名西建材 List of Products and Services

A "bracing beam" is a structural member that is arranged diagonally within a vertical plane. It takes reaction forces from the anchor piles and the framework, and supports the retaining wall through the diagonally placed bracing beam. *For more details, please refer to the related link page or feel free to contact us.*

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"Percussion" is a construction method that involves suspending a heavy drilling bit (one bit) from the end of a wire rope and moving the rope up and down to break through geological layers while drilling. It demonstrates its effectiveness in challenging conditions such as ground containing many boulders and cobbles, riverbeds, and even in narrow spaces where wall construction has previously been difficult. It is suitable for drilling relatively soft geological layers. [Features] - Demonstrates effectiveness in places where wall construction has previously been difficult - Suitable for drilling relatively soft geological layers - Excels in drilling unstable sand layers and boulder layers that are difficult with other methods *For more details, please refer to the related link page or feel free to contact us.

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"Injection" is a method of improving sandy ground by injecting a solidifying agent (chemical solution) into the voids of the soil to create a stable foundation. First, a survey is conducted to check for any obstacles, and the construction site is marked. A boring machine is set up, and while supplying drilling fluid (chemical solutions A and B), the drilling rod is pressurized and injected to drill to the specified depth. In the first injection, a quick-setting type of chemical is used to fill large voids in loose sand layers and cohesive soil sections, preventing the injected chemical from diffusing or escaping from the injection site. In the second injection, a medium-setting to slow-setting type of chemical is used to permeate and inject into the smaller voids of sandy ground that contain a significant amount of medium to well-compacted sand layers and cohesive soil, solidifying the ground as a whole. Once the specified injection amount for one stage is reached, the process moves to the next stage, and after repeating this for all stages, the chemical solution is replaced with water to fill the injection holes while withdrawing the rods. *For more details, please refer to the related link page or feel free to contact us.*

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The "Deep Well Method" involves installing a deep well inside and outside the excavation trench and using a pump to drain the groundwater that flows into the well. After drilling the ground with excavation machinery, a well casing (screen) is installed, and a submersible pump is inserted into the casing to draw up groundwater. There are several methods for drilling, which are selected based on the depth of the well, the hardness or softness of the ground, and the diameter of the well. 【Features】 - Install deep wells inside and outside the excavation trench and pump out the groundwater flowing into the well. - After drilling the ground with excavation machinery, install the well casing and insert a submersible pump to draw up groundwater. - The drilling method is selected based on the depth of the well, the hardness or softness of the ground, and the diameter of the well. *For more details, please refer to the related link page or feel free to contact us.

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The "Well Point Method" involves attaching well points to the ends of pipes, injecting jet water, and driving numerous points into the ground around the excavation site to lower the groundwater level by pumping water from the pipes installed underground using vacuum power. It is a type of well construction method used when it is anticipated that drainage by well pumps alone will be difficult, and it is widely used for laying underground pipes, installing septic tanks, countermeasures against ground liquefaction, and improving soft ground. This is a ground improvement method used when conducting excavation work in areas with spring water. 【Features】 - Used when it is anticipated that drainage by well pumps alone will be difficult. - Widely used as an improvement method for laying underground pipes and installing septic tanks. - Used when conducting excavation work in areas with spring water. *For more details, please refer to the related link page or feel free to contact us.

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The "placement platform" is installed to secure the flow of movement within the site and the working space for heavy machinery. Many of these platforms are intended for the installation of heavy machinery on structures, distributing the load of the machinery through the placement platform and opening covers to reduce the impact on the structure. They are also referred to as "access platforms" or "protection platforms." 【Features】 ■ Installed to secure the flow of movement within the site and the working space for heavy machinery ■ Distributes the load of heavy machinery through the placement platform and opening covers to reduce the impact on the structure *For more details, please refer to the related link page or feel free to contact us.

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A "cut beam" is a horizontal member that supports sheet piles and other structures to suppress soil pressure and prevent soil collapse when performing earth retention work. It is not necessary when the underground work is shallow, but as the excavation depth increases, the soil pressure becomes stronger, making it necessary because the retaining wall alone does not provide enough support. Excavation is carried out while installing supports for the wall, which is also referred to as shoring. This is a commonly used method, and H-shaped steel is often used for cut beams and struts. 【Features】 ■ A horizontal member that supports the sheet piles to prevent them from falling over ■ Becomes necessary as the excavation depth increases and soil pressure becomes stronger *For more details, please refer to the related link page or feel free to contact us.

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The "Multi-Pulley Extraction Method" involves setting multiple pulleys on an attachment, increasing the capacity of the crane's winch wire rope with the pulleys, and utilizing reaction force to extract piles, H-beams, and steel sheet piles. In the extraction work, the head of the pile to be extracted is excavated to a depth that the vibrator can grasp, and a leader is installed in a stable location where sufficient reaction force can be obtained. After the head of the pile is grasped by the vibrator, the winch of the extraction machine is wound up to lift the pile while cutting the friction between the pile and the ground, and once it is confirmed that the waist has been cut, it is completely lifted using a supplementary winding hook or a corresponding crane. *For more details, please refer to the related link page or feel free to contact us.*

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We would like to introduce a case study of our "Pile Extraction (All Casing)" work. First, we use an excavator to expose the tops of the piles, and then we align the casing screw attached to the heavy machinery with the position of the buried piles and cover them with the casing. While rotating, we excavate down to the tip of the pile, perform the cutting of the pile edge, and confirm that the pile is rotating within the casing's soil discharge outlet. Once the edge cutting is complete, the friction is eliminated, and the pile rotation stops. After that, we set a lifting wire at the tip of the buried pile and extract it with a crane. 【Case Study】 ■ Precast Pile Extraction ■ Cast-in-Place Pile Extraction (Nagoya City, φ1500 L=47.0m) *For more details, please refer to the related links page or feel free to contact us.

