scholarly journals Analisis Fondasi Raft Pile Bangunan Tinggi Terhadap Struktur Bangunan Di Sekitar

2020 ◽  
Vol 3 (4) ◽  
pp. 1173
Author(s):  
Giovann Giovann ◽  
Gregorius Sandjaja Sentosa
Keyword(s):  
Bearing Capacity ◽  
Pile Foundation ◽  
Soil Conditions ◽  
Train Station ◽  
High Rise ◽  
Floating Pile ◽  
Bored Pile ◽  
Story Building ◽  
Spt Data ◽  
End Bearing Pile

Raft pile is an option for high rise building that has more than 30 stories on soft to moderate soil conditions. Either spun pile or bored pile can be used as the pile foundation. This study focuses on 34-story building that is constructed near electric rail train station, where the soil type is dominantly clay with average N-SPT 20 – 30, there is also thin layer of soil with N-SPT 60. The study compares two types of piles, 30 m depth floating pile and 32 m depth end bearing pile, where the raft thickness is 2 m. The study was conducted by calculating the bearing capacity and settlement with formulas based from correlations of N-SPT and the N-SPT data. Midas 3D also used to simulate the settlement of the building and settlement around the building. The results show that for bored pile with depth of 30 and 32 m respectively has settlement of 20,757 cm and 3,0475 cm while the settlement around the building consecutively is around 10 – 11 cm and 1,5 – 2 cm. Bearing capacity of bored pile with 30 m depth is around 1593,6779 – 5382,5954 kN while bored pile with 32 m depth  is around 1978,9153 – 6021,3859 kN.Fondasi rakit merupakan salah satu pilihan yang dapat digunakan untuk bangunan tinggi lebih dari 30 lantai pada tanah kondisi lunak sampai sedang. Untuk jenis fondasi tiang dapat digunakan tiang bor atau tiang pancang. Dalam penelitian ini dilakukan studi fondasi bangunan 34 lantai yang didirikan dekat dengan stasiun kereta rel listrik di mana lapisan tanah dominan lempung dengan N-SPT rata-rata 20 – 30 dan juga ada nilai N-SPT 60 namun berupa lapisan tipis. Studi dilakukan dengan membandingkan dua jenis tiang yaitu tiang dengan daya dukung friksi kedalaman 30 m dan tiang dengan daya dukung ujung kedalaman 32 m dengan ketebalan fondasi rakit 2 m. Studi dilakukan dengan menghitung daya dukung serta penurunan menggunakan pendekatan rumus-rumus berdasarkan data N-SPT dan korelasi dari data N-SPT, juga dilakukan simulasi Midas 3D untuk mengetahui besar penurunan yang terjadi di sekitar bangunan. Dari hasil studi banding diperoleh penurunan fondasi tiang 30 m dan tiang 32 m berturut-turut sebesar 20,757 cm dan 3,0475 cm sedangkan penurunan sekitarnya diperoleh berturut-turut 10 – 11 cm dan 1,5 – 2 cm. Daya dukung yang diperoleh tiang 30 m berkisar 1593,6779 – 5382,5954 kN dan tiang 32 m berkisar 1978,9153 – 6021,3859 kN.

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.

The Application Research and Discussion on a Viaduct Artificial Excavated Pile Technology

2012 ◽  
Vol 446-449 ◽  
pp. 2449-2452
Author(s):  
Dong Guo Li ◽  
Gui Mei Shi
Keyword(s):  
Bearing Capacity ◽  
Pile Foundation ◽  
Retaining Wall ◽  
Wall Effect ◽  
Construction Technology ◽  
Application Research ◽  
Technical Work ◽  
Bored Pile

A viaduct of the Qinglai expressway fourth contract was artificial excavated piles. The construction technical work was regarded as an example. The technical comparison were done between the artificial excavated pile and the bored pile on the pile foundation bearing capacity and the retaining wall effect . The artificial excavated pile replacing the bored pile was feasible, and the construction technology and the key problems of the artificial excavated piles were confirmed. The references were provided to the similar projects.

