电梯井架体搭设及拆除施工方案

-1--1-目 录1章编制依据·································································································-1-2章工程概况·································································································-1-3章施工预备·································································································-2-1 材料预备·································································································································-2-2 人员预备·································································································································-2-412345656123

电梯井架体防护的搭设···········································································-2-材料选用及要求··················································································································-2-电梯井筒内落地架的搭设要求······················································································-2-电梯井架体悬挑位置·········································································································-2-悬挑工字钢平面定位图···································································································-3-5电梯井内架体及工字钢验算···························································································-7-电梯井洞的安全防护措施········································································-9-················································································-10-总体安排·······························································································································-10-架体撤除挨次·····················································································································-10-安全保证措施·····················································································································-10-第1章编制依据施工图纸；〔JGJ130-2023；〔JGJ80-91；〔JGJ59-99；相关安全、技术规定。第2章工程概况本工程总用地面积m2，其中占地面积 工程性质为办公楼、**及地下停车库。设计为一类高层公共建筑，使用年限50年，耐火等级一级；建筑由栋层办公楼，层**裙房及地下层地下室构成，总建筑面积m2，总建筑高度 米。1-TXFDT1、1-TXFDT2-4～屋面层-21.600m～188.450m消防电梯1-TXFDT1、1-TXFDT2-4～屋面层-21.600m～188.450m消防电梯部位电梯井编号层数范围电梯井高度高度范围备注地下室1-DT1、1-DT2-2～-1-12.300m～-0.100m/1-DT5、1-DT6-4～1-20.400m～7.150m/裙楼区域1-DT7、1-DT8-3～6-16.100m～36.050m/1-DT9、1-DT10-1～4-8.500m～23.950m/1-DT3、1-DT4-2～7-12.300m～41.250m/主塔楼核心筒区域1-TDT1、1-TDT2、1-TDT3、1-TDT41-TDT5、1-TDT6、1-TDT7、1-TDT8、1-TDT9、1-TDT101-TDT11、1-TDT12、1-TDT13、1-TDT14、1-TDT15、1-TDT161～161～291～屋面层-6.350m～78.750m-6.350m～133.900m-6.350m～189.150m低区电梯中区电梯高区电梯、1-DT9、1-DT101-DT3、1-DT4手架搭设架体，钢管立杆落在电梯基坑底标高上。