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13980069335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-stressedrebararereleased.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-stressedrebararereleased.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.rebaroffsetthetensionforcePressureEnglishforCivilEngineering～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,theforceswillbeduetotheweightofthestructureanditsoccupantsaswellastothepressureexertedbywind.EnglishforCivilEngineering～RoadEngineering四川交通职业技术学院SichuanVocational&TechnicalC