高支模满堂脚手架专项施工方案.doc

【精品文档】如有侵权，请联系网站删除，仅供学习与交流高支模满堂脚手架专项施工方案.精品文档.一、编制依据：1、现场施工的条件和要求2、结构施工图纸3、建筑施工模板安全技术规范（JGJ162-2008）4、混凝土结构设计规范(GB50010-2002)5、建筑施工扣件式钢管脚手架安全技术规范(JGJ130-2001)6、建筑施工手册第四版二、工程概况XX生产科研综合楼位于武汉市武昌区杨园和平大道745号，长江二桥南岸。总建筑面积约54650m2，总用地面积9959.6m2，其中地下15602m2，地上39048m2。地下2层，地上24层，局部25层。本工程在轴/轴入口大厅 ，支撑高度为14.4m；另外在轴/轴，2 /C轴/轴，支撑高度为10.6m；DG轴/12轴，支撑高度为9.6m。共计4处，支撑高度均大于8米，支撑体系为高支模项目。三、施工方案高支模采用扣件式满堂钢管脚手架，使用48mm、壁厚3.5mm钢管,立杆采用4m,6m钢管，纵横水平杆采用6m钢管，剪刀撑采用6m钢管。 1、施工流程：场地清理弹立杆定位轴线排放纵向扫地杆竖立杆将纵向扫地杆与立杆连接安装横向扫地杆安装纵向水平杆安装横向水平杆安装剪刀撑安装连接件绑扎水平安全网 2、脚手架的设置： 、脚手架立杆纵横距为0.9m，其中600×800mm梁纵距为0.9m,横向间距为0.3m，竖向支撑采用单立杆，并用对接扣件相互错开对接，且不能在同一步距内，下端第一杆采用4m杆和6m杆相互错开。 、纵横水平杆采用6m钢管，纵横向间距均为0.9m, 600×800mm梁纵距为0.9m, 梁底横向间距为0.3m连续设置，步距均为1.5m。 、剪刀撑四边与中间每隔4m设置一道竖向剪刀撑，由底到顶连续设置，满堂脚手架两端与中间每隔5m设置一道水平剪刀撑。 、连墙件采用4.5m钢管，连墙杆( 钢管) 拉结预埋在砼结构梁内的短钢管上，采用扣件连接的方式，或是连接在框架柱上，连墙杆内外两个受力方向均采用不少于两个直角扣件固定。连墙件水平方向不大于4.5m，高度每4.8m 设置一道。 3、脚手架的搭设、立杆施工要求（1）立杆设置前要用墨斗线弹出立杆位置线，并在位置线处设置立杆。（2）立杆接长严禁搭接，必须采用对接扣件连接，相邻两立杆的对接接头不得在同步内，且对接接头沿竖向错开距离不小于500mm,各接头中心距主节点不大于步跨的1/3。（3）严禁将上段立杆与下段立杆错开固定在水平杆上，立杆的垂直偏差不大于架高的1/300。（4）、严禁使用不合格、锈蚀、和有裂纹的扣件。、水平杆施工要求 纵横水平钢管水平方向间距与立杆间距相同，在保证扫地杆，顶端水平杆距楼板、梁为900mm,步距为不大于1.5m。 （1）脚手架底座上不大于200mm处的立杆上必须设置纵、横向扫地杆，横向水平杆设于纵向杆之下，纵向水平杆固定在立杆的内侧，并采用直角扣件与立杆扣紧。 （2）纵横向水平杆接长一般采用对接扣件连接，相邻纵向水平杆对接接头应交错布置，不应设在同步、同跨内，相邻接头水平距离不应小于500mm。 （3）每一主节点处必须设置一根横向水平杆，并采用直角扣件扣紧在纵向水平杆上，该杆轴线偏离主节点的距离不应大于150mm。 （4）水平杆必须扣接在立杆上，不得相互扣接。扣件螺帽一定要拧紧，立杆竖接和水平杆横接一定要采用对接扣件，保证竖向传力和水平观感。、剪刀撑的设置要求 （1）每道剪刀撑宽度不应小于4跨,其宽度为46m,连续布置，斜杆应用旋转扣件固定在与之相交的横向水平杆或立杆上，旋转扣件中心线至主节点的距离不得大于150mm。剪刀撑杆件的底端应与地面顶紧，夹角为45º60º之间。 （2）满堂脚手架应在同一立面处按相应间距连续设置剪刀撑（3）剪刀撑斜杆的接头采用搭接方式，搭接长度不应小于1000mm,并采用三个旋转部扣件分别在离杆端不小于100mm处和搭接中段固定。、扣件要求：（1）扣件式钢管脚手架主要由直角扣件、旋转扣件、对接扣件连接，直角扣件用于两根呈垂直交叉钢管的连接，旋转扣件用于两根呈任意角度交叉钢管的连接，对接扣件用于两根钢管的对接连接，承载力直接传递到结构板上。（2）扣件与钢管的接触面要保证严密，确保扣件与钢管连接紧固。 （3）扣件和钢管的质量要合格，满足施工要求，对发现脆裂、变形、滑丝的严禁使用。 、连墙件连墙件：与墙柱连接，竖向间距4.8m，水平间距4.5m，采用单杆箍式与双排箍柱式，用适长的横向平杆和短钢管各2根抱紧柱子固定或是预埋短钢管上。、安全网安全网采用10cm×10cm的安全网，在支撑体系上设置一道水平安全网。4、脚手架的拆除、拆除前应报审批准，进行必要的安全技术交底后方可进行拆除。