《建筑结构设计中的活荷载内力计算案例综述》1300字

建筑结构设计中的活荷载内力计算案例综述1.1活荷载固端弯矩计算表4-7活荷载的跨中及固端弯矩楼层位置线载大小梁计算长度(m)固端弯矩跨中弯矩屋面AB/CD跨6.4137.2027.7041.55BC跨3.7503.002.814.22楼面AB/CD跨6.4137.2027.7041.55BC跨4.6883.003.525.271.2活荷载弯矩二次分配过程上柱下柱右梁左梁上柱下柱右梁左梁上柱下柱右梁左梁上柱下柱0.5920.4080.3080.4470.2450.2450.4470.3080.4080.592偏心矩偏心矩偏心矩偏心矩4.86-27.7027.707.43-2.812.81-7.43-27.7027.70-4.8613.539.32-9.95-14.44-7.927.9214.449.95-9.32-13.534.25-4.974.66-4.983.96-3.964.98-4.664.97-4.250.430.30-1.12-1.63-0.890.891.631.12-0.30-0.4318.20-23.0621.29-21.05-7.677.6721.05-21.2923.06-18.200.3720.3720.2560.2130.3090.3090.1690.1690.3090.3090.2130.2560.3720.3724.86-27.7027.708.07-3.523.52-8.07-27.7027.70-4.868.508.505.85-6.86-9.96-9.96-5.465.469.969.966.86-5.85-8.50-8.506.764.25-3.432.93-7.22-4.982.73-2.737.224.98-2.933.43-6.76-4.25-2.82-2.82-1.941.392.022.021.11-1.11-2.02-2.02-1.391.942.822.8212.449.92-27.2225.16-15.16-12.92-5.145.1415.1612.92-25.1627.22-12.44-9.920.3720.3720.2560.2130.3090.3090.1690.1690.3090.3090.2130.2560.3720.3724.86-27.7027.708.07-3.523.52-8.07-27.7027.70-4.868.508.505.85-6.86-9.96-9.96-5.465.469.969.966.86-5.85-8.50-8.504.254.58-3.432.93-4.98-5.302.73-2.734.985.30-2.933.43-4.25-4.58-2.01-2.01-1.380.981.431.430.78-0.78-1.43-1.43-0.981.382.012.0110.7411.07-26.6624.75-13.52-13.84-5.465.4613.5213.84-24.7526.66-10.74-11.070.4010.3230.2760.2260.3290.2640.1800.1800.3290.2640.2260.2760.4010.3234.86-27.7027.708.07-3.523.52-8.07-27.7027.70-4.869.167.376.31-7.30-10.61-8.53-5.825.8210.618.537.30-6.31-9.16-7.374.25-3.653.16-4.980.002.91-2.914.98-3.163.65-4.25-0.24-0.19-0.16-0.24-0.36-0.29-0.200.200.360.290.240.160.240.1913.177.18-25.2123.31-15.94-8.81-6.626.6215.948.81-23.3125.21-13.17-7.183.59A-4.41B4.41C-3.59D根据内力平衡条件计算跨中弯矩，先计算出简支状态下的跨中弯矩，然后根据简支状态下的跨中弯矩和支座两端弯矩求出跨中弯矩，计算公式：以1层AB跨梁为例，进行详细的过程演算，其余如下表格形式列出。41.55-(23.31-(-25.21))/2=17.29kN.m表4-8跨中弯矩计算表（kN.m）层号梁跨4AB-23.0621.2941.5519.37BC-7.677.674.22-3.45CD-23.0621.2941.5519.373AB-27.2225.1641.5515.36BC-5.145.145.270.13CD-27.2225.1641.5515.362AB-26.6624.7541.5515.85BC-5.465.465.27-0.19CD-26.6624.7541.5515.851AB-25.2123.3141.5517.29BC-6.626.625.27-1.35CD-25.2123.3141.5517.29图4-4活载弯矩图(kN.m)1.3活荷载梁柱剪力计算梁左端剪力：梁右端剪力：柱剪力剪力：、为框架梁左端和右端在简支状态下的支座反力、为框架梁左和右端弯矩、为框架柱上和下端弯矩为框架梁柱构件计算长度顶层梁活载支座反力计算：AB跨均布荷载：1/2×6.413×7.2=23.085kNBC跨均布荷载：1/2×3.75×3=5.625kN标准层梁恒载支座反力计算：AB跨均布荷载：1/2×6.413×7.2=23.085kNBC跨均布荷载：1/2×4.688×3=7.031kN以1层AB跨梁为例，进行详细的过程演算，其余如下表格形式列出。23.09-(-25.21+23.31)/7.2=23.35kN-23.09-(-25.21+23.31)/7.2=-22.82kN表4-9框架梁剪力层号梁跨l(m)4AB7.223.085-23.085-23.0621.2923.33-22.84BC35.625-5.625-7.677.675.63-5.63CD7.223.085-23.085-23.0621.2923.33-22.843AB7.223.085-23.085-27.2225.1623.37-22.80BC37.031-7.031-5.145.147.03-7.03CD7.223.085-23.085-27.2225.1623.37-22.802AB7.223.085-23.085-26.6624.7523.35-22.82BC37.031-7.031-5.465.467.03-7.03CD7.223.085-23.085-26.6624.7523.35-22.821AB7.223.085-23.085-25.2123.3123.35-22.82BC37.031-7.031-6.626.627.03-7.03CD7.223.085-23.085-25.2123.3123.35-22.82以1层A柱为例，进行详细的过程演算，其余如下表格形式列出。-(7.18+3.59)/4.85=-2.22kN表4-10框架柱剪力柱编号层号层高A43.918.2012.44-7.8633.99.9210.74-5.3023.911.0713.17-6.2214.857.183.59-2.22B43.9-21.05-15.169.2933.9-12.92-13.526.7823.9-13.84-15.947.6414.85-8.81-4.412.73C43.921.0515.16-9.2933.912.9213.52-6.7823.913.8415.94-7.6414.858.814.41-2.73D43.9-18.20-12.447.8633.9-9.92-10.745.3023.9-11.07-13.176.2214.85-7.18-3.592.22图4-5活载剪力图(kN)1.4活载作用柱子轴力计算框架柱顶轴力：框架柱底轴力：指每层纵向梁传递给框架柱恒载，、分别为框架柱左、右端梁剪力，以A柱计算轴力为例，进行详细的过程演算，其余如下表格形式列出。32.4-0+23.33=55.73kN55.73+32.4-0+23.37=111.50kN111.5+32.4-0+23.35=167.25kN167.25+32.4-0+23.35=223.00kN表4-11框架柱轴力柱编号层号柱顶柱底A432.400023.3355.7355.73332.400023.37111.50111.50232.400023.35167.25167.25132.400023.35223.00223.00B449.500-22.845.6377.9677.96353.775-22.807.03161.57161.57253.775-22.827.03245.19245.19153.775-22.827.03328.82328.82C449.500-5.6322.8477.9677.96353.775