现浇混凝土框架结构设计计算书.doc

现浇混凝土框架结构设计计算书1、设计资料1. 某学生宿舍采用框架结构，其建筑平面图和剖面图如图1和图2。建设地点为某城市郊区，底层为食堂，层高4.5m，24层为学生宿舍，层高3.9m，室内外高差为0.6m。基本风压为 。不考虑抗震设防。2. 楼面和屋面采用现浇钢筋混凝土肋形楼盖结构，板厚120mm。3. 屋面采用柔性防水，屋面构造层的恒载标准值为，屋面为上人屋面，活荷载标准值为。4. 楼面构造层的恒载标准值为，楼面活荷载标准值为。5. 墙体采用灰砂砖，重度，外墙贴瓷砖，墙面重，内墙采用水泥粉刷，墙面重。6. 木框玻璃窗重，木门重。7. 梁的混凝土等级为C30，柱的混凝土等级为C30，钢筋为HRB335。图1 建筑平面图图2 建筑剖面图小组号(m)(m)(m)(m)17.262.45.0（4.2）27.25.72.45.0（4.2）36.662.15.0（4.2）46.65.72.15.0（4.2）57.262.44.5（3.9）67.25.72.44.5（3.9）76.662.14.5（3.9）86.65.72.14.5（3.9）2、结构布置及结构计算简图的确定结构平面布置图见图3边跨梁：AB跨：，CD跨：，取，。中跨（BC跨）梁：取，。边柱：A轴连系梁：，D轴连系梁：取，。中柱（B轴、C轴）连系梁：取，。1层柱截面：。2-4层柱截面：。结构计算简图见图4 图3结构平面布置图 图4 结构计算简图 （图中线刚度单位为：求梁截面惯性矩时考虑到现浇楼板的作用，取，各梁柱线刚度标在结构计算简图图4中。AB跨梁：CD跨梁：BC跨梁：上部柱：底层柱：3、荷载计算 3.1.恒载计算（1）屋面框架梁线荷载标准值： 120mm厚现浇钢筋混凝土楼板 0.1225=3.0 构造层 3.24 15mm厚纸筋石灰抹底 0.01516=0.24 屋面恒荷载： 边跨框架梁自重 0.30.625=4.5 梁侧粉刷 20.6-0.120.36=0.35 中跨框架梁自重 0.40.2525=2.5 梁侧粉刷 20.4-0.120.36=0.20 因此，作用在顶层框架梁上的线荷载：（2）楼面框架梁线荷载标准值：120mm厚现浇钢筋混凝土楼板 0.1225=3.0 构造层 1.56 15mm厚纸筋石灰抹底 0.01516=0.24 楼面恒荷载边跨框架梁及梁侧粉刷 4.85 边跨填充墙自重 0.183.9-0.618=10.69 墙面粉刷 23.9-0.60.36=2.38 中跨框架梁及梁侧粉刷 2.70因此，作用在中间层框架梁上的线荷载为：（3）屋面框架节点集中荷载标准值： 边柱连系梁自重 0.250.5625=18.75kN 粉刷 2（0.5-0.12）6（0.5+0.36）/2=1.96kN 0.9m高女儿墙自重 0.90.24618=23.33 kN 女儿墙外瓷砖 20.960.5=5.4kN AB连系梁传来屋面自重 6/26/26.48=58.32kNCD连系梁传来屋面自重 （6+6-5.7）/25.7/26.48=58.17kN因此，顶层边节点集中荷载 中柱连系梁自重 0.40.25625=15kN 粉刷 20.4-0.1260.36=1.21kN AB连系梁传来屋面自重 6/26/26.48+ 0.5（6+6-2.1）2.1/26.48=92kNCD连系梁传来屋面自重 6/26/26.48+ 0.5（6+6-5.7）5.7/26.48=91.85kN因此，顶层中节点集中荷载 （4）楼面框架节点集中荷载标准值 边柱连系梁自重 18.75kN 粉刷 1.96kN 木框玻璃窗自重 3.62.40.3=2.59kN墙体面积 （6-0.4）（3.9-0.5）-3.62.4=10.4m2墙体自重 10.40.2418=44.93kN 内粉刷+外瓷砖 10.40.36+0.50.5=8.94kN 框架柱自重 0.40.453.925=17.55kN 内粉刷+外瓷砖 0.43.9（0.5+0.36）=1.34kN连系梁传来楼面自重 6/26/24.8=43.2kN （6+6-5.7）/25.7/24.8=43.09kN因此，中间层边节点集中荷载 中柱连系梁自重 15kN 粉刷 1.21kN 内纵墙自重 6-0.43.9-0.50.1818=61.69kN粉刷 26-0.4（3.9-0.5）0.36=14.77kN 扣除门洞加门重 -2.41.2180.18-0.2= - 8.76kN 框架柱自重 17.55kN 粉刷 1.34kN连系梁传来楼面自重 6/26/24.8+0.5（6+6-2.1）2.1/24.8=68.15kN 6/26/24.8+0.5（6+6-5.7）5.7/24.8=68.04kN因此，中间层中节点集中荷载 恒荷载作用下的结构计算简图见图5。 图5 恒荷载内力计算简图 3.2.活载计算活载作用下的结构计算简图见图6。 图6 活荷载内力计算简图 3.3.风荷载计算计算公式 ，左风荷载作用下的结构计算简图见图7。因结构高度为16.2m30m，可取=1.0，对于矩形平面=1.3， 计算过程见表1，z为框架节点至室外地面高度，A为一榀框架各层节点的受风面积。风载计算表（表1）层次（m）（）（）41.01.316.21.1800.517.113.1231.01.312.31.0810.523.416.4421.01.38.41.00.523.415.2111.01.34.51.00.525.216.38图7 左风载作用下结构计算简图4、内力计算 4.1 恒荷载作用下的内力计算 中间层：把梯形（及三角形）荷载化作等效均布荷载边跨梁AB: 中跨梁BC： 边跨梁CD：弯矩分配计算见表2。 