{"id":16012,"date":"2021-03-31T13:28:44","date_gmt":"2021-03-31T05:28:44","guid":{"rendered":"http:\/\/www.jdcui.com\/?p=16012"},"modified":"2026-02-15T08:55:02","modified_gmt":"2026-02-15T00:55:02","slug":"etabs-etabs%e8%ad%a6%e5%91%8athe-structure-is-unstable-or-ill-conditioned-case-3","status":"publish","type":"post","link":"http:\/\/www.jdcui.com\/?p=16012","title":{"rendered":"[\u8f6f\u4ef6\u7b14\u8bb0] ETABS\u8b66\u544a&#8221;THE STRUCTURE IS UNSTABLE OR ILL-CONDITIONED!!&#8221; (Case 3)"},"content":{"rendered":"<p><span style=\"color: #ff00ff; background-color: #ccffcc;\"><strong>\u5b9e\u5e72\u3001\u5b9e\u8df5\u3001\u79ef\u7d2f\u3001\u601d\u8003\u3001\u521b\u65b0\u3002<\/strong><\/span><\/p>\n<hr \/>\n<p>\u63a5\u624b\u4e00\u4e2aETABS\u6a21\u578b\uff0c\u76f4\u63a5\u8ba1\u7b97\uff0c\u62a5\u9519\uff0c\u63d0\u793a&#8221;THE STRUCTURE IS UNSTABLE OR ILL-CONDITIONED!!&#8221;\uff0c\u63d0\u793a\u7ed3\u6784\u4e0d\u7a33\u5b9a\uff0c\u6a21\u6001\u7ed3\u679c\u4e5f\u5f02\u5e38\u3002<\/p>\n<p>\u592a\u4e45\u6ca1\u7528ETABS\uff0c\u603b\u662f\u5404\u79cd\u95ee\u9898\u3002\u5df2\u7ecf\u662f\u7b2c\u4e09\u6b21\u9047\u5230\u8fd9\u4e2a\u95ee\u9898\uff1a<\/p>\n<p><span style=\"background-color: #ffff99;\">* * * W A R N I N G * * *<\/span><br \/>\n<span style=\"background-color: #ffff99;\">THE STRUCTURE IS UNSTABLE OR ILL-CONDITIONED !!<\/span><br \/>\n<span style=\"background-color: #ffff99;\">CHECK THE STRUCTURE CAREFULLY FOR:<\/span><br \/>\n<span style=\"background-color: #ffff99;\">&#8211; INADEQUATE SUPPORT CONDITIONS, OR<\/span><br \/>\n<span style=\"background-color: #ffff99;\">&#8211; ONE OR MORE INTERNAL MECHANISMS, OR<\/span><br \/>\n<span style=\"background-color: #ffff99;\">&#8211; ZERO OR NEGATIVE STIFFNESS PROPERTIES, OR<\/span><br \/>\n<span style=\"background-color: #ffff99;\">&#8211; EXTREMELY LARGE STIFFNESS PROPERTIES, OR<\/span><br \/>\n<span style=\"background-color: #ffff99;\">&#8211; BUCKLING DUE TO P-DELTA OR GEOMETRIC NONLINEARITY, OR<\/span><br \/>\n<span style=\"background-color: #ffff99;\">&#8211; A FREQUENCY SHIFT (IF ANY) ONTO A NATURAL FREQUENCY<\/span><\/p>\n<p><span style=\"background-color: #ffff99;\">TO OBTAIN FURTHER INFORMATION:<\/span><br \/>\n<span style=\"background-color: #ffff99;\">&#8211; USE THE STANDARD SOLVER, OR<\/span><br \/>\n<span style=\"background-color: #ffff99;\">&#8211; RUN AN EIGEN ANALYSIS USING AUTO FREQUENCY SHIFTING (WITH<\/span><br \/>\n<span style=\"background-color: #ffff99;\">ADDITIONAL MASS IF NEEDED) AND INVESTIGATE THE MODE