闸阀井(混凝土)施工方案.doc

1、choose the correct meaning; (4) to correct the typos; (5) so the child write words (ABAB, and AABB); (6) in accordance with written words; (7) the complete word, and explain the meaning of the word; (8) collocation; (9) make sentences with the word; (10) the written language as required. (C) the mai

2、n sentence types (1) complete sentences; (2) write down the meaning of a sentence or expression of thoughts and feelings; (3) write sentences as required; (4) finish malalignment of the sentence; (5) modified sentences. 2, knowledge classification (1) the common conjunctions coordinate: . . 一面 . 1,

3、to examine the topic, identify problems associated with two 2, analysis, alternative question two is in direct proportion to the amount of the associated relationship is inversely proportional relationship. 3, and set unknown, column proportion type 4, and solutions proportion type 5, and test, wrot

4、e answer language plenary, and subject: application problem (1)-simple application problem and composite application problem review content simple application problem composite application problem answers application problem of general steps 1, and figure out meaning-through examines the, find known

5、 conditions and by seeking problem 2, and analysis number relationship-analysis known conditions Zhijian, and conditions and problem Zhijian of relationship, determine problem-solving method and problem-solving steps. 3, and column type calculation-lists formula, is out subdivisions 4, and test, and

6、 wrote answer-check, and checking, and wrote answers typical application problem 13, and subject: application problem (3)-column equation solutions application problem review content overview problem-solving steps 1, and figure out meaning, find by seeking of unknown and x said 2, and according to m

7、eaning find equivalent relationship, lists Equation 3, and solutions equation 4, and test, and wrote answers according to meaning find equivalent relationship of common method 1 , And according to common of number relationship type, established equivalent relationship 2, and according to has learn h

8、ad of calculation formula, 3, and according to problem in the of focus described sentence from overall Shang determine basic of equivalent relationship 4, and using segment figure, and list method, method analysis number混凝土阀门井施工方案本工程新建 5 座分流阀门井，尺寸：2m2m2.4m, 4.4m4.6m2.4m，或 2.3m2m2.8m 均采用钢筋混凝土井室，砼材料采用

9、 C30、S6，人孔采用钢筋混凝土盖板，阀门井下阀门设砖支墩支撑。 1.1 施工前准备施工前按设计要求放样，放出井位中心点和浇筑位置，并复核基础面高程、平面尺寸是否符合要求。 1.2 钢筋工程（1）进场钢筋符合设计和规范要求。用于工程的钢筋无节疤，不弯曲和没有其它破损。钢筋保持清洁，无锈蚀、锈屑、氧化皮、油、泥土、油漆、混凝土垢及任何可能影响混凝土与钢筋间结合的其它材料。堆放钢筋的场地上方要遮盖，钢筋放在木板和支墩上，离地净距大于 15cm。（2）保持钢筋保护层的垫块用与现浇混凝土同等强度、颜色和配合比的混凝土制成。（3）钢筋的安放要求确保位置正确并牢固地固定，保护钢筋位置的支托为同等钢筋或相

10、适应的其他钢制品。绑扎钢筋的金属丝为 2022#的软铁丝，所有钢筋的交叉处均用软铁丝扎牢，其端头弯入混凝土中。（4）施工中先将直钢筋切割到要求的长度，由经验丰富的钢筋工进行冷弯。严格按施工规范的相关规定进行钢筋的切割、冷弯。（5）按钢筋焊接及验收规范的规定要求，进行钢筋焊接作业。（6）无论是在混凝土浇筑之前或以后都不得将已绑扎的钢筋弯曲或拉直。加工钢筋的允许误差见下表。钢筋加工序号 项目允许误差 允许误差表1 剪切长度 25mm2 吊筋、拉杆和螺纹钢 13mm3 弯头的位置 25m1.3 模板工程（1）模板采用轻型组合钢模板，采用厂家订购。在混凝土振捣时，模板缝必须达到不漏浆的要求，模板接缝处

