东郊农场保障房E地块项E5、E7 住宅楼 项目顶板施工方案.doc

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1、【精品文档】如有侵权，请联系网站删除，仅供学习与交流东郊农场保障房E地块项E5、E7 住宅楼 项目顶板施工方案.精品文档.目录1、编制依据.12、工程概况.1 2.1设计概况. 23、早拆模板工艺原理.24、施工准备.3 4.1现场及技术准备.3 4.2施工方案.4 4.3材料准备.55、主要施工方法及措施5 5.1模板支架搭设与拆除.7 5.2检查与验收.7 5.3支撑体系的选择及模板配置.8 5.4安全管理与维护106、计算书101、编制依据序号名称编号1东郊农场保障房E地块项E5#、E7#楼项目施工图2东郊农场保障房E地块项E5#、E7#楼项目施工组织设计3混凝土结构工程施工质量验收规范

2、GB50204-20114北京市建筑工程施工安全操作规程DBJ01-62-20025建设工程安全生产管理条例6建筑施工手册第四版（缩印本）7建筑施工扣件式钢管脚手架安全技术规范JGJ130-20118国家、部、省、有关工程建设的法律、法规9建筑工程施工质量验收统一标准GB50300-200110模板早拆施工技术规程DB11/694-20092、工程概况2.1设计概况项目名称东郊农场保障房E地块项目E5#、E7#楼单层面积地下二/地下一565/572标准层571层 数地 下2层地 上（E7#/E5#楼）24/28层层 高地下3.35m 、3.0m标准层2.7m结 构 类 型框架、剪力墙结构顶板厚

3、度地下（E7#/E5#楼）180mm、160mm/180mm地上150mm3、早拆模板工艺原理国家标准混凝土结构工程施工及验收规范GB502042011规定，现浇结构的模板及其支架拆除时的混凝土强度应符合设计及规范要求；如板底模、模板跨度2.0m时，混凝土强度达到设计强度的50时方可拆模；跨度在2.0m8.0m时，混凝土强度达到设计强度的75时方可拆模；对于梁，拱壳跨度8.0m时，混凝土强度达到设计强度的75、跨度大于8.0m时，混凝土强度达到设计强度的100时方可拆模。这就说明，结构梁、板跨度的大小，对结构梁、板的内应力大小有直接的影响。为此，如果将梁、板和拱的跨度减小，其结构内应力亦相应减

4、小，则拆模时混凝土强度可以降低，再根据混凝土早期强度增长快的规律，拆模时间可以提前。模板早拆施工技术的基本原理就是在施工阶段把结构跨度人为的划小，降低其内力，使模板能够早拆，而结构的安全度又不受影响，以达到模板早拆应有的经济效益及社会效益。4、施工准备4.1现场及技术准备4.1.1支模前，应按照要求编制专项施工方案，并应经审核批准后方可实施。施工方案的相关要求对施工单位项目部及使用工人进行安全、质量、技术交底、对设计图纸要了解。4.1.2应清除搭设场地内杂物，平整搭设场地，并使排水畅通。4.1.3 应对进入施工现场的钢管支架及构配件进行验收，使用前应对其外观进行检查，并应核验其检验报告以及出厂

5、合格证，严禁使用不合格的产品。4.1.4经验收合格的构配件应按品种、规格分类码放，并标挂数量规格铭牌备用。构配件堆放场地排水应畅通，无积水。4.1.5配齐施工工具，如榔头、钢卷尺、扳手等。4.2施工方案设计说明4.2.1架体结构设计和计算应按下列步骤进行：1）制定架体方案；2）荷载计算及架体验算。架体验算应包括架体杆件稳定性、刚度验算，龙骨的抗弯强度和刚性验算。 3）绘制架体结构整体布置的平面图、立面图、剖面图。模板支架还应绘制支架顶部梁、板模板支架节点构造详图及支撑架与已建结构的拉结或水平支撑构造详图。4.2.2模板支撑架应说明施工流水步骤、混凝土浇筑程序及方法；4.2.3应明确架体主要构、

6、配件及材质要求，编制构、配件用料表及供应计划；4.2.5 应说明架体搭设、适用和拆除方法；4.2.6 应制定保证质量安全的技术措施。4.3材料准备按早拆方案当中的材料计划表（附后）的材料名称、规格、数量，根据施工计划安排进场。5、主要施工方法及措施5.1模板支架搭设与拆除5.1.1模板支架立杆搭设位置应按专项施工方案放线确定，不得任意搭设。5.1.2模板支架水平方向搭设，首先应根据方案设计立杆位置布置，将水平杆插在在立杆的插座上形成基本的架体单元，并以此向外扩展搭设成整体支撑体系。垂直方向应搭完一层以后再搭设次层，以此类推。5.1.3立杆和顶杆应通过立杆连接套管连接，水平杆插入立杆插座后，应采

