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1、【精品文档】如有侵权，请联系网站删除，仅供学习与交流湟水河大桥计算书-双曲拱计算书.精品文档.湟水河大桥加固后计算分析一、计算参数本次加固设计所采用的混凝土标号为C30钢筋混凝土，但考虑原设计中混凝土标号较低，并且不同标号的新老混凝土弹性模量不一致的问题，从偏于安全的角度出发，所以在本计算中均按低标号混凝土进行分析。1、混凝土主拱圈采用25号混凝土，有关参数如下：弹性模量Ec2.80104MPa标准抗压强度fck16.7MPa标准抗拉强度ftk1.78MPa设计抗压强度fcd11.5MPa设计抗拉强度ftd1.23MPa平均加载龄期7d瞬时徐变系数0.8滞后徐变系数0.4环境相对湿度采用70%
2、终极龄期按3600天计徐变系数终极值2.3收缩应变终极值0.00015砼计算容重25kNm3拱上小拱圈采用20号混凝土，有关参数如下：弹性模量Ec2.55104MPa标准抗压强度fck13.4MPa标准抗拉强度ftk1.54MPa设计抗压强度fcd9.2MPa设计抗拉强度ftd1.06MPa平均加载龄期7d瞬时徐变系数0.8滞后徐变系数0.4环境相对湿度采用70%终极龄期按3600天计徐变系数终极值2.3收缩应变终极值0.00015砼计算容重25kNm3立柱采用15号混凝土，有关参数如下：弹性模量Ec2.20104MPa标准抗压强度fck10.0MPa标准抗拉强度ftk1.27MPa设计抗压强
3、度fcd6.90MPa设计抗拉强度ftd0.88MPa混凝土计算容重24kNm3桥面铺装采用30号混凝土，有关参数如下：弹性模量Ec3.00104MPa标准抗压强度fck20.1MPa标准抗拉强度ftk2.01MPa设计抗压强度fcd13.80MPa设计抗拉强度ftd1.39MPa混凝土计算容重25kNm32、普通钢筋普通钢筋采用I级和II级钢筋，有关参数如下：I级钢筋：弹性模量Eg2.1105MPa钢筋标准强度fsk235MPaII级钢筋：弹性模量Eg2.0105MPa钢筋标准强度fsk335MPa二、计算荷载1、恒载考虑结构自重、混凝土收缩徐变、基础不均匀沉降等；考虑栏杆、桥面铺装以及拱上
4、填料等二期恒载；2.活载设计荷载：汽车-20级，双向2车道；挂车-100；横向折减系数为1.00；纵向折减系数为1.0；主梁活载偏载系数取1.1；3.车道荷载冲击系数按公路桥涵设计通用规范执行。4.风荷载设计基本风压强度W0800Pa。同时又按平均最大风速22m/s考虑，结合公路桥涵设计通用规范计算。以最不利值控制设计。5.温度荷载桥梁合拢温度按1015考虑，偏于安全考虑结构整体升温按20计算, 降温按25（不含混凝土收缩徐变影响）计算。桥面板升温根据公路规范取值。混凝土线膨胀系数为0.00001，斜拉索线膨胀系数为0.000012。以上温度模式按实际最不利情况组合。三、上部结构计算分析1、计
5、算模型将主桥结构L=45m拱桥作为分析对象，主要用于纵向静力计算，对其内力、应力以及变形状况进行分析。本模型采用通用有限元MIDAS/Civil程序进行计算。按照主桥的实际构造进行结构离散，共划分单元344个、343个节点。计算模型3、荷载组合本次计算荷载组合主要为：（1）、组合I：（正常使用极限状态下短期效应组合）：荷载分项系数组合系数自重及收缩徐变1.00汽车-201.00（2）、组合II：（正常使用极限状态下长期效应组合）：荷载分项系数组合系数自重及收缩徐变1.00挂-1001.00（3）、组合III：（正常使用极限状态下效应标准值组合）：荷载分项系数组合系数自重及收缩徐变1.00非均匀
6、温度变化1.00均匀温度变化(整体升温)1.00均匀温度变化(整体降温)1.00支座强迫位移1.00汽车-201.00（4）、组合IV：（正常使用极限状态下效应标准值组合）：荷载分项系数组合系数自重及收缩徐变1.00非均匀温度变化1.00均匀温度变化(整体升温)1.00均匀温度变化(整体降温)1.00支座强迫位移1.00挂-1001.00（5）、组合V：（承载能力极限状态下）：荷载分项系数组合系数自重及收缩徐变1.20非均匀温度变化1.30均匀温度变化(整体升温)1.30均匀温度变化(整体降温)1.30支座强迫位移1.30汽车-201.40（6）、组合VI：（承载能力极限状态下）：荷载分项系数
