scholarly journals Steel piles driving procedure and result analysis of extradosed Bridge Mainland - Pelješac

2021 ◽  
Author(s):  
Bicheng Tang ◽  
Dong Zhang ◽  
Xuefeng Wang ◽  
Jingli Xie
Keyword(s):  
Bearing Capacity ◽  
Pile Foundation ◽  
Large Scale ◽  
Pile Driving ◽  
Test Results ◽  
Driven Piles ◽  
Marine Environmental Protection ◽  
Result Analysis ◽  
Marine Environmental

In order to meet the high requirements of marine environmental protection and Eurocodes, based on the actual construction conditions of deep water on site in Croatia, the extra-long steel pile foundation was adopted to Pelješac Bridge. At the meantime the corresponding extra-large scale pile driving barge had to be used to carried out during the construction. The pile bearing capacity was analyzed and checked by the actual measured PDA (Pile Driving Analyzer) data. The test results showed that the toe bearing capacity of driven piles had linear relationship with blow counts, and the penetration (displacement/blow) before the stoppage was inversely proportional to toe bearing capacity. In addition, the traditional empirical formula of long-term pile bearing capacity of driven piles was only suitable for the piles, which were shorter than 100m. The stoppage criteria of extra-long pile should concentrate on penetration firstly, while the pile design elevation was subsidiary factor. Therefore, the analysis of pile driving procedure and results could be considered as significant actual engineering reference for the coming works.

scholarly journals KOMPARASI KINERJA ALAT PILE DRIVING ANALYZER DAN SOFTWARE CAPWAP DALAM MENGHASILKAN DAYA DUKUNG ULTIMIT PONDASI TIANG

2020 ◽  
Vol 28 (3) ◽  
pp. 378
Author(s):  
Rasdinanta Tarigan
Keyword(s):  
Bearing Capacity ◽  
Pile Foundation ◽  
Soft Soil ◽  
Performance Comparison ◽  
Ultimate Bearing Capacity ◽  
Pile Foundations ◽  
Pile Driving ◽  
Analysis Program ◽  
Wave Analysis ◽  
The Difference

Buildings that stand on soft soil usually use a pile foundation. Testing the ultimate bearing capacity of pile foundations in the field is a Pile Driving Analyzer (PDA) tool. Besides being inexpensive to test, the results can also be known quickly. This tool is supported by a software called CAPWAP (CAse Pile Wave Analysis Program).In this paper, a performance comparison of the Pile Driving Analyzer (PDA) and CAPWAP (CAse Pile Wave Analysis Program) software will be presented in producing the ultimate bearing capacity of pile foundations. The results of both will be analyzed in such a way that the causes of the differences in the performance of the Pile Driving Analyzer (PDA) and the CAPWAP software are known.The results obtained show that the performance of the Pile Driving Analyzer (PDA) tool will not be optimal if the energy transferred to the pile foundation is too small. The energy given by the hammer when struck must be in the range of 1% - 2%, if it is smaller then the performance of the tool in producing the ultimate bearing capacity will not be representative. The difference in the ultimate bearing capacity between the PDA device and the CAPWAP software for energy transferred to the pile foundation (EMX) under the specified energy standard is 10.71% - 33.23%. Meanwhile, energy that meets the specified standards has a value between 0.24% - 1.80%.

scholarly journals Analysis of Carrying Capacity of the Bored Pile Foundation in Cibubur Transpark Project

2020 ◽  
Vol 2 (3) ◽  
pp. 63-68
Author(s):  
Arif Sanjaya ◽  
Resi Aseanto
Keyword(s):  
Bearing Capacity ◽  
Carrying Capacity ◽  
Pile Foundation ◽  
Tall Buildings ◽  
Test Method ◽  
Test Results ◽  
Loading Test ◽  
Bored Pile ◽  
Ultimate Carrying Capacity ◽  
Spt Data

The foundation is a construction that continues the burden of the upper structure and passes it on to the soil below it. A bored pile foundation is now an option in working on structures in densely populated areas and tall buildings. The purpose of this study is to calculate and compare the carrying capacity of the bored pile foundation based on N-SPT data with the O 'Neil & Reese, and Reese & Wright methods, while the Loading test data with the interpretation of the Davisson method and the Mazurkiewicz method. The results of calculations based on N-SPT data, the average ultimate carrying capacity of the foundation with the O’neil & Reese method of 1211.61 tons, Reese & Wright of 1235.02 tons. While the Interpretation of Loading test method for Marzukiewicz is 1267.00 tons, Davisson is 850.40 tons, and the carrying capacity of PDA test results is 121.72 tons. From the calculation of the bearing capacity of the consecutive foundation of the smallest is the Davisson method, the O'neil & Reese method, the PDA test method, the Reese & Wright method, and finally the Mazurkiewicz method.

