Inclination correction of the parallel seismic test for pile length detection

Ni, Sheng Huoo; Yan, Huaxiang; Zhou, Xian Min; Lo, Kuo Feng

doi:10.1016/j.compgeo.2010.10.002

Cited by 16 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2(b). This is the principle of conventional parallel seismic tests (Liao and Roesset, 1995;Liao et al, 2006;Huang and Chen, 2007;Lo et al, 2009;Ni et al, 2011;Huang and Ni, 2012;Niederleithinger, 2012;Lu et al, 2013;Zhang and Chen, 2013). Evidently, the slopes of the two fitting lines are affected by the velocity of the P waves in the pile and the velocity of the P waves in the soil below the pile tip.…”

Section: Introductionmentioning

confidence: 96%

PS wave based parallel seismic test for pile length assessment

Song

Chen

et al. 2016

Soils and Foundations

View full text Add to dashboard Cite

This paper presents an improved method for conducting parallel seismic tests to detect the unknown length and integrity of piles. The method involves the use of PS waves rather than the PP waves normally applied in conventional parallel seismic tests. Analytical solutions are derived for the t-d relationships of the first arrivals of the PS waves in homogeneous and layered soil conditions. Finite element models are also developed to simulate the waves generated by a vertical impact on the top of a pile under these two ground conditions for the purpose of validating the analytical solutions. The study indicates that the proposed method is viable and has several advantages over conventional parallel seismic tests.

show abstract

Section: Introductionmentioning

confidence: 96%

PS wave based parallel seismic test for pile length assessment

Song

Chen

et al. 2016

Soils and Foundations

View full text Add to dashboard Cite

show abstract

“…A correction equation based on the wave velocity and pile-borehole distance has been proposed to improve the estimation accuracy [20]. An equation was also proposed to compensate for the borehole inclination [21]. A mathematical algorithm that considers the soil layers and borehole inclination was put forward [22], and the ray-tracing method was used to identify defects in a pile using the PS method [23].…”

Section: Introductionmentioning

confidence: 99%

Integrity Testing of a Platform‐Pile System Using a Sensor Array and Wavenumber Domain Analysis

Lin

2022

Advances in Civil Engineering

View full text Add to dashboard Cite

Appropriate impact and sensor locations must be chosen in pile integrity tests to prevent three-dimensional effects caused by the torsional and flexural modes. The three-dimensional characteristics cause high-frequency interference, especially in bridge and wharf piles. A method is required to minimize the high-frequency interference without reducing the accuracy of the pile integrity test. A multivelocity integrity test method is proposed based on a sensor array and frequency-wavenumber (FK) domain analysis to eliminate high-frequency interference and reduce the errors in the output of integrity tests of platform-pile systems. FK filtering is performed to eliminate the spatial alias frequency and separate the upward and downward wavefield and the vibration modes in an integrity test of a platform-pile system. The optimum sensor location to minimize the influence of interference signals is at the bending plane relative to the impact location. Using a sensor array reduces the influence of the sensor location on the test results and minimizes the requirements for determining the location of the excitation point and sensors in the traditional low-strain integrity testing (LST) method, thereby improving the applicability of this method.

show abstract

“…Lo et al (2009) have described the experimental procedure for determining unknown foundation depth using the Parallel Seismic (PS) method. The PS method has proven effective in providing nondestructive and cost-effective details about the geometry and the depth of the piles Ni et al, 2011). Olson (2003) demonstrated that the Parallel Seismic, Ultraseismic (US) methods were the most accurate and broadly applicable borehole-and-surface methods for determining unknown bridge foundation depths.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Nondestructive Geophysical Methods for Evaluating the Condition of Concrete Structures

Almalki

2015

ASEG Extended Abstracts

View full text Add to dashboard Cite

Inclination correction of the parallel seismic test for pile length detection

Cited by 16 publications

References 10 publications

PS wave based parallel seismic test for pile length assessment

PS wave based parallel seismic test for pile length assessment

Integrity Testing of a Platform‐Pile System Using a Sensor Array and Wavenumber Domain Analysis

Experimental Study of Nondestructive Geophysical Methods for Evaluating the Condition of Concrete Structures

Contact Info

Product

Resources

About