直埋熱力管道應(yīng)力計(jì)算

1、管管道道特特性性值值管管道道外外徑徑D(m)D(m)0.325請(qǐng)請(qǐng)輸輸入入數(shù)數(shù)據(jù)據(jù)管管道道壁壁厚厚d(m)d(m)0.014線線性性系系數(shù)數(shù)(m/(mK)(m/(mK)0.0000122彈彈性性模模量量E(Pa)E(Pa)1.98E+11摩摩擦擦系系數(shù)數(shù)0.4工工作作溫溫度度t t1 1()()95安安裝裝溫溫度度t t2 2()()0泊泊松松系系數(shù)數(shù)0.3增增強(qiáng)強(qiáng)系系數(shù)數(shù)n n1.3截截面面積積A(mA(m2 2) )0.01367156二二次次矩矩I(mI(m4 4) )0.000546674管管道道重重量量g g管管（N/m)N/m)706.3介介質(zhì)質(zhì)重重量量g g介介（N/m)N/m)

2、681保保溫溫厚厚度度d d0 0(m)(m)0.05土土壤壤密密度度(N/m(N/m3 3) )17000設(shè)設(shè)計(jì)計(jì)壓壓力力P Pa a(MPa)(MPa)1.6屈屈服服點(diǎn)點(diǎn)s s(MPa)(MPa)235許許用用應(yīng)應(yīng)力力(MPa)(MPa)130土土壤壤橫橫向向壓壓縮縮反反力力系系數(shù)數(shù)C(N/mC(N/m3 3) )3500000管管道道穩(wěn)穩(wěn)定定性性計(jì)計(jì)算算臨臨界界最最小小覆覆土土深深度度(kg/m(kg/m3 3) )D D0 0(m)(m)g g管管（N/m)N/m)g g介介（N/m)N/m)D(m)D(m)d(m)d(m)0.4170000.425706.36810.3250.014

3、H Hkpkp(m)(m)g(kN)g(kN)1.3911.43臨臨界界最最小小覆覆土土深深度度(m)(m)1 1. .3 39 9管管道道上上部部重重力力之之和和(kN)(kN)1 11 1. .4 43 3土土壤壤摩摩擦擦力力計(jì)計(jì)算算摩摩擦擦長(zhǎng)長(zhǎng)度度t t1 1()()t t2 2()()E(Pa)E(Pa)(m/(mK)(m/(mK)D(m)D(m)d(m)d(m)9501.98E+110.00001220.3250.0140.4L Lf f(m)(m)f(N)f(N)F(kN)F(kN)29.71105.613137.38摩摩擦擦長(zhǎng)長(zhǎng)度度(m)(m)2 29 9. .7 71 1軸軸向

4、向推推力力(kN)(kN)3 31 13 37 7. .3 38 8單單位位長(zhǎng)長(zhǎng)摩摩擦擦力力(kN/m)(kN/m)1 10 05 5. .6 61 1管管道道熱熱屈屈服服溫溫差差計(jì)計(jì)算算熱熱屈屈服服溫溫差差t t1 1()()t t2 2()()E(Pa)E(Pa)(m/(mK)(m/(mK)n ns s(MPa)(MPa)9501.98E+110.00001221.32350.3t t(MPa)(MPa)dTdTg g()()dT()dT()18.57121.0995.00實(shí)實(shí)際際溫溫差差()()9 95 5. .0 00 0屈屈服服溫溫差差()()1 12 21 1. .0 09 9環(huán)環(huán)

5、向向應(yīng)應(yīng)力力(MPa)(MPa)1 18 8. .5 57 7管管道道過過渡渡段段長(zhǎng)長(zhǎng)度度計(jì)計(jì)算算管管道道過過渡渡段段長(zhǎng)長(zhǎng)度度計(jì)計(jì)算算t t1 1()()t t2 2()()E(Pa)E(Pa)(m/(mK)(m/(mK)n ns s(MPa)(MPa)9501.98E+110.00001221.32350.3L(m)L(m)dT()dT()A(mA(m2 2) )28.9995.000.0137過過渡渡段段長(zhǎng)長(zhǎng)度度(m)(m)2 28 8. .9 99 9單單位位長(zhǎng)長(zhǎng)摩摩擦擦力力(kN/m)(kN/m)1 10 05 5. .6 61 1橫橫截截面面積積(m(m2 2) )0 0. .0 0

6、1 13 37 7管管道道過過渡渡段段伸伸長(zhǎng)長(zhǎng)量量計(jì)計(jì)算算管管道道過過渡渡段段伸伸長(zhǎng)長(zhǎng)量量計(jì)計(jì)算算t t1 1()()t t2 2()()E(Pa)E(Pa)(m/(mK)(m/(mK)f(kN/m)f(kN/m)L(m)L(m)dTdTg g()()9501.98E+110.0000122105.6128.99121.09dL1(mm)dL1(mm)dL2(mm)dL2(mm)15.2315.23熱熱伸伸長(zhǎng)長(zhǎng)量量(mm)(mm)1 15 5. .2 23 3塑塑性性狀狀態(tài)態(tài)下下熱熱伸伸長(zhǎng)長(zhǎng)量量(mm)(mm)1 15 5. .2 23 3LZLZ型型管管道道轉(zhuǎn)轉(zhuǎn)角角臂臂長(zhǎng)長(zhǎng)計(jì)計(jì)算算臂臂長(zhǎng)長(zhǎng)計(jì)

