China Deep Foundation Engineering Network News  On the evening of August 20, 2024, the sixth episode of the exciting live broadcast event "Foundation Expert - Lao Zhu Lecture Hall" was successfully held, attracting numerous professionals and technology enthusiasts in the field of building foundation engineering. The event specially invited Chairman Jin Yawei of Jiangsu Xintai Geotechnical Technology Co., Ltd. to discuss the cutting-edge applications of pressurized vacuum preloading technology together with resident guest researcher Zhu Chunming and program host Xu Xin.

Chairman Jin Yawei is the founder of Jiangsu Xintai Geotechnical Technology Co., Ltd. and has long focused on the research, development, and application of vacuum preloading technology for weak clay, silt, and sludge treatment. In this episode's presentation titled "Case Analysis of Key Technologies in Pressurized Vacuum Preloading," he provided an in-depth explanation of the wide application of this technology and its significant advantages. Chairman Jin pointed out that traditional vacuum preloading technology faces many challenges when treating soft soil foundations and often cannot meet the requirements of high-strength and highly compressible soil layers. Pressurized vacuum preloading technology was developed precisely to solve these problems.

Company Honors

Chairman Jin and his team have achieved remarkable scientific research results in this field, holding 7 invention patents, 5 international patents, 25 utility model patents, and 60 cooperative patents. Among them, the "High-Efficiency Anti-Clogging Treatment Technology for Drainage Bodies in Ultra-Soft Soil Foundations" won the Second Prize of the 2020 National Technological Invention Award; "Large-Area Deep Soft Soil Reinforcement Treatment Technology and Engineering Application" won the First Prize of the 2019 Jiangsu Provincial Science and Technology Award; "Key Technology for Composite Vacuum Preloading Foundation Treatment of Dredged Silt" won the First Prize of the Zhejiang Provincial Science and Technology Progress Award; "Key Technologies for Construction of Durable Expressway Subgrades and Pavements in Plain Areas" won the First Prize of the Hebei Provincial Science and Technology Award; and "Large-Area Ultra-Soft Soil Reinforcement Technology and Application in Coastal Areas" won the First Prize of the Tianjin Municipal Science and Technology Progress Award. These achievements further demonstrate the broad application potential of pressurized vacuum preloading technology in soft soil foundation treatment, resource utilization of sediments in lake, river, and reservoir areas, and sludge treatment.

Chairman Jin emphasized that pressurized vacuum preloading technology not only significantly improves foundation bearing capacity (80-120 kPa) but also controls post-construction settlement to below 5 cm, providing strong support for urban infrastructure construction such as railways, highways, and port terminals. This technology emphasizes environmental protection and energy conservation and covers five major innovations: new anti-clogging materials, soil dewatering followed by pressurization technology, seamless connection technology, water-gas separation technology, and coupling agent sealing technology, demonstrating comprehensive breakthroughs in construction processes.

Detailed Explanation of Successful Cases

During the presentation, Chairman Jin combined practical cases to demonstrate the successful application of this technology in multiple major projects, especially achieving significant investment savings in the Tianjin Xingang Container Center Station and the JD Asia No. 1 Zhaoqing Dinghu Logistics Park projects. These successful cases not only demonstrate the advantages of pressurized vacuum preloading technology but also reflect its important role in promoting green construction and sustainable development.

Reverse Pressurized Vacuum Preloading

Interactive Low-Position Dewatering Pressurized Vacuum Preloading

Preliminary Design of Pressurized Thermosensitive Phase-Change Consolidation Method

Preliminary Design of Pressurized Thermosensitive Consolidation Method

In addition, Chairman Jin Yawei also introduced **scientific research achievements such as reverse pressurized vacuum preloading, interactive pressurized vacuum preloading, inverted siphon pressurized vacuum preloading, and pressurized thermosensitive reverse vacuum preloading. These innovative achievements demonstrate enormous economic and social benefits in terms of high efficiency, energy conservation, and resource savings, and especially have broad prospects for promotion and application in helping achieve the "carbon peak and carbon neutrality" goals.

This live broadcast event not only provided the public with a platform to learn about cutting-edge engineering technology but also demonstrated the guest's profound insights into and enthusiasm for industry development. Chairman Jin Yawei's presentation sparked lively discussion and reflection among participants, inspiring more practitioners to devote themselves to technological innovation and practice in the field of foundation engineering.

As an important knowledge-sharing platform in the industry, "Foundation Expert - Lao Zhu Lecture Hall" will continue to be committed to promoting technological innovation and development in the field of foundation engineering. In the future, it will invite more outstanding experts and entrepreneurs to jointly explore cutting-edge technologies and applications in the industry.