江蘇廣播電大《建筑力學(xué)》課程2016期末考試形成性考核作業(yè)及答案

1、江蘇廣播電視大學(xué)建筑力學(xué)課程 2016期末考試形成性考核作業(yè)及答案任務(wù)內(nèi)容:1 判斷題(每小題表述是正確的在括號(hào)中打，錯(cuò)誤的在括號(hào)中打X每題4分共40 分)(1 )力矩方程建立與坐標(biāo)原點(diǎn)位置有關(guān)。(X )(2 )投影方程建立與坐標(biāo)軸方向有關(guān)。( V )(3 )平面匯交力系可建立兩個(gè)獨(dú)立的平衡方程。(V )(4 )圓柱鉸鏈和固定鉸支座的約束力一定是兩個(gè)未知因素。( X )(5 ) n個(gè)物體組成的物體體系在平面力系作用下，最多可建立3n個(gè)獨(dú)立的平衡方程。 (V )(6)超靜定問(wèn)題無(wú)法能用平衡方程求解出所有未知因素。(V )再應(yīng)用平衡原理，確定內(nèi)力。(7 )截面法是將構(gòu)件用假想截面截開(kāi)，將內(nèi)力顯露出

2、來(lái)，(8 )軸向拉壓桿的內(nèi)力只有一種。(9 )桁架是由二力直桿結(jié)成的結(jié)構(gòu)。(10 )零桿在桁架結(jié)構(gòu)中，是可有可無(wú)的構(gòu)件。2 單項(xiàng)選擇題(在每小題列出的四個(gè)備選項(xiàng)中只有一個(gè)是符合題目要求的，請(qǐng)將其代碼填寫(xiě)在題后 的括號(hào)內(nèi)每題4分，共40分)B )個(gè)獨(dú)立的投影方程。(1 ) 一個(gè)平面力系最多可建立(A.1B.2C.3D. 4C )。(2) 約束力求出來(lái)為負(fù)值，說(shuō)明(A .該力的大小值小于零B. 該力的方向與投影軸方向相反C. 該力的方向與受力圖中所標(biāo)的方向相反D .該力的方向與投影軸方向相同(3) 一桿件兩端由圓柱鉸鏈與其他物體相聯(lián)，中間無(wú)外力作用，桿件的未知量(B )。正確答案 為：AA. 1B

3、.2C.3D. 4(4) 一力離開(kāi)原作用線，平移到物體新的位置，則物體(A )。正確答案為：BA .運(yùn)動(dòng)效應(yīng)不變B.移動(dòng)效應(yīng)不變C .轉(zhuǎn)動(dòng)效應(yīng)不變D .所有效應(yīng)不變(5)求出的支座約束力要注明(C )。A .數(shù)值B .數(shù)值和單位C.數(shù)值、單位和方向D.數(shù)值和方向(6 )求三鉸剛架支座約束力，最簡(jiǎn)捷的方法，第一個(gè)研究對(duì)象是(C )。A.左半個(gè)剛架B. 右半個(gè)剛架C. 整體D .以上都不合適（7）桿件的基本變形有（ B ）種。正確答案為：DA.1B.2C.3D. 4（9）軸向拉壓桿截面的內(nèi)力有（ A ）種。A.1B.2C.3D. 4（10 ）計(jì)算桁架結(jié)構(gòu)的結(jié)點(diǎn)法，一次可計(jì)算（B ）個(gè)未知量。A.1

4、B.2C.3D. 43、計(jì)算題（20分）1 .圖示力系中F仁F2= F ，F(xiàn)3=F4=2 F,圖中方格的邊長(zhǎng)為 a。求圖中力系的合力對(duì) 0點(diǎn)的矩。解:M (F)= MF1yaJ1a! rOx7F 2題1圖o(F1)+M o(F2)+ M o(F3)+ M o(F4)3X.a +F 3y . .,2.a+F.o) +(F 4x.2a-F 4y .a).a=F.a-F.2a+(-F=F.a-2F.a-F.=-Fa戀愛(ài)運(yùn)UP尢的族人肚哲一緒VLets月亭方正！ 7才！気持弐總今歹、Flying Getdou都斗豆逗陡抖痘兜讀蚪竇篼蔸乧侸兠凟剅吺唗投斣枓梪橷毭氀浢瀆瀆瞗窬竇脰艔豆讀逾郖酘酡鈄鋀鈄閗闘阧

5、餖饾斗鬦鬪鬭鬭du讀度毒渡堵獨(dú)肚鍍賭睹杜督都犢妒頓蠹篤嘟瀆犢牘黷髑芏儥凟剢剫匱厾噣土涂妬嬻剬塅媏彖斷毈瑖碫篅 籪緞專腶葮褍踹躖鍛鍴Mr Najib met search crews at Pearce RAAF base n ear Perth on Thursday morning, before their pla nes left for the day, and the n later held talks with Mr Abbott.The disappeara nee of MH370 has tested our collective resolve, he told a n

6、ews conference.Faced with so little evidenee, and such a Herculean task, investigators from Malaysia, the US, theUK, China, Australia and France have worked without pauseHe tha nked both search teams and theAustralia n gover nment for their efforts in recent weeks, and said the search would go on.Co

7、n ti nue readi ng the main storyMH370 - Facts at a gla nee8 March: Malaysia Airli nes Kuala Lumpur-Beij ing flight carry ing 239 people disappearsPlan es transpon der, which com mun icates with gro und radar, was switched off as it left Malaysia n airspaceSatellite pin gs in dicate pla ne was still