scholarly journals Behavior of Defective Cast in Place Piles

2021 ◽  
Vol 27 (4) ◽  
pp. 96-117
Author(s):  
A'amal A. Al-Saidi ◽  
Mosa J. Al-Mosawe ◽  
Yousef Al-Shakarchi Al-Shakarchi
Keyword(s):  
Bearing Capacity ◽  
Experimental Work ◽  
Critical Case ◽  
Defect Type ◽  
Floating Pile ◽  
Model Pile ◽  
Two Parameters ◽  
Type Of Failure ◽  
Pile Length ◽  
End Bearing Pile

This paper deals with testing defected model piles in the soil in order to study their behavior. In this respect, the results of model pile tests are discussed either geotechnically or structurally according to the type of failure.   Two parameters were studied in order to evaluate the general behavior of defective piles. These parameters include the defect location and the defect type for floating and end bearing pile. The results of the experimental work indicated that the critical case for floating pile is seen to be when the defect of (5%) at the first third of the pile length at which the decrease in the bearing capacity is about (21%), while the decrease in the bearing capacity is found to be (14%) and (10%), when the defect is at the middle and the lower third of the pile length, respectively. The decrease in the bearing capacity for floating pile is found to be (31%) and (21%) for void and neck defect, respectively, while the decrease in the bearing capacity for end bearing pile is found to be (43%) and (52%) for void and neck defect, respectively.

The Engineering Accident Analysis of Cast-In Situ Bored Pile

2012 ◽  
Vol 446-449 ◽  
pp. 1514-1519
Author(s):  
Bin Tang ◽  
Ting Wang ◽  
Zi Ning Shan
Keyword(s):  
Pile Foundation ◽  
Bridge Engineering ◽  
Foundation Engineering ◽  
Construction Process ◽  
Floating Pile ◽  
Bored Pile ◽  
Wrong Identification ◽  
Catheter Tube ◽  
The Impact

Abstract: Cast-in situ bored pile is a common form of pile foundation and widely used in road and bridge engineering in China. Because of complex cast-in situ bored pile construction process, high technical content requirement, vulnerable to the impact of human and environmental factors, cast-in situ bored piles prone to various kinds of quality problems in the construction process, such as drilling deflection, drilling hole collapse and diameter reduction, wrong identification of pile-end’s bearing stratum, catheter tube blockage, reinforcement cage floating, pile breaking, pile silted, etc. These problems often make it difficult to meet the design requirements into a pile formation, and difficultly to remedy. In this paper, Zhoutian Zhenjiang bridge at Shaoguan City, Qujiang to Nanxiong highway A03 contract bid package cast-in situ bored pile foundation engineering encountered in the construction collapsed hole, inclined hole, catheter tube blockage and other issues for example to analyzes the cause of cast-in situ bored pile engineering accident, made appropriate preventive measures and processing method.

scholarly journals Tinjauan Kapasitas Dukung Pondasi Bored Pile Menggunakan Formula Statis Dan Elemen Hingga 2D Pada Gedung E Fakultas Teknik Universitas Islam Riau

2018 ◽  
Vol 18 (2) ◽  
pp. 65-76
Author(s):  
Ramanda Pratama ◽  
Anas Puri ◽  
Sri Hartati Dewi
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Shear Stress ◽  
Bearing Capacity ◽  
Pile Foundation ◽  
Pile Group ◽  
Bored Pile ◽  
Light Load ◽  
Pile Cap ◽  
Element Method

