scholarly journals Analytical Research of Integrity Testing on Bore Pile

2021 ◽  
Vol 9 (11) ◽  
pp. 813-815
Author(s):  
Shubham D. Shingade
Keyword(s):  
Experimental Study ◽  
Cross Section ◽  
Pile Foundation ◽  
Potential Problem ◽  
Integrity Test ◽  
Integrity Testing ◽  
Concrete Quality ◽  
Bore Pile ◽  
Analytical Research ◽  
Pile Integrity

Abstract: The integrity test is conducted on RCC bore pile this test is conducted as per the guidelines of ASTM D5882 respectively. This test is conducted on “Perstorp site which is located in dis -Bharuch Gujrat. In this region the Strata of soil is soft aquifer hence to carry heavy structural load, pile foundation is best solution. The experimental study is carries out on 20 meter length of Bore pile of 600mm in diameter. This paper is based on experimental study on bore pile due to assess the pile integrity for potential problem like cross section change, honeycombing, concrete quality, continuity etc.

scholarly journals Analytical Research of Vertical Load Test on Bore Pile

2021 ◽  
Vol 9 (10) ◽  
pp. 1109-1111
Author(s):  
Shubham D. Shingade
Keyword(s):  
Experimental Study ◽  
Pile Foundation ◽  
Loading Condition ◽  
Load Test ◽  
Vertical Load ◽  
Vertical Loading ◽  
Bore Pile ◽  
Analytical Research ◽  
Incremental Loading

Abstract: The vertical lode test is conducted on RCC bore pile this test is conducted as per the guidelines of IS 2911 part 4 respectively. This test is conducted on “Perstorp site which is located in dist. -Bharuch Gujrat. In this region the Strata of soil is soft aquifer hence to carry heavy structural load, pile foundation is best solution. The experimental study is carries out on 10 meter length of Bore pile of 500mm in diameter of loading area of 283.5 sq.cm. This paper is based on experimental study on bore pile due to vertical loading condition and expressing the behaviour of pile under the vertical incremental loading condition. And in this paper we follow the approach of analytical and experimental.

scholarly journals ANALISIS MOMEN NOMINAL ULTIMIT TIANG BOR UNTUK DIGUNAKAN PADA PERHITUNGAN METODE BROMS

2020 ◽  
Vol 3 (2) ◽  
pp. 455
Author(s):  
Reynard Julio Widjaja ◽  
Gregorius Sandjaja Sentosa
Keyword(s):  
Cross Section ◽  
Pile Foundation ◽  
Reduction Factor ◽  
Bored Pile ◽  
Concrete Quality ◽  
Ultimate Moment ◽  
Section Analysis

Foundation is the lowest part of construction that is important to bear the burden of the building above it. In this analysis, used the calculation of circle cross section analysis to get the nominal moment that can be hold to bore piled that have a diameter 30 cm to 100 cm, other than that used the different of concrete quality, concrete quality that used in this analysis is 22.5 MPa, 25 MPa, and 30 MPa. The amount of reinforcement used is also different, such as 4 reinforcement, 6 reinforcement and 8 reinforcement. The reduction factor that used is the conservative number which is 0.65. After obtained the value of ultimate moment, used the Broms chart to get the value of Hu and H. From the calculation, the result between 50 kNm to 2244 kNm. Based on the comparison with Pile Foundation from brochure, ultimate moment of the Pile Foundation is stronger than the ultimate moment of the bored pile eith 340 kNm for pile foundation dan 206 kNm for bored pile.AbstrakFondasi merupakan bagian paling bawah dari suatu konstruksi yang penting untuk memikul beban bangunan di atasnya. Dalam analisis ini digunakan perhitungan analisis penampang lingkaran yang berguna untuk mencari momen nominal yang dapat ditahan oleh tiang bor yang memiliki diameter 30 cm sampai 100 cm, selain itu digunakan juga mutu beton yang berbeda, mutu beton yang dipakai dalam analisis ini adalah mutu beton fc’ 22.5 MPa, fc’ 25 MPa, dan fc’ 30 MPa. Jumlah tulangan yang dipakai pun juga berbeda yaitu 4 tulangan, 6 tulangan dan 8 tulangan. Untuk faktor reduksi kekuatan sendiri angka yang diambil adalah angka yang konservatif yaitu 0.65 agar lebih aman. Dari hasil perhitungan, momen ultimit diperoleh antara 50 kNm sampai 2244 kNm. Setelah didapat nilai momen ultimit, momen dimasukkan ke dalam grafik Broms agar mendapatkan nilai Hu dan Hijin. Berdasarkan hasil perbandingan dengan tiang pancang yang didapat dari brosur, momen ultimit tiang pancang lebih kuat daripada momen ultimit dari tiang bor dengan momen 340 kNm untuk tiang pancang dan 206 kNm untuk tiang bor.

