y******r 发帖数: 2986 | 1 我用STAAD做钢结构分析,发现第2和5根梁(对称)存在抗剪能力不足的问题,可是我
发现这两个梁的剪力都只有大约650kN,而W14x1049梁的实际抗剪能力应该有大约680kN,
所以系数应该小于1(安全)的,可是STAAD计算的结果是这个系数为1.07(不安全)。
本来是很简单的结构,不知道什么地方我的计算没有考虑到,请大家帮忙看看。下面是
STAAD文件命令,谢谢!
STAAD PLANE
START JOB INFORMATION
ENGINEER DATE 21-Mar-13
END JOB INFORMATION
INPUT WIDTH 79
UNIT MMS MTON
JOINT COORDINATES
1 0 1635.6 0; 2 2957.4 1635.6 0; 3 3452.7 1635.6 0; 4 4825.1 0 0;
5 3452.7 -1635.6 0; 6 2957.4 -1635.6 0; 7 0 -1635.6 0; 8 2957.4 0 0;
MEMBER INCIDENCES
1 1 2; 2 2 3; 3 3 4; 4 4 5; 5 5 6;... 阅读全帖 |
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b*******g 发帖数: 1095 | 2 Staad pro的connection design是不是调用的RAM Connection?RAM Connection
Standalone版是可以考虑transfer force的,在staad里不行?
STAAD |
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F**********s 发帖数: 1231 | 3 I have been using SAP2000 for more than 10 years, STAAD.pro for 1 year
STAAD is better than SAP 2000. |
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w***o 发帖数: 1411 | 4 I created a simple staad model for a continous two span beam with uniform
stiffness. Theoretically, changing the beam stiffnes should not affect the
support reactions, since the beam relative stiffness does not change. But
stadd gives different reactions for different beam stiffness. This can not
be correct. What's wrong with stadd here?
Thanks.
This is the code:
STAAD PLANE
START JOB INFORMATION
ENGINEER DATE 29-Jul-10
END JOB INFORMATION
INPUT WIDTH 79
UNIT FEET KIP
JOINT COORDINATES
1 0 0 0; |
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d*******3 发帖数: 1 | 5 请教版上各位大牛,我现设计一个大型重工业钢结构 (Bracing Frame),结构用STAAD
Pro 程序应算,急等出图。因为STAAD不能正确计算节点的 Transfer Load,当前无法
找到其他好的程序计算此部分力,也不能手算(超过一千个荷载组合)。请求版上大牛
提供好的方法计算Transfer Force,好的程序或如果能帮忙计算更好。请提供联系方式
,不甚感谢! |
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z****3 发帖数: 86 | 6 对于钢结构(Brace Frame),梁到柱,梁到梁的连接设计,Transfer Force 是非常重要
的部分设计力,直接影响到结构的安全。如何确定这部分Transfer Force ,是设计的
重要步骤。这部分力,包括梁,柱,垂直brace,和水平brace, 确定最终设计值非常消
耗时间。
当前很多工程师不能正确计算Transfer Force,或不能理解Transfer Force 的产生,误
认为就是梁的轴向力,这是错误的理解,导致错误的设计。
在重工业工程钢结构设计中,STAAD Pro 比较流行,但是这个程序不能正确提供
Transfer Force,直白的说,其提供的结果是错的。但是很多工程师因为不知道基体的
原因,也不知道如何计算,将错就错,仞用STAAD程序提供的结果。就这个问题,我多
次向这个程序公司反应,要求更新。直到现在没有见到任何更正。
为了弥补这部分错误,我针对性的设计了一个 Transfer Force Spreadsheet,用于计算
Transfer Force, 不管多少荷载组合,多大的程序,都能运用,只需要原程序模型就行。
如果谁个人和其公司需要... 阅读全帖 |
