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首页> 外文会议>Society for Machinery Failure Prevention Technology Meeting; 20050418-21; Virginia Beach,VA(US) >IMPLEMENTATION OF AMBIENT RESPONSE MONITORING INSTRUMENTATION FOR A BRIDGE ASSESSMENT TEST BED
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IMPLEMENTATION OF AMBIENT RESPONSE MONITORING INSTRUMENTATION FOR A BRIDGE ASSESSMENT TEST BED

机译：桥梁评估床环境响应监测仪的实现

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摘要

The initial hardware and instrumentation implementation phase of a permanent ambient response (output-only) bridge monitoring system is describe in this paper. The system was installed on a short two-span monolithic slab reinforced concrete bridge and consisted of a distributed accelerometer network connected in a star configuration to a local field acquisition system. Valid high speed point-in-time response data was automatically recorded three times per day and stored on-site. A remote off-site personal computer was used to automatically collect data for further processing and storage from the field instrumentation via an analog modem connection. The point-in-time datasets consisted of multiple near synchronous (burst mode) acceleration time traces from twenty-eight single and bi-axial response locations on the underside of the bridge deck. Experimental and numerically simulated dynamic characteristics of the bridge are also presented along with selected response characteristics collected over a three month startup period.
机译：本文描述了永久性环境响应（仅输出）桥梁监控系统的初始硬件和仪器实现阶段。该系统安装在短的两跨整体式平板钢筋混凝土桥上，由以星型配置连接到本地现场采集系统的分布式加速度计网络组成。每天自动记录有效的高速时间点响应数据3次，并在现场进行存储。使用远程异地个人计算机通过模拟调制解调器连接从现场仪器中自动收集数据，以进行进一步处理和存储。时间点数据集由来自桥面板下侧28个单轴和双轴响应位置的多个接近同步（突发模式）加速时间轨迹组成。还介绍了桥梁的实验和数值模拟动态特性，以及在三个月的启动期间收集的选定响应特性。

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