几何尺寸与公差论坛------致力于产品几何量公差标准GD&T (GDT:ASME)|New GPS(ISO)研究/CAD设计/CAM加工/CMM测量  


返回   几何尺寸与公差论坛------致力于产品几何量公差标准GD&T (GDT:ASME)|New GPS(ISO)研究/CAD设计/CAM加工/CMM测量 » 三维空间:产品设计或CAX软件使用 » CAD设计 » 产品功能分析
用户名
密码
注册 帮助 会员 日历 银行 搜索 今日新帖 标记论坛为已读


回复
 
主题工具 搜索本主题 显示模式
旧 2009-09-10, 09:44 AM   #1
huangyhg
超级版主
 
huangyhg的头像
 
注册日期: 04-03
帖子: 18592
精华: 36
现金: 249466 标准币
资产: 1080358888 标准币
huangyhg 向着好的方向发展
默认 lateral loads for mezzanine

lateral loads for mezzanine?
other than seismic, what other lateral loads would you consider for a mezzanine? the mezzanine will be used as a gym with stationery bicycles and running pads.
check out our whitepaper library.
i would not consider any other lateral loads, but i would check the floor system for vibration, if you are using concrete topping on steel deck on steel joists or beams.
daveatkins
you might want to design it for some nominal lateral loading. interior partition walls are typically designed for 5 psf. that might be a good place to start.
i agree with taro about using 5 psf lateral. a small percent of the column load, say 1% or 2%, might also give you some kind of number to deign with.
in the uk, code requirements state you must allow a horizontal load of 0.5% minimum of the applied dead + imposed load acting simultaneously with gravity loads.
the purpose is to ensure a robust structure and allow for practical difficulties such as lack of fit and out of plumb.
the difficulty with assuming unit loads applied horizontally is that the floor system has a relatively low surface area which will attract little load.
i would only consider seismic. i would expect that to be larger than any other lateral load you can come up with. i also would check for vibration. mezzanines can present a vibration problem.
for multi-storey buildings the australian standard as4100 steel structures specifies a notional horizontal force of 0.002 times the total design vertical loads at a floor level, applied at that floor level. it is considered to act in conjunction with the dead and live loads for the strength and serviceability limit states.
the intent is to ensure a minimum resistance to lateral drift in both braced and unbraced frames.
whilst your mezzanine floor is hardy a multi-storey building, the notional horizontal force is a sound principle for ensuring the robustness of the structure.
as/nzs 1170.0, structural design actions, has the following requirement for robustness;
"6.2.2 minimum resistance
the structure shall have a minimum lateral resistance equivalent to 2.5 percent of (g + ?cq) for each level, applied simultaneously at each level for a given direction.
the direction of application of the lateral load shall be that which will produce the most critical action effect in the element under consideration, except that the application of this load in more than one direction simultaneously need not be considered in the design of any
element."
g = dead load, q = live load, ?c = combination factor (=0.4 normally, 0.6 for storage etc.)
__________________
借用达朗贝尔的名言:前进吧,你会得到信心!
[url="http://www.dimcax.com"]几何尺寸与公差标准[/url]
huangyhg离线中   回复时引用此帖
GDT自动化论坛(仅游客可见)
回复


主题工具 搜索本主题
搜索本主题:

高级搜索
显示模式

发帖规则
不可以发表新主题
不可以回复主题
不可以上传附件
不可以编辑您的帖子

vB 代码开启
[IMG]代码开启
HTML代码关闭

相似的主题
主题 主题发起者 论坛 回复 最后发表
lateral load resistance of slab on metal deck huangyhg 产品功能分析 0 2009-09-10 09:42 AM
intl bldg code wind loads huangyhg 产品功能分析 0 2009-09-09 09:19 PM
fea on conrete slab - use real loads or factored loads huangyhg 产品功能分析 0 2009-09-09 11:24 AM
equivalent frame for rc column design loads huangyhg 产品功能分析 0 2009-09-08 10:48 PM
are asce 7-02 wind loads ultimate or service level huangyhg 产品功能分析 0 2009-09-07 12:46 PM


所有的时间均为北京时间。 现在的时间是 12:56 PM.


于2004年创办,几何尺寸与公差论坛"致力于产品几何量公差标准GD&T | GPS研究/CAD设计/CAM加工/CMM测量"。免责声明:论坛严禁发布色情反动言论及有关违反国家法律法规内容!情节严重者提供其IP,并配合相关部门进行严厉查处,若內容有涉及侵权,请立即联系我们QQ:44671734。注:此论坛须管理员验证方可发帖。
沪ICP备06057009号-2
更多