{"id":89,"date":"2025-05-20T23:06:22","date_gmt":"2025-05-20T15:06:22","guid":{"rendered":"http:\/\/www.structurevspoem.com\/?p=89"},"modified":"2025-05-20T23:14:32","modified_gmt":"2025-05-20T15:14:32","slug":"%e5%bc%b9%e5%a1%91%e6%80%a7%e5%88%86%e6%9e%90%e7%9a%84%e4%b8%80%e4%ba%9b%e6%80%9d%e8%80%83reflections-on-nonlinear-time-history-analysis","status":"publish","type":"post","link":"http:\/\/www.structurevspoem.com\/?p=89","title":{"rendered":"\u5f39\u5851\u6027\u5206\u6790\u7684\u4e00\u4e9b\u601d\u8003Reflections on Nonlinear Time History Analysis"},"content":{"rendered":"
\n

\u65e7\u6587\u91cd\u53d1\uff0c\u672c\u6587\u662f\u5bf9\u5f39\u5851\u6027\u5206\u6790\u4e00\u4e9b\u60f3\u6cd5\u7684\u68b3\u7406\u3002\u5373\u5c06\u5954\u56db\uff0c\u5bf9\u7ed3\u6784\u7684\u70ed\u60c5\u4f9d\u7136\u672a\u51cf\uff0c\u4f46\u5199\u6587\u7684\u65f6\u95f4\u8d8a\u6765\u8d8a\u5c11\uff0c\u4e14\u5199\u4e14\u73cd\u60dc\u3002\u7ecf\u8fc7\u7814\u7a76\u751f\u8bfe\u9898\u7814\u7a76\u3001\u63a5\u8fd1\u5341\u591a\u5e74\u5de5\u7a0b\u5b9e\u8df5\u7ecf\u9a8c\uff0c\u4e00\u4e9b\u60f3\u6cd5\u4e5f\u53d1\u751f\u4e86\u53d8\u5316\u3002\u5199\u4e86\u51e0\u70b9\u601d\u8003\uff0c\u4f9b\u4e5f\u6709\u540c\u6837\u601d\u8003\u7684\u670b\u53cb\u4e00\u8d77\u4ea4\u6d41\u3002\u5305\u542b2013\u5e74\u7684\u65e7\u601d\u4e0e2022\u5e74\u7684\u6700\u65b0\u53cd\u601d\u3002<\/p>\n<\/blockquote>\n

\n
\"Author's<\/figure>\n
\n
<\/div>\n<\/div>\n
\n
1. \u52a8\u529b\u5f39\u5851\u6027\u65f6\u7a0b\u5206\u6790 vs \u9759\u529bPushover\u5206\u6790\uff1a\u54ea\u4e2a\u66f4\u51c6\u786e\uff1f<\/h5>\n

\u4e00\u90e8\u5206\u4eba\u8ba4\u4e3a\uff0c\u65f6\u7a0b\u5206\u6790\u91c7\u7528\u5730\u9707\u6ce2\uff0c\u800c\u5730\u9707\u6ce2\u7684\u79bb\u6563\u6027\u5927\uff0c\u4e0d\u540c\u5730\u9707\u6ce2\u53ef\u80fd\u5bfc\u81f4\u7ed3\u679c\u5dee\u5f02\u663e\u8457\uff1b\u800cPushover\u5206\u6790\u907f\u514d\u4e86\u5730\u9707\u6ce2\u79bb\u6563\u6027\u95ee\u9898\uff0c\u56e0\u6b64\u66f4\u7cbe\u786e\u3002\u53e6\u4e00\u90e8\u5206\u4eba\u5219\u6307\u51fa\uff1a<\/p>\n

    \n
  • Pushover\u4e3b\u8981\u8003\u8651\u7b2c\u4e00\u9636\u632f\u578b\uff0c\u53ef\u80fd\u5ffd\u7565\u9ad8\u9636\u632f\u578b\u5f71\u54cd\uff1b<\/li>\n
  • \u9759\u529b\u65b9\u6cd5\u8bc4\u4f30\u52a8\u529b\u95ee\u9898\u5b58\u5728\u7406\u8bba\u5c40\u9650\u6027\u3002<\/li>\n<\/ul>\n

