Blog_BVEM | Focus on vibration punching method

Beijing Zhenchong Engineering Machinery Co., Ltd.

yangx@bjvibro.com

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The effect of vibro-compaction on soft soil reinforcement

2021-04-15

Gravel piles are a type of loose pile, mainly made of unbound gravel (pebbles). After forming holes in weak foundations using vibration, impact, or water flushing, gravel (pebbles) are pressed into the holes to form a dense pile body with a large diameter, which is a composite foundation reinforcement pile consisting of gravel (pebble) piles and soil between piles.

Salute to the people of Zhenchong who are fighting against the wind and sand

2021-03-16

Recently, the second phase of the rubber dam section of the vibrating stone pile project in the Xianghe section of the Beiyun River ecological comprehensive improvement project is nearing completion. The owner and China Communications Construction First Highway Bureau have given high recognition to our Beijing Vibration Engineering Machinery Co., Ltd.'s team collaboration, construction efficiency, and construction quality. In view of our company's outstanding achievements, Hebei Water Conservancy has signed a new vibrating stone pile project in the ship lock section with our company, and the opening ceremony was held today. We wish the project a successful start! Our team will surely continue to strive for excellence and achieve greater success.

Salute to the people of Zhenchong who are fighting against the wind and sand

2021-03-16

The Municipal Meteorological Observatory upgraded and issued a yellow sandstorm warning at 7:25 AM on March 15, 2021: Obvious sand and dust weather has appeared in the city, and visibility is expected to be less than 1000m in most areas from now until noon on the 15th.

About Vibratory Hammer

2021-03-09

Vibratory hammer is a special tool used in vibratory compaction construction. Its working principle is that the submersible motor drives the eccentric block inside the vibrator to generate centrifugal force through the coupling, making the whole vibratory hammer generate horizontal vibration. Vibratory hammer can be used in the construction of filling vibratory piles and compaction vibratory piles. It is suitable for the reinforcement of foundations such as gravel soil, sand soil, silty soil, clay soil, artificial fill and collapsible soil, as well as the densification and liquefaction resistance treatment of various liquefiable soils. After vibratory treatment, the stratum can withstand a certain dynamic load, which can improve the bearing capacity of the foundation, reduce the settlement, increase the stability of the foundation, and improve the anti-liquefaction capacity of the earthquake.

About Vibratory Hammer

2021-03-09

Vibratory hammer is a special tool used in vibratory compaction construction. The working principle is that the submersible motor drives the eccentric block inside the vibrator through a coupling to generate centrifugal force, making the entire vibratory hammer generate horizontal vibration. Vibratory hammers can be used in the construction of filling vibratory piles and compaction vibratory piles. It is suitable for the reinforcement of foundations such as gravelly soil, sandy soil, silty soil, clay, artificial fill, and collapsible soil, as well as the densification and liquefaction resistance treatment of various liquefiable soils. After vibratory treatment, the stratum can withstand a certain dynamic load, which can improve the bearing capacity of the foundation, reduce settlement, increase the stability of the foundation, and improve the liquefaction resistance capacity. Technological Development Vibratory hammers originated in Germany. A large number of engineering practices have proved that vibratory compaction technology is the preferred scheme for seismic reinforcement of soft foundations. After the Tangshan earthquake in 1976, China paid great attention to the research on seismic reinforcement of building foundations. The former Ministry of Water Resources and Electric Power entrusted the Beijing Survey and Design Institute to establish a vibratory compaction research group, which independently developed a 30KW vibratory hammer. It was successfully applied to the seismic reinforcement project of the fine sand dam foundation of the GuanTing Reservoir in Beijing. In 1982, a 75KW high-power vibratory hammer was developed, which greatly improved the application range of vibratory compaction technology. From 1976 to 1985, the vibratory compaction research and experimental group successively completed dozens of vibratory compaction stone column projects, including the引滦工程, the Lagdo Reservoir in the Republic of Cameroon, and the Jilin QianGuo Refinery. Power Model At present, Beijing Vibratory Engineering Machinery Co., Ltd. has accumulated 40 years of experience in the design, construction, improvement, and development of vibratory hammers in China, forming a series of domestic electric vibratory hammers with multiple models targeting different strata. According to the outer diameter, they are divided into 325, 377, and 426 series. The power has developed from 30KW to 260KW.

Supporting the key infrastructure treatment project for the Hongshui River irrigation project in Dabieshan Revolutionary Old Area, Henan Province

2021-03-03

The Huaihe River Water Supply and Irrigation Project in Dabie Mountain Revolutionary Old Area of Henan Province is a major project of the 13th Five-Year Plan and one of the first ten water conservancy projects implemented by Henan Province under its "Four Water Management" initiative. The project mainly includes three parts: Xixian hub project, urban water supply project, and irrigation area backbone project. A total of 689 buildings (including 1 Xixian hub, 1 urban water supply pumping station, and 687 irrigation area buildings) will be newly built or rebuilt. The project will form a layout of Huaihe River water supply and irrigation project controlled by the Xixian hub on the main stream of the Huaihe River and supported by urban water supply and irrigation canals, improving the water resources comprehensive utilization system in this revolutionary old area. The hub project's vibro-compaction piles are arranged in the areas of the regulating gate chamber, upstream pavement, downstream stilling basin, upstream bottom protection and anti-scour channel, downstream dyke and anti-scour channel, and left and right abutment wingwalls. The piles are 7-13.5m deep, with spacing of 1.7m and 2.5m; the design requirements are bearing capacity of 180kPa and 125kPa, respectively, relative density of the foundation sand layer ≥0.7, and the number of blows of the heavy-duty dynamic probing not less than 8 blows. The construction equipment for this project is manufactured by Beijing Vibro Engineering Machinery Co., Ltd., including 75KW and 130KW vibrators. We are honored to contribute to the construction of our motherland.

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