桁架梁侧向稳定计算.doc

桁架梁侧向稳定计算3?9(?+?,147?9)2004?6?020?%rrnd?eastchinahighwayno.3(totalno.147)june2004?.%?:1001r?7291(2004)03r?(0053r?05?z?2?3:b?s?py?n?-?b(?3?(d?f?5r?239000)?:?ok?y?n?-?!?s?d?a?r=?s?r?i?1?dy?n?-?s?o?e?r?g?7r?s?6r”8(?#?%?o?r?ri?x?8(r?r?/?y?n?-?w?-?6?w?y?s?<%?18(d?z?:?o?;y?n?-?ok?d?a?r=y?s?e?i?y?d?2rb?.?s?r=r?x?i?83?(?83?e?y?q8(?e.?y?rxrb?y?dgo)?1?dr?i?n?-?sra?#r”?6oj?!?i?s?i?rcre?#r”?6?sre?#r”?6?/?s?r”?6?8(?%?y?83?(?e?!?sr?y?/?s?s?45cm?/?h?sr?(?h?s?r”?r?%?r?re83ra?#y?noj?%?%?o?s?!?j?d?ra?sd?y?noj?r?qy?h8(?fr?y?e?y?rx?83?(?e?!?s?y?n?-?srt?1?dy?n?-?s?h?r?%?9?8(?n?y?ra?s?/?w?8(?r?rera?/?<?s?#?o?(?.%?o?)?rx?/?2?r?ho9ii!r?r?f1?ir?5y4h?0;?rxl?/?s?r=?6?r=?/?x?h?s?1r?a)?f?x8(?r=?/?rxm,=f114,?/?/?rx0o?/?rxr6?sre?#?%?o?r?/?r6?s?r=%?o?rxn,o?f?x8(?r=?/?mz=?i?s?/?/?rx8(8(?/?rx/5e5e.r?(5l?(5a5er?85l5a838383j5l5n/5ar?5nj5a5n/?qr?b?sre?#?%?o?r?r?b?%?%.?s?r=%?o?rxnzofliv83=r?r34h?/?%?9y?ra?s?1-b)re?#%?r?ay?rm?/?%?#8(?q?o?%?s?rxl?sr?%?r?%?#?s?k?r?9:y?9:2003?09r?22r?%?r?3r?t54r?%rrnd?2004?,3?9?pk?hpk?hppr?83%>)2pidx%?xr?nidxr?x-/n2nz6(c)?3?re%?o?q?x?hd?rb?<%?o?rx21?rm?/%?#rb?<o?s?s?%?r?rx21?%?#?s?2r?a)?s?ay?rx1?r?so?r?%?#?s?2-b)?f?x8(%?z?%?#re?%?o?p8(?d?(1,/l)2qt?c?s?i?q?%?o?x?s?2r?8()?f?x8(?/?re?#?/?.?-?s%?r?i?%?%?rm?/?%?#?<?-?8(?%?r?ir?%?r?%?#?<?-?8(?/?y?r?/?!?8(1?/?y?n?-?1.1.?/?r=?6?r=?re?r=?n%?o?r?n,?x?s?dx?1?d?n%?o?dn?s?3r?a)8(o?rxn?s?s%?r?i?%?o?/%?#?<?-?8(?3r?a)1.2?/?6?1?y?re?r=?n%?o?rxn2,?s?2r?b)op=n,/3?rm?f?x8(%?o?%?%.?rx?n,?sn5nr?dtx+ns?dr?1?d?%?o?dn=r?r?z?83r?_n21,(r?dx)z?832r?x?s?d?ir?q?%?o?%?r?%?#?s?dp=r?dn2?0x3x14dn=rl2r?x3x_r?f=ir?_:r?dxr?r?r”jo5a?s2?ir?s%?r?%?#?s?%?o?dp83r?(l)2d?sr?zdx5e=fjll3xzdxar?%?r6?%?%.?re?#?n%?o?%?1?y?sre?#?r=?!%?o?nz%?r?i?%?o?rxnz/2?rm?/%?#?<?-?8(?r=?1?d?sy?ra?sre?#y?rxrm?/?%?#?s?%?o?rx?xn,?r=?!%?n2%?sr?s22004?,3?9?b?s?5r?:?y?n?-?1.3?6?r=?/?ra?