筏板基础专项施工方案1

forming the Government, enterprises and the public forces and actively participate in, sharing a strong atmosphere. Comrades, do work in the countryside and five water treatment, three to split, is related to overall development, responsibility, task, departments at all levels must play more than spirit, do solid work, and difficult, and efforts to promote the work to a new level, South Gate of XX beauty to make new and greater contribution to the building! Research by the County, the County Government, the convening of this county, three, poverty and development, environmental protection, the main task is to 2016-these work arrangements. For a while, . . Gay also made an important speech, we must pay special attention to follow-up. The following, according to the citys plans and . . Comrade usual requirements of our work, I want to tell you three views: the first, on three last year, my County three has made certain achievements. Capital work is done using city funds . . Billion yuan, annual tasks . .%; only completion target . . Minutes, annual tasks . . rate, access to city-wide recruitment talent introduction . . Award recognized scientific and technological achievements . . , Cooperation of . . Innovation platforms . . Also complete tasks in the city. The overall three column in the city . . Name, did not enter the city in recognition of the results of this. This means we and other counties than there is room to continue the efforts. From each town in the County Street, allocusing on ways and means of improving and upgrading work, further development of three to split. (A) fully grasp no unauthorised created. The township no unauthorised created the existing building one household, one document survey and file storage work must be unconditional and full coverage. Main corridor leading to the town (road, river) village, the Central built-up area of the town on both sides must be to create a no unauthorised village. According to five hundred villages created and shanty towns, villages, old houses, reconstruction of old plant, expand create, upgrading creates files, the real no unauthorised village created into the benefit of the people of very good thing. (B) to strictly manage count as unauthorised controls. Promoting the new control work to move the center of gravity, management measures to the front, and earnestly pipes effectively. A strict new unauthorised network responsibility. Sectors such as land, housing and basic stations (stations) and the Township of grid accountability mechanisms must be strictly in accordance with the new regulatory requirements, effective implementation of the area of responsibility of the new inspections, suppression, demolition work to ensure that the new zero tolerance. Second, public security, water, electricity, water, oceans and fisheries, tourism collaboration, market supervision departments should strictly enforce the illegal construction of disposal