Ground reinforcement work | SMD method to solve difficult construction near existing retaining walls and cliff regulations.
Ground reinforcement work
The SMD method safely solves difficult construction near existing retaining walls and under repose angles, using low vibration and low side pressure rotary penetration technology along with clear ministerial certification data.
Ground reinforcement work is essential to ensure reliable support in harsh construction environments, such as sites with elevation differences or existing retaining walls nearby, without compromising the safety of surrounding structures. In new construction near existing retaining walls without inspection certificates or in areas subject to cliff regulations, it is necessary to embed the foundation deeper than the angle of repose, while also paying close attention to the risk of wall collapse due to lateral pressure and vibrations during pouring. The SMD pile method provided by Geotech Co., Ltd. is a small-diameter rotary driven steel pipe pile method certified by the Minister of Land, Infrastructure, Transport and Tourism, which brilliantly addresses these challenging construction issues. This method employs a soil-free rotary insertion technique that minimizes vibrations and lateral pressure during drilling, allowing for smooth penetration to the target depth without adversely affecting nearby retaining walls or neighboring houses. It is equipped with a public support capacity calculation formula derived from standard penetration tests (N values), ensuring extremely smooth compliance with regulatory agencies and local government guidance. Our specialized technical staff provides consistent support from preliminary studies to on-site torque management, enabling safe construction planning under stringent site conditions.
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basic information
The SMD method is a construction method certified by the Minister of Land, Infrastructure, Transport and Tourism (TACP-0112/0113, etc.) that responds to existing retaining walls and challenging site environments. It consists of STK steel pipes with a main axis diameter of φ89.1mm to φ267.4mm and special outer and inner wings, allowing for low-vibration and low-lateral pressure rotary insertion. The maximum construction depth reaches 130 times the axis diameter (up to 34.8m) and is applicable to sandy and clayey soil layers. With a clear bearing capacity evaluation formula, it possesses high reliability specifications that facilitate smooth passage through administrative guidance and structural conformity reviews.
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Applications/Examples of results
The SMD method is ideal for new construction projects on sites adjacent to existing retaining walls without inspection certificates, as well as for sites with significant elevation differences that require deep foundation reinforcement while considering the angle of repose (30-degree line). It is widely used for foundation reinforcement in areas near slopes subject to cliff regulations, residential buildings with basements that experience significant uneven loading, and steel-framed buildings with 3 to 4 stories. It is chosen for high-difficulty construction projects where it is essential to carry out work without causing lateral pressure damage to surrounding ground and retaining walls, and to complete the confirmation application process promptly.
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