弯矩分配计算表（表2）节点ABCD杆端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分配系数0.230.230.540.380.160.160.30.280.150.150.420.580.210.21固端弯矩-123.71123.71-3.313.31-97.2397.23分配传递28.4528.4566.8133.41-29.23-58.45-24.61-24.61-46.14-23.076.726.7215.797.9016.3832.7617.5517.5549.1324.57-4.62-9.24-3.88-3.88-7.28-3.64-35.52-70.64-25.58-25.581.061.062.51.255.4610.925.845.8416.368.18-1.28-2.56-1.07-1.07-2.01-1.01-2.37-4.74-1.72-1.720.290.290.70.350.470.940.510.511.420.71-0.16-0.31-0.13-0.13-0.25-0.13-0.21-0.41-0.15-0.15杆端弯矩36.5236.52-73.296.06-29.43-29.43-36.6820.0823.923.9-68.2254.9-27.45-27.45柱端弯矩12.1712.17-24.432.02-9.81-9.81-12.236.697.977.97-22.7418.3-9.15-9.15分层法算得的弯矩与结构力学求解器求得的弯矩存在很小的差距，相对偏小。但是对整个结构基本没影响，因而用结构力学求解器求得的弯矩可以用于后面的设计计算。结构力学求解器求得的恒荷载的弯矩图见图8、剪力图见图9、轴力图见图10。 图8 恒荷载作用下的弯矩图 图9 恒荷载作用下的剪力图 图10 恒荷载作用下的轴力图4.2楼面活荷载作用下的内力计算 活荷载作用下的内力计算也采用分层法，故不再具体计算。用结构力学求解器求得的活荷载的弯矩图见图11、剪力图见12、轴力图见13。 图11 活荷载作用下的弯矩图 图12 活荷载作用下的剪力图 图13 活荷载作用下的轴力图4.3风荷载作用下内力计算风荷载作用下的内力计算采用D值法。左风作用与右风作用的内力值大小一样，方向相反。因此计算了左风荷载来代表。用D值法计算得到的结果见表3，用结构力学求解器求得的左风荷载的弯矩图见图14、剪力图见图15、轴力图见图16。 D值法计算内力表（表3） K V（kN）y0M上（）M下()第4层 A2.110.512.810.4066.514.45 B3.740.653.580.457.686.28 C4.060.673.690.457.926.48 D2.430.553.030.4226.834.99第3层A2.110.516.120.45612.9810.88 B3.740.657.80.515.2115.21 C4.060.678.040.515.6815.68 D2.430.556.60.47213.5912.15第2层 A2.110.519.380.45619.916.68 B3.740.6511.950.523.323.3 C4.060.6712.320.524.0224.02 D2.430.5510.110.47220.8218.61第1层 A1.970.6213.610.5530.6237.43 B3.490.7316.020.5536.0544.01 C3.760.7416.240.5536.5444.66 D2.270.6514.270.5532.1139.24 图14 左风荷载作用下的弯矩图 图15 左风荷载作用下的剪力图 图16 左风荷载作用下的轴力图5、内力组合 根据前面内力计算结果，即可进行框架各梁柱各控制截面上的内力组合，梁的控制截面为梁端柱边及跨中；柱的为柱顶和柱底。梁控制截面上的内力组合见表4，柱控制截面上的内力组合见表5。层次截面位置内力恒载活载风载左风载右恒1.2恒1.2+活1.4恒1.2+活1.4+左风1.40.6恒1.2+活1.4+右风1.40.6最不利组合4AM-32.36-7.745.93-5.93-38.832-49.668-44.6868-54.6492-54.6492V79.1519.96-1.961.9694.98122.924121.2776124.5704124.5704AB梁跨中M84.321.62-0.150.15101.16131.428131.302131.554131.554B左M-54.37-13.52-6.236.23-65.244-84.172-89.4052-78.9388-89.4052V-86.25-21.83-1.961.96-103.5-134.062-135.708-132.416-135.708B右M-29.36-7.60.89-0.89-35.232-45.872-45.1244-46.6196-46.6196V15.113.63-1.051.0518.13223.21422.33224.09624.096BC梁跨中M-19.44-5.1600-23.328-30.552-30.552-30.552-30.552C左M-19.88-5.23-0.90.9-23.856-31.178-31.934-30.422-31.934V-3.96-0.84-1.051.05-4.752-5.928-6.81-5.046-6.81C右M-34.5-8.786.18-6.18-41.4-53.692-48.5008-58.8832-58.8832V79.2420.45-2.282.2895.088123.718121.8028125.6332125.6332CD梁跨中M72.5418.920.13-0.1387.048113.536113.6452113.4268113.6452DM-23.96-5.74-5.915.91-28.752-36.788-41.7524-31.8236-41.7524V-75.26-19.3-2.282.28-90.312-117.332-119.247-115.417-119.2473AM-62.14-12.8515.9-15.9-74.568-92.558-79.202-105.914-105.914V100.119.89-4.554.55120.12147.966144.144151.788151.788AB梁跨中M83.7416.281.79-1.79100.488123.28124.7836121.7764124.7836B左M-96.53-19.09-12.3112.31-115.836-142.562-152.902-132.222-152.902V-111.19-21.9-4.554.55-133.428-164.088-167.91-160.266-167.91B右M-55.02-10.229.55-9.55-66.024-80.332-72.31-88.354-88.354V15.643.35-11.1311.1318.76823.45814.108832.807232.8072BC梁跨中M-41.63-8.130.09-0.09-49.956-61.338-61.2624-61.4136-61.4136C左M-41.45-8.31-9.369.36-49.74-61.374-69.2364-53.5116-69.2364V0.34-1.11-11.1311.130.408-1.146-10.49528.2032-10.4952C右M-66.73-14.212.63-12.63-80.076-99.956-89.3468-110.565-110.565V98.8120.63-5.55.5118.572147.454142.834152.074152.074CD梁跨中M68.2913.99-1.941.9481.948101.53499.9044103.1636103.1636DM-47.42-10.19-16.5116.51-56.904-71.17-85.0384-57.3016-85.0384V-91.52-19.12-5.55.5-109.824-136.592-141.212-131.972-141.2122AM-64.97-12.8128.28-28.28-77.964-95.898-72.1428-119.653-119.653V103.3220.43-8.618.61123.984152.586145.3536159.8184159.8184AB梁跨中M90.917.991.59-1.59109.08134.266135.6016132.9304135.6016B左M-79.36-15.7-25.125.1-95.232-117.212-138.296-96.128-138.296V-107.97-21.36-8.618.61-129.564-159.468-166.7-152.236-166.7B右M-24.52-4.911.58-11.58-29.424-36.284-26.5568-46.0112-46.0112V12.723.06-13.4213.4215.26419.5488.275230.820830.8208BC梁跨中M-15.73-3.190.17-0.17-18.876-23.342-23.1992-23.4848-23.4848C左M-15.89-3.49-11.2411.24-19.068-23.954-33.3956-14.5124-33.3956V-2.58-1.41-13.4213.42-3.096-5.07-16.34286.2028-16.3428C右M-52.6-11.1926.27-26.27-63.12-78.786-56.7192-100.853-100.853V95.8820.1-10.5710.57115.056143.196134.3172152.0748152.0748CD梁跨中M74.6815.58-1.751.7589.616111.428109.958112.898112.898DM-48.79-10.02-29.7629.76-58.548-72.576-97.5744-47.5776-97.5744V-94.44-19.95-10.5710.57-113.328-141.258-150.137-132.379-150.1371AM-60.26-11.9544.01-44.01-72.312-89.042-52.0736-126.01-126.01V102.7520.32-13.0713.07123.3151.748140.7692162.7268162.7268AB梁跨中M93.8518.533.49-3.49112.62138.562141.4936135.6304141.4936B左M-78.18-15.5-37.0237.02-93.816-115.516-146.613-84.4192-146.613V-108.54-21.47-13.0713.07-130.248-160.306-171.285-149.327-171.285B右M-26.64-5.2718.08-18.08-31.968-39.346-24.1588-54.5332-54.5332V13.373.16-20.9220.9216.04420.4682.895238.040838.0408BC梁跨中M-16.89-3.440.3-0.3-20.268-25.084-24.832-25.336-25.336C左M-16.92-3.7-17.4917.49-20.304-25.484-40.1756-10.7924-40.1756V-1.93-1.31-20.9220.92-2.316-4.15-21.722813.4228-21.7228C右M-51.79-11.0338.73-38.73-62.148-77.59-45.0568-110.123-110.123V96.5920.23-16.0316.03115.908144.23130