Laboratory Model Test Research On Foundation Reinforcement Of Existing Rural Building With Wheat-Lime Pile

At present, rural buildings are wide distribution and numerous in our country.The foundation diseases of existing rural buildings are common occurance due to various reasons, and the foundation diseases may cause the quality problem of the upper structure, influence the normal use of buildings, endanger the safety of the structure. Therefore, the research on foundation reinforcement of existing rural building is of far reaching importance.Firstly, the paper takes a research on the foundation of existing rural building in China, and proposes reinforce methods about wheat straw-lime pile reinforce foundation by locating both sides of strip footing according to the actual situation of the rural survey in country, designs the laboratory model test on foundation reinforcement by locating wheat straw-lime pile at both side of strip footing, researches foundation bearing capacity, deformation and failure mode, p-s curve, the magnitude and distribution discipline of the foundation stress before and after reinforcement, analyzes the load-bearing mechanism, strengthening mechanism and reinforcement effect of the strengthening technology. The test results indicate that this type of reinforcement can effectively improve the foundation bearing capacity, and compared with the former reinforcement deformation and failure mode, the magnitude and distribution discipline of the foundation stress all have changed.The main reinforcing mechanism is restriction effect and barrier action.Wheat straw is the method's main reforcement factor .The results of this study provide the technical basis for the design and construction of foundation reinforcement of existing rural building by wheat straw-lime pile and promote the popularization and application of the reinforcement technique in rural area.