1、- 1 - / 7路面結(jié)構(gòu)課程設(shè)計譚詩亮2018210076381、背景基于KENLAYER計算機(jī)程序的路面結(jié)構(gòu)設(shè)計2、輸入數(shù)據(jù)KENLAYER程序中菜單欄的目錄項(xiàng)依次輸入下列數(shù)據(jù)。Gen eralMATL=1，NDAMA=0，NPY=1，NLG=1，DEL=0.001，NL=3，NZ=3，ICL=80，NSTD=9,NBOND=1，NLBT=1，NLTC=1，NUNIT=1Zcoord ZC1=1,ZC2=9.9,ZC3=15.1Layer TH1=10，TH2=15，PR1=0.35, PR2=0.35,PR3=0.45Moduli E仁700000，E2=300000, E3=20000

2、,Load LOAD=1,CR=10,CP=700,YW=30,XW=0,NP OR NPT=2XPT仁0, YPT1=-10, XPY2=0, YTP2=15基于上述基數(shù)，變換bascB度，同時設(shè)兩個時期，E:60C,E:-10C輸出結(jié)果如下：以h15.1為例，表示h=15時，60C下的結(jié)果輸出，如下:INPUT FILE NAME -C:KENPAVEh15-1.DATNUMBER OF PROBLEMS TO BE SOLVED = 1TITLE -h152MATL = 1 FOR LINEAR ELASTIC LAYERED SYSTEMNDAMA = 0, SO DAMAGE ANA

3、LYSIS WILL NOT BE PERFORMEDNUMBER OF PERIODS PER YEAR (NPY = 1NUMBER OF LOAD GROUPS (NLG = 1TOLERANCE FOR INTEGRATION (DEL - = .001NUMBER OF LAYERS (NL- = 3NUMBER OF Z COORDINATES (NZ=3LIMIT OF INTEGRATION CYCLES (ICL- = 80COMPUTING CODE (NSTD-= 9- 2 - / 7SYSTEM OF UNITS (NUNIT- = 1Len gth and displ

4、aceme nt in cm, stress and modulus in kPaunit weight in kN/mA3, and temperature in CTHICKNESSES OF LAYERS (TH ARE : 10 15POISSONS RATIOS OF LAYERS (PR ARE : .35 .35 .45VERTICAL COORDINATES OF POINTS (ZC ARE: 1 9.9 25.1ALL INTERFACES ARE FULLY BONDEDFOR PERIOD NO. 1 LAYER NO. AND MODULUS ARE :1 7.000

5、E+05 2 3.000E+053 2.000E+04LOAD GROUP NO. 1 HAS 2 CONTACT AREASCONTACT RADIUS (CR- = 10CONTACT PRESSURE (CP- = 700NO. OF POINTS AT WHICH RESULTS ARE DESIRED (NPT- = 2WHEEL SPACING ALONG X-AXIS (XW- = 0WHEEL SPACING ALONG Y-AXIS (YW- = 30RESPONSE PT. NO. AND (XPT, YPT ARE: 1 0.000 -10.000 2 0.000 15.

6、000PERIOD NO. 1 LOAD GROUP NO. 1POINT VERTICAL VERTICAL VERTICAL MAJOR MINOR INTERMEDIATEDISPL.PRINCIPAL PRINCIPAL PRINCIPALNO. COORDINATE (HORIZONTAL STRESS STRESS STRESS STRESSP. STRAIN (STRAIN (STRAIN (STRAIN (STRAIN11.000000.16026337.592701.439169.481 662.674(STRAIN 2.618E-04 -1.157E-04 5.860E-0

7、4 -4.399E-04 5.112E-0419.900000.15909176.331274.446-144.993 -111.160(STRAIN -2.888E-04 3.309E-04 5.201E-04 -2.888E-04 -2.235E-04125.100000.1505638.84042.5937.3768.964(STRAIN -7.912E-04 1.490E-03 1.762E-03 -7.912E-04 -6.761E-0421.000000.175621.334608.6221.333410.986(STRAIN 2.821E-04 -5.079E-04 6.633E

8、-04 -5.079E-04 2.821E-0429.900000.17711137.955137.955-146.987132.767(STRAIN -3.453E-04 2.042E-04 2.042E-04 -3.453E-04 1.942E-04225.100000.1673648.68948.6898.05813.392(STRAIN -9.939E-04 1.952E-03 1.952E-03 -9.939E-04 -6.072E-04POINT VERTICAL NORMAL X NORMAL Y SHEAR XY SHEAR YZ SHEAR XZSTRESS STRESS S

9、TRESS STRESS STRESSNO. COORDINATE (STRAIN (STRAIN (STRAIN (STRAIN (STRAIN11.00000 6.627E+02 5.333E+02 0.000E+00 -2.473E+02 0.000E+00(STRAIN 5.112E-04 2.618E-04 0.000E+00 -9.539E-04 0.000E+00- 3 - / 719.90000 -1.450E+02 -1.304E+01 0.000E+00-1.679E+020.000E+00(STRAIN -2.888E-04 -3.430E-050.000E+00 -6.