[ID] Pondasi sebagai dasar bangunan harus mampu memikul seluruh beban bangunan dan beban lainnya, untuk diteruskan sampai kelapisan tanah atau batuan dibawahnya. Pemilihan jenis pondasi salah satunya disebabkan oleh jenis tanah dan jenis struktur atasnya, apakah termasuk konstruksi beban ringan atau beban berat, maka dari itu diperlukan stabilitas tanah itu sendiri agar mempunyai kapasitas dukung yang kuat. Tujuan dari penelitian ini menghitung kapasitas dukung aksial, kapasitas dukung lateral, penurunan, defleksi pondasi bored pile menggunakan metode statis dan elemen hingga 2D, menghitung tegangan geser efektif tanah dengan metode elemen hingga 2D yang kemudian membandingkan dengan beban bekerja dan syarat yang diizinkan. Dalam menganalisa beban bekerja pada bangunan dihitung menggunakan bantuan software Etabs v.9. Analisa kapasitas dukung pondasi bored pile tunggal menggunakan metode Aoki & Alancer, Schmertmaan & Nottingham, Begemaan, dan untuk menghitung kapasitas dukung pondasi bored pile (group) digunakan efisiensi kelompok tiang, sedangkan kapasitas lateral dan defleksi digunakan metode Broms dan penurunan pondasi bored pile tunggal menggunakan metode Dee Beer & Marten, untuk kelompok tiang menggunakan metode Vesic dan tegangan geser efektif tanah. Dan akan dilakukan analisa menggunakan elemen hingga 2D dengan bantuan software Plaxis 2D v.8.2. Dari hasil perhitungan dan persentase nilai terbesar kapasitas dukung (Qgall) pondasi bored pilegroup As I-39 dan As C-26 pada titik S-1 dengan metode Schmertmaan & Nottingham sebesar 128%, metode Begemaan sebesar 139% dan elemen hingga 2D sebesar 169% dan dinyatakan pondasi aman terhadap beban yang bekerja pada pile cap, sedangkan metode Aoki & Alancer sebesar 39%, dinyatakan tidak aman terhadap beban yang bekerja pada pile cap. Dan kapasitas beban lateralmetode Broms mampu memikul sebesar 167% dan elemen hingga 2D sebesar 105% dan dinyatakan aman terhadap beban horizontal yang bekerja. Sedang defleksi pondasi bored pile  metode Broms sebesar 2,39 mm, elemen hingga 2D sebesar 3,46 mm, dan penurunan pondasi tunggal dengan metode Dee Beer & Marten sebesar 9,78 mm, elemen hingga 2D sebesar 36,40 mm dan pondasi bored pile group metode Vesic sebesar 21,87 mm dan elemen hingga 2D sebesar 16,78 mm, dapat dinyatakan defleksi dan penurunan memenuhi syarat yang diizinkan, dan tegangan geser efektif tanah tunggal tanpa interface dan dengan interface tidak memenuhi syarat yang diizinkan. [EN] Foundation, as the building basic must be able to carry the whole building load and other loads to be forwarded to the soil or rock layers underneath. Selection of the foundation type one caused by the type of soil and the type of structure above, whether included construction of a light load or a heavy load, therefore it needed the stability of the land itself in order to have a strong bearing capacity. The purpose of this studies are to calculate the axial bearing capacity, lateral bearing capacity, decreasing, and bored pile foundation deflection using static and 2D finite element method, and calculate effective shear stress of soil with 2D finite element method, then compare with the workload and terms are allowed. In analyzing the workload on buildings, the calculation using ETABS software v.9. Analysis of bearing capacity of single bored pile foundation use Aoki & Alancer, Schmertmaan & Nottingham, Begemaan method, and to calculate the bearing capacity of bored pile foundation (group) used the pile groups efficiency, while lateral capacity and deflection used Broms method and reduction single bored pile foundation used Dee Beer & Marten method, for pile group using Vesic method and effective shear stress of soil. And will be analyzed using 2D finite element with Plaxis 2D software v.8.2. From the calculation and the percentage of the bearing capacity greatest value (Qgall), bored pile group foundation As I-39 and As C-26 at S-1 point with Schmertmaan & Nottingham method amounted to 128%, Begemaan method amounted to 139% and the 2D finite element amounted to 169 % and foundation declared safe to the load on the pile cap, whereas Aoki and Alancer method amounted to 39%, declared unsafe to load on the pile cap. And the lateral load capacity Broms method capable of assuming at 167% and the 2D finite element about 105% and declared safe to horizontal workload. Bored pile foundation deflection with Broms method amounted to 2.39 mm, 2D finite element amounted to 3.46 mm, and a decrease in single foundation with Dee Beer & Marten method amounted to 9.78 mm, 2D finite element amounted to 36.40 mm and bored pile group foundation Vesic method amounted to 21.87 mm and 2D finite element amounted to 16.78 mm, it can be stated that deflection and decrease are eligible permitted, and effective shear stress of single soil with and without interface are ineligible permitted.

