管道支架的合理设计

2010-06-171965—。330002〔〕、；，，；，。〔〕；；；；；：TU990.3：B：1004－4345（2010）04－0045-04RationalDesignofPipeSupportGUOLi-hong(ChinaNerinEngineeringCo.,Ltd.,Nanchang,Jiangxi330002,China)AbstractDesignconceptandmethodoffree-standingoverhead-pipesupportareintroducedinthisarticle.Inengineeringexamplesitisshownthroughcomparisonbetweenrigidtravelingsupportandflexibletravelingsupportthattheapplicationofflexibletravelingsupportcanreducebornehorizontalthrustandincreaseeconomicbenefits,andifpossiblePTFEboardcanbeusedtoreduceslidingfrictionbetweenpipeandtravelingsupport.Keywordsfree-standingoverhead-pipesupport;anchorsupport;rigidsupport;flexiblesupport;friction;reactingforcefromdisplacement2T、∏、、、、。、。。。、1。。。1。31201048。3123。。1。、。。、。PPm=κqGμ1Pmκq[1]5－3G1μ。PfPf=3EJκqΔLH3n2EJnHΔL。ΔL=α·Δt·L3αΔt()L。Pf≤PmHb≥EhnΔL4Gμ3姨PfPmHbEhnΔL4Gμ3姨。bh。2～3。、。、。G=1.2∑(qz+qw+ql)L+∑qy1.2qzkN/mqwkN/mqykN/mLG1。G=1.2∑(qz+qw+qL)LqLkN/m。:1。。2。。3。2。、、。。3。3。、、、、、++3146··。。,。A、Be、eeMNeMN。Hl0ib。1.25～1.51.25,1.5。、250～300。T(1.25～1.5)H(1.25～1.5)H2Hl0b≤40(1.25～1.5)H(1.25～1.5)H2Hl0i≤2001.25H(1.25～1.5)H2Hl0b≤301.25H(1.25～1.5)H2Hl0i≤150∏1.5H1.5H1.5H1.5Hex/A≤1/5ey/B≤1/5ex/A≤1/4ey/B≤1/4xyex/A≤1/4ey/B≤1/4180%。。。800mm7.5m1.59kN/m5.02kN/mT14m,8m5℃50℃U4、5。0.4Ec=0.85×2.55×104N/mm2α=1.19×10－3cm/m·℃。W0=0.50kN/m2μz=1,μs=1.2Wk=1×1.2×0.5=0.6kN/m2Fy=1.4×Wk×D×L＝1.4×0.6×0.8×14=9.41kNMx=Fy×H0＝9.41×8.5=80.0kN·m。H0。1、2600×600mm2500×500mm24～5。4～5600×600mm2500×500mm230.5%,。L2。4L=56mL=28m。,。,,447··、、。(2)、。。(3)。。10m×10m、。。4、、、。[1]CJJ17-2004[S].[2]GBJ22-87[S].!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!44mm2mPfkNPmkNFxkN600×6005641.1338.80PfPm38.80500×5005619.8438.80PfPm19.84289.9238.80PfPm9.92,mm2Fy,kNN,kNMx,kN·mMy,kN·m600×6009.4117580.0310.4500×5009.4115280.0158.729.4115280.079.36,mm2,mmA×Bm2600×6005614Φ25Φ8@1501.84.0×3.0500×5005614Φ20Φ8@1501.83.3×2.42812Φ18Φ8@1501.82.4×2.4,。,,,。,0.10(,0.06;0.30),。。4。。6。5、“”。[1].[M].1998.3148··