.7648157.6952157.6952CD梁跨中M77.3616.09-3.743.7492.832115.358112.2164118.4996118.4996DM-44.23-9.16-46.2246.22-53.076-65.9-104.725-27.0752-104.725V-93.74-19.52-16.0316.03-112.488-139.816-153.281-126.351-153.281柱控制截面内力组合表（表5）层次截面位置内力恒载活载风载左风载右恒1.2恒1.2+活1.4恒1.2+活1.4+左风1.40.6恒1.2+活1.4+右风1.40.6最不利组合4A柱M上-42.11-10.355.52-5.52-50.532-65.022-60.3852-69.6588-69.6588M下36.57.84-3.253.2543.854.77652.04657.50657.506N-192.25-39.311.96-1.96-230.7-285.734-284.088-287.38-287.38V-23.82-5.512.66-2.66-28.584-36.298-34.0636-38.5324-38.5324B柱M上36.188.866.96-6.9643.41655.8261.666449.973661.6664M下-28.47-6.28-6.546.54-34.164-42.956-48.4496-37.4624-48.4496N-217.15-55.73-0.910.91-260.58-338.602-339.366-337.838-339.366V18.474.333.86-3.8622.16428.22631.468424.983631.4684C柱M上-27.59-6.996.97-6.97-33.108-42.894-37.0392-48.7488-48.7488M下21.434.89-6.596.5925.71632.56227.026438.097638.0976N-199.32-51.681.23-1.23-239.184-311.536-310.503-312.569-312.569V-14.01-3.43.88-3.88-16.812-21.572-18.3128-24.8312-24.8312D柱M上34.378.535.55-5.5541.24453.18657.84848.52457.848M下-29.51-6.58-3.473.47-35.412-44.624-47.5388-41.7092-47.5388N-188.7-38.76-2.282.28-226.44-280.704-282.619-278.789-282.619V19.364.582.73-2.7323.23229.64431.937227.350831.93723A柱M上-33.6-6.3910.95-10.95-40.32-49.266-40.068-58.464-58.464M下35.326.93-8.938.9342.38452.08644.584859.587259.5872N-438.43-78.546.51-6.51-526.116-636.072-630.604-641.54-641.54V-20.89-4.046.03-6.03-25.068-30.724-25.6588-35.7892-35.7892B柱M上26.174.9615.99-15.9931.40438.34851.779624.916451.7796M下-31.27-6.06-13.7713.77-37.524-46.008-57.5748-34.4412-57.5748N-522.49-111.265.67-5.67-626.988-782.752-777.989-787.515-787.515V16.413.158.5-8.519.69224.10231.24216.96231.242C柱M上-19.51-3.9216.21-16.21-23.412-28.9-15.2836-42.5164-42.5164M下23.284.78-14.1714.1727.93634.62822.725246.530846.5308N-476.55-103.81-4.44.4-571.86-717.194-720.89-713.498-720.89V-12.23-2.498.68-8.68-14.676-18.162-10.8708-25.4532-25.4532D柱M上26.835.3511.42-11.4232.19639.68649.278830.093249.2788M下-28.31-5.79-9.549.54-33.972-42.078-50.0916-34.0644-50.0916N-426.55-77.34-7.787.78-511.86-620.136-626.671-613.601-626.671V16.713.376.35-6.3520.05224.7730.10419.43630.1042A柱M上-38.29-7.6216.55-16.55-45.948-56.616-42.714-70.518-70.518M下39.997.94-13.3313.3347.98859.10447.906870.301270.3012N-687.84-118.3215.12-15.12-825.408-991.056-978.355-1003.76-1003.76V-23.72-4.719.05-9.05-28.464-35.058-27.456-42.66-42.66B柱M上36.167.1223.06-23.0643.39253.3672.730433.989672.7304M下-37.26-7.32-21.6521.65-44.712-54.96-73.146-36.774-73.146N-821.68-165.9610