    \u5b9e\u9645\u5206\u6790\u4e2d\u901a\u5e38\uff1a<\/p>\n

      \n
    1. \u5148\u505a\u5f39\u5851\u6027\u52a8\u529b\u65f6\u7a0b\u5206\u6790\uff1b<\/li>\n
    2. \u518d\u7528Pushover\u5206\u6790\u5bf9\u6bd4\u9a8c\u8bc1\u3002<\/li>\n<\/ol>\n

      \u7ed3\u8bba<\/strong>\uff1a\u5f39\u5851\u6027\u5206\u6790\u590d\u6742\u4e14\u9700\u7efc\u5408\u5224\u65ad\uff0c\u80fd\u63ed\u793a\u7ed3\u6784\u8584\u5f31\u73af\u8282\u5e76\u8f85\u52a9\u8bbe\u8ba1\u51b3\u7b56\u7684\u65b9\u6cd5\u5373\u4e3a\u597d\u65b9\u6cd5\u3002<\/p>\n

      \n
      \"Pushover<\/figure>\n
      \n
      PushOver\u5206\u6790\u57fa\u672c\u539f\u7406\uff08\u56fe\u7247\u6e90\u81ea\u7f51\u7edc\uff09<\/div>\n<\/div>\n
      \n
      2. \u662f\u5426\u5b58\u5728\u5b8c\u7f8e\u7684\u5f39\u5851\u6027\u5206\u6790\u8f6f\u4ef6\uff1f<\/h5>\n

      \u7406\u60f3\u4e3b\u4e49\u8005\u7684\u56f0\u5883<\/strong>\uff1a<\/p>\n

        \n
      • ABAQUS\uff1a\u529f\u80fd\u5f3a\u5927\u4f46\u5b66\u4e60\u6210\u672c\u9ad8\uff1b<\/li>\n
      • PERFORM-3D\uff1a\u4e13\u6ce8\u7ed3\u6784\u5de5\u7a0b\u4f46\u754c\u9762\u4e0d\u591f\u53cb\u597d\u3002<\/li>\n<\/ul>\n
        \n

        \u6bd4\u55bb\uff1a\u5982\u540c\u9009\u62e9\u4f34\u4fa3\uff0c\u5b8c\u7f8e\u5373\u610f\u5473\u7740\u4e0d\u5b8c\u7f8e\u3002\u8f6f\u4ef6\u65e0\u60c5\u4eba\u6709\u60c5\u2014\u2014\u5584\u7528\u4f18\u52bf\uff0c\u63a5\u53d7\u4e0d\u8db3\u3002<\/p>\n<\/blockquote>\n

        \n
        \"Plastic<\/figure>\n
        \n
        \u5e38\u7528\u5f39\u5851\u6027\u5206\u6790\u8f6f\u4ef6<\/div>\n<\/div>\n
        \n
        3. \u9700\u8981\u8ffd\u6c42”\u7cbe\u786e\u5efa\u6a21”\u5417\uff1f<\/h5>\n

        \u4e24\u79cd\u6781\u7aef<\/strong>\uff1a<\/p>\n

          \n
        • \u7406\u60f3\u4e3b\u4e49\u8005\uff1a\u8ffd\u6c42”\u5fb7\u667a\u4f53\u7f8e\u52b3”\u5168\u9762\u53d1\u5c55\u7684\u6a21\u578b\uff1b<\/li>\n
        • \u73b0\u5b9e\u4e3b\u4e49\u8005\uff1a\u91cd\u89c6\u6574\u4f53\u6027\u80fd\u800c\u975e\u7ec6\u8282\u7cbe\u786e\u3002<\/li>\n<\/ul>\n

