3.6结构设计——内力组合(1).docx

3.6内力组合3.6.1概述 各种荷载情况上的框架内力求得后，根据最不利又是可能的原则进行内力组合。当考虑结构塑性内力重分布的有利影响时，应在内力组合之前对竖向荷载作用下的内力进行调幅。由于构件控制截面的内力值应取自支座边缘处，为此，进行组合前。应先计算各控制截面的内力值。梁支座边缘处的内力值按式：M边=M-Vb2 , V边=M-qb2 计算；柱上端控制截面在上层梁底，柱下端控制截面在下层的梁顶。按轴线计算简图算得的柱端内力值，宜换算成控制截面处的值。为了简化起见，也可采用轴线处内力值。这样算得的钢筋用量比需要的钢筋略微多一点。具体的控制截面数据与计算在上一环节已经完成。3.6.2框架内力组合考虑的类型框架各层梁控制截面的内力组合考虑4种组合。取各种组合的最大值（绝对值）作该截面的设计内力： 1.2SGk+1.4SQk; 1.2SGk+1.4SWk ; 1.2SGk+0.9(1.4SQk+1.4SWk) ; 1.35SGk+0.71.4SQk 1.2SGk、1.4SQk、1.4SWk 分表表示恒荷载、活荷载、风荷载作用下的内力值3.6.3框架梁、柱控制截面内力值以及内力组合计算表 梁内力组合：（取值于表3-3-8（3）、表3-4-2（5）以及表3-5-2（4）内数据）控制截面恒荷载内力值层号M（G） kN.mM(F) kN.mV(G) kNV(F) kN跨中6-23.45-64.1757.9772.2469.155-40.17-73.2773.5782.8882.6443-39.92-74.0373.3383.1482.632-39.72-73.9773.3183.1682.631-42.26-72.8172.983.6182.61控制截面活荷载内力值层号M（G） kN.mM(F) kN.mV(G) kNV(F) kN跨中6-3.751.465.78-4.058.355-5.56-19.049.26-13.7614.7843-5.79-17.419.57-13.4514.782-5.76-17.449.56-13.4614.781-5.19-17.899.4-13.6314.78控制截面风荷载内力值层号M（G） kN.mM(F) kN.mV(G) kNV(F) kN跨中6-16.716.74.234.2305-44.6544.6511.311.304-77.5477.5419.6319.6303-107.6107.627.2427.2402-115.94115.9429.3529.3501-160.46160.4640.6240.620梁GF梁内力组合层次截面内力种类恒荷载活荷载风荷载内力组合内力值最大或最小值1.2+1.41.2+1.41.2+0.9*1.4（+）1.35+0.7*1.4左风右风MmaxMminVmaxMmaxMminVmaxMmaxMminVmaxMmaxMminVmax6GM（kN.m）-23.45-3.75-16.716.7-33.39-48.18-53.91 -35.333-53.91V(KN)57.975.784.234.2377.65675.4982.17783.92101.54跨中M（kN.m）69.158.350094.6782.9893.501101.54101.54V(KN)004.234.2305.9225.330 05.922FM（kN.m）-64.171.4616.7-16.7-74.96-100.38-96.21 -85.199-100.4V(KN)-72.24-4.054.234.23-92.358-80.8-86.46-101-101.55GM（kN.m）-40.17-3.75-44.6544.65-53.454-101.78-109.19 -57.905-109.2V(KN)73.575.7811.311.396.376104.1109.8105126.05跨中M（kN.m）82.6414.7800119.8699.17117.79126.05126.05V(KN)0011.311.3015.8214.238015.82FM（kN.m）-73.27-19.0444.65-44.65-114.58-150.43-168.17 -117.57-168.2V(KN)-82.88-13.7611.311.3-118.72-83.6-102.6-125-125.44GM（kN.m）-39.92-5.79-77.5477.54-56.01-140.95-152.90 -59.566-152.9V(KN)73.339.5719.6319.63101.394115.5124.79108.4126.03跨中M（kN.m）82.6314.7800119.8599.16117.78126.03126.03V(KN)0019.6319.63027.4824.734027.482FM（kN.m）-74.03-17.4177.54-77.54-113.21-197.39-208.47 -117-208.5V(KN)-83.14-13.4519.6319.63-118.598-72.3-91.98-125-125.43GM（kN.m）-39.92-5.79-107.6107.6-56.01-177.02-190.78 -59.566-190.8V(KN)73.339.5727.2427.24101.394126.1134.38108.4126.03跨中M（kN.m）82.6314.7800119.8599.16117.78126.03126.03V(KN)0027.2427.24038.1434.322038.136FM（kN.m）-74.03-17.41107.6-107.6-113.21-239.48-246.35 -117-246.3V(KN)-83.14-13.4527.2427.24-118.598-61.6-82.39-125-125.42GM（kN.m）-39.72-5.76-115.94115.94-55.728-186.79-201.01 -59.267-201V(KN)73.319.5629.3529.35101.356129.1137108.3126.03跨中M（kN.m）82.6314.7800119.8599.16117.78126.03126.03V(KN)0029.3529.35041.0936.981041.09FM（kN.m）-73.97-17.44115.94-115.94-113.18-251.08-256.82 -116.95-256.8V(KN)-83.16-13.4629.3529.35-118.636-58.7-79.77-125-125.51GM（kN.m）-42.26-5.19-160.46160.46-57.978-243.26-259.43 -62.137-259.4V(KN)72.99.440.6240.62100.64144.3150.51107.6126.01跨中M（kN.m）82.6114.7800119.8299.13117.75126.01126.01V(KN)0040.6240.62056.8751.181056.868FM（kN.m）-72.81-17.89160.46-160.46-112.418-312.02-312.09 -115.83-312.1V(KN)-83.61-13.6340.6240.62-119.414-43.5-66.32-126-126.2 柱的内力组合:G柱控制截面恒荷载层号M（t） kN.mM(b) kN.mN kNV kN6-41.637.47224.98-22.675-36.0236.47502.07-20.714-36.4736.47778.93-20.883-36.4736.471055.79-20.882-36.0739.011332.62-21.451-29.0814.541609.4-11.48G柱控制截面活荷载层号M（t） kN.mM(b) kN.mN kNV kN66.24.2121.92-2.9854.954.7690.26-2.7744.764.78158.91-2.7234.764.78227.56-2.7224.695.27296.2-2.8413.462.63364.68-1.6G柱控制截面风荷载层号M（t） kN.mM(b) kN.mN kNV kN6-16.70 10.67 4.23 7.82 5-33.98 26.70 11.30 17.34 4-50.84 41.60 19.63 26.41 3-66.00 54.88 27.24 34.54 2-61.07 84.30 29.35 41.54 1-76.13 100.91 40.62 46.59 F柱控制截面恒荷载层号M（t） kN.mM(b) kN.mN kNV kN6-16.46-14.923238.975-17.01-16.47683.289.564-16.47-16.511044.399.423-16.47-16.511405.59.422-16.35-16.71766.049.441-14.8-7.42126.995.84F柱控制截面活荷载层号M（t） kN.mM(b) kN.mN kNV kN6-4.80.328.171.2854.673.53135.53-2.3443.533.55242.58-2.0233.533.55349.63-2.0223.483.98456.69-2.1312.45-1.77563.92-0.18F柱控制截面活荷载层号M（t） kN.mM(b) kN.mN kNV kN6-4.80.328.171.2854.673.53135.53-2.3443.533.55242.58-2.0233.533.55349.63-2.0223.483.98456.69-2.1312.45-1.77563.92-0.18G轴柱内力组合表层次内力种类恒荷载活荷载风荷载内力组合内力值最大或最小值1.2+1.41.2+1.41.2+0.9*1.4（+）1.35+0.7*1.4左风右风左风右风左风右风6Mt（kN.m）-41.60 6.20 -16.70 16.70 -41.24 -73.30 -26.54 -63.15 -21.07 -50.08 -73.30 Mb（kN.m）5.89 4.21 10.67 -10.67 12.97 22.01 -7.87 25.82 -1.07 12.08 25.82 N(KN)224.98 21.92 4.23 4.23 300.66 275.90 275.90 302.93 302.93 325.20 325.20 V(KN)-22.67 -2.98 7.82 7.82 -31.38 -16.26 -16.26 -21.11 -21.11 -33.52 -33.52 5Mt（kN.m）-36.02 4.95 -33.98 33.98 -36.29 -90.80 4.35 -79.80 5.83 -43.78 -90.80 Mb（kN.m）36.47 36.47 26.70 -26.70 94.82 81.14 6.38 123.36 56.07 84.98 123.36 N(KN)502.07 90.26 11.30 11.30 728.85 618.30 618.30 730.45 730.45 766.25 766.25 V(KN)-20.71 -2.77 17.34 17.34 -28.73 -0.58 -0.58 -6.49 -6.49 -30.67 -30.67 4Mt（kN.m）-36.47 4.76 -50.84 50.84 -37.10 -114.94 27.41 -101.82 26.29 -44.57 -114.94 Mb（kN.m）36.47 4.78 41.60 -41.60 50.46 102.00 -14.48 102.20 -2.63 53.92 102.20 N(KN)778.93 158.91 19.63 19.63 1157.19 962.20 962.20 1159.68 1159.68 1207.29 1207.29 V(KN)-20.88 -2.72 26.41 26.41 -28.86 11.92 11.92 4.79 4.79 -30.85 -30.85 3Mt（kN.m）-36.47 4.76 -50.84 50.84 -37.10 -114.94 27.41 -101.82 26.29 -44.57 -114.94 Mb（kN.m）36.47 4.78 54.88 -54.88 50.46 120.60 -33.07 118.94 -19.36 53.92 120.60 N(KN)1055.79 227.56 27.24 27.24 1585.53 1305.08 1305.08 1588.00 1588.00 1648.33 1648.33 V(KN)-20.88 -2.72 34.54 34.54 -28.86 23.30 23.30 15.04 15.04 -30.85 -30.85 2Mt（kN.m）-36.07 4.69 -61.07 61.07 -36.72 -128.78 42.21 -114.32 39.57 -44.10 -128.78 Mb（kN.m）39.01 5.27 84.30 -84.30 54.19 164.83 -71.21 159.67 -52.77 57.83 164.83 N(KN)1332.62 296.20 29.35 29.35 2013.82 1640.23 1640.23 2009.34 2009.34 2089.31 2089.31 V(KN)-21.45 -2.84 41.54 41.54 -29.72 32.42 32.42 23.02 23.02 -31.74 32.42 1Mt（kN.m）-29.08 3.46 -76.13 76.13 -30.05 -141.48 71.69 -126.46 65.39 -35.87 -141.48 Mb（kN.m）14.54 2.63 100.91 -100.91 21.13 158.72 -123.83 147.91 -106.38 22.21 158.72 N(KN)1609.40 364.68 40.62 40.62 2441.83 1988.15 1988.15 2441.96 2441.96 2530.08 2530.08 V(KN)-11.48 -1.60 46.59 46.59 -16.02 51.45 51.45 42.91 42.91 -17.07 51.45 F轴柱内力组合表层次内力种类恒荷载活荷载风荷载内力组合内力值最大或最小值1.2+1.41.2+1.41.2+0.9*1.4（+）1.35+0.7*1.4左风右风左风右风左风右风6Mt（kN.m）-16.46 -4.80 -16.70 16.70 -26.47 -43.13 3.63 -46.84 -4.76 -26.93 -46.84 Mb（kN.m）0.42 0.30 10.67 -10.67 0.92 15.44 -14.43 14.33 -12.56 0.86 15.44 N(KN)323.00 28.17 4.23 4.23 427.04 393.52 393.52 428.42 428.42 463.66 463.66 V(KN)8.97 1.28 7.82 7.82 12.56 21.71 21.71 22.23 22.23 13.36 22.23 5Mt（kN.m）-17.01 4.67 -33.98 33.98 -13.87 -67.98 27.16 -57.34 28.29 -18.39 -67.98 Mb（kN.m）-16.47 -16.47 26.70 -26.70 -42.82 17.62 -57.14 -6.87 -74.16 -38.38 -74.16 N(KN)683.28 135.53 11.30 11.30 1009.68 835.76 835.76 1004.94 1004.94 1055.25 1055.25 V(KN)9.56 -2.34 17.34 17.34 8.20 35.75 35.75 30.37 30.37 10.61 35.75 4Mt（kN.m）-16.47 3.53 -50.84 50.84 -14.82 -90.94 51.41 -79.37 48.74 -18.78 -90.94 Mb（kN.m）-16.51 3.55 41.60 -41.60 -14.84 38.43 -78.05 37.08 -67.76 -18.81 -78.05 N(KN)1044.39 242.58 19.63 19.63 1592.88 1280.75 1280.75 1583.65 1583.65 1647.65 1647.65 V(KN)9.42 -2.02 26.41 26.41 8.48 48.28 48.28 42.04 42.04 10.74 48.28 3Mt（kN.m）-16.47 3.53 -50.84 50.84 -14.82 -90.94 51.41 -79.37 48.74 -18.78 -90.94 Mb（kN.m）-16.51 3.55 54.88 -54.88 -14.84 57.02 -96.64 53.81 -84.49 -18.81