施工现场临时用水、用电施工方案(精)

目录一、编制依据„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„二、工程概况„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„三、临水、临电的设置原则、接驳电和设置形式„„„„„„„„„„„„„„„„„„四、现场勘察„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„五、临水设计方案„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„1．施工用水布置方案„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„2．施工用水量的计算„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„3．管网的布置方案„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„六、临电设计方案„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„1．施工机械、设备选择、布置„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„2．负荷计算„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„3．配电线路设计„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„4．配电箱各开关箱设计„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„5．供电系统图及各开关设计„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„6．接地和接地装置设计„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„7．防雷设计8．安全用电和电气防火措施七、附图一：施工临时用电供电系统图„„„„„„„„„„„„„„„„„„„„„„„„„附图二：接地体埋设示意图„„„„„„„„„„„„„„„„„„„„„„„„„„„„„„附图三：地下室施工、消防、水、电总平面布置图„„„„„„„„„„„„„附图四：零板以上群楼施工、消防及水、电总平面布置图„„„„„„„„„„„1222333666811171820222325262728施工现场临时用水、用电施工方案一、编制依据本工程临时用水、用电的设计依据主要有以下的规范规程和资料：二、工程概况工期紧，为了能够保证工期和进度，通过正确的计算和合理的估算，以达到高效节能的目的。三、临水、临电的设置原则、接驳电本工程的施工临时用电用水是本着“安全第一、预防为主”的设置原则。现场电房位置设置在东南角,临时用水的接驳点位均在西北角。根据现场全方位的实际情况，地下室施工的临时用电的电线、电缆均采用PVC套管埋地暗敷，各分级电箱相相应进行配电。现场的临时用水沿场地的四周进行布设；施工完地下室后，±0.00以上结构的施工用电线路需结合现场再进行架空布设。四、现场勘察鉴于现场的施工设备比较分散，临时用电的布线采用PVC套管埋地敷设和各分级电箱相结合进行配电。临时用水的接驳点设在西北角，另外施工现场较大，管线分两个方向沿基坑顶部的钢管栏杆安装。五、临水设计方案1.施工用水布置方案现场临水用水主要包括以下几个方面：a.生产用水b.机械用水c.现场生活用水d.生活区生活用水e.消防用水本工程根据业主提供的主供水管接至现场西北角。施工用水采用DN100PVC管从总管口接入后，分二个流向，其一向东面和北面供水，其二从东面向南面供水。每幢主体塔楼取用DN100镀锌钢管作消防供水，每层设置一个DN65单口消火栓配置消防水枪、水带，并配置干粉灭火器。2.施工用水量的计算a.施工生产用水量生产用水包括工程施工用水、施工机械用水，施工中主要考虑砼养护浇水和模板冲洗用水，取下式进行计算：q1=K1ΣQ1N1/(T1t×K2/(8×3600其中：K1=1.1；T1=365天；t=2；K2=1.5。ΣQ1N1/(T1t=62472Lq1=1.1×(62472×1.5/(8×3600=3.6L/S。N1及Q1取值表b.施工现场机械用水量q2=K1ΣQ2N2×K3/(8×3600其中：K1=1.1；Q2=1；N2=250；K3=2q2=1.1×1×250×2/(8×3600=0.02L/Sc.施工现场生活用水量q3=P1N3K4/(t×8×3600其中：P1——高峰期施工人数，P1=500人；N3——施工现场施工人员用水定额，N3=30（L/人．班）K3——用水不均衡系数，取K3=1.3。t——每天工作班数，t=2q3=500×30×1.3/（2×8×3600）=0.34L/Sd.生活区生活用水量q4=P2N4K4/（24×3600）其中：P2——施工现场居住人数，P2=600人。N4——施工现场居住人员生活定额，N4=100（L/人·天）。K4——用水不均衡系数取K4=2。q4=600×30×2/（24×3600）=0.42L/Se.消防用水因施工现场面积在5ha内，所以取：q5=10L/S由于q1+q2=3.6+0.02+0.34+0.42=4.38L/S＜q5=10L/S，不能满足消防要求。故施工供水为：Q=q5×K6=10×1.1=11L/S其中：K6为管网漏水的损失系数，取1.1。f.供水管计算D=10004⨯⨯VQπ其中：V为管网中水流速度，取经济流速1.5M/S。则D=10005.114.3101146⨯⨯⨯⨯=96.7mm选用DN100镀锌钢管做临时用水干管，同时满足消防用水的要求。所以建设单位提供的水管接入口管径需大于DN100。3.管网的布置方案临时用水的干管取DN100镀锌钢管从业主指定的管网接出并安装总计水表，沿场地四周半环形布设，用水支管选用DN75、DN50、DN25PVC水管。