          \u6838\u5fc3\u89c2\u70b9<\/strong>\uff1a<\/p>\n

            \n
          • \u8ba1\u7b97\u5fc5\u7136\u5b58\u5728\u5047\u8bbe\uff0c\u5047\u8bbe\u5373\u975e\u771f\u5b9e\uff1b<\/li>\n
          • \u7ed3\u6784\u5de5\u7a0b\u5bb9\u8bb8\u8bef\u5dee\u5927\u4e8e\u673a\u68b0\u5de5\u7a0b\uff1b<\/li>\n
          • \u5173\u952e\u5728\u4e8e\u628a\u63e1\u6574\u4f53\u6027\u80fd + \u91cd\u70b9\u6784\u4ef6\u5206\u6790\u3002<\/li>\n<\/ul>\n
            \n
            \"Simplified<\/figure>\n
            \n
            \u56fd\u5916\u67d0\u9879\u76ee\u7b80\u5316\u540e\u53ea\u5269\u5916\u4fa7\u6297\u5f2f\u6846\u67b6<\/div>\n<\/div>\n
            \n
            4. \u5982\u4f55\u9ad8\u6548\u5b66\u4e60\u5f39\u5851\u6027\u5206\u6790\u8f6f\u4ef6\uff1f<\/h5>\n

            \u5206\u4e09\u9636\u6bb5\u8fdb\u9636\uff1a<\/p>\n

              \n
            1. \u64cd\u4f5c\u638c\u63e1\u671f<\/strong>\uff1a
              \n"\u8f6f\u4ef6\u8650\u4f60\u5343\u767e\u904d\uff0c\u4f60\u5f85\u8f6f\u4ef6\u5982\u521d\u604b"<\/code><\/li>\n
            2. \u539f\u7406\u7406\u89e3\u671f<\/strong>\uff1a
              \n"\u9769\u547d\u5c1a\u672a\u6210\u529f\uff0c\u540c\u5b66\u4ecd\u9700\u52aa\u529b"<\/code> \n
                \n
              • \u638c\u63e1\u7b97\u6cd5\u539f\u7406\u3001\u5047\u8bbe\u6761\u4ef6\u3001\u4f18\u7f3a\u70b9<\/li>\n<\/ul><\/li>\n
              • \u5de5\u7a0b\u5b9e\u8df5\u671f<\/strong>\uff1a
                \n"\u8863\u5e26\u6e10\u5bbd\u7ec8\u4e0d\u6094"<\/code> \n
                  \n
                • \u9700\u8010\u5fc3\u7ec6\u81f4\u89e3\u51b3\u5b9e\u9645\u95ee\u9898<\/li>\n<\/ul><\/li>\n<\/ol>\n
                  \n
                  \"Revolutionary<\/figure>\n
                  \n
                  \u9769\u547d\u6807\u8bed\uff08\u7f51\u7edc\u56fe\u7247\uff09<\/div>\n<\/div>\n
                  \n
                  5. \u5f39\u5851\u6027\u5206\u6790\u7684\u5fc5\u8981\u6027<\/h5>\n

                  \u9002\u7528\u573a\u666f\uff1a<\/p>\n

                    \n
                  • \u8d85\u9650\u9ad8\u5c42\u6216\u4e0d\u89c4\u5219\u7ed3\u6784\uff1b<\/li>\n
                  • \u65b0\u578b\u6297\u9707\u4f53\u7cfb\/\u521b\u65b0\u8bbe\u8ba1\uff1b<\/li>\n
                  • \u4f7f\u7528\u975e\u89c4\u8303\u6750\u6599\/\u51cf\u9694\u9707\u88c5\u7f6e\uff1b<\/li>\n
                  • \u9700\u5b9e\u73b0\u8d85\u9884\u671f\u6027\u80fd\u76ee\u6807\u3002<\/li>\n<\/ul>\n

                    \u51b3\u7b56\u4f9d\u636e<\/strong>\uff1a\u9879\u76ee\u590d\u6742\u5ea6 \u00d7 \u8bbe\u8ba1\u521b\u65b0 \u00d7 \u4e1a\u4e3b\u6027\u80fd\u9700\u6c42<\/p>\n

                    \n
                    \u7ed3\u8bed\u4e0e\u5c55\u671b<\/h5>\n

                    \u6838\u5fc3\u89c2\u70b9<\/strong>\uff1a\u5206\u6790\u662f\u624b\u6bb5\uff0c\u8bbe\u8ba1\u624d\u662f\u76ee\u7684\u3002<\/p>\n