of relevant provisions of the regulations, effective fulfilment of responsibilities, particularly in electricity and water supply, and other units may not be new illegal buildings to supply water and electricity supply. While more regulation to prevent personal privacy violations. Illicit trading in illegal construction in the Ministry of public security sector to strictly from the blow. Three is to create additional offence reporting system of incentives. According to building law and covers an area of nature, to report timely degree divided report grade, effective after the removal of certain incentives. (C) integrated implementation , building demolition, modification, use combination. Demolition is the means and purpose built is. To adhere to the building demolished, combination of construction and demolition waste, demolished with combined efforts to improve the scientific level of three to split; second, we must pay attention to three to split and five hundred and five water treatment, three of the four sides, the shackDistrict transformation, and dangerous old room transformation and two road sides, series work organic combined up, active do River, and along demolition work, and manpower advance village in the, and old residential demolition work, to improved masses housing conditions and live environment; three to put three modified a split as traditional low, and small, and bulk industry structure transformation upgrade of important initiatives to caught, speed up advance industry Park, effective optimization park environment筏板基础专项施工方案编制依据混凝土结构工程施工质量验收规范GB50204-2002地下工程防水技术规范GB50108-2001钢筋机械连接通用技术规程JGJ10796钢筋焊接及验收规程JGJ1896混凝土泵送施工技术规程JGJ/T1095混凝土强度检验评定标准GBJ10787钢筋混凝土高层结构设计与施工规程JGJ391高层建筑箱形与筏形基础技术规范JGJ6-99工程概况 物管中心位于含山华阳西路与A径路交汇处；建筑面积1427。56 m；地下一层，地上二层,总高度9m，钢筋混凝土剪力墙结构。本工程建筑物使用年限为50年,耐火等级为地下一级，地上二级。施工准备A.钢筋工程1。作业条件钢筋绑扎前，核对钢筋加工料表是否正确，并检查有无锈蚀现象，除锈后再运至施工部位。做好放线工作,弹好筏板基础、柱、墙位置线及钢筋位置线。2.材料要求钢筋：级别、规格符合设计要求。质量符合现行标准要求。2022扎丝、钢筋垫块等。3.机具准备钢筋切断机、钢筋弯曲机、钢筋调直机、钢筋钩子、钢筋扳子、钢丝刷、断扎丝铡刀等，墨斗、墨汁、小白线、粉笔等。B.模板工程1。作业条件a。放好轴线、模板边线、水平控制标高线。b。底板钢筋绑扎完毕，水电管线及预埋件均已安装,钢筋保护层垫块己垫好，并办完隐检手续。2.材料要求模板采用砖胎模，符合现行规范要求.3。施工机具扳手、钳子、线坠、小白线、水性隔离剂等。操作工艺A.钢筋工程放线并预检成型钢筋进场排钢筋机械连接接头绑扎柱墙插筋定位交接验收a。绑扎底板下层网片钢筋1.在垫层上弹好筏板基础、钢筋位置线，先铺下层网片的长向钢筋，后铺下层网片上面的短向钢筋，钢筋接头采用机械连接。2.绑扎加强筋：依次绑扎局部加强筋。b。绑扎底板上层网片钢筋1。铺设上层铁马凳：马凳用剩余短料焊制,马凳短向放置，间距1。21.5m.2.绑扎上层网片下筋：先在马凳上绑扎架立筋，在架立筋上划好钢筋位置线，按图纸要求，顺序放置上层网片的下筋;绑扎上层网片上筋：根据在上层下筋上划好的钢筋位置线，按顺序放置上层钢筋，钢筋接头采用焊接或机械连接，接头在同一截面相互错开50%,同一根钢筋尽量减少接头。3。绑扎柱和墙体插筋：根据放好的柱和墙体位置线，将柱和墙体插筋绑扎就位，并和底板钢筋点焊固定，要求接头均错开50，根据设计要求执行，设计无要求时,甩出底板面的长度45,柱绑扎两道箍筋，墙体绑扎一道水平筋。底板保护层为40mm，梁柱主筋保护层为35mm，外墙迎水面为25mm，外墙内侧及内墙均为25mm。保护层钢筋垫块间距为1500mm，梅花型布置。c。绑扎地梁钢筋1.在放平的梁下层水平主钢筋上，用粉笔画出箍筋间距。箍筋与主筋要垂直,箍筋转角与主筋交点均要绑扎，主筋与箍筋非转角部分的相交点成梅花交错绑扎。箍筋的接头,即弯钩叠合处沿梁水平筋交错布置绑扎。2。地梁在槽上预先绑扎好后,根据已划好的梁位置线用塔吊直接吊装到位.与底板钢筋绑扎牢固。B.模板工程120mm砖胎模:基础砖胎模放线砌筑抹灰。a。120mm砖胎模1.砖胎模砌筑前，先在垫层面上将砌砖线放出,比基础底板外轮廓大40mm，砌筑时要求拉直线，转角处或接口处留出接搓口,墙体要求垂直。砖模内侧、墙顶面抹15mm厚的水泥砂浆并压光，同时阴阳角做成圆弧形.底板外墙侧模采120mm厚砖胎模,高度同底板厚度，砖胎模采用MU10砖，M5水泥砂浆砌筑,内侧及顶面采用1:2.5水泥砂浆抹面.2.