完整版钢板桩计算书文档良心出品

1、关的一期排水沟槽钢板桩计算书一、计算依据1.地质：根据现场砂性土查得,砂土干溶重 1.5t/m3 ,饱和溶重 1.4t/m3q = H ( ' - 1)Htg 245° = 'Ht/m232. 粘土 r = 2.74t/m *=3.633. 钢板桩：德国拉森W型,截面模量 缶=2037cm ,弯曲允许应 力 L C-W 1=170MP4. 支撑材质：Q 235钢,轴向允许应力M】=160MP弯曲允许应力,Lw】=170MP,允许剪应力M】=95MP二、第一种支撑结构 情况一设一道水平支撑,支撑间距4m.支撑安设好,基坑开挖到沟槽设计标高约5.2米.1、钢板桩应力计算(

2、1.)支撑应力3计=1.4t/mI|t i2；浮=1.4t / m"二 0o不计水平压力.作用于钢板桩的主动土压力:q 主=1.4*9=12.6t/m2作用于钢板桩的被动土压力:q 主=1.4*3.8=5.32t/m2E 主=1/2*12.6*9=56.7tE 主=1/2*5.32*3.8=10.1t1£主=16.8 12.0 = 100.8t21E皮10.5 7.5 = 39.4t' X = 0RA=56.7-10.1=46.6t/mZ Me =0Ra=1/10.1 (56.7*1/3*9-10.1*1/3*3.8 ) =15.6t(2.)钢板桩应力彳段设钢板桩皎

3、接于基坑底面以下3.0m处L=6.0mx = 0.5774 6.0 = 3.46mM= 1 2.10 6.02 +0.128 1 (10.30 2.10) 6.021 c1-3.2尺3.0f 4.2k3.02 x 3.0 x 3.46 - 厂 3.46-3.0)3乂6.03乂3.02= (9.45 19.35) -(3.63 - 0.11) = 25.28t m25.28 102c =2037 一 .2=1.24t/ cm2、围橡应力计算(1).围橡应力.23跨按简支梁计算.M2 3=1 6 1 . 4 3 =06 t9 . m82 3 8-1_ .23Q23 =61.4 3.092.1 t2

4、N23-1 = 61.4 2.783.182围橡断面:2 I 56C.= 16.5 mmF =2 1 5 7.8533 1c52!-_ 4 _2 或 1 4 0 01 4c2T8 0 0Wx =2 5 5 05 1c0r2®3S 2 1 5 2 93 0 538mix = 21.3 cm ,iy =3.16 cm.I =300 cm ,300 “-14 ,21.3=0.900300=95 ,3.16y =0.569应力:cj =23_269.08 1020.569 315.675100= 1.818 t/cm 2 k J -1.7 t/cm283.18=0.463 1.3551428

5、00 1.65 292.1 305822 =0.598 t/cm - 0.95 t / cm把两块I字钢的翼缘焊接在一块(间断焊缝),*83.1369.°8 102 = 0.293 1.355应力：0.900 315.675100=1.648 t/cm 2 ： J -1.7 t/cm 223=69.08 m=9 2 .t1Nn - n 11= 61.4 2 .一0=61.4 t2应力:6 1.40.900=1.571 t/cm一 一 一2一6 9.028 10, =0.216 1.=3 5 55.6 75 1 00lc I -1 . 7/cm 2砧1 =0.6 0t/cm(3)直杆应

6、力直杆断面：螺旋焊钢管 .610X 8 mm.2A = 151.22 cmi = 21.19cm. e =° =3321.29300'5514.155 =0.98421.29% -=0.9251Nn-=61.U(2.7 +3.0)写=174.99 tN44 = 61.4 (3.5 1.5) =307.00 t应力:an - n174.99 =1.251 t/cm0.925 151.22< b = 1.6t/cm 2二44一307.00一 =2.063 t/cm0.984 151.22> fcr = 1.6t/cm 2直杆断面：螺旋焊钢管 力300X 10 mm.

7、A=204.1 cmi = 22.98cm.30022.98=13=0.987应力:307.00220.987 204.1=1.524t/cm： L.- I - 1.6t/cm结果：.围橡2 I 56c 两片焊为整体.改为31 56b.支撑：螺旋焊钢管.300 x 10mm.(4)斜杆 -21 336N =61.4 (2.0 3.0)-191.02 t2 2.7-3近=15=0.98322.98应力:.昼 =I9、02=0.952 t/cm 2 < L = 16t/cm 20.983 204.1(1)、支撑反力,2q主=1.4 12 =16.8 t/ml 1£主=16.8 12

8、.0 =100.8 t/m 2l 1 一 一,E被=成 7.0 5.0 =17.5 t/m-1 C C C5,Ra 3.85 2.75 = 5.29 t/m 2' X = 0Rb =100.8 -5.29 -17.5 = 78.01 tMd =0(2)、钢板桩应力.假设钢板桩皎接于基坑底面以下2.0m处:L=5.0 mx= 0.5774 5.0 =2.89 m1212M =耳 5.60 5.02 0.128 分12.60 5.6 5.02 -1J 2.8 k 2.023x5.0"0x2.89 =(17.5 + 11.2)-5.39=23.31 t mc.2331 102 =1

9、.144 t/cm2037(3.)围橡应力围橡断面:3 I 56c d=3 16.5 mm 24F =3 15 =7.835 =473.505 cm I 3 71400 =214200 cm 3Wx =3 2550 =7650 cmSx =3 1529 =4587 cm3ix =21.3 cm iy =3.16 cm I =300 cmx - 0.900? =0.569M23 =1 28.01 3.02 =87.76 tm238-1 .Q23 =78.01 3.0 = 117.15 t21 .N23 = 78.01 2.7 = 105.31 t .232应力:23105.3187.76 102

10、+0.569 473.5057650= 0.391 1.147232= 1.538 t/cm117.15 4587214200 3 1.65=0.507 t/cm(4)、直杆应力.N44 =78.01 (3.5 1.5)=390.05 t-44390.050.987 204.1= 1.936 t/cm断面：螺旋焊钢管 813 10 mm A =252.14 cm2300i = 28.39cm.' 441144 = 0.99128.39390.050.991 252.14= 1.561 t/cm2 ： I -1.6 t/cm2第一种支撑结构情况一计算结果：1、钢支撑：德国拉森IV型：w = 2037cm3.长9m2、围橡：3I 56b第五道可灌注水下封底混凝土,或利用 钻孔桩.3、直杆和斜撑：螺旋焊钢管中300*10mm4、采用数据：粉煤灰按全饱和,因无饱和溶重资料, 作用钢板桩的内、外水压力和土压力之和按： q=1. 4H t /m有地面至计算位置的高度m二、围橡和支撑