scholarly journals PENERAPAN ANALISIS VALUE ENGINEERING DENGAN TEORI TRIZ PADA SUBSTRUCTURE PROYEK X

2019 ◽  
Vol 3 (1) ◽  
pp. 81
Author(s):  
Steven Steven ◽  
Johny Johan
Keyword(s):  
Pile Foundation ◽  
Value Engineering ◽  
Engineering Analysis ◽  
Implementation Cost ◽  
Assessment Score ◽  
High Rise ◽  
High Rise Building ◽  
Bored Pile ◽  
Implementation Time ◽  
Object Of Study

Kesuksesan suatu proyek merupakan hal yang ingin dicapai oleh seluruh pihak yang terlibat di dalamnya. Inefisiensi struktur yang terdapat dalam suatu proyek dapat menghalangi pencapaian kesuksesan yang diharapkan dalam suatu proyek. Oleh karena itu, diperlukan suatu teknik yang dapat menanggulangi permasalahan tersebut. Salah satu teknik yang dapat digunakan adalah value engineering. Dalam beberapa studi, telah dilakukan modifikasi pada analisis teknik value engineering. Salah satu modifikasi yang dimaksud adalah dengan menerapkan teknik TRIZ. Penerapan teknik TRIZ dalam analisis value engineering diyakini dapat memberikan kemudahan dalam menemukan solusi dalam permasalahan yang dihadapi. Struktur pondasi suatu proyek high rise building akan dijadikan objek studi. Studi ini bertujuan untuk menemukan sistem pondasi yang dapat diterapkan pada objek studi. Teknik TRIZ yang dilakukan dalam studi ini hanya diterapkan dalam fase kreatif yang terdapat di dalam analisis value engineering. Sistem awal pondasi yang diterapkan dalam objek studi adalah sistem bored pile foundation. Sistem bored pile foundation memiliki total biaya pelaksanaan sebesar Rp 18.719.136.609,24, penurunan rata-rata sebesar 48,24 cm, waktu pelaksanaan selama 92 hari, dan skor penilaian sebesar 122,92. Penerapan teknik TRIZ dalam analisis value engineering memberikan dua buah alternatif, yaitu sistem raft foundation dan raft-pile foundation. Evaluasi yang dilakukan terhadap ketiga sistem yang dianalisis memberikan hasil bahwa sistem raft-pile foundation memberikan hasil yang paling baik dengan total biaya pelaksanaan sebesar Rp 15.910.991.105,30, penurunan rata-rata sebesar 14,17 cm, waktu pelaksanaan selama 87 hari, dan skor penilaian sebesar 144,58. Sistem raft-pile foundation memberikan penghematan biaya sebesar 15% terhadap sistem bored pile foundation.The success of a project is something that all parties involved in it want to achieve. The structure inefficiency found in a project can hinder the achievement of expected success in a project. Therefore, we need a technique that can overcome these problems. One technique that can be used is value engineering. In several studies, modifications have been made to the analysis of value engineering techniques. One modification is meant by applying the TRIZ technique. The application of TRIZ techniques in value engineering analysis is believed to provide convenience in finding solutions to the problems encountered. The foundation structure of a high rise building project will be the object of study. This study aims to find a foundation system that can be applied to the object of study. The TRIZ technique used in this study is only applied in the creative phase contained in the value engineering analysis. The initial foundation system applied in the object of study is the bored pile foundation system. The bored pile foundation system has a total implementation cost of Rp. 18,719,136,609.24, an average reduction of 48.24 cm, an implementation time of 92 days, and an assessment score of 122.92. The application of the TRIZ technique in value engineering analysis provides two alternatives, namely the raft foundation system and the raft-pile foundation. Evaluations conducted on the three systems analyzed give the result that the raft-pile foundation system provides the best results with a total implementation cost of Rp. 15,910,991,105.30, an average decrease of 14.17 cm, an implementation time of 87 days, and assessment score of 144.58. The raft-pile foundation system provides a cost savings of 15% over the bored pile foundation system.