8、flyi ng seve n hours after satellite con tact was lost24 March: Based on new calculati ons, Malaysia n PM says bey ond reas on able doubt that pla ne crashed in souther n In dia n Ocea n with no survivorsWhat we knowThe search for flight MH370I know that until we find the plane, many families cannot

9、 start to grieve. I cannot imagine what they must be going through. But I can promise them that we will not give up, he said.Malaysia n authorities have come in for heavy criticism over their man ageme nt of the search, especially from relatives of thWeather conditions were fair, with visibility of

10、approximately 10km (6 miles), the Joint Agency Coordination Centre (JACC) - which is overseeing the search - said.The British submarine HMS Tireless is also in the southern Indian Ocean and is due to be joined by Royal Navy ship HMS Echo.The Australia n Navy ship Ocea n Shield is head ing to the reg

11、i on and has equipme nt for detect ing the planes black-box flight recorder.Experts say tim ing is critical as the flight recorder may only have eno ugh battery power to send out a signal until 7 April.Air Chief Marshall An gus Houst on, head of the JACC, warned that the search operati on faced mult

12、iple difficulties.This is one of the most dema nding and challe nging search and rescue operati ons, or search and recovery operations, that I have ever seen and I think probably one of the most complex operations of this nature that the world has ever seen, he told Mr Najib and Mr Abbott.On Wedn es

13、day Malaysia n police chief Khalid Abu Bakar said in vestigators had cleared all passe ngers of possible in volveme nt in hijack ing, sabotage or havi ng pers onal or psychological problems that could have bee n conn ected to the disappeara nee.But he said that the criminal investigation could go on

14、 and on and on. We have to clear every little thi ng.At the end of the investigations, we may not even know the real cause. We may not even know the reas on for this in cide nt, he added.The police chief said that more tha n 170 in terviews had bee n con ducted with family members of the pilots and

15、crew members, and that even cargo and food served on the pla ne were being in vestigated in case of dui對(duì)隊(duì)堆兌敦鐓碓懟憝兊兌垖埻塠奪奪対對(duì)嵟憞懟捶杸濧濻瀢瀩痽磓祋綐膭薱諛譈譵追鈗銳銳錞鎚鐓鐜銳陮隊(duì)頧鴭dul乧dun噸頓蹲墩敦鈍盾囤遁不躉沌盹鐓礅燉砘伅俊噸墪壿庉忳敦?zé)鯎嵌臻箻鷿棢鯛元柎]腞腯蜳豚踲蹾躉逇遯鈍鐓鐜頓驐duo多朵奪舵剁垛跺惰墮掇哆馱度躲踱沲咄鐸裰哚綞亸仛兊兌兌澤刴剟剫吋喥嚉嚲垜埵墮墮夛奪奲媠嫷尮崜嶞憜挅挆捶揣敓敚敠敪朶雜杕枤柁柂柮桗棰椯橢毲沰沱澤痥硾綞茤袳詑誃貀趓跢跥跿躱軃鄲鄲鈬錞鍺

16、鐸鍺陀陊隋隋隓飿饳馱駄鬌鮵鵽點(diǎn)e餓哦額鵝蛾扼俄訛阿遏峨娥惡厄鄂鋨諤堊鍔閼萼苊軛婀莪鱷顎腭愕呃噩鶚屙亞亜亞偽佮侉偔偽偽僫匎匼 卾吪呝咢咹啞唖啈啊啐啞惡囐囮埡埡堊堨堮妸妿姶娾娿媕屵岋峉峩崿庵廅悪惡戹搕鎰?chuàng)彅A曷枙椏櫮唉歞歹 歺洝涐湂玀珴琧庵娥睋砈砐砨砵硆硪磀礘胺蒍蕚蘁蚅蝁覨訛咯誐諤譌讍豟軛軶輵迗遌遻邑鈋鋨鍔鑩閜閼阨 阸隘頞頟額顎餓餩騀鬲魤?mèng)婘{鰪鱷鴳鵈鵝鵞鶚齃腭齾青年（相人）、技術(shù)（、戀愛(ài)（料人笳X）、翡翠（、読書(shū)（、人心、幸福（乙：）、訓(xùn)讀詞匯：青、術(shù)（r）、戀（乙X）、好吉（歹吉）、読、人（q）、幸（L笳初乜）、漢字“?！笨梢宰x成“力、X”也可以讀成“刁族”。“力、X”是它的音讀，“旳”是它的訓(xùn)讀

17、。“史憲巨”等漢字一般只使用它們的一種音讀，“貝又咲（一般只使用它們的一種訓(xùn)讀， 但這類漢字較少。日語(yǔ)里的漢字通常都有兩三種甚至更多的音訓(xùn)讀發(fā)音。比如“生”，音讀可讀作“七彳 少mb”，訓(xùn)讀可讀作“X吉$X力、rX療刁去料召刁住指刁處元吉肚去”等。同上面所說(shuō)的，漢字每個(gè)字都有與之對(duì)應(yīng)的音讀、訓(xùn)讀，但也有一些比較特殊。比如“梅雨”，它的 發(fā)音為 rb，不能把每個(gè)漢字分別讀什么區(qū)分開(kāi)來(lái)。我們把這類發(fā)音叫做“熟字訓(xùn)”。以下這些也是“熟字訓(xùn)”：田舎（肚力、）時(shí)雨（）相撲（寫(xiě)作“相撲”，歹哲刁）土產(chǎn)（風(fēng)悅為替（力、初乜）紅葉（）吹雪（懇吉） 足袋（日和（）蒲公英（尢珀貳）en恩摁蒽嗯奀峎煾饐唔eng鞥e

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