2. Deviation in installation of reinforcement cages

Precise and efficient positioning tool for reinforcement cagesThrough connecting rebars of a certain length, sleeves, and positioning cross-shaped steel rings, the reinforcement cage can be positioned quickly and accurately, improving the installation quality of the reinforcement cage. At the same time, the tool can be reused, effectively saving project costs.

Schematic diagram of the use of the precise and efficient positioning tool for reinforcement cages

3. Fabrication of pile foundation reinforcement cages

In the figure:1base,2rotating member,3round tube bearing core,4bearing,5pile foundation reinforcement cage.

4. Control of over-casting elevation of pile foundation concrete

Pile foundationgrouting control alarm deviceuses a sensor to detect when the laitance layer reaches the elevation position; a yellow light flashes and sounds an early warning; when the concrete reaches the elevation position, a green light flashes and sounds a notification, and then concrete pouring can be stopped. It perfectly solves pain points in the construction process: solving problems such as excessive over-casting and uneven pile tops in cast-in-place pile construction, thereby achieving the purposes of avoiding concrete waste, saving costs, improving construction efficiency, and avoiding penalties.

Green light: stop pouring

5. Quality control of pile head breaking

The use of the "protection and rapid pile cutting mold for reserved rebars of cast-in-place pile heads" solves the drawbacks of traditional manual pile breaking and can effectively ensure the quality of pile heads and prevent reserved rebars from being contaminated.

Through the application of the micro-innovation achievement "a detachable tremie pipe rack," the project solved the problem of inconvenient movement of the tremie pipe during secondary hole cleaning with a fixed tremie pipe rack. It enables the tremie pipe rack to be moved away during secondary hole cleaning, with a crane separately lifting the tremie pipe for secondary hole cleaning, making it convenient to move the tremie pipe to locations with thick sediment and improving the efficiency and quality of secondary hole cleaning.

By applying the screening bucket to an excavator, the separation of drill cuttings and mud in the mud pit during pile foundation construction can be achieved, reducing the amount of drill cuttings transported off-site and avoiding environmental pollution caused by mud overflow, thereby improving the efficiency of drill cuttings treatment. Secondly, the screening bucket converts drill cuttings such as silt and clay into mud, improving the reuse rate of drill cuttings such as silt and clay and saving mud-making materials such as bentonite. Finally, the screening bucket can wash pebbles in the mud pit clean, so that the pebbles can be used for filling construction access roads, saving the amount ofslagused for filling construction access roads.

8. Construction method for quality control of pile foundation hole formation based on digital twins

The construction method for quality control of pile foundation hole formation based on digital twins automatically monitors the hole-forming quality indicators of cast-in-place piles through information-based hole-forming recording means, making the pile foundation construction process traceable, further improving the controllability of pile foundation hole-forming quality, and solving the dual risks of quality and cost control in existing pile foundation hole-forming operations, such as large interference from human factors, difficulty in tracing records, and difficulty in ensuring the objectivity and accuracy of construction records. It greatly saves the time required for multiple positioning and setting-out of pile foundations, substantially improves construction efficiency, and promotes transparent settlement and quality acceptance of the project's pile foundation construction.