PSI 分析输出的list文件中桩土结果如何查看

Qiang He — Fri, 10 May 2019 05:19:33 GMT

Current Revision posted to 技术资料库 by Qiang He on 5/10/2019 5:19:33 AM

SACS自动生成PILE HEAD STIFFNESS TABLE

SACS自动生成的pile head stiffness table,共包含轴向，横向，转动，扭转，四个自由度方向的生成初始刚度计算所用的表格。

AXIAL COMPRESSION CAPACITY.......... -64043.35 KN

AXIAL TENSION CAPACITY.............. 50787.80 KN

******************************* TABR CARD IMAGES *******************************

TABR AXIAL DF -4.495-1.828.83920 PL1 SOL1

TABR DEFLECTN 0. 5.080 12.70 PL1 SOL1

TABR ROTATION -.01500. .0150 PL1 SOL1

TABR TORSION 0. 11.298 PL1 SOL1

Final forces/deflections在pile head 和structural 坐标中值不同：

Final forces/deflections结果在PILE HEAD COORDINATES 和STRUCTURAL COORDINATES中结果不是简单的X,Y,Z坐标的互换（即PILE HEAD COORDINATES中Z值结果直接赋给STRUCRURAL COORDINATES中X），因为平动位移最大方向与PILE HEAD COORDIANTES的+Y轴方向一致，各个桩的Y轴方向很可能各不相同，而结构坐标X,Y,Z却是固定的，两坐标系间结果的转换需要考虑矢量分解。在手册中对此有详细说明如下：

涉及到坐标的为第二条假设

产生平面外位移结果的原因如下：

FINAL DEFLECTIONS FOR LOAD CASE EW18

PILE HEAD COORDINATES

PILE BATTER

JOINT JOINT DEFL(X) DEFL(Y) DEFL(Z) ROT(X) ROT(Y) ROT(Z)

CM CM CM RAD RAD RAD

P11 P1B -0.2590322 9.7326087 -0.2288547 -0.0057143 0.0005213 0.0036151

P12 P1J -1.6366748 -9.9895884 -0.4766360 -0.0056787 0.0015215 -0.0031813

……

FINAL DEFLECTIONS FOR LOAD CASE EW18

STRUCTURAL COORDINATES

PILE BATTER

JOINT JOINT DEFL(X) DEFL(Y) DEFL(Z) ROT(X) ROT(Y) ROT(Z)

CM CM CM RAD RAD RAD

P11 P1B 7.9128352 -5.6712508 -0.2590322 0.0024670 0.0026934 -0.0057143

P12 P1J 4.9713053 -8.6778558 -1.6366748 0.0021402 0.0028028 -0.0056787

……

关于INTERNAL FORCES与PILE HEAD FORCES的对比结果：

通过INTERNAL FORCES和PILE HEAD FORCES的对比，可以得知上部结构荷载与桩的反作用力是否平衡（由于是通过迭代计算来考虑的，所以通过一定的DIFFERENCE(%)来判断）

FINAL PILE HEAD FORCES (KN AND KN-M ) FOR LOAD CASE EW18

PILE HEAD COORDINATES

PILE BATTER

JOINT JOINT FORCE(X) FORCE(Y) FORCE(Z) MOMENT(X) MOMENT(Y) MOMENT(Z)

P11 P1B -1579.803 3611.675 267.827 -114.285 4392.119 -28219.341

……

INTERNAL FORCES ON STRUCTURE (KN AND KN-M ) FOR LOAD CASE EW18

PILE HEAD COORDINATES

PILE BATTER

JOINT JOINT FORCE(X) FORCE(Y) FORCE(Z) MOMENT(X) MOMENT(Y) MOMENT(Z)

P11 P1B 1579.764 -3611.704 -267.850 114.286 -4392.304 28219.658

……

INTERNAL FORCES ON STRUCTURE (KN AND KN-M ) FOR LOAD CASE EW18

STRUCTURAL COORDINATES

PILE BATTER

JOINT JOINT FORCE(X) FORCE(Y) FORCE(Z) MOMENT(X) MOMENT(Y) MOMENT(Z)

P11 P1B -3135.110 1813.074 1579.764 12266.267 25791.087 114.286

……

FORCE COMPARISONS IN PILE COORDINATES FOR LOAD CASE EW18

(KN AND KN-M )

PILE STRUCTURE FORCE RELATIVE

JOINT ID DOF FORCES FORCES DIFFERENCE DIFFERENCE(%)

P11 P1B MX -114.285 114.286 0.001 0.001

MY 4392.119 -4392.303 -0.185 0.004

MZ -28219.339 28219.657 0.318 0.001

FX -1579.803 1579.764 -0.040 0.003

FY 3611.674 -3611.704 -0.030 0.001

FZ 267.827 -267.850 -0.023 0.009

PILE 应力UC结果介绍：

‘PILE MAXIMUM UNITY CHECK SUMMARY’的目的是提取每根桩各自的最大应力UC值。

‘PILE GROUP SUMMARY’的目的是对每个深度的桩单元从所有的桩的应力结果中提取最大应力UC值。

* * * P I L E M A X I M U M U N I T Y C H E C K S U M M A R Y * * *

PILE GRUP LOAD ******* PILEHEAD FORCES ******* * PILEHEAD DISPLACEMENTS * *********** STRESSES AT MAX. UNITY CHECK ************