11、加设海绵条，海绵条与模板内表面平齐。紧固采用 48 钢管扣件，钢筋混凝土井壁采用对拉螺栓，钢管扣件支撑。（2）根据图纸所示永久工程的真实形状和尺寸测量放样。模板安装做到位置正确、支撑稳定，有足够的支柱撑杆和拉条，并能承受混凝土浇筑及振捣时产choose the correct meaning; (4) to correct the typos; (5) so the child write words (ABAB, and AABB); (6) in accordance with written words; (7) the complete word, and explain the me

12、aning of the word; (8) collocation; (9) make sentences with the word; (10) the written language as required. (C) the main sentence types (1) complete sentences; (2) write down the meaning of a sentence or expression of thoughts and feelings; (3) write sentences as required; (4) finish malalignment o

13、f the sentence; (5) modified sentences. 2, knowledge classification (1) the common conjunctions coordinate: . . 一面 . 1, to examine the topic, identify problems associated with two 2, analysis, alternative question two is in direct proportion to the amount of the associated relationship is inversely

14、proportional relationship. 3, and set unknown, column proportion type 4, and solutions proportion type 5, and test, wrote answer language plenary, and subject: application problem (1)-simple application problem and composite application problem review content simple application problem composite app

15、lication problem answers application problem of general steps 1, and figure out meaning-through examines the, find known conditions and by seeking problem 2, and analysis number relationship-analysis known conditions Zhijian, and conditions and problem Zhijian of relationship, determine problem-solv

16、ing method and problem-solving steps. 3, and column type calculation-lists formula, is out subdivisions 4, and test, and wrote answer-check, and checking, and wrote answers typical application problem 13, and subject: application problem (3)-column equation solutions application problem review conte

17、nt overview problem-solving steps 1, and figure out meaning, find by seeking of unknown and x said 2, and according to meaning find equivalent relationship, lists Equation 3, and solutions equation 4, and test, and wrote answers according to meaning find equivalent relationship of common method 1 ,

18、And according to common of number relationship type, established equivalent relationship 2, and according to has learn had of calculation formula, 3, and according to problem in the of focus described sentence from overall Shang determine basic of equivalent relationship 4, and using segment figure,

19、 and list method, method analysis number2生的侧向压力，并不受气候的影响。立模时，模板要均匀、平直地布置，使接缝处的混凝土表面平整均匀。模板的接缝设计要与结构物的外观相谐调，使竖向和平面的缝均保持平直。模板不得与结构钢筋直接连接，亦不得与施工脚手架连接，以免引起模板的变形、错位。（3）模板内表面涂刷脱模剂，以防止与混凝土的粘结和便于拆模。在进行涂覆操作时，不得污染邻近的混凝土结构或钢筋结构。混凝土在浇筑前，清除模板成型面上的锯末、刨花、灰尘、其他杂务和滞水。（4）按图纸要求的位置和高程将预埋件或预留管固定在模板上。浇筑混凝土前，确定预埋件和预留孔洞的位置

20、和数量与设计图一致，安装牢固。（5）模板拆除时的混凝土强度应符合设计规范的有关要求。已拆除模板和支架的结构，在混凝土强度达到设计混凝土强度等级后，方可承受全部使用荷载。1.4 混凝土工程混凝土采用搅拌站集中拌和，混凝土运输车运输，吊车吊料斗入模，施工要求与注意事项如下：（1）浇筑前，对支架、模板、钢筋和预埋件进行检查，模板内的杂物、积水和钢筋上的污垢清理干净；模板如有缝隙，应填塞严密，模板内面应涂刷脱模剂。（2）浇注前，检查混凝土的均匀性和坍落度。（3）对浇注混凝土使用的脚手架，应便于人员与料具上下，且必须保证安全。（4）混凝土应按一定厚度、顺序和方向分层浇筑，应在下层混凝土初凝或能重塑前浇筑

