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: 17 Apr

Stability control of CSM construction groove wall and corresponding measures

Groove wall stability is the most important task in diaphragm wall construction. According to the characteristics of the project, the following technical measures are formulated for the key points affecting groove wall stability.
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: 15 Apr

Top drawing of joint box during CSM construction

Top pulling operation of joint box during CSM construction: joint box should have enough stiffness, and flow should be prevented during concrete pouring. Top pulling of lock pipe should be combined with concrete pouring, and concrete pouring record should be used as the control basis for top pulling lock pipe time.
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: 13 Apr

Concrete preparation and technical quality requirements for construction of pressed-grouting pile

Concrete preparation and technical quality requirements for press-poured pile construction: (1) Concrete preparation for construction: This project uses commercial concrete. The site quality member accepts the performance indicators and grading of concrete on the scene. (2) Technical quality requirements: A. The supply station must provide the Quality Certificate of Ready-mixed Concrete and the concrete grading list;
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: 11 Apr

CSM construction of concrete

1. The gradation of concrete in the groove section of this project not only meets the requirements of structural strength, but also meets the requirements of underwater concrete construction, with good workability and fluidity. The slump of concrete shall be 180mm ~ 220mm.
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: 09 Apr

CSM construction mud treatment work

1. Slurry storage: Semi-buried brick slurry pool is used for slurry storage. Set up mud pool and transfer pool according to the actual situation on site. The capacity of the slurry pool containing the slurry should be able to meet the slurry consumption during the trough construction.
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: 07 Apr

CSM construction of bottom cleaning wall painting work

1. In the process of bottom cleaning and wall brushing, natural precipitation is also carried out in the trough section. After the end of wall brushing, the bottom cleaning is started until the feeling of hitting the hammer appears, indicating that the sediment at the bottom of the trough is cleaned in place.
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: 05 Apr

CSM construction guide wall method

CSM construction guide wall method measurement setting out: according to the underground diaphragm wall axis to determine the guide wall excavation position; After the completion of measurement setting out, please check the general contractor; Excavation: After measuring and setting out, sprinkle white gray line, and excavate guide wall by combining mechanical excavation and manual dressing. The excavation elevation is controlled by manual dressing;
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: 03 Apr

CSM construction method for groove construction assurance measures

The main reason for the jam is that the upper neck shrinkage leads to the width of the groove becomes smaller and the jam is stuck. Therefore, as long as the mud is well controlled, the phenomenon of jam can be prevented.
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: 01 Apr

CSM construction method of steel cage can not be below the reason

CSM construction method for the reinforcement cage can not be placed in place to prevent and deal with the measures of groove perpendicularity influence of groove perpendicularity is the first key to ensure the smooth discharge of the reinforcement cage, for the "one" type groove section of the perpendicularity must be controlled within the design requirements to ensure that the reinforcement cage smoothly into the groove; The perpendicularity of the special-shaped groove section must be controlled within the design requirements to ensure that the steel cage can be smoothly sloted.
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: 30 Mar

Production and technical requirements of reinforced cage of pressed-grouting pile

(1) The specifications and quality of the steel bars entering the site shall meet the design requirements, and a warranty shall be attached. Raw materials shall be sampled and submitted for inspection according to the construction code. (2) Before making the steel cage, straighten the main reinforcement, remove the dirt and rust on the surface of the steel bar, and accurately control the length of the steel bar. (3) The steel cage is made of ring mold:
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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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