10、478E-04 0.000E+00125.10000 7.376E+00 1.272E+01 0.000E+00-1.059E+010.000E+00(STRAIN -7.912E-04 -4.040E-040.000E+00 -1.535E-03 0.000E+0021.00000 6.086E+02 4.110E+020.000E+000.000E+000.000E+00(STRAIN6.633E-042.821E-04 0.000E+000.000E+000.000E+0029.90000 -1.470E+02 1.328E+02 0.000E+000.000E+000.000E+00(

11、STRAIN -3.453E-041.942E-04 0.000E+000.000E+000.000E+00225.10000 8.058E+00 1.339E+01 0.000E+000.000E+00 0.000E+00(STRAIN -9.939E-04 -6.072E-040.000E+000.000E+000.000E+00從上述輸出結(jié)果可以看出，在E=700MPa的情況下，A點(diǎn)壓應(yīng)變（VERTICALSTRAIN=1.952E-03 B點(diǎn)拉應(yīng)力（NORMAL X STRESS=-1.470E+02C點(diǎn)剪應(yīng)力（SHEAR YZ STRESS=-2.473E+02 = 1NUMBER

12、OF LOAD GROUPS (NLG = 1TOLERANCE FOR INTEGRATION (DEL - = .001NUMBER OF LAYERS (NL- = 3NUMBER OF Z COORDINATES (NZ=3LIMIT OF INTEGRATION CYCLES (ICL- = 80COMPUTING CODE (NSTD-= 9SYSTEM OF UNITS (NUNIT- = 1Len gth and displaceme nt in cm, stress and modulus in kPaunit weight in kN/mA3, and temperatur

13、e in CTHICKNESSES OF LAYERS (TH ARE : 10 15POISSONS RATIOS OF LAYERS (PR ARE : .35 .35 .45VERTICAL COORDINATES OF POINTS (ZC ARE: 1 9.9 25.1ALL INTERFACES ARE FULLY BONDEDFOR PERIOD NO. 1 LAYER NO. AND MODULUS ARE :1 1.000E+07 2 3.000E+053 2.000E+04LOAD GROUP NO. 1 HAS 2 CONTACT AREASCONTACT RADIUS

14、(CR- = 10CONTACT PRESSURE (CP-= 700- 4 - / 7NO. OF POINTS AT WHICH RESULTS ARE DESIRED (NPT- = 2WHEEL SPACING ALONG X-AXIS (XW- = 0WHEEL SPACING ALONG Y-AXIS (YW- = 30RESPONSE PT. NO. AND (XPT, YPT ARE: 1 0.000 -10.000 2 0.000 15.000PERIOD NO. 1 LOAD GROUP NO. 1POINT VERTICAL VERTICAL VERTICAL MAJOR

15、 MINOR INTERMEDIATEDISPL.PRINCIPAL PRINCIPAL PRINCIPALNO. COORDINATE (HORIZONTAL STRESS STRESS STRESS STRESSP. STRAIN (STRAIN (STRAIN (STRAIN (STRAIN1.000000.11582333.6762049.151(STRAIN 7.592E-05 -9.412E-05 1.375E-04 -1.049E-04 8.673E-0519.90000 0.1156661.81664.931 -2131.948 -1496.364(STRAIN -1.631E

16、-04 1.331E-04 1.335E-04 -1.631E-04 -7.729E-05125.10000 0.1111820.78021.9654.7965.408(STRAIN -3.761E-04 7.828E-04 8.686E-04 -3.761E-04 -3.317E-0421.00000 0.12383-0.773 2324.611-0.773 1785.773(STRAIN 9.724E-05 -1.439E-04 1.700E-04 -1.439E-04 9.724E-0529.90000 0.1237870.72070.720 -2563.319 -1706.254(ST

17、RAIN -1.991E-04 1.565E-04 1.565E-04 -1.991E-04 -8.338E-05225.10000 0.1182524.45024.4505.0256.256(STRAIN -4.396E-04 9.687E-04 9.687E-04 -4.396E-04 -3.504E-04POINT VERTICAL NORMAL X NORMAL Y SHEAR XY SHEAR YZ SHEAR XZSTRESS STRESS STRESS STRESS STRESSNO. COORDINATE (STRAIN (STRAIN (STRAIN (STRAIN (STR

18、AIN11.000002.049E+03 1.593E+030.000E+00 -3.274E+020.000E+00(STRAIN1.375E-04 7.592E-050.000E+00 -8.839E-050.000E+0019.90000 -2.132E+03 -1.493E+03 0.000E+00 -6.967E+010.000E+00(STRAIN -1.631E-04 -7.687E-05 0.000E+00 -1.881E-050.000E+00125.10000 4.796E+00 6.593E+000.000E+00-4.267E+000.000E+00(STRAIN -3

