盖梁配筋课程设计.doc

学 号： 课 程 设 计题 目盖梁配筋计算学 院交通学院专 业工程结构分析班 级1001班姓 名指导教师2013年11月20日混凝土结构设计原理课程设计任务书学生姓名： 专业班级： 结构1001 指导教师： 雷 建 平 工作单位： 交通学院 题 目: 长度L=16.5m的盖梁配筋设计初始条件： 1. 公路II级。双车道2. 上部结构为空心板，计算跨径为20m。每块板一端两块橡胶支座。3. 简支，桥面连续。三跨一联。4. 每块空心板加桥面铺装等共重30吨。假设不考虑边梁上的栏杆重量。5. 车道荷载及汽车制动力见规范。（假设活载平均分布于各梁）6. 不考虑温度引起的水平力。7. 盖梁及墩身混凝土材料强度等级：C30（比重可取为28kN/m3）8. 盖梁及桥墩形状见下图：（cm） 要求完成的主要任务:说明书主要内容有：1 设计任务书2 教师评定表3 目录4 总说明5 计算恒、活载内力。6 内力组合。7 支点及跨中截面纵向钢筋设计。8 箍筋设计。9 裂缝验算。10 与桥墩连接处局部承压计算及钢筋设计。11 盖梁钢筋构造图。时间安排：序号设计内容所用时间（天）1设计准备12分析资料13说明书编制44计算机辅助出图1合 计7指导教师签名： 年 月 日系主任（或责任教师）签名： 年 月 日盖梁配筋计算总说明本设计主要是对盖梁的配筋设计，仅作为学生课程设计使用。设计书包含对盖梁恒载、活载的计算，内力组合，支点及跨中截面纵向钢筋、箍筋设计，裂缝验算，及盖梁与桥墩连接处局部承压计算机钢筋设计，并附上盖梁钢筋构造图。在设计中对于一些问题进行了简化，具体简化内容于设计任务书中说明。设计主要采用规范公路桥涵设计通用规范JTG D602004，主要参考第二版叶见曙结构设计原理教材，主要采用AutoCAD2012制图。1、 恒载和活载的计算1.1恒载 盖梁自重： 上部结构： 1.2活载 汽车载荷： 2、 内力组合2.1盖梁自重作用下 支座反力： 支座弯矩： 跨中弯矩： 弯矩图：587.5195.8195.82.75m 剪力图：2.2上部结构作用下 支座反力： 支座弯矩： 跨中弯矩： 弯矩图： 剪力图：2.3汽车载荷作用下 支座剪力： 支座弯矩： 跨中弯矩： 弯矩图： 剪力图： 2.4承载能力极限状态计算时作用效应组合 判断桥梁为小桥，桥梁结构重要性系数。 支座处： 跨中处： 3、 支点及跨中截面纵向钢筋设计 根据已给到的材料，分别查得：、3.1支座处截面设计 采用绑扎钢筋骨架，按两层钢筋布置，假设： 则有效高度：3.1.1验算是否需要采用双筋截面 故不需要采用双筋截面。3.1.2求解受压区高度 将查表得到数值带入 可得， 求得：3.1.3求解所需钢筋数量 将各值代入 可得3.1.4选择并布置钢筋 考虑每层钢筋为3根，两层共6根，选择。 保护层厚度且满足要求，两层钢筋层净距为，钢筋间净距： 故， 取，则有效高度。 最小配筋率计算： 即最小配筋率不应小于，且不应小于，故取。 实际配筋率： 所以符合要求。3.2支座处截面复核3.2.1求解受压区高度 不会发生超筋现象。3.2.2求解抗弯承载力 经复核，支座处截面设计满足要求。3.3跨中截面设计 采用绑扎钢筋骨架，按两层钢筋布置，假设： 则有效高度： 由支座处的界面设计可知： 故采用单筋截面。3.3.1求解受压区高度 将查表得到数值带入 可得， 求得：3.3.2求解受压区高度 将查表得到数值带入 可得， 求得：3.3.3求解所需钢筋数量 将各值代入 可得3.3.4选择并布置钢筋 考虑每层钢筋为13根，两层共26根，选择。 保护层厚度且满足要求，两层钢筋层净距为，钢筋间净距： 故， 取，则有效高度。 最小配筋率计算： 即最小配筋率不应小于，且不应小于，故取。 实际配筋率： 所以符合要求。3.4跨中截面复核3.4.1求解受压区高度 不会发生超筋现象。3.4.2求解抗弯承载力 经复核，跨中截面设计满足要求。4、 腹筋设计4.1检查是否需要配置箍筋 支座截面： 跨中截面： 由于所以支座外侧不需要配置箍筋。 又，故可在跨中的某长度范围内按构造配置箍筋，其余区段应按计算配置箍筋。4.2计算剪力分配支座处：跨中处剪力为零。的截面距离跨中截面的距离为：在的长度内科按照构造要求布置箍筋。 根据公路桥规规定，在支座中心线向跨径长度方向不小于一倍梁高的范围内，箍筋的间距最大为。 距离支座中心线为处的计算剪力值为： 其中应由混凝土和箍筋承担的建立计算值至少为，应由弯起钢筋（包括斜筋）承担的剪力计算值最多为，设置弯起钢筋的区段长度为。4.3箍筋设计 采用直径为的四肢箍筋，箍筋截面积。且。 在等截面钢筋混凝土简支梁中，箍筋尽量做到等距离布置。为计算简便斜截面内纵筋配筋率以及截面有效高度可近似按支座截面和跨中截面的平均值取用，计算如下： 跨中截面：； 支点截面：。 则平均值分别为：，。 箍筋间距为： 确定箍筋间距的设计值应考虑公路桥规的构造要求。 现取：，且不大于 箍筋配筋率为： 综合上述计算，在支座向跨径方向的范围内，设计箍筋间距，尔后至跨中截面统一的箍筋间距取。4.4弯起钢筋设计 设焊接钢筋骨架的架立钢筋（）为，钢筋中心至梁受压翼板上边缘距离。梁上端保护层厚度。 弯起钢筋的弯起角度为，弯起钢筋末端与架立钢筋焊接。为了得到没对弯起钢筋分配的剪力，由各排弯起钢筋的末端折点应落在前一排弯起钢筋起点的构造规则来得到各派弯起钢筋的弯起点计算位置，首先要计算弯起钢筋上下弯点之间的垂直距离。 现拟弯起钢筋，将计算的各派弯起钢筋的截面的以及至支座中心距离、分配的剪力计算值、所需弯起钢筋面积、与梁轴线交点距支座中心距离的值列入下表：弯起钢筋计算表弯起点计算实际112211221861.525803579211862407655.6244161836 根据公路桥规规定简支梁的第一排弯起钢筋（对支座而言）的末端弯折点应位于支座中心截面处。 弯起钢筋的弯角为，则第一排弯筋的弯起点1距离支座距离为。 弯筋与梁纵轴线交点距离支座中心距离为：。 对于第二排弯起钢筋可得到； 分配给第二排的弯起钢筋的计算剪力值由此可以得到：其中，设弯起钢筋区段长为。 所需提供的弯起钢筋截面积为： 第二排弯起钢筋与梁轴线交点距离支座中心距离为：5、 裂缝验算 由于最大弯矩出现在跨中，所以选择跨中位置计算最大裂缝宽度。其最大裂缝宽度为： 查找规范得到：。其中， 综上得到最大裂缝宽度， 公路桥规定，在类环境下的钢筋混凝土构件，算得的裂缝宽度不应超过，上述设计符合要求。6、 与桥墩连接处局部承压设计及钢筋设计 盖梁局部承压面积： 设螺旋钢筋范围内混凝土核心面积。 混凝土局部承压强度提高系数，配置间接钢筋是局部承压强度提高系数。 配置螺旋形间接钢筋4圈，采用R235级钢筋，。螺旋圈螺距，埋置深度，单根钢筋的面积，。6.1局部承压区混凝土抗裂性验算局部承压区尺寸满足要求。6.2局部承压承载力计算局部承压区承载力满足要求。