"Rayleigh wave propagation characteristics and engineering application in foundation", this research result is also the result of the laboratory entering the site. This achievement first blossomed in 1989. That year, the runway of Hangzhou Jianqiao Airport suddenly collapsed and cracked in a large area. Will reconciliation continue? Will the crack expand? Can the plane take off and land? All the problems were unknown before the overhaul. However, according to the technology at that time, if maintenance was needed, the runway would have to be "cut open", so that the airport would have to be closed and the plane would have to be grounded. However, as the only airport in Hangzhou, Jianqiao Airport undertakes all the civil aviation and air force tasks in Hangzhou. Is the loss of suspension too great? The airport is in a dilemma. It is Chen's new technology that has solved the airport problem. This new technology can be used to carry out foundation tests without excavating the road surface. In this way, under the condition of taking off and landing as usual, after two days and one night of continuous testing, the runway data obtained were comprehensively analyzed, and finally the "cause" of the airport was found, and a set of "treatment plan" was quickly formulated to "prescribe the right medicine" for the airport.
Project name: Rayleigh wave propagation characteristics and engineering application in foundation; Award category: 1996 second prize of national scientific and technological progress; Rank of completed personnel: second.
2. In 2009, Professor Chen's project "Key Technology and Engineering Application of Disaster Control in Structural Soft Soil Foundation" won the second prize of National Science and Technology Progress Award.
According to the strong structural characteristics of soft soil, this project, based on the idea of quantitative evaluation and effective control of the sudden change process of soft soil foundation from deformation to failure, realized the real-time monitoring of shear wave velocity and void ratio in the sudden change process of elements, physical models and sites through self-developed experimental equipment, and revealed the sudden change law of structural soft soil; The consolidation theory of structural soft soil foundation and the control criteria of total settlement, post-construction settlement and cyclic cumulative settlement based on structural yield stress are put forward for the first time, and the design method of deep structural soft soil pile-raft foundation, subgrade pallet pile treatment technology and commercial software POGAP are developed, which realizes the effective control of major engineering settlement of deep soft soil foundation. The method of judging the shear wave velocity of earthquake liquefaction based on initial liquefaction is put forward for the first time, and the anti-liquefaction technology of soft foundation to control the shear wave velocity of site is developed, which solves the problems of liquefaction judgment and anti-liquefaction treatment of soft foundation in high intensity area. Authorized 3 national invention patents and 3 utility model patents, and obtained software copyright 1. Participated in editing two national electric power industry and local technical standards, which provided important technical basis for two national transportation industry technical standards. Published academic papers 106, including 32 sci papers and 1 EI 4 1 paper; He cited the paper 3 18 times.
The project has been applied to more than 60 major projects in 32 units and the site survey and reconstruction of Wenchuan earthquake liquefaction site, which has achieved remarkable social and economic benefits and improved the use safety and disaster prevention and mitigation level of major projects in soft soil foundation in China.
Project name: key technology and engineering application of disaster control in structural soft soil foundation; Award category: 2009 national science and technology progress second prize; Completed by: Zhejiang University and Zhejiang Electric Power Design Institute; Completed personnel: Chen, Chen, Ling Daosheng, Zhu, Zhou Yanguo, Tong Jianguo,,, Zhan Liangtong, Bo Huang, Bian Xuecheng,, Xu.
3.20 12 Professor Chen was in charge of the project "Mechanism of Environmental Soil Mechanics and Key Technologies and Applications of Disaster Prevention in Municipal Solid Waste Landfills" and won the second prize of National Science and Technology Progress Award.
In view of the characteristics that the organic matter and water content of municipal solid waste in China are obviously higher than those in developed countries in Europe and America, it is difficult to prevent and control three disasters, namely, strong biodegradability, large landfill leachate output and high water level, unstable landslide, leachate leakage and landfill gas diffusion. In this project, a coupled model of landfill degradation-seepage-compression was established, and an evaluation method of landfill leachate yield and landfill gas collection rate was put forward. Three unique forms of landfill leachate in China high organic solid waste landfill site and three disasters induced by them were discovered and revealed. The landfill gas collection and transportation technology based on liquid-gas separation, anti-pollution barrier technology based on life-cycle service and landfill stability control and expansion technology have been developed, which have solved three key problems of landfill disaster control and resource utilization in China.
The project is authorized with national invention patents 1 1, 5 utility model patents and 2 software copyrights; He published 88 papers in academic journals, of which 33 were included in SCI, and he cited 67 1 time; Based on the innovative technology and method of this project, the national industry standard "Technical Specification for Geotechnical Engineering of Domestic Waste Sanitary Landfill" (CJJ 176-20 12) was compiled, which is considered to fill the technical gap in geotechnical engineering of domestic waste sanitary landfill. The project has realized the transformation of landfill design from traditional soil mechanics method to environmental soil mechanics method, and the transformation of landfill operation from simple consumption of municipal solid waste to efficient utilization of landfill gas and landfill land. After appraisal, it has reached the international advanced level as a whole, and has been selected as the outstanding achievement of the key support project of the 11th Five-Year Plan of the National Natural Science Foundation.
The technology of this project has been applied in the construction, expansion and substandard treatment project of the national 1 12 large-scale landfill, which has effectively prevented the unstable landslide and liquefied gas pollution in the landfill, significantly improved the landfill gas collection rate and landfill volume per unit land area, achieved great social, environmental and economic benefits, and promoted the scientific and technological progress of the industry.
Project name: Mechanism of environmental soil mechanics and key technology of disaster prevention and control in municipal solid waste landfill and its application; Award category: 2065438+2002 National Science and Technology Progress Second Prize; Completed by: China Huabei Municipal Engineering Design and Research Institute of Zhejiang University, Shanghai Municipal Engineering Design and Research Institute (Group) Co., Ltd.; Completed by: Chen, Zhan Liangtong,,, Li, Lin Wei 'an, Lan, Liu Shuling.