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1、.附录一动力弹塑性分析的材料非线性参数取值一混凝土材料:(1)混凝土材料采用塑性损伤模型(Plastic-DamagedModel).根据GB50010-2002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:(2)2按表4.1.5,单位kN/m表1弹性模量C25C30C35C40C45C502.8E73E73.15E73.25E73.35E73.25E7C55C60C65C70C75C803.55E73.6E73.65E73.7E73.75E73.8E7(2)(2)泊松比,统一取0.2(参阅
2、的4.1.8)(2)(2)(3)剪切模量:按表4.1.5中的0.4倍采用(参阅的4.1.8).(2)3(4)密度:2.5T/m(5)单轴应力-应变关系(2)混凝土材料轴心抗压和轴心抗拉强度标准值按表4.1.3采用.(2)A:单轴受压,其应力-应变关系方程如下(参阅C.2.1,P206):当x1时23yα(32α)x(α2)xaaa当x1时xy2αd(x1)xεxεcσyfc..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:inσcεcεcE0B:单轴受拉,其应力-应变关系方程如下(参阅(2)C.2.2,P208):当
3、x1时6y1.2x0.2x当x1时xy1.7αt(x1)xεxεtσyft在0–ft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:ckσtεεttE02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/m)-塑性应变关系:*Material,Name=C25*Concretecompressionhardening2应力(kN/m)塑性应变11690.,016700.,0.00080869313239.8,0.002337399841.27,0.003863897674.36,0.00534646248.49,0.006802455
4、255.01,0.008243054527.98,0.009674143974.73,0.0110993540.4,0.0125197*Concretetensionstiffening1797.8,01780.,0.0000255151191.06,0.000135635..859.483,0.000236563684.527,0.000331898576.455,0.000424844502.469,0.000516573448.233,0.000607596406.519,0.000698173373.278,0.000788446131.57,0.00355876*
5、Material,Name=C30*Concretecompressionhardening14070.,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*Concretetensionstiffening2030.1,02010.,0.00002825631232.19,0.00014944849.073,0.
6、000257466660.524,0.000359008548.371,0.000458002473.404,0.000555757419.357,0.000652815378.298,0.00074944345.892,0.000845777118.271,0.00380631*Material,Name=C35*Concretecompressionhardening16380.,023400.,0.00078943115814.6,0.0025625310267.4,0.004270927408.77,0.00589395..5749.74,0.00747891468
7、2.74,0.009045073943.69,0.01060083403.29,0.01215032991.69,0.0136956*Concretetensionstiffening2222.,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.