7、 盖梁钢筋构造图目录总说明1一、 恒载和活载的计算21.1恒载21.2活载2二、 内力组合22.1盖梁自重作用下22.2上部结构作用下32.3汽车载荷作用下42.4承载能力极限状态计算时作用效应组合5三、 支点及跨中截面纵向钢筋设计53.1支座处截面设计53.1.1验算是否需要采用双筋截面63.1.2求解受压区高度63.1.3求解所需钢筋数量63.1.4选择并布置钢筋63.2支座处截面复核73.2.1求解受压区高度73.2.2求解抗弯承载力73.3跨中截面设计73.3.1求解受压区高度83.3.2求解受压区高度83.3.3求解所需钢筋数量83.3.4选择并布置钢筋93.4跨中截面复核93.4.1求解受压区高度93.4.2求解抗弯承载力9四、 腹筋设计104.1检查是否需要配置箍筋104.2计算剪力分配104.3箍筋设计114.4弯起钢筋设计12五、 裂缝验算14六、 与桥墩连接处局部承压设计 及钢筋设计156.1局部承压区混凝土抗裂性验算156.2局部承压承载力计算16七、 盖梁钢筋构造图16125（英文版 ） easily blame, to prevent the broken window effect. Supervise the leading cadres to play an exemplary role, take the lead in the strict implementation of the < code > and < rule >, lead to safeguard the solemnity and authority of the party discipline, ensure that the party discipline and the laws and regulations for implementation in place. Throughout the discipline in the daily supervision and management, strengthen supervision and inspection, from the thorough investigation of violations of discipline behavior. Strengthen to key areas, key departments and key projects as well as the masses reflect the concentration of the units and departments for supervision. - strengthening supervision, discipline inspection and supervision of cadres to set an example for compliance with the < code > and < rule > is a man must be hexyl, blacksmith needs its own hardware. Discipline inspection organs as the executor of the party discipline, and supervisor of the defenders, for its supervision must be more strictly, discipline inspection and supervision of cadres to firmly establish the awareness of Party Constitution, sense of discipline and rules consciousness, politics loyalty, sense obey. Action speak Ji Ordinance to set an example of the regulations of the rule of law, strengthen supervision and accept the supervision of the firmness and consciousness, do comply with < > and < >. To firmly establish the discipline must first be disciplined, the supervisor will be subject to the supervision of "concept, and consciously safeguard and implement party compasses party, take the lead in practicing" three strict real strict, so loyal, clean, play. To be good at learning, the Constitution and the < code > as morality, politics and brought to fruition; to implement < >, do not want to, dare not, not with disciplinary ruler to supervision; to discipline a ruler, often the control inspection, and consciously in the ideological red line to draw the row Ming Good accumulation is indeed the bottom line, so that the heart has fear, said to have quit, the line has ended. Attached: indifferent to heart, calmly to the table in our life, there are many unpredictable things will happen, some good, some bad things, we cannot control is powerless to stop, but with time, you will find in life sometimes turns out to be not good, some bad things finally turned out to be a good thing, but then we muddy however did not know, this is the life teach us things. 1, life can be complex, can also be simple. Want simple life of precipitation, to have enough time to reflect, to make Become more perfect. Life is the most important thing is not to win, but the struggle; not to have conquered, but to have fought well. 2, the plain is the background of life. Live a plain life, give up on themselves is not a coward, but the wise answers; not disillusioned after the heart, such as ashes, but experience the storm after the enlightenment; not unrewarding perfunctorily, but calm attitude of life of unrestrained self-confidence. Plain living, there is no noise noisy, no earthly troubles, more did not fill in the discontent of desire, some just a calm, a calm. 3, memory of heart will not good things to erase the, life is a When no movie, pain is a beginning, the struggle is a kind of process, death is a kind of ending. Give up this giving up is the helpless, do not give up the abandoned, do not give up this giving up is ignorance, do not give up should not give up is persistent. 