Response of Cracks to Construction Vibrations and Environmental Effects
Publication: Geotechnical Engineering for Transportation Projects
Abstract
This paper summarizes micro-inch response of cosmetic cracks in a typical slab-on-grade ranch style house to both construction equipment-induced vibration and environmental (weather) effects. This structure was instrumented, and its response studied as part of the development of an Autonomous Crack Measurement (ACM) system. ACM systems are intended to record—with a single sensor—micro-inch crack displacements from both long-term environmental changes and transient construction vibrations for comparison in an understandable fashion. Ground motions were measured with velocity transducers, and micro-inch crack displacements were measured with LVDT displacement sensors. Construction within 14 m (45 ft) of the house involved trackhoe excavation fora 10 x 12 ft. reinforced concrete box culvert, chain trencher excavation for an 8-inch water service line, and vibratory compaction of trench backfill and granular sub-grade. As with many other studies of this nature, it was found that the weather induced crack response far exceeded that produced by construction vibrations even when produced by vibratory rolling within 3 m (10 ft) of the structure.
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Copyright
© 2004 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Buildings
- Construction engineering
- Construction equipment
- Construction management
- Continuum mechanics
- Cracking
- Displacement (mechanics)
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Equipment and machinery
- Fracture mechanics
- Motion (dynamics)
- Probe instruments
- Residential buildings
- Solid mechanics
- Structural engineering
- Structural mechanics
- Structures (by type)
- Vibration
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