地面沉降影响下埋地燃气管道的应力监测与分析
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摘要
对在建的上海中心大厦附近某段埋地燃气管道装设应力监测系统,采用电阻应变传感器,结合静态应力采集和GPRS传输系统,实现了管道应变数据的自动采集及无线远传。对长达9个月的监测数据进行分析,得出随着建筑施工的不断进展,由于地面沉降,使管道受力存在明显的变化关系,需对燃气管道进行长期应力监测分析。
An on-site stress monitoring system was installed on buried gas pipes located in the neighboring area of Shanghai Center Tower. The continuous online and real-time monitoring of stress changes were realized by means of data acquisition and GPRS transmission. Field test validated the effectiveness of the designed system. Preliminary analysis of data within 9 months showed that long-time monitoring and analysis should be needed because the ground settlement made pipeline stress changed obviously with the construction progress.
An on-site stress monitoring system was installed on buried gas pipes located in the neighboring area of Shanghai Center Tower. The continuous online and real-time monitoring of stress changes were realized by means of data acquisition and GPRS transmission. Field test validated the effectiveness of the designed system. Preliminary analysis of data within 9 months showed that long-time monitoring and analysis should be needed because the ground settlement made pipeline stress changed obviously with the construction progress.
引文
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[5]谢太和.安全控制原理与测试技术[M].广州:华南理工大学教材供应中心.2002.
[2]杜艳,谢英,王子豪,等.天然气管道事故分析[J].管道技术与设备.2009(2):16-18,37.
[3]唐益群,崔振东,王兴汉,等.密集高层建筑群的工程环境效应引起地面沉降初步研究[J].西北地震学报.2007,29(2):105-108.
[4]陆衍,李勤奋,过仲阳,等.上海地面沉降自动监测及信息系统[J].华东师范大学学报(自然科学版).2002(4):63-68.
[5]谢太和.安全控制原理与测试技术[M].广州:华南理工大学教材供应中心.2002.
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