scholarly journals LARGE DIAMETER PILE LOAD TEST WITH A CASE STUDY USING OSTERBERG - CELL

2018 ◽  
Vol 30 (1) ◽  
Author(s):  
S. K. Bagui ◽  
B. C. Dinesh ◽  
Khan Md. Kamal ◽  
Ahsan Ahmad Sharif Shajib ◽  
Inthaqab Wahid Ruso
Keyword(s):  
Large Diameter ◽  
Load Test ◽  
Silty Sand ◽  
Load Testing ◽  
Downward Movement ◽  
Loading Test ◽  
Static Loading Test ◽  
Reverse Circulation ◽  
Pile Load Test

Static loading test using single level bidirectional –Cell was tested in March 2017 atPaira bridge in Bangladesh for initial load testing. Soil consists of soft silt with traced clay from0.0 m to 10.5 m underlain by various layer with very dense silty sand at the toe level and below.Pile was constructed reverse circulation method. Drilling slurry was composed of bentonite sluryfor 2.5 m diameter pile. The load cells were attached to a reinforcing cage at 18 m above toe.Static load test was 28days of casting the pile and tested. Testing was carried as per ASTM 1143with load increment 7.5 % estimated ultimate load. It was observed that downward movement ofreaching 220 mm and locked downward movement and O-Cell was given force for upwardmovement to find out skin fraction. Detailed analysis was carried out and it was found thatultimate load consisted of 49 MN skin frication and 30 MN end bearing sand safe design loadwas calculated as 33 MN.

scholarly journals Full-Scale Well Instrumented Large Diameter Bored Pile Load Test in Multi Layered Soil: A Case Study of Damietta Port New Grain Silos Project

2018 ◽  
Vol 8 (01) ◽  
Author(s):  
M. Eid ◽  
A. Hefny ◽  
T. Sorour ◽  
Y. Zagh
Keyword(s):  
Load Distribution ◽  
Large Diameter ◽  
Soil Layer ◽  
Full Scale ◽  
Layered Soil ◽  
Load Test ◽  
Test Field ◽  
Loading Test ◽  
Bored Pile ◽  
Pile Load Test

A Large diameter bored pile with diameter of 1.00 m and length of 34.00 m has been implemented in multi layered soil. The pile was tested under three axially loading and unloading cycles, in order to determine the load settlement curve and assess the ultimate pile capacity. Extensive investigation was carried out to obtain reliable soil properties at the examined pile location, through in situ and laboratory soil tests. Twelve strain gauges were fixed on pile steel reinforcement bars at top of each soil layer level. Moreover, four dial gauges were set up at pile head. Also, three telltales were extended to three different levels inside the pile. The pile load test field measurements are presented in the form of load settlement and load distribution curves for different loading steps. In addition, the pile ultimate capacity is calculated using different codes criterions and compared with the loading test results. Large diameter bored pile, Settlement, Pile load distribution, Pile installation, Instrumentation, Full scale pile load test, Pile behavior.

Research of Static Load Testing Program of Reinforced Concrete Truss Scheme

2013 ◽  
Vol 443 ◽  
pp. 110-113
Author(s):  
Ying Xia
Keyword(s):  
Static Load ◽  
Test Site ◽  
Load Test ◽  
Load Testing ◽  
Static Load Test ◽  
Test Program ◽  
Loading Test ◽  
Static Loading Test ◽  
Testing Work ◽  
Static Load Testing

In order to ensure the safety of the truss, truss structure should be carried out prior to use static loading test for assessing the actual working conditions as well as the truss trusses meet the design. The static load test site carries out the testing work. In this paper loaded static load test program was designed to include load cases and measuring points on the truss static load test a theoretical analysis.

Large-diameter bored and grouted piles in marine sediments of the Red Sea

1988 ◽  
Vol 25 (4) ◽  
pp. 826-831 ◽  
Author(s):  
Fouad M. Ghazali ◽  
Elias Sotiropoulos ◽  
Osama A. Mansour
Keyword(s):  
Red Sea ◽  
Marine Sediments ◽  
Large Diameter ◽  
Load Test ◽  
Carbonate Sediments ◽  
Load Testing ◽  
Test Results ◽  
Concrete Piles ◽  
Pile Load Test ◽  
Concrete Casting

This work presents the construction procedures and pile load test results of large-diameter bored and grouted cast-in-place concrete piles in coral formations and carbonate sediments in the Red Sea. Construction details and difficulties involved in the process of site preparation, borings, reinforcement, concrete casting, and grouting are described and discussed. Geotechnical engineering considerations that led to the selection of this type of foundation and the conditions of the site are included. Key words: pile foundations, bored and grouted, marine sediments, construction methodology, load testing.

