Introduction of stiffened pile technology for strong foundation
Rotary jet mixing stiffening pile is a kind of oblique cement cement stiffening anchor solid formed by combining rotary jet grouting and mixing cement soil technology, and combining prestress and soil reinforcement technology. The strength of the slope soil is greatly improved, and the bearing capacity and stability of the slope soil are improved. At the same time, the anchor cable can obtain a high anchorage force to provide support for the foundation pit and slope stability.
Details >Grouting reinforcement foundation treatment technology
Grouting reinforcement method is a kind of common reinforcement methods of ground treatment, and is the solidification of slurry, cement or other chemical grout) injection of rock and soil foundation cracks or pore, out of the water and gas, the connection between soil particles, after hardening and intensity of rock and soil can be consolidated into one big, the waterproof performance is good, good chemical stability of the overall, Thus, the purpose of strengthening foundation, preventing or reducing penetration and uneven settlement can be achieved.
Details >TRD construction method pile construction preparation
1Before site preparation, site leveling must be carried out first, and the inner side of the construction site enclosure center line must be cleared15Most of the surface and underground obstacles in the range of meters, especially the surface mixed fill soil, contain more construction waste such as stones, bricks and concrete blocks, which must be followed before constructionTRDThe construction axis of the piling machine shall be cleaned and no large stones or concrete blocks shall be ensured, and the site shall be leveled to the natural ground-0.300m(Relative elevation). The roadbed of the construction site bears loads to be able to walk100Tons of the shoe......
Details >Strong foundation - traditional concrete support process
Strong foundation has obtained dozens of innovative technologies in pile foundation engineering, foundation pit engineering, water foundation treatment, land foundation treatment, and has been authorized invention patents54Item, utility model patent82Item, appearance design7To promote industrial technological progress as the way of enterprise survival, more than 20 years, in each different period, with continuous innovation results to support the development of enterprises. Process principle: In order to ensure the safety of the underground structure construction and the surrounding environment of the foundation pit, the support of the foundation pit......
Details >CSM construction method is Cutter Soil Mixing (milling) deep Mixing technology, the technology by double rotary cutting on the construction site of the original state soil, at the same time into cement slurry and gas formation thickness of cement soil under continuous wall, used for water stop curtain, retaining wall or formation improvement, with formation adaptability is strong, construction speed is fast, high quality features into a wall, Especially suitable for complex formation use.
Details >Compaction, compaction and compaction of foundation treatment
Compaction, compaction and compaction of foundation refers to the large area of soil filled foundation, or natural soil structure loose, large pores, can not meet the requirements of foundation bearing capacity or deformation, or sandy soil liquefaction under earthquake load, collapsible soil under hydraulic action of subsidence and other engineering hazards. A treated foundation that compacts, compacts or compacts the soil structure, reduces porosity, eliminates liquefaction or collapsibility, and meets the bearing capacity or deformation requirements of the foundation.
Details >Strong foundation -SMW construction technology
SMW construction method, also known as steel-cement soil mixing wall, is used to drill and dig into a certain depth soil layer in the engineering site with a multi-axis type drilling and digging mixer. At the same time, cement slurry is spewed out at the drill bit and the foundation soil is repeatedly stirred, forming a continuous and complete underground wall with certain strength and stiffness, and no joints. A retaining wall, water stop curtain or soft foundation soil reinforcement used for building foundation pit support.
Details >Strong foundation - steel support construction technology
The traditional steel support is widely used in subway and foundation pit. The prestressed fish-belly steel structure support technology is a kind of deep foundation pit internal support structure system developed based on the principle of prestress.
Details >Strong foundation - High pressure rotary jet grouting pile technology
High-pressure jet grouting is a kind of high-pressure jet grouting method. The grouting pipe with a special nozzle is inserted into the designed soil depth, and then the cement slurry is shot out of the nozzle in the form of high-pressure flow to impact the cutting soil. The soil and cement slurry are stirred to form a mixed slurry, forming a continuous lap cement plus solid.
Details >What are the methods of foundation treatment of expansive soil?
Expansive soil in foundation treatment is a kind of structurally-unstable and highly plastic clay with a particle size of 0.002mm. It is mainly composed of highly hydrophilic minerals (such as montmorillonite and illite). It has great water absorption expansion, water loss and shrinkage properties and strength attenuation. Because of this special engineering characteristics, it is easy to appear in the foundation treatment, such as subsidence, mud-churning, longitudinal cracking, peeling, erosion, mud flow, shoulder collapse, slip collapse and other problems, which bring great harm to the project. In the process of engineering construction, it is necessary to accurately judge the expansion and contraction registration of expansive soil and the characteristics of engineering properties, and then choose the appropriate foundation treatment method. The treatment methods of expansive soil foundation are usually as follows:
Details >Hong Kong airport is the biggest challenges facing the third runway construction aspect, before the project starts, sea DCM (mixing pile), land DCM (mixing pile), PVD (drain) in the sea, land gravel pile foundation treatment technology such as are for Japan, South Korea, the monopoly of international advanced technology, before and after the tender, the foreign counterparts enterprises of our country executes strict technology blockade. For this reason, the strong foundation has carried on the thorough research. After more than two years of continuous fighting day and night, countless scientific research, testing and adjustment, we have overcome the difficulties of equipment manufacturing and construction technology of PVD (drainage board) engineering ship, DCM (mixing pile) engineering ship, onshore gravel pile machine, and onshore DCM pile machine, and successfully mastered the core technology.