四川交通职业技术学院土木工程英语

四川交通职业技术学院SichuanVocational&TechnicalCollegeofCommunications土木工程英语四川交通职业技术学院教学课件(The2ndTalent-CompetitionforTeachersofSVTCC)国家示范性高等职业技术学院教师：黄蜀云公共课教学部Unit6Stress&DeformationEnglishforCivilEngineering～RoadEngineering四川交通职业技术学院SichuanVocational&TechnicalCollegeofCommunications国家示范性高等职业技术学院|Lead-in(导入)|Dialogue(对话)|Text(课文)|Exercises(练习)|GuidedWriting(写作)|Lead-incopyright@黄蜀云

Stressisthephysicalpressureorotherforcesexertedonanobject.Deformationinanydirectionisthetotalchangeinthedimensionofamemberinthatdirection.DeformationForceEnglishforCivilEngineering～RoadEngineering四川交通职业技术学院SichuanVocational&TechnicalCollegeofCommunications国家示范性高等职业技术学院|Lead-in(导入)|Dialogue(对话)|Text(课文)|Exercises(练习)|GuidedWriting(写作)|Lead-incopyright@黄蜀云

pre-stressingoperatingWorkplatformAnchorboltsrebarconcreteEnglishforCivilEngineering～RoadEngineering四川交通职业技术学院SichuanVocational&TechnicalCollegeofCommunications国家示范性高等职业技术学院|Lead-in(导入)|Dialogue(对话)|Text(课文)|Exercises(练习)|GuidedWriting(写作)|Dialoguecopyright@黄蜀云

A:Sincemanypre-stressingreinforcedconcretecomponentsareadoptedinproject,itisnecessarytohavealookatthepre-stressingoperating.fixingformworkexertingtensionEnglishforCivilEngineering～RoadEngineering四川交通职业技术学院SichuanVocational&TechnicalCollegeofCommunications国家示范性高等职业技术学院|Lead-in(导入)|Dialogue(对话)|Text(课文)|Exercises(练习)|GuidedWriting(写作)|Dialoguecopyright@黄蜀云

B:Therebarispre-stressedfirstbyacertaintensionforceandfixedonbothends.Thenwefixtheformworkandnon-prestressedrebar,andthenpourconcrete.Aftertheconcretereachesthedesignedstrength,thepre-stressedrebarare

released.pouringconcretereleasingrebarEnglishforCivilEngineering～RoadEngineering四川交通职业技术学院SichuanVocational&TechnicalCollegeofCommunications国家示范性高等职业技术学院|Lead-in(导入)|Dialogue(对话)|Text(课文)|Exercises(练习)|GuidedWriting(写作)|Dialoguecopyright@黄蜀云

B:Therebarispre-stressedfirstbyacertaintensionforceandfixedonbothends.Thenwefixtheformworkandnon-prestressedrebar,andthenpourconcrete.Aftertheconcretereachesthedesignedstrength,thepre-stressedrebarare

released.releasingrebarpouringconcreteEnglishforCivilEngineering～RoadEngineering四川交通职业技术学院SichuanVocational&TechnicalCollegeofCommunications国家示范性高等职业技术学院|Lead-in(导入)|Dialogue(对话)|Text(课文)|Exercises(练习)|GuidedWriting(写作)|Dialoguecopyright@黄蜀云

A:Thestrengthfromthepre-stressingmembersistransferredtotheconcrete,isn’tit?B:Yes.Thepre-stressedconcretewilloffsetsomeorallthetensionforcewhenitisunderthesituationoftensionstrength.rebaroffsetthetensionforce

PressureEnglishforCivilEngineering～RoadEngineering四川交通职业技术学院SichuanVocational&TechnicalCollegeofCommunications国家示范性高等职业技术学院|Lead-in(导入)|Dialogue(对话)|Text(课文)|Exercises(练习)|GuidedWriting(写作)|Dialoguecopyright@黄蜀云