7、组合系数自重及收缩徐变1.20非均匀温度变化1.30均匀温度变化(整体升温)1.30均匀温度变化(整体降温)1.30支座强迫位移1.30挂车-1001.104.计算结果（1）、截面特性* A : 3.292200918263* Asx : 2.469998117919* Asy : 1.194533837100* Ixx : 0.238719260320* Iyy : 5.926861524582* Ixy : -0.000000029802* J : 0.660258540655* (+)Cx : 2.370000000010* (-)Cx : 2.369999999991* (+)Cy :
8、 0.651498434812* (-)Cy : 0.388501565188* (+)1/Sx : 9.927979823799* (-)1/Sx : 9.927979823719* (+)1/Sy : 0.109923005980* (-)1/Sy : 0.065549290055主拱圈跨中截面（H=2.6m）（2）、截面内力恒载弯矩图恒载轴力图恒载剪力图恒载内力一览表单 元荷 载位 置轴 向 (kN)剪 力-z (kN)弯 矩-y (kN*m)1恒载I-16993.761326.692535.62恒载I-16951.17622.81364.243恒载I-16496.981254.24-4
9、2.234恒载I-16502.54840.96-616.055恒载I-16470.01326.96-1619.276恒载I-16423.56-154.69-2040.777恒载I-16082.48526.15-1773.628恒载I-16073.74214.17-2010.499恒载I-16035.82-159.09-2298.4410恒载I-15990.49-529.98-2191.6411恒载I-15816.65-257.91-1883.7612恒载I-15755.05-390.42-1745.9313恒载I-15678.11-484.34-1450.714恒载I-15607.28-552
10、.04-1061.115恒载I-15542.77-596.28-604.4316恒载I-15484.69-619.11-104.6717恒载I-15433-623.94416.5818恒载I-15377.85-517.87941.3419恒载I-15340.44-491.111358.3420恒载I-15309.01-453.981747.7621恒载I-15283.5-406.972099.4522恒载I-15263.78-351.852403.723恒载I-15249.72-290.672652.5724恒载I-15241.18-229.42840.1225恒载I-15239.6223.5
11、42966.326恒载I-15244.9784.332840.1227恒载I-15255.85145.522652.5728恒载I-15272.31200.632403.729恒载I-15294.44247.652099.4530恒载I-15322.36284.771747.7631恒载I-15356.12311.541358.3432恒载I-15407.42417.61941.3433恒载I-15455.02412.77416.5834恒载I-15508.77389.94-104.6735恒载I-15568.64345.7-604.4336恒载I-15634.49278.01-1061.13
12、7恒载I-15706.08184.08-1450.738恒载I-15779.12114.11-1749.7939恒载I-15957.68415.27-1700.0640恒载I-15999.2144.39-2191.6441恒载I-16033.24-328.87-2298.4442恒载I-16064.97-572.41-2010.4943恒载I-16376.8339.99-1935.6644恒载I-16418.35-441.67-2040.7745恒载I-16445.51-955.66-1619.2746恒载I-16472.76-1299.74-616.0547恒载I-16885.92-737.