SHAPES<\/span><\/p>\n<p>\u4f9d\u7136\u662f\u8fd9\u79cd\u521a\u5ea6\u77e9\u9635\u4e0d\u7a33\u5b9a\u7684\u95ee\u9898\u3002<\/p>\n<p>\u89e3\u51b3\u529e\u6cd5\uff0c\u8bb2\u6c42\u89e3\u5668\uff0c\u8bbe\u7f6e\u4e3a \u6807\u51c6\u6c42\u89e3\u5668\uff0c\u6839\u636e\u63d0\u793a\u68c0\u67e5\u3002<\/p>\n<p>\u6700\u540e\u53d1\u73b0\u95ee\u9898\u51fa\u73b0\u5728\u8fde\u63a5\u5355\u5143\u76f8\u5173\u7684\u81ea\u7531\u5ea6\u4e0a\uff0c\u662f\u7531\u4e8e\u652f\u6491\u7aef\u90e8\u91ca\u653e\u8fc7\u591a\u5bfc\u81f4\u8282\u70b9\u5728\u67d0\u4e9b\u81ea\u7531\u5ea6\u4e0a\u521a\u5ea6\u4e3a0\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-16013\" src=\"http:\/\/www.jdcui.com\/wp-content\/uploads\/2021\/03\/Link.png\" alt=\"\" width=\"492\" height=\"450\" \/><\/p>\n<p>\u7b97\u662f\u627e\u5230\u901a\u7528\u7684\u89e3\u51b3\u529e\u6cd5\u4e86\u3002<\/p>\n<hr \/>\n<p style=\"text-align: center;\"><strong><div  class=\"thumbs-rating-container\" id=\"thumbs-rating-16012\" data-content-id=\"16012\"><button class=\"thumbs-rating-up thumbs-rating-voted\" onclick=\"thumbs_rating_vote(16012, 1);\">Vote Up +4<\/button> <button class=\"thumbs-rating-down thumbs-rating-voted\" onclick=\"thumbs_rating_vote(16012, 2);\">Vote Down -1<\/button><span class=\"thumbs-rating-already-voted\">You already voted!<\/span><\/div><\/strong><\/p>\n<ul style=\"list-style-type: square;\">\n<li><strong>\u76f8\u5173\u535a\u6587 (<span style=\"color: #000080;\"> Related Posts<\/span>)<\/strong><\/li>\n<\/ul>\n<p><strong><span style=\"color: #000000;\">[01].<\/span>\u00a0<a href=\"http:\/\/www.jdcui.com\/?p=5262\">ETABS 2015\u4eba\u5de5\u6ce2\u529f\u80fd\u521d\u6b65\u6d4b\u8bd5(\u4e00)<\/a><\/strong><\/p>\n<p><strong><span style=\"color: #000000;\">[02].<\/span>\u00a0<a href=\"http:\/\/www.jdcui.com\/?p=5287\">ETABS 2015\u4eba\u5de5\u6ce2\u529f\u80fd\u521d\u6b65\u6d4b\u8bd5(\u4e8c)<\/a><\/strong><\/p>\n<p><strong><span style=\"color: #000000;\">[03].<\/span>\u00a0<a href=\"http:\/\/www.jdcui.com\/?p=6351\">[Tool][\u8f6f\u4ef6] ETABS\u7ec4\u5408\u622a\u9762\u5efa\u6a21\u5de5\u5177[Tool for creating composite section in ETABS]<\/a><\/strong><\/p>\n<p><strong><span style=\"color: #000000;\">[04].<\/span>\u00a0<a href=\"http:\/\/www.jdcui.com\/?p=6344\">ETABS 2016\u8f6cYJK(\u76c8\u5efa\u79d1)\u63d0\u793a\u201c\u672a\u627e\u5230\u8d28\u91cf\u6e90\u5de5\u51b5\u201d<\/a><\/strong><\/p>\n<p><strong><span style=\"color: #000000;\">[05].<\/span>\u00a0<a href=\"http:\/\/www.jdcui.com\/?p=6878\">[\u8f6f\u4ef6][\u5de5\u5177][Programming][ETABS]ETABS E2K Timehistory Extractor [ETABS E2K\u65f6\u7a0b\u63d0\u53d6\u8f6f\u4ef6]<\/a><\/strong><\/p>\n<p><strong><span style=\"color: #000000;\">[06].