7、用榔头敲紧，注意两头同时均匀敲击，不能猛敲一头后再敲另一头，保证水平杆与立杆连接可靠。5.1.4每搭完一步支模架后，应及时校正水平杆步距，立杆的纵、横距，立杆的垂直偏差与水平杆的水平偏差。控制立杆的垂直偏差不应大于H/500，且不得大于50mm。5.1.5安放早拆柱头（托架就位）或U托（早拆柱头插销一定要到位，不能一头支撑，另一头空支）；5.1.6安放龙骨并调平到所需标高，5.1.7根据设计方案铺设模板（从一侧向另一侧，或从中间向两侧铺设模板时，柱头板标高随铺设随调平，千万不能模板铺设完后再调标高，柱头板与顶板间不得留有空隙）；5.1.8模板支架搭设应与模板施工相配合，可利用可调U托或早拆头调

8、整底模标高。5.1.9建筑楼板多层连续施工时，应保证上下层支撑立杆在同一轴线上。5.1.10支架搭设完成后混凝土浇筑前应由项目技术负责人组织相关人员进行验收，符合专项施工方案后方可浇筑混凝土。5.1.11模板、钢楞拆除要具备一定条件，一是混凝土强度达到设计强度的50%（同条件试块试压数据）；其次是上一层墙、柱模板（尤其是大模板）已拆除并运走后，才能拆除其模板、钢楞、横杆及保留以外的部件同步拆除并从通风道或外脚手架上到上一层。混凝土厚度较大时，不易做早拆方案时，混凝土强度要求达到75% 以上，梁底和悬挑构件必须达到100%方可拆除。5.1.12 架体拆除时应按施工方案设计的拆除顺序进行。拆除作业

9、必须按先搭后拆，后搭先拆的原则，从顶层开始，逐层向下进行，严禁上下层同时拆除。拆除时的构配件应成捆吊运或人工传递至地面，严禁抛掷。5.1.13要从一侧或一端按顺序轻轻敲击早拆柱头插销，使模板、钢楞降落一定高度，而后可将模板、钢楞及保留以外的杆部件同步拆除并从通风道或外脚手架上运到上一层。5.1.14拆除横杆时，一定要均匀敲击两头，两头同时抬出，不可猛击一头。5.1.15保留的立杆、横杆及早拆柱头，待支撑达到拆模强度时再拆除，拆除后，从楼梯通道隔2层或3层（冬施期间）运到正在支模施工层。5.1.16保留的立杆必须是稳定体。5.1.17 分段、分立面拆除时，应确定分界处的技术处理方案，保证分段后临

10、时结构的稳定。5.1.18拆模强度要求：构件类型构件跨度（m）达到设计强度的百分率（%）板2502，8758100梁8758100悬臂构件1005.1.19现浇钢筋混凝土结构施工安全计算式中：Cx拆模时混凝土强度值（N/mm2），Cx=3050%=15.0N/mm2 h楼板厚度（m），按最大的厚度计算取h=0.18mL支撑柱间距（早拆支撑跨度）（m） 取支撑最大间距L=1.4m 5.2检查与验收5.2.1进入现场的构配件应对管径、构件壁厚等抽样核查，还应进行外观检查，外观质量应符合本规程相关规定.5.2.2模板支架应按以下分阶段进行检查和验收：1）基础完工后及模板支架搭设前；2）超过8m的高支

11、模架搭设至一半高度后；3）达到设计高度后应进行全面的检查和验收；4）遇6级以上大风、大雨、大雪后特殊情况的检查；5）停工超过一个月恢复使用前。5.2.3模板支架应由工程项目技术负责人组织模板支架设计及管理人员进行检查，对模板支架应重点检查以下内容：1）模板支架应按施工方案及本规程相应的基本构造要求搭设；2）可调U托及及早拆头伸出水平杆的悬臂长度必须符合设计限定要求；3）横杆插入立杆插座应敲紧；4）立杆基础应符合要求，立杆与基础间有无松动或悬空现象。5.2.4搭设的施工记录和质量检查记录应及时、齐全。5.3支撑体系的选择及模板配置根据本工程楼层特点顶板支撑体系使用承插式早拆体系，顶板采用15mm

12、厚的多层板，主次龙骨采用方钢管。按照早拆原理对顶板支撑所需材料数量的配置为满配一层，即满配一层横杆、立杆、早拆头、油托、主次龙骨和模板，地下层高分别为3.000 m、3.350m标准层高2.700m，顶板厚度分别为：180mm、160mm、150mm，支撑净空分别为：2.820m、3.080m、3.100m、2.550m，因此支撑竖向由一根2100mm立杆（净空2.820m、3.080m、3.100m需分别加600mm、300mm、300mm）加上一个400mm的早拆柱头(可调范围350550mm之间)或600mmU型托架即能满足支撑高度要求。一个根据平面尺寸布置，支撑立杆间距一般取标准140

