拱壩設(shè)計(jì)計(jì)算書

表2.2-1組成各滑動(dòng)塊體的節(jié)理面產(chǎn)狀參數(shù)表左塊體一（606-676.6）左塊體二（606-646）右塊體一（606-676.6）右塊體二（606-646）P1P2P3P1P2P3P1P2P3P1P2P3走向320°55°88°320°55°88°50°320°88°50°320°88°傾向SWSENWSWSENWSESWNWSESWNW傾角78°70°36°78°70°36°70°78°36°70°78°36°節(jié)理④②層面④②層面②④層面②④層面滑動(dòng)動(dòng)塊體計(jì)算圖平面投影見圖2.2-2。圖2.2-2各滑動(dòng)體計(jì)算圖2.3荷載與荷載組合拱壩壩肩穩(wěn)定分析中考慮的作用荷載有：壩體作用與滑動(dòng)體的作用力（包括拱端軸向力Ha，徑向剪力Va，梁底切向剪力Vct，梁底徑向剪Vcr，垂直力W1。由拱梁分載法應(yīng)力計(jì)算獲得其分布），滑動(dòng)體自重，作用于滑動(dòng)體各面上的揚(yáng)壓力或水壓力。荷載組合：基本組合時(shí)，以“正常蓄水位+溫降”和“校核洪水位+溫升”情況為代表情況；特殊組合時(shí)，以“校核洪水位+溫升”為代表情況。2.4荷載計(jì)算拱端力計(jì)算由于雙曲拱壩各高程拱圈拱端軸向和徑向各不相同，為計(jì)算拱端合力，以壩頂拱圈拱端的軸向和徑向?yàn)榛鶞?zhǔn)，將以下各拱圈的拱端力和梁底剪力換算成壩頂拱圈拱端的軸向和徑向兩各方向的分布力，然后根據(jù)壩肩滑動(dòng)體在壩基面出露的范圍計(jì)算壩體作用于滑動(dòng)體的合力。壩頂拱圈左拱端軸向方位角為151.98°，右拱端軸向方位角為234.82°。由拱梁分載法計(jì)算給出的左、右岸各拱圈拱端力、梁底剪力分布，以及轉(zhuǎn)換為沿壩頂拱端軸向和徑向作用力分布（沿單位高度分布）見表2.5-1到表2.5-5。表2.4-1左岸各拱圈拱端力和梁底剪力分布單位：1000kN/m拱圈號(hào)正常蓄水位+溫降高程HaVaVctcVcrW1HVW1h1676.6001.190-0.2800.0000.0000.0001.1900.2800.0002656.0008.090-1.4701.450-1.0504.8709.2512.5984.1143646.00011.150-4.6702.850-2.3408.53014.5277.34510.0024636.00013.460-10.2604.150-4.31013.09020.24014.25217.2675626.00013.810-15.4704.920-5.90017.18024.24818.64522.0376616.00011.790-17.9605.310-6.75020.37025.25018.56923.4417606.0007.600-16.4505.370-6.04021.21022.73014.05023.2448596.0000.0000.0000.070-12.67029.0308.99110.58131.814表2.4-2右岸各拱圈拱端力和梁底剪力分布單位：1000kN/m拱圈號(hào)正常蓄水位+溫降高程HaVaVctcVcrW1HVW1h1676.6003.410-0.3900.0000.0000.0003.4100.3900.0002656.0007.100-1.2801.310-1.0404.5807.6722.4592.5793646.00012.410-3.9703.410-1.8908.10014.8406.7716.9274636.00014.300-7.6403.830-3.23012.36017.84911.53112.6365626.00014.300-12.3104.890-5.01017.41020.57316.40118.5566616.00012.270-15.9805.700-6.39022.45022.26019.04124.0237606.0007.820-16.3805.930-7.46026.59021.43317.64927.2778596.0000.0000.0000.070-12.67029.0307.07810.90129.780表2.4-3左岸各拱圈拱端力和梁底剪力分布單位：1000kN/m拱圈號(hào)設(shè)計(jì)洪水位+溫升高程HaVaVctcVcrW1HVW1h1676.6005.5400.1300.0000.0000.0005.540-0.1300.0002656.00010.650-0.9300.770-0.4804.79011.2621.6294.0473646.00012.590-3.8301.770-1.7308.39014.6935.7899.8384636.00014.450-9.1302.880-3.54012.84019.37212.17416.9385626.00014.300-14.4103.540-5.12016.81022.58916.87521.5626616.00011.970-17.2204.020-6.03019.87023.50917.50522.8667606.0007.620-16.0804.340-5.51020.63021.30413.73022.6098596.0000.0000.0000.070-11.71028.4208.3159.77631.146表2.4-4右岸各拱圈