电白建司钢筋专项施工方案2目录1、编制说明·······················································32、工程概况·······················································43、施工准备·······················································43.1、技术准备·····················································33.2机具准备·······················································43.3、人员准备·····················································53.4、材料准备······················································53.5、材料要求······················································64、主要施工方法···················································64.1钢筋加工·······················································64.2、钢筋要求·····················································74.3钢筋加工要求···················································84.4钢筋抽样······················································94.5钢筋除锈的方法和设备···········································94.6钢筋连接······················································114.7钢筋绑扎·····················································174.8、保证保护层的措施············································305、季节性施工····················································325.1冬季施工······················································325.2雨季施工······················································326、质量要求······················································326.1允许偏差和检查方法············································32电白建司钢筋专项施工方案26.2验收方法······················································336.3、应注意的问题·················································356.4成品保护措施··················································357、安全、环保及文明施工要求·······································367.1、安全文明施工措施·············································367.2、环保措施····················································39地下钢筋施工方案31.编制说明1.1.编制目的、适用范围1.2.编制依据三都县县府西路改造开发项目3#楼施工图纸、洽商、规范标准以及施工现场的实际情况。1.2.1.主要规范、规程序号规范、规程名称规范、规程编号1混凝土结构工程施工质量验收规范GB50204-20022建筑地基基础工程施工质量验收规范GB50202-20023混凝土结构工程施工质量验收规范GB50204-20024建筑工程施工质量验收统一标准GB50300-20015混凝土质量控制标准GB50164-926混凝土结构施工图平面整体表示方法制图规则和构造详图03G101-1、2,04G101-3、47建筑物抗震构造详图03G329(一)8高层建筑混凝土结构技术规程JGJ3-20029钢筋焊接及验收规程JGJ18-200310钢筋机械连接通用技术规程JGJ107-200311滚轧直螺纹钢筋连接接头JGJ163-200412建筑结构长城杯工程质量评审标准DBJ/T01-69-200313建筑工程资料管理规程DBJ01-51-200314混凝土结构工程施工质量验收规范DBJ01-82-20051.2.2.有关法规序号类别名称编号1国家中华人民共和国建筑法2中华人民共和国劳动法3建设工程质量管理条例地下钢筋施工方案44行业建设工程施工现场管理规定建设部令1991年第15号2.工程概况2.1.基本概况2.2.设计概况1建筑面积总建筑面积18205.54㎡地下面积1285㎡占地面积1002.48㎡地上面积16920.54㎡地下1层地上28层2层高(m)地下室4.2m、首层4.5米、2层5.3m、3层3.4米,其余为3米。