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: 12 Nov

Construction process of undisturbed earth taking and pressing grouting pile

(1) According to the positioning axis of the building, the full-time surveyors will accurately lay out the pile position to the site according to the pile position plan, and use wooden sticks and white ash points as the pile position identification. (2) Allowable error of pile position lofting: 20mm. (3) After the pile position lofting is correct through self-inspection, fill in the Application for Inspection of Construction Survey and Laying out. After Party A and the supervision unit jointly check the pile position and sign, the next process of construction will be carried out.
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: 10 Nov

Regulations for construction of long auger bored piles

1. Be familiar with geotechnical engineering investigation report, pile foundation engineering, foundation pit enclosure construction drawing design documents and drawing review data, and do a good job of construction plan and safety technology disclosure to operators. 2. Prepare special construction plan according to the characteristics of the project, including the following contents:
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: 08 Nov

Construction principle and characteristics of TRD construction pile

TRD construction principle: The TRD construction method is to insert the chainsaw-type knife port vertically on the ground, connect the knife and chain saw, and at the same time move its side, cut out the groove body and inject curing liquid to mix with the in-situ soil, and then stir to form the continuous wall under the cement soil of equal thickness, which plays the function of water stop. Then insert core materials such as H-shaped steel to form a rigid retaining wall and play the function of retaining soil.
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: 06 Nov

Brief introduction and characteristics of TRD pile construction

TRD pile construction has the following characteristics: 1. Adapt to a variety of working conditions; 2, the machine height is low, the safety performance is good; 3. Create high-quality underground diaphragm wall; 4, can form a multi-specification wall; 5. Large construction depth; 6, adapt to a wide range of strata; 7, continuous wall;
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: 04 Nov

Quality inspection of construction process of double wheel milling soil-cement mixing wall

Double wheel milling soil-cement mixing wall construction process quality inspection: 1, the wall construction process of quality inspection items should include: soil-cement mixing wall water glue ratio, cement content, admixture dosage, cement slurry pumping volume, the proportion of stable liquid; The sinking and lifting speed of the milling mixer and the construction interval time; The bottom and top elevation, wall thickness, verticality, wall position deviation and lap length of cement soil mixing wall; Specifications, welding quality, verticality, elevation and positioning of core components; Preparation and strength test of soil-cement test block.
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: 02 Nov

Advantages of dual-wheel milling technology for soil-cement mixing wall (CSM Method)

In the deep foundation pit enclosure engineering, when the surrounding environment of the foundation pit is complex, if the treatment is not good, the seepage phenomenon will easily occur, which will affect the construction quality of the whole project. Therefore, many deep foundation pits will use double-wheel milling and deep mixing (CSM) construction method water stop curtain, to provide good impermeability, ensure the quality of the project. Compared to other processes,CSMThe construction method has great advantages in controlling the continuity of deep piles.CSMThe method uses two groups of milling wheels to rotate and stir in horizontal axial direction......
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: 31 Oct

Construction safety and environmental protection of double - wheel milling cement - soil mixing wall

Safety and environmental protection of double-wheel milling soil-cement mixing wall construction: Before the construction of deep mixing soil-cement wall milling, the following surrounding environmental information should be mastered: (1) the structure, foundation form and current situation of the adjacent buildings (structures); (2) the protection requirements of neighbouring buildings (structures); (3) Location, type, material, service condition and protection requirements of adjacent pipelines.
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: 29 Oct

Double-wheel milling of soil-cement mixing wall

The following information should be available before the construction of double-wheel milling soil-cement mixing wall: Before the construction of milling deep stir soil-cement mixing wall, the construction site, surrounding environment, transportation routes of mechanical equipment and materials, working space, underground obstacles and geological conditions affecting the quality of the wall and construction safety should be investigated.
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: 28 Oct

Cage multi - directional cutting and mixing pile technology

The cage type multi-direction cutting and stirring pile is an improved large-diameter single-axis stirring pile. By adding a cage with blades on the outside of the stirring shaft, the inner and outer stirring blades are used to fully cut and stir the soft soil and curing agent, so as to greatly improve the quality and strength of the pile.
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: 27 Oct

Construction regulations for double wheel milling soil-cement mixed wall

Requirements for construction equipment and materials of double-wheel milling soil-cement mixed wall: Milling wheels with corresponding thickness should be selected according to wall thickness. For loose and weak soil layers, milling wheels with more milling teeth and stronger stirring ability should be selected. The milling wheel with less milling teeth and stronger cutting ability should be selected for dense and hard strata.
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Shanghai QiangJin Foundation Engineering Co., Ltd.

Tel:400-100-2850

Address:No. 289, Huixian Road, Jiading District, Shanghai

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