发布时间 : 星期一 文章土木工程毕业设计6 活荷载内力计算（屋面布活荷载）资料更新完毕开始阅读141659dae55c3b3567ec102de2bd960591c6d95b
3.54(1)(2)2.6825.308.87(4)(5)8.048.3921.70(3)11.0810.62(6)5.54
5．不平衡弯矩分配
4.20(7)计算过程如下（单位：kN?m），方框内为原不平衡弯矩 左梁 下柱 上柱 右梁
不平衡弯矩调整之后即可得出活荷载作用下框架弯矩图，见下页（单位：kN?m，括号内为调幅后的弯矩值）
5.35 3.48 3.48 3.48 1.22 1.98 3.48 -1.98 -1.83 -2.75 0.61 2.29 -4.16 -2.42 2.69 0.82 3.48 -3.51 -1.02 -2.75 1.15 1.82 -2.75 -1.37 1.39 1.39 3.48 -2.78 -1.37 -2.75 0.92 1.80 -2.75 -1.39 1.37 1.43 3.54 -2.8 -1.32 -2.68 0.91 0.90 -2.75 -2.07 0.71 0.46 2.41 -1.11 -1.30 18.0218.0225.0624.4111.2713.1419.9024.81(21.09)10.51(8.93)4.9514.30(4.46)(23.62)(15.32)(30.07)(20.75)27.797.85(6.67)10.672.449.27(2.20)27.32(23.22)8.08(6.87)2.709.62(2.43)(23.21)8.09(6.88)2.719.57(2.44)(22.27)(23.88)(20.13)23.6811.8411.8420.569.62(24.67)(20.15)23.7011.8811.8220.5627.309.6426.2013.03(24.67)(19.55)23.009.9720.558.41(7.15)10.113.067.68(2.75)(24.66)31.084.20
M图（单位：kN?m）
6．跨中弯矩计算
118.02?24.81M5AB??6.82?7.22??22.78kN?m
821M5BC??6.0?3.02?10.51??4.5kN?m
12124.41?27.79M4AB??6.82?7.22??44.19-26.10?18.09kN?m
821M4BC??7.5?3.02?7.85?5.63?7.85??2.22kN?m
1223.68?27.32M3AB?44.19??18.69kN?m
2M3BC?5.63?8.08??2.45kN?m
M2AB?44.19?23.7?27.3?18.69kN?m 2M2BC?5.63?8.09??2.46kN?m
M1AB?44.19?23?26.2?19.59kN?m 2M1BC?5.63?8.41??2.78kN?m
因为楼面活载是按满布计算的，故跨中弯矩应乘以1.1进行放大。
7．剪力计算
顶层中跨端部剪力V5BC?6.0?其他层中跨段部剪力VBC1.5?4.5kN 21.5?7.5??5.63kN
2各边跨段部剪力：
18.02-24.813.9140.95V5AB??7.8?(7.2?)???0.94??19.54kN
7.2222V5BA?40.95?19.54?6.87kN
V4AB?24.41-27.791??40.95?20.01kN
7.22V4BA?40.95?20.01?20.94kN
V3AB?23.68-27.321??40.95?19.97kN
7.22V3BA?40.95?19.97kN
V2AB?23.7-27.31??40.95?19.98kN 7.22V2BA?40.95?19.98?20.97kN
V1AB?23-26.21??40.95?20.04kN 7.22V1BA?40.95?20.04?20.91kN
8．轴力计算
N5A?39.75?19.54?59.29kN
N4A?59.29?39.75?20.01?119.05kN N3A?119.05?39.75?19.97?178.77kN
N2A?178.77?39.75?19.98?238.5kN N1A?238.5?39.75?20.04?298.29kN N5B?61.62?4.5?21.41?87.53kN
N4B?87.53?5.63?67.09?20.94?181.19kN N3B?181.19?72.72?20.98?274.89kN
N2B?274.89?72.72?20.97?368.58kN N1B?368.58?72.72?20.91?462.21kN
框架结构的剪力图和轴力图如下（单位：kN）
19.544.5021.4120.015.6320.9419.975.6320.98274.8919.985.6320.97368.5820.045.6320.91462.21298.29238.5087.5759.20181.19119.05178.77V N
V，N图（单位：kN）
9．弯矩调幅
边跨：端部弯矩值乘以0.85，跨中弯矩值乘以1.2 中跨：端部弯矩值乘以0.85，跨中弯矩值乘以0.9 将调幅后的弯矩值表于框架弯矩图的（）内
10．梁端柱边剪力与弯矩 V (kN) M (kN?m)
19.36 -21.23 4.32 -9.51 14.72 -7.63 19.83 -20.76 5.41 -14.8 17.39 -5.05 19.79 -20.8 5.41 -14.19 16.98 -5.25 19.80 -20.79 5.41 -14.21 16.97 -5.26 19.83 -20.7 5.37 -13.11 15.54 -5.40