3结构形式基础形式人工挖孔灌注桩结构形式框肢—剪力墙结构4结构断面尺寸(mm)基础底板厚度250mm剪力墙厚度(mm)200mm、250mm、300mm楼板厚度100mm、120mm、180mm5抗震等级非抗震区,抗震不设防6钢筋类别HPB300级钢筋、HRB400级钢筋7钢筋直径(mm)6.5、8、10、12、14、16、18、20、22、258钢筋接头形式直径≥16mm的钢筋采用直螺纹连接,直径<16mm的钢筋优先采用搭接接头,直螺纹连接应用在基础底板、基础梁、地下室外墙、剪力墙、框架柱、梁,搭接主要应用在楼板。2.3.现场概况2.4.工程难点因施工现场场地狭小钢筋加工多为场内加工,对钢筋的制作及成品的堆放有困难。3.施工准备3.1.技术准备熟悉施工图纸,学习有关规范、规程,按规范要求编制钢筋施工方案,包括基础底板、基础反梁、剪力墙、框架柱、框架梁、板钢筋等的加工、绑扎等施工内容。地下钢筋施工方案5组织工人学习直螺纹接头的工艺操作、钢筋加工、绑扎等施工工艺标准。熟悉钢筋直螺纹连接工艺规程及规范要求。按设计要求放样,检查已加工好的钢筋规格、形状、数量全部正确。做好抄平放线工作,弹好水平标高线,柱、墙外皮尺寸线。按设计、规范列出本工程墙柱筋接头锚固一览表(包括错开百分比、错开长度、百分比系数),根据弹好的外皮尺寸线,检查下层预留搭接钢筋的位置、接头百分比、错开长度。如不符合要求时,要进行处理。绑扎前保护层偏位按1:6调正伸出的搭接筋,并将锈蚀、水泥砂浆等污垢清除干净。钢筋类型钢筋直径受拉钢筋抗震锚固长度LaEC20C25C30C35≥C40一二级抗震三级抗震一二级抗震三级抗震一二级抗震三级抗震一二级抗震三级抗震一二级抗震三级抗震Ⅰ(HPB235)级36d33d31d28d27d25d25d23d23d21dⅡ(HRB335)级d≤2544d41d38d35d34d31d31d29d29d26dd>2549d45d42d39d38d34d34d31d32d29dⅢ(HRB400)级d≤2553d49d46d42d41d37d37d34d34d31dd>2558d53d51d46d45d41d41d38d38d34d备注:所有的锚固长度均大于300mm,HPB235级钢筋两端必须加弯钩。搭接长度修正系数采用1.2(接头面积百分率本工程采用25%)。3.2.机具准备钢筋机具准备一览表序号机械设备名称型号数量功率1调直机GT4/14111.9KW2弯曲机GW40型13KW3无齿锯12.2KW4直螺纹套丝机24KW5电焊机BX1-300A122.5KVA6电焊机BX1-500A138KVA地下钢筋施工方案6数量:使用部位:钢筋编号:钢筋规格:标识卡3.3.人员准备序号区域工种人数备注13#楼钢筋工25人根据工程施工进度和实际情况,各工种人数会有所变化。2起重工2人3力工5人3.4.材料准备3.4.1.钢筋场地准备由于施工场地狭小,钢筋加工采用场内加工,具体要求如下:钢筋场地要求:钢筋原材堆放区、半成品钢筋堆放区、钢筋机械加工棚等场地道路混凝土硬化,且排水通畅。原材堆放地铺碎卵石和砂。在钢筋堆场设3.5m宽的通道,加工好的半成品钢筋放在防雨篷的堆放场区。进场安排:钢筋进场均按规定位置放在指定的场区内,根据有关部门规定,钢筋在夜间进场,由塔吊负责运入指定钢筋堆放区内。钢筋原材开捆前必须进行复试检查其是否检验合格,并征得质量检查员和监理工程师的同意。3.4.2.堆放要求3.4.2.1.原材进场钢筋原材按未检验钢筋、检验合格钢筋、检验不合格钢筋分别堆放。不得直接堆放在地面上,应用100×100木方垫块架空堆放,以免被水浸泡而生锈。并挂标识牌,标识牌规格尺寸297×210mm。标识牌如下:3.4.2.2.成品和半成品已加工好的钢筋按绑扎顺序分类、分区码放整齐,成行成列,成品和半成品存放场地挂标识牌,以便运入施工现场时方便,运入现场后待用成品和半成品挂标识卡,标识卡标明钢筋规格、钢筋编号、使用部位及数量。标识卡如下:材料标识牌材料名称:材料产地:规格型号:进货批量:检验状态:进场日期:天润建设银帆西雅图项目部地下钢筋施工方案73.5.材料要求3.5.1.钢筋检查钢筋出厂合格证、质量证明文件及备案,按规定进行见证取样复试,并经检验合格后方能使用。进场钢筋的生产厂家、规格、型号、数量应与出厂合格证或试验报告中所标明的相符合,指标符合有关标准、规范。钢筋的外观应平直、无损伤,表面不得有裂纹、油污、颗粒状或片状老锈。纵向受力钢筋的抗拉强度实测值与屈服强度实测值的比值不小于1.25;钢筋的屈服强度实测值与强度标准值的比值不大于1.3,其目的是为了保证在地震作用下,结构某些部位出现塑性铰以后,钢筋还具有足够多的变形能力。3.5.1.1.热轧带肋及热轧光圆钢筋必试项目:拉伸试验、弯曲试验以同一厂别、同一炉罐号、同一规格、同一交货状态,同一进场日期的钢筋,每60t为一批(不足60t亦按一验收批计算),取一组钢筋试件做拉伸(屈服点、抗拉强度、伸长率)和弯曲试验,每一次取样不合格时,需对原批钢筋取双倍试样进行试验,合格方可使用。如果钢筋在加工或施工过程中发生脆断和焊接不良,以及机械性能不正常时,需对原批钢筋时行化学分析。根据工程使用的钢筋量,取样次数发实际发生量,按照规范进场时即可取样送检。从一批中任意抽取两根,将端头截去500mm后分别在每一根钢筋中取2个拉伸试件、2个弯曲试件。见证率不小于30%。3.5.1.2.低碳钢热轧圆盘条必试项目:拉伸试验、弯曲试验以同一厂别、同一炉罐号、同一规格、同一交货状态,同一进场日期的钢筋,每60t为一批(不足60t亦按一验收批计算),取一组钢筋试件做拉伸(屈服点、抗拉强度、伸长率)和弯曲试验(取自不同盘)。从一批中任意抽取两根,将端头截去500mm后分别在每一根钢筋中取1个拉伸试件、2个弯曲试件。见证率不小于30%。3.5.2.铁丝钢筋绑扎用的铁丝可采用20~22号铁丝(火烧丝)或镀锌铁丝,其中22号铁丝只用于绑扎直径12mm以下的钢筋。4.主要施工方法4.1.钢筋加工钢筋加工采用场内加工,现场注意保护堆放钢筋成品和半成品。地下