scholarly journals ANALISA PENURUNAN RAFT-PILED FOUNDATIONAREA BOGIE WAREHOUSE PROYEK JAKARTA LRT SECTION DEPOT

2019 ◽  
Vol 1 (2) ◽  
pp. 76
Author(s):  
Amelia Wijaya ◽  
Aksan Kawanda
Keyword(s):  
Bearing Capacity ◽  
Carrying Capacity ◽  
Pile Foundation ◽  
Test Results ◽  
Load Bearing ◽  
A Value ◽  
Group Efficiency ◽  
Ultimate Carrying Capacity

<span><em>The foundation of the raft post is the bottom structure of a building that channeled the load from the structure </em><span><em>over the soil under it. Carrying capacity of drill pile foundation is influenced by the capacity of the pole tip</em><br /><span><em>and bearing capacity of the pole blanket. The decline in this area can be an immediate decline and a </em><span><em>decrease in consolidation. This study aims to analyze the decrease of raft poles and the proportion of load </em><span><em>bearing in the bogie area of the Kelapa Gading LRT warehouse depot - Jakarta. From the analysis of the</em><br /><span><em>NSPT test results in the field, the ultimate carrying capacity and the decrease that occurred on the raft poles </em><span><em>were obtained. Based on the results of calculation of the ultimate carrying capacity of a single drill pole of </em><span><em>1.1 x 104 kN and the carrying capacity of the group is 1.1 x 108 kN. Calculation of group efficiency with the </em><span><em>Feld method is obtained at a value of 0.588. In the calculation of the immediate decline of the pole, a value of </em><span><em>5 cm is obtained and a decrease in consolidation of 7 cm. From the calculation of the proportion of raft pole</em><br /><span><em>load bearing the value of Pr = 6 x 10-6 is obtained, which means that load bearing can be said to be </em><span><em>dominated by rafts.</em></span></span></span></span></span></span></span></span></span></span></span><br /><br class="Apple-interchange-newline" /></span>

scholarly journals Model Test Ultimate Bearing Capacity of Bakau Piles Foundation on Soft Soil Deposit

2018 ◽  
Vol 1 (2) ◽  
pp. 94-99
Author(s):  
Muhammad O Yunus
Keyword(s):  
Bearing Capacity ◽  
Pile Foundation ◽  
Soft Soil ◽  
Ultimate Bearing Capacity ◽  
Small Scale ◽  
Test Results ◽  
Loading Test ◽  
Deep Foundation ◽  
Foundation Model ◽  
Ultimate Settlement

The pile foundation is one of the deep foundation types commonly used to support building loads when hard soil layers are deeply located. To determine the ultimate bearing capacity of a pile foundation of the load test results, there are several methods commonly used to interpretation test results such as Davisson method, Mazurkiewich method, Chin method, Buttler Hoy method and De Beer method. The aim of this study was to determine the characteristics of soft soil and bakau piles used in the study and to analyze the size of the bearing capacity ultimate of pile foundation that is modeled on a small scale in the laboratory. From the test results of material characteristics of the soil used is organic clay type with medium plasticity with specific gravity 2.75, liquid limit, LL = 50.36% and plasticity index, PI = 13.2%. While the results of testing the characteristics of bakau piles obtained average water content of 21.58%, tensile strength of 18.51 MPa, compressive strength of parallel fiber 23.75 MPa and perpendicular fiber 14.10 MPa, bending strength 106, 22 MPa, and strong split 29.91 MPa. From the result of loading test of the foundation model in the laboratory, it is found that the ultimate bearing capacity of the model without foundation is 41.00 kN with the ultimate settlement of 14.00 mm, the model of the 20 cm long bakau piles foundation is 52.00 kN with the ultimate settlement of 13.00 mm, the foundation model a 30 cm long bakau piles foundation of 54.00 kN with a 10.00 mm ultimate settlement, a 40 cm long bakau piles foundation model of 56.00 kN with an ultimate settlement of 8.50 mm.

