The static loading test for three group of testing piles of jiading power plant secend stage project are analyzed and studied in this thesis , and the practical applying of high - accurate data collector , technique of waterproof insulation and testing technique of burying in the body of pile are introduced also . the vertical and horizontal loading features of three group of piles of different kind and constructing technique in different earth layer at the pile point are analyzed and compared and summed up with basic integro - differential equation calculating the pile earth system load transmit , transforming principle of stress - deforming and pile body rating of burying electric measuring element . changing law of stress , and changing law of pile body shifting and bending for different testing piles under vertical and horizontal load are showed so that the loading features of soil layer and pile at testing spot , reliable design data for pile type and base for scientific construction technique are provided 本文仅就嘉定电厂二期工程中的三根试验桩的静载试验进行了分析和研究，利用桩土体系荷载传递分析计算的基本微分方程及应力-应变转换原理，结合预埋电测元件的桩身率定，对三组不同种类、不同施工工艺、不同持力层中的桩的竖直、水平承载特性进行了分析、比较和归纳，通过大量、全面的实测数据，经过整理、转换和推演，揭示了不同试验桩在竖直、水平荷载作用下的应力变化规律和桩身变位、挠曲变化规律，最终提供试验场地土层和桩的承载特性，为该工程合理设计桩型提供了可靠的设计参数，为确定科学的施工工艺提供了有力的依据。
Abstract : the results of hi - lo strain - gauge test on 9 dead - load testing piles are analyzed . the bearing strength of single piles is evaluated preliminarily by using high strain and low strain process and conditions for correlating dynamic and dead loads and technical factors affecting the test accuracy are discussed 文摘:通过对一组静载试验桩高低应变动测结果的分析，对高应变法、低应变法检测单桩承载力的可靠性作出了初步评价，并对动静对比成立的条件及影响其测试准确性的一些技术因素进行了探讨。
