{"id":12025,"date":"2022-11-01T19:18:34","date_gmt":"2022-11-01T11:18:34","guid":{"rendered":"http:\/\/www.jdcui.com\/?p=12025"},"modified":"2026-02-18T19:50:32","modified_gmt":"2026-02-18T11:50:32","slug":"%e8%bd%af%e4%bb%b6%e7%ae%97%e4%be%8b-irs%e8%bd%af%e4%bb%b6%e5%8d%95%e8%87%aa%e7%94%b1%e5%ba%a6%e9%9d%9e%e7%ba%bf%e6%80%a7%e5%9c%b0%e9%9c%87%e5%88%86%e6%9e%90%e7%ae%97%e4%be%8b-inelastic-sdof-ear","status":"publish","type":"post","link":"http:\/\/www.jdcui.com\/?p=12025","title":{"rendered":"[\u7a0b\u5e8f\u6848\u4f8b] IRSA \u6848\u4f8b2 \u2014\u2014 \u5355\u81ea\u7531\u5ea6\u975e\u7ebf\u6027\u5730\u9707\u52a8\u529b\u65f6\u7a0b\u5206\u6790 ( IRSA Example 2\u2014 Nonlinear Seismic Dynamic Time History Analysis of SDOF System)"},"content":{"rendered":"

\u5b9e\u5e72\u3001\u5b9e\u8df5\u3001\u79ef\u7d2f\u3001\u601d\u8003\u3001\u521b\u65b0\u3002<\/strong><\/span><\/p>\n

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\u5916\u56fd\u7f51\u53cb\u8ba9\u6211\u5bf9\u00a0IRSA<\/span>\u00a0<\/strong>\u8f6f\u4ef6\u505a\u4e2a\u5355\u81ea\u7531\u5ea6\u5730\u9707\u65f6\u7a0b\u5206\u6790\u5206\u6790\u7684\u4f7f\u7528\u8bf4\u660e\u548c\u7b97\u4f8b\uff0c\u6240\u4ee5\u4e0b\u9762\u8f83\u591a\u82f1\u6587\u4e3a\u4e3b\uff0c\u5927\u6982\u770b\u770b\u3002\u5173\u4e8e\u8fd9\u4e2a\u8f6f\u4ef6\u7684\u4ecb\u7ecd\u53ef\u4ee5\u8bbf\u95ee\u8fd9\u4e2a\u94fe\u63a5\uff1a[\u8f6f\u4ef6][\u5730\u9707\u5de5\u7a0b][\u79d1\u7814][\u66f4\u65b0] IRSA 2022: Inelastic Response Spectra Analysis Program (\u5f39\u5851\u6027\u53cd\u5e94\u8c31\u53ca\u5355\u81ea\u7531\u5ea6\u975e\u7ebf\u6027\u5730\u9707\u5206\u6790\u5de5\u5177)<\/a><\/strong><\/p>\n

[Step 1] \u5bfc\u5165\u5730\u9707\u6ce2 <\/strong>Import Earthquake Acceleration Ground Motion Records<\/strong><\/span><\/h4>\n

\u70b9\u51fb“Import Ground Motion”<\/strong>\u5bfc\u5165\u5730\u9707\u6ce2\uff0cIRSA\u652f\u6301\u4e00\u6b21\u5bfc\u5165\u591a\u7ec4\u5730\u9707\u6ce2\u3002\u5730\u9707\u6ce2\u5bfc\u5165\u540e\uff0c\u53ef\u4ee5\u5728\u201c”Time Series<\/strong>“\u9009\u9879\u5361\u4e0a\u67e5\u770b\u5730\u9707\u6ce2\u7684\u52a0\u901f\u5ea6\u3001\u901f\u5ea6\u3001\u4f4d\u79fb\u65f6\u7a0b\u66f2\u7ebf\u3002\u8f6f\u4ef6\u53ef\u652f\u6301\u5bf9\u5730\u9707\u6ce2\u8fdb\u884c\u57fa\u7ebf\u4fee\u6b63\uff0c\u5982\u679c\u9700\u8981\u4fee\u6b63\uff0c\u53ef\u4ee5\u5728“Type”<\/strong>\u4e0b\u62c9\u83dc\u5355\u9009\u62e9\u5408\u9002\u7684\u4fee\u6b63\u65b9\u6cd5\uff0c\u7136\u540e\u70b9\u51fb “Apply Baseline Correction”<\/strong> \u6309\u94ae\u8fdb\u884c\u57fa\u7ebf\u4fee\u6b63\u3002\u4fee\u6b63\u540e\u7684\u65f6\u7a0b\u66f2\u7ebf\u5728\u56fe\u5f62\u4e2d\u7528\u7070\u8272\u663e\u793a\u3002\u5982\u679c\u6267\u884c\u4e86\u5730\u9707\u6ce2\u57fa\u7ebf\u4fee\u6b63\uff0c\u90a3\u540e\u7eed\u7684\u5206\u6790\u4f1a\u57fa\u4e8e\u57fa\u7ebf\u4fee\u6b63\u540e\u7684\u5730\u9707\u6ce2\u8fdb\u884c\u3002<\/p>\n

