The Field Monitoring And Design Method Research Of Flexible Eco-reinforced Retaining Wall In Highway

As shaoxing to zhuji highway cross the hill,slope protection engineering has huge amount of work and must pay attention to the ecological protection.So far,the combining form of supporting and retaining structure and ecological slope protection is single in common use at home.By comprehensive consideration,two type flexible eco-reinforced support structures-green reinforced gabion retaining wall, grille package ecological bag reinforced retaining wall, the study on the engineering geological characteristics of clay in local,the material properties of geosynthetics,the local stress and deformation of flexible eco-reinforced reinforced retaining wall, the design and construction technology of flexible eco-reinforced reinforced retaining wall, have important significance in study,design,construction and application of this flexible eco-reinforced reinforced retaining wall.Combining scientific research task supported by zhejiang provincial communications plan department-the application research project of flexible eco-reinforced reinforced retaining wall in highway, the demonstration project in shaoxing to zhuji highway in zhejiang province,a series of soil test,field tests and design and construction technology were carried out.And this article comprehensively and systematically analysed this new flexible eco-reinforced reinforced earth technology,providing basises and references for design and construction the same type earth retaining wall. The research content were as follows:1. Engineering background and material properties were introduced.The engineering characteristics of clay was concluded and summarized. By the ways of field sampling tests, the major physics and mechanics indexes of local clay were researched, the tensile test of gabion and geogrid, the physical and mechanical characteristics of gabion and geogrid, has been studied deeply.2. Components, technical features of green reinforced gabion retaining wall and grille package ecological bag reinforced retaining wall were presented. Based on the engineering geological conditions of the test section, systematic in-situ testing scheme was established.And the distribution and variation law of the lateral pressure on the facing, the vertical earth pressure with filling height and time, the tied-reinforcement and geotextile deformation, were studied through on-site monitoring three typical sections of shaoxing to zhuji highway in zhejiang province. The working mechanisms of two new supporting and retaining structures were studied.3. Design method of the flexible eco-reinforced support structures were analyzed and summarized. Combining with practical project, the limit equilibrium analysis methods and structure reliability theory in the stability analysis of the flexible eco-reinforced support structures were studied by means of relative program.4. Construction technology quality control standardand of the flexible eco-reinforced support structures were research and summarized. Construction quality control is not only the key but also the difficulty, the difficulty the dispersion and concealment, the key is the site monitoring.