筋混凝土偏心叐壓破壞 可 分為 兩種情況 ：大偏心叐壓破壞不小偏心叐壓破壞。 承載力計(jì)算以 第三 階段 末 為依據(jù) 。 部分超筋破壞的特點(diǎn)：破壞時(shí)僅縱筋屈服，而箍筋丌屈服；戒箍筋屈服，縱筋丌屈服，破壞時(shí)具有一定的延性，但較適筋破壞時(shí)的截面延性小。箍筋應(yīng)做成封閉式，丏 應(yīng)沿截面周邊布置；當(dāng)采用復(fù)合箍筋時(shí)，位于截面內(nèi)部的箍筋丌應(yīng)計(jì)入?yún)┡に璧墓拷蠲娣e；叐扭所需箍筋的末端應(yīng)做成 135186。 解： 首兇，確定計(jì)算參數(shù)，查教材附錄知 ， HRB335鋼筋 230 0 /yf N mm? 。 A． C20 B． C25 C． C30 D． C15 二、 判斷題 1．普通鋼筋混凝土結(jié)極中采用高強(qiáng)度鋼筋是丌能充分収揮其作用的，而采用高強(qiáng)混凝土可以很好収揮其作用。（ √ ） 8．我國(guó) 《公路橋觃》采用以概率論為基礎(chǔ)的枀限狀態(tài)設(shè)計(jì)法，按分 項(xiàng)系數(shù)的設(shè)計(jì)表達(dá)式迚行設(shè)計(jì)，對(duì)橋梁結(jié)極采用的設(shè)計(jì)基準(zhǔn)期為 50 年。兇張預(yù)應(yīng)力結(jié)極及預(yù)留孔道穿筋壓漿的后張預(yù)應(yīng)力結(jié)極均屬此類。以減少因收縮、徐發(fā)引起的預(yù)應(yīng)力損失。 3）偶然狀態(tài)。 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 Basketball can make a true claim to being the only major sport that is an American invention. From high school to the professional level, basketball attracts a large following for live games as well as television coverage of events like the National Collegiate Athletic Association (NCAA) annual tournament and the National Basketball Association (NBA) and Women39。 smaller gyms used five players on a side, and the larger gyms allowed seven to nine. The team size became generally established as five in 1895, and, in 1897, this was made formal in the rules. The YMCA lost interest in supporting the game because 1020 basketball players monopolized a gymnasium previously used by many more in a variety of activities. YMCA membership dropped, and basketball enthusiasts played in local halls. This led to the building of basketball gymnasiums at schools and colleges and also to the formation of professional leagues. Although basketball was born in the United States, five of Naismith39。s game. Television interest followed the women as well with broadcast of NCAA championship tourneys beginning in the early 1980s and the formation of the WNBA in 1997. Internationally, Italy has probably bee the leading basketball nation outside of the United States, with national, corporate, and professional teams. The Olympics boosts basketball internationally and has also spurred the women39。 the Cleveland Rosenblums, owned by Max Rosenblum。M was almost seven feet tall and Gee Mikan at DePaul was six feet ten inches. While Kurland had perhaps the better college career and played in two Olympics, he chose not to play professional ball, whereas Mikan became the first dominant star in the pros. Their defensive play inspired the rule against goal tending (blocking a shot on its downward flight). Adolph Rupp, who played under Phog Allen, also coached the first of his many talented teams at Kentucky in that decade. However, in 1951, Rupp and six other coaches suffered through a pointshaving scandal that involved thirtytwo players at seven colleges and seriously injured college basketball, particularly in New York, where four of the seven schools were located. While the game survived, the NCAA moved its tournament away from Madison Square Garden to different cities each year and the NIT39。s development: zone defenses, the weave, the passing game, and the fast break. In the decade preceding World War II, five events changed college basketball and allowed it to bee a major spectator sport. In 1929, the rules mittee reversed a decision that 8 would have outlawed dribbling and slowed the game considerably. Five years later, promoter Edward Ned Irish staged the first intersectional twin bill in Madison Square Garden in New York City and attracted more than 16,000 fans. He demonstrated the appeal of major college ball and made New York its center. In December 1936, Hank Luisetti of Stanford revealed the virtues of the onehanded shot to an amazed Garden audience and became the first major collegiate star. Soon thereafter, Luisetti scored an incredible fifty points against Duquesne, thus ending the East39。s World Basketball Association, before the WNBA debuted in 1997 with the support of the NBA. James Naismith, originally from Almonte, Ontario, invented basketball at the International YMCA Training School in Springfield, Massachusetts, in 1891. The game was first played with peach baskets (hence the name) and a soccer ball and was intended to provide indoor exercise for football players. As a result, it was originally a rough sport. Although ten of Naismith39。s basketball. Until World War II, basketball became increasingly popular in the United States especially at the high school and college levels. After World War II, its popularity grew around the world. In the 1980s, interest in the game truly exploded because of television exposure. Broadcast of the NCAA Championship Games began in 1963, and, by the 1980s, cable television was carrying regular season college games and even high school championships in some states. Players like Bill Russell, Wilt Chamberlain, and Lew Alcindor (Kareem AbdulJabbar) became nationally famous at the college level and carried their fans along in their professional basketball careers. The women39。s five basic principles center on the ball, which was described as large, light, and handled with the hands. Players could not move the ball by running alone, and none of the players was restricted against handling the ball. The playing area was also open to all players, but there was to be no physical contact between players。 （ 1）計(jì)算叐壓區(qū)高度 x 2 000 2 dcdMx h h fb?? ? ? mmhmm b 8 55 1 6 22 0 101 6 1 05 1 0062????????????? （ 2）計(jì)算鋼筋數(shù)量 sA mmf bxfAsdcds ????? （ 3）選擇幵布置鋼筋 選用 3