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学习笔记之SAP2000施工模拟应用导向结构

  • 2026-04-03 22:32:56
学习笔记之SAP2000施工模拟应用导向结构
一、“导向结构”基本原理
SAP2000阶段施工工况中的添加结构（Add Structure）功能可以在对应的施工阶段激活相应的结构组。但是新激活结构中已经在之前施工阶段激活的节点会保持变形后的位置，而本施工阶段新激活的节点会位于变形前的位置。所以新激活结构中同时与已激活和新激活节点相连的单元会发生扭曲，这与某些情况下的要求不相符。
SAP2000的v19.2.1版本之后，在阶段施工工况的阶段操作选项中增加了添加导向结构（Add Guide Structure）这个新的选项。添加导向结构（Add Guide Structure）的工作原理是先将其对应组内的结构激活，并指定一个很小的刚度折减系数，且不施加荷载。在后续使用添加结构（Add Structure）激活这些结构时，将这个对应结构的刚度恢复至正常值。使用该功能就实现了新激活的构件中的所有节点均以变形后的位置激活，使结构保持连续不会出现错动。
二、“导向结构”应用实例
大跨度钢桁架整体提升时，需要按照既定的施工顺序进行全过程施工模拟。同时，为进一步减小钢桁架杆件轴向拉力对楼板受力的影响，楼板后装。案例采用SAP2000阶段施工分析实现这一过程，具体阶段施工过程简述如下：

  1. 第1~10步施工左、右两侧的塔楼；

  2. 第11步整体提升钢桁架；

  3. 第12步安装9F楼板；

  4. 第13步安装8F楼板；

  5. 第14步安装屋面楼板；

  6. 第15步施加全楼活荷载；

  • 未采用“导向结构”的阶段施工变形：

第11步竖向变形云图

第12步竖向变形云图

第13步竖向变形云图

第14步竖向变形云图

第15步竖向变形云图

  • 采用“导向结构”的阶段施工变形：

第11步竖向变形

第12步竖向变形

第13步竖向变形

第14步竖向变形

第15步竖向变形

三、小结
新激活结构已经在之前施工阶段激活的节点会保持变形后的位置，而本施工阶段新激活的节点会位于变形前的位置，所以新激活结构中同时与已激活和新激活节点相连的单元会发生扭曲，这与实际施工阶段变形要求不相符。通过采用“导向结构”可以合理解决保持结构变形连续不错动的需求。
参考资料：
筑信达-知识库-CSiBridge-阶段施工模拟-导向结构的原理与应用
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  138. /yingpanguazai/ssd/ssd1/www/no.67808.cn/vendor/topthink/think-template/src/template/contract/DriverInterface.php ( 0.86 KB )
  139. /yingpanguazai/ssd/ssd1/www/no.67808.cn/runtime/temp/6df755f970a38e704c5414acbc6e8bcd.php ( 12.06 KB )
  140. /yingpanguazai/ssd/ssd1/www/no.67808.cn/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000682s ] mysql:host=127.0.0.1;port=3306;dbname=no_67808;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000880s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000321s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000253s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000491s ]
  6. SELECT * FROM `set` [ RunTime:0.000220s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000515s ]
  8. SELECT * FROM `article` WHERE `id` = 468257 LIMIT 1 [ RunTime:0.001820s ]
  9. UPDATE `article` SET `lasttime` = 1775301510 WHERE `id` = 468257 [ RunTime:0.002497s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000213s ]
  11. SELECT * FROM `article` WHERE `id` < 468257 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000592s ]
  12. SELECT * FROM `article` WHERE `id` > 468257 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000387s ]
  13. SELECT * FROM `article` WHERE `id` < 468257 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000783s ]
  14. SELECT * FROM `article` WHERE `id` < 468257 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000725s ]
  15. SELECT * FROM `article` WHERE `id` < 468257 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001425s ]
0.092499s