论文总字数：258900字

摘 要

本工程是位于连云港市灌南县内某金融中心，主体结构为地上15层钢框架剪力墙结构（不包含机房层）。建筑±0.000标高相当于黄海高程5.3000m，室内外高差为0.5m，1层层高6m，2至3层层高4.5m，4至13层层高3.9m，14层层高4.5m，建筑总高58.5m。主体结构采用钢框架剪力墙结构体系。现需对此金融中心进行结构设计。

该建筑层数较高，考虑到建筑的使用功能的同时为了保证其抗震性能并获得较大的布置灵活的室内空间，采用钢框架剪力墙结构，其具有整体性较好，平面布置较灵活，容易满足使用功能需求的优点。该结构采用纵横向框架剪力墙混合承重布置方案，在两个方向均布置主梁来承受楼面荷载，以此获得较大的抗侧刚度和良好的工作性能，结构本身内部布置的剪力墙很好地弥补了框架结构本身抗侧刚度低的缺点，很大程度上减小了地震作用下的结构的层间位移和顶点位移。

根据建筑功能要求，考虑结构受力合理、施工方便，确定结构选型、柱网布置、楼屋盖选型、基础选型；根据跨度和承载力估算框架梁和次梁截面，根据估算的竖向荷载确定柱子截面，楼板用压型钢板作为模板，使用阶段不考虑其作用，按混凝土板设计，次梁简支，按组合梁设计；竖向荷载分为恒载和活载，活荷载仅仅考虑满布于这一榀框架；水平荷载作用包括风荷载和地震作用，采用振型分解反应谱法计算水平地震作用；竖向荷载下的框架内力分析采用分层法，水平荷载作用下的框架内力分析采用D值法；按照规范分别对几种起主要作用的组合方式进行内力组合，选择最不利荷载组合；框架梁按纯钢梁设计，框架柱按一阶方法设计；框架梁和框架柱连接节点为刚接节点，次梁与框架梁的连接节点为铰接节点，框架柱脚按埋入式柱脚设计；楼梯采用折梁式楼梯，梯段梁、踏步板、平台板均按照简支梁模型设计；基础采用桩基，基础连系梁按拉弯构件进行设计。

［关键词］钢框架剪力墙，结构设计，组合梁，振型分解反应谱。

The Steel frame-shear wall structure design of a financial center

05115514 ZHANG Fenghua

Tutor：ZHENG Baofeng

School of Civil Engineering, Southeast University

Abstract

The project is located in a financial center in Guannan County, Lianyungang City. The main structure is a 15-story steel frame shear wall structure (excluding the machine room floor). The building's ±0.000 elevation is equivalent to the Yellow Sea elevation 5.3000m, the indoor and outdoor height difference is 0.5m, the basement panel top elevation is -5.9m, the 1st floor is 6m high, the 2 to 3 layer is 4.5m high, and the 4 to 13 layer is 3.9m high. The 14-storey building is 4.5m high and the total building height is 58.5m. The main structure adopts a steel frame shear wall structure system. There is a need to structure the financial center.

The building has a high number of layers. Considering the function of the building and ensuring its seismic performance and obtaining a large and flexible indoor space, the steel frame shear wall structure is adopted, which has better integrity and flexible layout. It is easy to meet the advantages of using functional requirements. The structure adopts a vertical and horizontal frame shear wall mixed load-bearing arrangement scheme, and the main beam is arranged in two directions to bear the floor load, thereby obtaining large lateral stiffness and good working performance, and the shear force arranged inside the structure itself. The wall well compensates for the shortcomings of the frame structure itself with low lateral stiffness, and greatly reduces the interlayer displacement and vertex displacement of the structure under earthquake action.

According to the functional requirements of the building, considering the reasonable structural force and convenient construction, determine the structure selection, column network layout, roof selection and foundation selection; estimate the frame beam and secondary beam section according to the span and bearing capacity, according to the estimated vertical The column section is determined for the load, and the profiled steel plate is used as the template for the load. The use stage does not consider its effect. According to the concrete slab design, the secondary beam is simply supported and designed according to the composite beam; the vertical load is divided into dead load and live load, and the live load is only Considering the full frame of this raft; the horizontal load includes wind load and earthquake action, and the horizontal seismic action is calculated by the mode decomposition reaction spectrum method; the frame internal force under vertical load is analyzed by the layer method, and the frame under horizontal load The internal force analysis adopts the D value method; according to the specification, several internal combinations of the main functions are combined to select the most unfavorable load combination; the frame beam is designed according to the pure steel beam, the frame column is designed according to the first order method; the frame beam and the frame column are designed. The connecting node is a rigid joint node, the connecting node of the secondary beam and the frame beam is an articulated node, and the frame column foot is designed according to the embedded column foot; The folding beam staircase, the step beam, the tread plate and the platform plate are all designed according to the simple supported beam model; the foundation adopts the pile foundation, and the basic connecting beam is designed according to the bending member.

［Key words］Steel frame-shear wall structure, structural design, composite beam, response spectrum analysis.

目 录

摘要 3

Abstract 4

第一章 结构设计基本资料 1

1.1工程概况 1

1.2 设计资料 1

1.3 设计任务 2

1.4 技术要求 2

第二章 结构选型及布置 4

2.1 结构平面布置 4

2.2 主要构件的截面尺寸估算 4

2.2.1框架柱截面尺寸估算 4

2.2.2次梁截面尺寸估算 5

2.2.3 主梁截面尺寸估算 5

2.2.4 楼板截面尺寸估算 6

第三章 荷载计算 7

3.1 恒荷载 7

3.1.1 楼面恒荷载 7

3.1.2 屋面恒荷载 8

3.1.3 墙体荷载 8

3.1.4 梁自重 9

3.1.5 柱自重 9

3.2 楼面与屋面活荷载 10

3.2.1 楼面活荷载 10

3.2.2 屋面活荷载 10

3.3 雪荷载 10

3.4 风荷载 11

第四章楼盖与屋盖设计 12

4.1 楼盖设计 12

4.1.1 压型钢板施工阶段验算 12

4.1.2 压型钢板使用阶段验算 13

4.1.3 组合梁设计 16

4.2 屋盖设计 22

4.2.1 压型钢板施工阶段验算 22

4.2.2 压型钢板使用阶段验算 23

4.2.3 组合梁设计 26

第五章竖向荷载作用下结构内力计算 32

5.1 计算简图 32

5.2 荷载计算 34

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