Experimental study of breaking wave loads on elevated pile cap with rectangular cross-section

2021 ◽  
Vol 227 ◽  
pp. 108878
Author(s):  
Jie Hong ◽  
Kai Wei ◽  
Zhonghui Shen ◽  
Bo Xu ◽  
Shunquan Qin
Keyword(s):  
Experimental Study ◽  
Cross Section ◽  
Rectangular Cross Section ◽  
Breaking Wave ◽  
Wave Loads ◽  
Pile Cap

scholarly journals Sonic Logging Vs PIT untuk Mendeteksi Integritas Pondasi Tiang

2011 ◽  
Vol 2 (2) ◽  
pp. 1031
Author(s):  
Gouw Tjie Liong
Keyword(s):  
Basic Theory ◽  
Load Testing ◽  
Destructive Testing ◽  
Pile Capacity ◽  
Advantages And Disadvantages ◽  
Integrity Testing ◽  
First Category ◽  
Sonic Logging ◽  
Second Category ◽  
Pile Integrity

Non destructive testing on piles can be divided into two main categories. The first category is to find out the integrity of the piles, such as pile integrity testing (PIT) and sonic logging. The second category is to find out the pile capacity, such as dynamic load testing/pile driving analysis. Since the early 1990s, the application of the tests was brought into practice and gained its popularity in Indonesia. However, the basic theory behind the testing has not been widely disseminated. This study tries to elaborate the first category of the testing, i.e. the pile integrity testing and sonic logging. The basic theory, the advantages and disadvantages, the application, the limitation and the interpretation of those techniques shall be discussed. Comparison on case studies of those testing methods also shall be given. 

scholarly journals EXPERIMENTAL STUDY ON RC BEAM SPECIMENS WITH CFRP ROD/MESH EMBEDDED AND INCREASING THICKNESS OF THE CROSS SECTION

2020 ◽  
Vol 73 (1) ◽  
pp. 348-354
Author(s):  
Shohei UEMURA ◽  
Kiyoshi MURAKAMI ◽  
Ayumi SATOH ◽  
Seiichiro YAMAUCHI
Keyword(s):  
Experimental Study ◽  
Cross Section ◽  
Rc Beam ◽  
The Cross

scholarly journals Формирование и деформация капель жидкости в микроканалах

2020 ◽  
Vol 46 (15) ◽  
pp. 18
Author(s):  
Ф.В. Роньшин ◽  
Ю.А. Дементьев ◽  
Е.А. Чиннов
Keyword(s):  
Experimental Study ◽  
Flow Regime ◽  
Cross Section ◽  
Weber Number ◽  
Rectangular Cross Section ◽  
Critical Value ◽  
Drop Formation ◽  
Liquid Bridges ◽  
Liquid Moving ◽  
Side Walls

An experimental study of drop formation in narrow horizontal microchannels with rectangular cross section and a height from 50 to 150 micrometers was performed. It is shown that in these channels there is a new flow regime when drops moving along the microchannel, which are vertical liquid bridges. Three mechanisms of the formation of such drops are distinguished: the formation directly near the liquid nozzle, the separation of droplets from the liquid moving along the side walls of the channel, and due to the destruction of strongly deformed drops and horizontal liquid bridges. It was found that the deformation of drops increases with an increase in the Weber number. It is shown that when the first critical value of the Weber number is reached, the drops begin to deform, and when the second Weber number is reached, they break.

scholarly journals You Can’t See What You Can’t See: Experimental Evidence for How Much Relevant Information May Be Missed Due to Google’s Web Search Personalisation

2020 ◽  
Author(s):  
C Lai ◽  
Markus Luczak-Roesch
Keyword(s):  
Experimental Study ◽  
Public Sector ◽  
Web Search ◽  
Potential Problem ◽  
Knowledge Work ◽  
Relevant Information ◽  
Web Search Engine ◽  
Online Searches ◽  
Potential Impact ◽  
Web Research

© 2019, Springer Nature Switzerland AG. The influence of Web search personalisation on professional knowledge work is an understudied area. Here we investigate how public sector officials self-assess their dependency on the Google Web search engine, whether they are aware of the potential impact of algorithmic biases on their ability to retrieve all relevant information, and how much relevant information may actually be missed due to Web search personalisation. We find that the majority of participants in our experimental study are neither aware that there is a potential problem nor do they have a strategy to mitigate the risk of missing relevant information when performing online searches. Most significantly, we provide empirical evidence that up to$$20\%$$ of relevant information may be missed due to Web search personalisation. This work has significant implications for Web research by public sector professionals, who should be provided with training about the potential algorithmic biases that may affect their judgments and decision making, as well as clear guidelines how to minimise the risk of missing relevant information.