考虑混凝土浇筑时侧压力较大,砖胎模外侧面土方必须回填并夯实.b。集水坑模板根据模板板面由10mm厚竹胶板拼装成筒状，内衬两道木方（100100mm)，并钉成一个整体，配模的板面保证表面平整、尺寸准确、接缝严密.模板组装好后进行编号。安装时用塔吊将模板初步就位,然后根据位置线加水平和斜向支撑进行加固,并调整模板位置,使模板的垂直度、刚度、截面尺寸符合要求。c.外墙高出底扳300mm部分1.墙体高出部分模板采用10mm厚竹胶板事先拼装而成，外绑两道水平向木方(50mm100mm）。2.在防水保护层上弹好墙边线，在墙两边焊钢筋预埋竖向和斜向筋用12钢筋剩余短料），以便进行加固。3。用小线拉外墙通长水平线，保证截面尺寸为297mm（300mm厚外墙)，将配好的模板就位，然后用架子管和铅丝与预埋铁进行加固.模板固定完毕后拉通线检查板面顺直。C。混凝土工程筏板基础：钢筋模板交接验收顶标高抄测混凝土搅拌现场水平垂直运输分层振捣赶平抹压覆盖养护1。本工程施工防水砼采用商品砼,基础及地下室外墙防水混凝土施工为特殊过程,施工前应编制作业指导书和专项技术交底，按要求进行连续监控:2。砼采用商品混凝土工厂制备的泵送混凝土。商品混凝土工厂应提供“混凝土合格证”、“原材料的检测报告、合格证、准用证”、“混凝土的初凝时间”，每天应有“浇筑申请”、 “开盘鉴定，每3车抽测一次坍落度。泵送混凝土的运输延续时间有一定的限制，要在混凝土初凝之前顺利浇筑，泵送混凝土的运输延续时间以不超过所测得的混凝土的初凝时间的1/2为宜。为保证混凝土质量，混凝土搅拌运输车在装料前必须将搅拌筒内积水倒净,并且混凝土搅拌运输车在行驶过程中，给混凝土泵喂料前和过程中都不得随意往搅拌筒内加水。严禁将质量不符合泵送要求的混凝土拌合物入泵，为筛除粒径过大的集料或异物，防止其入混凝土产生堵塞，在混凝土泵进料斗上设网筛专人喂料。泵送前的准备工作：模板和支撑的检查;保温板检查；检查混凝土泵或泵车的放置处是否坚实稳定;检查混凝土泵和输送管路；组织方面的准备；对混凝土泵的操作人员检查上岗证；检查通路是否畅通，水、电供应是否有保证,备用泵是否到位。3。浇筑竖向结构砼时布料设备的出口离模板内侧面不应小于50mm，且不得向模板内侧面直冲布料，也不得直冲钢筋骨架。浇筑水平结构砼时不得在同一处布料，在至23m范围内水平移动布料，且宜垂直于模板布料。振捣泵送砼振动棒移动间距为400mm,振捣时间宜为1530S，且隔2030Min后进行第二次复振。砼运送途中,当坍落度损失过大时，可在符合砼设计配比条件下适量加水，除此之外，严禁往拌筒内加水。泵送前应先用适量的水泥砂浆润滑输送管内壁；预计泵送间歇时间超过45mm或当砼出现离析时，应立即用压力水冲洗管内残留的砼。4。 由于筏板基础砼要求为抗渗砼,尽量减少施工缝的留置。基础底板施工时，现场设置砼输送泵泵送入模，砼应一次浇筑完成，底板砼必须分层进行，每层铺灰最大高度不超过50cm；布料杆端部接软管下料，使砼自由下落高度不超过1.5m，采用插入式振捣密实，砼初凝前表面平板振捣器普便过一遍，用木抹子压实搓平,砼浇灌应连续进行，施工间歇不得超过砼初凝时间。5.基础底板一次性浇筑，间歇时间不能太长，不允许出现冷缝,混凝土浇筑顺序由一端向另一端浇筑，混凝土采用踏步式分层浇筑,分层振捣密实，以使混凝土的水化热尽量散失。具体为：从下到上分层浇筑，从底层开始浇筑，进行5m后回头来浇筑第二层.如此依次向前浇筑以上各层，上下相邻两层时间不超过2小时，为了控制浇筑高度,须在出灰口及其附近设置尺杆,夜间施工时,尺杆附近要有灯光照明。6.每班安排一个作业班组，并配备3名振捣工人，根据混凝土泵送时自然形成的坡度，在每个浇筑带前、后、中部不停振捣，振捣工要求认真负责,仔细振捣，以保证混凝土振捣密实.防止上一层混凝土盖上后而下层混凝土仍未振捣，造成混凝振捣不密实。振捣时,要快插慢拔，插入深度各层均为350mm，即上面两层均须插入其下面一层50mm。振捣点之间间距为450mm, 梅花型布置,振捣时逐点移动，顺序进行，不得漏振。每一插点要掌握好振捣时间，一般为2030s，过短不易振实，过长可能引起混凝土离析，以混凝土表面泛浆，不大量泛气泡，不再显著下沉，表面浮出灰浆为准，边角处要多加注意，防止漏振。振捣棒距离模板要小于其半径的0。5倍，约为150mm，并不宜靠近模板振捣，且要尽量避免碰撞钢筋、芯管、止水带、预埋件等。7.混凝土泵送时，注意不要将料斗内剩余混凝土降低到200mm以下，以免吸入空气。混凝土浇筑完毕要进行多次搓平，保证混凝土表面不产生裂纹,具体方法是振捣完后先角长刮杠刮平,待表面收浆后,用木抹刀搓平表面,并覆盖塑料布以防表面出现裂缝，在终凝前掀开塑料布再进行搓平,要求搓压三遍，最后一遍抹压要掌握好时间，以终凝前为准，终凝时间可用手压法把握。混凝土搓平完毕后立即用塑料布覆盖养护，浇水养护时间为14d。成品保护保护钢筋、模板的位置正确，不得直接踩踏钢筋和改动模板；在拆模或吊运物件时，不得碰坏施工缝止水带.当混凝土强度达到1。2MPa后,方可拆模及在混凝土上操作。一、工程概况： 1、工程特点：本工程位于含山县新城区华阳西路与A径路交汇处。占地面积624.24m2，总建筑面积803。32m2，建筑占地面积1427。56m2，框架结构.基础全部为大开挖，东西向外放外放12米，南北向外放14米，长40米，宽38米，第一次深挖至4。8米,第二次深挖至最深-7.2米。开挖面积1520m2，开挖土方工程量6800多m3.：ZD1及其他标底基础另挖并各自外放0.2M.开挖程序：自然地坪四周各外放6米定桩，南面另放2米定桩(开挖范围内东西向40米；南北向38米)每挖1。5米深时再留1.5米宽度平台，共分4坡3平至设计标高。开挖土方总工程量9000m3。基坑土方开挖依据现场情况，计划采用基坑放边坡处理，其放坡系数为1：0。5。计划基础开挖回填工程10天时间完成。 2、地形地貌： （1)原自然地坪与相对1点高差0.80米，现定室外地坪低于相对1点0。8米,室外需回填0。80米. (2）东侧距原建筑物太近,为保证原建筑物的安全，计划建筑物东侧视情采用相应的支护方案确保安全施工。 (3）施工条件： 1、测量定位已完成。高程控制点，以东侧人行道相对点以上0。8米为工程0。000。 2、现场临设施工完毕，能正常使用. 3、施工道路基本畅通，施工用临时用水、电已连接。 4、机械、劳动力已完成调配，现已进入施工现场。 二、施工准备： 1、施工要求： 1）标高水准点依据建设单位给定的高程点已引入施工区。 2）熟悉施工图纸及地质情况，埋设好轴线控制桩，了解地下管线情况,检查挖土及运输机械的准备情况，进行施工前技术质量和安全交底工作。 3)制定土方开挖施工方案,安排工期计划。 2、现场准备： 1）进行定位放线，放出基坑开挖线和边坡线。 2）落实基坑支护队伍，以便开挖与支护同时进行。 3、施工方案： 1）施工工艺：测量定位？机械进场？土方开挖？人工修边角？基底平整？基底普探。 