加坡环线地铁工程的设计施工技术与坍塌应急处理案讲座课件PS.pptVIP

Wire Connection of Auto Logger * EL Tilt Monitoring * THANK YOU! SOIL FOUNDATION PTE LTD * * * * * * * * * * * * * * * * * * * Real Time EL Sensor Monitoring For LTA C854 at Cluny Park Road * Purpose of Instrumentation Instrumentation Monitoring Works can be carried out to: Verify design assumptions Assess effects of construction methods Assess the need for supplementary preventive or remedial works Provide a record of performances for the authority Provided confirmation to design data * Monitoring Intervals Real-Time Monitoring Instruments: Instrument can be automated by connecting to the data logger system and real time processing / visualization software. The time interval for data logging and retrieval will be set according to construction requirements. * Monitoring Results The monitoring results presented in the real time display and report includes: Rotational tilting of structures Differential Settlement of structures * Location Plan * House No. 81 83 Side View EL Beam Sensor EL Tilt Sensor * House No. 81 83 Front View EL Beam Sensor EL Tilt Sensor * House No. 85 87 Front View EL Tilt Sensor * House No. 89 91 Front View EL Tilt Sensor * Serene House Eyeshot EL Tilt Sensor * French Embassy Eyeshot EL Tilt Sensor * Cluny Court Eyeshot (Shop-Houses) EL Beam Sensor EL Tilt Sensor * EL Tilt Sensor EL tiltmeters are used to monitor changes in the inclination of a structure. They provide an accurate history of movement and early warning of potential structural damage. The narrow-angle EL tiltmeter (shown with cover removed) measures tilt over a range of +/- 40 arc minutes. It can detect changes as small as one arc second (0.00028 degree). It is supplied with a two-point mounting bracket for use with groutable anchors. * EL Beam Sensor The beam sensor consists of an electrolytic tilt sensor attached to a rigid metal beam. The tilt sensor is a precision bubble-level that is sensed electrically as a resistance bridge. The bridge circuit outp