主塔楼区域内的1-TDT1～1-TDT16和井筒高度格外高，为了保证在现场施工中工人施工安全能得到有效保障，特编制此方案。--2-第3章施工预备材料预备5cm行标准。定。制作平台前应对进场的材料及进展严格检查，符合要求后才能使用。人员预备本工程配置专业焊工3人、架子工10人，工长及技术人员各1人。第4章电梯井架体防护的搭设材料选用及要求25kg。承受直角扣件、旋转扣件、对接扣件连接，其材质应符合现行国家标准《钢管〔GB15831〕的规定，并经安全员和材料员外观检测合格并签字同意前方可进场，否则不得使用。丝的等不符合标准的扣件制止使用。钢管上严禁打孔。型钢承受20号工字钢。电梯井筒内落地架的搭设要求、1-DT9、1-DT101-DT3、1-DT41500mm电梯井架体悬挑位置本工程电梯井筒需在施工至肯定楼层标高后进展架体悬挑的电梯井分布见以下图。1-TDT1、1-TDT2、1-TDT3、1-TDT41层～16-6.350m～78.750m，从第8132021.016.4、1-TDT7、1-TDT8、1-TDT9、1-TDT10-6.350m～133.900m，823、282021.021.621.021.07.951-TDT11、1-TDT12、1-TDT13、1-TDT14、1-TDT15、1-TDT16高区电梯，使用楼层为1层～41层，电梯井筒高度范围为-6.350m～189.150m，从第8层开头第一次悬挑，向上分别在第13、18、23、28、33、38层进展悬挑，在悬挑层埋设2020.61-TXFDT1、1-TXFDT2-4～41梯井筒高度范围为-21.600m～188.450m，从第58、13、、28、33、382017.4米、21.021.621.021.021.621.019.9悬挑工字钢平面定位图20面定位详见以下各图。1-TDT1、1-TDT2、1-TDT5、1-TDT6、1-TDT71-TDT3、1-TDT4、1-TDT8、1-TDT9、1-TDT10、1-TXFDT1、1-TXFDT2电梯井筒内工字钢布置图1-TDT11、1-TDT12、1-TDT131-TDT14、1-TDT15、1-TDT161-TDT1、1-TDT2、1-TDT3、1-TDT4400mm，250mm，电梯井筒内两端300mm。悬挑工字钢上脚手架布置本工程电梯井筒内的脚手架材料选用扣件式钢管脚手架，钢管规格为Ф48×3.5mm，900mm，横向间距为工字钢的设以下各图。1-TDT1、1-TDT2、1-TDT5、1-TDT6、1-TDT71-TDT11、1-TDT12、1-TDT131-TDT3、1-TDT4、1-TDT8、1-TDT9、1-TDT10、1-TXFDT1、1-TXFDT2电梯井筒内脚手架布置图1-TDT14、1-TDT15、1-TDT16电梯井内架体及工字钢验算计算参数2021.6Ф480.91.41.51.00kN/m2。0.35kN/m2×2=0.37kN/m2荷载计算脚手架钢管的自重：NG=0.129×21.600=2.789kN1NG=0.700×0.900×1.400=0.882kN2经计算，静荷载标准值：NG=NG+NG=2.789kN+0.882kN=3.671kN1 2NQ=1.00×0.900×1.400=1.260kN不考虑风荷载时，立杆的轴向压力设计值计算公式N=1.2NG+1.4NQ经过计算得到，底部立杆的最大轴向压力N=1.2×3.671+1.4×1.260=6.17kN--8-立杆的稳定性计算〔不考虑风荷载〕N——立杆的轴心压力设计值，N=6.17kN；，i=1.58cm；1.167；u——计算长度系数，由脚手架的高度确定，u=1.800；l——计算长度(m),由公式lkuh确定，l=1.167×1.800×1.500=3.151m；0 0 0——长细比，=l/i=3151/15.8=199.43；0A——立杆净截面面积，A=4.890cm2；——长细比，=l/i=3151/15.8=199.43；0——轴心受压立杆的稳定系数,由长细比l/i的结果查表得到=0.182；0——钢管立杆抗压强度计算值(N/mm——轴心受压立杆的稳定系数,由长细比l/i的结果查表得到=0.182；0——钢管立杆抗压强度计算值(N/mm2)；=6170/(0.182×489)=69.312N/mm2=6170/(0.182×489)=69.312N/mm2，立杆的稳定性计算＜[f]，满足要求。支座反力：F1=F2=1.5P=1.5×6.17=9.255kNM=F1×1.325-P×0.9=9.255×1.325-6.17×0.9=6.71KN.M20I=2370.00cm4W=237.00cm3A=35.578cm2工字钢抗弯计算强度：f=M/1.05W=6.71×106/1.05×237000=26.964N/mm220其中均匀弯曲的受弯构件整体稳定系数，查表《钢构造设计标准》其中均匀弯曲的受弯构件整体稳定系数，查表《钢构造设计标准》(GB50017-2023)附录(GB50017-2023)附录B得到：=2.00，由于b大于0.6，依据《钢构造设计标准》BB′=1.07-0.282/=0.929经过计算得到=6.71×106/(0.929×237000)=30.476N/mm2工字钢的稳定性计算＜[f],满足要求。工字钢的稳定性计算＜[f],满足要求。1.5m，防护门与两侧竖向构造的搭接长度应不200mm示标识。电梯井安全防护门承受钢格栅防护门，由型钢或钢筋焊接加工而成，型钢或钢18mm，其余14mm。电梯井安全门防护示意图电梯井安全防护门应用定型化、工具化的防护门，电梯井洞内的水平向应自负20m150mm。构造施工期间，电梯井内安全防护门应实行固定措施，防止人员开启，开启时--10-必需申请并实行相应的防护措施并准时复原。模板进展一次