2）施工流向：清理地表垃圾土并外运,自上而下，依次开挖,依据施工开挖线分二次开挖。土方倒运至自然地外堆放，二次开挖到标高5。6米处。形成一个流水作业线，确保工程顺利进行. 3）施工方法:采用两台挖掘机，1台装载机，N辆自卸汽车配合外运. 人工刷坡：待基坑开挖出一定范围后进行人工刷坡，依据现场土质和周围环境情况计划坡比，放坡系数为1：0。5，人工刷坡与机械开挖同时进行。要求配合机械挖土的施工人员清楚挖土区域及机械前后行走范围及回转半径，严禁在机械前后行走范围及回转半径内行走及施工配合作业。 4）基坑支护:本工程设有地下室，且东侧建筑物较近，开挖最深度至-7.2米（自然地坪标高为0。8m），因而依据建设工程安全生产管理条例和强制性条文的有关规定进行安全防护,因此南北向必须放大坡度至8米。基坑四周设置扣件钢管栏杆，并绑密目网,设置警示牌，防止人员及物体坠落。采用扣件和钢管搭设爬梯，供施工人员上、下基坑. 5）施工排水:地面排水遵循先整治后开挖的施工顺序，施工前先做好地面排水，地面排水随地形坡势沿开挖基坑外边缘设50公分高阻水带,再修200300水渠排水，以防地表水流入坑内. 坑内排水沿基坑纵向中线向基坑南北方向挖4个积水坑，用水泵抽水。 三、普探与验槽: 1、普探 基坑挖至设计深度后进行普探，普探应按建筑物场地基坑探察与处理暂行规定对基坑进行探察,会同建设单位有关技术人员进行全面的地质情况负荷,符合设计要求及有关规定后，即可进行灰土回填。如有地下墓坑、软土层等情况，需由设计单位、监理单位提出处理方案，处理完毕后方可继续施工。 2、验槽：基坑施工完毕后，会同勘察、设计、建设、监理等相关单位进行验槽，在相关单位人员签字盖章后方可进行下道工序的施工. 四、工期及施工进度安排：工期计划60天，从2013年5月31日至2013年7月30日,遇雨天气候影响及节假期间,工期顺延。 五、质量保证措施： 1、土方工程施工中，应经常测量和校正其平面位置、水平标高和边坡坡度.平面控制桩和水准控制点采取可靠的保护措施,定期进行复测和检查，保证其正确性。 2、基坑开挖过程中应对土质情况、地下水位和标高等变化情况经常检查，做好原始记录，若发现地基土质与设计不符时，需经有关人员研究处理并做好隐蔽工程记录，确保基坑工程质量。 六、安全施工措施： 1、土方工程施工过程中必须遵循国家、省、市及公司的安全施工法规、制度，严格执行各专业操作规程。 2、对施工人员进行安全教育、施工前进行安全技术交底. 3、土方工程的边坡坡度、排水坡向等必须按审批后的施工方案执行，确保边坡稳定和基坑的施工安全. 4、机械前后行走时必须看清楚前后方是否有人或障碍物，机械回转时必须看清楚360度回转半径内是否有车辆和行人。且机械施工至围墙处时必须有专人配合指挥挖掘机驾驶员，防止由于驾驶员的距离错觉造成对围墙的碰撞而导致事故的发生。 5、确定地下管线的位置，开挖及运输过程中有专人看守，防止对地下管线造成破坏. 6、人员刷坡与机械开挖保持一定的安全距离且夜间施工时不能同时进行。 7、土方开挖需要使用的机械应具备国家法定检测机构检测合格属正常使用范围内的机械。 8、工地设专职安全员进行预防及检查工作，发现隐患及时处理确保施工安全.所有进场钢材，挂有标牌，牌上印有厂标、钢号、炉罐（批）号、直径等标记并附有质量证明书；无质量证明书，不得入库；经检验合格后物资设备部方可收货，如发现不合格钢材，不得验收入库。合格钢材应分批验收入库。forming the Government, enterprises and the public forces and actively participate in, sharing a strong atmosphere. Comrades, do work in the countryside and five water treatment, three to split, is related to overall development, responsibility, task, departments at all levels must play more than spirit, do solid work, and difficult, and efforts to promote the work to a new level, South Gate of XX beauty to make new and greater contribution to the building! Research by the County, the County Government, the convening of this county, three, poverty and development, environmental protection, the main task is to 2016-these work arrangements. For a while, . . Gay also made an important speech, we must pay special attention to follow-up. The following, according to the citys plans and . . Comrade usual requirements of our work, I want to tell you three views: the first, on three last year, my County three has made certain achievements. Capital work is done using city funds . . Billion yuan, annual tasks . .%; only completion target . . Minutes, annual tasks . . rate, access to city-wide recruitment talent introduction . . Award recognized scientific and technological achievements . . , Cooperation of . . Innovation platforms . . Also complete tasks in the city. The overall three column in the city . . Name, did not enter the city in recognition of the results of this. This means we and other counties than there is room to continue the efforts. From each town in the County Street, alland