7、計(jì)算算t t1 1()()t t2 2()()C(N/mC(N/m3 3) )D(m)D(m)E(Pa)E(Pa)I(mI(m4 4) )95035000000.4251.98E+110.000547L1(m)L1(m)L2(m)L2(m)9.509.50臂臂長(zhǎng)長(zhǎng)度度(m)(m)9 9. .5 50 0管管道道錨錨固固段段內(nèi)內(nèi)軸軸向向力力計(jì)計(jì)算算管管道道錨錨固固段段軸軸向向力力計(jì)計(jì)算算t t1 1()()t t2 2()()E(Pa)E(Pa)(m/(mK)(m/(mK)dTdTg g()()t t(MPa)(MPa)9501.98E+110.00001220.3121.0918.57N Na

8、 a(kN)(kN)dT()dT()A(mA(m2 2) )3061.2195.000.0137錨錨固固段段軸軸向向力力(kN)(kN)3 30 06 61 1. .2 21 1管管道道錨錨固固段段內(nèi)內(nèi)軸軸向向力力計(jì)計(jì)算算管管道道錨錨固固段段軸軸向向力力計(jì)計(jì)算算t t1 1()()t t2 2()()E(Pa)E(Pa)(m/(mK)(m/(mK)t t(MPa)(MPa)9501.98E+110.00001220.318.57p p(MPa)(MPa)dT()dT()A(mA(m2 2) )-216.4895.000.0137當(dāng)當(dāng)量量應(yīng)應(yīng)力力變變化化范范圍圍(kN)(kN)- -2 21 1

9、6 6. .4 48 8不不需需要要校校驗(yàn)驗(yàn)過過渡渡段段長(zhǎng)長(zhǎng)度度，直直管管段段中中可可以以有有錨錨固固段段存存在在過過渡渡段段校校核核長(zhǎng)長(zhǎng)度度(m)(m)3 30 0. .0 05 5管管道道過過渡渡段段長(zhǎng)長(zhǎng)度度計(jì)計(jì)算算(m/(mK)(m/(mK)E(Pa)E(Pa)t t1 1()()t t2 2()()0.00001221.98E+11950(kg/m(kg/m3 3) )17000P Pa a(MPa)(MPa)D(m)D(m)d(m)d(m)1.60.3250.014P Pa a(MPa)(MPa)D(m)D(m)d(m)d(m)(kg/m(kg/m3 3) )dTdTg g()()1

10、.60.3250.0140.417000121.09過渡段：如圖中的AB段，當(dāng)介質(zhì)溫度發(fā)生變化時(shí)，設(shè)置補(bǔ)償器A點(diǎn)處的管道處于自由伸縮狀狀態(tài)，管道截面位置由A點(diǎn)逐漸移向B點(diǎn)，由于管道與周圍土壤摩擦力f作用，使得得管道熱伸長(zhǎng)受阻，當(dāng)B點(diǎn)處的摩擦力增加加到與溫度脹力相等時(shí)，管道就能不再向向有補(bǔ)償器的A點(diǎn)處伸長(zhǎng)，而進(jìn)入了自然錨錨固狀態(tài)。在這類管段中，管道的熱伸長(zhǎng)長(zhǎng)由A點(diǎn)自由伸縮逐漸過渡B點(diǎn)的錨固狀態(tài)態(tài)，管道的軸向溫度應(yīng)力亦從A點(diǎn)處為零逐逐漸增加到B點(diǎn)處最大值，各處管道都有不不同程度的熱伸長(zhǎng)。這種管段的設(shè)計(jì)計(jì)算算的主要任務(wù)是計(jì)算管段的熱伸長(zhǎng)量，以以便合理確定補(bǔ)償器的補(bǔ)償量。臨臨界界最最小小覆覆土土深深度

11、度摩摩擦擦長(zhǎng)長(zhǎng)度度熱熱屈屈服服溫溫差差管管道道過過渡渡段段長(zhǎng)長(zhǎng)度度計(jì)計(jì)算算L Ly y(m)(m)0管管道道過過渡渡段段伸伸長(zhǎng)長(zhǎng)量量計(jì)計(jì)算算不不需需要要校校驗(yàn)驗(yàn)過過渡渡段段長(zhǎng)長(zhǎng)度度，直直管管段段中中可可以以有有錨錨固固段段存存在在最最大大允允許許摩摩擦擦長(zhǎng)長(zhǎng)度度計(jì)計(jì)算算結(jié)結(jié)果果實(shí)實(shí)例例DNDN D(mm)D(mm)d(mm)d(mm)F(kN)F(kN)L Lf f(m)(m)f(kN/m)f(kN/m)25.0033.702.6036.4428.301.2932.0042.402.6046.6329.181.6040.0048.302.6053.5533.511.6050.0060.003.5089.1242.842.0870.0076.004.00129.7962.402.0880.0089.004.00153.2263.502.41100.00114.004.00198.2963.863.11125.00140.004.50274.7977.303.56150.00159.004.50313.3277.944.02200.00219.006.00575.93108.835.29250.00273.006.00