Recently, Research, Development and Application of Dynamic Compaction Equipment and Technology was officially published by China Architecture & Building Press. Edited by Wen Zhe, with Yu Yongtang and Dong Baozhi as deputy editors, it is a joint compilation by industry backbones like Shanxi Jinbaodao Foundation Engineering Co., Ltd. and Northwest China United Engineering Design & Research Institute Co., Ltd. and universities, sorting out dynamic compaction technology’s development and summarizing latest achievements in equipment R&D, process optimization, intelligent quality monitoring and environmental impact assessment.

Introduction

Compilation Background

With the implementation and advancement of major national strategies including the Belt and Road Initiative and the New Era Western Development Drive, China’s large-scale infrastructure, industrial and urban construction have entered a period of vigorous development. Meanwhile, under the national policy of safeguarding the "red line of 180 million mu of arable land", the amount of available construction land has been decreasing year by year. To expand construction land, coastal cities have carried out reclamation projects, while cities in southwest mountainous areas and northwest loess hilly-gully regions have launched mountain excavation for land creation. These measures have effectively resolved the conflict between national arable land protection and the shortage of construction land for engineering projects. The Belt and Road Initiative runs through the Eurasian and African continents. The region boasts a wide distribution of diverse special rock and soil masses with complex engineering properties, which pose severe threats to the smooth construction and safe operation of infrastructure along the route. There is an urgent need for economical, efficient and eco-friendly ground treatment methods to ensure project quality and safety while achieving sustainable development. As one of the commonly used ground treatment methods, dynamic compaction gives full play to the bearing capacity of rock and soil itself without consuming steel or cement, aligning with the direction of China’s dual-carbon strategy. In recent years, the soil layer thickness reinforced by dynamic compaction has been increasing, geological conditions and construction environments have become more complex, and more engineering and technical challenges have emerged. Thus, there is an urgent demand for innovation in dynamic compaction equipment and construction technology, requiring new breakthroughs and development in improving operation efficiency, enhancing energy level, upgrading intelligentization and expanding diversified applications.
        Innovative Breakthroughs

Supported by national and corporate research projects, the author's team carried out research and application on dynamic compaction equipment and technology in conjunction with major projects such as the anode material project in Lanzhou New Area and the expansion and reconstruction project of Kunming Changshui Airport, achieving systematic innovative results: developed non-decoupling hybrid, 50,000 kN·m ultra-high energy level, extended-range dynamic compactors and core components, filling the technical gap in equipment above 30,000 kN·m; optimized construction parameters and processes, summarized the layered progressive reinforcement process, realizing one-time treatment of large-area complex deep foundations; clarified the vibration propagation law of dynamic compaction in miscellaneous fill sites; developed intelligent monitoring and lidar-based tamping settlement monitoring systems; summarized application cases of dynamic compaction in high fill foundations such as loess.

Chapter Contents

Chapter Overview: The book consists of 7 chapters. Chapter 1: Current status and core issues of dynamic compaction equipment and technology; Chapter 2: Dynamic compactors (non-decoupling hybrid type, combined large-chassis ultra-high energy level type, extended-range type, etc.) and supporting machinery; Chapter 3: Dynamic compaction parameter optimization, ultra-high energy level one-time deep foundation treatment, and dynamic compaction replacement technology under industrial plant columns; Chapter 4: Intelligent monitoring system, digital cloud platform, and improved lidar-based tamping settlement monitoring technology; Chapter 5: Quality inspection indicators and technologies for dynamically compacted foundations, including rapid compaction detection and Beidou-based integrated settlement monitoring methods; Chapter 6: Sources, monitoring and evaluation of dynamic compaction vibration and noise, and their propagation laws in miscellaneous fill sites; Chapter 7: Application of dynamic compaction method in high fill foundations such as loess and miscellaneous fill through major projects. This book serves as a reference for engineers and researchers in geotechnical and structural engineering, and can also be used as a teaching material for relevant majors in colleges and universities.