Self-balanced Load Test Pile Method In Practical Engineering Application

With the rapid development of China’s construction projects, large diameter,large-tonnage, long pile applications, more and more, although the pile foundation designtheory and construction methods have been greatly improved, but the physical andmechanical properties of the foundation soil is complicated and changeablesite constructionlimitations, and how to determine pile capacity, reduce the design values of the actualcarrying capacity of piles and pile of difference, to reduce the pile to a variety of defects in theconstruction process is the engineering sector of concern. Therefore, the use of the detectionmethod, accurately and effectively test the bearing capacity of pile foundation works and pilequality and how the actual working conditions of the entire pile foundation works truthfullyshown, is an important guarantee for construction safety. Self-balance method is a kind andreliable and economical, and simple testing methods, the main contents are as follows:1.Introduces several pile foundation detection methods, and comparative analysis.2.Summarizes the test principle of self-balancing test pile, load the box to determine thelocation and the laying position.3.Analysis of the vertical bearing capacity factors and analysis of the difference betweenself-balance test method test pile and pile mechanism to explore the transformation of theself-balance test pile ultimate bearing capacity.4.Harbin Matsuura Bridge Project, the Yangming Beach Bridge ease the engineeringfoundation piles from the balance of the testing process relying on self-balance principle, theultimate bearing capacity and load carrying characteristics of grouting effectiveness analysis,soil friction resistance limits, pile bearing capacity and pile construction process to conduct acomprehensive analysis, by obtaining the test data of the above test, the pile foundationdesign of the project to provide a scientific basis and reliability verification, but also in HarbinSonghua River Sections of the case for the future selection of large diameter, high BearingCapacity of Pile design and construction to provide first-hand information.