【摘 要】:
本工程为宣化县一中教学楼工程,采用框架结构,主体为六层,本地区抗震设防烈度为7度抗震,场地类别为II类场地。主导风向为西北,基本风压0.55KN/M,基土本雪压0.25 KN/M。楼﹑屋盖均采用现浇钢筋混凝土结构。
本设计贯彻“实用、安全、经济、美观”的设计原则。按照建筑设计规范,认真考虑影响设计的各项因素。根据结构与建筑的总体与细部的关系。
本设计主要进行了结构方案中横向框架第9轴抗震设计。在确定框架布局之后,先进行了层间荷载代表值的计算,接着利用顶点位移法求出自震周期,进而按底部剪力法计算水平地震荷载作用下大小,进而求出在水平荷载作用下的结构内力(弯矩、剪力、轴力)。接着计算竖向荷载(恒载及活荷载)作用下的结构内力。是找出最不利的一组或几组内力组合。 选取最安全的结果计算配筋并绘图。此外还进行了结构方案中的室内楼梯的设计。完成了平台板,梯段板,平台梁等构件的内力和配筋计算及施工图绘制。对楼板进行了配筋计算,本设计采用桩基础,对基础承台和桩进行了受力和配筋计算。
整个结构在设计过程中,严格遵循相关的专业规范的要求,参考相关资料和有关最新的国家标准规范,对设计的各个环节进行综合全面的科学性考虑。总之,适用、安全、经济、使用方便是本设计的原则。设计合理可行的建筑结构方案是现场施工的重要依据。
【关键词】: 框架结构,抗震设计,荷载计算,内力计算,计算配筋
Xuanhua County in a teaching building
【ABSTRACT】:
This works for the Xuanhua County in a teaching building works, a framework structure for a six-storey main, in the region earthquake intensity of 7 degrees near Land site classification as Class II venues. Led to the Northwest direction, the basic Pressure 0.55 KN / M, basic snow pressure 0.25KN/M. Floor roof were using cast-in-place reinforced concrete structure.
The design and implement "practical, security, economic, aesthetic," the design principles. With the architectural design, design seriously consider the influence of the various factors. According to the structural and architectural detail and the overall relationship.
The design of the main structure of the program horizontal framework 9-axis seismic design. In determining the distribution framework, the first layer of representative value of the load, Then use vertex from the displacement method for earthquake cycle, and then at the bottom of shear horizontal seismic load calculation under size, then calculated the level of load under the Internal Forces (bending moment, shear and axial force). Then calculate vertical load (constant load and live load) under the Internal Forces. Identify the most disadvantaged group or an internal force several combinations. Select the best safety results of the reinforcement and Mapping. In addition, the structure of the program indoor staircase design. Completion of the platform boards, boards of the ladder, platform beam component and the reinforcement of internal forces calculation and construction mapping. On the floor reinforcement calculation, the use of pile foundation design, foundation and pile caps for the force and reinforcement calculation.
The whole structure of the design process, in strict compliance with the relevant professional standard, reference to relevant information and the latest national standards and specifications, and design of the various components of a comprehensive scientific considerations. In short, application, security, economic and user-friendly design is the principle. Design reasonable and workable structure of the program is the construction site of the important basis for the construction.
【KEY】:
WORDS:Frame Structure,Seismic Design ,Load Calculation, Internal force calculation, Calculation reinforcement
目 录
第一部分:工程概况…………………………………………………………1
第二部分:工程做法…………………………………………………………5
第三部分:荷载统计 ………………………………………………………12
第四部分:各层重力代表值计算 ………………………………………23
第五部分:水平荷载作用下框架的内力分析 ………………………21
框架梁、柱线刚度计算 ………………………………………………………21
横向自振周期计算 ………………………………………………………………22
水平地震作用及楼层地震剪力计算 …………………………………………24
多遇水平地震作用下位移验算 …………………………………………………26
水平地震作用下框架内力计算 …………………………………………………26
第六部分:重力荷载作用下结构内力分析 …………………………31
计算单元的选择确定 ……………………………………………………………31
荷载作用下结构内力计算 ……………………………………………………33
重力荷载作用下固端弯矩计算 ……………………………………………42
框架节点分配系数计算 ………………………………………………………42
重力荷载作用下的最大弯矩计算 ………………………………………………43
弯矩传递与分配 …………………………………………………………………44
梁端弯矩设计值的调整 …………………………………………………………49
梁端剪力组合和设计值的调整 …………………………………………………50
第七部分:框架结构内力组合 …………………………………………56
横向框架梁内力组合 ……………………………………………………………56
框架柱的内力组合 ………………………………………………………………58
第八部分:截面设计 ………………………………………………………61
框架柱 …………………………………………………………………………61
框架梁 …………………………………………………………………………67
第九部分:楼板设计 ……………………………………………………69
楼板类型及设计方法的选择 …………………………………………………69
顶层屋面板设计 …………………………………………………………………69
标准层楼面板设计 ………………………………………………………………73
第十部分:楼梯设计 ……………………………………………………78
楼梯板计算 ………………………………………………………………………78
平台板计算 ………………………………………………………………………79
平台梁计算 ………………………………………………………………………80
第十一部分:雨蓬设计 ……………………………………………………82
雨蓬板设计 ………………………………………………………………………82
雨蓬梁设计 ………………………………………………………………………83
雨蓬柱设计 ………………………………………………………………………86
第十二部分:基础设计 ……………………………………………………88
边柱基础设计 …………………………………………………………………88
中柱基础设计 ………………………………………………………………… 94