21、上层混凝土，混凝土分层浇筑厚度不超过 40cm。（5）浇筑混凝土时，采用插入式振捣棒捣固。振捣应符合下列规定：a、使用插入式振动棒时，移动间距不应超过振捣棒作用半径的 1.5 倍；与 侧模应保持 510cm 的距离；插入下层混凝土 510cm；每一处振捣完毕后边振动边徐徐提出振动棒；避免振动棒碰撞模板、钢筋及其他预埋件。b、对每一振动部位，必须振动到该部位混凝土密实为止。密实的标志是混凝土停止下沉、不再有气泡冒出、表面呈现平坦、泛浆。（6）混凝土的浇筑必须连续进行，如因故间断，间断时间应小于前层混凝土的初凝时间或能重塑的时间。允许间断时间应经试验确定，若超过允许间断时间，须采取保证质量措施或按

22、工作缝处理。（7）在混凝土浇筑过程中，应注意观测：a、随时观察所设置的预埋螺栓、预留孔是否移动，若发现移位时应及时校正。b、预留孔的成型设备及时抽拉松动。choose the correct meaning; (4) to correct the typos; (5) so the child write words (ABAB, and AABB); (6) in accordance with written words; (7) the complete word, and explain the meaning of the word; (8) collocation; (9) mak

23、e sentences with the word; (10) the written language as required. (C) the main sentence types (1) complete sentences; (2) write down the meaning of a sentence or expression of thoughts and feelings; (3) write sentences as required; (4) finish malalignment of the sentence; (5) modified sentences. 2,

24、knowledge classification (1) the common conjunctions coordinate: . . 一面 . 1, to examine the topic, identify problems associated with two 2, analysis, alternative question two is in direct proportion to the amount of the associated relationship is inversely proportional relationship. 3, and set unkno

25、wn, column proportion type 4, and solutions proportion type 5, and test, wrote answer language plenary, and subject: application problem (1)-simple application problem and composite application problem review content simple application problem composite application problem answers application proble

26、m of general steps 1, and figure out meaning-through examines the, find known conditions and by seeking problem 2, and analysis number relationship-analysis known conditions Zhijian, and conditions and problem Zhijian of relationship, determine problem-solving method and problem-solving steps. 3, an

27、d column type calculation-lists formula, is out subdivisions 4, and test, and wrote answer-check, and checking, and wrote answers typical application problem 13, and subject: application problem (3)-column equation solutions application problem review content overview problem-solving steps 1, and fi

28、gure out meaning, find by seeking of unknown and x said 2, and according to meaning find equivalent relationship, lists Equation 3, and solutions equation 4, and test, and wrote answers according to meaning find equivalent relationship of common method 1 , And according to common of number relations

29、hip type, established equivalent relationship 2, and according to has learn had of calculation formula, 3, and according to problem in the of focus described sentence from overall Shang determine basic of equivalent relationship 4, and using segment figure, and list method, method analysis number3c、

30、在灌注过程中应注意模板、支架等支撑情况，设专人检查，如有变形，移位或沉陷应立即校正并加固，处理后方可继续浇筑。（8）在浇筑过程中或浇筑完成时，如混凝土表面泌水较多，须在不扰动已浇筑混凝土的条件下，采取措施将水排除。继续浇筑混凝土时，应查明原因，采取措施，减少泌水。（9）混凝土浇筑完成后，对混凝土裸露面应及时进行修整、抹平，定浆后还应第二遍压光或拉毛。（10）混凝土达到一定强度后，要及时洒水养护，天气干燥时还应覆盖养护。1.5 砌体工程砌体所用标准砖须先浇水湿润。在混凝土基础上砌砖时，先清扫凿毛基础，并用水冲刷干净，然后在基础面上铺一层 10mm 厚座浆，再压砖砌筑。砌砖时，严格按一铲灰、一块砖

