The calculation formula of pipeline operating parameter is similar to that of damage parameter, and it is just needed to substitute n as the number of functional defects of the pipeline.
After the foundation pile is used to make holes and before the concrete is poured, embed a number of sonic logging pipes in the pile as the channels for the acoustic wave transmitting and receiving transducers.
Ultrasonic is a kind of elastic wave. The concrete medium is regarded as an elastic body. The propagation of ultrasonic waves in concrete obeys the law of elastic wave propagation.
After the foundation pile is used to make holes and before the concrete is poured, embed a number of sonic logging pipes in the pile as the channels for the acoustic wave transmitting and receiving transducers.
Strike with a hammer (force bar) in the vertical direction on the top surface of the pile (or superstructure such as pile cap without pile top connection) to generate stress wave, which propagates downward along the pile body and transmits when it meets t
In the process of pile foundation inspection, besides the conventional underground pile foundation, it is sometimes necessary to inspect the length and integrity of foundation piles in deep foundation, foundation piles under bridge piers and existing buil
In a test pile testing, the pile type is a bored pile, with a length of 22.7m, a diameter of 500mm, and the design gives a bearing capacity characteristic value of 3100kN.
The static load test method is recognized as the most direct and reliable test method for testing the bearing capacity of foundation piles and foundations.
The structural defect type of pipeline is the reference value for making comprehensive definition of local defect or whole defect in evaluation of the pipeline.
The parameter for pipeline damage condition is the calculation result of defect score, S is arithmetic mean value of the scores of each defect of pipeline, and Smax is the highest score among the scores of each defect of pipeline.