improve idle land of utilization, real achieved environment improved and productivity development mutual promoting total win. Five, firmly implement, promoting work ahead, to create highlights. Third deployment, implementation of seven, then it is imperative to strengthen responsibility and improve the mechanisms and implementation. All localities and departments must be convinced that goals, going all out, mustering spirit, work together to ensure that this years objectives carry out tasks, at the forefront. First, we must strengthen the leadership to implement. Departments at all levels should always work and rural five water treatment, three to split in an important position, and carry the main responsibility, main leader personally, leaders arrested and layers of responsibility rank transmission pressure established hierarchical accountability, and work together to promote the work of the mechanism, a concerted effort pay attention to implementation. County nongban, flood, three to one down to further play a leading catch total, integrated and coordinated role of all kinds is long, Sheriff Inspector to effectively fulfill their responsibilities, formed the alignment on the fire line and management a lively situation. Second, we must strengthen the test implementation of the Governor. Role play the Governor got the baton, for agricultural and rural focus and five water treatment, three to split work, refine improve assessment methods and evaluation system, accurate assessment. Combined with dare play, tree benchmark style building five major operations, carry on and gain firsthand experience of supervision, in particular, to strengthen the focus on the long signs go left, names such as supervision, urged all levels longer on duty in place. Through the supervisory assessment, to promote habits, stimulating power. Third, we must strengthen implementation style. Departments at all levels to work in rural areas and five water treatment, three to split as training cadres for major platforms, compete against large examination room, inspection cadres work performance of the ring, water control and the Japanese pulled a workout, training, discovery and selection of cadres. Than good catch up, first to excellence-oriented. Party members and cadres at all levels must adhere to the rural, water control and the Japanese pulled a grass-roots, put down the shelf, leaned pragmatic style, the spirit of play, become a benchmark model. Four, we must strengthen propaganda implementation. Comprehensive utilization of micro-credit, micro-blogging, new media, mining, summarizing, good publicity work in the countryside and five water treatment, three to split advanced models, point to gather positive energy for the community to see the results of our work in time, increase public awareness, participation rates, satisfaction and support. Play gongqingfu, a mass organization and grass-roots such as schools, communityThe role of5