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中文National infrastructure construction, tide rises again
SEMW's new environmental protection method and equipment join hands to attack again
3 sets of static drilling and rooting machines stand upright and line up
down "rooted"
Manufacturing (Wuxi) project for Hua Hong
Ramming foundations, pillars and beams
As the 15th economic center city in China, Wuxi has a strong manufacturing industry and is the main manufacturing base in the Yangtze River Delta region. Recently, the second phase of Huahong Manufacturing (Wuxi) manufacturing base is under construction. The main force, SEMW, has 3 sets of SDP series static drilling and rooting machine equipment, working together, constantly challenging the construction limit, and escorting the project efficiently and stably.
Huahong Manufacturing (Wuxi) project covers a total area of 114,000 square meters, with a total construction area of 530,000 square meters. There are 33 units in total, including: main production plant, power plant, 10 warehouses, 4 corridors, and 2 pipe corridors , 7 pipe bridges, underground pedestrian passages and other single buildings. After the completion of the project, it will build a world-class integrated circuit industrial cluster in Wuxi and provide a stronger "core" power.
The pile foundation of the manufacturing base project adopts the static drilling and rooting method, and the amount of rooting piles is 160,000 meters. Three sets of SDP series static drilling and rooting method drilling rigs of Shanggong Machinery make 20 piles (pile depth 21m) and 17 piles ( The pile depth is 52m) and the high-efficiency pile construction operation has been fully recognized by customers. The equipment can be matched with JB160M, JB170M, and JB180M double guide rail walking piling frames for construction.
As a green and environmentally friendly new-generation pile foundation construction equipment suitable for static drilling and rooting construction completely independently developed by SEMW, the main components of SEMW SDP series static drilling and rooting machine adopt international famous brands, with large torque and large drilling depth , high technological content, good reliability, high construction efficiency and other characteristics, the performance has reached the international advanced level.
Introduction of Static Drilling and Rooting Method
The static drilling and rooting method is to use the static drilling and rooting pile method to drill holes, mix the whole process and expand the bottom, and finally implant the prefabricated pile body, that is, pretensioned prestressed concrete bamboo piles (PHDC), pretensioned prestressed bamboo piles Different specifications and models of stressed concrete pipe piles (PHC) and composite reinforced prestressed concrete pipe piles (PRHC) are combined in various combinations to meet design requirements, and construction is carried out according to drilling, reaming, grouting, implantation and other processes pile foundation method.
Construction method features:
●No soil extrusion, no vibration, low noise;
●The quality of the pile is good, and the elevation of the pile top is completely controllable;
●Extremely strong vertical compression, pullout and horizontal load resistance;
●Less mud discharge;
●It has good social benefits and promotion value.
Scope of application:
●Applicable to areas with various seismic fortification intensity, applicable pile diameter: 500-1200mm;
Cohesive soil, silt, sandy soil, filling soil, crushed (gravel) rocky soil, and rock formations with complex geological conditions, many interlayers, uneven weathering, and large changes in hardness and softness, the maximum depth of penetration: 90m;
When there are buildings (structures) or underground pipelines and other engineering facilities near the construction site, using other pile types will cause adverse effects;
When the elevation of the top of the bearing layer at the pile end changes greatly, the length of the pile is difficult to determine accurately, the construction site is not available, the conditions for pouring concrete on site or the quality of concrete pouring on site is not easy to guarantee;
●Projects with restrictions on the discharge of a large amount of mud;
●The design requires that the bearing capacity of a single pile is relatively large, and the technical and economic indicators and construction conditions are superior to other pile types.
Introduction of SDP Static Drilling and Rooting Machine
The SDP series static drilling and rooting method drilling rig is a new generation of drilling rig products independently developed by Shanggong Machinery, which is suitable for the construction of static drilling and rooting method, by taking advantage of the accumulated technical advantages of deep mixing drilling rigs for many years.
Construction method features:
1、Adopt advanced oil pressure bottom expansion technology, the bottom expansion diameter is 1-1.6 times of the drilling diameter, the bottom expansion height is 3 times of the drilling diameter, and the advanced lower computer software historical data recording method is used to monitor the construction process The various data in the system are recorded and analyzed to form corresponding data curves.
2、Adopt intelligent construction management software, control adopts intelligent touch screen mode, monitor the construction process in real time to ensure construction quality, all construction data are clearly reflected on the display and automatically stored, and can be output and printed.
3. The operating system is equipped with a power-off 380V automatic shutdown program, which ensures that the data will not be lost due to crashes or power failures during the use of the drilling rig.
4. The motor starting method adopts soft start, and the soft starter itself has various motor protection functions, such as undervoltage, phase loss, phase sequence, overload and other protections.
5. The performance of the hydraulic bottom expansion technology is reliable, and the high-quality hydraulic components are used to ensure the normal operation of the hydraulic bottom expansion at a depth of 80m.
Advantages of static drilling and rooting piles
The static drilling and rooting pile adopts the low-noise drilling machine (static drilling) and the embedded method to complete the pile foundation technology of the prefabricated pile (planting pile), which is a master of modern pile foundation technology. After years of popularization and application, its significant advantages of "many, fast, good, and economical" such as green environmental protection, energy saving and emission reduction have been highly recognized by all walks of life.
Construction method features:
"many"
●Through the use of various pile types such as bamboo piles and composite reinforced piles, as well as bottom expansion and grouting techniques, the pile foundation's compression, pullout, and horizontal bearing capacity can be greatly improved;
●Applicable to various geological conditions, especially pile foundations with high bearing and dynamic load requirements.
"quick"
●The construction efficiency is high, the single-machine single-day pile sinking can reach more than 300 meters, and the economic benefit is higher than other pile types;
●Through the current of the drilling rig, the change of the bearing layer can be detected without cutting piles;
●A simple, fast and reliable mechanical connection method can be selected to ensure the reliability of pile connection and the efficiency of construction.
"good"
1. The pile materials are prefabricated in a factory, and the quality is guaranteed;
2. Embedded construction, no soil extrusion, no damage to the pile body;
3. Intelligent construction, automatic monitoring of equipment to ensure construction quality;
4. The pile body and pile joints are protected by cement and soil to improve the corrosion resistance;
5. Green and environmental protection, it fundamentally solves the problem of mud discharge in engineering construction.
"Province"
Compared with bored piles under the same conditions:
1. Water saving (construction water saving 90%);
2. Energy saving (construction energy consumption can be saved by 40%);
3. Emission reduction (mud discharge is reduced by 70%);
4. Time saving (construction efficiency increased by 50%);
5. Cost saving (construction cost saving 10%-20%);
6. Reduce carbon emissions by more than 50%.
Facing the future, SEMWg will firmly aim at the double carbon goal, continue to promote green products, green manufacturing, green construction, etc., lead the green and sustainable development of the industry, and continue to create value for global customers.
Post time: Aug-04-2023