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T**9 发帖数: 1528 | 7 Staad 好像被 Bentley 收购, Bentley 是个什么样的公司? 外行没听说过这个公司
是不是基本上 土木的软件 建模都是 based on Grid system? 用惯了 Ansys,
Abaqus, Solidworks 对这不太习惯,对不规则模型。 但是很想要 土木专业软件的
code check 和 计算书。 |
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F**********s 发帖数: 1231 | 8 总的来说,staad运算快,前后处理非常方便, Steel功能强. |
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w***o 发帖数: 1411 | 9 选一个不同W BEAM,STIFFNESS 就不同了。
不过我好像知道怎么回事了,STAAD自动加入了SHEAR DEFORMATION,这是为什么结果跟
用梁理论算出来的不一样。 |
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C*S 发帖数: 1658 | 10 did staad actually consider the combined stress instead? |
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s********r 发帖数: 565 | 11 这个staad的"plane"分析似乎没这么先进吧,估计就是个杆件元而已。
不过这个"plane"分析如果杆件端不release的话,是default刚接的... |
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y******r 发帖数: 2986 | 12 我也相信这就是个杆件单元而已,并且我已经考虑了刚接的影响,其实STAAD本身就会
计算出各个梁的轴力,剪力和弯矩分布图 ,可是我计算的系数还是不够,不知道为什
么了。 |
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z******i 发帖数: 5114 | 13 Did staad give you the corresponding equation for the ratio? |
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y******r 发帖数: 2986 | 14 我没有发现,或许我刚开始使用STAAD,还不知道用什么方程计算得到的,请你帮忙看
看吧,谢谢! |
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z******i 发帖数: 5114 | 15 我们不许用staad, 电脑上的被卸载了 :(
★ 发自iPhone App: ChineseWeb 7.8 |
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n******n 发帖数: 1030 | 16 没用过STAAD,也没用KN算过。
反正简单的看,如果你给出的数值都对,
650/(0.9*680) = 1.062 和你的1.07接近,也许capaciy小于680,那么就更接近1.07了,
我猜想可能是有个0.9的phi factor. |
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y******r 发帖数: 2986 | 17 谢谢楼主的信息,如果你track正确的话(能够告诉我怎么track么?),这个答案就正
确了,是因为翼缘板完全不考虑抗剪能力,但是腹板和翼缘板交界处的fillet面积考虑
在内,所以计算得到这个答案。
W14x1049横截面积32in^2,翼缘板宽度14.6in,厚度0.86in,所以最后抗剪面积为:
As=32-2*14.6*0.86=6.88in^2=4439mm^2
这样我可以解释答案,不过就不知道是否正确了,还是请大牛们确认一下。但是我在
STAAD里面察看design property中的physical property Ay=4850mm^2,好像也是矛盾的!
请大家帮忙看看,谢谢!
area,
7. |
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y******r 发帖数: 2986 | 18 谢谢楼主的信息,如果你track正确的话(能够告诉我怎么track么?),这个答案就正
确了,是因为翼缘板完全不考虑抗剪能力,但是腹板和翼缘板交界处的fillet面积考虑
在内,所以计算得到这个答案。
W14x1049横截面积32in^2,翼缘板宽度14.6in,厚度0.86in,所以最后抗剪面积为:
As=32-2*14.6*0.86=6.88in^2=4439mm^2
这样我可以解释答案,不过就不知道是否正确了,还是请大牛们确认一下。但是我在
STAAD里面察看design property中的physical property Ay=4850mm^2,好像也是矛盾的!