13、52-418.2748恒载I-16898.22-1476.52364.2449恒载I0-13.5-0.6850恒载I-0.01-4.5-0.0751恒载I0-4.5-0.0852恒载I0-9-0.353恒载I0-9-0.354恒载I0-9-0.355恒载I0-9-0.356恒载I0-9-0.357恒载I0-9-0.358恒载I0-9-0.359恒载I0-9-0.360恒载I0-9-0.361恒载I0-9-0.362恒载I0-9-0.363恒载I0-9-0.364恒载I0-9-0.365恒载I0-9-0.366恒载I0-4.5-0.0867恒载I0-4.5-0.0768恒载I0-4.5-0.07
14、69恒载I0-4.5-0.0870恒载I0-4.5-0.0871恒载I0-4.5-0.0872恒载I0-9-0.373恒载I0-9-0.374恒载I0-9-0.375恒载I0-9-0.376恒载I0-9-0.377恒载I0-9-0.378恒载I0-9-0.379恒载I0-9-0.380恒载I0-9-0.381恒载I0-9-0.382恒载I0-9-0.383恒载I0-9-0.384恒载I0-9-0.385恒载I0-9-0.386恒载I0.01-4.5-0.0887恒载I0.02-4.5-0.0888恒载I0-4.35-0.0789恒载I0-4.65-0.0890恒载I0.03-4.5-0.089
15、1恒载I0.01-4.5-0.0892恒载I0-9-0.393恒载I0-9-0.394恒载I0-9-0.395恒载I0-9-0.396恒载I0-9-0.397恒载I0-9-0.398恒载I0-9-0.399恒载I0-9-0.3100恒载I0-9-0.3101恒载I0-9-0.3102恒载I0-9-0.3103恒载I0-9-0.3104恒载I0-9-0.3105恒载I0-9-0.3106恒载I0.01-4.5-0.08107恒载I0.03-4.5-0.08108恒载I0-4.5-0.07109恒载I0-31.36-3.64110恒载I0-45-7.5111恒载I0-45-7.5112恒载I0-4
16、5-7.5113恒载I0-45-7.5114恒载I0-45-7.5115恒载I0-45-7.5116恒载I0-45-7.5117恒载I0-45-7.5118恒载I0-45-7.5119恒载I0-45-7.5120恒载I0-45-7.5121恒载I0-45-7.5122恒载I0-45-7.5123恒载I0-45-7.5124恒载I0-45-7.5125恒载I0-45-7.5126恒载I0-45-7.5127恒载I0-45-7.5128恒载I0-45-7.5129恒载I0-45-7.5130恒载I0-45-7.5131恒载I0-45-7.5132恒载I0-45-7.5133恒载I0-45-7.51
17、34恒载I0-45-7.5135恒载I0-45-7.5136恒载I0-31.36-3.64137恒载I0-4.5-0.07138恒载I0.03-4.5-0.08139恒载I0.01-4.5-0.08140恒载I0-9-0.3141恒载I0-9-0.3142恒载I0-9-0.3143恒载I0-9-0.3144恒载I0-9-0.3145恒载I0-9-0.3146恒载I0-9-0.3147恒载I0-9-0.3148恒载I0-9-0.3149恒载I0-9-0.3150恒载I0-9-0.3151恒载I0-9-0.3152恒载I0-9-0.3153恒载I0-9-0.3154恒载I0.01-4.5-0.08
18、155恒载I0.03-4.5-0.08156恒载I0-4.65-0.08157恒载I0-4.35-0.07158恒载I0.02-4.5-0.08159恒载I0.01-4.5-0.08160恒载I0-9-0.3161恒载I0-9-0.3162恒载I0-9-0.3163恒载I0-9-0.3164恒载I0-9-0.3165恒载I0-9-0.3166恒载I0-9-0.3167恒载I0-9-0.3168恒载I0-9-0.3169恒载I0-9-0.3170恒载I0-9-0.3171恒载I0-9-0.3172恒载I0-9-0.3173恒载I0-9-0.3174恒载I0-4.5-0.08175恒载I0-4.5
19、-0.08176恒载I0-4.5-0.08177恒载I0-4.5-0.07178恒载I0-4.5-0.08179恒载I0-4.5-0.08180恒载I0-9-0.3181恒载I0-9-0.3182恒载I0-9-0.3183恒载I0-9-0.3184恒载I0-9-0.3185恒载I0-9-0.3186恒载I0-9-0.3187恒载I0-9-0.3188恒载I0-9-0.3189恒载I0-9-0.3190恒载I0-9-0.3191恒载I0-9-0.3192恒载I0-9-0.3193恒载I0-9-0.3194恒载I0-4.5-0.08195恒载I-0.01-4.5-0.07196恒载I0-13.5-
