Automated Open Caisson Method (SOCS)
This construction method overcomes the issues associated with traditional open caisson methods by utilizing advanced technology, enabling reliable and high-precision sinking of caissons under various ground conditions. It is environmentally friendly and allows for significant labor savings and shortened construction periods through automation. The key feature of this method is the introduction of an automatic underwater excavation machine at the caisson's cutting edge, which allows for reliable excavation of the ground directly beneath the caisson, a task that was previously difficult. This excavator can handle hard ground and withstand water pressure of up to 1.0 MPa, making it capable of construction at depths of up to 100 meters. Since the excavation and soil removal operations can be performed independently, it is also applicable to large-diameter shafts. The method consists of three systems: an automatic excavation and soil removal system, an automatic sinking management system, and a precast body system, making it applicable to a wide range of ground conditions from soft soil to medium-hard rock. These systems can be used in combination, or each system can be employed individually or in pairs depending on the site conditions.
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basic information
This construction method overcomes the issues associated with traditional open caisson methods by utilizing advanced technology, enabling reliable and high-precision sinking of caissons under various ground conditions. It is environmentally friendly and allows for significant labor savings and shortened construction periods through automation. The key feature of this method is the introduction of an automatic underwater excavation machine at the caisson's cutting edge, which ensures reliable excavation of the ground directly beneath the caisson, a task that was previously difficult. This excavator can handle hard ground and withstand water pressure of up to 1.0 MPa, making it suitable for construction depths of up to 100 meters. Since the excavation and soil removal operations can be performed independently, it is also applicable to large-diameter shafts. The system consists of three components: an automatic excavation and soil removal system, an automatic sinking management system, and a precast body system, making it applicable to a wide range of ground conditions from soft soil to medium-hard rock. These systems can be used in combination or individually, depending on the site conditions.
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Applications/Examples of results
【Uses】 Bridge foundation Shaft Rainwater retention facility
Company information
The PC Well Method Research Association was established in June 1984 with the aim of promoting the method developed by the Ministry of Construction's Civil Engineering Research Institute (at the time), which is based on the PC Well Method that involves the use of a bottom-expanding excavator and cylindrical precast concrete blocks suspended and installed as caissons. Since then, many companies have participated in the activities of the research association, and as of now, there have been over 2,500 construction achievements related to the "PC Well Method." Additionally, the "Automated Open Caisson Method (SOCS)," which has been developed since the 1990 fiscal year as part of the Ministry of Construction's comprehensive technology development project, has been adopted in nine projects to date. The research association was founded with the purpose of spreading and developing this new construction method and improving construction technology. It has established permanent committees for public relations, estimation, construction, and design, and is committed to diligent research and development, hoping to contribute, even in a small way, to national land development.
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