A:Arethereanydifferencesbetweenthepre-stressedconcreteandnon-prestressedconcreteinconcretepouring?B:Inordertoreducetheconcreteshrinkageunderthepre-stressing,thepre-stressedconcreteshouldbepouredcontinuouslyinonetimewithoutconstructionjoints.theratioofwaterandcementshouldbelowandtheaggregateshouldbeselectedinbetterquality.constructionjointsEnglishforCivilEngineering～RoadEngineering四川交通职业技术学院SichuanVocational&TechnicalCollegeofCommunications国家示范性高等职业技术学院|Lead-in(导入)|Dialogue(对话)|Text(课文)|Exercises(练习)|GuidedWriting(写作)|Dialoguecopyright@黄蜀云

A:Whencanthefixturesofthepre–stressedrebarberemoved?B:Itdependsonwhethertheconcretestrengthreachesthedesignedvalueornot.Atleastthetestshouldshowthattheresultisuptothestandard.ifthefixturearereleasedtooearly,itwillcauselotsofstrengthlossandevenseriousqualityproblem.EnglishforCivilEngineering～RoadEngineering四川交通职业技术学院SichuanVocational&TechnicalCollegeofCommunications国家示范性高等职业技术学院|Lead-in(导入)|Dialogue(对话)|Text(课文)|Exercises(练习)|GuidedWriting(写作)|Dialoguecopyright@黄蜀云

TechnicalTermsoftheDialogue1.模板2.水泥3.骨料4.钢筋混凝土5.预应力6.预应力钢筋7.施工缝8.拉(张)力EnglishforCivilEngineering～RoadEngineering四川交通职业技术学院SichuanVocational&TechnicalCollegeofCommunications国家示范性高等职业技术学院|Lead-in(导入)|Dialogue(对话)|Text(课文)|Exercises(练习)|GuidedWriting(写作)|Dialoguecopyright@黄蜀云

GroupWorkTrytoexplaininyourownwordsthetechnicaltermslearnedinthedialogueandthentalkabouttheprocessofpre-stressingoperation.EnglishforCivilEngineering～RoadEngineering四川交通职业技术学院SichuanVocational&TechnicalCollegeofCommunications国家示范性高等职业技术学院|Lead-in(导入)|Dialogue(对话)|Text(课文)|Exercises(练习)|GuidedWriting(写作)|Textcopyright@黄蜀云

Whendesigningastructure,thedesignermustestimatealltheforcesactingonthestructureanditscomponentparts.Theeffectsoftheforcesarethenconsideredinrelationtothestabilityofabuildingasawholeandcomponentpartsaremadestrongenoughtocarrytheirparticularfunction.EnglishforCivilEngineering～RoadEngineering四川交通职业技术学院SichuanVocational&TechnicalCollegeofCommunications国家示范性高等职业技术学院|Lead-in(导入)|Dialogue(对话)|Text(课文)|Exercises(练习)|GuidedWriting(写作)|Textcopyright@黄蜀云

Theforcestobeconsidereddependonthetypeandpurposeofthestructure.Inbuildings,forexample,theforceswillbe

duetotheweightofthestructureanditsoccupantsaswellastothepressureexertedbywind.EnglishforCivilEngineering～RoadEngineering四川交通职业技术学院SichuanVocational&TechnicalCollegeofCommunications国家示范性高等职业技术学院|Lead-in(导入)|Dialogue(对话)|Text(课文)|Exercises(练习)|GuidedWriting(写作)|Textcopyright@黄蜀云

Theloadsofabuilding

EnglishforCivilEngineering～RoadEngineering四川交通职业技术学院SichuanVocational&TechnicalCollegeofCommunications国家示范性高等职业技术学院|Lead-in(导入)|Dialogue(对话)|Text(课文)|Exercises(练习)|GuidedWriting(写作)|Textcopyright@黄蜀云

Inthewallforretainingearth,theforceswillbeduetotheweightofthewall,thepressureexertedonthewallbytheearthbehindit,andthepressureduetoanybuildingsorroadwaysnearthetopofthewall.挡土墙受力EnglishforCivilEngineering～RoadEngineering四川交通职业技术学院SichuanVocational&TechnicalCollegeofCommunications国家示范性高等职业技术学院|Lead-in(导入)|Dialogue(对话)|Text(课文)|Exercises(练习)|GuidedWriting(写作)|Textcopyright@黄蜀云

Theinternalfibersorparticlesofthevariouspartsofastructureareputintoastateofstressbytheforcestheyareneededtoresist,thebasicformsofstressbeingtension,compression,shearandtorsion.batensioncompressionEnglishforCivilEngineering～RoadEngineering四川交通职业技术学院SichuanVocational&TechnicalCollegeofCommunications国家示范性高等职业技术学院|Lead-in(导入)|Dialogue(对话)|Text(课文)|Exercises(练习)|GuidedWriting(写作)|Textcopyright@黄蜀云

Intension,thematerialispulledapartorstretchedlikearubberband.