                      \n
                    • \u5e38\u89c4\u7ed3\u6784\u65e0\u9700\u8fc7\u5ea6\u4f7f\u7528\u5f39\u5851\u6027\u5206\u6790\uff1b<\/li>\n
                    • \u6ee5\u7528\u503e\u5411\u9700\u8b66\u60d5\uff0c\u89c4\u8303\u8981\u6c42\u4e5f\u5e94\u8fa9\u8bc1\u770b\u5f85\u3002<\/li>\n<\/ul>\n

                      \u672a\u6765\u5c55\u671b<\/strong>\uff1a<\/p>\n

                        \n
                      1. \u5206\u6790\u5de5\u5177\u5c06\u8d8b\u5411\u9690\u5f62\u5316\uff1a \n
                          \n
                        • \u79d2\u7ea7\u8ba1\u7b97\u901f\u5ea6 <\/li>\n
                        • \u65b9\u6848\u521d\u671f\u5373\u8f93\u51fa\u6027\u80fd\u6307\u6807<\/li>\n<\/ul><\/li>\n
                        • \u4e0eAI\/\u673a\u5668\u5b66\u4e60\u6df1\u5ea6\u878d\u5408\uff1a \n
                            \n
                          • \u667a\u80fd\u4f18\u5316\u8bbe\u8ba1\u65b9\u6848 <\/li>\n
                          • \u964d\u4f4e\u4eba\u5de5\u6210\u672c\uff0c\u6fc0\u53d1\u7ed3\u6784\u521b\u65b0<\/li>\n<\/ul><\/li>\n<\/ol>\n
                            \n

                            \u8ba9\u7ed3\u6784\u7684\u4ef7\u503c\u4e0d\u518d\u4f9d\u9644\u4e8e\u5efa\u7b51\u8868\u76ae\uff0c\u800c\u662f\u901a\u8fc7\u6027\u80fd\u8bbe\u8ba1\u521b\u9020\u72ec\u7acb\u4ef7\u503c\u3002<\/p>\n

                            Repost of an old article. This piece reflects on elasto-plastic analysis. Approaching my 40s, my passion for structural engineering remains undiminished, but time for writing grows scarce. Cherish these moments. After graduate research and a decade of engineering practice, my perspectives have evolved. Below are reflections shared for those who ponder similarly. Contains thoughts from 2013 and updated reflections in 2022.<\/p>\n<\/blockquote>\n

                            \n
                            \"Author's<\/figure>\n
                            \n
                            <\/div>\n<\/div>\n
                            \n
                            1. Dynamic Elasto-Plastic Time-History Analysis vs Static Pushover Analysis: Which is More Accurate?<\/h5>\n

                            Some argue that time-history analysis uses seismic waves with inherent randomness\u2014different waves can yield significantly different results. Pushover analysis avoids this variability, making it more precise. Others counter:<\/p>\n

                              \n
                            • Pushover primarily considers the first-mode vibration, potentially neglecting higher-mode effects;<\/li>\n
                            • Static methods face theoretical limitations in evaluating dynamic problems.<\/li>\n<\/ul>\n

                              Common practice<\/strong>:<\/p>\n

                                \n
                              1. Conduct elasto-plastic dynamic time-history analysis first;<\/li>\n
                              2. Validate with Pushover analysis for comparison.<\/li>\n<\/ol>\n

                                Conclusion<\/strong>: Elasto-plastic analysis is complex and requires holistic judgment. Any method revealing structural weaknesses and aiding design decisions is valid.<\/p>\n

                                \n
                                \"Pushover<\/figure>\n
                                \n
                                Fundamental Principles of Pushover Analysis (Image source: Internet)<\/div>\n<\/div>\n
                                \n
                                2. Is There a Perfect Elasto-Plastic Analysis Software?<\/h5>\n

                                Idealist’s Dilemma<\/strong>:<\/p>\n

                                  \n
                                • ABAQUS<\/strong>: Powerful but steep learning curve;<\/li>\n
                                • PERFORM-3D<\/strong>: Focused on structural engineering but less user-friendly.<\/li>\n<\/ul>\n
                                  \n