周围设围栏或警戒标识，划出工作禁区，禁止非拆卸人员进入，并设专人看管。拆除时，班组成员要明确分工，统一指挥，操作过程中精力要集中，不得东张西望和开玩笑，工具不用时要放入工具袋内。 、严格遵守拆除顺序，拆除顺序应从上而下，一步一清，不允许上下同时作业，本着先搭后拆，按层次由上而下进行，脚手架逐层拆除。 、拆除脚手架的大横杆、剪刀撑，应先拆中间扣，再拆两头扣，由中间操作人往下顺钢管，不得往下乱扔；拆除的脚手架杆、模板、扣件等材料应由专人传递或用绳索吊下，不得往下投扔，以免伤人和不必要的损失。、拆除过程中最好不要中途换人，如必须换人时，应将拆除情况交代清楚；拆除过程中最好不要中断，如确需中断应将拆除部分处理清楚告一段落，并检查是否会倒塌，确认安全后方可停歇。 、拆下来的钢管、模板、扣件要分类堆放，进行保养，检修。 5、脚手架的安全防范措施：。、作业中，禁止随意拆除脚手架的构架杆件、整体性构建、连接紧固件。却因操作要求需要临时拆除时，必须经主管人员同意，采取相应弥补措施，并在作业完毕后及时予以恢复。、人在架设作业时，应注意自我安全保护和他人的安全，避免发生碰撞、闪失和落物，严禁在架杆上等不安全处休息。、每班工人上架工作时，应现行检查有无影响安全作业的问题，在排除和能解决后方可开始作业。在作业中发现有不安全的情况和迹象时，应立即停止作业进行检查，直到安全后方可正常作业。 四、高支模满堂脚手架的设计验算轴/轴入口大厅,支撑高度为14.4m；另外在轴/轴，2 /C轴/轴，支撑高度为10.6m；轴/轴，支撑高度为9.6m,经比较在轴/轴入口大厅的梁最大,板110mm, 为KL4-5(2) 截面尺寸600×800mm作为梁模板支撑满堂架计算对象，立杆纵为0.9m横向间距取0.3m，纵横水平杆步距均为1.5m。选取板厚为110mm楼板作为计算对象,立杆纵、横向间距取0.9m，纵横水平杆步距均为1.5m。 计算参数为：使用48mm、壁厚3.5mm钢管,立杆截面积A=489mm2，立杆回转半径经计算为i=158mm，截面惯性矩I=1.219×106mm4，弹性模量E=2.06×105N/mm2，截面模量W=5080mm3,钢管抗压强度设计值:f=0.205kN/mm2荷载计算参数：模板与木方自重：0.35 kN/mm2混凝土与钢筋自重：25 kN/mm2倒混凝土荷载标准值：1.0 kN/mm2施工均布荷载标准值：1.0 kN/mm2竹串板脚手板标准值：0.35 kN/mm2安全网标准值：0.2 kN/m2 钢管自重: 3.84 kg/m 直角扣件重量：1.32kg/个 对接扣件自重：1.84kg/个 旋转扣件自重：1.46kg/个1、KL4-5(2) 600×800mm计算 ，取0.9m×0.3m水平投影面积为一个计算单元，立杆取最底一步立杆底端为计算截面。、荷载计算模板与木方自重：0.9×0.3+（0.8-0.11）×0.3×2×0.35=0.239KN 混凝土与钢筋自重：0.11×0.9×0.3+（0.8-0.11）×0.3×0.6×25=3.85 KN脚手板自重:0.35×0.9×0.3=0.095KN安全平网自重: 0.2×0.9×0.3×2=0.108 KN纵横水平杆自重：（0.9+0.3）×2×9×3.84×9.8/1000=0.813 KN 直角扣件自重 ： 13.2×9/1000=0.118KN 对接扣件自重： 18.4×2/1000=0.037 KN 旋转扣件自重： 14.6×6/1000=0.087 KN NG=5.347 KN 施工活荷载： 0.9×0.3×2=0.54KN NQ=0.54 KN根据本工程实际情况及规范规定，可不考虑组合风荷载。立杆的轴向力设计值：N= 1.2NG+ 1.4NQ =1.2×5.347+1.4×0.54=7.172KN 、验算长细比查建筑施工扣件式钢管脚手架安全技术规范（JGJ130-2001，2002版）（以下简称为脚手架规范参照JGJ130-2001立杆计算长度：l0=khK-计算长度附加系数 ，其值取1.155 -考虑到脚手架整体稳定因素的单立杆计算长度系数，按脚手架规范表5.3.3采用 h-立杆步距l0=1.155×1.7×1.5=2.94 mi =1.58cm= l0/ i=2.94/1.58=186210满足要求查脚手架规范附录C的稳定系数 =0.207、立杆的稳定性计算:立杆的稳定性计算公式 =N/Af 其中 N - 立杆的轴心压力设计值(kN) ：N = 7.172 kN； - 轴心受压立杆的稳定系数,由长细比 l0/i 查表得到； i - 计算立杆的截面回转半径(cm) ：i = 1.58 cm； A - 立杆净截面面积(mm2)：A = 489 mm2； W - 立杆净截面模量(抵抗矩)(cm3)：W=5.08 cm3； - 钢管立杆受压应力计算值 (N/mm2)； f- 钢管立杆抗压强度设计值 ：f =205 N/mm2； l0- 计算长度 (m)；钢管立杆受压应力计算值；=7172/(0.207×489) = 70.85N/mm2；立杆稳定性计算 = 70.85 N/mm2 < f= 205 N/mm2 满足要求2、轴/入口大厅(14.35m)110mm厚楼板计算, 取0.9m×0.9m水平投影面积为一个计算单元，立杆取最底一步立杆底端为计算截面。