#?%?o?%?%.?s?/?r=?6?r=?d?r?d8(?s?)?s%?r?ra?#?%?o?n,?ir?s%?r?%?#?s?%?o?rxn,13.1.4?1?y?/?rxg12/2?s?ra?#%?o?rx?08(?#rx10#?s?#83?#rx8#?s?i?i?4?f?x8(2.1?#?x?1?d?qy?d?d?o?s?r=?6f=1.2x500=600kn?s?y?r?r=?r?9?/?m,?o)ra?#?%?o?s?3r?8()?f?xfl600x39?s8(?sd?s83?sm.=?=r?=5850kn?m44re83ra?#r=?h=1.5m?sre?r=?n%?o?m,5850_183?sjv8(=r?r?.=r?r?-?sr?-=3jviih?dx?1?d?%?o?dno?1?%7?%?q?=18.5kn/m?s?r=?/?mzdn=-gxdxh?i?%?o?83=?r?8o8.5x392=3517.3kn.m?o?ore?#?r=?n%?o?;5ar?h?re2r?dp=(lzx)zgxdxmz31.5=2344.9kn?m8(r?n12r?p5nlhj05ar?5a)xdx=12hr?6?r?i?n?!?ix?i?wxo)omrxix=24x198.3+24x12.75x(150/2)5l%?1?ra?#%?o?ns?s%?r?ir?sr?%?#?<?-?s?%?o?rxn2/6o?r=?1?d?sy?s%?r?i?%?o?8(wx=172466017246607523000cm3p=150:150l?sd8sr?_?r?ld?83r?lr?a=450?d?8ir?rar?sr?8383r?r?r?r?-?83?r6rar?r?%?r?ra?jrxr1.r?l?o?rm183o?18383.r?s.lr?r?l?slr?l!ll?1?d?#?3.6cm?s?6?o>?7=0.509?sd?/?mm=,qwx?s8t=0.809x23000x103x273=l.06x100n?mm=106000kn?m>m,+r?=9367.3kn?m?4?i?i?x?02?y?r?39m?s?e?500kn?e?i?/?rxy?s?r?x?y?n?-?8(?5nr6?%?j5e?o?x?e?s?i?s?4?f?x8(?e?o?x?#r?q?rx16?82.2?8(?o?s%?o?%?/?o?8y?s8o=273mpa,?5?y?n?-?%?%?r?x?y?n?-?r=?rc?1?y?ra?sre?#?%?o?-56r?%rrnd?2004?,3?9?irm?/?#r?%?o?x8(_nr?39002344.9pr?r?+_+?r?r?r?r?r?r?r?2472.5kn35l2r?35l2r?5l-r?-r?y?r6?%?re?s?i?y%?s?y?4?%?o?rxr?o)r”r?s?5?f?x8(y?n?-?6?s?h%?%?r?8(?s?h%?%?r?/?rx12?z10”?sa8(r?12.74cm2,r,=15.6cm.?s?3”?<75835,39r?1.5?s8(8(=-r?r?r?%?r?r?r?xofd?8t3918.5x39+5yr?937.7kn?*?%?o?(?6)?#%?o?n=rr?937.7kn?s?#rx16?88#?9.52cmrmi8(r?1.d?y?70cm,?sar?1=0.9x70=6318cm?scm63rm;1.18=53.4a,y=7.367cm?srmin=1.a=1yr?x12.74=15250.88cmocm2cmx25.6+2x4x12.74x75=573607cm0r=0.818d?%?o?8snn=0.818x6x9.25x102x273r?1275600nr?1275.6kn>nr?937.7kn?#%?o?nir?rsin450=937.7x0.707=663.1kn?sd?y?70r2r?99cm?s?l=l2l28(?=573607a152.88=61.5er?a?sr?ry3900?s._=61.25r?8(j?5ar?by?%?o?8ip0.9x99=89r?69.9cm891.18n=75.48e?18a?17,r=0.705?sdpr?8i?s8or?0.705x12x12.74x102x273=2.94x106n=2940knrminr=r?0.66d?