迈达斯.docx

1、迈达斯混凝土连续梁桥设计计算一、设计计算资料本设计为4x20.1m混凝土连续梁桥，桥面布置净-8+20.75m人行道，主梁C30混凝土，桥面铺装采用12cm沥青混凝土，桥位年平均气温7.6，最高月平均气温28.7，最低为-20.5。设计荷载公路-I级，人群3.5kN/m2。结构构造见下图。图1 桥梁横断面图（单位：cm）图2 T型梁尺寸图（单位：cm）二、内容要求 1给出结构有限元计算模型。2主梁内力及变形计算1）结构重力引起主梁内力及变形计算（人行道荷载12.35KN/m）。2）活载引起主梁内力及变形计算（为简化起见，冲击系数区1.2,荷载横向分布系数取0.6）。3) 均匀温度作用引起主梁内

2、力及变形计算（成桥温度15）。要求给出各工况单独作用下主梁内力图及组合工况作用下的内力包络图，并分别以表格形式列出各工况控制截面内力值和变形值。1有限元计算模型如下：将4跨连续梁划分成81个节点，80个单元。各个节点坐标如下：节点X（m）Y(m)Z(m)节点X(m)Y(m)Z(m)10004241.2050021.005004342.210032.01004443.2150043.015004544.220054.02004645.2250065.025004746.230076.03004847.2350087.035004948.240098.04005049.24500109.04500

3、5150.25001110.05005251.255001211.055005352.26001312.06005453.265001413.065005554.27001514.07005655.275001615.075005756.28001716.08005857.285001817.085005958.29001918.09006059.295002019.095006160.3002120.1006261.305002221.105006362.31002322.11006463.315002423.115006564.32002524.12006665.325002625.125

4、006766.33002726.13006867.335002827.135006968.34002928.14007069.345003029.145007170.35003130.15007271.355003231.155007372.36003332.16007473.365003433.165007574.37003534.17007675.375003635.175007776.38003736.18007877.385003837.185007978.39003938.19008079.395004039.195008180.4004140.200荷载组合:恒载=自重+铺装+人行

5、道板 活载=车辆+人群 综合作用1=恒载+活载+降温 综合作用2=恒载+活载+升温2主梁内力及变形 以各支点及跨中截面作为连续梁的控制截面,即控制截面处节点号依次为1,6,11,16,21,26,31,36,41,46,51,56,61,66,71,76,81.1）各工况单独作用下主梁内力图及组合工况作用下的内力包络图（1）自重作用下剪力图和弯矩图：（2）铺装作用下剪力图和弯矩图：（3）人行道板作用下剪力图和弯矩图：（4）人群作用下剪力图和弯矩图：（5）车辆作用下剪力图和弯矩图：（6）恒载作用下剪力图和弯矩图：（7）活载作用下剪力图和弯矩图：（8）综合作用1作用下剪力图和弯矩图：（9）综合作用

6、2作用下剪力图和弯矩图：2）各工况控制截面内力值计算结果如下:单元荷载位置轴向 (kN)剪力-y (kN)剪力-z (kN)扭矩 (kN*m)弯矩-y (kN*m)弯矩-z (kN*m)1自重I100-77.810005自重J600-26.030260.8906自重I600-26.030260.89010自重J110025.760261.57011自重I110025.760261.57015自重J160077.5402.04016自重I160077.5402.04020自重J2100129.320-517.7021自重I2100-103.570-346.94025自重J2600-51.7804

7、3.37026自重I2600-51.78043.37030自重J310000173.47031自重I310000173.47035自重J360051.78043.37036自重I360051.78043.37040自重J4100103.570-346.94041自重I4100-103.570-346.94045自重J4600-51.78043.37046自重I4600-51.78043.37050自重J510000173.47051自重I510000173.47055自重J560051.78043.37056自重I560051.78043.37060自重J6100103.570-346.940

8、61自重I6100-103.570-346.94065自重J6600-51.78043.37066自重I6600-51.78043.37070自重J710000173.47071自重I710000173.47075自重J760051.78043.37076自重I760051.78043.37080自重J8100103.570-346.9401铺装I100-166.720005铺装J600-55.770558.9906铺装I600-55.770558.99010铺装J110055.190560.45011铺装I110055.190560.45015铺装J1600166.1404.37016铺装I

