General Design Specification
1.Survey of the buiding This building is an office building named Xing Cheng, which is to be located in the urban area in the city of Changsha.It is used for management, finance, general affairs and technical service.The building has ten stories and one story of basement.
Designing company : Xing Cheng Architecture building design institute Constructiong company : Zhi Peng the corporation of the Art of Architecture Quality monitor : Jian Hua quality controlling company 2.Specification of Architectural Design The total area of this project is 6602.6m2 .The building, with ten stories, the dimension of which is 40.4m × 14.5m , and its total height is 31.5m .Among these ten stories, the height of the sub-story and initial story is 4.2m while the height of the second to the tenth one is 3.0m .The first ground are used to go on finance, The rest are used to handle official and finance businees.Construction Cla : This construction belongs to the first cla building.
Earthquake-resistant intensity of the construction is 7 degree and
Fire-resistance rate of that is the second grade.Waterproof :
roof : the second grade Architectural Decoration : Considering the harmony between this office building and the other ones around, we adopt white ceramic tiles for thesurface of the exterior wall.The surface of the floor is made of Marble in in office room and conference room.The surface of the internal wall is brushed the latex .Waterproof-layer consists of APP modified bitumen membrane
3.Specification of Structural Design The foundation of the building uses independent footing.The difference between the interior level and exterior level is 0.3m . The structure system of this building is Reinforced concrete frame structure.According to 《Code for Seismic Design of Buildings》(GB50011-2001), the grade of the earthquake resistant for the frame structure is the second grade.
Cro section size of the elements : column, 850mm×850mm、600mm×600mm ; frame girder, 300mm×600mm.Disposal of junior beams which cro section size is 300mm×500mm follows vertical direction simply.The thicknees of the roof slab is 120mm while the floor\'s is 100 mm too.The thickne of the shear wall around elevator shaft is 200mm.the walls are made of hollow concrete block.The main method of calculation: the Iteration is used to compute the interior force which under the vertical loads.The interior force which is made by the horizontal loads is calculated by D-value method.Critical materials :
1、Concrete: Foundation-bed
C10
Foundation, foundation beams, beams, boards and column
C30
2、Steel: Reinforcing steel bar is HRB335( fy =300N/mm2)
Stirrup is HPB235 ( fy =210N/mm2)
Reinforcement in girder and shear wall should overlap, which must meet the design requirements.Welding position and anchorage length must conform to what is prescribed in design plan.
Reinforcement cover: Beam
35mm;
Column
40mm;
Board
20mm.Load: Basic wind preure
0.35kN/m2;
Basic snow preure
0.40kN/m2;
Live load of roof
2.0kN/m2;
Live load of floor and hallway
4.5kN/m2.4.Specification of construction organization Utilization of water and electricity at the construction site can be connected from circuit and water pipe net that have existing consummately nearby.Preparation of everything including material and the construction machineries at site should be responsed by construction company.Proper yard arrangement must be made for material.Details of the arrangement can be found in construction plan.This project is high-rise building.During the construction, all measures that make sure security and quality must be paid more attention to and carried out exactly.
Construction methods in detail of every partial project can be found in construction design book.5.Main design norms Code for design of concrete structure (GB50010-2002) Load code for the design of building structure (GB50009-2001) Code for seismic design of buildings (GB50011-2001) Code for design of building foundation (GB50007-2002) Technical specification for concrete structures of tall buildings (JGJ3-2002) Code for acceptance of constructional quality of concrete structures (GB50204-2002) The code of construction project management by enterprises of construction industry
(GB50326-2001) Unifiled standard for constructional quality acceptance of building engineering
(GB50300-2001)
毕业设计摘要
1.项目概况
本工程名为星城商业办公楼，工程选址位于长沙市市区内。本工程是一座集人员管理，金融商贸，事务所和技术服务等功能于一身的综合性商业办公楼，包括地上十层和一层地下室。
设计单位：长沙市星城建筑设计有限公司；
施工单位：长沙市志鹏建筑艺术发展公司；
监理单位：长沙市建华工程建设监理公司。 2.建筑设计部分
本工程总建筑面积6602.6m2，房屋长40.4m，宽度为14.5m；房屋主体高度为31.5m。地下层和首层层高为4.2m，二至十层层高均为3.0m，一楼用于商业活动，其他楼层用于日常办公和商业事务。
本办公楼属于一类建筑，抗震设防烈度为7度，防火等级为二级，屋面防水采用二级防水。
建筑装修：为保证与周围建筑群的和谐一致，满足城市统一规划要求，本建筑外墙采用白色面砖装饰；楼地面装修：办公室、会议室等采用大理石地面；内墙面装饰以粉刷乳胶漆为主；防水层采用APP改性沥青防水卷材。 3.结构设计部分
本工程采用柱下独立基础，室内外高差为0.3m。
本工程结构形式选用钢筋混凝土框架结构，根据《建筑抗震设计规范》 (GB50011-2001)可知，本结构属于二级抗震。
主要构件截面尺寸：柱：850mm×850mm、600mm×600mm；框架梁：300mm×600mm；次梁： 300mm×500mm，仅沿纵向布置；屋面板和楼板的厚度分别为为120mm 及100mm。电梯井周围剪力墙厚200mm，外墙采用陶粒混凝土空心砌块砌筑。
主要计算方法：采用迭代法计算竖向荷载下的结构内力，采用D值法计算横向荷载作用下的结构内力。
主要材料选用：
混凝土：基础垫层采用C10混凝土，其它主要构件均采用C30混凝土；
钢筋：受力纵筋采用HRB335 ( fy =300N/mm2)， 箍筋采用HPB235 ( fy =210N/mm2)。 梁和剪力墙内钢筋的搭接必须满足设计要求；钢筋的焊接位置和锚固长度必须跟设计中的吻合。主要构件保护层厚度： 梁：35mm；柱：40mm；板：20mm。
设计荷载： 基本风压：0.35kN/m2； 基本雪压：0.40kN/m2；屋面活载：2.0kN/m2；楼面活载：4.5kN/m2。 4.施工组织设计部分
施工工地需要的临时水电可以直接利用工地附近已有的电路和自来水网路。施工方应负责对所有建筑材料及施工机械做好充分准备，并修建合适的材料堆场，详见施工平面布置图。
本工程属于高层建筑，因此在施工过程中，要严格保证工程安全和工程质量，制定相关措施并严格执行。
其他各部分详细施工方案和要求见施工组织设计书。 5.设计参考相关规范
《混凝土结构设计规范》(GB50010-2002) 《建筑结构荷载规范》(GB50009-2001) 《建筑抗震设计规范》 (GB50011-2001) 《建筑地基基础设计规范》(GB50007-2002) 《高层建筑混凝土结构技术规程》(JGJ3-2002) 《混凝土结构工程施工质量验收规范》(GB50204-2002) 《建设工程施工项目管理规范》(GB50326-2001) 《建筑工程施工质量验收统一标准》(GB50300-2001)