Perbaikan dan Perkuatan Fondasi Tiang Bor pada Bangunan Gedung Perkuliahan dengan Penambahan Tiang Pancang Bulat

2021 ◽  
Vol 1 (2) ◽  
pp. 55-60
Author(s):  
Annisa Junaid
Keyword(s):  
Pile Driving ◽  
Integrity Test ◽  
Test Analysis ◽  
Bearing Strength ◽  
Bored Pile ◽  
Load Combination ◽  
Adjacent Building ◽  
Pile Type ◽  
Pile Integrity ◽  
Sudden Collapse

Fondasi harus dibangun di atas tanah keras agar bangunan tetap stabil dan kokoh. Memastikan kekuatan fondasi adalah upaya dini untuk mencegah sudden collapse pada bangunan di kemudian hari. Penelitian ini dilakukan untuk mengetahui kuat dukung tanah pada ujung tiang fondasi dan mengamati sejauh apa kerusakan beton tiang bor pada bangunan yang baru masih dalam tahap pembangunan fondasi. Data penelitian diperoleh dari hasil pengujian PDA (Pile Driving Analyzer) dan PIT (Pile Integrity Test) pada fondasi bangunan jenis bored pile D80. Pada gedung yang berdekatan, yang dikerjakan dengan sistem yang sama dan menggunakan spun pile D50. Data kuat dukung ultimate hasil manometer alat uji hidraulik 175 ton untuk pile D50. Dari analisis uji PDA, diperoleh nilai kuat dukung ijin rata-rata tiang bor adalah 70,25 ton (51%). Analisis ulang terhadap kombinasi beban menghasilkan tambahan spun pile di 44 titik. Pada beton bored pile yang mengalami kerusakan, dilakukan perbaikan seperti penambahan cor pada lapisan luar (concrete-jacketing) untuk menutupi lapisan tulangan yang terekspos, dan penambahan tulangan terpisah di sisi dalam beton untuk antisipasi bila tulangan luar rusak akibat korosi.The foundation must be placed on hard rock so that the building remains stable and solid. Thus, ensuring the strength of the foundation is an early effort to prevent sudden collapse of the building in the future. This research was conducted to determine the bearing strength of the soil at the ends of the foundation piles and to observe the extent of the damage to the drill pile concrete in the new building which is still in the foundation construction stage. The research data were obtained from the results of PDA (Pile Driving Analyzer) and PIT (Pile Integrity Test) testing on the foundation of the bored pile type D80 building. The adjacent building is being worked on with the same system and using a D50 spun pile. With the ultimate bearing strength data, the results of the hydraulic tool manometer = 175 tons for D50 piles. PDA test analysis obtained the average allowable bearing strength of the drill pile is 70.25 tons (51%). The re-analysis of the load combination resulted in additional spun piles at 44 points. In the damaged bored pile concrete, namely by adding cast to the outer layer (concrete-jacketing) to cover the exposed reinforcement layer, and adding separate reinforcement on the inside of the concrete to anticipate if the outer reinforcement is damaged due to corrosion.Fondasi harus dibangun di atas tanah keras agar bangunan tetap stabil dan kokoh. Memastikan kekuatan fondasi adalah upaya dini untuk mencegah sudden collapse pada bangunan di kemudian hari. Penelitian ini dilakukan untuk mengetahui kuat dukung tanah pada ujung tiang fondasi dan mengamati sejauh apa kerusakan beton tiang bor pada bangunan yang baru masih dalam tahap pembangunan fondasi. Data penelitian diperoleh dari hasil pengujian PDA (Pile Driving Analyzer) dan PIT (Pile Integrity Test) pada fondasi bangunan jenis bored pile D80. Pada gedung yang berdekatan, yang dikerjakan dengan sistem yang sama dan menggunakan spun pile D50. Data kuat dukung ultimate hasil manometer alat uji hidraulik 175 ton untuk pile D50. Dari analisis uji PDA, diperoleh nilai kuat dukung ijin rata-rata tiang bor adalah 70,25 ton (51%). Analisis ulang terhadap kombinasi beban menghasilkan tambahan spun pile di 44 titik. Pada beton bored pile yang mengalami kerusakan, dilakukan perbaikan seperti penambahan cor pada lapisan luar (concrete-jacketing) untuk menutupi lapisan tulangan yang terekspos, dan penambahan tulangan terpisah di sisi dalam beton untuk antisipasi bila tulangan luar rusak akibat korosi.

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