16#楼落地式脚手架施工方案 (改编)

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江苏省苏中建设集团股份有限公司【滨河西苑】落地式脚手架施工方案第1页目录一、编制依据........................................................................................................................21.1施工图纸及施工组织设计···································································21.2标准、规范、规程及其他···································································2二、工程概况........................................................................................................................2三、脚手架的选用................................................................................................................3四、施工准备........................................................................................................................34.1技术准备························································································34.1技术准备。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。4五、脚手架的搭设要求........................................................................................................55.1技术参数························································································55.2落地式脚手架搭设的基本要求·····························································65.3技术要点························································································85.4施工要求························································································8六、安全注意事项..............................................................................................................116.1安全保证措施·················································································116.2安全防护措施················································································136.3防雷雨台风措施·············································································13七、落地式脚手架的验算..................................................................................................137.1计算参数······················································································137.2大横杆的计算··························································错误!未定义书签。7.3小横杆的计算··························································错误!未定义书签。7.4扣件抗滑力的计算····················································错误!未定义书签。7.5脚手架立杆荷载计算·················································错误!未定义书签。7.6立杆的稳定性计算··········································································197.7最大搭设高度的计算·················································错误!未定义书签。7.8连墙件的计算··························································错误!未定义书签。7.9立杆的地基承载力计算··············································错误!未定义书签。江苏省苏中建设集团股份有限公司【滨河西苑】落地式脚手架施工方案第2页一、编制依据1.1施工图纸及施工组织设计施工图纸包头滨河西苑项目16#楼施工图纸施工组织设计《包头滨河西苑项目施工组织设计》设计文件《包头滨河西苑项目岩土工程勘察报告》1.2标准、规范、规程及其他序号施工规范、规程名称编号1《建筑施工扣件式钢管脚手架安全技术规范》JGJ130-20112《建设施工高处作业安全技术规程》JGJ80-20113《建筑施工安全检查标准》JGJ59-20114《建筑结构荷载规范》GB50009-20125《钢结构设计规范》GB50017-20116《建筑地基基础设计规范》GB50007-20117《建筑施工手册》2005注:施工过程中如遇到国家规范、图集、标准更改,则工程要求也随之相应更改,按照新标准执行。二、工程概况本工程为包头市东河区“经适房”滨河西苑,我方承建为二标段9栋楼,分别为1#、2#、3#、8#、9#、10#、11#、12#、16#楼总建筑面为65355㎡建筑高度为35.050m;结构形式为框架-剪力墙结构,除了16#楼刚刚准备开始主体施工以外其它栋楼均已进入二次装修施工阶段,外架已全部拆除;依据现场施工情况16#楼采用落地式双排脚手架进行施工。工程参建单位:由包头鼎泰房地产有限公司投资兴建;呼和浩特市智汇研究院进行设计;包头科达勘察测绘研究院进行地质勘察;内蒙古沁原监理有限公司进行监理,江苏省苏中建设集团股份有限公司承建。工程承包方式:承包人以包工、包料、包质量、包工期、包文明施工、包安全、包验收合格的方式承包。本工程16#楼基础主要采用天然地基筏板基础,局部天然地基独立基础;江苏省苏中建设集团股份有限公司【滨河西苑】落地式脚手架施工方案第3页合同工程质量标准:按国家现行施工验收规范执行,工程质量各项指标按照国家规范必须达到合格。三、脚手架的选用本工程考虑到施工工期、质量和安全要求,故在选择方案时,应充分考虑以下几点:(1)架体的结构设计,力求做到结构要安全可靠,造价经济合理。(2)在规定的条件下和规定的使用期限内,能够充分满足预期的安全性和耐久性。(3)选用材料时,力求做到常见通用、可周转利用,便于保养维修。(4)结构选型时,力求做到受力明确,构造措施到位,升降搭拆方便,便于检查验收;脚手架拟采用扣件式双排钢管(Φ48×3.0)脚手架进行搭设,其钢管立杆纵距1.5m,横距1.05m,钢管大横杆步距1.5m,剪刀撑按45°~60°进行搭设。在脚手架外侧面的大横杆按900mm一道进行搭设。为保证架体的整体承载力和稳定性,在各层结构处按两步三跨设置连墙杆,以保证架体的稳定性。脚手架外立杆侧满挂密目安全网进行封闭,施工层脚手架内立杆与建筑物之间拟采用模板或兜网进行封闭。外架必须按规定设置连墙拉结点,竖向每2步,水平每3跨必须设置一道牢固的连结点。在结构墙板混凝土上预埋φ25的钢筋,脚手管与外架锁紧,脚手架的水平杆与竖向短管之间采用扣件连接拉结。Φ25钢筋环钢管用扣件锁紧与双排立杆锁紧钢筋环大样四、施工准备4.1技术准备由技术部牵头,组织工程部、质量部、商务部、物资部等相关部门,详细审阅施工图纸、设计交底、设计洽商,结合设计规范、施工规范、抗震构造图集及工程质量验收标准,对图纸中存在的问题请设计给予确认、提出合理建议,解决并办理相关手续,尽江苏省苏中建设集团股份有限公司【滨河西苑】落地式脚手架施工方案第4页量将问题在施工前解决。对工程中重点部位采取详细的技术措施,并对工人作好技术交底。由总包组织对特殊工种进行培训,坚持持证上岗。4.2材料准备结合本工程结构特点以及钢管要求刚度好、强度高的优点,本工程外脚手架采用扣件式钢管脚手架,在选材方面需遵循以下原则:4.2.1钢管(1)脚手架钢管应采用现行国家标准《直缝电焊钢管》或《低压流体输送用焊接钢管》中规定的3号普通钢管。(2)钢管质量应符合国家现行标准《碳素结构钢》中Q235-A级钢的规定。(3)钢管的截面尺寸应为外径48mm,壁厚不小于3.0mm。用于立杆、纵向水平杆、剪刀撑和斜杆的钢管长度为4~6m(这样的长度一般重25kg以内,适合人工操作)。用于横向水平杆的钢管长度为2m,以适应脚手架宽的需要。(4)钢管质量的检验要求①.钢管的外观质量检验应按下表进行钢管质量检验要求项次检查项目验收要求新管1产品质量合格证必须具备2钢管材质证明书3表面质量表面应平直光滑,不应有裂缝、结疤、分层、错位、硬弯、毛刺、压痕和深的划道4外径,壁厚0.5mm,0.5mm5端面应平整,端面切斜的偏差1.70mm6防锈处理必须进行防锈处理,度锌或刷防锈漆旧管7钢管锈蚀程度应每年检查一次管壁上锈蚀的深度,不得超过0.50mm8其它项目同新管项次3、4、5同新管3、4、5②.钢管应无裂纹,两端面应平整,严禁打孔。4.2.2扣件(1)应使用与钢管管径相配合的、符合我国现行标准《钢管脚手架扣件》的可锻铸江苏省苏中建设集团股份有限公司【滨河西苑】落地式脚手架施工方案第5页铁扣件。(2)技术要求:①.扣件应采用机械性能不低于KTH330-08的可锻铸铁制作。②.铸铁不得有裂纹、气孔;不宜有缩松、砂眼或其它影响使用的铸铁缺陷;并应将影响外观质量的粘砂、披缝、毛刺、氧化皮等清除干净。③.扣件与钢管的贴合面必须严格整形,应保证与钢管扣紧时接触良好。④.扣件活动部位应能灵活转动,旋转扣件的两旋转面间隙应不小于1mm。⑤.当扣件紧夹钢管时,开口处的最小距离应不小于5mm。⑥.扣件表面应进行防锈处理。(3)扣件质量的检验要求扣件质量应按下表进行检验扣件质量检验要求项次检查项目要求新扣件1产品质量合格证,生产许可证,专业检测单位测试报告必须具备2表面质量及性能应符合技术要求(2)~(6)的规

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