Reasons for tilted steel pipe pile:
Steel pipe pile tilt refers to the phenomenon of pipe pile tilting or overturning during construction. The reasons may be:
1. Poor geological conditions: complex geomechanical conditions, large changes in soil and rock layers, which can easily cause pipe pile tilt.
2. Construction factors: low technical level of construction personnel, inadequate debugging of mechanical equipment, improper operation and other reasons will cause pipe pile tilt during construction.
3. Natural factors: Natural disasters such as earthquakes and floods may cause pipe pile tilt.
Detection method for tilted steel pipe pile:
After the steel pipe pile is tilted, it is necessary to conduct timely detection to determine the degree of deflection and the scope of influence. The detection methods are generally:
1. Geological survey: Geological survey can use geological radar, detection sound waves and other instruments to determine whether the pipe pile is tilted.
2. Laser monitoring: With the help of laser instruments, the pipe pile is monitored in real time to detect the deflection of the pipe pile in time.
3. Steel rope measurement: Use steel rope and other instruments to measure the degree of deflection and tilt direction of the pipe pile.
Treatment measures for steel pipe pile tilting:
If the pipe pile is found to be deflected, timely measures must be taken to avoid affecting the project progress. Specific treatment measures are:
1. Adjust the construction plan: Reasonably adjust the construction process, select suitable mechanical equipment, improve construction efficiency, and reduce the risk of pipe pile tilting.
2. Use support equipment: For deflected pipe piles, support equipment can be used to restore them to normal to ensure the quality of the project.
3. Redo pipe piles: When the degree of deflection of the pipe pile is large and the impact range is wide, the damaged pipe piles need to be replaced to ensure the normal progress of the project.
The treatment methods for different situations of steel pipe pile driving are as follows:
1. Treatment of deflected piles with damaged pile body
Low strain test is carried out on all deflected pipe piles to determine the damage degree and location of the pile body.
Use the top push method for correction construction, using drilling rigs, high-pressure water guns, jacks and other equipment.
2. Treatment of deflected piles with broken pile body
Give priority to pile filling. For situations where the construction site is limited and the distance between pipe piles is close, the method of filling the pile core can be used.
If the requirements are still not met, consider adding anchor static pressure piles to enhance the bearing capacity of the foundation.
3. Supplementary sinking method and supplementary pile method
The supplementary sinking method is suitable for situations where the prefabricated piles are not deep enough into the soil or the driven piles are lifted up due to soil uplift.
The supplementary pile method can be used by drilling first, then planting piles, and then sinking piles. It is suitable for supplementary piles before the pile foundation or supplementary static pressure piles after the basement is completed.
4. Correction method
Applicable to the case where the pile body is tilted but not broken. It is handled by using the jack correction and reset method after local excavation.
5. Expanding the foundation method
When the pile position deviation is large or the bearing capacity of a single pile does not meet the design requirements, it is necessary to expand the area of the foundation.
6. Modify the pile type or pile sinking parameters
Change the pile type, such as changing the prefabricated square pile to a prestressed pipe pile.
Conclusion:
Pipe pile tilting is an inevitable problem for large-scale projects, but as long as scientific construction, scientific testing, and scientific treatment are carried out, major safety accidents and project quality problems can be avoided. I hope the content of this article can help you solve this problem.
Steel pipe pile tilt refers to the phenomenon of pipe pile tilting or overturning during construction. The reasons may be:
1. Poor geological conditions: complex geomechanical conditions, large changes in soil and rock layers, which can easily cause pipe pile tilt.
2. Construction factors: low technical level of construction personnel, inadequate debugging of mechanical equipment, improper operation and other reasons will cause pipe pile tilt during construction.
3. Natural factors: Natural disasters such as earthquakes and floods may cause pipe pile tilt.
Detection method for tilted steel pipe pile:
After the steel pipe pile is tilted, it is necessary to conduct timely detection to determine the degree of deflection and the scope of influence. The detection methods are generally:
1. Geological survey: Geological survey can use geological radar, detection sound waves and other instruments to determine whether the pipe pile is tilted.
2. Laser monitoring: With the help of laser instruments, the pipe pile is monitored in real time to detect the deflection of the pipe pile in time.
3. Steel rope measurement: Use steel rope and other instruments to measure the degree of deflection and tilt direction of the pipe pile.
Treatment measures for steel pipe pile tilting:
If the pipe pile is found to be deflected, timely measures must be taken to avoid affecting the project progress. Specific treatment measures are:
1. Adjust the construction plan: Reasonably adjust the construction process, select suitable mechanical equipment, improve construction efficiency, and reduce the risk of pipe pile tilting.
2. Use support equipment: For deflected pipe piles, support equipment can be used to restore them to normal to ensure the quality of the project.
3. Redo pipe piles: When the degree of deflection of the pipe pile is large and the impact range is wide, the damaged pipe piles need to be replaced to ensure the normal progress of the project.
The treatment methods for different situations of steel pipe pile driving are as follows:
1. Treatment of deflected piles with damaged pile body
Low strain test is carried out on all deflected pipe piles to determine the damage degree and location of the pile body.
Use the top push method for correction construction, using drilling rigs, high-pressure water guns, jacks and other equipment.
2. Treatment of deflected piles with broken pile body
Give priority to pile filling. For situations where the construction site is limited and the distance between pipe piles is close, the method of filling the pile core can be used.
If the requirements are still not met, consider adding anchor static pressure piles to enhance the bearing capacity of the foundation.
3. Supplementary sinking method and supplementary pile method
The supplementary sinking method is suitable for situations where the prefabricated piles are not deep enough into the soil or the driven piles are lifted up due to soil uplift.
The supplementary pile method can be used by drilling first, then planting piles, and then sinking piles. It is suitable for supplementary piles before the pile foundation or supplementary static pressure piles after the basement is completed.
4. Correction method
Applicable to the case where the pile body is tilted but not broken. It is handled by using the jack correction and reset method after local excavation.
5. Expanding the foundation method
When the pile position deviation is large or the bearing capacity of a single pile does not meet the design requirements, it is necessary to expand the area of the foundation.
6. Modify the pile type or pile sinking parameters
Change the pile type, such as changing the prefabricated square pile to a prestressed pipe pile.
Conclusion:
Pipe pile tilting is an inevitable problem for large-scale projects, but as long as scientific construction, scientific testing, and scientific treatment are carried out, major safety accidents and project quality problems can be avoided. I hope the content of this article can help you solve this problem.
