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china latest news about Is cement soil pile reliable as a foundation pit support method?

Is cement soil pile reliable as a foundation pit support method?

January 26, 2025

Cement soil wall is a non mainstream form of support structure, suitable for narrow soil conditions, and not widely used in practical engineering applications.Cement earth walls are generally used in soft soil foundation pits with small depths.Under these conditions, the anchor rod does not have a ...
china latest news about Skills for dealing with several special problems in manual bored pile construction

Skills for dealing with several special problems in manual bored pile construction

January 15, 2025

Manual bored pile construction is convenient, does not require large machinery and equipment, and is cost-effective. Therefore, it is widely used in roads and civil buildings. However, the underground working conditions of bored piles are poor, the environment is harsh, and the labor intensity is ...
china latest news about Two technical methods for improving the bearing capacity of bored piles

Two technical methods for improving the bearing capacity of bored piles

December 26, 2024

At present, the commonly used technical methods to improve the vertical bearing capacity of a single cast-in-place pile include the expansion method and the grouting method after drilling the cast-in-place pile. In the same stratum, the pile end resistance is directly proportional to the pile end ...
china latest news about How is the diaphragm wall constructed

How is the diaphragm wall constructed

December 12, 2024

Diaphragm wall is a diaphragm wall with anti-seepage (water) retaining and load-bearing functions, formed by excavating a narrow and deep trench underground with the help of excavation machinery and mud protection, and constructing suitable materials such as reinforced concrete in the trench. It is ...
china latest news about Construction technology of long spiral bored pile

Construction technology of long spiral bored pile

December 6, 2024

1、 Process characteristics: 1. Long spiral drilled cast-in-place piles generally use superfluid concrete, which has good flowability. Stones can suspend in the concrete without sinking, and there will be no segregation. It is easy to put it into a steel cage; (Superfluid concrete refers to concrete ...
china latest news about Key points for implementing pile foundation testing

Key points for implementing pile foundation testing

November 29, 2024

The starting time of pile foundation testing should meet the following conditions: (1) The concrete strength of the tested pile should not be lower than 70% of the design strength and should not be lower than 15MPa, using strain method and acoustic transmission method for testing; (2) Using the core ...
china latest news about 7 methods for pile foundation testing

7 methods for pile foundation testing

November 19, 2024

1. Low strain detection method The low strain detection method uses a small hammer to strike the pile top, and receives stress wave signals from the pile through sensors bonded to the pile top. The dynamic response of the pile-soil system is studied using stress wave theory, and the measured ...
china latest news about Reasons and preventive measures for causing steel cage to float up

Reasons and preventive measures for causing steel cage to float up

November 1, 2024

The reasons for causing the steel cage to float up are generally: (1) The initial and final setting times of concrete are too short, and the concrete clumps in the holes are too early. When the concrete poured from the conduit rises to the bottom of the steel cage, the continued pouring of concrete ...
china latest news about Introduction to CFG pile

Introduction to CFG pile

October 17, 2024

CFG (Cement Fly ash Grave) pile, also known as cement fly ash gravel pile in Chinese, is a high bonding strength pile formed by uniformly mixing cement, fly ash, gravel, stone chips or sand and water in a certain mix proportion. It forms a composite foundation together with the soil between the ...
china latest news about Construction method of drilling bore piles with rotary drilling rig in hard limestone formations

Construction method of drilling bore piles with rotary drilling rig in hard limestone formations

October 12, 2024

1. Preface Rotary drilling rig is a construction machinery suitable for drilling operations in building foundation engineering. In recent years, it has become the main force in pile foundation construction in bridge construction in China. With different drilling tools, rotary drilling rig is ...
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