请大家帮忙看看,谢谢!
area,
7. |
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b****d 发帖数: 847 | 19 这个查一下AISC就好了,Table 3-2给的W14x109允许剪力150 kip,勤快点再用Spec里
面公式G2-1和G2-2算算,不对的话那就是STAAD的问题了
的! |
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E*****d 发帖数: 6 | 20 STAAD results:
AY = 44.23 cm^2 = 6.86in^2
FV = 0.4 * 6.86in^2 * 50ksi = 137.2kip
Stress Ratio = 146.83kip/137.2kip = 1.07
My understanding per AISC:
AY = 14.3in (d) * 0.52 in (tw)= 7.5 in^2
FV = 0.4 * 7.5in^2 * 50ksi = 150kip
Stress Ratio = 146.83kip/150kip = 0.98
Please use your own engineering judgement. I do not take any responsibility,
and I are not liable for any damage and/or issues. |
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z******i 发帖数: 5114 | 21 我们都是自己后处理的,用 excel
STAAD
★ 发自iPhone App: ChineseWeb 7.8 |
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T***E 发帖数: 996 | 22 国内一个客户有个海外项目要求用Staad 做钢结构分析 这里有人感兴趣么 |
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T**9 发帖数: 1528 | 23 对,Ram 和 Staad 都被 Bentley 收购了, 似乎 Staad Pro 用得很广泛,但好像3维
键模不是很方便? 看他的说明书都不知道怎么定义 arbitrary grid system. 并且好
像是based on sketch plane, 不能直接定义 3d grid.
Robot Millennium 是法国的好像,刚在 1月份被 Audodesk 收购了,你说的没错
Revit structure 不是分析软件,更像 Telka Structure 那样的详图软件,得跟
Robot Millennium 结合作分析。
看来就 Ram, Staad Pro, Robot Millennium 3个挑一了。 Ram 没用过,不知道能不
能找个trial version. |
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b*******g 发帖数: 1095 | 24 来自主题: CivilEngineering版 - 桩筏基础计算 不是有个staad foundation吗?上面用的是staad pro,基础就用staad foundation不是
正好? |
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d******i 发帖数: 52 | 25 Job description
Company Summary
SNC-Lavalin is one of the leading engineering and construction groups in the
world, and a major player in the ownership of infrastructure and in the
provision of operations and maintenance services. SNC-Lavalin companies
provide engineering, procurement, construction, project management and
project financing services to a variety of industry sectors, including
agrifood, pharmaceuticals and biotechnology, oil & gas, environment, heavy
construction, mass transit, mi... 阅读全帖 |
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d******i 发帖数: 52 | 26 Job description
Company Summary
SNC-Lavalin is one of the leading engineering and construction groups in the
world, and a major player in the ownership of infrastructure and in the
provision of operations and maintenance services. SNC-Lavalin companies
provide engineering, procurement, construction, project management and
project financing services to a variety of industry sectors, including
agrifood, pharmaceuticals and biotechnology, oil & gas, environment, heavy
construction, mass transit, mi... 阅读全帖 |
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T**9 发帖数: 1528 | 27 最备要游说老板买个 土木结构专业软件了,搞大型结构设计 通用软件太不方便了
上次已经请教过 Sap2000 vs Staad Pro
我知道的有
1。Sap2000 (感觉3D frame 比较方便,确实后处理不太好)
2。Etabs (没用过)
3。Staad Pro (也比较容易用,后处理结果写报告方便,不过还不知道怎么定一任意
non-uniform grid system?)
4。Ram Structure system (没用过)
5. Revit Structure ( 刚听说过名字)
钢结构为主,设计完能出 结构设计图, erection drawing 的更好
请多多执教, 希望搞一国行内最广泛,国际通用的设计软件,最好 <$10k :) |
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w********e 发帖数: 7186 | 28 来自主题: CivilEngineering版 - 桩筏基础计算 staad.foundation only checks two way shear, doesn't check one way shear on
slab.