4, a thing figured is heaven, think impassability is hell. Since the living, to live better. Sometimes we because of too narrow-minded, too care around the chores and penny wise and pound foolish, not worth the candle. Some things to attract trouble and worry, completely depends on how we look at and deal with it. Don't always take everything back to things, and don't get into a blind alley, don't want to face, don't be narrow-minded. Poke to care, is a kind of open-minded, a free and easy. 5, I am not afraid of others behind me a knife, I afraid to look back and see stab me, is my intention to treat people; I am not afraid of the truth to tell the best friend, I'm afraid he turned to it as a joke to tell don't 6, when we are in a positive frame of mind, you will find many good things; and when we are in a negative state of mind, you will find many depressed things; life happy and worry, all is you of life attitude, optimistic, good luck; loss of sink, Eritrea company. When you are in adversity, may wish to change a point of view to think everything over to the good Think, because good mentality decided the fate of the! 7, people are tired, rest; heart tired, calm. Grow up, mature, this society read. Tired and sad, squat down, to their a hug. Because the world no one can sympathize with you, have mercy on you. You cry, tears is your own; you pain, no one can understand. Then you only tears to smile. 8, each people have youth,Each youth are a story, the life of the world never gets easier, I want what, wish the world all know, as has been the same; now want anything, for fear that others know, or like to lose the same. 9, the heart move, everything in the world is followed by birth, Rangrang, important thing is often the most difficult to open one's mouth, because words will reduce its importance; to let strangers people care about your life in the good things, the original is not easy 10, do not blame, do not laugh at who, also don't envy who. Like a person is a kind of feeling, not like a person is true. The truth is easy to explain, I feel Is unspeakable. The best travel life is that you in a strange place found a long lost touched. 11, happy life not in the bustling in, and in the peace of mind; no matter how many grievances, how uncomfortable, and ultimately to heal themselves or their own, others may got you to comfort, but never know your heart is how wanjianchuanxin. 12, ma'am, like a movie, learn to appreciate, learn to be grateful, learn tolerance, and goodness, helping others. Instead of accusing the society, as into one; and an exception is better to give than to what 13, don't envy him A sum of, don't lose your life and the life, respectively is: the former is a we experienced cannot escape in a day finally will last minute, while the latter is our persistent, we want to cherish the memory of those people and things. 14, learn to smile, learn to strong, the world you know so many people, so many people and you are, you cannot change also can't let everyone like you, so also do not want to do. Life is too short to go crazy to love to go to waste, to chase the dream to regret. 