20、0.67197恒载I-404.08127.4172.44198恒载I-364.2849.36-2.41199恒载I-336.833.39-15.2200恒载I-295.07-24.22-19.79201恒载I-261.78-34.22-15.82202恒载I-235.7-34.15-9.92203恒载I-216.42-27.75-4.51204恒载I-203.75-17.42-0.74205恒载I-197.54-4.970.8206恒载I-197.748.05-0.18207恒载I-204.2720.14-3.77208恒载I-217.0829.73-9.88209恒载I-236.134.97
21、-18.21210恒载I-261.1933.36-28.19211恒载I-292.0421.04-38.65212恒载I-327.54-9.94-47.19213恒载I-363.57-49.69-47.38214恒载I-371.7-133.23-36.66215恒载I-366.4123.29-13.19216恒载I-301.77-42.04-29.15217恒载I-258.68-75.06-20.03218恒载I-203.19-86.022.6219恒载I-161.12-80.3723.65220恒载I-129.41-65.2440.73221恒载I-106.91-44.253.06222恒载
22、I-93.03-19.5860.29223恒载I-87.446.8462.28224恒载I-89.9733.5258.93225恒载I-100.5758.9950.24226恒载I-119.2681.6536.22227恒载I-146.1999.6216.95228恒载I-181.6110.36-7.41229恒载I-225.93109.87-36.53230恒载I-279.9290.03-69.61231恒载I-33557.29-104.5232恒载I-370.79-22.52-119.39233恒载I-384.64-57.87-158.95234恒载I-299.13-125.21-129.
23、04235恒载I-240.89-156.35-99.99236恒载I-169.98-162.32-49.14237恒载I-116.02-150.3-7.01238恒载I-74.66-127.927.01239恒载I-44.2-98.8953.28240恒载I-23.78-65.7272.04241恒载I-12.92-30.283.41242恒载I-11.416.0987.49243恒载I-19.1841.6784.3244恒载I-36.3274.9973.8245恒载I-63.11104.2255.94246恒载I-100.06126.9530.55247恒载I-148.14139.42-2.
24、59248恒载I-209.33134.1-43.83249恒载I-273.65113.51-94.02250恒载I-325.3547.87-122.38251恒载I-379.59-57.72-151.92252恒载I-295.11-123.37-122.41253恒载I-237.28-153.8-93.8254恒载I-166.93-159.12-43.84255恒载I-113.52-146.65-2.59256恒载I-72.72-123.9330.55257恒载I-42.82-94.755.94258恒载I-22.94-61.3873.8259恒载I-12.64-25.7984.3260恒载I
25、-11.6910.587.49261恒载I-20.0146.0183.41262恒载I-37.779.1972.04263恒载I-65.04108.253.28264恒载I-102.55130.627.01265恒载I-151.19142.62-7266恒载I-212.94136.65-49.14267恒载I-277.67115.36-100.21268恒载I-329.7948.02-129269恒载I-425.6412.67-109.43270恒载I-356.46-67.15-119.41271恒载I-307.87-109.73-104.28272恒载I-244.72-129.58-69.6
26、1273恒载I-195.06-130.06-36.53274恒载I-155.81-119.32-7.41275恒载I-125.76-101.3516.95276恒载I-104.34-78.6936.22277恒载I-91.21-53.2350.24278恒载I-86.2-26.5458.93279恒载I-89.26-0.1262.28280恒载I-100.4224.560.29281恒载I-119.845.5453.06282恒载I-147.6560.6740.73283恒载I-184.466.3223.65284恒载I-230.7355.362.6285恒载I-280.3132.19-20.