Click the “Import Ground Motion”<\/strong> button to import your earthquake acceleration ground motion records. You can import multiple records one time.\u00a0 After the ground motion acceleration is imported, you can check the acceleration, velocity and displacement of the ground motion in the tab “Time Series<\/strong>“;\u00a0 If you discover baseline error in the ground motion, you can select the “type”\u00a0<\/strong>of baseline correction and click the “Apply Baseline Correction”<\/strong> button\u00a0 to do baseline correction to the ground motion. When a ground motion is baseline corrected, the after time history analysis and response spectra analysis will be based on baseline corrected ground motion record, not the original record. The only one thing you need to know is that, baseline correction will affect response spectra analysis and time history analysis results.<\/span><\/p>\n

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[Step 2] \u8bbe\u7f6e\u5206\u6790\u53c2\u6570\u00a0<\/strong>Set Parameters for SDOF Time History Analysis<\/strong><\/span><\/h4>\n

\u70b9\u51fb“Set Parameters”<\/strong> \u6309\u94ae\u8bbe\u7f6e\u65f6\u7a0b\u5206\u6790\u53c2\u6570\u3002\u4e3b\u8981\u5305\u62ec \u7ed3\u6784\u53c2\u6570\u3001\u6750\u6599\u53c2\u6570\u3001\u53ca\u5206\u6790\u53c2\u6570\u4e09\u5927\u7c7b\u3002IRSA\u76ee\u524d\u652f\u6301\u4e09\u79cd\u6750\u6599\uff0c\u5206\u522b\u662f\u7ebf\u6027\u6750\u6599<\/strong>\uff0c\u975e\u7ebf\u6027\u4e8c\u6298\u7ebf\u6ede\u56de\u6750\u6599<\/strong>\u53ca\u56db\u6bb5\u5f0f\u975e\u7ebf\u6027\u6750\u6599<\/strong>\uff08link<\/a>\uff09\u3002\u8bbe\u7f6e\u5b8c\u53c2\u6570\u540e\uff0c\u9700\u8981\u70b9\u51fb\u201cUpdate\u201d<\/strong>\u6309\u94ae\u66f4\u65b0\u53c2\u6570\u3002<\/p>\n

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This tutorial is mainly for SDOF time history analysis, so only parameters related to SDOF analysis is discussed. The other parameters are mainly related to Inelastic Response Spectra Analysis, and will be discussed next time.<\/span><\/p>\n

Click “Set Parameters”<\/strong> Button, and show the below form, only the parameters in red frame are related to SDOF analysis.<\/span><\/p>\n

All the structural parameters have the following meanings:<\/span><\/p>\n

[Mass<\/strong>] \u8d28\u91cf<\/span>: the structural mass<\/span><\/p>\n

[Damping Ratio<\/strong>] \u963b\u5c3c\u6bd4: the damping ratio is used to specify the damping information for the single degree freedom system.<\/span><\/p>\n

[w<\/strong>] \u5706\u9891\u7387<\/span>: w=sqrt( k0 \/ Mass)<\/strong>, circular frequency of free vibration of the structure (radians\/sec). <\/span>In this program,\u00a0 w is calculated by the prgrom automatically , usig k0<\/strong> and Mass.<\/strong><\/span><\/p>\n

[T<\/strong>] \u5468\u671f<\/span>: T = 2*\u03c0\/w<\/strong>\u00a0, period of vibration (sec\/cycle).<\/span><\/p>\n

[Step 3] \u8fd0\u884c\u5206\u6790 <\/strong>Run Time History Analysis<\/strong><\/span><\/h4>\n

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[Step 4] <\/strong>\u67e5\u770b\u5206\u6790\u7ed3\u679c Check Analysis Results<\/strong><\/span><\/h4>\n

IRSA\u63d0\u4f9b\u4ee5\u4e0b13\u79cd\u65f6\u7a0b\u7ed3\u679c\uff1a<\/p>\n

    \n
  1. Displacement [cm]<\/span><\/strong><\/li>\n
  2. Velocity [cm\/sec]<\/span><\/strong><\/li>\n
  3. Acceleration [g]<\/span><\/strong><\/li>\n
  4. Absolute Acceleration [g]<\/span><\/strong><\/li>\n
  5. EK, Dynamic Energy [N*cm]<\/span><\/strong><\/li>\n
  6. ED, Damping Energy [N*cm]<\/span><\/strong><\/li>\n
  7. ES, Elastic Strain Energy [N*cm]<\/span><\/strong><\/li>\n
  8. ER, Total Strain Energy [N*cm]<\/span><\/strong><\/li>\n
  9. Ep, Plastic Energy [N*cm]<\/span><\/strong><\/li>\n
  10. Ei, Input Energy,Ei [N*cm]<\/span><\/strong><\/li>\n
  11. Vp, Plastic Energy Equivalent Velocity [cm\/sec]<\/span><\/strong><\/li>\n
  12. Vd, Damping Energy Equivalent Velocity [cm\/sec]<\/span><\/strong><\/li>\n
  13. Vi, Input Energy Equivalent Velocity [cm\/sec]<\/span><\/strong><\/li>\n<\/ol>\n

    \"\"<\/p>\n

    [Step 5] \u4fdd\u5b58\u5206\u6790\u7ed3\u679c<\/strong>\u00a0Check Analysis Results<\/strong><\/span><\/h4>\n

    \"\"<\/p>\n

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