拱端力和梁底剪力分布單位：1000kN/m拱圈號(hào)設(shè)計(jì)洪水位+溫升高程HaVaVctcVcrW1HVW1h1676.6007.0300.2300.0000.0000.0007.030-0.2300.0002656.0009.920-0.8900.530-0.4704.50010.1001.9322.5343646.00013.540-3.2402.010-1.3107.94014.8705.5446.7904636.00015.120-6.9102.430-2.61012.11017.28210.14812.3805626.00014.730-11.6203.430-4.32017.04019.36015.04818.1626616.00012.450-15.4604.320-5.72021.96020.75718.06523.4987606.0007.870-16.0504.810-6.87025.99020.07617.15826.6628596.0000.0000.0000.070-11.71028.4206.54710.07229.155表2.4-5左岸各拱圈拱端力和梁底剪力分布單位：1000kN/m拱圈號(hào)校核洪水位+溫升高程HaVaVctcVcrW1HVW1h1676.6005.6500.1200.0000.0000.0005.650-0.1200.0002656.00010.950-1.0100.810-0.5304.82011.5921.7604.0723646.00012.930-4.0201.860-1.8108.43015.1406.0719.8854636.00014.800-9.4302.930-3.67012.91019.82712.60717.0305626.00014.590-14.7703.680-5.26016.89023.15517.31221.6656616.00012.180-17.5604.160-6.16019.95024.01817.84922.9587606.0007.720-16.3204.470-5.61020.70021.68213.92522.6858596.0000.0000.0000.070-11.84028.5608.4069.88531.299表2.4-6右岸各拱圈拱端力和梁底剪力分布單位：1000kN/m拱圈號(hào)校核洪水位+溫升高程HaVaVctcVcrW1HVW1h1676.6007.2000.0210.0000.0000.0007.200-0.0210.0002656.00010.180-0.9500.570-0.5104.51010.3762.0362.5403646.00013.910-3.3902.120-1.3907.98015.3155.7986.8244636.00015.480-7.1402.550-2.71012.16017.75410.49512.4315626.00015.040-11.9003.570-4.43017.11019.84315.41618.2366616.00012.660-15.7404.480-5.83022.06021.20518.38523.6057606.0007.980-16.2804.960-6.98026.11020.44417.38726.7858596.0000.0000.0000.070-11.84028.5606.61910.18529.298根據(jù)各滑動(dòng)楔形體在壩基面上出露的高程范圍由表4.5-1～表4.5-5計(jì)算得出作用于各塊體拱端力見表4.5-6。表2.4-7拱壩壩端作用于各滑動(dòng)體的合力計(jì)算結(jié)果單位：1000kN滑動(dòng)塊體正常蓄水位+溫降設(shè)計(jì)洪水位+溫升校核洪水位+溫升ΣHΣVΣW1hΣHΣVΣW1hΣHΣVΣW1h左塊體一616-676.6870.185537.906630.842913.449459.492617.942936.868474.840620.948左塊體二616-646643.761458.538560.260610.615406.961548.518625.609418.796551.163右塊體一616-676.6796.432483.871514.193845.856424.905503.479868.062439.949505.641右塊體二616-646569.718408.376466.663544.562369.999456.858558.575380.030458.821B）滑動(dòng)體自重計(jì)算滑動(dòng)塊體體積由其平面圖采用平行切面法計(jì)算，巖體容重為26.3kN/m。