、荷载计算模板与木方自重：0.9×0.9×0.35=0.283KN 混凝土与钢筋自重：(0.11×0.9×0.9)×25=2.23 KN脚手板自重0.9×0.9×0.35=0.283KN安全平网自重: 0.2×0.9×0.9×2=0.324 KN纵横水平杆自重：（0.9+0.9）×2×9×3.84×9.8/1000=1.22 KN 直角扣件自重 ： 13.2×9/1000=0.118KN 对接扣件自重： 18.4×2/1000=0.037 KN 旋转扣件自重： 14.6×6/1000=0.087 KN NG=4.58 KN 施工活荷载： 0.9×0.9×2=1.62KN NQ=1.62 KN根据本工程实际情况及规范规定，可不考虑组合风荷载。立杆的轴向力设计值：N= 1.2NG+ 1.4NQ =1.2×4.58+1.4×1.62=7.764KN 、验算长细比查建筑施工扣件式钢管脚手架安全技术规范（JGJ130-2001，2002版）（以下简称为脚手架规范参照JGJ130-2001立杆计算长度：l0=khK-计算长度附加系数 ，其值取1.155 -考虑到脚手架整体稳定因素的单立杆计算长度系数，按脚手架规范表5.3.3采用 h-立杆步距l0=1.155×1.7×1.5=2.94 mi =1.58cm= l0/ i=2.94/1.58=186210满足要求查脚手架规范附录C的稳定系数 =0.207、立杆的稳定性计算:立杆的稳定性计算公式 =N/Af 其中 N - 立杆的轴心压力设计值(kN) ：N = 7.764 kN； - 轴心受压立杆的稳定系数,由长细比 l0/i 查表得到； i - 计算立杆的截面回转半径(cm) ：i = 1.58 cm； A - 立杆净截面面积(mm2)：A = 489 mm2； W - 立杆净截面模量(抵抗矩)(cm3)：W=5.08 cm3； - 钢管立杆受压应力计算值 (N/mm2)； f- 钢管立杆抗压强度设计值 ：f =205 N/mm2； L0- 计算长度 (m)；钢管立杆受压应力计算值；=7764/(0.207×489) = 76.7N/mm2；立杆稳定性计算 = 76.7 N/mm2 < f= 205 N/mm2 满足要求 、立杆在地下室顶板承载力计算 由于立杆是立在地下室一层梁板上，所以选取地下一层（-0.05m）轴/3.35m宽,厚180mm板作为计算对象验算楼板强度时按照最不利考虑,楼板的跨度取3.35m，楼板承受的荷载按照线均布考虑。 宽度范围内配筋上下配置两层二级钢筋，配筋面积As=678.24mm2，fy=300.0N/mm2。 板的截面尺寸为 b×h=3350mm×180mm，截面有效高度 h0=160mm。楼板所承受的荷载是由立杆传递下来的 其均布荷载为：q=3.35×7.764/0.9×0.9=32.1 kN/m板带所需承载的最大弯矩按照四边固接双向板计算 Mmax=0.0416×ql2=0.0416×32.1×3.352=14.98 kN.m则可以得到矩形截面相对受压区高度:b= Asfy/bh0fcm =678.24×300/3350×160×19.1 =0.0198验算楼板混凝土强度达到100%时，承受的荷载：M=a1fcmb(ho-x/2)+fyAs(h0-as) =1×19.1×3350×156.8+300×678.24×140 =38.51kN.m M Mmax,满足要求M-弯矩设计值 a1-系数，按混凝土结构设计规范(GB50010-2002)第7.1.3条的规定计算 fcm-混凝土轴心抗压强度设计值按本规范表4.1.4采用 ，fcm=19.1N/mm2As-受压区纵向普通钢筋的截面面积 b-矩形截面的宽度h0-截面有效高度 x-界限受压区高度 , x=b h0所以楼板强度可以承受大厅板、梁传递下来的荷载,其他三处高支模搭设与入口大厅相同.（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