无缝线路课程设计

课程名称轨道工程设计题目无缝线路课程设计院系土木工程系专业年级姓名学号指导教师西南交通大学峨眉校区课程设计任务书专业姓名学号开题日期2012年10月1日完成日期2012年11月23日题目无缝线路课程设计一、设计的目的掌握轨道结构竖向受力计算及锁定轨温的确定、轨道结构强度检算、无缝线路结构计算二、设计的内容及要求第一部分轨道结构竖向受力计算及锁定轨温的确定11静力计算12轨道动力响应的准静态计算13动弯矩和动反力计算14钢轨弯曲应力计算15无缝线路稳定允许温度力和允许温升计算；16设计锁定轨温的确定第二部分轨道结构强度检算21钢轨基本应力检算22轨枕弯矩检算23道床及路基顶面应力检算；第三部分无缝线路结构计算；31轨条长度及缓冲区的设计32伸缩区长度33绘制温度力分布图并标注主要位置的数值；34预留轨缝设计；三、指导教师评语四、成绩指导教师签章年月日无缝线路线路设计一、设计原始资料1、铺设地点锦州2、钢轨类型60KG/M3、轨枕类型I型4、轨枕间距1760根/KM5、扣件类型I型6、道床类型及肩宽60轨肩宽40CM，厚度50CM7、钢轨接头螺栓扭矩值60轨800NM8、道床纵向阻力混凝土轨枕87N/MM单根轨枕的道床纵向阻力10000N9、设计区最小半径R500M10、轨下各结构层刚度（应将胶垫、道床、路基刚度按照串联弹簧方式进行换算。轨下基础刚度选为特重型钢轨为350KN/CM，轨枕、道床及基床为800KN/CM11、设计最高行车速度100KM/H12、荷载组合1机车1车辆13、机车类型机车类型静轮重（KN）轮1至前轮中心距离（M）轮2至前轮中心距离（M）轮3至前轮中心距离（M）轮4至前轮中心距离（M）轮5至前轮中心距离（M）轮6至前轮中心距离（M）轮7至前轮中心距离（M）轮8至前轮中心距离（M）构造速度KM/HDF81100181884181800100C62100151869175二、无缝线路的设计计算1、轨道结构竖向受力计算及锁定轨温的确定机车通过曲线轨道的允许速度的确定对于新建线路，通过R500M曲线轨道时的机车允许速度可按来计算，得，DF8机车构造速度100KM/H，故取最大HKMM/H来检算各部件的强度。DF8机车前后有两个转向架，每个转向架为三个轴，前后转向架最近轴距为84，当轴距大于5M以上时，相邻轮子M影响很小，可以不计。因此，寻找引起最大弯矩的最不利轮位时，只要用一个转向架的三个轴分别做为计算轮来求最不利轮位。而且，还应注意到转向架的三个轴轮重一样，轴距亦相同，所以1、3轮引起的弯矩应当相同，只要考虑其中一个即可。这样，只要在1、2轮中找最不利轮。计算时列表进行。作用如下图（1）计算K值I型钢筋混凝土枕1760根KM钢轨支座刚度D查表得混凝土枕、橡胶垫板重型特重型DMN/350轨枕间距，因此26817AMPADU1513445402910327IMEK这里新轨对水平轴的惯性矩。MG/6047IX（2）计算P分别以动1、动2为计算轮，计算，（值是根据值，查PKX表可得）列表进行（见下表），由表中看出，动1（或动3）轮为最大，也就是最不利轮位，以它作为计算弯矩的依据见下表其中，KX为弧度值。轮位PN计算轮项目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（3）计算静弯矩M。由上表可知，计算轮3的P975236为其中的最大值，用此值来计算静弯矩。MNPK519837401410（4）计算动弯矩M。计算内燃机车运行条件下钢轨轨底弯曲应力时，速度系数为38501960V由计算偏载系数的公式，式中75MM，测得H01572PA查表64得R时，横向水平力系数F170，则为FMD1P07015380598374MN62B在直线地段上，横向水平力系数，F2FMD1P051038598374MN65（5）计算动弯应力D21,新轨截面模量则得轨底和轨头应力为323940,90MWA曲线轨底动弯拉应力MPAMD7251339605171曲线轨头动弯压应力AWD52139405172B直线轨底动弯拉应力MPAWMD12963078451直线轨头动弯压应力AD1523940782（6）钢轨强度检算查表得25M长的75KG/M钢轨的温度力。MPT对于U71钢轨，屈服极限，新轨的安全系数，因此，允许应力AS40531KMPA53140A、曲线轨底7251872131TD轨头0502TB、直线轨底4961TD轨头156312T所以东风8型机车通过改曲线时，钢轨强度满足要求。2、混凝土轨枕强度检算（1）计算、K值计算I型混凝土轨枕弯矩、道床应力查表得胶垫道床路基换算后的总的支撑刚度MND/80）（MPAU79514025614454051327IMEK（2）计算列表（见下表）计算，动轮1为最大，是最不利轮位。P表中，其中KX为弧度值。轮位PN计算轮项目DF81DF82DF83DF84DF85DF86C621C622C623C624PN110000110000110000110000110000110000100000100000100000100000XMM01800360012000138001560017100189002580027550X027185436181220838235562582128539389584160051003304000038106619E09453321E1059201E11860092E124948E13151584E171212E18DF81PN1100003634584185090000117498654E0565121E06860092E074948E08151584E121212E131063236PN110000110000110000110000110000110000100000100000100000100000XMM18000180010200120001200013500153002220023950X27342027342154938182281822820506523240733721836380050033910033914275E0727969E0927969E09113058E0910201E10161024E1611411E16DF82PN3728771100003728770015700003080000308000011310201E05161024E1111411E111025424PN110000110000110000110000110000110000100000100000100000100000XMM4300200008400102001200013500153002220023950X4949323020966841174021381215538517610325552227566450005230007665176641E0545926E07127152E0614586E0713943E08105581E1111682E13DF83PN574948431491100008430460050520139867001459000139105