XTRACT使用說明整理

1、一、xtract3.0.8使用方法介紹及與 sap2000計(jì)算結(jié)果比較摘自zengming博文題目簡介：鋼筋混凝土柱：500mmx500mm縱向鋼筋：8d20mm 鋼筋等級(jí) hrb400 , fyk=400mpa , fstk=540mpa橫向鋼筋：d8150mm 鋼筋等級(jí) hpb300, fyk=300mpa混凝土等級(jí)c30,對(duì)應(yīng)圓柱體抗壓強(qiáng)度標(biāo)準(zhǔn)值為30x0.85=25.5mpa（本例參數(shù)選取僅供參考）。步驟：1, 選擇截面形式和配置箍筋2, 選擇截面尺寸，配置縱向鋼筋:3,定義材料本構(gòu):年 sectionesigik t&nplatematerials:cov«r co

2、nci ete:select concrete or jdd ne判:匚uhimri (?口公 匚口11匚1te:sefed concrete or add new:|ccnfinedc3o 二|editneww金b concrete:select concrete oradd n 3m1zlecfit jnew |i-orhiitudlhal steel:s dsct s leel or - n ew:hr9400二add novyshell steel:selecl sleel or 4dd newjiaddn&/ |11luncwiirifd匚3。二 |add newdesign

3、 log:section i即8 r ectangular columntvpe of reinforcing； single hoop n 2 tiestransvefse r einfo icing 日 ai 二應(yīng)曰 8 mmspacing ol traneverse steel: 150 mmsection width： 500 mmsection height: 5d0 mm非約束混凝土材料:uucun£1 ned c oncretename of concrete model:|unccnfireclc3028 day corrtpressive suenghn；|25.5

4、0mpat endian s fcrenglh;|ompayield strain|2.000ecrushing strain:|3.000e-3spalling slain:|5.od0e-3pasi crushing slrenglh:|ompafailuie straincli.oooocaricrete elastic mlcdulus;|30.00e+3mpaviewdelete 1applystress30t2c-10- /0.000 ar00l 0,002or0030.0040.005s train|n-wm約束混凝土縱向鋼筋:farabolke s lt«iu har

5、dening steel 口也占1name of steel model：zii1steel standard and grade bpt.:用at stewl二jyield stress:rwqmpafracture stress:540.0mpashain al slrain hardening：|mooe-3failure shain.11000elastic modulus:|l99 9e+3mpahet |vievj |defete iapply |4,定義纖維尺寸，生成分析截面5,定義加載工況計(jì)算彎矩曲率曲線工況計(jì)算軸力-彎矩相關(guān)曲線工況點(diǎn)擊,運(yùn)行所有的分析，分析結(jié)果在界面自動(dòng)出現(xiàn)

6、。彎矩-曲率曲線軸力-彎矩相關(guān)性曲線4eti o&l *i tk ft! losing.,srasissssnmmehobbneabq器豳0snirbis客bs1qslfiqasolsqhh,解s9sib it磬/?翳/s彎矩2-彎矩3相關(guān)性曲線axif/ce，netjoomo-ss用因既ri*ik 國e麗4000m-30000002000 曬，蟲明）mmegoooo 小便mo 金頌、- 如mo jcaoooj崛麗-m同tmoomcjl20qm7,提取分析結(jié)果點(diǎn)擊 ，然后選擇sectionl,然后選擇 m-c工況，選擇 section output。h q cclumnsomdosec

7、son reporta 亡i section materials后再m-c.failue m echarwsm t! interactive output 國 analysis reporl _ unde formed shape-fl delormed shape田£ material outputa cj section outputtt-q p-maiairta5 ection loading units data0mbwwww9mihhkw300009 #0000 400000x-ztbs norient*，n-m100000-1g0cch 20000d'-am.!；

8、monients nijoolidi10olkw-sldooi-1sectionlproject outputmxxiscgtion section)loadingm cunitsn-mdata00137.34e+3273.65e+33110.1e4-34146.6e+35182.1e/36187.5e>37195.0e4-38200.4e/3g205.9es10212.2e+311220.0e+312226.3e+313232.4e+314238.2e+3152443e+316247.7e+317250.7e>3! project ianlger后 c column5g<5