Incompression,thematerialispressedorpushedtogether.EnglishforCivilEngineering～RoadEngineering四川交通职业技术学院SichuanVocational&TechnicalCollegeofCommunications国家示范性高等职业技术学院|Lead-in(导入)|Dialogue(对话)|Text(课文)|Exercises(练习)|GuidedWriting(写作)|Textcopyright@黄蜀云

Whatistorsion?Itmakesthestructurerotateorturn.torsionEnglishforCivilEngineering～RoadEngineering四川交通职业技术学院SichuanVocational&TechnicalCollegeofCommunications国家示范性高等职业技术学院|Lead-in(导入)|Dialogue(对话)|Text(课文)|Exercises(练习)|GuidedWriting(写作)|Textcopyright@黄蜀云

Theshearingforcecausesshearingstress.Itisdefinedasthefractureofthematerialsalongthestressroute.shearFFEnglishforCivilEngineering～RoadEngineering四川交通职业技术学院SichuanVocational&TechnicalCollegeofCommunications国家示范性高等职业技术学院|Lead-in(导入)|Dialogue(对话)|Text(课文)|Exercises(练习)|GuidedWriting(写作)|Textcopyright@黄蜀云

Sincethestructuredesignedbycivilengineersisintendedtobestable,theseforcesmustbekeptinbalance.Theverticalforces,forexample,mustbeequaltoeachother.ifabeamsupportsaloadabove,thebeamitselfmusthavesufficientstrengthtocounterbalancethatweight.F1F2F1F2=Engl棕ish筐for纹Civi暑lEn菌gine爱erin恳g～Road咳Eng搁inee帜ring四川交波通职业蒜技术学烈院Sic担hua泰nV祸oca歪tio颈nal洁&T泛ech泼nic也alCol验leg饥eo铺fC限omm骄uni楚cat却ion厚s国家示范餐性高等职制业技术学派院|Lead妨-in(腊导入)|Dia抽log舟ue(著对话)|Te普xt馋(课文络)|Exer雨cise挣s(练习屯)|Gui吴ded柿Wr帮iti呢ng(警写作)恼|Tex沈tcopy括righ沫t@黄蜀谷云Thehori猫zont变alf堆orce视smust碗als挪obe警equ裁alt除oea酬cho育ther精so条that温the牌rei谱sno本tto益omu仓cht花hrus阿tei亿ther杰to犯the扔righ勒tor卡to蝴the螺left万.th本efo呼rces罩tha虚tmi深ght登pull距the抹str搏uctu紫rea臭roun糖dmu绍stb音eco愤unte忙rbal厨ance势dwi见thf委orce贞sth劣atp龟ull湾int督heo借ppos绝ite昨dire冲ctio罪n.F1F2=F2F1Eng警lis祥hf堤or堤Civ闻il串Eng严ine涨eri寻ng～Roa新dE昏ngi息nee饺rin系g四川交通个职业技术脏学院Sich放uan阅Voca鞭tion静al&啊Tech反nica利lCol恭leg橡eo布fC安omm启uni晌cat劳ion积s国家示范累性高等职扫业技术学粘院|Lead定-in(往导入)|Dia克log杜ue(拉对话)|Tex桃t(课么文)|Exe磨rci仔ses叛(练习同)|Gui讯ded林Wr腊iti沫ng(辉写作)该|Textcop冤yri粉ght酷@黄蜀退云if去am建an诸car莲rie酿sa浩he驻avy辱lo哨ad阴,hi艘sb屋ody榆isdist拳ress雨eda喘saresu厅lto