Study on the Effect of Vibration Loads Induced by Bridge Pile Foundation Construction on Adjacent Buried Pipeline

Abstract

Building up the 3D numerical analysis and computing model, force properties of buried pipelines under vibration loads induced by bridge pile foundation construction were researched, to evaluate and control the influence of construction vibration on adjacent buried pipeline. It was concluded that the most adverse position of impact loads effect on pipeline appeared in the upper right and lower left parts of the pipeline closed to the side away from the pile hole about a quarter of an arc. And the peritubular stress distribution curve with the change of the vibration source location were approximately sinusoidal line, parabola and the cosine line changes. Another, under the same conditions, the vibration velocity of ground above the pipeline was significantly greater than the pipeline itself vibration velocity, so through a reasonable assessing and controlling the vibration velocity of ground above the pipeline, it could be made security decisions for buried pipelines. Finally, according to the horizontal spacing of the buried pipeline and shock vibration source, the pipeline grading protection measures were proposed, with achieving better results in engineering application. Research results could provide some evidence both for the force calculation and design construction of the pipeline project, and support for scientific decision-making of the bridge pile foundation construction. It has an important social and economic efficiency.

Experimental and Numerical Study on the Strain Behavior of Buried Pipelines Subjected to an Impact Load

“…In practical engineering, the buried depth of a pipeline is generally 2.5 m with a diameter of 700 mm; moreover, the effective length of a buried pipeline is generally 20 m. In view of the Technical Specification for Seismic Resistance of Oil and Gas Pipeline Engineering and relevant literature [38][39][40], a scale of the specimens was taken as 1:7 to simulate the actual pipeline in this test. Table 2 shows the cross-sectional dimensions and the impact parameters of all specimens without consideration of the effect of oil and gas pressure.…”

Strong ramming impact response law study of flange pipes

“…Chuanjun Han et al [8] used numerical simulation to investigate the effect law of pipe parameters, ramming speed, and rammer volume on the pipe's equivalent force, strain, and state deformation. Yanhua She [9] investigated the dynamic response of buried pipes under three positional relationships with the ramming point located at the pipe level by LS-DYNA software regarding the vibration source location.…”