Research On Construction Technology And On-site Monito-ring Of Suspension Anchor Retaining Wall Of Subgrade

In recent years, retaining walls has played an irreplaceable role in complex terrain areahighway embankment reinforcement bracing along with high-grade highway extend from theplains to the mountains, from the eastern to the western region continue. Through theintroduction and analysis of common retaining wall, suspension anchor retaining wall ofroadbed was proposed based on the anchor plate and cantilever retaining wall. Thisdissertation focuses on the onsite testing of internal stress and strain and constructionorganization of suspension anchor retaining wall relies on construction of Wu Zhi expressway(Wu qi to Zhi dan).Firstly, composition and mechanical characteristics of the suspension anchor retainingwall was analyzied. The field test conditions were determined according to mechanicalcharacteristics of suspension anchor retaining wall, combined with actual situation of researchprojects.Then the working conditions composition are discussed in detail.Secondly, combined with on-site construction situation, the suspension anchor retainingtesting technology has been systematically studied. A variety of stress and strain measurementinstruments were selected. Through the field embedded of detection equipment, the locationand laying method of sensors were determined and sensing instrument laying processconsiderations were summarized.Thirdly，through the measured data collation and analysis of various conditions, thesuspension anchor retaining wall stress patterns and stress distribution were researched. Theresesrched shown that compressive stress of suspension anchor retaining wall soil, tensilestress and rod anchor plate uplift stress are increased with the filling height graduallyincreases. Outside wall stress gradually increases with height becomes large, and the innerstress of wall increasing gradually with the wall height decreases.Meanwhile, the combinationof pilot projects for construction and testing results, the suspension anchor retaining wall afterconstruction monitoring accuracy, frequency and methods were recommended combined withconstruction and testing results of pilot projects.Finally, suspension anchor retaining wall construction procerss of pilot projects was summarized and construction organization was deeply researched. Then construction program,construction technology, construction considerations and inspection and assessment standardsof suspension anchor retaining wall was proposed.