菱建基礎 List of Products and Services

The "All Casing Method" is a technique that involves excavating the interior while protecting the drilling hole with a casing tube. At Hishiken Kiso Co., Ltd., we offer various application methods, including not only obstacle removal but also low-noise and low-vibration excavation using hydraulic hammer grabs, and reinforcement of the ground at the tip using concrete rings. 【Advantages of the "All Casing Method"】 ■ Minimal impact on surrounding ground ■ Capable of excavating bedrock, boulders, cobblestones, and cutting reinforced concrete ■ Beneficial for environmental conservation measures, such as wastewater treatment and consideration for groundwater ■ Low moisture content in excavated soil, making residual soil disposal relatively easy ■ The side friction force is comparable to driven piles due to the absence of stabilizing fluids or mud water *For more details, please refer to the PDF materials or feel free to contact us.

Our company has carried out the "Removal of Existing Structures" using the all-casing method. The all-casing method, introduced from France's Benot company, has evolved with the times, transitioning from a swinging type to a fully rotating type. What was once difficult, such as excavating hard rock and reinforced concrete, has become possible due to advancements in technology and skills, as well as the experience we have gained. It is now actively used in the removal of underground structures associated with redevelopment projects and in new foundation construction. 【Obstacle Removal Flow】 1. Installation 2. Excavation (reaching the obstacle) 3. Press-in excavation 4. Excavation 5. Obstacle crushing 6. Obstacle removal complete 7. Backfilling (fluidized treated soil) 8. Backfilling complete *For more details, please refer to the PDF document or feel free to contact us.

The "Expanded Base Pile Method" is a construction technique that allows for the removal of existing underground structures and pile foundations of previous buildings while simultaneously installing new piles for a new building. During the pile construction of the new building, the removal of existing underground structures and piles can also be carried out at the same time. Additionally, when used in conjunction with the Earth Drill Expanded Base Pile Method, it meets a wide range of needs for the piles of new buildings. 【Features】 ■ Shortened construction period ■ Cost reduction ■ Avoidance of issues related to the remaining underground structures ■ Removal of obstacles and pile construction can be done in one process ■ Pile installation can be performed without being affected by the backfill condition after obstacle removal *For more details, please refer to the PDF materials or feel free to contact us.

The "BKF method" is a groundbreaking technique that achieves low noise and low vibration through a hydraulic transmission hammer grab, replacing traditional excavation methods using swinging or fully rotating all-casing hammer grabs. It allows for vibration-free excavation without free fall, and excavation can be performed without hoses or units, ensuring both vibration-free and noise-free operations. By winding or warming the spring several times, the cutting edge gradually penetrates, increasing excavation efficiency. 【Features】 ■ Low noise crown; no impact noise ■ Vibration-free; maximum excavation depth of 100m ■ No components that could cause damage ■ No hoses required, eliminating wasted time ■ Reliable excavation without affecting technology *For more details, please refer to the PDF document or feel free to contact us.

The "SENTAN Pile Method" is a construction method based on the all-casing method. After excavation is completed, a split concrete ring installed at the bottom of the hole is pushed in with a load of 2,000 kN/m² or more for each ring, thereby strengthening the tip ground and allowing for pile installation. It is suitable for structures with uneven settlement or strict settlement restrictions, and is appropriate for foundations of railway viaduct construction divided into first and second phases, as well as for the widening of road bridge piers. 【Features】 ■ Dramatic improvement in pile reliability ■ Reduction in total costs ■ Applicable to various structures ■ Compliance with design standards *For more details, please refer to the PDF materials or feel free to contact us.

The "Earth Drill Method (Bell Earth Method)" protects the hole walls using a standpipe and stabilizing fluid, while excavation is performed by rotating a drilling bucket to cut the ground and discharge the soil contained in the bucket to the surface. For shaft excavation, a construction method suitable for the ground (full casing, reverse, earth drill) can be selected. The highly sealed bucket ensures the reliable removal of slime from the bottom of the hole, and the powerful rotational torque allows for large-diameter and deep excavation. 【Features】 ■ Shaft excavation allows for the selection of a construction method suitable for the ground ■ The four-wing excavation pit enables the construction of an excellent bell shape ■ The highly sealed bucket reliably removes slime from the bottom of the hole ■ Powerful rotational torque allows for large-diameter and deep excavation *For more details, please refer to the PDF document or feel free to contact us.