工地噪声实时监测仪器sAx£Îrt}Abbs.3c3t.comeûºÊ»
sAx£Îrt}Abbs.3c3t.comeûºÊ» sAx£Îrt}Abbs.3c3t.comeûºÊ» 建筑施工噪声标准：sAx£Îrt}Abbs.3c3t.comeûºÊ» 为贯彻《中华人民共和国环境保*》和《中华人民共和国环境噪声污染防治条例》。控制城市环境噪声污染，特制定本标准。sAx£Îrt}Abbs.3c3t.comeûºÊ»
1、适用范围sAx£Îrt}Abbs.3c3t.comeûºÊ» 本标准适用于城市建筑施工期间施工场地产生的噪声sAx£Îrt}Abbs.3c3t.comeûºÊ»
2、标准值sAx£Îrt}Abbs.3c3t.comeûºÊ»
2.1 不同施工阶段作业噪声限值列于下表。sAx£Îrt}Abbs.3c3t.comeûºÊ» 等效声级LAeq[dB(A)]sAx£Îrt}Abbs.3c3t.comeûºÊ»
施工阶段 主要噪声源 噪声限值sAx£Îrt}Abbs.3c3t.comeûºÊ» 昼间 夜间sAx£Îrt}Abbs.3c3t.comeûºÊ» 土石方 推土机、挖掘机、装载机等 75 55sAx£Îrt}Abbs.3c3t.comeûºÊ»
打桩 各种打桩机等 85 禁止施工sAx£Îrt}Abbs.3c3t.comeûºÊ» 结构 混凝土搅拌机、振捣棒、电锯等 70 55sAx£Îrt}Abbs.3c3t.comeûºÊ»
装修 吊车、升降机等 65 55sAx£Îrt}Abbs.3c3t.comeûºÊ»
2.2 表中所列噪声值是指与敏感区域相应的建筑施工场地边界线处的限值。sAx£Îrt}Abbs.3c3t.comeûºÊ»
2.3 如有几个施工阶段同时进行，以高噪声阶段的限值为准sAx£Îrt}Abbs.3c3t.comeûºÊ» sAx£Îrt}Abbs.3c3t.comeûºÊ» 噪声的衰减因素：sAx£Îrt}Abbs.3c3t.comeûºÊ» 1.空气的吸收sAx£Îrt}Abbs.3c3t.comeûºÊ» 2.地面的吸收sAx£Îrt}Abbs.3c3t.comeûºÊ» 3.气温的影响sAx£Îrt}Abbs.3c3t.comeûºÊ» 4.风速的影响sAx£Îrt}Abbs.3c3t.comeûºÊ» 5.声屏障的衰减sAx£Îrt}Abbs.3c3t.comeûºÊ» sAx£Îrt}Abbs.3c3t.comeûºÊ» sAx£Îrt}Abbs.3c3t.comeûºÊ» sAx£Îrt}Abbs.3c3t.comeûºÊ» 工地噪声监测仪技术参数sAx£Îrt}Abbs.3c3t.comeûºÊ»
测量范围：30～130dB(A)sAx£Îrt}Abbs.3c3t.comeûºÊ»
频率范围：20Hz-12.5kHzsAx£Îrt}Abbs.3c3t.comeûºÊ»
频率计权：A（计权）sAx£Îrt}Abbs.3c3t.comeûºÊ»
时间计权：F（快）sAx£Îrt}Abbs.3c3t.comeûºÊ»
输出接口： 4~20mA/RS232sAx£Îrt}Abbs.3c3t.comeûºÊ»
灵 敏 度：电压41.5mV/dB; 电流0.133mA/dBsAx£Îrt}Abbs.3c3t.comeûºÊ»
最大误差：0.5dBsAx£Îrt}Abbs.3c3t.comeûºÊ»
供sAx£Îrt}Abbs.3c3t.comeûºÊ»
电：220V市电或24V DC sAx£Îrt}Abbs.3c3t.comeûºÊ»
尺寸大小：200mm×104mm×50mmsAx£Îrt}Abbs.3c3t.comeûºÊ»
外形材质：铝合金外壳，坚固防腐sAx£Îrt}Abbs.3c3t.comeûºÊ»
sAx£Îrt}Abbs.3c3t.comeûºÊ» sAx£Îrt}Abbs.3c3t.comeûºÊ»