防雷接地工程施工方案

杭州铁路东站枢纽西广场机电安装工程防雷接地工程专项施工方案编制：审核：审批：中建三局建设工程股份有限公司（沪）2011年3月2日杭州铁路东站西广场·机电安装工程防雷接地工程施工方案中建三局建设工程股份有限公司（沪）-1-目录目录····································································································-1-1工程概述·······························································································-2-1.1工程概况·······················································································-2-1.2编制依据·······················································································-2-1.3设计要求·······················································································-3-2施工部署·······························································································-5-2.1人员组织结构·················································································-5-2.2施工进度计划·················································································-5-2.3劳动力计划····················································································-6-2.4施工机具·······················································································-6-2.5施工材料计划·················································································-6-3施工方案·······························································································-7-3.1施工流程·······················································································-7-3.2接地装置安装·················································································-7-3.3接地端子预留················································································-10-3.4防雷引下线安装·············································································-12-3.5均压环及门窗接地的安装································································-12-3.6接地电阻测试箱的安装···································································-14-3.7接闪器施工···················································································-15-3.8变配电房及弱电机房接地·································································-16-3.9建筑物等电位连接·········································································-16-4.0接地电阻测试················································································-16-4质量保证措施························································································-16-4.1质量及工艺标准·············································································-16-4.2质量通病及防治措施······································································-18-4.3质量保证措施················································································-19-5安全及文明施工·····················································································-19-5.1安全施工······················································································-19-5.2文明施工······················································································-20-杭州铁路东站西广场•机电安装工程防雷接地工程施工方案中建三局建设工程股份有限公司（沪）-2-1工程概述1.1工程概况工程建设概况一览表工程名称杭州铁路东站枢纽西广场区块配套设施项目工程地址杭州市江干区新风路交新井路、新塘路建设单位杭州市城东新城建设投资有限公司勘察单位浙江省工程物探勘察院设计单位中南建筑设计院股份有限公司监理单位浙江明康工程咨询有限公司质量监督部门杭州市质监站总包单位中建三局建设股份有限公司合同工期914日历天建筑面积428600㎡合同工程投资额140581.8088元（建安总合同额）建筑高度/层数C座、D座屋面檐口最高处标高均为23.58米。。工程主要功能或用途以交通集散为核心，以整合国铁、地铁、公交、出租车和社会车辆等多种交通方式的换乘，实现无缝衔接的交通综合体1.2编制依据1.2.1业主下发施工图及相关文件杭州铁路东站枢纽西广场区块配套设施项目招标文件及答疑文件,电气工程施工图纸；业主、设计、监理和施工单位四方签认的图纸会审记录。1.2.2我国现行的法律法规、规范、标准及图集序号名称编号1《中华人民共和国建筑法》国家法律杭州铁路东站西广场•机电安装工程防雷接地工程施工方案中建三局建设工程股份有限公司（沪）-3-2《建设工程质量管理条例》国家法规3《建筑电气工程施工质量验收规范》GB50303-20024《建筑物防雷设施安装》07D501—15《等电位联结安装》02D501—26《利用建筑物金属体做防雷及接地装置安装》03D501—37《接地装置安装》03D501—41.3设计要求1.3.1防雷设计（1）本建筑按二类防雷建筑物设计;防雷、电气、消防、弱电和信息系统共用接地装置。接地电阻要求不大于1欧姆。（2）接闪器：沿屋顶、女儿墙四周用￠12镀锌圆钢敷设避雷带做接闪器，网格不大于10m×10m或12m×8m。突出屋面的金属物体（如铁爬梯、水管、透气管等），均与就近的避雷带相连。突出屋面的非金属物体（如烟囱等），加装独立小针，并与就近的避雷带相连。（3）防侧雷击：建筑物应每层利用周边连通之圈梁钢筋作均压环；并将地面45米以上外墙上的金属门窗、金属栏杆、幕墙金属构架等与均压环相连接。（4）防雷引下线：利用外墙柱内2根不小于D16的钢筋为一组作引下线。引下线间距不大于18米，上与避雷带，下与基础基地装置连接。（5）防雷电波侵入措施：所有进入建筑物的电缆金属外皮、钢管及各种金属管道应在进出口处就近与接地装置连接。垂直敷设的金属管道上下端与防雷系统连接。防雷击电磁脉冲保护措施：变压器高低压侧各相装设避雷器；各层主配电箱以及重要设备配电箱，屋顶的配电箱设浪涌保护器，并与防雷分界处作等电位连接；弱电机房配电箱以及进线处设浪涌保护器。杭州铁路东站西广场•机电安装工程防雷接地工程施工方案中建三局建设工程股份有限公司（沪）-4-（6）接地装置:利用基础内钢筋作接地装置，利用结构柱、地梁、桩基、底板等内部主筋连通作自然接地体，结构基础钢筋（每处直径不小于16mm，根数不少于4根）。1.3.2接地设计(1)本工程采用共用接地系统，即变压器中性点接地、保护接地及弱电系统接地等共用防雷基础接地装置。接地电阻不大于1欧姆。(2)大楼内电气线路采用TN-S接地系统。在变电所内设置总接地点，用100*100*10的预埋钢板通过柱内主筋与基础钢筋连接。变电所内采用40*4镀锌扁钢敷设接地干线，于墙上距地300mm明敷。接地干线与柱内预埋的接地连接钢板相焊接。配电柜底座槽钢、变压器外壳、低压PE干线均应与接地干线连接，变电所内设接地端子箱，变压器中性点接地单独采用40*4镀锡扁铜引至接地端子箱并与端子板联接。等电位接地端子板于墙上距地板面300mm安装。做法详国标D563。(3)各弱电系统工作接地分别采用绝缘铜芯线引至接地端子箱。通过接地端子箱与基础钢筋连接。(4)等电位联结：建筑物内所有设备外露可导电部分和装置外可导电部分均应可靠接地（PE），等电位联接作法详国标《等电位联接安装02D501-2》，具体的等电位联结设计部位及要求：（1）建筑物内所有管道井均设置接地端子；（2）电梯机房、强弱电机房以及电梯井、强弱电竖井均设置接地端子；（3）用电设备集中的场所（如变配电间、水暖设备用房、配电间、弱电机房等）均设置接地端子，以供设备、SPD等电位联结用；（4）有水暖管道的安装通道设置接地端子；（5）接地预留端子选用国家定型产品，离地200mm明装，其与杭州铁路东站西广场•机电安装工程防雷接地工程施工方案中建三局建设工程股份有限公司（沪）-5-结构主钢筋引下线的连接采用40x4镀锌扁钢焊接连通；（6）消防监控中心、弱电中心机房、售票机房等电子信息系统机房的等电位联结采用M型结构设计，电子信息设备除连接PE线作为保护接地外，还采用两条不同长度的导线以最近距离与等电位联结网络连接。机房内所有设备的金属外壳、金属线槽、各类金属管道、建筑物金属结构、防静电地板等均须进行等电位联结并接地。（7）接地电阻检测本项目每栋建筑物均设置不少于2处接地电阻测试端子板，接地电阻测试端子板在室外离地0.5米嵌墙暗装，与建筑装饰相一致，并有可靠的防腐措施和明显的接地标志。2施