-3 -
250
250
1000
250
1. 结构选型
根据第五届全国大学生结构设计竞赛委员会提供的赛题，为达到承担竖向荷载和地 震水平动力荷载的目标，并考虑采用竹片制作的现实，本队以节省材料、承载力大、刚度 适合、美观为出发点，经过多次计算分析、实验研究，最终采用以框架斜撑为骨架的塔形 组合格构柱体系，如图 1 所示。
5.1 结点构造说明···························································23 5.2 铁块布置方案···························································23 5.3 水箱注水重量···························································24 6.材料表······································································24
2.3 近似模型 1----组合格构柱体系抗震设计····································6 2.3.1 计算参数··························································7 2.3.2 格构柱分肢长细比验算··············································8 2.3.3 格构柱稳定性强度验算 ·············································8 2.3.4 格构柱的分肢柱稳定性强度验算······································9 2.3.5 缀条（斜杆）验算··················································9
3. 力学有限元软件分析·························································16 3.1 计算建模·······························································16 3.1.1 选型·····························································16 3.1.2 单元模型及其等效荷载·············································18 3.1.3 时间步与地震加速度·············································· 19 3.1.4 单元类型························································ 19 3.1.5 边界条件························································ 19 3.2 计算结果·······························································19 3.3 分析结论·······························································23
2.2 结构各层水平地震作用计算················································3 2.2.1 结构基本周期计算····························2 2.2.2 结构各层水平地震作用计算···········································5
2.1 计算模型与计算参数······················································2 2.1.1 结构模型与抗震计算简图·············································2 2.1.2 计算假设··························································2 2.1.3 相关计算参数·······················································2
-2 -
4. 模型结构设计图·····························································23 5. 结点构造与荷载布置·························································23
第五届全国大学生结构设计与 制作竞赛计算书
-1 -
目录
1. 结构选型····································································1 2. 结构设计····································································2
2.4 近似模型 2----框架--斜撑体系抗震设计····································10 2.4.1 在水平地震作用下框架--斜撑体系内力与侧移计算······················10 2.4.2 在竖向重力荷载作用下框架--斜撑体系内力计算························11 2.4.3 杆件强度验算······················································13