Staad is more popular, Etabs is only for building design. |
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d******i 发帖数: 52 | 29 Job description
Company Summary
SNC-Lavalin is one of the leading engineering and construction groups in the
world, and a major player in the ownership of infrastructure and in the
provision of operations and maintenance services. SNC-Lavalin companies
provide engineering, procurement, construction, project management and
project financing services to a variety of industry sectors, including
agrifood, pharmaceuticals and biotechnology, oil & gas, environment, heavy
construction, mass transit, mi... 阅读全帖 |
|
d******i 发帖数: 52 | 30 Job description
Company Summary
SNC-Lavalin is one of the leading engineering and construction groups in the
world, and a major player in the ownership of infrastructure and in the
provision of operations and maintenance services. SNC-Lavalin companies
provide engineering, procurement, construction, project management and
project financing services to a variety of industry sectors, including
agrifood, pharmaceuticals and biotechnology, oil & gas, environment, heavy
construction, mass transit, mi... 阅读全帖 |
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m*****g 发帖数: 4 | 31 【 以下文字转载自 CivilEngineering 讨论区 】
发信人: markang (brown-eye), 信区: CivilEngineering
标 题: Need - Structural Engineer Position (either entry or senior, steel structural design and analysis)
发信站: BBS 未名空间站 (Fri Nov 21 23:47:38 2014, 美东)
Oil & Gas division of a big corporation in San Antonio, TX.
Job Requirements (minimum):
-- Perform structural design and analysis for steel skid modules, and pipe
racks, processing plants;
-- Good skills with hand calculation and finite element software, preferred
Staa... 阅读全帖 |
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t******o 发帖数: 467 | 32 拉斯维加斯小型结构公司诚聘一名初级结构工程师,绿卡优先,也可以支持H1B申请。
要求和工作内容如下:
1. 土木工程本科或以上学历,结构方向。
2. 大概了解一些结构分析软件,例如SAP2000 或Risa或staad。
3. 对美国建筑规范IBC和ASCE7有一些了解。
4. 会用AutoCAD。
5. 倾向男生,工作需要。
6. 能尽快入职,不能晚于01/01/2017.
7. 辅助高级工程师做结构计算。
8. 辅助资深画图员画图。
有意者请发简历到[email protected]/* */ 谢谢。 |
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h********8 发帖数: 7355 | 33 【 以下文字转载自 LosAngeles 讨论区 】
发信人: waterdance (云中孤雁), 信区: LosAngeles
标 题: Structural engineer job opening
发信站: BBS 未名空间站 (Mon Oct 17 13:47:07 2011, 美东)
今天早上接到的EMAIL, 工作地点是 Costa Mesa, CA。
Oil & gas industry experience will likely be required or a plus, but I'll
verify.
The engineer needs at least 10 years experience, does not need PE
registration but would be a plus for long term employment. Computer skills
STAAD Pro, AutoCAD is a plus. The person needs to be a self starter with
little supervi... 阅读全帖 |
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a*******6 发帖数: 27 | 34 招聘结构工程师 Entry Level Structural Engineer
A design and detailing company in Louisville KY is currently looking for an
Entry Level Structural Engineer, involving design and drafting work.
Training will be provided on related software.
Minimum Requirements:
• Bachelor’s Degree in Civil Engineering, prefer background in
structural engineering
• Knowledgeable in structural steel and structural steel design is a
must
• Excellent written, verbal, and interpersonal skills
• Famili... 阅读全帖 |
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a*******6 发帖数: 27 | 35 招聘结构工程师 Entry Level Structural Engineer
A design and detailing company in Louisville KY is currently looking for an
Entry Level Structural Engineer, involving design and drafting work.
Training will be provided on related software.
Minimum Requirements:
• Bachelor’s Degree in Civil Engineering, prefer background in
structural engineering
• Knowledgeable in structural steel and structural steel design is a
must
• Excellent written, verbal, and interpersonal skills
• Famili... 阅读全帖 |
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a*******6 发帖数: 27 | 36 招聘结构工程师 Entry Level Structural Engineer
A design and detailing company in Louisville KY is currently looking for an
Entry Level Structural Engineer, involving design and drafting work.
Training will be provided on related software.
