SSP construction method
Improving the seismic performance of pile bent piers! It is economically advantageous as large-scale temporary structures are not required.
The "SSP Method" is a reinforcement technique that can improve the seismic performance of pile bent bridge piers under strict constraints, such as directly beneath existing structures, without the need for large-scale temporary facilities, and without significantly altering the landscape or the river's cross-sectional area. By wrapping reinforcement steel plates around existing piles and driving them in, and integrating them with the existing piles using underwater non-separating non-shrink mortar, the seismic performance is enhanced. 【Features】 - Safe construction while maintaining the use of the existing bridge - No need for large-scale temporary facilities (temporary closures, temporary piers) - Excellent cost-effectiveness - Minimal impact on the river's cross-sectional area during and after construction - Can minimize the impact on navigation routes and rivers *For more details, please refer to the PDF document or feel free to contact us.
basic information
【Other Features】 ■ Simultaneous reinforcement of the pier and foundation is possible ■ Quick investigation and repair reinforcement after damage is possible ■ Increased effective diameter of the foundation is expected to enhance horizontal ground resistance ■ Inclined piles can also be constructed ■ Excellent workability in narrow spaces ■ Low noise and low vibration *For more details, please refer to the PDF document or feel free to contact us.
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Applications/Examples of results
For more details, please refer to the PDF document or feel free to contact us.
Detailed information
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【Case of narrow space under the beam】It can be constructed by lowering the water level with a simple temporary closure.
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Example of a narrow planar space (overpass): Construction can be carried out only within the sidewalk without restricting the roadway.
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Example of limited space in a plane (overpass): Construction can be carried out while the operational line is in use.
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We conducted operational tests and pressure tests necessary for construction using a prototype (for φ400–500mm) with a pressure test of 981kN (100tf).
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[Water Jet Construction Verification Experiment] A simulated ground was created to confirm that it is possible to perform press-in even in hard silt with an N value of approximately 20 to 50, and to examine the shape of the nozzle tip, and construction verification experiments were conducted.
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Oriental Shiraishi Co., Ltd. is a company primarily engaged in the construction and manufacturing sales of prestressed concrete, as well as the construction of pneumatic caissons and repair and reinforcement construction. We contribute to the development of social infrastructure by utilizing special technologies in a setting that looks towards the great nature, the earth, and the future of cities.
