reaction piles arrangement (Figure 1) is used routinely in load testing. In order to minimize the effect of stresses transferred from the reaction piles to the soil near the test shaft, a minimum distance is required between the reaction piles and the test pile. It is generally accepted to allow for a minimum spacing of 3 reaction pile ...
Influence of reaction piles on test pile response in a ... - Springer
2013年3月13日 · This work presents a new analytical method to analyze the influence of reaction piles on the test pile response in a static load test. In our method, the interactive effect between soil and pile is simulated using independent springs and the shear displacement method is adopted to analyze the influence of reaction piles on test pile response.
Test Methods for Driven Piles - Pile Buck Magazine
2017年4月6日 · A trio of methods are commonly used when applying loads to test piles. Jacking against reaction piles is the most economical method, with the load in these piles limited to 25 to 50 percent of the test pile’s load. Reaction piles must be located a minimum of five feet from the tested pile, with provisions made to detect any upward movement.
This paper covers the general principles of pile load testing, including objectives of pile testing, importance of planning, various types and methods of testing, instrumentation, data to be obtained, and interpretation and use of the test results.
Chapter 8 – Static Pile Load Testing and Pile Dynamic Analysis
Static Load Tests measure the response of a pile under an applied load and are the most accurate method for determining pile capacities. They can determine the ultimate failure load of a foundation pile and determine its capacity to support the …
Apply the load to the pile by jacking against a reaction with one or more hydraulic jacks. The reaction is provided by one of the following methods: 1. Reaction Frame. Install two or more reaction piles, or anchors, for the reaction frame (Fig. 1) after the installation of the test pile.
是試樁設備中的反力樑 (reaction frame) 及其他施力設備在從壓力轉換為上拔張力 時，一般施工單位常需要一天時間來更換。 因此，工程師應可適時安排試樁進度以達到 設計規範所定之要求。 3. 若需使用同一測試樁作軸向抵抗 力及側向抵抗力時，應先安排軸向抵抗力
pile cap (if required) and the load testing equipment (reaction piles/kentledge/ hydraulic ram and pump/bi-directional load cell/rapid or dynamic test energy) can all be designed or chosen so as to apply the maximum test load safely. • When it is the intention to test a pile to geotechnical failure, due consideration must
Evaluation of Reaction Piles Effect on Test Piles in Static Load ...
2019年7月29日 · Subsequently, the influences of spacing, length, diameter of reaction piles, and type of reaction piles on the load-displacement behavior of test piles are assessed. This paper can provide insight to practicing civil engineers on how to …
Influence of reaction piles on the behaviour of a test pile in static ...
This paper employs a simplified analytical method to investigate the influence of reaction piles on the load–displacement behaviour of a test pile in static load testing. A parametric study is conducted to examine the effects of factors such as pile spacing ratio, pile slenderness ratio, and pile soil stiffness ratio.