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1、钢筋混凝土双向板肋梁楼盖课程设计计算书（板塑性理论，梁弹性理论。）一、板的设计1.结构布置及构件尺寸选择双向板肋梁楼盖由板和支承梁构成。双向板肋梁楼盖中，双向板区格一般以3~5m为宜。支承梁短边的跨度为3300mm，支承梁长边的跨度为3900mm。根据图1~12所示的柱网布置，选取的结构平面布置方案如下图所示。板厚的确定：连续双向板的厚度一般大于或等于/50=3300/50=66mm，且双向板的厚度不宜小于80mm，故取板厚为100mm。且满足规范要求。支承梁截面尺寸：根据经验，支承梁的截面高度h=/14~/8，长跨梁截面高度为（3900/14~3900/8）mm=278.6~47
2、8.5mm，故取h=400mm；截面宽度b=h/3~h/2=(400/3~400/2)mm=133.3~200mm，故取b=200mm。短跨梁截面高度为（3300/14~3300/8）mm=235.7~412.5mm，故取h=300mm；截面宽度b=h/3~h/2=(300/3~300/2)mm=100~150mm，根据规范，故取b=200mm.2荷载计算100mm厚钢筋混凝土板：0.1×25=2.5kN/m2；20mm厚水泥砂浆面层：0.02×20=0.4kN/m2；15mm厚石灰砂浆抹底：0.015×17=0.255kN/m2；恒荷载标准值：gk=2.5+0.4+0.255=3
3、.16kN/m2；活荷载标准值：qk=4.0kN/m2。p'=g+q/2=1.2×3.16+1.4×4.0/2=6.592kN/m2alliedmechanicalmaintenancegroup,lawnmaintenance,plantprotectiongroup.Establishmentofconservationofgardenplantsinlongsections,professionalengineers,professionaltechniciansandotherrelatedjobs.1,themaintenanceleadresponsibilities(
4、1)familiarwiththeGroup'sfoundationsofpoliticalthought,technology,culture,workattitudes,feelingsandemotions,habitsandotherpersonalproblems,easytowork.(2)beforework,qualityofwork,requirementsengineering,safety,mechanicalequipmentandsomeofthetechnicalissuesseriouslydisclosuretoworkers,andkeepthei
5、nformationinwriting.(3)whenassigningproductiontaskstotheworkers,toimplementsafetymeasures,completethetasktodoself-examinationrecord.(4)sectionchiefsbevanguardofwork,muststepforwardarefamiliarwiththerelevantbusiness,workinthefield,hard,dirtywork,heavyworkneedtobeattheheadofworktodo"beforecharge
6、inandretreat."(5)payattentiontoeveryteam,everyprocessofclosecooperationandcoordination,basedonthesituationasany,check"playclean"constructiondiariesanddayinformation.(6)thecommunity"activeconservation,wastecrimes",sectionchiefsbesuretoleadthestaffdothriftandcombatwaste.(7)forviolationofconstruc
7、tionlaws,adversequality,safetyandengineeringprogressofunusualtohavethecouragetosucceed,stop.(8)Unityisstrength,sectionchiefisthecoreoftheconservationwork,somodest.2,professionalengineerjobdescriptionofgardenplants(1)implementthenational