CASE AXIAL LATERAL MOMENT AXIAL LATERAL ROTATION DEPTH AXIAL FBY FBZ SHEAR COMB. UNITY

KN KN KN-M CM CM RAD M ---------------- N/MM2 ------------- CHECK

P11 PL1 EW18 -1579.80 3621.62 28559.4 0.26 9.74 0.003652 0.0 -3.03 -94.16 -14.66 13.93 -98.33 0.286

P12 PL1 EW18 -18794.98 4053.83 37252.4 1.64 10.00 0.003526 0.0 -36.09 113.98 -49.59 15.78 -160.39 0.486

P21 PL1 EW18 -33291.49 5208.40 52239.1 3.12 12.88 0.003061 0.0 -63.93 173.53 16.44 20.43 -238.24 0.728

P22 PL1 EW18 -33747.08 5206.58 52242.8 3.18 12.89 0.003041 0.0 -64.80 173.86 -12.59 20.43 -239.12 0.731

P51 PL1 EW18 15812.37 4451.62 37812.6 -1.19 11.36 0.003606 0.0 30.36 125.68 11.09 16.86 156.53 0.471

P52 PL1 EW18 16491.83 4565.01 39294.5 -1.25 11.56 0.003561 0.0 31.67 130.77 -9.47 17.29 162.78 0.490

P61 PL1 EW18 -16320.98 3843.73 34679.7 1.43 9.42 0.003387 0.0 -31.34 -106.21 -45.94 14.94 -147.06 0.444

P62 PL1 EW18 15.50 3651.34 29503.4 0.13 9.51 0.003451 0.0 0.03 96.91 -17.32 14.02 98.47 0.284

* * P I L E G R O U P S U M M A R Y * *

GROUP ID = PL1

DISTANCE ***** DEFLECTIONS ***** ***** INTERNAL LOADS ***** ********** STRESSES ********** PILE CRITICAL MAXIMUM

FROM BENDING AXIAL BENDING AXIAL SHEAR COMB. HEAD LOAD UNITY

PILEHEAD LATERAL AXIAL ROT. MOMENT SHEAR LOAD STRESS STRESS STRESS STRESS ID CASE CHECK

M CM CM RAD KN-M KN KN N/MM2 N/MM2 N/MM2 N/MM2

0.0 12.886 3.181 0.00304 52242.8 5319.6 -33746.8 174.32 -64.80 20.43 -239.12 P22 EW18 0.731

1.0 12.562 3.150 0.00369 47136.7 5330.1 -33766.0 157.28 -64.84 20.47 -222.12 P22 EW18 0.682

1.9 12.180 3.119 0.00427 42010.5 5350.0 -33804.5 140.18 -64.91 20.55 -205.09 P22 EW18 0.633

2.9 11.744 3.088 0.00478 36866.5 5367.8 -33843.0 123.01 -64.99 20.62 -188.00 P22 EW18 0.584

3.8 11.262 3.056 0.00523 31707.0 5383.2 -33881.5 105.80 -65.06 20.67 -170.86 P22 EW18 0.534

‘SOIL MAXIMUM AXIAL CAPACITY SUMMARY’ 结果介绍：

‘CAPACITY (INCL. WT)’：土壤的实际轴向承压能力值减去从桩头到桩底端部分桩的重量值

‘SAFETY FACTOR’:CAPACITY值除以最大荷载值得到安全系数

‘UNITY CHECK’:这个值不是表示结构应力的结果，是根据对应规范对应条款的安全系数来进行计算的。比如API规范极端工况下，许用安全系数为1.5，所以如下示例中‘UNITY CHECK’的计算为：取受压安全系数和受拉安全系数中较小值，这里为45.35，UC=1.5/45.35=0.033，保留两位小数位0.03. 需要注意的是在该报告中，产生最大轴向荷载的工况不一定是进行UC校核的工况，因为极端工况下安全系数为1.5，操作工况下安全系数2.0，这就导致极端条件下许用最大承载力大于操作工况下许用最大承载力。也因为这个原因，在校核这里的UC时，必须以产生这个UC的工况（每行最左端和UC值紧邻的工况）的轴向荷载作为输入，而不能直接以产生最大轴向荷载对应的工况作为校核工况。总之不能简单的以该报告中安全系数和规范规定安全系数进行运算得到UC。

