China Deep Foundation Engineering Network News "Foundation Expert - Old Zhu's Lecture Hall" is one of the series of public welfare activities of the Foundation Academy, and its regular guest is the well-known researcher Zhu Chunming from the Institute of Foundation Engineering of the China Academy of Building Research. The program is broadcast punctually at 7 p.m. every Tuesday, with each episode centering on one topic. The four consecutive episodes not only featured a unique style but also shared content that was widely acclaimed by friends in the industry, attracting a large number of fans.

Researcher Zhu Chunming said he hopes more people can hear his Zhejiang-accented voice, see his enthusiastic body language, and feel his sincere emotions. For him, sharing knowledge is not only the greatest joy but also a manifestation of his love for the geotechnical engineering industry. Qian Lihang, a well-known expert in foundation engineering in China, once inscribed for "Old Zhu's Lecture Hall" the words "preaching, imparting knowledge, and resolving doubts," giving this activity a deeper meaning.

The study of "interaction" has been a hot topic in civil engineering for nearly 40 years, and the efforts and legacy of several generations have yielded fruitful results. In the fourth live broadcast, Researcher Zhu Chunming invited Professor Zhou Feng, Dean of the School of Transportation Engineering at Nanjing Tech University, as a guest for a wonderful academic exchange, sharing "Design Theory and Engineering Application of Pile-Raft Foundations with Controllable Stiffness."

Addressing the difficulties and pain points in the pile-raft foundation design of high-rise buildings, Professor Zhou Feng innovatively proposed the concept and method of active control of pile-raft foundations, and through a series of self-developed pile-top stiffness adjustment devices, formed a complete set of design theories and methods for pile-raft foundations with controllable stiffness. After explaining the working mechanism of pile-raft foundations with controllable stiffness, he focused on introducing their specific engineering application fields and, combined with detailed engineering cases, analyzed the expected economic and social benefits that can be brought by applying pile-raft foundations with controllable stiffness. In addition, based on the engineering practice of nearly more than 400 high-rise and super high-rise buildings, he also shared the favorable social evaluation received by raft foundations with controllable stiffness.

Professor Zhou Feng also reviewed his experience in researching the interaction between soil and structures, discussed the current downturn of the civil engineering industry from the perspective of higher education, and offered valuable advice to young engineers. The live broadcast room was highly interactive, with Researcher Zhu Chunming and Professor Zhou Feng actively answering questions from netizens. The two-hour live broadcast continued to heat up and reached new highs.