9、1600166.1404.37020铺装J2100277.090-1109.24021铺装I2100-221.90-743.38025铺装J2600-110.95092.92026铺装I2600-110.95092.92030铺装J310000371.69031铺装I310000371.69035铺装J3600110.95092.92036铺装I3600110.95092.92040铺装J4100221.90-743.38041铺装I4100-221.90-743.38045铺装J4600-110.95092.92046铺装I4600-110.95092.92050铺装J510000371.6

10、9051铺装I510000371.69055铺装J5600110.95092.92056铺装I5600110.95092.92060铺装J6100221.90-743.38061铺装I6100-221.90-743.38065铺装J6600-110.95092.92066铺装I6600-110.95092.92070铺装J710000371.69071铺装I710000371.69075铺装J7600110.95092.92076铺装I7600110.95092.92080铺装J8100221.90-743.3801人行道板I100-93.250005人行道板J600-31.190312.66

11、06人行道板I600-31.190312.66010人行道板J110030.870313.47011人行道板I110030.870313.47015人行道板J160092.9302.44016人行道板I160092.9302.44020人行道板J2100154.980-620.43021人行道板I2100-124.120-415.79025人行道板J2600-62.06051.97026人行道板I2600-62.06051.97030人行道板J310000207.9031人行道板I310000207.9035人行道板J360062.06051.97036人行道板I360062.06051.97

12、040人行道板J4100124.120-415.79041人行道板I4100-124.120-415.79045人行道板J4600-62.06051.97046人行道板I4600-62.06051.97050人行道板J510000207.9051人行道板I510000207.9055人行道板J560062.06051.97056人行道板I560062.06051.97060人行道板J6100124.120-415.79061人行道板I6100-124.120-415.79065人行道板J6600-62.06051.97066人行道板I6600-62.06051.97070人行道板J710000

13、207.9071人行道板I710000207.9075人行道板J760062.06051.97076人行道板I760062.06051.97080人行道板J8100124.120-415.7901车辆I100264.80005车辆J600157.710742.3806车辆I600157.710742.38010车辆J1100169.850737.32011车辆I1100169.850737.32015车辆J1600247.690259.08016车辆I1600247.690259.08020车辆J2100302.5701045.59021车辆I2100283.680766.79025车辆J26

14、00214.980286.7026车辆I2600214.980286.7030车辆J3100118.210562.31031车辆I3100118.210562.31035车辆J3600214.980286.7036车辆I3600214.980286.7040车辆J4100283.680766.79041车辆I4100283.680766.79045车辆J4600214.980286.7046车辆I4600214.980286.7050车辆J5100118.210562.31051车辆I5100118.210562.31055车辆J5600214.980286.7056车辆I5600214.98

15、0286.7060车辆J6100283.680766.79061车辆I6100283.680766.79065车辆J6600214.980286.7066车辆I6600214.980286.7070车辆J7100118.210562.31071车辆I7100118.210562.31075车辆J7600214.980286.7076车辆I7600214.980286.7080车辆J8100283.680766.7901活载I100304.440005活载J600170.970875.306活载I600170.970875.3010活载J1100182.970870.58011活载I110018

16、2.970870.58015活载J1600287.190260.11016活载I1600287.190260.11020活载J2100368.4501309.34021活载I2100336.450943.55025活载J2600241.360308.79026活载I2600241.360308.79030活载J3100118.210650.68031活载I3100118.210650.68035活载J3600241.360308.79036活载I3600241.360308.79040活载J4100336.450943.55041活载I4100336.450943.55045活载J460024

17、1.360308.79046活载I4600241.360308.79050活载J5100118.210650.68051活载I5100118.210650.68055活载J5600241.360308.79056活载I5600241.360308.79060活载J6100336.450943.55061活载I6100336.450943.55065活载J6600241.360308.79066活载I6600241.360308.79070活载J7100118.210650.68071活载I7100118.210650.68075活载J7600241.360308.79076活载I7600241

18、.360308.79080活载J8100336.450943.5501综合作用1I100709.770005综合作用1J600306.5502234.3406综合作用1I600306.5502234.34010综合作用1J1100317.1502233.16011综合作用1I1100317.1502233.16015综合作用1J1600691.110270.74016综合作用1I1600691.110270.74020综合作用1J21001042.1304006.18021综合作用1I2100875.9502750.89025综合作用1J2600511.110534.71026综合作用1I2600511.110534.71030综合作用1J3100118.2101554.35031综合作用1I3100118.2101554.35035综合作用1J3600511.110534.71036综合作用1I3600511.110534.71040综合作用1J4100875.9502750.89041综合作用1I41