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免费下载 | 支管直接焊于主管的补强计算书

  • 2026-07-21 20:00:07
免费下载 | 支管直接焊于主管的补强计算书
支管直接焊于主管补强计算数据表(GB/T20801.1版) 
编制依据:GB/T20801.1-2025  等面积补强法; 
适用范围:主管直接开孔焊接无缝支管 
文件包含:参数录入、自动计算、打印计算书、国标案例对照 
之前写过一个文章,收藏 | 管道开孔补强到底要不要算?90%的设计都纠结过,但没有给出具体的表格,这次在已有基础上做了一个计算表格。各位在看看。有没有错误的地方,查缺补漏,一起完善。

以下面这个为例:外 径 D=219 mm、壁 厚T=8 mm 的 油 品 主 管 上 有 一 垂 直 支 管,支 管 外 径 D=114 mm,壁 厚T=6.3mm,主管和支管材料都是15CrMo无缝钢管,见图 K.1,设计压力P=2 MPa,设计温度t=200 ℃,接管处填角焊缝符合7.4.8和图23a)规定的最小尺寸要求,取腐蚀裕量C2=2.5mm。试问该管件是否需要另加补强?

使用表格技术壁厚数值和案例教程计算出壁厚数值做个对比:主管1.819mm,支管0.947mm。

其中A4=0,算出补强合格,故不需要补强圈。关于A5焊缝截面积的计算结果,

表格有不对的地方大家下载后在优化修改一下,因为数据处理有的差浮点,规范上取值小数点不一致,但大致的结果一致。

主管开孔焊接支管会削减压壁承载截面,环向、轴向应力集中系数上升,等面积补强核心准则为开孔削减多少金属截面积,就在有效补强区域补足同等有效金属面积,是国内压力管道、石化管道通用强制校核方法。 

可利用补强金属分为三部分: 主管名义壁厚扣除计算厚度、腐蚀 / 负偏差后的富余金属面积; 支管伸入补强有效区的富余壁厚金属面积; 支管与主管连接全焊透角焊缝有效截面积。 三者相加总面积≥开孔所需补强面积 A₀,方可判定无需增设补强圈;反之必须配套补强圈、加厚主管短节或更换锻制支管座。

GC1级管道很少用补强圈的形式。工程默认采用整体管件形式。

关于表格下载可以在知识库下载。GBT20801.1-2025管道壁厚计算及开孔补强.xlsx

链接: //pan.baidu.com/s/1b8v_cIMFA3IKnWqRgNO71Q?pwd=pipe 提取码: pipe(自行不全前面的https)

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  134. /yingpanguazai/ssd/ssd1/www/yeyulingfeng.com/vendor/topthink/think-view/src/Think.php ( 8.38 KB )
  135. /yingpanguazai/ssd/ssd1/www/yeyulingfeng.com/vendor/topthink/framework/src/think/contract/TemplateHandlerInterface.php ( 1.60 KB )
  136. /yingpanguazai/ssd/ssd1/www/yeyulingfeng.com/vendor/topthink/think-template/src/Template.php ( 46.61 KB )
  137. /yingpanguazai/ssd/ssd1/www/yeyulingfeng.com/vendor/topthink/think-template/src/template/driver/File.php ( 2.41 KB )
  138. /yingpanguazai/ssd/ssd1/www/yeyulingfeng.com/vendor/topthink/think-template/src/template/contract/DriverInterface.php ( 0.86 KB )
  139. /yingpanguazai/ssd/ssd1/www/yeyulingfeng.com/runtime/temp/8ef20ebb20ac8b82ec5232b0bcb62051.php ( 11.99 KB )
  140. /yingpanguazai/ssd/ssd1/www/yeyulingfeng.com/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000765s ] mysql:host=127.0.0.1;port=3306;dbname=no_yeyulingfeng;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001059s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.057561s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.050153s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000960s ]
  6. SELECT * FROM `set` [ RunTime:0.023825s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001347s ]
  8. SELECT * FROM `article` WHERE `id` = 486363 LIMIT 1 [ RunTime:0.130581s ]
  9. UPDATE `article` SET `lasttime` = 1784653408 WHERE `id` = 486363 [ RunTime:0.000847s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.036876s ]
  11. SELECT * FROM `article` WHERE `id` < 486363 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.044490s ]
  12. SELECT * FROM `article` WHERE `id` > 486363 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.030686s ]
  13. SELECT * FROM `article` WHERE `id` < 486363 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.464887s ]
  14. SELECT * FROM `article` WHERE `id` < 486363 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.101411s ]
  15. SELECT * FROM `article` WHERE `id` < 486363 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.473889s ]
1.536203s