Explore the world of foundations and uncover the mystery of uplift resistance! The Foundation Academy set off a technical storm today, welcoming the twelfth session of "My Technology, My Presentation" — U-shaped pipe/bullet-head pressure-type uplift-resistant pile technology, a technological revolution that overturns tradition! The event invited Wang Shuguang, Deputy Chief Engineer of Jianyan Foundation Engineering Co., Ltd., to serve as the presiding expert, and Li Shuai, Deputy Manager of the Branch of Jianyan Foundation Engineering Co., Ltd., to serve as the keynote expert, to take you into the future of the foundation field and unlock the uplift-resistance challenges in building and municipal engineering!

In the field of foundation engineering, uplift-resistant piles and anti-floating anchors have always been the most common methods for solving foundation anti-floating or uplift-resistance problems. However, conventional methods have many drawbacks: small anchor bodies, insufficient tensile strength, difficulty in ensuring durability, cumbersome crack control, and high engineering costs. To overcome these problems, leveraging the strength and stability of concrete and the high tensile strength of steel strands, we integrated the advantages of uplift-resistant piles, anti-floating anchors, concrete, and steel strands, and successfully developed bullet-head and U-shaped pipe pressure-type uplift-resistant pile technology. This technology is widely applicable to building engineering, municipal engineering, underground engineering, and tall structures, providing solutions for anti-floating or uplift-resistance problems in soil and rock strata. Let us advance together to new heights in the field of science and technology and create a new future for foundation engineering!

During the live broadcast, we gained an in-depth understanding of the unique features and advantages of the pressure-type uplift-resistant pile technology. By combining a bullet-head bearing body or U-shaped pipe bearing body with unbonded prestressed steel strands into an assembly, inserting it into the concrete of the pile body, and then locking the prestressed steel strands at the top of the pile through a new locking device, and casting it within the foundation concrete. This technology has the following features:

01 - Good durability

Under service loads, the pile body concrete remains in a compressed state, and the pile body does not develop cracks, so it can be applied to pile foundation projects with a Class I crack control level.

02 - High uplift bearing capacity

The load transfer characteristics and stress mechanism of pressure-type uplift-resistant piles differ from those of conventional uplift-resistant piles. The uplift displacement at the pile top is smaller than that of conventional uplift-resistant piles, the uplift bearing capacity is high, and the uplift coefficient can be taken as 0.85~1.0.

03 - Simple and reliable pile-top locking and waterproofing structure

A new locking device is installed at the pile top and anchored inside the foundation. The locking method is simple and reliable, with few waterproofing nodes and good waterproofing performance.

04 - High cost-effectiveness and time savings

Compared with conventional uplift-resistant piles or anti-floating anchors, it can save 10%~30% of engineering costs and greatly save construction time.‍

In the twelfth session of "My Technology, My Presentation" of the Foundation Academy series of activities, we conducted an in-depth discussion of the innovative U-shaped pipe/bullet-head pressure-type uplift-resistant pile technology. The introduction of this technology not only solves the problems existing in conventional uplift-resistant piles and anti-floating anchors, but also provides a brand-new solution for building engineering and municipal engineering. Through the live broadcast and presentation, we gained a deeper understanding of the features and advantages of this technology. Let us all look forward to the innovation this technology will bring to the field of foundation engineering, and inject more stability and reliability into future building engineering and municipal engineering. Let us move forward hand in hand and jointly create a beautiful future for foundation engineering!