scholarly journals STUDI PERENCANAAN PONDASI TIANG PANCANG PADA JEMBATAN KERETA API KM 95+870 JOMBANG MADIUN

UKaRsT ◽  
2019 ◽  
Vol 3 (1) ◽  
pp. 64
Author(s):  
Fauzie Nursandah
Keyword(s):  
Bearing Capacity ◽  
Carrying Capacity ◽  
Pile Foundation ◽  
Horizontal Load ◽  
Vertical Load ◽  
Railway Bridge ◽  
The Road ◽  
The Stability ◽  
Rolling Stability ◽  
Spt Data

ABSTRACTBridges are complementary buildings that are used to continue the road or railroad that are cut off due to obstacles such as rivers, waterways, roads and valleys. As with the Jombang - Madiun railway bridge BH 258 km 95 + 870 Kertosono. The bridge that was built on the Brantas river aims to increase the number of new lanes to four lanes.The author wants to plan the development with a pile foundation. This foundation is planned by the Mayerhof method based on the SPT data obtained from the Contractor on the construction of the project namely Hutama, Modern Mitra, KSO.In the study of pile foundation planning obtained a vertical load of 8,708,531 tons, horizontal load of 567.69 tons, bearing capacity of the foundations was equal to 10.006.22 tons greater than the axial force that occurred which was 8,708,531 tons. The rolling stability value is 16.04 greater than 1.5 and the stability of the displacement is 4.46 more than 1.5, the stability of the decrease is 22.34 tons / m2 > the carrying capacity of the soil is 12.2 tons / m2 (not okay) then the pile is needed to hold vertical style.Keywords: Bridge, Mayerhof, Pile

scholarly journals STUDI FONDASI TIANG BOR UNTUK JEMBATAN DI LAUT

2021 ◽  
Vol 4 (3) ◽  
pp. 581
Author(s):  
Arvin Arvin ◽  
Aniek Prihatiningsih
Keyword(s):  
Bearing Capacity ◽  
Groundwater Level ◽  
Pile Foundation ◽  
Stable Layer ◽  
Bored Pile ◽  
Casing Pipe ◽  
Level Of Difficulty ◽  
High Level

Structurally, the bridge is separated into the upperstructure, and substructure such as foundation. According to its function, the foundation of the bridge supports and transmits the load from the superstructure to a strong and stable layer of soil. The construction of a bridge at sea has a high level of difficulty and risk. There are forces that influence the foundation at sea. The greater the loads that are held by the foundation, the greater the bearing capacity required for the foundation. The foundation used the bored pile casing method. The concept of a bored pile foundation casing method itself uses a steel casing pipe that is installed to a specified depth. This method is used when the borehole is very prone to landslides, so it is very suitable to be applied to soil which is sand below the groundwater level or at sea. In this paper, we will discuss the bearing capacity of the bored pile foundation and the loads that affect the bearing capacity of the foundation. Bearing capacity includes axial and lateral bearing capacity. So the results of this study will show how much effective bearing capacity must be considered when creating a foundation for bridges at sea.Secara struktural jembatan dipisahkan menjadi struktur atas, dan struktur bagian bawah seperti fondasi. Sesuai fungsinya, fondasi jembatan menopang dan meneruskan beban dari bangunan atas jembatan ke lapisan tanah yang kuat dan stabil/solid. Pembangunan jembatan panjang di tengah laut memiliki tingkat kesulitan dan resiko tinggi. Terdapat gaya-gaya yang mempengaruhi fondasi yang dibuat di laut. Semakin besar beban-beban yang ditahan fondasi maka semakin besar pula daya dukung yang dibutuhkan fondasi. Fondasi yang dipakai adalah fondasi tiang bor dengan metode casing. Konsep dari fondasi tiang bor metode casing sendiri menggunakan pipa selubung baja (casing) yang diinstall sampai kedalaman yang ditentukan. Metode ini digunakan bila lubang bor sangat mudah longsor, sehingga sangat cocok untuk diaplikasikan pada tanah yang merupakan pasir di bawah muka air tanah atau di laut. Pada penulisan ini akan dibahas mengenai daya dukung fondasi tiang bor dan beban-beban yang mempengaruhi daya dukung fondasi tersebut. Daya dukung mencakup daya dukung aksial dan lateral. Sehingga hasil studi ini akan menunjukan seberapa besar daya dukung efektif yang harus dipertimbangkan pada saat ingin membuat fondasi untuk jembatan di laut.

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