13、0mm、1000mm，其它尺寸作为补充：1200mm、700mm、500mm。具体材料用量见房间布置图和材料配置表。表示为先拆立柱和U托或早拆托架。 表示为后拆立柱和早拆柱头。5.4安全管理与维护5.4.1工人须经三级安全教育，考试合格后方可上岗。5.4.2支架搭设作业人员必须正确戴安全帽、系安全带、穿防滑鞋。5.4.3.应控制模板支架混凝土浇筑作业层上的施工荷载，集中堆载不应超过设计值。5.4.4混凝土浇筑过程中，应派专人观测模板支架的工作状态，发生异常时观测人员应及时报告施工负责人，情况紧急时应迅速撤离施工人员，并应进行相应加固处理。5.4.5模板支架使用期间，严禁擅自拆除架体结构杆件，如

14、需拆除必须报请工程项目技术负责人以及总监理工程师同意，确定防控措施后方可实施。5.4.6严禁在模板支架及脚手架基础及邻近处进行挖掘作业。5.4.7模板支架及脚手架应与架空输线电路保持安全距离，工地临时用电线路架设及脚手架接地防雷击措施等应按现行行业标准施工现场临时用电安全技术规程JGJ46的有关规定执行。5.4.8装拆模板，必须有稳固的登高设备。高度超过2米时，必须搭设脚手架。安装梁模板及梁、柱接头模板的支撑架或操作平台必须支搭牢固。5.4.9模板的预留孔洞、电梯井口等处，应加设防护网，防止人员或物体坠落。5.4.10在脚手架或操作台上堆放模板时，应按规定码放平稳，防止脱落并不得超载。操作工具

15、及模板连接件要随手放入工具袋内，严禁放在脚手架或操作台上。5.4.11支模必须按照工序进行，模板没有固定前，不得进行下道工序。禁止利用拉杆、支撑攀登上下。5.4.12浇筑砼时，应设专人看护模板，如发现模板倾斜、位移、局部鼓胀时，应及时采取紧固措施，方可继续施工。5.4.13模板拆除后，禁止在楼板上集中堆放材料，材料应分散放置。5.4.14顶板拆模时，应逐块拆卸。拆下的模板，严禁向下抛掷。如有间歇，亦应将已拆下的模板的配件及时运走，防止坠落伤人。5.4.15施工中严禁吸烟，严禁酒后作业，不许在支撑体系上追逐打闹。5.4.16顶板模板支撑的立杆和拉杆以及主次龙骨的布置必须严格符合方案要求，严禁少支

16、、漏支。5.4.17不要用力过猛，拆下来的材料要及时运走，整理拆下后的模板及时启出钉子并清理干净，按规格分类堆放整齐。6、计算书东郊农场保障房E地块项E5、E7#住宅楼，选择最大板厚180mm进行计算，次龙骨采用50701.8的钢木龙骨，中心间距250mm；主龙骨采用50703方钢管；竖向支撑采用承插式早拆架；立柱最大间距10001400mm。验算次龙骨、主龙骨的强度、刚度及立柱稳定性验算是否满足要求？1、材料和力学性能 C形钢木龙骨力学性能（次龙骨）钢材的弹性模量取值为E=2.0610 5 N/mm2Q235钢材的抗弯强度设计值fm=205N/mm2根据结构静力计算表：截面抵抗拒W=1/6H

17、（BH3-bh3）=8.5cm3惯性矩I= BH3- bh3/12=（573-4.646.643）/12=29.72cm4矩形钢管力学性能（主龙骨）钢材的弹性模量取值为E=2.0610 5 N/mm2Q235钢材的抗弯强度设计值fm=205N/mm2根据结构静力计算表：截面抵抗拒W=1/6H（BH3-bh3）=13.37cm3惯性矩I= BH3- bh3/12=（573-4.46.43）/12=46.8cm42、次龙骨验算（50701.8木龙骨）作用于模板支架的荷载包括永久荷载和可变荷载。1）静荷载标准值包括以下内容模板的自重(kN)：NG1 = 0.30kN钢筋混凝土楼板自重(kN)：NG2

18、 = (24+1.1)0.18 = 4.52N；经计算得到，永久荷载标准值 NG = NG1+NG2 = 4.82kN；2）可变荷载为施工荷载标准值施工人员及设备可变荷载标准值取值： NQ1 = 3 kN；经计算得到，可变荷载标准值NQ= 31.4=4.2 kN；3）不考虑风荷载时,荷载组合为：N = 1.2NG + 1.4NQ =9.08 kN；2.1次龙骨计算简图为2.2次龙骨抗弯强度验算计算次龙骨抗弯强度时时，可按三跨连续梁均布荷载计算。M= 0.10qL2c=M/Wfm 次龙骨间距为中到中250mm，作用在每根次龙骨上的均布荷载为：q=9.08 kN0.25=2.27kN/m最大弯矩M