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The "Rock Auger Method" is a technique developed to efficiently and economically drill through high N-value gravel layers and hard bedrock. It demonstrates its capabilities in areas such as the construction of large-diameter foundation piles and underground continuous walls, as well as pre-boring. By using a double screw method that reverses internally and externally, it allows for high vertical accuracy in construction. Drilling is performed while protecting the borehole wall with an outer casing, and during the extraction process, a stabilizing fluid is filled, resulting in minimal impact on the surrounding ground. 【Features】 ■ Efficiently and economically drills through high N-value gravel layers and hard bedrock ■ Demonstrates capabilities in the construction of large-diameter foundation piles and underground continuous walls ■ Achieves high vertical accuracy in construction with the double screw method ■ Minimal impact on the surrounding ground due to the filling of stabilizing fluid during extraction *For more details, please refer to the related link page or feel free to contact us.

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The "auger-assisted pressure insertion method" involves installing sheet piles in the chuck device of the auger machine, while rotating the screw inside the casing to excavate and embed the sheet piles. To embed the next sheet pile, the auger machine is moved, and the next sheet pile is installed in the chuck device. The chuck device is rotated 180° to change the orientation of the sheet pile, and while excavating with the screw, the sheet pile is embedded. This process is repeated for construction. 【Features】 ■ Installation of sheet piles in the chuck device of the auger machine ■ Rotating the screw inside the casing to excavate and embed the sheet piles *For more details, please refer to the PDF document or feel free to contact us.

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The "Soil Continuous Wall GuisWall Method" is a new construction method currently under patent application, which uses a special blade to drill overlapping holes for elements and both ends, followed by the insertion of H-steel for construction. Using a dedicated drilling machine, the ground is drilled with an auger, and while discharging cement milk from the tip of the auger, the drilling and mixing of the first and second elements are performed. Next, the third element is constructed by overlapping the end holes of the first and second elements for drilling and mixing. During this process, a special blade is attached and inserted to ensure that the H-steel does not sway sideways, allowing the structure to be built underground. Additionally, due to the single-axis construction method, it is also possible to drive long retaining piles and pier (platform) piles. 【Product Lineup】 ■ Single-axis method (patent application pending, application number: 2021-17112) ■ SMW method * For an overview of the method, please refer to the [PDF download] for materials, and feel free to [contact us] for more details.

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The "Cement Milk Method" is a technique where, after excavation, piles are inserted and integrated with the ground using a cement milk solidifying liquid. Excavation is carried out to the bearing layer using a screw, while injecting the cement milk solidifying liquid as the screw is withdrawn. After that, piles are inserted, and the hardening of the pile surrounding solidifying liquid integrates the piles with the ground, enhancing the bearing capacity. 【Features】 ■ Vibration-free, noise-free method ■ Strengthens bearing capacity by integrating piles with the ground *For more details, please refer to the PDF materials or feel free to contact us.

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"Non-vibrating hydraulic pile driving" is a method where several reaction piles (sheet piles) installed underground are clamped together, using the pull-out resistance as a reaction to push the next pile into the ground with static load from hydraulic pressure. The pile driving machine, power unit, and crane are set up at the construction site, and the initial reaction piles are installed using a reaction frame. First, the pile driving machine and the reaction frame are installed horizontally, using the total weight on the frame as the reaction to drive the first pile. Then, the pile driving machine is self-propelled to use the driven pile as a reaction pile for the installation of the next pile. This process is repeated to ensure smooth construction. 【Construction Examples】 ■ Silent Piler ■ Trench Piler ■ Zero Piler ■ Zero Crash Piler *For more details, please refer to the PDF document or feel free to contact us.

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The "Vibro Hammer Method" involves suspending a vibro hammer from a crane and using vibration force to reduce surrounding friction and tip resistance, allowing for the installation of sheet piles and H-beams underground. The vibration force of the vibro hammer is transmitted to the sheet piles and H-beams, reducing the surrounding friction and tip resistance, enabling driving and extraction through the weight of the vibro hammer and the piles. In cases where construction with the vibro hammer alone is difficult, auxiliary methods such as water jetting or auger combination can be used to accommodate various site conditions. 【Lineup】 ■THV-35 ■SS20L/SS40L ■SR30/SR45 *For more details, please refer to the PDF document or feel free to contact us.

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The "suspension type" is a machine that enables work on uneven ground by equipping a dedicated leader to a crane-type base machine. It generates almost no vibration or noise during construction, and the integration of the pile, enlarged root solidification bulb, and ground allows for the expression of support strength. There are two methods: a one-step method that continuously performs excavation and insertion with tip solidification, and a two-step method where the processes of excavation and insertion with tip solidification are different. The main machine is the Aboron, among others. 【Features】 ■ Capable of working on uneven ground (lifting and lowering) ■ Almost no vibration or noise during construction ■ Support strength is expressed through the integration of the pile, enlarged root solidification bulb, and ground ■ Available in one-step and two-step methods ■ Main machines include Aboron, etc. *For more details, please refer to the related link page or feel free to contact us.

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"Leaderless" is a construction method that utilizes a highly flexible arm based on hydraulic excavators and hydraulic cranes, allowing for auger drilling and pile driving using a vibro hammer. Due to the absence of a leader, low-altitude work is possible. By equipping the arm's tip with hydraulic augers and hydraulic vibros, work can be performed compactly while avoiding aerial obstacles. [Features] ■ Adoption of a highly flexible arm ■ Capable of auger drilling and pile driving using a vibro hammer ■ Low-altitude work is possible due to the absence of a leader ■ Compact work capability ■ Ability to avoid aerial obstacles *For more details, please refer to the related link page or feel free to contact us.

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