善fthe卡ef故for贡ts险he叨has蹲to圆ma熊ke伶to夜bea今rt距he卵loa昨d.Ino哥rder知to祸gras致pth礼eid夸eao椅fst坡ress恒,it跪is绸help轰ful专tocom锁par继efibe桑rso铁fa茧mate伤rialsubj销ecte愧dtoforc疯etothebone心san活dmu巡寿scle孔sofa迹man劲.Engl言ish正for据Civi坚lEn兔gine张erin愚g～Road拐Eng仇inee滤ring四川交通启职业技术答学院Sic蔽hua通nV螺oca疾tio当nal因&T眠ech羽nic组alCol优leg用eo躺fC翅omm活uni欢cat浸ion味s国家示冬范性高昼等职业造技术学坡院|Lea喇d-i击n(导近入)|Dia尊log沃ue(摸对话)|Tex考t(课要文)|Exe权rci配ses闸(练习为)|Guid炮edW抄riti沸ng(写梁作)|Tex抖tcopy嫌righ氏t@黄蜀晴云Am敌ate座ria取li念ss传ure洋to软de抗for种mtoa液gre强ater酱or包less题ere狠xten刃twhe禽ni桂ti怎ss贝ubj歪ect竞ed上to枯str时ess俩,a梨lth流oug千ht斑he清dim克ens驾ion旅al度var榜iat寻ion钳si昼ns挡tru闯ctu吹ral牵ma片ter吴ial酷sa阔re仓usu辫all存yv锋ery列sl汉igh寒t.持the摊de柿for晶mat岭ion刷pr你odu劣ced辫is瓣of应ten搏ca棋lle命dstra互in.a脾mem于ber虑st利res白sed晕in阀co但mpr卵ess搭ion暖be题com驳es镜sho顾rte途ra熊nd隶fat是ter梅.Engl希ish时for撤Civi扬lEn点gine葵erin剑g～Roa辨dE奖ngi书nee丛rin免g四川交票通职业机技术学叔院Sic拘hua直nV丧oca吨tio毁nal丧&T犹ech端nic酬alColl膝ege辞ofC学ommu携nica粗tion寸s国家示范校性高等职纤业技术学斗院|Lea榴d-i咳n(导须入)|Dial椒ogue功(对话)|Tex冷t(课僻文)|Exer谜cise江s(练习洁)|Gui士ded院Wr居iti势ng(淡写作)缩慧|Textcopy引righ揪t@黄蜀辛云Que足sti衣onsWhat双sho弦uld青ade婆sign柴ere阶stim狱ate败ind眉esig轻ning到as醉truc耻tureWha爆ta轮re熟the隙fo涉ur琴bas品ic熄for挠ms英of恢str的ess猜?How刮ca红nt信he皇for局ces等of碰th坑es缘瑞tru库ctu搞re急be翁kep侦ti撕nb去ala美nce羊?In即wha拒tc见ond替iti治on秧doe劈燕sa觉ma盛ter渣ial辉de粪for桑m?兰Tak句ea忆ne斯xam具pleEng旺lis棕hf燥or坦Civ显il问Eng订ine堆eri备ng～Road厘Eng涛inee仁ring四川交灰通职业从技术学赛院Sic邀hua伏nV串oca卡tio日nal姓&T虚ech液nic扛alColl旨ege撇ofC创ommu非nica别tion滤s国家示稳范性高本等职业塘技术学壳院|Lead禽-in(存导入)|Dial挪ogue阴(对话)|Tex怜t(课军文)|Exer城cise挤s(练习梳)|Gui伞ded峰Wr特iti霸ng(恼写作)来|Textcopy妨righ应t@黄蜀翅云Ans傍wer欺s1.H蛛em警ust率es错tim霜ate轰al脏lt阻he偶for聪ces银ac欺tin积go很nt老he年str杜uct尽ure嗓an养di成ts号com碌pon头ent蠢pa暗rts阿as乏we冒ll挑as涛the很st汪abi缎lit旅yo假ft陶he罩bui滑ldi丈ng.2.T细ens虚ion杀,c怪omp短res抚sio插n,滔she水ar赶and沿to雀rsi浩on.3.S垦ee犯Par坐a.24.A偶mat疮eria支lis弊sur呆eto掩def鹿orm截toa齿gre碰ater增or行less徐ext堤ent吓when挽it墙iss楼ubje山cted喘to贤stre漂ss.陆Ifa衔man挺car锐ries奶ah都eavy类loa赛d,h盆isb敌ody涌isd升istr飞esse源das拿ar赚esul阅t