Nationwide Infrastructure, a New Tide Rises Again

Shangong Machinery's New Eco-Friendly Construction Method Equipment Joins Forces Once Again

Three Sets of Static Drilling and Rooted Pile Method Machines Stand Firm Like Tripods, Deploying in Formation

"Taking Root" Downward

for the Huahong Manufacturing (Wuxi) Engineering Project

Laying a Solid Foundation, Erecting Pillars and Beams

As China's fifteenth economic center city, Wuxi has a strong manufacturing industry and is a major manufacturing base in the Yangtze River Delta region. Recently, the Huahong Manufacturing (Wuxi) Phase II manufacturing base is under intensive construction. As the main force for pile planting in this project, Shangong Machinery's three sets of SDP series static drilling and rooted pile method equipment are deployed together, working in coordination, continuously challenging construction limits, and efficiently and stably safeguarding the project.

▲ Project site

The Huahong Manufacturing (Wuxi) project covers a total land area of 114,000 m², with a total construction area of 530,000 m², comprising 33 individual structures, including: the main production plant, power plant, 10 warehouses, 4 connecting corridors, 2 pipe galleries, 7 pipe bridges, underground pedestrian passages, and various other individual buildings. Upon completion, the project will provide stronger "core" momentum for Wuxi to build a world-class integrated circuit industry cluster.

▲ Construction site

The pile foundation of this manufacturing base project adopts the static drilling and rooted pile method, with a rooted pile usage of 160,000 meters. Shangong Machinery's three sets of SDP series static drilling and rooted pile method drilling rigs achieved high-efficiency pile planting operations of 20 piles per unit per day (pile depth 21 m) and 17 piles (pile depth 52 m) respectively, earning 100% recognition from the customer. The equipment can be matched with JB160M, JB170M, and JB180M dual-rail walking pile driving frames during operation.

▲ Construction site

As a green, eco-friendly new-generation pile foundation construction equipment fully independently developed by Shangong Machinery and suitable for the static drilling and rooted pile method, the Shangong SDP series static drilling and rooted pile method machine adopts internationally renowned brands for its main components, featuring high torque, large drilling depth, high technological content, good reliability, and high construction efficiency, with performance reaching internationally advanced levels.

▲ Construction site

Introduction to the Static Drilling and Rooted Pile Method

The static drilling and rooted pile method uses a static drilling and rooted pile method drilling rig for drilling, full-process mixing, and bottom expansion, and finally implants a precast pile body. Specifically, it refers to a pile foundation method in which pretensioned prestressed concrete bamboo-joint piles (PHDC), pretensioned prestressed concrete pipe piles (PHC), and composite reinforced prestressed concrete pipe piles (PRHC) of different specifications and models are combined in various ways to meet design requirements, and constructed through processes such as drilling, reaming, grouting, and implantation.

Method features:

● No soil squeezing, no vibration, low noise;

● Good pile quality, fully controllable pile top elevation;

● Extremely strong vertical compressive, uplift, and horizontal load resistance;

● Low slurry discharge;

● Good social benefits and promotion value.

Scope of application:

● Suitable for areas of various seismic fortification intensities, with applicable pile diameters: 500-1200 mm;

● Cohesive soil, silt, sand, fill, gravel (pebble) soil, as well as rock strata with complex geological conditions, many interlayers, uneven weathering, and large variations in softness and hardness, with a maximum penetration depth of 90 m;

When the construction site is adjacent to buildings (structures) or underground pipelines and other engineering facilities, and the use of other pile types would cause adverse effects;

● When the top elevation of the pile-end bearing stratum varies greatly and the pile length is difficult to determine accurately, and the construction site lacks conditions for on-site concrete casting or the quality of on-site cast concrete is difficult to guarantee;

● Projects with restrictions on large amounts of slurry discharge;

● When the design requires large single-pile bearing capacity, and the technical and economic indicators and construction conditions are superior to other pile types.  

▲ Construction process of static drilling and rooted piles

Introduction to the SDP Static Drilling and Rooted Pile Method Machine

The SDP series static drilling and rooted pile method drilling rig is a new-generation drilling rig product fully independently developed by Shangong Machinery, leveraging its years of accumulated R&D technical advantages in deep mixing drilling rigs, and suitable for the static drilling and rooted pile method.

Method features:

1. Adopts advanced hydraulic bottom expansion technology, with the expanded bottom diameter being 1-1.6 times the drilling diameter and the expanded bottom height being 3 times the drilling diameter. It also adopts an advanced lower-computer software historical data recording method to record and analyze various data during construction, forming corresponding data curves.

2. Adopts intelligent construction management software, with an intelligent touch-screen control method, providing real-time monitoring of the construction process to ensure construction quality. All construction data are clearly displayed on the monitor and automatically stored, and can be output and printed.

3. The operating system is equipped with a 380V power-loss automatic shutdown program, ensuring that data will not be lost due to system crashes or power outages during the use of the drilling rig.

4. The motor adopts a soft-start method, and the soft starter itself has various motor protection functions, such as undervoltage, phase loss, phase sequence, and overload protection.

5. The hydraulic bottom expansion technology has reliable performance, adopting hydraulic components of excellent quality to ensure normal operation of hydraulic bottom expansion at a depth of 80 m.

Advantages of Static Drilling and Rooted Piles

Static drilling and rooted piles adopt a low-noise drilling rig (static drilling) and the embedment method to complete precast piles (rooted piles) as a pile foundation technology, and are the culmination of modern pile foundation technology. After years of promotion and application, its significant advantages of being green and eco-friendly, energy-saving and emission-reducing, and "more, faster, better, and more economical" have been highly recognized by all sectors of society.

Method features:

"More"

● By adopting combinations of various pile types such as bamboo-joint piles and composite reinforced piles, as well as bottom expansion and grouting technologies, the compressive, uplift, and horizontal bearing capacities of the pile foundation are greatly improved;

● Suitable for various geological conditions, especially pile foundations requiring high bearing capacity and dynamic loads.

"Faster"

● High construction efficiency, with single-machine single-day pile sinking reaching over 300 meters, and economic benefits higher than other pile types;

● Through the drilling rig current, changes in the bearing stratum can be detected, eliminating the need for pile cutting;

● Simple, fast, and reliable mechanical connection methods can be selected to ensure the reliability of pile splicing and the efficiency of construction.

"Better"

1. Pile materials are factory-prefabricated, ensuring quality;

2. Embedment method construction, no soil squeezing, no damage to the pile body;

3. Intelligent construction, fully automatic equipment monitoring, ensuring construction quality;

4. The pile body and pile joints are protected by cement soil, improving corrosion resistance;

5. Green and eco-friendly, fundamentally solving the problem of slurry discharge in engineering construction.

"More Economical"

Under the same conditions, compared with bored cast-in-place piles:

Water saving (construction water consumption reduced by 90%);

Energy saving (construction energy consumption reduced by 40%);

Emission reduction (slurry discharge reduced by 70%);

Time saving (construction efficiency improved by 50%);

Cost saving (engineering cost reduced by 10%-20%);

Carbon emissions reduced by more than 50%.

▲ Static drilling and rooted pile material (bamboo-joint pile)

▲ Static drilling and rooted pile construction site

Looking to the future, Shangong will firmly aim at the dual carbon goals, continuously advance green products, green manufacturing, and green construction, lead the green and sustainable development of the industry, and continue to create value for global customers.