Seismic And Design Of Batter Pile Joint That Fabricated By Cast-in-place And Assembling On High-Pile Wharf Structures

Port city has become an important link and vector between china and the world. The harbor severance can create the huge economic loss and the society affects. Under the massive earthquake, the pile wharf is very easy to destroy, especially the joint. In order to improve the seismic performance of structure of pile-wharf structures, this paper presents a batter pile joint that fabricated by cast-in-place and assembling.It is to explore seismic performance failure mechanism of the batter pile joint through theoretical analysis, finds ways to improve the seismic performance of high-pile piers of the pile-wharf, at the same time provides a reference for the experiment study.In order to research mechanical properties of this joint, this paper used ansys for finite element analysis and syudies performance and destruction mechanism of the joint through monotonous-load and low-load.The main work of this paper is as follow:1. According to construction features of caps and steel pile, designing a batter steel pile joint, introducing the construction process of this joint;2. Using annoys in this paper for finite element analysis of this joint, analyzing the impact of core-reinforced C reinforced of caps to mechanical properties of the joint through monotonous-load and low-load.The main conclusions of this paper is as follow:1. Under monotonous-load, the central of pile cap cracks first.As the core-reinforced C reinforced increas,caps cracks reduce.Pile-reinforced stress decreases as pile- reinforced increases.There is little impact on reinforced stress as c reinforced changes.2.Under the low-load, the cumulative energy of joint increases as core-reinforced increases,but it dose not increase while the rate of core-reinforced reaches 4.5%.There is little improvements on the cumulative energy of joint, while the rate of c reinforced reaches 1.8%,it reduces as c reinforced reaches.3. Under monotonous-load and low-load, core-reinforced stress is large but c reinforced stress is small.It proposes.There is little improvements on cumulative energy of joint as c reinforced changes.It recommendates that reinforced on caps should be reduced or by structural reinforcement in the design of this joint.