每幢主体塔楼供水取用DN75镀锌钢管作干管，用型号BG-20-100加压泵加压。施工用水管网布置详见附地下室施工平面布置图和±0.00以上结构施工平面布置图。六、临电设计方案1、施工机械、设备选择、布置我司为临时用电应急需要，配备两台200KW发电机作备用，在垂直机械运输设备方面，拟安装2台型号为SC200/200的施工电梯，其设备用量为：30kw/台，2台塔吊，45KW/台。计算供电线路所需要的负荷。2.负荷计算按照需用系数法确定三相用电设备的有功计算负荷、Pjs=KX．PS（Kw）其中：KX——需用系数，PS——设备总容量。用电设备的无功计算负荷、用电设备的视在计算负荷。前期总负荷计算表（表一）本工程前期各种系数取值：COSΦ=0.85，k1=0.6，k2=0.5，k3=0.8P1=1077KW，P2=110KW，P3=60KW将上述数值代如计算公式可得：P=1.05*(k1*P1/COSΦ+K2*P2+k3P3=1.05*(0.6*1077/0.85+0.5*110+0.8*60=906.40KVA。后期总负荷计算表（表二）本工程各种系数取值：COSΦ=0.85，k1=0.6，k2=0.5，k3=0.8P1=466.2KW，P2=357KW，P3=60KW将上述数值代如计算公式可得：P=1.05*(k1*P1/COSΦ+K2*P2+k3P3=1.05*(0.6*466.2/0.85+0.5*357+0.8*60=604.95KVA施工现场总的用电负荷见表一所示。因此，总的视在计算负荷Sjs=906.40（KVA）考虑到目前建设方提供的供电功率只有600KVA(四五组团共用,其中四团现时需要350KVA才能满足使用,仅余250KVA供五组团。从前、后期的视在计算负荷可见600KVA的供电功率均不能满足用电负荷。所以前期桩机施工高峰期间电量不足,最少需增加400KVA供电量,或配增2台200KW发电机组供电（用电需用系数计算法时考虑到所有的设备一般不会同时启动，且电流也不会同时出现，计算时已经留有余地，焊机的功率110KW已忽略不计）。而后期施工的视在用电功率为604.95KVA,因此若前期不增装变压器时,即须要增加一台200KW的发电机才能满足后期施工的正常用电须求。3.导线（总干线）截面的选择负荷采用需用系数计算法计算。由于对焊机的使用在后期结构施工,或在使用时考虑错开用电高峰期，而施工电梯主要为装饰装修阶段使用，因此计算时不考虑对焊机电流对导线截面选择的影响。a.1＃线路配线设计前期1#线路为桩机、潜水泵和钢筋加工场供电线路，且配电房配有200KVA变压器1台，用电负荷按变压器最大输出功率计算，回路平均配电流为600A，计算如下：I总=P总（KVA）÷V三相额定电压=200×1000÷380=526.3(AN回路=I总÷I=526.3÷600≈0.88（回路）后期1#线路由钢筋加工机具、垂直运输设备、竖向设备的供电线路，其总的用电负荷如表三。1#路线后期总负荷计算表（表三）因此，总的视在计算功率本工程各种系数取值：COSΦ=0.85，k1=0.6，k2=0.5，k3=0.8P1=144KW，P3=60KW将上述数值代如计算公式可得：P=1.05*(k1*P1/COSΦ+k3P3=1.05*(0.6*144/0.85+0.8*60=157.13KVA总的视在计算电流Ijs=Sjs.1000/（1.732UecosΦ）=157.13×1000/（1.732×380×0.75）=318.32（A）经前期计算查建筑电气设计手册，VV120mm2的聚氯乙烯绝缘塑料铜芯电线，架空敷设的载流量为375A，其大于318.32A,故选用VV120mm2的聚氯乙烯绝缘塑料铜芯电线做相线，工作零线和保护零线选用70mm2的聚氯乙烯绝缘塑料铜芯电线。a、1＃线路从东南角绕南往西南角位置采用VV4×120mm2+1×70mm2配线埋地配PVC管敷设，前期供冲孔桩机、泥浆泵、焊机等施工设备使用；后期线路同样采用前期线路，供1台施工电梯、1台塔机、钢筋加工机械、。b、2#线路从基坑东南角方向往东北向钢筋加工场采用VV4×120mm2+1×70mm2配线埋地配PVC管敷设。前期供电焊机、锤击桩机、水泵；后期泵机、对焊机、电渣焊机等使用。前期和后期照明用电量经计算选用前期用电量的10%为照明用电量，故选择BV25mm2聚氯乙烯绝缘导线并采用电杆架空布置或配PVC管埋地敷设。C、3#线路从新增电源（或发电机组）采用VV4*120mm2+1*70mm2的聚氯乙烯绝缘塑料铜芯电线埋地配PVC管敷设至北向中间位，前期供桩机、泥浆泵、焊机使用。后期供1台塔吊、1台施工电梯、焊机、加工机械。4.现场平面设计、布置及线路走向现场用电共4路干线（包括发电机组输出）。1＃线路前、后期从配电房引出VV4*120mm2+1*70mm2的聚氯乙烯绝缘塑料铜芯电线至东北角，采用PVC管套埋地敷设。2#线路前、后期从配电房引出VV4*120mm2+1*70mm2的聚氯乙烯绝缘塑料铜芯电线至西南角位置，采用PVC管套埋地敷设。3#线路前、后期从发电机组VV4*120mm2+1*70mm2的聚氯乙烯绝缘塑料铜芯电线至北向中间位，采用PVC管套埋地敷设。照明线路前期、后期从配电房2引出VV4*25mm2+1×16mm2聚氯乙烯绝缘导线至现场照明用。按JGJ46—88规范布设，主体塔楼施工出入口和楼梯间供电采用36V电压供电。上述埋地敷设的线路采用塑料套管。5.配电箱各开关箱设计（1）电器开关前期配电柜开关电器及导线截面选择（表四）后期配电柜开关电器及导线截面选择（表五）（2）配电箱a.设置原则三级设置即总配电箱、分配电箱、开关箱、照明配电和动力配电分设。分配电箱和开关箱的装设满足：（a）干燥、通风、常温；（b）无有毒有害可燃气体液体等介质；（c）无外力撞击和强烈振动；（d）无液体浸溅；（e）无热源烘烤；（f）防雨、防尘；（g）周围空间应保证有足够的工作空间和通道。b.配电箱的选择：配电箱采用规定的标准箱。c.配电箱的安装：d.配电箱固定在坚实、稳定的支架上，安装牢固，不得歪。导线进出口处配电箱内所有正常不带电的金属部件均应作可靠的保护接零，保护零线采用绿黄双色线，并通过专用接线端子板，箱内的连接导线采用绝缘良