                                  Analogy: Like choosing a partner, perfection implies imperfection. Software lacks humanity\u2014leverage strengths, accept limitations.<\/p>\n<\/blockquote>\n

                                  \n
                                  \"Plastic<\/figure>\n
                                  \n
                                  Commonly Used Elasto-Plastic Analysis Software<\/div>\n<\/div>\n
                                  \n
                                  3. Is “Precision Modeling” Necessary?<\/h5>\n

                                  Two Extremes<\/strong>:<\/p>\n

                                    \n
                                  • Idealist: Pursues models with “complete virtues” (comprehensive accuracy);<\/li>\n
                                  • Realist: Prioritizes overall performance over local precision.<\/li>\n<\/ul>\n

                                    Core Perspective<\/strong>:<\/p>\n

                                      \n
                                    • All calculations involve assumptions (i.e., approximations);<\/li>\n
                                    • Structural engineering tolerates larger errors than mechanical engineering;<\/li>\n
                                    • Focus on holistic performance + critical component analysis.<\/li>\n<\/ul>\n
                                      \n
                                      \"Simplified<\/figure>\n
                                      \n
                                      International Project with Simplified Exterior Moment-Resisting Frame Only<\/div>\n<\/div>\n
                                      \n
                                      4. How to Master Elasto-Plastic Analysis Software Efficiently?<\/h5>\n

                                      Three-phase progression:<\/p>\n

                                        \n
                                      1. Operation Mastery<\/strong>:
                                        \n"The software torments you endlessly, yet you treat it like your first love."<\/code><\/li>\n
                                      2. Principle Understanding<\/strong>:
                                        \n"The revolution is not yet complete; comrades must continue striving."<\/code> \n
                                          \n
                                        • Grasp algorithms, assumptions, pros\/cons<\/li>\n<\/ul><\/li>\n
                                        • Engineering Practice<\/strong>:
                                          \n"I’ll never regret even if my belt grows looser."<\/code> \n
                                            \n
                                          • Requires patience and meticulousness to solve real-world problems<\/li>\n<\/ul><\/li>\n<\/ol>\n
                                            \n
                                            \"Revolutionary<\/figure>\n
                                            \n
                                            Revolutionary Slogan (Internet Image)<\/div>\n<\/div>\n
                                            \n
                                            5. Necessity of Elasto-Plastic Analysis<\/h5>\n

                                            Applicable Scenarios<\/strong>:<\/p>\n

                                              \n
                                            • Super-high-rise or irregular structures;<\/li>\n
                                            • Novel seismic-resistant systems\/innovative designs;<\/li>\n
                                            • Non-standard materials\/energy dissipation devices;<\/li>\n
                                            • Performance goals exceeding code expectations.<\/li>\n<\/ul>\n

                                              Decision Criteria<\/strong>: Project Complexity \u00d7 Design Innovation \u00d7 Owner\u2019s Performance Needs<\/p>\n

                                              \n
                                              Conclusion & Outlook<\/h5>\n

                                              Core View<\/strong>: Analysis is a means, design is the end goal.<\/p>\n

                                                \n
                                              • Avoid overusing elasto-plastic analysis for conventional structures;<\/li>\n
                                              • Be cautious of misuse\u2014even codified requirements require critical evaluation.<\/li>\n<\/ul>\n

                                                Future Trends<\/strong>:<\/p>\n

                                                  \n
                                                1. Invisible analysis tools: \n
                                                    \n
                                                  • Second-level computation speed <\/li>\n
                                                  • Performance metrics output at early design stages<\/li>\n<\/ul><\/li>\n
                                                  • Integration with AI\/machine learning: \n
                                                      \n
                                                    • Intelligent design optimization <\/li>\n
                                                    • Reduce labor costs while fostering structural innovation<\/li>\n<\/ul><\/li>\n<\/ol>\n
                                                      \n

                                                      Let structural value transcend architectural aesthetics through performance-driven design.<\/p>\n<\/blockquote>","protected":false},"excerpt":{"rendered":"

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