GB50497-2019：建筑基坑工程监测技术标准

GB50497-2019······1

1 总则······12

2 术语······13

3 基本规定······15

4 监测项目······19

4.1 一般规定······19

4.2 仪器监测······19

4.3 巡视检查······21

5 监测点布置······24

5.1 一般规定······24

5.2 基坑及支护结构······24

5.3 基坑周边环境······27

6 监测方法及精度要求······29

6.1 一般规定······29

6.2 水平位移监测······30

6.3 竖向位移监测······32

6.4 深层水平位移监测······34

6.5 倾斜监测······34

6.6 裂缝监测······35

6.7 支护结构内力监测······36

6.8 土压力监测······36

6.9 孔隙水压力监测······37

6.10 地下水位控制监测······38

6.11 锚杆轴力监测······38

6.12 土体分层竖向位移监测······38

6.13 坑底隆起监测······39

6.14 爆破振动监测······39

7 监测频率······41

8 监测预警······44

9 数据处理与信息反馈······49

附录A 水平位移、竖向位移监测日报表······51

附录B 深层水平位移监测日报表······52

附录C 围护墙内力、立柱内力及土压力、孔隙水压力监测日报表······53

附录D 支撑轴力、锚杆轴力监测日报表······54

附录E 地下水位、地表竖向位移、分层竖向位移、坑底隆起监测日报表······55

附录F 裂缝监测日报表······56

附录G 巡视检查日报表······57

本标准用词说明······59

引用标准名录······60

附：条文说明······61

1 总则······65

2 术语······68

3 基本规定······69

4 监测项目······75

4.1 一般规定······75

4.2 仪器监测······75

4.3 巡视检查······80

5 监测点布置······82

5.1 一般规定······82

5.2 基坑及支护结构······83

5.3 基坑周边环境······85

6 监测方法及精度要求······88

6.1 一般规定······88

6.2 水平位移监测······89

6.3 竖向位移监测······92

6.4 深层水平位移监测······93

6.5 倾斜监测······94

6.6 裂缝监测······94

6.8 土压力监测······94

6.9 孔隙水压力监测······95

6.11 锚杆轴力监测······95

6.12 土体分层竖向位移监测······96

6.13 坑底隆起监测······96

6.14 爆破振动监测······96

7 监测频率······98

8 监测预警······100

9 数据处理与信息反馈······106