計(jì)算結(jié)果見表2.4-8～2.4-11表2.4-8左塊體（一）體積計(jì)算表端面號(hào)切面樁號(hào)切面面積（m2）切面間距（m）區(qū)間平均面積（m2）區(qū)間體積（m3）000584015165129.5647.52102435363.51817.53154845564.52822.5420645571535755257855814.54072.56308445821.54107.57357995743.53717.5840688562431209455605495247510504305340170011552505132660126014573513650塊體體積（m3）28790表2.4-9左塊體（二）體積計(jì)算表端面號(hào)切面樁號(hào)切面面積（m2）切面間距（m）區(qū)間平均面積（m2）區(qū)間體積（m3）000532160156451628102102605280.51402.53153015288.51442.54202765244122052521251869306301605118590735765381908400塊體體積（m3）6745表2.4-10右塊體（一）體積計(jì)算表端面號(hào)切面樁號(hào)切面面積（m2）切面間距（m）區(qū)間平均面積（m2）區(qū)間體積（m3）000511.557.51523569.5347.52101165225.51127.53153355558279042078159504750525111951299.56497.5630148051429.57147.5735137951176.55882.58409745796.53982.59456195480.52402.51050342524112051155140579.5397.512601959.547.513650塊體體積（m3）36635表2.4-11右塊體（二）體積計(jì)算表端面號(hào)切面樁號(hào)切面面積（m2）切面間距（m）區(qū)間平均面積（m2）區(qū)間體積（m3）00055.527.51511547235210835166830315249532116054203935388.51942.55253845421.52107.56304595371.51857.57352845202.51012.5840121574.5372.5945285147010500塊體體積（m3）10060c）各結(jié)構(gòu)面的面積及其揚(yáng)壓力作用計(jì)算滑動(dòng)體各面上揚(yáng)壓力計(jì)算假定：取揚(yáng)壓力折減系數(shù)α=0.5?；瑒?dòng)體上游拉裂面（P1）上的揚(yáng)壓力按全水頭作用計(jì)算。各點(diǎn)揚(yáng)壓力水頭為該點(diǎn)處水深；側(cè)滑面（P2）和底滑面（P3）上的揚(yáng)壓力計(jì)算，其上游邊各點(diǎn)揚(yáng)壓力水頭為該點(diǎn)處水深乘以α；下游出露點(diǎn)的揚(yáng)壓力水頭在下游水位以下為下游水深，在下游水位以上為0，P1、P2相交棱線上揚(yáng)壓力水頭按直線分布計(jì)算?；瑒?dòng)體各面面積和其所受揚(yáng)壓力計(jì)算，以P1、P2、P3面的交點(diǎn)為公共頂點(diǎn)，將P1、P2、P3面分成許多小三角形，面積按三角形計(jì)算，各小三角形上的揚(yáng)壓力計(jì)算取三個(gè)頂點(diǎn)的揚(yáng)壓力水頭平均值乘以三角形面積，將分別各小三角形的面積和揚(yáng)壓力累加得到P1、P2、P3面的面積和揚(yáng)壓力?；瑒?dòng)塊體的結(jié)構(gòu)面面積和揚(yáng)壓力計(jì)算結(jié)果見表2.4-12和表2.4-1各表2.4-12“正常蓄水位+溫降”情況各滑動(dòng)塊體結(jié)構(gòu)面面積及揚(yáng)壓力滑動(dòng)塊體P1P2P3面積(m2)揚(yáng)壓力（1000kN）面積(m2)揚(yáng)壓力（1000kN）面積(m2)揚(yáng)壓力（1000kN）左塊體一1094.600355.76351084.128547.83472777.0868165.9510左塊體二410.5805191.8122413.635333.32811185.6322109.8434右塊體一1394.3576536.65631735.9941131.32872001.7327192.7752右塊體二562.5061284.2213734.042475.28201191.7932139.4120表2.4-13“設(shè)計(jì)洪水位+溫升”情況各滑動(dòng)塊體結(jié)構(gòu)面面積及揚(yáng)壓力滑動(dòng)塊體P1P2P3面積(m2)揚(yáng)壓力（1000kN）面積(m2)揚(yáng)壓力（1000kN）面積(m2)揚(yáng)壓力（1000kN）左塊體一1094.600356.70871084.128547.99742777.0868166.4242左塊體二410.5805192.1817413.635333.40531185.6322110.0582右塊體一1394.3576537.85281735.9941131.58912001.7327193.1294右塊體二562.5061284.7276734.042475.42391191.7932139.6348表2.4-14“校核洪水位+溫升”情況各滑動(dòng)塊體結(jié)構(gòu)面面積及揚(yáng)壓力滑動(dòng)塊體P1P2P3面積(m2)揚(yáng)壓力（1000kN）面積(m2)揚(yáng)壓力（1000kN）面積(m2)揚(yáng)壓力（1000kN）左塊體一1094.6000366.37081084.128549.65972777.0868171.2613左塊體二410.5805195.9591413.635334.19471185.6322112.2539右塊體一1394.3576550.08291735.9941134.25102001.7327196.7499右塊體二562.5061289.9026734.042476.