Robot-assisted concrete pile driving process
1. Prepare documents related to concrete pile pressing
1.1. Personnel profile:
– Compile a list of workers and staff participating in the construction.
– Conduct health check-ups and provide occupational safety training for workers participating in the construction project.
– Prepare and submit a list of staff members who will work directly with the Investor and relevant parties.
Unified form:
– Prepare and submit sample documents and official letters for use during the construction process.
– Prepare and submit a detailed construction schedule for approval. (attached)
1.2. Construction technical design documents:
– Continuously check all drawings used throughout the construction period.
– Prepare and submit material samples before construction begins.
– Prepare and submit detailed construction methods for each item based on the bid documents and actual conditions.
site before starting construction.
2. Construction site for pressing concrete piles by robot
2.1. Temporary services
– Electrical system under construction
– Construction site lighting system and site security lights
– Telephone systems and other means of communication.
– Water supply piping system under construction.
– Contractor signage, project name signs, and other hazard warning signs.
– Install fixed barrier systems and provide sufficient movable barriers and hazard warning lights.
2.2. Clean the ground
– Restore and protect the boundary marker system and the surveyed points.
– Restore the site to its original condition and retain existing site data throughout the construction process.
– Clear and prepare the site before commencing surveying work.
3. Construction materials and equipment
All construction equipment gathered to the site must be guaranteed operating procedures and procedures include :
– 500T hydraulic press robot (with inspection certificate).
– Welding machine 3.
– Plumb bob, theodolite or total station.
Figure 1. Robots Pile hydraulic
Figure 2. Operation of Hydraulic Piling Robot
4. Technical method of driving reinforced concrete piles using a hydraulic pile driver robot.
4.1. Sequence of mass pressing piles
The process of pressing piles in the foundation pit includes the following steps:
a.Prepare
– Use steel rods with a diameter of 8 to 10 mm and a length of 30 to 40 cm to drive into the ground at the following locations. location heart pile to make sign.
– Construction plan and movement diagram of the hydraulic pile-driving robot.
b. Pile pressing construction process:
+ Step 1: Gather concrete piles, check pile presses, get ready the necessary tools for preparation Pile concrete
+ Step 2: Crane piles from the gathering place into the press.
Figure 3. Lifting piles to the press robot
+ Step 3: Adjust the nose Concrete piles in the correct position of the determined heart, adjust the pile in the vertical direction.
Figure 4. Pile alignment
+ Step 4: Start the press and start the first press stroke.
Figure 5. Carrying out pressing
+ Step 5: Continue pressing until the end of the first pile, put the second pile in place, adjust the two ends of the pile to match and soldering.
Figure 6. Pressing the remaining pile segments
Continue pressing until the pile tip reaches the design depth.
– Stop pressing piles is applied in the following cases:
+ The pile tip reaches the design depth and the pile head pressure is not less than Pmin.
+ If the pile tip has not reached the design depth, stop pressing the pile when the pile head pressure is not less than Pmin
+ If the pile tip reaches the design level and the pile pressure is less than Pmin then pile pressing continues until the pressure reaches P .min The construction unit will notify the Supervision Consultant, the Investor, and the Design Consultant when there is a difference between the value of pressure and depth of pile pressing to have a solution, when necessary, do additional soil surveys, do test tests to have a basis for treatment conclusions.
Piles that are excessively inclined (greater than 1%), piles that are not driven properly due to encountering foreign objects such as sand pockets or unusually hard clay layers, or piles that are broken... are all considered problematic. must be handled by pulling up and pressing again or adding new piles (designated by design).
Use appropriate drilling methods to remove foreign objects, penetrate through sand pockets, hard clay layers, etc. When the pile driving force reaches the design value but cannot go any further, while the driving force acting on the pile continues to increase beyond the design value. maximum overpressure (Pep)max then before stopping the pressure, use valve to keep the maintaining force (Pep)max within 5 minutes.In case the press does not have a retaining valve, it must be pressed three to five times with the pressure (Pmax).
c. Tolerance:
At the height of the bottom of the pile head, the error must not exceed 75mm compared to the design position, the inclination of the pile is not more than 1%. (according to TCXD 9394:2012).
d. Report on the history of pile pressing.
– The pile driving record must be documented during the construction process and include the following information:
+ Date of pile casting.
+ Number of piles, location and size of piles.
+ Pile pressing depth, number of piles and pile joints.
+ Pressing device, capacity of pressing, jacking stroke, piston area, oil flow, maximum oil pump pressure.
+ Pressure to stop piling.
+ Pillar head gasket type.
+ Order of pressing piles in the group.
+ Technical problems hindering the pile driving as designed, errors in position and inclination.
+ Name of staff supervising the construction team leader.
5. Traffic management on construction site
– All operations must be carried out easily and safely for both equipment and workers. Unauthorized personnel are prohibited. operated under the rotation of the device.
– No unauthorized personnel are allowed to enter the construction area. Security personnel must be present around the monitoring equipment installation area to avoid any potential interference from the equipment.
6. Pre-acceptance inspection
After completing the pile pressing of the whole project, the parties organize the inspection and acceptance at the construction site in accordance with regulations, XDCB sequence.
Records and documents include:
+ Profile quality pile.
+ Diary of pile pressing.
+ As-built drawing of piles.
+ Minutes of acceptance.
+ Other relevant documents as prescribed.
7. Troubleshooting measures
During construction, unexpected incidents may occur, the Contractor confirms to eliminate as far as possible all the risk of an accident.
– To effectively resolve these issues without affecting the quality and progress of the project requires: close cooperation between the units participating in the construction and the project management agencies.
Our contractor will carry out the troubleshooting work in the following order:
– Prepare a report when an incident occurs.
– Preliminary assessment of the incident by stakeholders.
– We request that the investor convene a meeting of all relevant parties to discuss solutions and the timeline for resolving the issue.
– Prepare and schedule the implementation of solutions in accordance with the decisions of the relevant authorities.
– Implement incident resolution.
– Evaluation and lessons learned
8. Conclusion
With the available capacity and experience of a professional contractor, with a team of staff and workers who are trained and step by step trained through the construction of large projects across the country, with full capabilities complete Good works with high quality with the fastest progress and absolute safety.
Contact us
If you are in need of building or constructing a factory, please contact us to receive detailed advice and quotation. We will listen and understand your requirements and ensure the best solution.
Contact information:
- Address: No. 12, Street 27, Van Phuc Urban Area, Hiep Binh Phuoc Ward, Thu Duc City, HCMC
- Phone number: 0915.611.337 Mr. Phuong Or 0915.411.337 Mr Quan
- Email: [email protected] or [email protected]
- Website: Lethycorp.com
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