9、00 j 占 g sectionlm section report 由 口 section malen-als；自產(chǎn)mc% failure mechanism 3 inter active output 曰 analysis report undeformed shape h deformed shape:ffi 白 material output ；白白 section outputel moments about the x-axis 國 moments about the y-axis axial strain at the centroid 國 curvatures about the

10、 x-axis j由 © p-mj向由m2-m3史。materidls i t cd data graphs18192021222324252627282930253.2e/3256.5e+32g0.9e+3264.1 e+3266.6e/3270.6e+32726e+3274.4e+3276.1 e3278.2e+3279.2e+327&9e*3iix長耳工sectlonl sectlonlnvh-ffi 1/*003, 73e+041. ue-037, 37e+042. ztezos1.10e+053. 41e-031. 47e+0 5 h 821+051.88e+054

11、. s4e-035.68b-036. 81e-031, 95e+052. ooe+q52. ofie+057. 95e-039, 08e-03l罐w22.12e+051.14e-022. 20k“5z 招e-02之 26e+053, 53e-022. 32e+05 & 72e-022. 38e+05 5. 9211-02粵短曲率曲法5000c一當(dāng)迫，曲豆三000.0s010150.20 250_3同理可以繪制出軸力-彎矩相關(guān)曲線，在此不再贅述。 在sap2000截面求解器中編輯此截面，并與之對(duì)比。1, 截面信息i理狀層性-solidmame曰七匕ingl巳materielc30colo

12、r11乂 center0.y center0.haight5(k,width,500.flotation1ft e in forcingyesdone. muddlander-con fined (fiwander dolorrebar mathrb400 1豆型模型|確定取消|約束布局混凝土材料名稱s系 ua.roki|c30一主筋限制材料名稱 |hpb300類型 |t« &cro$s tie三|高度伊卜緣約束clcl）（424666寬度伊卜臻約束cl,cl）姒筋間距高度綁扎«寬度綁扎tt相筋什r wwdwuu知|9dfyh|300.查看數(shù)值或打印i刷新確定取消e

13、l sliress s trailil curve 1m1口 bajsusadqojssyssh2dooof103030 -f50000名稱| hrb wo簡單鋼材幫型參激使用cdhan通變值 i 鋼筋尺寸赳其韌筋g弓筋尺 pidr翟靚丘1400叫1視圜獨(dú)印|一彎矩曲率曲轉(zhuǎn)一 5叩算結(jié)果.c5xtract計(jì)算的彎矩要比 sap2000由上圖可知，兩種軟件在彈性階段基本重合，在塑性階段, 計(jì)算的要大。二、關(guān)于其中強(qiáng)度值選取的討論1, 詳細(xì)見混規(guī)p286頁。立方體抗壓強(qiáng)度為 c30為例，立方體抗壓強(qiáng)度標(biāo)準(zhǔn)值為 30mpa考 慮實(shí)驗(yàn)的因素，試件混凝土強(qiáng)度為30x0.88=2

14、6.4mpa ,轉(zhuǎn)換為棱柱體抗壓強(qiáng)度， 再折減0.76 ,即26.4x0.76=20.064mpa，即表4.1.3-1所示混凝土軸心抗壓強(qiáng)度 20.1mpa。2, xtract 根據(jù)aci規(guī)范或軟件設(shè)計(jì)者本意（陸新征老師建議），取圓柱體抗壓強(qiáng)度，圓柱體抗壓強(qiáng)度為0.79x26.4mpa=20.856mpa ,這與棱柱體抗壓強(qiáng)度 20.1mpa比較接近的，即軸 心混凝土軸心抗壓強(qiáng)度。3, 之前我寫在xtractt作介紹白取值是30x0.85=25.5是錯(cuò)誤的，若誤導(dǎo)了大家，在此給予致歉，特在此糾正，同時(shí)也歡迎更多朋友多多交流。、xtract截面分析小軟件應(yīng)用這是第一篇博文，本著做好一個(gè)結(jié)構(gòu)人的使

15、命，我想寫一下xtract這個(gè)軟件,剛剛完成的地震工程學(xué)的作業(yè)全靠它了。 xtract軟件是美國imbsen公司銷售的，用來進(jìn)行混凝土構(gòu)件截面momen-phi分析的小程序，可以很快速的對(duì)混凝土截面畫出 m-phi曲線和n-m相關(guān)曲線，是科研和設(shè)計(jì)非常實(shí)用的軟件和任何人性化的軟件一樣，xtract支持命令流操作，以梁截面 beam.xbj為例:him；聞龍三二tt 眄 imijmijih ysw lmilihf fcpctptfci2 療由 r 弗 i, / i> ，/ & 0heh 心 a，00圖1: beam.xbj的截面顯示/ moment curvature loadin

