30m箱梁预应力张拉计算书

连霍洛三段（豫陕界）TJ-22连霍洛三段（豫陕界）TJ-22标30米后张法预应力箱梁张拉计算书PAGEPAGE2730米箱梁预应力张拉计算书一、张拉设计预应力钢束为φj15.2140mm2，有单束54OVM15-5OVM15-4、N1～N3为1340Mpa，N4为1320Mpa，T1为1395Mpa，T2。二、张拉设备选用1、张拉设备能力计算（以单束5根为例，边跨N1～N3）P=σ控×A×n=1340×106N/m2×140×10-6m2×5=938KN=93.8T（按一端回缩m计3%σ控：Pmax=P×103%=96.6T2、张拉设备行程（以最长钢束拉力无磨阻损失为例）ΔL=σ控×L/Ep=1340×106×30.92×103/(1.95×1011)=212.5mm张拉时为两侧张拉,单侧伸长量为212.5/2=106.3mm所选用QYC150型穿心式液压千斤顶,其张拉力T=150T，行程ls=400mm。3、压力表选用150T千斤顶活塞面积为290cm2。由式Pn=P/An（式中Pn —计算压力表读数；P—张拉力；An，得：Pn=96.6×104N/29000mm2=33.31N/mm2所选用最大读数为60MPa的压力表。三、分级张拉段划分张拉力10%σ控、20%σ控、100%σ控、103%σ控四个阶段，各阶段张拉力分别为：张拉力张拉阶段5φs15.24φs15.210%σ控（KN）93.873.920%σ控（KN）187.6147.8100%σ控（KN）938739.2103%σ控（KN）966.1761.4四、应力张拉操作程序初张拉至k（准确测量伸长量，持荷30.2δk33锚固。不再采用超张拉工艺。五、理论伸长量计算根据公路桥规12.8.3款和附录G-8规定，对预应力钢铰线理论伸长量进行计算：1、计算公式：p（p（公式）Pp=×（+）/（公式）连霍洛三段（豫陕界）改扩建工程TJ-22标 30米后张法预应力箱梁张拉计算书式中，ΔL—PpL—Ep—弹性模量，N/mm2，取Ep=1.95×105N/mm2；Ap140mm2；Pxk—管道偏差系数，取k=0.0015；μ—管道磨阻系数，取μ=0.25；锚具变形、钢筋回缩取（一端；2、分段方法：ABBCCDDE4长度。3、计算方法：(1BC的终点CCDPz=Pq×e-(KX+μθ)（公式3）28连霍洛三段（豫陕界）TJ-22连霍洛三段（豫陕界）TJ-22标30米后张法预应力箱梁张拉计算书Pz—分段终点力（N）Pq—分段的起点力（N）3(2)根据每一段起点力Pq代入公式2(3)根据Pp代入公式1计算出每一段的伸长值全长钢绞线伸长量。4、计算数据：单根钢绞线千斤顶张拉力N1～N3PΔkAp=1340k×Ap=1395×140=195300(N)，T2P=Δk×Ap=1340×如下：N1钢束计算表Ⅰ.边跨引申量计算表N1钢束计算表分段x(mm)θ(rad)kx+μθe-(kx+μθ)Pq(N)Pz(N)Pp(N)△L(mm)L11582.500.002370.99763187600187155.21187377.5210.9L2654.50.02620.007530.99250187155.21185751.83186452.644.5L32567.600.003850.99616185751.83185037.80185394.5917.4L47330.40.12220.041540.95931185037.80177509.00181247.3448.7L5266000.003990.99602177509.00176802.15177155.3417.3合计14795197.429连霍洛三段（豫陕界）TJ-22连霍洛三段（豫陕界）TJ-22标30米后张法预应力箱梁张拉计算书N3钢束计算表N3钢束计算表N1钢束计算表L2 733.040.02440.007210.99282195006.39194872.68193736.78L3100.00490 0.99536192472.68193080.05192026.024.881.8合计0分段x(mm)θ(rad)kx+μθe-(kx+μθ)Pq(N)Pz(N)Pp(N)△L(mm)L11582.500.002370.99763187600187155.21187377.5210.9L2654.50.02620.007530.99250187155.21185751.83186452.644.5L3380.0800.000570.99943185751.83185645.96185698.892.6L44886.90.12220.037870.96283185645.96178746.36182174.3832.6L5730600.010960.98910178746.36176798.17177770.4847.6合计14810196.2N2钢束计算表分段x(mm)θ(rad)kx+μθe-(kx+μθ)Pq(N)Pz(N)Pp(N)△L(mm)L11582.500.002370.99763187600187155.21187377.5210.9L2654.50.02620.007530.99250187155.21185751.83186452.644.5L31477.300.002220.99779185751.83185340.66185546.1710.0L46108.70.12220.039710.96107185340.66178125.67181709.2940.7L5498200.007470.99255178125.67176799.49177461.7532.4合计14805196.8分段x(mm)θ(rad)kx+μθe-(kx+)Pq(N)Pz(N)Pp(N)△L(mm)L1101600.001520.99848195300.00195006.39195153.167.2连霍洛三段（豫陕界）TJ-22连霍洛三段（豫陕界）TJ-22标30米后张法预应力箱梁张拉计算书边跨钢束张拉力与油表读数对应表边跨钢束张拉力与油表读数对应表1#千斤顶2#千斤顶编号拉力级张拉力（KN）表号：12.8.4.125油表读数伸长量（MPa) (mm)表号：12.8.4.104油表读数伸长量（MPa) (mm)表号：12.8.4.189油表读数伸长量（MPa) (mm)表号：12.8.4.194油表读数伸长量（MPa) (mm)初始张拉10%93.85.17203