Research On The Lateral Bearing Properties Of Great Water Fluctuation All-vertical-piled Frame Wharf

In this paper, the study on failure test of CHONGQING CUNTAN HARBOR' structure model is made as well as three-dimensional numerical analysis. The further study on the structural failure mode, the horizontal impact force's partition coefficient and structural horizontal bearing capacity. The following are the main research work:①The progress of study is introduced on the reinforced concrete frame structure damage , as well as related analysis and calculation theory.②Three-dimensional nonlinear static analysis is made for structure with Pushover analysis. The most unfavorable load case is obtained, then in this case the structure model 'failure test is made.③By comparing test results with numerical results, it is considered that the coincidence degree is good. Then the structure's cracking load and ultimate load are obtained, a clear pattern of structural damage, as well as the structure's weak links are confirmed. Namely the order of the yield structural elements expand upwards from the bottom of the horizontal beam, then after some horizontal beams are yielded, vertical linkages beam started to yield, and finally the frame columns yield, while the structure is the weak link in the bottom two layers of horizontal linkages beam.④A numerical analysis to the structure under horizontal impact force is made against All-vertical-piled wharf ' two traits with great height of water that is multi-layered moors and the presence of lateral and lengthways braces.and it is validated by model test results. Horizontal impact force's partition coefficient in each frame bent is obtained and reasons for the difference with the code. The change rules of partition coefficient are summed up,when structure is in many horizontal impact force cases,with different mooring-layers,different space between two bents or different numbers of bents.⑤An analysis is made against influencing factors of All-vertical-piled wharf 's horizontal bearing capacity and ductility with great height of water. By calculating horizontal bearing capacity under different elastic modulus of concrete, different beam height and different diameter of piles, an analysis on its change rules and influence to structure's ductility is made .And by regression Analysis, separately relation formulas are attained between bearing capacity and these fatctors. Finally, by refering to seismic design in high-rise building and applying to theory of "controlling the plastic hinge",design measures on ductile and framed wharf are put forward.