Driving Prismatic Steel Reinforced Concrete Piles

The mass vibration driving of heavy steel reinforced concrete piles was first done in the beginning of the 1950's with the aid of vibratory drivers of the VP-1 and VP-3 types (B. P. Tatarnikov). Several tens of thousands of steel reinforced concrete piles with a cross section up to 45 x 45 cm and a … Continue reading Driving Prismatic Steel Reinforced Concrete Piles

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Installation and Extraction of Metal Sheet Piling

Editors note: from a practical, equipment standpoint, this is one of the most interesting sections of the book. It describes the first use of vibratory hammers on an actual project, and an interesting description of driving sheet piles and problems that can arise during that installation. The vibratory method of installation and extracting piles began … Continue reading Installation and Extraction of Metal Sheet Piling

Vibrating Drivers and Impact-Vibration Hammers

It was previously noted that vibration machines are classified with respect to dynamic action on the element to be driven (extracted) into vibrating drivers, impact-vibrating drivers-impact-vibration hammers, and also combined ones, in which both vibration and impact-vibration modes or their combinations can be realized. In most vibrating drivers and impact-vibration hammers the power of the … Continue reading Vibrating Drivers and Impact-Vibration Hammers

Methods for Approximate Calculation of the Parameters of Vibratory Drivers and Impact-Vibration Hammers

Calculation of the parameters of longitudinal-action vibrational pile drivers. Note: this part of the chapter is basically the "Savinov and Luskin" method for determining the drivability of piles by vibration which goes back to the late 1950's. The rationale for this is discussed in my paper Reconstructing a Soviet-Era Plastic Model to Predict Vibratory Pile … Continue reading Methods for Approximate Calculation of the Parameters of Vibratory Drivers and Impact-Vibration Hammers

Characteristics of the Dynamics of Vibration and Impact-Vibration Drivers

As indicated above, the questions of nonuniformity in the rotation of eccentrics and the limited drive power are as a rule considered in studying dynamic loads in the drive of the vibrodriver and vibrating hammer, and also in determining the power required. Nonuniformity in the rotation of the eccentrics is caused by: variation in the … Continue reading Characteristics of the Dynamics of Vibration and Impact-Vibration Drivers

Selection of the Type of Dynamic Action and Determination of the Soil Resistance

In selecting the type of dynamic action, it is necessary to take into account the following basic factors: mass, dimensions arid shape of the elements driven or extracted, soil conditions and the technological characteristics of the work, performed. We shall examine the influence of each of the said factors on the choice of the type … Continue reading Selection of the Type of Dynamic Action and Determination of the Soil Resistance

Driving Under the Action of Alternating Impact Loads

Experimental data and experience in industrial application revealed the high efficiency of the two-impact mode in driving various elements into the ground, which is due to the possibility of driving with different vibration parameters (including at high frequencies) without the danger of perturbing the operating stability of the impact-vibration mechanism. The calculation scheme of driving … Continue reading Driving Under the Action of Alternating Impact Loads

Sinking of Tubular Elements Under the Action of Longitudinal Impacts and Rotational Oscillations

Experience on the use of vibrating hammers with a longitudinal action revealed their high efficiency in the sinking of the various elements. In addition, during the operation of these hammers it turned out that they are short-lived and relatively energy-consuming. These two shortcomings are due primarily to the high impact velocities of the vibrating hammers … Continue reading Sinking of Tubular Elements Under the Action of Longitudinal Impacts and Rotational Oscillations

Immersion and Extraction Under the Action of Longitudinal Blows

Just as in the study of the vibration sinking process, we limit the steady periodic movement of the impact portion of the vibrating hammer to a period equal to the time of one revolution of the eccentrics. Besides the assumptions in Section 5, we introduce the following also: the impact between the vibrating hammer* and … Continue reading Immersion and Extraction Under the Action of Longitudinal Blows

Immersion and Extraction by Longitudinal-Rotational Oscillations

The annular cross-section of hollow cylindrical elements reveals the possibility of using longitudinal and rotational oscillations when sinking these elements into the ground. Early experience showed that, in order to achieve breakthrough into the adjacent ground with pipes 146 and 273 mm in diameter, the amplitudes required if rotational oscillation is used were an average … Continue reading Immersion and Extraction by Longitudinal-Rotational Oscillations