scholarly journals THE EXPERIENCE DIFFERENT OF PILING TESTING ON PROBLEMATICAL SOIL GROUND OF ASTANA, KAZAKHSTAN

2018 ◽  
Vol 14 (4) ◽  
pp. 158-171 ◽  
Author(s):  
Askar Zh. Zhussupbekov ◽  
Yoshinori Iwasaki ◽  
Abdulla R. Omarov
Keyword(s):  
Static Loading ◽  
Large Diameter ◽  
Capital City ◽  
Loading Test ◽  
Static Compression ◽  
Static Tests ◽  
Advantages And Disadvantages ◽  
Concrete Body ◽  
Static Loading Test ◽  
Bored Piles

At the present time, in Astana city is going on works by construction public transport system LRT (Light Railway Transport). LRT is an overhead road with two railway lines. The first stage of construction is including construction of overhead road (bridge) with 22,4 km length and 18 stations. The foundation of bridge is the bored piles with cross-section 1.0HL5 m and length 8-КЗ 5 m. In these conditions, very important to control integrity of concrete body of each bored piles. For checking integrity- applying two methods - Low Strain Method and Cross-Hole Sonic Logging. The aim of this paper is to discuss the advantages and disadvantages of each method using the examples of a real application. The article presents loading tests of large diameter and deep boring piles on the construction site in new capital city of the Republic of Kazakhstan. Finally, some recommendations for testmg methods suitable for problematical ground conditions of Kazakhstan are introduced. Traditionally, pile load tests in Kazakhstan are carried out using static loading test methods. Static pile loading test is the most reliable method to obtain the load-settlement relation of piles. Results of static pile tests using the static compression loading test (by ASTM). static loading test (by GOST) and bi-direction static loading test (by ASTM) methods are presented in this paper. Experienced bored piles with length of 31.5 m. diameter 1000 mm. Hereafter the results of underground testmg by the piles with the methods of vertical static tests of SLT. BDSLT and SCLT are presented, which had been made on Expo 2017 projects, buildings of Pavilion m Astana. Kazakhstan.

Predicting the Ultimate Bearing Capacity of Single Piles Based on CPTU

2011 ◽  
Vol 243-249 ◽  
pp. 4402-4407
Author(s):  
Yong Hong Miao ◽  
Guo Jun Cai ◽  
Song Yu Liu
Keyword(s):  
Load Test ◽  
Load Testing ◽  
Pile Capacity ◽  
Piezocone Penetration Test ◽  
Load Carrying ◽  
Load Tests ◽  
Pile Load Test ◽  
Single Piles ◽  
Pile Load Tests ◽  
Best Fit

Six methods to determine axial pile capacity directly based on piezocone penetration test (CPTU) data are presented and evaluated. Analyses and evaluation were conducted on three types piles that were failed during pile load testing. The CPT methods, as well as the CPTU methods, were used to estimate the load carrying capacities of the investigated piles (Qp ). Pile load test were used to determine the measured load carrying capacities (Qm). The pile capacities determined using the different methods were compared with the measured pile capacities obtained from the pile load tests. Two criteria were selected as bases of evaluation: the best fit line for Qp versus Qm and the arithmetic mean and standard deviation for the ratio Qp /Qm. Results of the analyses showed that the best methods for determining pile capacity are the CPTU methods.

Numerical Analysis and Static Loading Test of Equipment Fixed on the Light-Weight Partition Wall

2015 ◽  
Vol 752-753 ◽  
pp. 773-777
Author(s):  
Meng Chieh Lee ◽  
Ren Zuo Wang ◽  
Bing Chang Lin ◽  
Chao Hsum Huang
Keyword(s):  
Static Loading ◽  
Element Model ◽  
Load Test ◽  
Light Weight ◽  
Static Load Test ◽  
Loading Test ◽  
Partition Wall ◽  
Nonlinear Responses ◽  
Static Loading Test ◽  
External Forces

The purpose of this paper is to study the nonlinear responses of equipment fixed on the light-weight partition wall (LWPW). The center-point flexure test (CPFT) and static load test of the light-weight partition wall (LWPW) are developed. The elastic modulus and support loading of three boards can be obtained from FPFT and static loading test. The LWPW finite element model using ANSYS is used to simulate the deformations of the board subjected to external forces. Numerical simulation results are very close to the experiment results. It demonstrates the accuracy of the ANSYS model.

