
多层钢筋混凝土框架结构住宅楼设计计算书.doc
70页襄樊学院土木工程专业毕业设计 III摘要工程是金光小区2号住宅楼为多层钢筋混凝土框架结构共六层,底层层高3米,其他层层高均为3米建筑物总高度为20.2米本设计书包括如下部分:1.建筑工程工程概况;某市,场地平整,地段交通方便,地势平坦,东西两地均为开发性用地抗震设防要求七度;2.楼盖设计 包括楼板的设计和次梁的设计;3.框架结构布置方鞍及荷载统计;包括结构布置方案及结构选型荷载标准值和计算荷载作用下框架的内力分析4. 框架结构的内力组合包括梁内力组合及柱内力组合;5. 截面设计 包括梁截面设计及柱截面设计6.基础设计通过对基础上的轴力及地基承载力确定基础截面尺寸及配筋7.本设计最终完成十五张施工图关键词:钢筋混凝土,框架,结构设计The Design of a Multi-layer Reinforced Concrete FrameBy Tutor:Civil Engineering department, xiangfan University[Abstract] This is a dwelling building of a university in xiangfan It is a multi-layer reinforced concrete frame. It has six stories, the height of the first storey is 3 meters, and the height of other stories are all 3 meters. The height of the whole building is 20.2 meters.This paper includes the following parts:1. The survey of the program.the program lies in xiangfan ,the land is smooth and the transportation is convenient The degree of earthquake resistance is seven.2. The design of the floor slab. Which include the design of the floor and the beam.3. The calculation of the load and design of the frameWhich include the plan of the arrangement and form of construction, the statistics of standard load and the analysis of internal Force under load 4.the combination of internal forces of the frame.Which include the combination internal forces of the beam and pole 5. the design of SectionWhich include the section design of the beam and pole6. The design of the independent base of pole On the basis of the axial force.and bearing capacity of foundation,to design the section size and reinforcement of foudationThere are 15 structure drawings besides this paper. [Keywords] reinforced concrete, frame, the design of the structure目录摘要 I一.设计概况 11.1 建设项目名称 11.2建设地点 11.3 设计资料 11.3.1地质水文资料 11.3.2气象资料 11.3.3抗震设防要求:七度 11.3.5层室内主要地坪标 1二.屋盖、楼盖设计 22.1楼盖 22.1.1设计资料 22.1.2楼盖的结构平面布置(见图2-1) 22.1.3 板的设计(弹性理论) 32.2次梁的设计 82.2.1次梁l1 82.2.2次梁l2 102.2.3次梁l3 122.2.4次梁l4 132.2.5次梁l5 152.2.6次梁l6 162.2.7次梁l7 18三.框架结构布置方案 193.1结构布置方案及结构选型见图3-1 193.1.1结构承重方案选择 193.1.2主要构件选型及尺寸初步估算 193.2荷载标准值计算 213.2.1 永久荷载 213.2.2 竖向可变荷载 253.2.3风荷载标准值计算 263.2.4 水平地震作用计算 273.3 荷载作用下框架的内力分析 293.3.1恒荷载作用下框架的内力分析 293.3.2活荷载作用下框架的内力计算 323.3.3风荷载作用下内力分析。
