https://communities.bentley.com/communities/other_communities/chinafirst/w/chinawiki/50943/spanen-USTelligent Community 12https://communities.bentley.com/communities/other_communities/chinafirst/w/chinawiki/50943/spanThu, 13 Aug 2020 10:30:35 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:21635423-394a-451f-a113-7b5828001cd9Qiang Hehttps://communities.bentley.com/communities/other_communities/chinafirst/w/chinawiki/50943/span#commentsCurrent Revision posted to 技术资料库 by Qiang He on 8/13/2020 10:30:35 AM<br /> <p>当杆件存在offset时，报告&lsquo;SPAN DEFLECTION SUMMARY REPORT&rsquo;中的位移结果和报告&lsquo;JOINT DEFLECTIONS AND ROTATIONS&lsquo;中的位移结果有可能不一致。这是因为span的参照坐标系为杆件的局部坐标系，不受杆件offset的影响，而节点位移所参照的坐标系为结构的总体坐标系，会考虑杆件OFFSET的影响。</p> <p>比如下图中一个做过偏移的杆件，受到绕杆件轴向的扭矩的作用，这个时候杆件端点本身在杆件局部坐标Y,Z，方向上的位移为0，然而节点会由于杆件转动而发生位移。</p> <p>节点位移报告中0001的位移：</p> <p><img src="/resized-image/__size/640x480/__key/communityserver-wikis-components-files/00-00-00-04-10/pastedimage1597314632453v1.png" alt=" " /></p> <p>SPAN位移报告中的位移：</p> <p><img src="/resized-image/__size/640x480/__key/communityserver-wikis-components-files/00-00-00-04-10/pastedimage1597314654887v2.png" alt=" " /></p> <div style="clear:both;"></div>