Investigation And Study On Construction Scheme Optimization And Quality Control Of Deep Foundation Pit Support In Qingdao Coastal Area

Scale and quantity of substructure works have grown rapidly with the land rareness. Construction scheme and quality problems of deep foundation pit support are increasingly serious. Many engineering accidents and casualties have been caused. So, investigation and study on construction scheme optimization and quality control of deep foundation pit support have great scientific significance and practical value. Extensive investigation and study on deep foundation pit support in Qingdao coastal area have been carried out.Combining theories with engineering practice, systematical study on construction program optimization, deformation forecasting and quality control of anchor bar horizontal inclination has been carried out.First of all, Pareto Allocations have been applied to gain major and minor forms used for deep foundation pit support in Qingdao coastal area, according to statistics and investigation. Two major forms including anchor bars with concrete spray and anchor bars with piles have been found. Secondly, Analytical Hierarchy Process (AHP for short) has been selected to opt most suitable construction program according to economy, construction periods and project risks compared with other methods. It has been proved to be effective by engineering practices. Then, systematically study on deformation forecasting of deep foundation pit support has been...