27、26286恒载I-311.55-33.14-29.15287恒载I-426.55123.3835.92288恒载I-385.0339.84-36.65289恒载I-355.49-9.77-47.16290恒载I-310.83-40.74-47.19291恒载I-274.66-53.07-38.65292恒载I-245.71-54.67-28.19293恒载I-223.57-49.44-18.21294恒载I-208.03-39.84-9.88295恒载I-198.97-27.75-3.77296恒载I-196.31-14.74-0.18297恒载I-199.98-2.290.8298恒载I-2
28、09.938.05-0.74299恒载I-226.0814.45-4.51300恒载I-248.3114.51-9.92301恒载I-276.294.51-15.82302恒载I-308.88-23.09-19.79303恒载I-342.82-59.21-15.42304恒载I-349.23-137.26-2.42305恒载I-756.46196.84-585.97306恒载I-686.51196.84-459.66307恒载I-616.56196.84-333.35308恒载I-546.6196.84-207.04309恒载I-476.65196.84-80.73310恒载I-406.691
29、96.8445.58311恒载I-921.72-109.15293.27312恒载I-874.99-109.15210.5313恒载I-828.27-109.15127.73314恒载I-781.54-109.1544.97315恒载I-877.71-76.69105.79316恒载I-832.51-76.6949.54317恒载I-439.82-11.01-185.69318恒载I-428.66-11.01-187.69319恒载I-439.8211.01185.69320恒载I-428.6611.01187.69321恒载I-877.7176.69-105.79322恒载I-832.517
30、6.69-49.54323恒载I-921.72109.15-293.27324恒载I-874.99109.15-210.5325恒载I-828.27109.15-127.73326恒载I-781.54109.15-44.97327恒载I-756.46-196.84585.97328恒载I-686.51-196.84459.66329恒载I-616.56-196.84333.35330恒载I-546.6-196.84207.04331恒载I-476.65-196.8480.73332恒载I-406.69-196.84-45.58333恒载I-196.84-393.19-44.9334恒载I-19
31、6.84407.0235.92335恒载I-87.69-365.52-49.75336恒载I-87.69425.55-109.49337恒载I-11.01-397.97-200.14338恒载I-11.01392.8-151.98339恒载I-11.01-392.8-191.26340恒载I-11.01397.97-159.01341恒载I-87.69-425.55-150.61342恒载I-87.69365.52-13.19343恒载I-196.84-407.02-4.78344恒载I-196.84393.1973.06恒载+汽车-20弯矩图恒载+汽车-20轴力图恒载+汽车-20剪力图恒载+
32、汽车-20内力一览表单 元荷 载位 置轴 向 (kN)剪 力-z (kN)弯 矩-y (kN*m)1恒载+汽车(最大)I-16991.831727.913901.982恒载+汽车(最大)I-16948.83955.631172.293恒载+汽车(最大)I-16496.591572.05625.874恒载+汽车(最大)I-16502.141125.89-77.145恒载+汽车(最大)I-16469.59559.03-1311.126恒载+汽车(最大)I-16423.1237.39-1679.147恒载+汽车(最大)I-16082.46759.71-1179.788恒载+汽车(最大)I-16073.73422.22-1465.649恒载+汽车(最大)I-16035.8113.63-1810.7110恒载+汽车(最大)I-15990.47-394.59-1541.7911恒载+汽车(最大)I-15816.61-69.98-892.4412恒载+汽车(最大)I-15755.02-204.93-725.7613恒载+汽车(最大)I-15678.08-298.42-373.4214恒载+汽车(最大)