19、=0.10qL2=0.12.2714002=0.445kN.m；=M/W=0.445106/8.5103=52.34N/mm2fm=205 N/mm2；2.3次龙骨挠度验算刚度验算采用标准荷载，不考虑可变荷载作用： q=4.88 kN0.25=1.22KN/m=0.677ql4/100EI=0.6771.2214004/ (1002.0610529.72104）=0.52mm =l/500=2.0mm 3、主龙骨验算（50703）3.1主龙骨计算简图3.2主龙骨抗弯强度验算 计算主龙骨时按照集中荷载下的三跨连续梁计算：M=0.267plz=M/Wfm集中荷载P取纵向板底支撑传递力，p=9.08

20、0.251.0=2.27KN/mM= 0.267pl=0.2672.271.00.61kNmz= M/W0.61106/13.37103=45.6fm=205 N/ mm2 3.3主龙骨挠度验算刚度验算采用标准荷载，不考虑可变荷载作用：则p=4.880.25=1.22KN/m=1.883pl3/100EI=1.8831.2210003/1002.0610546.8104=0.24mml/500=2mm 4、立杆稳定性验算立杆的稳定性计算公式: =N/(A)f其中 N - 立杆的轴心压力设计值(kN) ：N =12.71kN； - 轴心受压立杆的稳定系数,由长细比 lo/i 查表得到； i -

21、计算立杆的截面回转半径(cm) ：i = 1.59 cm； A - 立杆净截面面积(cm2)：A = 4.24 cm2； W - 立杆净截面模量(抵抗矩)(cm3)：W=4.49 cm3；-钢管立杆最大应力计算值 (N/mm2)；f- 钢管立杆抗压强度设计值 ：f =205 N/mm2； L0- 计算长度 (m)；按下式计算:l0 = h+2a = 1.5+0.42 = 2.3 m；a - 立杆上端伸出顶层横杆中心线至模板支撑点的长度；a = 0.4 m；l0/i = 2300/ 15.9 =144.7 ；由长细比 Lo/i的结果查冷弯薄壁型钢结构技术规程得到轴心受压立杆的稳定系数= 0.33

22、2 ；见表A1.1-1钢管立杆的最大应力计算值 ；=12.71103/(0.332424) = 90.3N/mm2f = 205 N/mm2，满足要求！如果考虑到高支撑架的安全因素，建议按下式计算l0 = k1k2(h+2a)= 1.1671.0(1.5+0.42) = 2.67m；k1 - 计算长度附加系数按照表1取值1.167；k2 - 计算长度附加系数，h+2a = 2.3 按照表2取值1.0 ；Lo/i =2.67103/15.9 = 167.92；由长细比 Lo/i的结果查冷弯薄壁型钢结构技术规程得到轴心受压立杆的稳定系数=0.253；见表A1.1-1钢管立杆的最大应力计算值 =12

23、.71103/(0.253424) = 118.6N/mm2 f = 205 N/mm2，满足要求！以上表参照扣件式钢管模板高支撑架设计和使用安全。结论：混凝土板厚180mm，立杆间距1.01.4 m；次龙骨250间距；单主龙骨；满足荷载要求。同样计算混凝土板厚160mm，立杆间距1.01.4 m；次龙骨250间距；单主龙骨；满足荷载要求。混凝土板厚150mm，立杆间距1.01.4 m；次龙骨250间距；单主龙骨；满足荷载要求。（英文版 ） easily blame, to prevent the broken window effect. Supervise the leading cadr

24、es to play an exemplary role, take the lead in the strict implementation of the and , 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 a

25、nd 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 supervis

26、ion, discipline inspection and supervision of cadres to set an example for compliance with the and 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 strict

27、ly, 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

28、 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

29、 real strict, so loyal, clean, play. To be good at learning, the Constitution and the 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 ideolo

30、gical 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

31、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 prec

32、ipitation, 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 ans

33、wers; 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 desir

34、e, 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 ignora

35、nce, 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 trou

36、ble and worry, completely depends on how we look at and deal with it. Dont always take everything back to things, and dont get into a blind alley, dont want to face, dont 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 afra

37、id 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, Im afraid he turned to it as a joke to tell dont 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 f

38、ind 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

39、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,Eac

40、h 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 mo

41、st difficult to open ones 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 dont envy who. Like a person is a kind of feeling, not like a person is true. The truth is

42、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

43、 to comfort, but never know your heart is how wanjianchuanxin. 12, maam, 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, dont envy him A sum of, d

44、ont 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 m

45、any people and you are, you cannot change also cant 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 t