581E0611682E081102599PN110000110000110000110000110000110000100000100000100000100000XMM1080090007200018003600150033001020011950X16308135910872027185436226549831540218044511496E07172191E0621177E05100330400003800133720004771335E0740494E10DF84PN001265018941232951110000363458418509133722547719900133540494E051071814PN110000110000110000110000110000110000100000100000100000100000XMM140001220010400200001800330051001200013750X2114184221570430202718498377011812207625DF85612513E494681E1507E004252100330400047700005161066195831891012624110907E09E10PN673764E06000054400165846773811000036345847719951602670000107583189E05PN110000110000110000110000110000110000100000100000100000100000XMM161001430012500410023000150033001020011950X243112159318875619134730226549831540218044514214E1222381E10650827E090001851003943100133720004771335E0740494E10DF86PN15635E0724619E050000716203563343373110000133722547719900133540494E051067263PN110000110000110000110000110000110000100000100000100000100000XMM15600138001200036001800150001800870010450X23556208381812543627182265027181313715779559201E11453321E10106619E0900003800330400133721003304272329E0614997E07C621PN65121E06498654E0500001174185093634581470947100000330416027232900159449062PN110000110000110000110000110000110000100000100000100000100000XMM1890017100153006900510033001800069008650X285392582123103104197701498327180104191306154948E13860092E1212401E1041311E050000516000477003304141311E05288017E06C622PN54428E08946101E0713641E0545441756762945249183304161000004131060288017962193PN110000110000110000110000110000110000100000100000100000100000XMM2580024000222001380012000102008700690001750X38958362433522208381812154021313710419026425151584E1716099E16967627E16453321E10106619E091335E07272329E0641311E051002843C623PN166742E1217709E11106439E10498654E05000011700146802723294131061000002842979715316PN110000110000110000110000110000110000100000100000100000100000XMM27550257502395015550137501195010450865017500X416005388825361645234805207625180445157795130615264250C6241212E18169323E1718952E166842E11583189E1040494E14997E07288017E06002843197157310PN13332E13186255E1220847E1175262E06641508E0544544E0500150288017284297100000最大的NP10259（3）计算枕上动压力RDDF8型内燃机车，计算枕上压力时，速度系数及偏载系数为280159630V172PHA、曲线考虑横向水平力系数，则NPKARD1268091025268050B、直线不考虑横向水平力系数，则NPKARD2361079105268580（4）轨枕弯矩计算对于I型轨枕轨的轨底宽MKGEMAL/70,95,0,51，代入上式MB150轨下截面正弯矩M82G/1DGRBEM）（N枕中截面负弯矩4L1CCDA（A、曲线地段GMMKNMNG18059761326592MRCD1407580262684ALC（B、直线地段GM1068972367810952GMMN576340292610452041CDCMRALM3、道床顶面强度检算对于I型轨枕，中部600MM不支承在道床上时，中部支承在道床上时，有效支承长度，轨枕底面平均宽度为，因此按照上述两种支承情况可算得道ME175/MB275床顶面压应力为曲线道床顶面压应力为MPABERD4170695271680/或MD31/B，满足强度要求。MPA50B4、路基顶面道床压应力的检算MH41963COT27CT1。E085TT/2由原始资料可知，道床计算厚度。所以，该轨道路基顶面处于与之H31H2间，按式计算。则路基顶面应力A、曲线地段MPAHERD120835TAN173502268TAN/）（B、直线地段PATTHERD107835AN17350226AN/）（允许应力，因此，满足强度要求MPTMPAPA150120HH7T5、无缝线路允许温度力、允许温升计算及锁定轨温确定（1）无缝线路结构计算参数因为，由已知资料得安全系数K13MPAS405则SAKS531要求钢轨所承受的各种应力总和不超过规定的容许值，即SCTDSS在R500M的曲线制动地段钢轨的线膨胀系数，钢轨承受的制动应力允许升温C1TCEAC055D1871208431允许降温STCD0552366（2）无缝线路稳定性条件计算试算曲线地段