<\/span>\u00a0<a title=\"[\u7a0b\u5e8f] ECM: ETABS Concrete Modifier [ETABS\u6df7\u51dd\u571f\u6750\u6599\u4fee\u6539\u5668]\" href=\"http:\/\/www.jdcui.com\/?p=6923\" target=\"_blank\" rel=\"noopener\">[\u7a0b\u5e8f] ECM: ETABS Concrete Modifier [ETABS\u6df7\u51dd\u571f\u6750\u6599\u4fee\u6539\u5668]<\/a><\/strong><\/p>\n<p><strong><span style=\"color: #000000;\">[07].<\/span>\u00a0<a href=\"http:\/\/www.jdcui.com\/?p=11015\">[Midas][ETABS] \u6846\u67b6\u65f6\u7a0b\u5206\u6790\u5bf9\u6bd4(ETABS vs. midas Gen)<\/a><\/strong><\/p>\n<p><strong><span style=\"color: #000000;\">[08].<\/span>\u00a0<a href=\"http:\/\/www.jdcui.com\/?p=10996\">SAP2000\u622a\u9762\u8bbe\u8ba1\u5668\u4e2d\u622a\u9762\u5206\u6790\u5b9e\u4f8b [Sectional Analysis Example in SAP2000 Section Designer]<\/a><\/strong><\/p>\n<p><strong><span style=\"color: #000000;\">[09].<\/span>\u00a0<a href=\"http:\/\/www.jdcui.com\/?p=12062\">[\u52a8\u529b\u5b66][\u7b97\u4f8b][\u9a8c\u8bc1] IRS\u5355\u81ea\u7531\u5ea6\u5730\u9707\u7ebf\u6027\u53ca\u975e\u7ebf\u6027\u65f6\u7a0b\u5206\u6790\u7b97\u4f8b\u53ca\u9a8c\u8bc1(\u4e0eSAP2000\u5bf9\u6bd4) (Linear and Nonlinear Earthquake Time History Analysis Verification Example of IRS)(compared with SAP2000)<\/a><\/strong><\/p>\n<p><strong><span style=\"color: #000000;\">[10].<\/span>\u00a0<a href=\"http:\/\/www.jdcui.com\/?p=12474\">SAP2000 API \u4e8c\u6b21\u5f00\u53d1\u521d\u63a2<\/a><\/strong><\/p>\n<p><strong><span style=\"color: #000000;\">[11].<\/span>\u00a0<a href=\"http:\/\/www.jdcui.com\/?p=12659\" target=\"_blank\" rel=\"noopener noreferrer\">[ETABS][\u7ed3\u6784\u5206\u6790] ETABS v9 \u6a21\u6001\u5206\u6790\u6a21\u6001\u6570\u91cf\u7684\u8bbe\u7f6e<\/a><\/strong><\/p>\n<p><strong><span style=\"color: #000000;\">[12].<\/span>\u00a0<a href=\"http:\/\/www.jdcui.com\/?p=12661\">[ETABS][\u7f16\u7a0b][\u5de5\u5177] ETABS\u5feb\u901f\u6307\u5b9a\u521a\u6027\u9694\u677f (Rigid Diaphram)<\/a><\/strong><\/p>\n<p><strong><span style=\"color: #000000;\">[13].<\/span>\u00a0<a href=\"http:\/\/www.jdcui.com\/?p=13646\" target=\"_blank\" rel=\"noopener noreferrer\">[ETABS][\u7ed3\u6784\u5206\u6790] ETABS\u63d0\u793a\u201dError saving text file Separator Wall Desing \u2013 Erro No.9 \u7d22\u5f15\u8d85\u51fa\u4e86\u6570\u7ec4\u754c\u9650\u201d\u65e0\u6cd5\u4fdd\u5b58\u6a21\u578b\u7684\u5904\u7406\u529e\u6cd5<\/a><\/strong><\/p>\n<p><strong><span style=\"color: #000000;\">[14].<\/span>\u00a0<a href=\"http:\/\/www.jdcui.com\/?p=14354\" target=\"_blank\" rel=\"noopener noreferrer\">[\u7ed3\u6784\u4f18\u5316][\u7f16\u7a0b][\u8f6f\u4ef6] \u57fa\u4e8eETABS\u4e8c\u6b21\u5f00\u53d1\u7684\u7ed3\u6784\u4f18\u5316\u8bbe\u8ba1\u7a0b\u5e8f\u53ca\u5176\u5728\u5b9e\u9645\u5de5\u7a0b\u4e2d\u7684\u5e94\u7528<\/a><\/strong><\/p>\n<p><strong><span style=\"color: #000000;\">[15].