Study On The Effect Of Horizontal Loads For Foundation Pile

The stress analysis and displacement calculation of foundation piles, especially under the inclines load, is one of the study hot spots attracting the general attention of engineering circle. At present, domestic existing standard of the analytical method has many insufficiencies, which uses separate calculation of vertical and horizontal loads, then carries on the iteration of the analysis to analyze the stress of the foundation pile under the inclined load. Therefore, unifying the foundation pile project characteristics under the inclined loads function, this paper integrated domestic and overseas hypotheses of the counterforce of soil (including vertical and horizontal), and applied mathematics methods and so on power series solution, zero dimension method of difference to lucubrate the stress analysis and the displacement calculation of the foundation pile under the inclined loads function.Firstly, this paper discussed the behavior and destruction properties of foundation pile under vertical load or horizontal load alone based on the review and comprehensive analysis of large amounts of relevant documents at home and abroad, and then studied the load effect and destruction mechanism of foundation piles under the inclined load.Secondly, according to the pile infinitesimal stress under inclined load function, this paper derived the line of deflection differential equation of the displacement of the foundation pile,and then gave a comparative analysis on each kind of the counterforce of soil supposition's suitable condition and the limitation. In view of the different soil texture (cohesive soil or light- textured-soil), considering the vertical and the horizontal counterforce of soil supposition will simultaneously have all possibilities to lead the line of deflection differential equation, using mathematics method to simplify the equation, this paper derived the internal force expression of the foundation pile based on the line of deflection differential equation of the displacement of the foundation pile.Finally, we applied the conclusion of this paper to a calculation example, compared the computed result using the finite element software Ansys with the appointed method by our country existing standard, and found that the result coincides with the mature algorithm and the computer simulation result, and it can also guarantee the reliability and rationality of computed result. It will have a considerable economic efficiency in instructing the engineering design or the construction.