崔春婷：机勘大厦设计（方案一）2012土木工程专业毕业设计摘要本计算书针对总建筑面积为4100m2的6层的多层混凝土框架结构进行设计。分别从建筑设计、结构设计、应力计算等几个方面详细分析。建筑设计部分包括平面设计、立面设计、剖面设计，楼梯设计，屋面设计及建筑构造几个部分。1层为大厅和多功能办公室，2~6层为办公室及会议室，每层设有双跑普通楼梯，并要满足防火要求。建筑总高度为19.8m屋面为上人屋面。结构计算部分包括横向水平地震作用下的框架设计和基础设计。在确定框架布局之后，首先进行了重力荷载代表值的计算,利用顶点位移法求出自振周期，按底部剪力法计算水平地震荷载作用，求出在水平荷载作用下的结构内力（弯矩、剪力、轴力）。然后计算竖向荷载（恒载及活荷载）作用下的结构内力，找出最不利的一组或几组内力组合，内力组合在excel表中计算。选取最不利内力的结果计算配筋并绘图。梁的配筋尽量一致，柱的配筋尽量一致。结合本设计结构的实际特点，基础选用柱下筏形基础，楼梯则采用板式楼梯。关键词：机勘大厦；钢筋混凝土；计算ABSTRACTThisdesignisforthebuildingnumber6ofJikanEdifice.Itisthetotalarchitecturalareaisabout4100squaremetersandthestructureofthisbuildingissteelreinforcedconcreteframestructure.Duringthearchitecturaldesignstage,theplanedesign,verticalplanedesign,thecross-sectiondesign,thestairdesign,theroofdesignandarchitectstructurearemade.Sincethisbuildingissteelreinforcedconcreteframestructure,thedesignoftheoffice,meetingroomandotherkindroomswillaffectthedesignofthesecondarybeamandthecalculationofthestructure.Withthetotalheightof19.8meters,this7-floorbuildingisreallylow,thenthecommunicationstairscanmeettherequirements.Theresidentscannotgetontheroofofthebuilding.Thestructuralcalculationanddesignpartincludesthecalculationanddesignofonefloorconcreteplate,frame(namelybeamandcolumn),onestaircaseandfoundation.Whenthedirectionoftheframesisdetermined,firstlytheweightofeachflooriscalculated.Thenthevibratecycleiscalculatedbyutilizingthepeak-displacementmethod,thentheamountofthehorizontalseismicforcecanbegotbywayofthebottom-shearforcemethod.Theseismicforcecanbeassignedaccordingtotheshearingstiffnessoftheframesofthedifferentaxis.Thentheinternalforce(bendingmoment,shearingforceandaxialforce)inthestructureunderthehorizontalloadscanbeeasilycalculated.Afterthedeterminationoftheinternalforceunderthedeadandliveloads,thecombinationofinternalforcecanbemadebyusingtheExcelsoftware,whosepurposeistofindoneorseveralsetsofthemostadverseinternalforceofthewalllimbsandthecoterminousgirders,whichwillbethebasisofprotractingthereinfor