19、.761E-04 -2.458E-04 0.000E+00 -6.187E-040.000E+0021.00000 2.325E+03 1.786E+030.000E+000.000E+00 0.000E+00(STRAIN1.700E-04 9.724E-050.000E+00 0.000E+000.000E+0029.90000 -2.563E+03 -1.706E+03 0.000E+00 0.000E+000.000E+00(STRAIN -1.991E-04 -8.338E-05 0.000E+000.000E+00 0.000E+00225.10000 5.025E+00 6.25

20、6E+000.000E+00 0.000E+000.000E+00(STRAIN -4.396E-04 -3.504E-04 0.000E+000.000E+00 0.000E+00從上述輸出結(jié)果可以看出，在E=700MPa的情況下，A點(diǎn)壓應(yīng)變（VERTICAL253.6641673.24- 5 - / 7STRAIN=9.687E-04 B點(diǎn)拉應(yīng)力（NORMAL X STRESS=-2.563E+03C點(diǎn)剪應(yīng)力（SHEARYZ STRESS=-3.274E+02B 點(diǎn)拉應(yīng)力（NORMAL XSTRESSC 點(diǎn)剪應(yīng)力（SHEAR YZSTRESSE=700MPaE=10000MPaE=700M

21、PaE=10000MPaE=700MPaE=10000MPah=151.952E-039.687E-04-1.470E+02-2.563E+03-2.473E+02-3.274E+02h=201.564E-038.604E-04-8.183E+01-2.260E+03-2.431E+02-3.213E+02h=251.274E-037.539E-04-5.312E+01-2.037E+03-2.406E+02-3.168E+02h=301.052E-036.585E-04-4.103E+01-1.874E+03-2.390E+02-3.136E+02h=358.809E-045.762E-04

22、-3.690E+01-1.755E+03-2.379E+02-3.113E+02h=407.463E-045.061E-04-3.664E+01-1.667E+03-2.372E+02-3.096E+02h=456.391E-044.466E-04-3.826E+01-1.602E+03-2.367E+02-3.083E+02考察上述數(shù)據(jù)，找出在兩種不同模量情況下滿足TcO.5mpa，（T b1.5mpa， 9.7mic的厚度。從上表可以看出，從h=35起，A點(diǎn)壓應(yīng)變滿足要求，C點(diǎn)剪應(yīng)力也滿足要求，B點(diǎn)拉應(yīng)力在E=700MPa寸也滿足要求，僅僅B點(diǎn)拉應(yīng)力 在E=10000MPa時不滿足要求，且

23、基層厚度達(dá)到最大h=45時B點(diǎn)拉應(yīng)力在E=10000MP時也不滿足要求。因此需要改變面層厚度。B、瀝青面層和半剛性基層底面拉應(yīng)力驗(yàn)算指標(biāo)是用于避免結(jié)構(gòu)層的不合理組 合或材料的不合理- 6 - / 7選用，引起相對薄弱環(huán)節(jié)處出現(xiàn)某種類型的破壞，所以設(shè)置 了相應(yīng)的單項(xiàng)控制指標(biāo)。但是在層間接觸為連續(xù)的情況下，瀝青面層底面的應(yīng) 力雖處于受壓狀態(tài)，在層間接觸為滑動的情況下，瀝青面層底面的應(yīng)力雖處于 受拉狀態(tài)，但瀝青面層的疲勞壽命仍大于半剛性基層，因而，瀝青面層底面拉 應(yīng)力驗(yàn)算指標(biāo)在設(shè)計中不會起控制作用。我國瀝青路面設(shè)計體系采用的是力學(xué) 經(jīng)驗(yàn)法，其路面模型借鑒于SHEL的理論設(shè)計法，把路面作為一種多層彈性

24、體系 。設(shè)計彎沉是表征路面整體剛度大小的指標(biāo)，是路面厚度設(shè)計的主要依據(jù)，層 底拉應(yīng)力作為驗(yàn)算指標(biāo)。更改設(shè)計參數(shù)，重新輸入設(shè)計數(shù)據(jù)，即可輸出數(shù)據(jù)。下面列出在基層厚度h=35,面層厚度h0=12;基層厚度h=35,面層厚度h0=13;基層厚度h=40,面層厚度h0=12三種情況下A、B、C點(diǎn)的應(yīng)力應(yīng)變情 況。分析討論是否滿足要求?；鶎雍穸萮) 面層厚度C 點(diǎn)剪應(yīng)力(SHEAR YZSTRESSE=700MPaE=10000MPaE=700MPaE=10000MPaE=700MPaE=10000MPah=35(h0=128.110E-044.879E-04-7.563E+01-1.585E+03-2.330E+02-2.835E+02h=35(h0=137.787E-044.500E-04-8.895E+01-1.500E