Minimum Requirements:
• Bachelor’s Degree in Civil Engineering, prefer background in
structural engineering
• Knowledgeable in structural steel and structural steel design is a
must
• Excellent written, verbal, and interpersonal skills
• Famili... 阅读全帖 |
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a*******6 发帖数: 27 | 37 招聘结构工程师 Entry Level Structural Engineer
A design and detailing company in Louisville KY is currently looking for an
Entry Level Structural Engineer, involving design and drafting work.
Training will be provided on related software.
Minimum Requirements:
• Bachelor’s Degree in Civil Engineering, prefer background in
structural engineering
• Knowledgeable in structural steel and structural steel design is a
must
• Excellent written, verbal, and interpersonal skills
• Famili... 阅读全帖 |
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h*****k 发帖数: 85 | 38 正在帮朋友整理简历中国内工作部分。 有如下几个问题
中承式拱桥的标准翻译是 mid-support Arch bridge 吗?
中承式钢管混凝土拱桥呢? mid-support steel-tube (reinforced) concrete arch
bridge?
还有几个问题
在美国这里,关于地震分析,特别是桥梁地震分析和设计,比较常用的书(包括规范)和
软件都哪些? 公司里做桥设计都常用那些软件? STAAD? SAP?
一下问这么多
望不吝赐教。谢谢:) |
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G********e 发帖数: 258 | 39
tie-through arch bridge
(中承式系杆拱桥)
tie-through concrete-filled steel tube arch bridge
和
I don't have the exact idea. sorry.
公司里做桥设计都常用那些软件? STAAD? SAP?
leap, larsa, staadPro, sap2000, etc.
you might visit Florida DOT web site for further softwares. |
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t******o 发帖数: 467 | 40 That will also depend on which software is available at your company.
SAP2000, STAAD, RISA, and ETABS are all good. |
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b*******g 发帖数: 1095 | 41 我们也用pcaColumn,pcaSlab,pcaMats,pcaWall和STAAD。 |
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x**m 发帖数: 44 | 42 想问有人有在这种性质的公司工作的吗?面试一家,主要是用STAAD做结构建模,设计。
公司工资福利还可以,但是不知道工作是否有意思,比起高层建筑的设计来如何?
不过高层建筑的设计公司PAY的不是很高一般。可能是POWER PLANT比较有钱吧。 |
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t******o 发帖数: 467 | 43 That is too hight. I think 70-80K shall be resonable.
Ask attorney to change job description and request prvailing wage again. Do
not put too many advanced skills, do not require special design software (
like SAP2000, RISA,STAAD....). |
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b*****y 发帖数: 196 | 44 I need to set-up an cantilever concrete beam 3D model. Anybody has
experience at this? Please help! |
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T**9 发帖数: 1528 | 45 钢结构设计为主,少量Concrete。似乎看说明 Sap2000 好像功能强点?还是其他更好
的软件?
用传统 FEA 软件设计 结构不是太方便,想鼓吹老板买个structure 的专业软件。
不知道这两个价格如何?
那个软件更常用? 谢谢建议 |
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t******o 发帖数: 467 | 46 Both are expensive.
Sap2000 Advanced is about $8000. |
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T**9 发帖数: 1528 | 47 $8000, 好像还行,比普通有限元软件便宜一半 |
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b*******g 发帖数: 1095 | 49 Ram挺好,他们是做steel起家的,现在被bentley买了。STAAD现在也是Bentley的。
Revit Structure貌似本身不是设计软件,而是实现其他结构设计软件数据共享和与
architecture图同步的桥梁。Robot没用过,好像起源于欧洲,是罗马尼亚或是波兰什
么地方的。 |
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T**9 发帖数: 1528 | 50 今天问了 Bentley 的价格, Ram structure Frame+steel $6000, Staad Pro 才 $
4000, 比我想像的便宜得多阿, 以为要 10K 以上的
不过既然没有 trial version. |
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