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Responses of piles installed by the press-in piling
Published in Malcolm D. Bolton, Akio Kitamura, Osamu Kusakabe, Masaaki Terashi, New Horizons in Piling, 2021
Malcolm D. Bolton, Akio Kitamura, Osamu Kusakabe, Masaaki Terashi
A wall of 500 mm U-shaped steel sheet piles was installed beside Meester Tripkade, Utrecht, Holland as temporary works during the widening of the Utrecht to Blauwkapel railway line during July 1992. Vibration monitoring was carried out by Dutch Railways to assess any disturbance to the foundations of nearby properties. Triaxial geophones were attached to the foundations of three houses 150 mm above ground level, located 7.15 m from the piling line. Local regulation recommended that ground vibrations be limited to 3 mm/s around residential buildings.
Vibration and Blasting Damage
Published in Randall Noon, Introduction to Forensic Engineering, 2020
A seismograph monitor will measure and record ground vibrations. It can often be equipped to measure the air-blast shock wave as well. Normally, the seismograph is placed at a location near the building; best, of course, is placement between the building and the point of origin of the blast. This will cause the seismograph to intercept the ground (or air) vibrations just prior to the point where they reach the building. Seismographs are excellent insurance against unfounded claims.
Keynote lecture: Static and dynamic soil displacements caused by pile driving
Published in Frans B.J. Barends, Application of Stress-Wave Theory to Piles, 2022
Damage to structures from ground vibrations are usually attributed to “dynamic effects”, such as vibration amplification and soil resonance. Existing codes and regulations are generally empirical and based on observations of damaged structures. The results of such investigations are strongly affected by the local soil conditions and these criteria are therefore difficult to apply elsewhere.
Deconvolution of blast vibration signals by wiener filtering
Published in Inverse Problems in Science and Engineering, 2018
Rock blasting has been widely used in mining engineering and infrastructure constructions. The explosives in blasts will transfer energy into the ground and cause vibrations within a certain distance. The generated ground vibrations can be a hazard and can cause risks to nearby houses or other structures. Therefore, it is of great importance to analyse and predict ground vibrations and to integrate the analysis into more efficient blast designs. The signature hole analysis is a method which is used to predict and control blast ground vibrations. Conventional signature hole method is based on the following assumptions [1]:All holes are detonated at the same location which makes the wave propagation path same for every hole;All holes have the same explosive charge type and weight and have the same explosive-rock interaction. That is, the explosive energy for every hole has the same proportion which transforms into seismic energy in the earth.The first two assumptions lead to the third one: all the holes produce the identical signatures when measured at the same location.
Impedance functions of a strip foundation in presence of a trench
Published in European Journal of Environmental and Civil Engineering, 2022
Ground vibrations may originate from vibrating machines (Beskos et al., 1986; Leung et al., 1991), traffic (Persson et al., 2014, 2016; Richart et al., 1970; Saikia, 2014), blasting (Beskos et al., 1986), construction activities (Saikia, 2014) and earthquake (Shrivastava & Kameswara Rao, 2002). Man induced vibrations, in particular, are a very important engineering problem, especially in densely populated urban or semi-urban areas. Excessive vibration may cause malfunctioning or disruption of high-precision instruments or facilities, damage to structures which are adjacent to the source of vibration or even annoyance to the residents of an area (Saikia, 2014).