%?o?n=0.66x6x9.25x102x273=1.029x106n=1029kn>n,=633.1kn>2r?2472.5=1236.3kn1500?b?q0?!?8(?1?s?16?8?ok?i?s?h%?%?r?s?o?o?qr?34ar?348310r?283128312.74r?52kn?s?%?o?ddr?q=52r?73.6knnsina1xsin450%?83ir?l=?r?r3r?r?106cm1061.50=70.78i8(8t?8e?18a?16,0r?0.789,?d?%?o?8y0,pr?150mpa?sd?%?o?6?#?x?h2.4o?x?#?wo?o?o?x?#rc?e?#?m36?w?s?w?q?rx16?8?sd?o?o?8i%?=208mpa,?x8t=?8y?s8o=0.789x7.367x102x=87188n=87.188kn2.3?#?w?1?rx?3m2%?s?acm?q?o?150>d=73.6kn?%?sn=?%?w?o?o?sai?r=?f=600kn?s?/?l,=1.5m,?hr=i5ar?%?i?!?s11724660x104mm4=150724660en8nr?9r?18.5kn/m?s?/?%?o?r;r?1-1,83;+?1zq?!o?o?sq=,rr?937.7kns5yo?x?#?i?r=?ss=2004?,3?9?b?s?5r?:?y?n?-?r?57r?12x12.74x8012230.4x103=12230.4mm3?sn=937.7x103x12230.4x103x150x101724660x100r?srclesesesj9.97x103no?o2?i?sa=6xtrd2/4r?61.07d?o?o?r?9.97x1yh61.r?x1?r?163.0mpa<=2018mpar?r?n-a83r?eer2.5?5?2.5.1?z?!%?5?r?o?rt%?t?z?!%?s?/?r=r?9?5?d?l?s?r?r?e?rx?%?j?s%?d?h(1)d?:r?0.3556(n2r?1)/8(1)?hr=n-?s?,y?n=13od?:=0.3556(13?sr?1)r?7.5cm2.5.2?z?!%?5?z?!%?r=?5?d?=d?s+?=7.5+24.05=31.55cm3?<y?n?-?8(?r?/?6?<?8(?1?r=?r=?d?sy?ra?sd?r=?#%?o?o)omrxn2?n?s?s%?r?irc?s?rm?/?#?83?%?o?rxn,/3+nz/28(?r?s?1?r=?d?sy?ra?sd?#%?o?o)omrxn2?n,?s%?r?ir?s%?r?%?#?s?%?o?rxr?/6+n1/30?1?r?!?rrsm.aa2r?rxr?%?kcm-)kcm)kcm)?cm)?yem)tcm)?ycm)?#2r?11025.48396.679.43.95827945.7?#1r?189.539924.83.2112.84.91.19?2?d?y?!?5d?y?!w(cm3)3578.57699.17157.115398.310735.623097.414817.930641.722226.845962.6j(om0)%?%?j83=(?)8yl+(tg?s+cto)r?8o%?%?jr6?%?j83(1.6;r?8(.335?)h%?%?j?hr=1-?s39m=39x1000mm;h,-c?/?4?its?s1500mm;015y?#?s?#?z?s450;e-?q?z?!?b?s2.1x105mpa;f5y?r=?r=?s600kn;95y?%?1?s18.5kn/m=18.5n/mm;i-?i?!?s2x1724660x104mm4;h-?s1.5mr?1500mm8(600x103x393x10003j?8or?cr2r3r?r?r?xtr?-?z?r?.-?s?r?r?s5nr?vr?5yr?r?r?r3+5a48x2.1x10x2x1724660x104r6?%?jrto?xo?xrto?xo?xrto?xo?xrto?xo?xrto?