Field pile load tests in saline permafrost. I. Test procedures and results

1993 ◽  
Vol 30 (1) ◽  
pp. 34-45 ◽  
Author(s):  
K. W. Biggar ◽  
D. C. Sego
Keyword(s):  
Companion Paper ◽  
Load Test ◽  
Load Testing ◽  
Test Procedures ◽  
Testing Procedures ◽  
Uplift Load ◽  
Load Tests ◽  
Pile Load Test ◽  
Pile Load Tests

A pile load test program carried out in Iqaluit, Northwest Territories, to provide design information for the Short Range Radar sites is described. The program consisted of testing 10 steel pipe piles with various surface modifications backfilled with clean sand and 4 Dywidag bars backfilled with Ciment Fondu™ grout. All tests were performed in saline permafrost. This paper describes the site conditions, installation procedures and pile uplift load testing procedures, and results of the pile load tests. The beneficial effect of modifications to the pile surface and backfill material is identified. The analysis and discussions of the results are presented in a companion paper. Key words : permafrost, saline, piles, load tests, field, in situ, capacity.

scholarly journals Finite Element Modelling of Prestressed Concrete Piles in Soft Soils, Case Study: Northern Jakarta, Indonesia

2021 ◽  
pp. 21-30
Author(s):  
Aswin Lim ◽  
Varian Harwin Batistuta ◽  
Yiska Vivian Chritiansen Wijaya
Keyword(s):  
Finite Element ◽  
Prestressed Concrete ◽  
Coastal Area ◽  
Interface Strength ◽  
Load Test ◽  
Loading Test ◽  
Soft Soils ◽  
Concrete Piles ◽  
High Rise

Jakarta is faced with limited land resources due to its position as the capital city of Indonesia. Therefore, numerous high-rise buildings are being constructed to solve this problem and provide accommodations for a large number of Jakarta residents. Studies have shown that prestressed concrete piles (spun piles) are commonly used as the foundations of high-rise buildings in metropolitan cities across Indonesia, especially in the Northern Jakarta Coastal area, which is predominant with deep soft soils deposit. To further assess and verify the ultimate capacity of the pile, a static loading test was conducted. However, not all results from the field test produced ideal, accurate, precise, and reliable load-settlement curve (until failure) results. Therefore, this study aims to determine the soil properties for the analysis of prestressed concrete spun piles with a diameter of 600 mm in the Northern Jakarta coastal area based on the standard penetration test values (SPT-N). It is a case study of a well-documented static pile load test using the kentledge system. Back analyses were performed by the finite element method to obtain the extrapolated load-settlement curve. Furthermore, the effect of interface strength between pile and soil on the load-settlement curve was also investigated. The results showed that a reduction of interface strength leads to a smaller load–settlement curve. In addition, several geotechnical engineering parameters of soil, such as the undrained shear strength and effective young's modulus, were established using data from an in-situ soil site investigation and empirical correlations with SPT-N.

scholarly journals Behavior of a Large Diameter Bored Pile in Drained and Undrained Conditions: Comparative Analysis

Geosciences ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 261
Author(s):  
Mohamed Ezzat Al-Atroush ◽  
Ashraf Hefny ◽  
Yasser Zaghloul ◽  
Tamer Sorour
Keyword(s):  
Numerical Models ◽  
Large Diameter ◽  
Field Measurements ◽  
Load Test ◽  
Design Parameters ◽  
Test Problems ◽  
Loading Test ◽  
Stiff Clay ◽  
Undrained Conditions ◽  
Drained And Undrained Conditions

Despite the difficulties in obtaining the ultimate capacity of the large diameter bored piles (LDBP) using the in situ loading test, this method is the most recommended by several codes and design standards. However, several settlement-based approaches, alongside the conventional capacity-based design approach for LDBP, are proposed in the event of the impossibility of performing a pile-loading test during the design phase. With that in mind, natural clays usually involve some degree of over consolidation; there is considerable debate among the various approaches on how to represent the behavior of the overconsolidated (OC)stiff clay and its design parameters, whether drained or undrained, in the pile-load test problems. In this paper, field measurements of axial loaded to failure LDBP load test installed in OC stiff clay (Alzey Bridge Case Study, Germany) have been used to assess the quality of two numerical models established to simulate the pile behavior in both drained and undrained conditions. After calibration, the load transfer mechanism of the LDBP in both drained and undrained conditions has been explored. Results of the numerical analyses showed the main differences between the soil pile interaction in both drained and undrained conditions. Also, field measurements have been used to assess the ultimate pile capacity estimated using different methods.

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