16、g圖2.荷載定義，軸力，mx, my主要這三項(xiàng)注意：一般桿件模型的塑性較定義的時(shí)候，梁是 m3較，柱端是pmm較，具體 見sap2000中文版使用指南多少頁我暫時(shí)忘記了，下次補(bǔ)上。hpb400/ pardbolk strain hrjening steel model圖3.鋼筋材性定義，這里是用 conf ned concretenome of concrete model:|c45jj28 - day compie&sive strength.|2690mpateniior s trength:|ompaconfined concrete slrerglh:-1 區(qū).90mpayie

17、ld strain:|l.500e3cry filing strain;=| b'ooe 口concreie elastic modulus;|32.30e+3mpahelp1 viewdeleteapplyn-mm .圖4.c40混凝土本構(gòu)定義圖5:運(yùn)行l(wèi)i project managereo beam3 亡i sectbrl，e settiwi r&port由七i section materialss f* mfi% faburemechanismw interactive outputanalysis report und釬。mi國升叩qr defqrnnesh邨 w串亡

18、i同成小湖口u%t由 & section outputh & klrtefiakq 口日小 gwphw圖6.右側(cè)輸出菜單g project managerb 亡i beam a cj sectionl咚 5"ti。冉 re part縣口section m3婦rim體 / steelli j c40m - l點(diǎn)擊這里定義荷載，momentfailure meananisni, ： 司 interdcti*七口 jtput:report： undeformed shape. 8 de formed shape0 ：笆 h0回上,團(tuán) ,回:團(tuán)b o mxu詞 outpul3

19、.輸出到excelmawimurn steell material sdain maximum steell material stress minirnunn steell material slrir minimujnristeell mat&riestress maxirnufti c40 matefial strain maximum c40 ma固局 stress minimunn c4d material strain minimum c40 material stress團(tuán) i團(tuán)周回白 cj section ouipitmoments about the xa«

20、is marriante about thft y-axis axial strain at the centrcwdcurvatures about the x awi5自 cj mateiisfrepcft工可以顯示材住本捆圖7.輸出菜單詳解0q40.05公式中，fc、fy分別對(duì)應(yīng)開裂和屈服時(shí)的荷載；dc、dy分別表小對(duì)應(yīng)開裂 和屈服時(shí)的位移；a是卸載剛度系數(shù)。內(nèi)滯回再加載指向前一外滯回的最大點(diǎn)。 當(dāng)忽略開裂影響而采用雙線型骨架線時(shí)，除內(nèi)滯回環(huán)規(guī)則考慮更多一些外， takeda滯回模型與clough滯回模型基本相同。圖9.圖1： takeda滯回模型應(yīng)用sap2000軟件。對(duì)于梁截面，定義

21、m3 （彎矩一轉(zhuǎn)角）塑性較來擬合構(gòu)件的非線性行為，參考 fema365規(guī)程，通過定義io, ls, cp三個(gè)點(diǎn)來表征塑性錢的能力水平，如 圖7所示。對(duì)于彎曲控制混凝土梁，三個(gè)控制點(diǎn)處轉(zhuǎn)角定義為io: 0.003, ls:0012, cp: 0015。屈服彎矩：214.3kn - m （見三折線模型屈服點(diǎn)）。pointh1a(nent/sfrofation/sf2143-.0425d-2105-.014gc-1g4.005 口-10c061.0,164_5.644je-03l210.5q.014g zzo21433.0425e.q；垢/fj-j. ln”對(duì)稱的柱子的xtract是類似的，不同的是

22、輸出的是 pmm曲線區(qū)別是在loading里面選擇pm interaction a a4-minr上yumqjj 1,1jorra?1-二二二二工m j fl hf w. pm data code reduced pm data equation fil to pm datam(?)= 1*8 oe-3 - l6的e-6*。為:一2.591ey*華- 695.9e-3*(p 入戶 1-7540圖10 sap里面定義column ”彎矩一軸力”屈服曲線（pmmtt線）對(duì)于柱截面，定義pmm （軸力一彎矩耦合?。﹣頂M合構(gòu)件的非線性行為，將下，截面“彎矩一轉(zhuǎn)角”關(guān)系如上 m3較所述，屈服彎矩（sf）

