Underwater pile foundation detection is an important detection method in construction engineering, which is mainly used to detect the integrity, bearing capacity and stability of underwater pile foundation. The following will introduce several common methods for underwater pile foundation inspection.
1. Ultrasonic testing method.
Ultrasonic testing method is a commonly used non-destructive testing method, the principle of which is to use the propagation characteristics of ultrasonic waves, place the ultrasonic transmitter on the surface of the pile foundation, and record the propagation of ultrasonic waves through the receiver, so as to judge the integrity of the pile foundation. This method has the advantages of simple operation and high precision, and can also detect the defects and damage inside the pile foundation.
2. Radiographic detection method.
Radiographic inspection is a method of detecting internal defects in an object by penetrating its rays. In pile foundation detection, the ray emitter is usually placed on the surface of the pile foundation, and the penetration of the ray is recorded through the receiver, so as to judge the integrity of the pile foundation. This method has the advantages of simple operation and fast detection speed, but it needs to pay attention to the safety protection of radiation.
3. Magnetic particle detection method.
Magnetic particle detection method is a method to detect surface defects by adsorbing magnetic particles on the surface of pile foundations. In pile foundation detection, magnetic particles are usually applied to the surface of the pile foundation, and the integrity of the pile foundation is judged by observing the distribution of magnetic particles. This method has the advantages of simple operation and fast detection speed, but for pile foundations buried deep underground, other methods need to be used for detection.
Fourth, static load test method.
The static load test method is a method to simulate the actual load of the pile foundation by loading weights. In pile foundation detection, the loading equipment is usually placed on the pile foundation, and the actual load situation is simulated by gradually increasing the weight of the weight, so as to judge the bearing capacity and stability of the pile foundation. This method has the advantages of simple operation and intuitive detection results, but it requires a lot of time and manpower.
5. Drill core sampling method.
Core sampling is a method of detecting internal defects in pile foundations by drilling their internal core samples. In pile foundation inspection, a drilling rig is usually used to drill core samples on the pile foundation, and the integrity of the pile foundation is judged through the observation and analysis of the core sample. This method has the advantages of simple operation and intuitive detection results, but for pile foundations buried deep underground, other methods need to be used for detection.
In summary, the common methods of underwater pile foundation detection include ultrasonic testing, radiographic testing, magnetic particle testing, static load testing and core sampling. In practical applications, it is necessary to select the appropriate detection method according to the specific situation to ensure the accuracy and reliability of the detection results. At the same time, it is necessary to pay attention to safety protection and environmental protection to avoid adverse effects on the surrounding environment and personnel.