31、、一揉挤法砌筑，禁止用灌浆法砌筑。实心砌体采用一顺一丁、梅花丁或三顺一丁的砌筑形式。砖砌体的灰缝应横平竖直、厚薄均匀，并填满砂浆。砌体水平灰缝的砂浆饱满度不小于 80%，厚度以 10mm 为准。竖缝采用挤浆或加浆方法，不得出现明缝，严禁用水冲浆灌缝，控制厚度为1012mm。砂浆采用机械拌合，拌合时间不少于 2min，随拌随用，砌筑砂浆采用 M7.5 水泥砂浆，座浆、抹三角灰、流槽抹面均采用 1：2 防水水泥砂浆。水泥砂浆抹面一般分两道抹面，第一道砂浆抹面后，将表面搓成粗糙面或划出纹道。待砂浆收水后抹第二道砂浆，再用木板搓平，最后抹光，保证砂浆密实，光洁美观。阀门井 爬梯按设计图纸要求设置，做到

32、安装牢固、灌浆密实。1.6 阀门井周的回填土（1）、现浇砼水泥砂浆的强度应达到设计规定的强度后方允许回填。严禁与浇注井体同步回填。（2）、井周 50cm 宽范围内的回填材料，均应采用无砂大孔混合料或低标号混凝土,并振捣密实。故本设计在排水阀门井(井室、井室盖板、井筒周边)50CM范围内应全部回填 C15 无砂大孔混合料（配比 425#水泥：石头：水=0.244:1.02:0.05）,并振捣密实。（3）、压实机具：按规范配置的压路机具。特别要配置小型机械如蛙式打夯机和立式冲击夯等。在施工中，优先采用立式冲击夯。（4）、压实工艺：井室周围的回填，应与管道沟槽的回填同时进行，当井室周围的回填与管道沟

33、槽的回填不便同时进行时，应留台阶形接茬。choose the correct meaning; (4) to correct the typos; (5) so the child write words (ABAB, and AABB); (6) in accordance with written words; (7) the complete word, and explain the meaning of the word; (8) collocation; (9) make sentences with the word; (10) the written language as r

34、equired. (C) the main sentence types (1) complete sentences; (2) write down the meaning of a sentence or expression of thoughts and feelings; (3) write sentences as required; (4) finish malalignment of the sentence; (5) modified sentences. 2, knowledge classification (1) the common conjunctions coor

35、dinate: . . 一面 . 1, to examine the topic, identify problems associated with two 2, analysis, alternative question two is in direct proportion to the amount of the associated relationship is inversely proportional relationship. 3, and set unknown, column proportion type 4, and solutions proportion ty

36、pe 5, and test, wrote answer language plenary, and subject: application problem (1)-simple application problem and composite application problem review content simple application problem composite application problem answers application problem of general steps 1, and figure out meaning-through exam

37、ines the, find known conditions and by seeking problem 2, and analysis number relationship-analysis known conditions Zhijian, and conditions and problem Zhijian of relationship, determine problem-solving method and problem-solving steps. 3, and column type calculation-lists formula, is out subdivisi

38、ons 4, and test, and wrote answer-check, and checking, and wrote answers typical application problem 13, and subject: application problem (3)-column equation solutions application problem review content overview problem-solving steps 1, and figure out meaning, find by seeking of unknown and x said 2

39、, and according to meaning find equivalent relationship, lists Equation 3, and solutions equation 4, and test, and wrote answers according to meaning find equivalent relationship of common method 1 , And according to common of number relationship type, established equivalent relationship 2, and acco

40、rding to has learn had of calculation formula, 3, and according to problem in the of focus described sentence from overall Shang determine basic of equivalent relationship 4, and using segment figure, and list method, method analysis number4当沟槽内每一层回填土压实成型后，用人工将井室周围 50cm 范围内的松土挖去，换填预先拌制好的无砂大孔混合料或低标号混

