https://communities.bentley.com/communities/other_communities/chinafirst/w/chinawiki/50937/eften-USTelligent Community 12https://communities.bentley.com/communities/other_communities/chinafirst/w/chinawiki/50937/eftThu, 13 Aug 2020 08:19:16 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:ca27f8c6-1c63-492a-954d-4bd14a4358a7Qiang Hehttps://communities.bentley.com/communities/other_communities/chinafirst/w/chinawiki/50937/eft#commentsCurrent Revision posted to 技术资料库 by Qiang He on 8/13/2020 8:19:16 AM<br /> <p>FTOPT中第75列考虑SCF计算的弦杆长度在默认条件下取节点两边的杆件长度和的一半，当考虑整个杆件长度的时候，就直接以节点两边的弦杆长度的和作为SCF的计算长度。这里的弦杆长度和节点强度校核的joint can length是两个不同的概念。</p> <p><img src="/resized-image/__size/640x480/__key/communityserver-wikis-components-files/00-00-00-04-10/pastedimage1597306609458v1.png" alt=" " /></p> <p>Efthymiou方法中，API规范所给只有几何参数图示（如下图），这和节点强度校核的示意图是很不相同的，对L值如何考虑没有明确的说明，更没有提到加厚段的事情。对此我理解是需要工程师自行判断那种方式考虑弦杆长度。</p> <p><img src="/resized-image/__size/640x480/__key/communityserver-wikis-components-files/00-00-00-04-10/pastedimage1597306648442v2.png" alt=" " /></p> <p>对于应力集中系数计算的条件参见list文件中STRESS CONCENTRATION FACTOR VALIDITY EXCEEDANCE 报告，比如alpha值的上下限。</p> <p></p> <p><img src="/resized-image/__size/640x480/__key/communityserver-wikis-components-files/00-00-00-04-10/pastedimage1597306673893v3.png" alt=" " /></p> <p></p> <p></p> <div style="clear:both;"></div>