.79203.94203.3320N1持荷3min20%187.69.50408.16408.22407.7340终张100%93844.0919843.1319842.4419842.92198初始张拉10%93.85.17203.79203.94203.3320N2持荷3min20%187.69.50398.16398.22397.7339终张100%93844.0919743.1319742.4419742.92197初始张拉10%93.85.17203.79203.94203.3320N3持荷3min20%187.69.50408.16408.22407.7340终张100%93844.0919843.1319842.4419842.92198初始张拉10%73.924.25202.86203.04202.4020N4持荷3min20%147.87.66396.31396.41395.8639终张100%739.234.9219533.8719533.3719533.60195初始张拉10%97.655.3563.9764.1263.516T1持荷3min20%195.39.85138.52138.57138.0913终张100%976.545.866444.926444.206444.7364初始张拉10%93.85.17113.79113.94113.3311T2持荷3min20%187.69.50228.16228.22227.7322终张100%93844.0910843.1310842.4410842.9210831连霍洛三段（豫陕界）TJ-22连霍洛三段（豫陕界）TJ-22标30米后张法预应力箱梁张拉计算书PAGEPAGE34N2钢束计算表N3钢束计算表N2钢束计算表N3钢束计算表N1钢束计算表Ⅱ.中跨引申量计算表N1钢束计算表分段x(mm)θ(rad)kx+μθe-(kx+μθ)Pq(N)Pz(N)Pp(N)△L(mm)L11582.500.002370.99763187600187155.21187377.5210.9L2654.50.02620.007530.99250187155.21185751.83186452.644.5L34608.600.006910.99311185751.83184472.17185111.2731.2L47330.40.12220.041540.95931184472.17176966.38180693.3048.5L556900.000850.99915176966.38176815.41176890.883.7合计14745197.6分段x(mm)θ(rad)kx+μθe-(kx+μθ)Pq(N)Pz(N)Pp(N)△L(mm)L11582.500.002370.99763187600187155.21187377.5210.9L2654.50.02620.007530.99250187155.21185751.83186452.644.5L33827.300.005740.99428185751.83184688.48185219.6526.0L46108.70.12220.039710.96107184688.48177498.88181069.8940.5L5260200.003900.99610177498.88176807.45177152.9416.9合计14775197.4分段x(mm)θ(rad)kx+μθe-(kx+μθ)Pq(N)Pz(N)Pp(N)△L(mm)L11582.500.002370.99763187600187155.21187377.5210.9L2654.50.02620.007530.99250187155.21185751.83186452.644.5L33041.100.004560.99545185751.83184906.43185328.8120.6L44886.90.12220.037870.96283184906.43178034.31181448.6832.5L5463500.006950.99307178034.31176800.82177416.8530.1合计14800197.2T1钢束计算表T2钢束计算表N4钢束计算表T1钢束计算表T2钢束计算表N4钢束计算表分段x(mm)θ(rad)kx+μθe-(kx+μθ)Pq(N)Pz(N)Pp(N)△L(mm)L1107100.001610.99839184800.00184503.37184651.647.2L2733.040.02440.007210.99282184503.37183178.21183839.994.9L31290100.019350.98083183178.21179667.52181417.2085.7合计14705195.8分段x(mm)θ(rad)kx+μθe-(kx+μθ)Pq(N)Pz(N)Pp(N)△L(mm)L1100300.001500.99850195300.00195006.39195153.167.2L2399.330.04990.013080.98701195006.39192472.68193736.782.8L3309900.004650.99536192472.68191580.05192026.0221.8合计450163.6分段x(mm)θ(rad)kx+μθe-(kx+μθ)Pq(N)Pz(N)Pp(N)△L(mm)L1100300.001500.99850187600.00187317.97187458.956.9L2399.330.04990.013080.98701187317.97184884.15186098.412.7L3659900.009900.99015184884.15183063.11183972.1344.5合计8001108.2中跨钢束张拉力与油表读数对应表中跨钢束张拉力与油表读数对应表1#千斤顶2#千斤顶编号拉力级张拉力（KN）表号：12.8.4.125油表读数伸长量（MPa) (mm)表号：12.8.4.104油表读数伸长量（MPa) (mm)表号：12.8.4.189油表读数伸长量（MPa) (mm)表号：12.8.4.194油表读数伸长量（MPa) (mm)初始张拉10%75.044.31202.92203.09202.4520N1持荷3min20%150.17.77406.41406.51405.9740终张10