41、凝土，并在保证在混合料强度达到要求时才能回料。井室周围回填压实时应沿井室中心对称进行，且不得漏夯。在进入道路结构层施工时，除采用压路机碾压外，还应采用蛙式打夯机或立式冲击夯逐层对井周 60 公分范围内进行补夯，以清除碾压死角。1.7 人孔、井框（盖）安装施工（1）、对井周进行加固：在井筒安装施工完成后，要对井周进行加固。具体做法是：沿井筒周围放加固钢筋箍；放置预制钢筋砼井圈，注意要将预制砼井圈平面位置及标高调整好(井圈顶至设计路面标高之间的厚度为路面厚，井圈与井室平面位置一致)；井周浇筑无砂大孔混合料或低标号混凝土进行加固（浇筑砼时必需严格采用机械振捣）；用临时盖板将井口盖好。（2）、对阀门井

42、井盖标高的调整井盖标高的调整具体做法是：露出预制钢筋砼井圈；确定阀门井的井盖 标高；将阀门井盖放置在预制钢筋砼井圈上，井盖底沿井周用 46 个铁制楔型塞，将井盖顶面调至放线标高位置；井盖底与预制钢筋砼井圈间用高标号砂浆进行填充；每调好一座井后，用围护进行隔离，直至砂浆达到强度后方可撤去围护；井周用砼进行补填，并用冲击夯具进行夯实。1.8 砂浆抹面以及防水涂层施工1.8.1 材料准备（1）水泥：325 号及其以上矿渣水泥或普通水泥，颜色一致，宜采用同一批号的产品。1.8.1.2 砂：平均粒径 0.350.5mm 的中砂，砂颗粒要求坚硬洁净，不得含有粘土、草根、树叶、碱质及其它有机物等有害物质。砂

43、在使用前应根据使用要求过不同孔径的筛子，筛好备用。（2）主要机具搅拌机、5mm 及 2mm 孔径的筛子、大平锹，除抹灰工一般常用的工具外，还应备有软毛刷、钢丝刷、筷子笔、粉线包、喷壶、小水壶、水桶、笤帚、锤子、錾子等。（3）作业条件 a.管支墩结构工程全部完成，并经监理验收，达到合格标准。choose the correct meaning; (4) to correct the typos; (5) so the child write words (ABAB, and AABB); (6) in accordance with written words; (7) the complete

44、 word, and explain the meaning of the word; (8) collocation; (9) make sentences with the word; (10) the written language as required. (C) the main sentence types (1) complete sentences; (2) write down the meaning of a sentence or expression of thoughts and feelings; (3) write sentences as required;

45、(4) finish malalignment of the sentence; (5) modified sentences. 2, knowledge classification (1) the common conjunctions coordinate: . . 一面 . 1, to examine the topic, identify problems associated with two 2, analysis, alternative question two is in direct proportion to the amount of the associated r

46、elationship is inversely proportional relationship. 3, and set unknown, column proportion type 4, and solutions proportion type 5, and test, wrote answer language plenary, and subject: application problem (1)-simple application problem and composite application problem review content simple applicat

47、ion problem composite application problem answers application problem of general steps 1, and figure out meaning-through examines the, find known conditions and by seeking problem 2, and analysis number relationship-analysis known conditions Zhijian, and conditions and problem Zhijian of relationshi

48、p, determine problem-solving method and problem-solving steps. 3, and column type calculation-lists formula, is out subdivisions 4, and test, and wrote answer-check, and checking, and wrote answers typical application problem 13, and subject: application problem (3)-column equation solutions applica

49、tion problem review content overview problem-solving steps 1, and figure out meaning, find by seeking of unknown and x said 2, and according to meaning find equivalent relationship, lists Equation 3, and solutions equation 4, and test, and wrote answers according to meaning find equivalent relationship of common method 1 , And accordin