15, when temper, a blessing to go. A wounding elegant people, the key is to control their own emotions. With the mouth is the most stupid behavior. A control negative emotions than a can take a city more powerful water flow slow, language is expensive. People spent two years of time to learn to speak, but to spend a few years time to shut up. That is a kind of ability, that is a kind of wisdom. 16, life is not perfect, sometimes, growth is not a cry, not an eyeful of tears, there is no trace of emotion, there is no gleam of hope, no desire, no action, no static, there is only one kind of downward sinking feeling, sink A murky? 6? 7? 6? 7 sink? 6? 7? 6? 7 toward the bottom of the sink. 17, in some way, do not go, you will not know the other side scenery is beautiful. To you is not good, you do not mind too much, no one has an obligation to you; you learn knowledge, is you have weapons, you can start from scratch, but not unarmed; how do you treat people, does not represent how others treat you, if cannot see through this point, only inviting worry. 18, time is like a sponge in the water, as long as you are willing to squeeze, the total water is still there. Every life, after the ups and downs The best test of live, to life, survival and continuation, do not stop the struggle in the joys and sorrows of life on the road, so that different soul to bear life beat, acceptance of suffering. 19, indifferent to heart, calmly in table, elegant and comfortable life, do not take what is so important. The pursuit will be disappointed; to be alive, you will have trouble. Life is the most afraid of what all want to care about, but also what all grasp is not firm, without scenery, separated populations, such as not to desire, all docked in the fate of the end. Why is too rigid, the natural, to go stay not to live, let go of obsession, revel is 20, if the fate of the broken Hopes of sailing, please don't despair, the coast is still, if the fate of the withered petals of the beautiful, please do not sink, the spring is still, life will always be endless trouble, please don't helpless, because they are still alive, is still a dream, the sun still, we still. Lost, keep memories; to get, must work to; but the most important is good to cherish their own. 21, life, select the complex, is to choose the pain; choose a simple, is choose to be happy. The complex world like aSignificance of pride. Hope is the ornate palace, outside people admiring the magnificent, living in the deep knowledge of living it to pay the price. Simple world as a simple log cabin outside ridiculed shabby, the heart is willing to go live to know the joy. Suffering and joy is their own choice. 22, learn how to use a single powerful heart, let the past be the past, let the future come. Life is really the end of the end of an eagle is flying wings, life is constantly pursuit. Don't miss to regret, don't wait for old just miss. Time to return, seize every moment, again painstakingly again tired also Those struggling to fly. 23, life could not Yimapingchuan, even flat pavement, inevitably there will be a few pieces of roadblocks. Some of the rocks around the past, while others have to move it out. Just move others put the stone is very easy, because the stone from the appearance we can discern; difficult to myself to move away the heart of stone head. Leave time to spend with her, often reflect my heart, so as to remove your heart of stone. 24, everything does not have to be demanding, come to, everything does not have to care about, over the past; failing to do not frown, lau