Research On Foundation Settlement And Dam Stress Of Unity Of Bridge And Dam Structure Of The Moon Lake Landscape Bridge In The Core Area Of Hunan University Of Science And Technology

The moon lake landscape bridge in the core area of Hunan University of Science andTechnology adopted a unity of arch bridge and dam structure. Dam and bridge is builttogether, which not only can make a beautiful landscape and save the cost of the dam, butalso can provide a strong tie bar for the arch bridge to lower the demand offoundation.However this kind of structure form will make the stress of structure’sfoundation and dam become more complicated. Although the abutment and dam built as awhole, the basis of the abutment and dam are laying on the two different foundationbearing stratum. And more, the weight and load of abutment and dam are quite different.Therefore their stress of foundation bearing stratum will be different. The the subsidencedeformation of foundation may be inconsistent. So it may be difficult to make out the stressand settlement of foundation by the traditional calculation method. The dam as a hydraulicstructure to provide water retaining and water storage function.The dam of this structure isconcrete gravity dam. In order to achieve a predetermined function the dam trength shouldmeet the requirements.This paper carried out the following work for the above problem:(1) All the load of the superstructure of the bridge is transmitted to the foundationthrough the abutment, abutment design related to the safety of the entire bridge.In thispaper,designing the abutment according to the foundation bearing capacity and throughcalculating the abutment foundation abutment stress to check the design. The resultsshowed that the abutment design reasonable.(2) In this paper, through establishing FLAC3d simulation model to simulate thecalculation of foundation settlement and analysis of ground stress distribution. Resultsshow that the overall structure of foundation settlement is large, but uneven settlement offoundation is small, the foundation stress does not exceed the allowable bearing capacity.(3) Structure foundation is pread foundation,because the foundation settlement,foundation stress becomes complex,whether the bottom of structure foundation will betensile failure during the construction and operation process is related to the safety of thewhole structure In this paper,by establishing the model to calculate and analyze the tensile stress at the bottom of structure’s foundation. The calculation results show that structurefoundation is safe.(4) Space model is established by using FLAC software to analyze the stressdistribution of dam body during the normal operation and construc-tion process in order tojudge whether the dam strength meet the requirements and provide the basisfor dam reinforcement.