363.3.4地震作用下内力分析 38四.内力组合 424.1梁内力组合 424.2柱内力组合 47五.截面设计 525.1梁截面设计 525.1.1正截面受弯承载力计算 525.1.2斜截面受弯承载力计算 545.2柱截面设计 55六 . 基础设计 616.1基础设计 616.2抗冲切检验 626.3配筋计算 63参考文献 63 一.设计概况1.1 建设项目名称某住宅楼建筑结构设计1.2建设地点某市,场地平整,地段交通方便,地势平坦,东西两地均为开发性用地1.3 设计资料1.3.1地质水文资料本建筑场地为二类场地,三级自重湿陷性黄土场地自然地面以下土层依次为:a层:新近堆积黄土,承载力特征值fak(kpa)为100kpa,层厚2.5m左右,本层图自重湿陷量40mm,总湿陷量100mmb层:马兰黄土(一),承载力特征值fak(kpa)为140kpa,层厚10~12m左右,本层土自重湿陷量130mm,总湿陷量280mmc层:马兰黄土(二),承载力特征值fak(kpa)为180kpa,未穿透本层土自重湿陷量70mm,总湿陷量110mm湿陷性土层约为17m。
本场地内无不良环境水文地质条件,地下水位深大于30m地下水对混凝土无腐蚀性1.3.2气象资料风向:常年主导风向为西北风,基本风压400N/m2,年最高温度38℃,最低温度-5℃1.3.3抗震设防要求:七度1.3.4 防火等级:二级1.3.5层室内主要地坪标底层室内主要地坪标高为±0.000,相当于绝对标高31.45m二.屋盖、楼盖设计2.1楼盖2.1.1设计资料1)楼面做法:100mm钢筋混凝土现浇板,20mm石灰砂浆抹底,20mm水泥砂浆找平,水磨石面层 2)材料:混凝土强度等级为C30;梁内受力纵筋为HRB335,其余为HPB235钢筋2.1.2楼盖的结构平面布置(见图2-1)图2-1楼盖的结构平面布置2.1.3 板的设计(弹性理论)1)荷载计算恒荷载标准值:水磨石面层:0.65 kN/m220厚水泥沙浆找平0.02×20=0.4kN/m2100mm钢筋混凝土楼板:0.1×25=2.5kN/m2 20mm厚石灰沙浆抹底:0.01×17=0.34kN/m2小计 3.89 kN/m2 荷载设计值:g=1.2×3.89=4.668 kN/m2 q=1.4×2.5=3.5kN/m2q/2=1.4kN/m2,g+q/2=5.5kN/m2,g+q=6.9kN/m22)弯矩计算计算过程见下页(表2-1)中。
3)截面设计截面有效高度:假定选用Φ8钢筋,则l01方向跨中截面的h01=80-20=60mm;l02方向跨中截面的h02=50mm;支座截面h0=60mm最小配筋率:取ρsmin=0.2%,则Asmin=0.2%×1000×80=160mm2截面设计时取用的弯矩设计值:中间跨的跨中截面及中间支座截面减小20%;边跨跨中截面及楼板边缘算起的第二个支座截面处,当lb/ l0 <1.5时减小20%,当lb/l0=1.5~2.0时减小10%;楼板的角区格不折减4)板的布置图:(见图2-2 ) 图2-2 表2-1弯矩值计算表ABCDEFGHIl01 (m)250027003400290027002900250027003400l02 (m)290041004100440042004400290041004400l01/l020.860.660.770.690.640.660.860.660.77m1(0.0241+0.2×0.0158) ×5.5×2.52+(0.0316+0.2×0.0217) ×1.4×2.52=1.25(0.034+0.2×0.0099) ×5.5×2.72+(0.0295+0.2×0.0642) ×1.4×2.72=1.88(0.0241+0.2×0.0158) ×5.5×3.42+(0.0376+0.2×0.0195) ×1.4×3.42=1.28(0.0326+0.2×0.0109) ×5.5×2.92+(0.0497+0.2×0.014) ×1.4×2.92=2.23(0.0341+0.2×0.0091) ×5.5×2.72+(0.077+0.2×0.0261) ×1.4×2.72=1.28(0.034+0.2×0.0099) ×5.5×2.92+(0.0295+0.2×0.0642) ×1.4×2.92=1.28(0.0241+0.2×0.0158) ×5.5×2.52+(0.0329+0.2×0.0361) ×1.4×2.52=1.28(0.034+0.2×0.0099) ×5.5×2.72+(0.077+0.2×0.065) ×1.4×2.72=2.36(0.0286+0.2×0.0136) ×5.5×3.42+(0.0322+0.2×0.046) ×1.4×3.42=2.69m2(0.00158+0.2×0.0241) ×5.5×2.52+(0.0217+0.2×0.0316) ×1.4×2.52=0.96(0.0099+0.2×0.034) ×5.5×2.72+(0.0642+0.2×0.0345)。