<\/span>\u00a0<a title=\"[\u7ed3\u6784][\u5206\u6790][ETABS] ETABS V9\u4e2d\u7684\u697c\u5c42\u8d28\u91cf\" href=\"http:\/\/www.jdcui.com\/?p=14723\" target=\"_blank\" rel=\"noopener noreferrer\">[\u7ed3\u6784][\u5206\u6790][ETABS] ETABS V9\u4e2d\u7684\u697c\u5c42\u8d28\u91cf<\/a><\/strong><\/p>\n<p><strong><span style=\"color: #000000;\">[16].<\/span>\u00a0<a title=\"[ETABS] ETABS2016\u526a\u529b\u5899\u7f51\u683c\u5212\u5206\u5c3a\u5bf8 (Auto Rectangular Mesh Setting for Walls)\" href=\"http:\/\/www.jdcui.com\/?p=15341\" target=\"_blank\" rel=\"noopener noreferrer\">[ETABS] ETABS2016\u526a\u529b\u5899\u7f51\u683c\u5212\u5206\u5c3a\u5bf8 (Auto Rectangular Mesh Setting for Walls)<\/a><\/strong><\/p>\n<p><strong><span style=\"color: #000000;\">[17].<\/span>\u00a0<a title=\"[ETABS][\u7ec4\u5408\u622a\u9762] ETABS\u4e2d\u901a\u8fc7\u622a\u9762\u8bbe\u8ba1\u5668\u5b9a\u4e49\u7684\u7ec4\u5408\u622a\u9762 (ETABS v9 and ETABS 201x) (ETABS Section Designer)\" href=\"http:\/\/www.jdcui.com\/?p=15350\" target=\"_blank\" rel=\"noopener noreferrer\">[ETABS][\u7ec4\u5408\u622a\u9762] ETABS\u4e2d\u901a\u8fc7\u622a\u9762\u8bbe\u8ba1\u5668\u5b9a\u4e49\u7684\u7ec4\u5408\u622a\u9762 (ETABS v9 and ETABS 201x) (ETABS Section Designer)<\/a><\/strong><\/p>\n<p><strong><span style=\"color: #000000;\">[18].<\/span>\u00a0<a title=\"[ETABS] ETABS\u8b66\u544a\u201dTHE STRUCTURE IS UNSTABLE OR ILL-CONDITIONED!!\u201d\" href=\"http:\/\/www.jdcui.com\/?p=15394\" target=\"_blank\" rel=\"noopener noreferrer\">[ETABS] ETABS\u8b66\u544a\u201dTHE STRUCTURE IS UNSTABLE OR ILL-CONDITIONED!!\u201d<\/a><\/strong><\/p>\n<p><strong><span style=\"color: #000000;\">[19].<\/span>\u00a0<a title=\"[ETABS] ETABS\u8b66\u544a\u201dTHE STRUCTURE IS UNSTABLE OR ILL-CONDITIONED!!\u201d (Case 2)\" href=\"http:\/\/www.jdcui.com\/?p=15912\" target=\"_blank\" rel=\"noopener noreferrer\">[ETABS] ETABS\u8b66\u544a\u201dTHE STRUCTURE IS UNSTABLE OR ILL-CONDITIONED!!\u201d (Case 2)<\/a><\/strong><\/p>\n<p><strong><span style=\"color: #000000;\">[20].<\/span>\u00a0<a title=\"[ETABS] ETABS\u8b66\u544a\u201dTHE STRUCTURE IS UNSTABLE OR ILL-CONDITIONED!!\u201d (Case 3)\" href=\"http:\/\/www.jdcui.com\/?p=16012\" target=\"_blank\" rel=\"noopener noreferrer\">[ETABS] ETABS\u8b66\u544a\u201dTHE STRUCTURE IS UNSTABLE OR ILL-CONDITIONED!!