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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 ...
china latest news about Construction technology of offshore deepwater steel pipe piles

Construction technology of offshore deepwater steel pipe piles

September 24, 2024

1. Production of steel pipe piles and steel casing The steel pipes used for steel pipe piles and the steel casing used for the underwater part of boreholes are both rolled on site. Generally, steel plates with a thickness of 10-14mm are selected, rolled into small sections, and then welded into ...
china latest news about Introducing the New Fully Hydraulic Water Well Drilling Rig

Introducing the New Fully Hydraulic Water Well Drilling Rig

September 13, 2024

A new medium-sized, efficient, and multi-functional drilling rig has been making waves in the construction industry. The fully hydraulic water well drilling rig is equipped with advanced features that make it a versatile and powerful tool for various drilling applications. One of the key features of ...
china latest news about Construction of prestressed pipe pile foundation by drawing hole method

Construction of prestressed pipe pile foundation by drawing hole method

September 6, 2024

(1) The diameter of the pilot hole should not exceed 0.9 times the diameter of the pipe pile, and measures should be taken to prevent the collapse of the hole, and the depth of the pilot hole should not exceed 12m; (2) It is advisable to use long auger drill hole, long auger drill can drill through ...
china latest news about Horizontal Directional Drilling Rig: Revolutionizing Underground Construction

Horizontal Directional Drilling Rig: Revolutionizing Underground Construction

July 19, 2024

Horizontal directional drilling (HDD) has emerged as a game-changing technology in the field of underground construction, and the key to its success lies in the horizontal directional drilling rig. This innovative equipment has revolutionized the way underground infrastructure is installed, allowing ...
china latest news about Hydraulic pile breakers: how do they work?

Hydraulic pile breakers: how do they work?

August 6, 2024

Hydraulic pile breakers are powerful machines used in construction and civil engineering to break large piles into smaller parts. These machines are critical for projects involving the installation or removal of piles, such as building foundations, bridges, and other structures. In this article, we ...
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