Acquisition of construction technology review certification! Directly driving steel pipe sheet piles into bedrock.
The "Micro Joint Pile Method" is a rock embedding method using special short-length jointed steel pipe sheet piles that eliminates the need for pre-drilling at the joint sections. By utilizing special short-length joints (micro joints) to shorten the pitch, the labor of pre-drilling is eliminated. By installing micro joint-type steel pipe sheet piles specifically designed for this method at approximately one-fourth the conventional short pitch, pre-drilling at the joint sections becomes unnecessary, allowing for simultaneous rock excavation and installation of steel pipe sheet piles in one process. 【Features】 ■ Construction technology review certification obtained ■ Direct installation of steel pipe sheet piles into rock layers is possible ■ Rental options for steel pipe sheet piles are available ■ Elimination of pre-drilling labor through pitch shortening with special short-length joints *For more details, please refer to the PDF materials or feel free to contact us.
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basic information
【Other Features】 - It is possible to directly drive steel pipe sheet piles into riverbed sediments and boulders/rock layers (rock classification B and below). - By combining micro-joint piles with a down-the-hole hammer of the enlarged diameter type, pre-drilling of joint holes is unnecessary, allowing for a reduction in the construction schedule. - By injecting swelling water-stopping material into the female part of the micro-joint at the manufacturing plant, the water-stopping capability required for temporary cutoff can be secured. - The micro-joints after driving are not fixed, allowing for the extraction of steel pipe sheet piles. - Steel pipe sheet piles that show no abnormalities after inspection can be reused, improving cost reduction and recyclability. - By reducing the number of machinery and equipment, ancillary tasks such as assembly and installation removal can be minimized, simplifying on-site work. - It can be applied not only to the down-the-hole hammer method but also to steel pipe sheet pile driving methods using an enlarged diameter middle drilling machine. *For more details, please refer to the PDF document or feel free to contact us.
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Applications/Examples of results
【Applicable Work Types】 ■ Retaining walls, temporary cutoff walls, river and harbor revetments ■ Various wall structures for dam renewal and functional enhancement projects ■ Steel pipe sheet pile cofferdams for river crossing bridges and marine bridges ■ Erosion control structures for various rivers and marine structures ■ Water barriers requiring cutoff measures for industrial waste disposal sites *For more details, please refer to the PDF materials or feel free to contact us.
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Company information
Yokoyama Foundation Construction Co., Ltd. is a company located in Sayogun, Hyogo Prefecture, primarily engaged in civil engineering, scaffolding and earthwork, and paving construction. For rapid construction of heavy temporary works that support the foundation of construction sites and foundation works that support structures, please leave it to Yokoyama Foundation Construction Co., Ltd.