23、根據(jù)pmm屈服面中相應(yīng)軸力p對(duì)應(yīng)的屈服彎矩給定交互面前擺輔時(shí)用禰1.屈侏p-m2m 3曲線2.時(shí)妙正岸周增加3.帆2蟲¥。在第一和最后點(diǎn)4指定曲線具有惘矢口和精2。5,每條曲籍心頂是凸的，相關(guān)面整體必須是凸的序面無波紛）xtract計(jì)算結(jié)果輸入程序中形成 pmm屈服面,如圖8所示。在任一軸力p作用植天道ff7運(yùn)義 columnpn-im指關(guān)曲建數(shù)掘當(dāng)前睇出n3 m 陽1匚將疊曲上巨薊比解系勃惻所育的威相網(wǎng)軸力m2維圖中怛舍比酬系數(shù)第一和最后一點(diǎn)反寸斫有曲就相同）點(diǎn) 觸m275j0. 747u19 了演總國 854 309 85c743.&4g5101 715621917r 5

24、270.43903720 32w 2760.1935677 純 425 4s?儂 491校按表而官亳義相關(guān)面送項(xiàng),艙轉(zhuǎn)邈稱m2和m3期向?yàn)闃?biāo)廣正對(duì)檢01 -2.114e-17 -12flse-1s ro22t 17tobse-lfi 0 ol 01 a 小2420.4 gol三維培圈 平面.5 irxi25- 孔侵角p加票當(dāng)前曲扇hm | pm3 pm2修顯示所悔出'照雅f方向線附注：箱型截面:皿 1 v>u- m 暄命令流放在最后（復(fù)制到txt里面，另存beamfi xbj文件，拖入到xtract圖標(biāo)）：# project file generated by xtract# c

25、reated by:紅亮# warning: when this file is read into xtract, data consistency checksare not performed. if inappropriate# input data is read into the software, unexpected results may ensue.before modifying this file, it is advised to# save a back up copy. the order of the file in not important, nor ist

26、he spacing. the file must contain global# data as described below. note that if this file is saved outside xtract, the associated output file will be# automatically deleted when the file is opened.# define the global parameters for the file separated by begin_global and end_global# version, units an

27、d name are required.begin_globalname = beam# er = 3.03units = n-mmhas_analyzed = true# optional parametersauthor =紅亮company =大學(xué)job_name =截面m-小曲線分析job_number = beamtime_stamp = 2012/7/1 15:33:16end_global# # begin material definition with begin_material and end with end_materialbegin_materialname =st

28、eel1type = strain hardening steelfy = 360.0fu = 360.0esh = .002esu = .09es = 200.0e+3end_material #begin_materialname = c40type = confined concretefc = 26.80ey = .0015ecu = .0033fl = 26.80ec = 32.50e+3# parameters for the confinement calculators are optionalcompstrength = 20.00end_material # begin s

29、ection definitions. between the begin and end section commands, the section shapes and# loadings are defined. if this is copied to a stand alone (.sec) file, then the section# materials also need to be defined.# begin section definition.begin_sectionbegin_buildername = section1# builder properties -

30、 boundary window - if left out, the default is used.boundary_bottom = -100.0boundary_left = -100.0boundary_right = 700.0boundary_top = 700.0min_triangle_area = 30.00max_number_of_fibers = 1000# current drawing window properties - if left out, the default is used.window_left = 479.7window_bottom = 50

31、.00window_height = 600.0end_builder # section comments or design log - optional begin_usercomments user commentsend_usercomments # shapes and meshes- for shapes within shapes, list outermost shape first. shape boundaries may not cross.# points are listed in x y coordinates separated by a comma prece

32、ded by the mode of drawing.# the last point in the sequence of any shape must be the sameas the first point to close the shape properly.# repeat shape start_shape - end_shape command group as needed. before editing the shape definitions, make sure# the data results in reasonable shapes (ie no lines

