MEASURING MOVEMENTS OF ENGINEERING STRUCTURES

MOVEMENTS OF ENGINEERING STRUCTURES CAN BE MEASURED WITH SURVEYING EQUIPMENT FROM STABLE POSITIONS OUTSIDE THE STRESS FIELD OF THE STRUCTURE. SIX EXAMPLES OF FIELD OBSERVATIONS ARE GIVEN WHICH RANGE FROM SETTLEMENT MEASUREMENTS OF BUILDINGS MADE WITH A PRECISION LEVEL TO THREE-DIMENSIONAL MOVEMENTS OF POSITIONS ON THE FACE OF A ROCKFILL DAM OBTAINED BY MEASUREMENTS MADE WITH ELECTRONIC DISTANCE MEASURING INSTRUMENTS. EMPHASIS IS PUT ON THE IMPORTANCE OF USING REFERENCE MONUMENTS WHICH ARE NOT AFFECTED BY SURFACE GROUND MOVEMENTS AND OF ACCURATE LOCATION OF INSTRUMENTS AND THEIR TARGETS. EXAMPLES ARE GIVEN OF MONUMENT DESIGN, AND THE STABILITY OF THE MONUMENTS IS ILLUSTRATED BY MEASUREMENTS MADE EACH MONTH FOR A YEAR OF 90 LENGTHS OF 50M BETWEEN MONUMENTS. THE MOVEMENTS OF RESERVOIR EMBANKMENT DAMS MEASURED BY ELECTRONIC DISTANCE MEASURING INSTRUMENTS ARE COMPARED WITH THOSE MEASURED BY AN INVERTED PENDULUM AT ONE DAM, AND BY TRIANGULATION AND PRECISE LEVELLING AT ANOTHER DAM. /AUTHOR/

• Corporate Authors:

  Building Research Establishment

  Bucknalls Lane, Gorston
  Watford WD2 7JR, Hertfordshire,   England 
• Authors:
  • Penman, A D
  • CHARLES, J A
• Publication Date: 1971-11

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: 16 p.
• Serial:
  • Issue Number: 3

Subject/Index Terms

• TRT Terms: Alternatives analysis; Distance measuring equipment; Electronic equipment; Measuring instruments; Rockfill dams; Settlement (Structures); Triangulation
• Uncontrolled Terms: Structural stability
• Old TRIS Terms: Levels /instruments/
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00230418
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: TRIS
• Created Date: Feb 11 1973 12:00AM