Abstract:This paper reviews the progress of PC beam jacking construction technology in China in the past 20 years, points out some existing problems and suggestions for improvement, and looks forward to the future development prospect.

Abstract:1. Design of ZLD automatic continuous jacking system; 2. Principle of ZLD automatic continuous jacking system; 3. Application of ZLD in multi-point continuous push; 4. Application of ZLD automatic continuous jacking system in lifting; 5. Application of ZLD automatic continuous jacking system in rotation.

Abstract:Nowadays, geotechnical anchoring technology is used a lot in the world, and it is especially widely used in Japan. Because Japan is an island country and earthquake-prone country, rock and soil anchorage technology is very important for the prevention and control of landslides and rockfalls. Therefore, the research on geotechnical disconsolidation is also very active. The following is a brief introduction to the research on geotechnical anchorage in Japan.

Abstract:It has been pointed out that there are various problems in the original anticorrosion methods of cable-stayed bridge cables, and new anticorrosion methods are proposed to solve these problems. In some technical research committees on cable-stayed bridge cables, it is very active to summarize and summarize what is seen and heard about the design, manufacture, erection, maintenance and maintenance of diagonal cables and their trends. Against this background, the University of Texas conducted an international survey in March 1993 to determine the current technological trends by collecting opinions from various industries related to the design, manufacture, erection, and long-term preservation of cable stays.