* * * S O I L M A X I M U M A X I A L C A P A C I T Y S U M M A R Y * * *

PILE GRP ********* PILE ********* ************** COMPRESSION ************* **************** TENSION ***************

JT PILEHEAD WEIGHT PEN. CAPACITY MAX. CRITICAL CONDITION CAPACITY MAX. CRITICAL CONDITION *MAXIMUM*

O.D. THK. (INCL. WT) LOAD LOAD LOAD SAFETY (INCL. WT) LOAD LOAD LOAD SAFETY UNITY LOAD

CM CM KN M KN KN KN CASE FACTOR KN KN KN CASE FACTOR CHECK CASE

P11 PL1 243.80 7.00 0.0 96.0 -67526.4 -1488.9 -1488.9 EW18 45.35 47314.9 0.0 0.0 EW18 100.00 0.03 EW18

当在模型文件中选择采用NORSOK规范进行校核时，会有一个GAMMA系数1.3被采用。并会在’S O I L M A X I M U M A X I A L C A P A C I T Y S U M M A R Y’的下一行输出‘AXIAL PILE CAPACITIES INCLUDE AN GAMMA FACOR OF 1.30’

PSI 分析输出的list文件中桩土结果如何查看

Qiang He — Mon, 25 Feb 2019 00:34:13 GMT

Revision 1 posted to 技术资料库 by Qiang He on 2/25/2019 12:34:13 AM

SACS自动生成PILE HEAD STIFFNESS TABLE

SACS自动生成的pile head stiffness table,共包含轴向，横向，转动，扭转，四个自由度方向的生成初始刚度计算所用的表格。

AXIAL COMPRESSION CAPACITY.......... -64043.35 KN

AXIAL TENSION CAPACITY.............. 50787.80 KN

******************************* TABR CARD IMAGES *******************************

TABR AXIAL DF -4.495-1.828.83920 PL1 SOL1

TABR DEFLECTN 0. 5.080 12.70 PL1 SOL1

TABR ROTATION -.01500. .0150 PL1 SOL1

TABR TORSION 0. 11.298 PL1 SOL1

Final forces/deflections在pile head 和structural 坐标中值不同：

涉及到坐标的为第二条假设

产生平面外位移结果的原因如下：

FINAL DEFLECTIONS FOR LOAD CASE EW18

PILE HEAD COORDINATES

PILE BATTER

JOINT JOINT DEFL(X) DEFL(Y) DEFL(Z) ROT(X) ROT(Y) ROT(Z)

CM CM CM RAD RAD RAD

P11 P1B -0.2590322 9.7326087 -0.2288547 -0.0057143 0.0005213 0.0036151

P12 P1J -1.6366748 -9.9895884 -0.4766360 -0.0056787 0.0015215 -0.0031813

……

FINAL DEFLECTIONS FOR LOAD CASE EW18

STRUCTURAL COORDINATES

PILE BATTER

JOINT JOINT DEFL(X) DEFL(Y) DEFL(Z) ROT(X) ROT(Y) ROT(Z)

CM CM CM RAD RAD RAD

P11 P1B 7.9128352 -5.6712508 -0.2590322 0.0024670 0.0026934 -0.0057143

P12 P1J 4.9713053 -8.6778558 -1.6366748 0.0021402 0.0028028 -0.0056787

……

关于INTERNAL FORCES与PILE HEAD FORCES的对比结果：

FINAL PILE HEAD FORCES (KN AND KN-M ) FOR LOAD CASE EW18

PILE HEAD COORDINATES

PILE BATTER

JOINT JOINT FORCE(X) FORCE(Y) FORCE(Z) MOMENT(X) MOMENT(Y) MOMENT(Z)

P11 P1B -1579.803 3611.675 267.827 -114.285 4392.119 -28219.341

……

INTERNAL FORCES ON STRUCTURE (KN AND KN-M ) FOR LOAD CASE EW18

PILE HEAD COORDINATES

PILE BATTER

JOINT JOINT FORCE(X) FORCE(Y) FORCE(Z) MOMENT(X) MOMENT(Y) MOMENT(Z)

P11 P1B 1579.764 -3611.704 -267.850 114.286 -4392.304 28219.658

……

INTERNAL FORCES ON STRUCTURE (KN AND KN-M ) FOR LOAD CASE EW18

STRUCTURAL COORDINATES

PILE BATTER

JOINT JOINT FORCE(X) FORCE(Y) FORCE(Z) MOMENT(X) MOMENT(Y) MOMENT(Z)

P11 P1B -3135.110 1813.074 1579.764 12266.267 25791.087 114.286

……

FORCE COMPARISONS IN PILE COORDINATES FOR LOAD CASE EW18

(KN AND KN-M )

PILE STRUCTURE FORCE RELATIVE

JOINT ID DOF FORCES FORCES DIFFERENCE DIFFERENCE(%)

P11 P1B MX -114.285 114.286 0.001 0.001

MY 4392.119 -4392.303 -0.185 0.004

MZ -28219.339 28219.657 0.318 0.001

FX -1579.803 1579.764 -0.040 0.003

FY 3611.674 -3611.704 -0.030 0.001

FZ 267.827 -267.850 -0.023 0.009

PILE 应力UC结果介绍：