Bearing capacity of piles in layered soils. Part 1. Clay overlying sand

1978 ◽  
Vol 15 (2) ◽  
pp. 171-182 ◽  
Author(s):  
G. G. Meyerhof ◽  
V. V. R. N. Sastry
Keyword(s):  
Bearing Capacity ◽  
Scale Effects ◽  
Cone Penetrometer ◽  
Test Results ◽  
Layered Soils ◽  
Driven Piles ◽  
Small Model ◽  
Sand Stratum ◽  
Pile Length ◽  
Shaft Friction

The paper summarizes investigations on jacked and driven piles in non-uniform soils consisting of clay and sand. Part 1 deals with the bearing capacity of piles penetrating through clay into sand whereas Part 2 discusses the case of piles in a sand stratum overlying clay. Preliminary tests on small model piles have been undertaken to study the effects on the point resistance of parameters such as the strength and thickness of a clay stratum, the strength ratio of soils in the two layers and the geometry of the layers. Based on these results, tests on a 76 mm diameter instrumented steel pile and a 36 mm diameter static cone penetrometer have been carried out for selected combinations of the variables involved.The test results are analysed to determine the influence of clay thickness and strength on the point resistance of piles in sand, expressed by a non-dimensional clay strength factor λ, and parameters influencing λ are discussed. The effect of layering on the shaft friction in sand and the radial stresses along the pile length are studied. The efficiency of small groups of model piles in layered soils is obtained. Field data are analysed, including scale effects, and simple design rules are suggested to estimate the bearing capacity of piles in layered soils.

scholarly journals Antifouling Technology Trends in Marine Environmental Protection

2021 ◽  
Vol 18 (2) ◽  
pp. 239-263
Author(s):  
Limei Tian ◽  
Yue Yin ◽  
Wei Bing ◽  
E. Jin
Keyword(s):  
Economic Benefits ◽  
Future Research ◽  
Research Directions ◽  
Antifouling Coatings ◽  
Marine Environmental Protection ◽  
Future Research Directions ◽  
Low Toxicity ◽  
Protein Resistant ◽  
Marine Environmental

AbstractMarine fouling is a worldwide problem, which is harmful to the global marine ecological environment and economic benefits. The traditional antifouling strategy usually uses toxic antifouling agents, which gradually exposes a serious environmental problem. Therefore, green, long-term, broad-spectrum and eco-friendly antifouling technologies have been the main target of engineers and researchers. In recent years, many eco-friendly antifouling technologies with broad application prospects have been developed based on the low toxicity and non-toxicity antifouling agents and materials. In this review, contemporary eco-friendly antifouling technologies and materials are summarized into bionic antifouling and non-bionic antifouling strategies (2000–2020). Non-bionic antifouling technologies mainly include protein resistant polymers, antifoulant releasing coatings, foul release coatings, conductive antifouling coatings and photodynamic antifouling technology. Bionic antifouling technologies mainly include the simulated shark skin, whale skin, dolphin skin, coral tentacles, lotus leaves and other biology structures. Brief future research directions and challenges are also discussed in the end, and we expect that this review would boost the development of marine antifouling technologies.

scholarly journals CAPACITY ANALYSIS OF SINGLE PILE BEARING CAPACITY BASED ON STATIC METHOD AND N-SPT TEST ON PILE DRIVING ANALYZER TEST (CASE STUDY OF PT. ASAHI FORGE INDONESIA PHASE II PROJECT)

Neutron ◽  
2019 ◽  
Vol 18 (2) ◽  
pp. 10-17
Author(s):  
Aseanto Resi
Keyword(s):  
Bearing Capacity ◽  
Carrying Capacity ◽  
Static Method ◽  
Capacity Analysis ◽  
Pile Driving ◽  
Army Corps ◽  
Single Pile ◽  
Test Results ◽  
Literature Study ◽  
Laboratory Test Results

Soil investigation has an important role before building a building. The carrying capacity of the soil obtained from the results of soil investigations is very influential on the shape and dimensions of the foundation itself. In the PT.Asahi Forge Indonesia Project, the SPT test data is out of sync with the actual piling results related to embedded pile penetration. The design plan for piles with a length of 7 m based on the N-SPT test turned out that in the field, the piles achieved a bearing capacity at a depth of 9 meters. The final project aims to analyze and compare the carrying capacity of a single pile based on static methods and N-SPT test on the Pile Driving Analyzer. The method used in this research is the study method of laboratory test results and N-SPT. Work steps include; preparation, literature study, data collection, carrying capacity analysis, and comparison of analysis results. The results of the analysis of the carrying capacity of the piles based on the static method by the  (Vijayvergiya & Focht, 1974)  method  amounted to 549,201 kN; The (McClelland, 1974) Method  of 426,292 kN; The U.S Army Corps Method is 459,545 kN and the Tomlinson (1977)  Method is 474,191 kN. While the results of N-SPT were bearing piles bearing capacity with the Mayerhof (1956) method of 738,645 kN and the Schmertmann (1967) Method of 451,327 kN.  Based on these results, the N-SPT test based on the Mayerhof  (1956) Method of 738,645 kN was the closest to the PDA test results of 755,116 kN. The comparison of the results of the analysis between the static test, N-SPT and PDA test is 19: 24: 30. This means that the carrying capacity of the static pile and PDA test has a difference of 37% while between the N-SPT and PDA test has a difference of 20%.

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