混凝土本构数据.docx

混凝土本构数据.docx

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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-DamagedModel）

（1）.

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:

按

（2）表4.1.5,单位kN/m2

表1弹性模量

C25

C30

C35

C40

C45

C50

2.8E7

3E7

3.15E7

3.25E7

3.35E7

3.25E7

C55

C60

C65

C70

C75

C80

3.55E7

3.6E7

3.65E7

3.7E7

3.75E7

3.8E7

（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）:

2.5T/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

*Concretecompressionhardening

应力（kN/m2）塑性应变

11690.,0

16700.,0.000808693

13239.8,0.00233739

9841.27,0.00386389

7674.36,0.0053464

6248.49,0.00680245

5255.01,0.00824305

4527.98,0.00967414

3974.73,0.011099

3540.4,0.0125197

*Concretetensionstiffening

1797.8,0

1780.,0.000025515

1191.06,0.000135635

859.483,0.000236563

684.527,0.000331898

576.455,0.000424844

502.469,0.000516573

448.233,0.000607596

406.519,0.000698173

373.278,0.000788446

131.57,0.00355876

*Material,Name=C30

*Concretecompressionhardening

14070.,0

20100.,0.000801898

14636.6,0.00245591

10073.3,0.00407992

7500.85,0.00563756

5931.13,0.00716179

4889.86,0.00866839

4153.49,0.0101648

3607.,0.011655

3186.09,0.0131409

*Concretetensionstiffening

2030.1,0

2010.,0.0000282563

1232.19,0.00014944

849.073,0.000257466

660.524,0.000359008

548.371,0.000458002

473.404,0.000555757

419.357,0.000652815

378.298,0.00074944

345.892,0.000845777

118.271,0.00380631

*Material,Name=C35

*Concretecompressionhardening

16380.,0

23400.,0.000789431

15814.6,0.00256253

10267.4,0.00427092

7408.77,0.00589395

5749.74,0.00747891

4682.74,0.00904507

3943.69,0.0106008

3403.29,0.0121503

2991.69,0.0136956

*Concretetensionstiffening

2222.,0

2200.,0.0000301427

1253.05,0.000160189

834.315,0.000273466

638.442,0.000379668

524.938,0.000483255

450.278,0.000585609

397.041,0.000687284

356.924,0.000788541

325.457,0.000889524

109.188,0.00399589

*Material,Name=C40

*Concretecompressionhardening

18760.,0

26800.,0.000764814

16909.7,0.00265856

10469.9,0.00444614

7378.84,0.00613068

5650.07,0.0077733

4562.41,0.0093962

3819.83,0.0110085

3282.34,0.0126144

2876.02,0.0142164

*Concretetensionstiffening

2413.9,0

2390.,0.0000309422

1263.67,0.000170079

815.537,0.000288349

615.229,0.000398993

501.733,0.000506966

428.08,0.000613712

376.039,0.000719794

337.082,0.000825474

306.681,0.00093089

101.338,0.00417611

*Material,Name=C45

*Concretecompressionhardening

20720.,0

29600.,0.00075015

17743.1,0.00273782

10639.8,0.00458359

7386.84,0.00631443

5609.46,0.00800122

4506.18,0.00966788

3759.48,0.0113239

3222.27,0.0129737

2817.97,0.0146195

*Concretetensionstiffening

2535.1,0

2510.,0.0000323044

1265.87,0.000176673

802.219,0.000297743

600.343,0.000410999

487.385,0.0005216

414.624,0.000631002

363.47,0.000739759

325.314,0.000848128

295.619,0.000956244

96.8983,0.0042863

*Material,Name=C50

*Concretecompressionhardening

22680.,0

32400.,0.000739885

18515.2,0.00282136

10800.8,0.00472398

7406.35,0.00650139

5586.72,0.00823314

4469.4,0.00994455

3718.4,0.0116453

3180.69,0.0133399

2777.43,0.0150306

*Concretetensionstiffening

2666.4,0

2640.,0.0000336591

1264.64,0.000183705

786.735,0.000307738

584.088,0.000423793

472.094,0.00053722

400.477,0.000649477

350.37,0.00076111

313.124,0.00087237

284.214,0.000983389

92.4472,0.00440455

*Material,Name=C55

*Concretecompressionhardening

24850.,0

35500.,0.00072745

19297.,0.00291132

10959.8,0.00487362

7429.12,0.00670053

5569.63,0.00848036

4439.05,0.0102397

3683.89,0.0119884

3145.52,0.013731

2743.03,0.0154698

*Concretetensionstiffening

2767.4,0

2740.,0.0000352217

1261.67,0.00018927

774.457,0.000315399

571.752,0.000433514

460.697,0.000549047

390.039,0.000663442

340.767,0.000777235

304.231,0.000890669

275.923,0.00100387

89.2809,0.00449368

*Material,Name=C60

*Concretecompressionhardening

26950.,0

38500.,0.000700606

19978.3,0.00298515

11087.9,0.00500215

7444.03,0.00687342

5552.82,0.008696

4412.21,0.0104977

3654.2,0.0122888

3115.66,0.0140739

2714.07,0.0158551

*Concretetensionstiffening

2878.5,0

2850.,0.0000356383

1256.67,0.000194702

760.756,0.000323283

558.434,0.000443708

448.564,0.000561565

379.016,0.000678302

330.681,0.000794449

294.926,0.000910248

267.272,0.00102582

86.0337,0.00458981

*Material,Name=C65

*Concretecompress