\u201d (Case 3)<\/a><\/strong><\/p>\n<ul style=\"list-style-type: square;\">\n<li style=\"text-align: left;\"><strong>\u5fae\u4fe1\u516c\u4f17\u53f7\u00a0(<span style=\"color: #000080;\">\u00a0Wechat\u00a0Subscription<\/span>)<\/strong><\/li>\n<\/ul>\n<p><a href=\"http:\/\/www.jdcui.com\/wp-content\/uploads\/2017\/01\/QRCODE.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-3636\" src=\"http:\/\/www.jdcui.com\/wp-content\/uploads\/2017\/01\/QRCODE.jpg\" alt=\"WeChat_QRCode\" width=\"250\" height=\"255\" \/><\/a><\/p>\n<p style=\"text-align: center;\"><strong>\u6b22\u8fce\u5173\u6ce8\u00a0\u201c<span style=\"color: #ff00ff;\">\u7ed3\u6784\u4e4b\u65c5<\/span>\u201d\u00a0\u5fae\u4fe1\u516c\u4f17\u53f7<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b9e\u5e72\u3001\u5b9e\u8df5\u3001\u79ef\u7d2f\u3001\u601d\u8003\u3001\u521b\u65b0\u3002 \u63a5\u624b\u4e00\u4e2aETABS\u6a21\u578b\uff0c\u76f4\u63a5\u8ba1\u7b97\uff0c\u62a5\u9519\uff0c\u63d0\u793a&#8221;THE STRUCTURE IS UNSTABLE OR ILL-CONDITIONED!!&#8221;\uff0c\u63d0\u793a\u7ed3\u6784\u4e0d\u7a33\u5b9a\uff0c\u6a21\u6001\u7ed3\u679c\u4e5f\u5f02\u5e38\u3002 \u592a\u4e45\u6ca1\u7528ETABS\uff0c\u603b\u662f\u5404\u79cd\u95ee\u9898\u3002\u5df2\u7ecf\u662f\u7b2c\u4e09\u6b21\u9047\u5230\u8fd9\u4e2a\u95ee\u9898\uff1a * * * W A R N I N G * * * THE STRUCTURE IS UNSTABLE OR ILL-CONDITIONED !! CHECK THE &#8230;<\/p>\n","protected":false},"author":1,"featured_media":16013,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[727,1087],"tags":[10,2845,2844,1308,2985],"class_list":["post-16012","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-etabssap2000","category-structural-analysis-","tag-etabs","tag-ill-conditioned","tag-unstable","tag-1308","tag-2985"],"aioseo_notices":[],"views":3339,"_links":{"self":[{"href":"http:\/\/www.jdcui.com\/index.php?rest_route=\/wp\/v2\/posts\/16012","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.jdcui.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.jdcui.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.jdcui.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.jdcui.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=16012"}],"version-history":[{"count":0,"href":"http:\/\/www.jdcui.com\/index.php?rest_route=\/wp\/v2\/posts\/16012\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.jdcui.com\/index.php?rest_route=\/wp\/v2\/media\/16013"}],"wp:attachment":[{"href":"http:\/\/www.jdcui.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=16012"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.jdcui.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=16012"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.jdcui.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=16012"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}