48钢筋工程施工方案

佳兆业1号项目钢筋工程施工方案1目录第一章编制说明及编制依据··········································································2第一节编制依据···················································································2第二章工程概况·························································································2第三章施工准备·························································································3第一节技术准备···················································································3第二节钢筋加工机械准备·······································································4第三节测量准备···················································································4第四节施工工艺流程·············································································5第四章钢筋材质的试验、堆放与代换······························································5第一节材质要求···················································································5第二节钢筋的运输和存储·······································································7第三节钢筋的代换················································································7第五章钢筋加工·························································································7第一节钢筋加工程序·············································································7第二节钢筋的调直与成型·······································································8第三节钢筋加工质量要求······································································10第六章钢筋的连接与锚固············································································11第一节钢筋接头形式的选择···································································11第二节钢筋接头的区域及长度要求··························································12第三节钢筋的锚固长度和搭接长度··························································13第四节钢筋直螺纹连接施工···································································13第七章钢筋的安装与绑扎············································································17第一节钢筋保护层···············································································17第二节墙体钢筋施工············································································17第三节梁、板钢筋的施工······································································19第四节柱筋的施工要点·········································································22第五节楼梯钢筋绑扎············································································23第六节钢筋施工应注意的有关事项··························································23第八章质量检查、试验与验收······································································25第九章成品保护························································································26第十章安全文明施工··················································································27第十一章环保措施·····················································································29佳兆业1号项目钢筋工程施工方案2第一章编制说明及编制依据第一节编制依据1.《混凝土结构工程施工质量验收规范》GB50204-2002（2011版）2.《钢筋焊接及验收规范》JGJ18－20123.《建筑物抗震构造详图》11G329-14.《钢筋直螺纹接头技术规程》JGJ109-965.《混凝土结构施工图》11G101-16.《本工程建筑及结构施工图纸》7.本工程特点、现场实际条件、自然环境。第二章工程概况广州佳兆业1号项目总承包工程位于广州市天河区黄埔大道东（坚红化工厂地块）。项目主体建筑工程用地面积为17304m2，总建筑面积约85017m2，建筑基底面积1611m2。工程由一个整体的3层地下室，1#、2#栋52层超高层住宅，3#栋9层中高层住宅，3层综合楼组成。建筑高度177.7m。设计使用年限为50年。本工程钢筋品种、规格、型号较多的特点，为此必须要求钢筋工长详细了解图纸，对班组做好详细的技术交底。佳兆业1号项目钢筋工程施工方案3第三章施工准备第一节技术准备1、做好钢筋施工的技术交底和钢筋翻样工作；2、钢筋施工场地的平面布置规划，水、电源准备等；3、收集钢筋出厂试验报告单，核验符合要求后送样试验；4、做好各种规格钢筋接头型式的试验；5、钢筋垫块的采用：板底筋、梁筋采用砂浆垫块，规格50×50mm；竖向钢筋（剪力墙、柱），剪力墙内撑采用水泥内撑，水泥内撑的长度随剪力墙的厚度而顶；剪力墙采用塑料卡环做保护层,厚度按图纸保护层要求。垫块放置间距以保证钢筋与模板分离为准,间距300-800mm左右。6、有双层钢筋的混凝土板，应加马凳支撑，以保证上下层钢筋位置准确，马凳尺寸应根据板厚提前预制。马凳钢筋直径除注明外，板厚小于或等于500时用C12@1000×1000,板厚大于500时用C16@1000×1000。马凳H值=板厚-上、下保护层-双层钢筋直径；B取值不应小于150mm，L取值不应小于200mm。BHLL图1：马凳示意图佳兆业1号项目钢筋工程施工方案4第二节钢筋加工机械准备主要钢筋机械一览表序号机械名称型号单位数量备注1钢筋直螺纹套丝机GX-40套52钢筋切断机QJ40-1台63钢筋弯曲机WJ40-1台64钢筋调直机GJ4/4～14m台35交流弧焊机BX3-500-2台6注：加工机械实际配置按照现场实际需求做适当调配。第三节测量准备根据工程整体平面控制网，在楼层板面上放出主要控制轴线和墙、柱的平面位置线；各结构层板筋、梁主筋摆放线（位置线与标高线）分别在每层顶板模板四周和梁底模端部标出，柱、梁箍筋摆放线在对角主筋上标出。待柱、墙竖向钢筋安装绑扎完成后，在每层竖向钢筋上部标出标高控制点。测量放线必须由专业测量人员进行，测量前需熟悉图纸，做好技术交底，分析重点、难点。放线完成后报相关部门进行复核，并报监理单位进行基线复核，复核无误后方可进行下道工序施工。佳兆业1号项目钢筋工程施工方案5第四节施工工艺流程第四章钢筋材质的试验、堆放与代换对于钢筋用料，根据公司质量保证体系中关于《进货检验和试验程序》及《检验和试验状态程序》的要求进行。主要按以下几方面进行管理：第一节材质要求1、钢筋标识与材质单相符：钢筋进场时现场材料员检验钢筋出厂合格证、炉号和方案、交底钢筋进场取样试验材料报验钢筋下料验收上道工序验收钢筋绑扎报验内部验收工序交接材料复试试验计划钢材相应处理试焊整改整改整改不合格不合格不合格不合格不合格不合格材料退场合格钢筋工程施工工艺流程图佳兆业1号项目钢筋工程施工方案6批量，钢筋进现场后，现场试验员根据规范要求立即做钢筋复试工作，钢筋复试通过后，方能批准使用。2、外观检查合格：钢筋每捆（盘）均有标识牌；钢筋表面不得有裂纹、折痕和锈蚀现象。3、进场钢筋的试验：3.1钢筋试验批量为≤60t，每批由同炉号、同规格、同一炉罐号和同一交货状态的钢筋组成。当上述不足60t时，仍作一试验批。3.2钢筋的力学性能应符合下表的规定热轧钢筋的力学性能与工艺性能表面形状钢筋级别公称直径（㎜）屈服点（MPa）抗拉强度（MPa）伸长率（%）冷弯符号不小于弯曲强度弯心直径光圆HPB3006-1030027010180°dA月牙肋HRB33510－253353007.5180°3dC月牙肋HRB40010—284003607.5180°4dC注：对用于结构纵向受力钢筋，检验所得的强度，且应符合下列要求：○1钢筋的抗拉强度实测值/屈服强度实测值≮1.25○2钢筋的屈服强度实测值/钢筋的强度标准值≯1.3(一、二、三级抗震)3.3化学性能的复试：在钢筋加工过程中，如发现脆断、焊接性能不良或力学性能显著不正常等现象，以及进口钢筋应根据现行国家标准对该批钢筋进行化学成分检验和力学性能的复试。4、不合格品的处理对于复试不合格的钢筋，一律不得使用，并在钢筋堆上插有明显的不合格标识牌，要及时组织不合格钢筋退场，并做好不合格品退场处理记录。5、钢筋进场后应报监理审查。佳兆业1号项目钢筋工程施工方案7第二节钢筋的运输和存储1、钢筋在运输和堆放时，不得损坏标志。钢筋运到现场后必须严格按照分批、牌号、规格、长度等分别堆放，不得混肴。并且立即进行标识。2、钢筋进场后应堆在指定钢筋场地，存放钢筋的场地必须具备必要的排水设施，用型钢架空，离地大于20厘米，各种规格分类堆放整齐。