33、cross, if a shape is embedded in another shape -# confined within unconfined - the outer shape must be defined first). if the mesh size is defined too# small, an error will be thrown. to allow for smaller meshsizes, modify the max_number_of_fibers# parameter in the section definition.# section shape

34、sbegin_shapematerial = c40mesh = 20.00cover = 30.00material_core = c40begin_line0, 0250.0, 0250.0, 500.00, 500.00, 0end_lineend_shape# reinforcing bars. data is given commaseparated in the form x, y, area, prestress, material.begin_rebar50.80, 457.2, 314.2, 0, steel1127.0, 457.2, 314.2, 0, steel1203

35、.2, 457.2, 314.2, 0, steel150.80, 50.80, 314.2, 0, steel1127.0, 50.80, 314.2, 0, steel1203.2, 50.80, 314.2, 0, steel1203.2, 254.0, 314.2, 0, steel1127.0, 254.0, 314.2, 0, steell50.80, 254.0, 314.2, 0, steellend_rebar # define the loading data, choose moment curvature, capacity orbit, or pm interacti

36、on for loading type.# required data not defined here is taken from default values. begin_loadingname = mfitype = moment curvature# incrementing load parameters - positive increments in a positive direction.incmxx = 113.0use_best_fit = true# include plastic hinge length. calc_moment_rot = false# anal

37、ysis parameters.method = bisectionn_steps_before_yield = 10n_steps_after_yield = 20multiple_on_first_yield = 2bs_tol = 4448bs_max_itter = 40begin_loadusercommentsuser commentsend_loadusercommentsend_loading#end_section#命令流放在最后（復(fù)制到txt里面，另存column。xbj文件，拖入到xtract圖標(biāo)）# project file generated by xtract# c

38、reated by: 紅亮# warning: whenthis file is read into xtract,data consistency checks are notperformed. if inappropriate# input data is read into the software, unexpected results may ensue. before modifying this file, it is advised to# save a back up copy. the order of the file in not important, nor is

39、the spacing. the file must contain global# data as described below. note that if this file is saved outside xtract,the associated output file will be# automatically deleted when the file is opened.# define the global parameters for the file separated by begin_global and end_global# version, units an

40、d name are required.begin_globalname = beamver = 3.03units = n-mmhas_analyzed = true# optional parametersauthor =紅亮company =大學(xué)job_name =截面 m- 4曲線分析job_number = beamtime_stamp = 2012/7/1 15:33:16end_global# begin material definition with begin_material and end with end_material begin_materialname = s

41、teelltype = strain hardening steelfy = 360.0fu = 360.0esh = .002esu = .09es = 200.0e+3end_material #begin_materialname = c40type = confined concretefc = 26.80ey = .0015ecu = .0033fl = 26.80ec = 32.50e+3# parameters for the confinement calculators are optionalcompstrength = 20.00end_material # begin

42、section definitions. between the begin and end section commands, the section shapes and# loadings are defined. if this is copied to a stand alone (.sec) file, then the section # materials also need to be defined.# begin section definition.begin_sectionbegin_builder name = section1# builder propertie

43、s - boundary window - if left out, the default is used.boundary_bottom = -100.0boundary_left = -100.0boundary_right = 700.0boundary_top = 700.0min_triangle_area = 30.00max_number_of_fibers = 1000# current drawing window properties - if left out, the default is used.window_left = 479.7window_bottom =

44、 50.00window_height = 600.0end_builder # section comments or design log - optionalbegin_usercommentsuser commentsend_usercomments # shapes and meshes - for shapes within shapes, list outermost shape first. shape boundaries may not cross.# points are listed in x y coordinates separated by a comma pre

45、ceded by the mode of drawing.# the last point in the sequence of any shape must be the same as the first point to close the shape properly.# repeat shape start_shape - end_shape commandgroup as needed. before editing the shape definitions, make sure# the data results in reasonable shapes (ie no line

46、s cross, if a shape is embedded in another shape -# confined within unconfined - the outer shape must be defined first). if the mesh size is defined too# small, an error will be thrown. to allow for smaller mesh sizes, modify the max_number_of_fibers# parameter in the section definition.# section shapesbegin_shapematerial = c40mesh = 20.00cover = 30.00material_core = c40begin_line0, 0500.0, 0500.0, 500.00, 500.00, 0end_lineend_shape # reinforcing bars. data is given comma separated in the form x, y, area, prestres