混凝土本构数据.docx

1、混凝土本构数据问答附录一湖南省长沙市动力弹塑性分析的材料非线性参数取值一 混凝土材料: 混凝土材料采用塑性损伤模型(Plastic-Damaged Model)(1).根据GB 50010-2002 混凝土强度分类 如下:C25, C30, C35, C40, C45, C50, C55, C60, C65, C70, C75, C80 (1) 弹性模量:按(2)表4.1.5, 单位kN/m2 表1弹性模量C25C30C35C40C45C502.8E73E73.15E73.25E73.35E73.25E7C55C60C65C70C75C803.55E73.6E73.65E73.7E73.75E

2、73.8E7(2) 泊松比, 统一取 0.2 (参阅(2)的4.1.8)(3) 剪切模量: 按(2)表4.1.5中的0.4 倍采用(参阅(2)的4.1.8).(4) 密度(2): 2.5 T/m3(5) 单轴应力-应变关系混凝土材料轴心抗压和轴心抗拉强度标准值按(2)表4.1.3采用.A: 单轴受压, 其应力-应变关系方程如下(参阅(2)C.2.1, P206): 当时 当时 在 0 0.7fc 的应力范围为线弹性, 其弹性模量按表1. 大于0.7fc为塑性范围, 应力-塑性应变关系如下:B: 单轴受拉, 其应力-应变关系方程如下(参阅(2)C.2.2, P208): 当时 当时 在 0 ft

3、 的应力范围为线弹性, 其弹性模量按表1. 大于ft为塑性范围, 应力-塑性应变关系如下: 据此得到下列各等级混凝土材料在拉和压屈服后的应力(kN/m2)-塑性应变关系:*Material, Name=C25*Concrete compression hardening 应力(kN/m2) 塑性应变11690., 016700., 0.00080869313239.8, 0.002337399841.27, 0.003863897674.36, 0.00534646248.49, 0.006802455255.01, 0.008243054527.98, 0.009674143974.73,

4、0.0110993540.4, 0.0125197*Concrete tension stiffening1797.8, 01780., 0.0000255151191.06, 0.000135635859.483, 0.000236563684.527, 0.000331898576.455, 0.000424844502.469, 0.000516573448.233, 0.000607596406.519, 0.000698173373.278, 0.000788446131.57, 0.00355876 *Material, Name=C30*Concrete compression

5、hardening14070., 020100., 0.00080189814636.6, 0.0024559110073.3, 0.004079927500.85, 0.005637565931.13, 0.007161794889.86, 0.008668394153.49, 0.01016483607., 0.0116553186.09, 0.0131409*Concrete tension stiffening2030.1, 02010., 0.00002825631232.19, 0.00014944849.073, 0.000257466660.524, 0.00035900854

6、8.371, 0.000458002473.404, 0.000555757419.357, 0.000652815378.298, 0.00074944345.892, 0.000845777118.271, 0.00380631 *Material, Name=C35*Concrete compression hardening16380., 023400., 0.00078943115814.6, 0.0025625310267.4, 0.004270927408.77, 0.005893955749.74, 0.007478914682.74, 0.009045073943.69, 0

7、.01060083403.29, 0.01215032991.69, 0.0136956*Concrete tension stiffening2222., 02200., 0.00003014271253.05, 0.000160189834.315, 0.000273466638.442, 0.000379668524.938, 0.000483255450.278, 0.000585609397.041, 0.000687284356.924, 0.000788541325.457, 0.000889524109.188, 0.00399589 *Material, Name=C40*C

8、oncrete compression hardening18760., 026800., 0.00076481416909.7, 0.0026585610469.9, 0.004446147378.84, 0.006130685650.07, 0.00777334562.41, 0.00939623819.83, 0.01100853282.34, 0.01261442876.02, 0.0142164*Concrete tension stiffening2413.9, 02390., 0.00003094221263.67, 0.000170079815.537, 0.000288349

9、615.229, 0.000398993501.733, 0.000506966428.08, 0.000613712376.039, 0.000719794337.082, 0.000825474306.681, 0.00093089101.338, 0.00417611 *Material, Name=C45*Concrete compression hardening20720., 029600., 0.0007501517743.1, 0.0027378210639.8, 0.004583597386.84, 0.006314435609.46, 0.008001224506.18,

10、0.009667883759.48, 0.01132393222.27, 0.01297372817.97, 0.0146195*Concrete tension stiffening2535.1, 02510., 0.00003230441265.87, 0.000176673802.219, 0.000297743600.343, 0.000410999487.385, 0.0005216414.624, 0.000631002363.47, 0.000739759325.314, 0.000848128295.619, 0.00095624496.8983, 0.0042863 *Mat

11、erial, Name=C50*Concrete compression hardening22680., 032400., 0.00073988518515.2, 0.0028213610800.8, 0.004723987406.35, 0.006501395586.72, 0.008233144469.4, 0.009944553718.4, 0.01164533180.69, 0.01333992777.43, 0.0150306*Concrete tension stiffening2666.4, 02640., 0.00003365911264.64, 0.000183705786

12、.735, 0.000307738584.088, 0.000423793472.094, 0.00053722400.477, 0.000649477350.37, 0.00076111313.124, 0.00087237284.214, 0.00098338992.4472, 0.00440455 *Material, Name=C55*Concrete compression hardening24850., 035500., 0.0007274519297., 0.0029113210959.8, 0.004873627429.12, 0.006700535569.63, 0.008

13、480364439.05, 0.01023973683.89, 0.01198843145.52, 0.0137312743.03, 0.0154698*Concrete tension stiffening2767.4, 02740., 0.00003522171261.67, 0.00018927774.457, 0.000315399571.752, 0.000433514460.697, 0.000549047390.039, 0.000663442340.767, 0.000777235304.231, 0.000890669275.923, 0.0010038789.2809, 0

14、.00449368 *Material, Name=C60*Concrete compression hardening26950., 038500., 0.00070060619978.3, 0.0029851511087.9, 0.005002157444.03, 0.006873425552.82, 0.0086964412.21, 0.01049773654.2, 0.01228883115.66, 0.01407392714.07, 0.0158551*Concrete tension stiffening2878.5, 02850., 0.00003563831256.67, 0.000194702760.756, 0.000323283558.434, 0.000443708448.564, 0.000561565379.016, 0.000678302330.681, 0.000794449294.926, 0.000910248267.272, 0.0010258286.0337, 0.00458981 *Material, Name=C65*Concrete compress