scholarly journals PENGARUH KEMIRINGAN FONDASI TIANG PANCANG BATTERED PILE PADA TANAH LEMPUNG DAN TANAH PASIR

2020 ◽  
Vol 3 (2) ◽  
pp. 467
Author(s):  
Swendrinata Suwardi ◽  
Andryan Suhendra

The Battered Pile  is one of the foundation designs that aims to increase the lateral bearing capacity of the foundation. Battered Pile are designed with a certain slope that aims to increase the lateral capacity of the soil. The type of soil used will affect the lateral capacity of the pole. Calculation of bearing capacity of the pile is carried out on the condition of clay and sand soils at slope 00 to +200. The calculation results will then be analyzed to understand the effects that occur. The calculation results will be presented in the p-y curve method. The use of this method is expected to make it easier to understand the characteristics of Battered Pile for soil conditions. Based on the analysis it was found that an increase in the  capacity of the pile up to 23% in the slope of 100 to 150. Sand soil in conditions below the surface of the ground water will have a linear carrying capacity and have a lower deflection value when compared to clay soil at a depth of 2 meters. But at a depth of 16 meters, clay has a point where it has a lower deflection value compared to sandy soil.AbstrakTiang pancang Battered Pile merupakan salah satu rekasaya fondasi yang bertujuan untuk meningkatkan daya dukung lateral fondasi. Tiang Battered Pile dipancang dengan kemiringan tertentu yang bertujuan untuk meningkatkan daya dukung lateral tanah. Jenis tanah yang digunakan akan mempengaruhi daya dukung lateral tiang. Perhitungan daya dukung tiang dilakukan pada kondisi tanah lempung dan tanah pasir pada kemiringan 00 hingga +200. Hasil perhitungan kemudian akan dianalisis untuk memahami pengaruh yang terjadi. Hasil perhitungan akan disajikan dalam metode p-y curve. Penggunaan metode ini diharapkan dapat memudahkan dalam memahami karakteristik tiang Battered Pile terhadap kondisi tanah. Berdasarkan analisis didapatkan bahwa terjadi peningkatan daya dukung tiang hingga 23% pada kemiringan 100 hingga 150. Tanah pasir pada kondisi di bawah permukaan air tanah akan mengalami kenaikan daya dukung secara linier  dan memiliki  nilai lendutan yang lebih kecil jika dibandingkan dengan tanah lempung pada kedalaman 2 meter. Tetapi pada kedalaman 16 meter, tanah lempung memiliki titik dimana memiliki nilai lendutan yang lebih kecil jika dibandingkan dengan tanah pasir.

2013 ◽  
Vol 351-352 ◽  
pp. 329-336 ◽  
Author(s):  
Xu Chen ◽  
Hui Min Li

In recent years, the portal frame structure in the actual project has been widely used, but using the finite element method calculation of stable bearing capacity of portal frame is more complex, and very difficult to the design and construction personnel. With the known stability of the cantilever column carrying capacity and the vertex of the lateral displacement under concentrated force, the establishment of the ratio of the portal frame stability capacity and the stability of the cantilever column carrying capacity both in the same concentrated force vertex lateral displacement than the relationship between the structural mechanics solver to seek out frame to the lateral displacement of the vertex under concentrated force, obtained by computing the stability capacity of the portal frame, and with the exact solution comparison and found that the methods of theoretical calculation results coincide with the exact solution, and then get an easy way of solving the portal frame stable bearing capacity. After numerical example, this method is simple, easy to master, and it has important reference value.


2020 ◽  
Vol 9 (1) ◽  
pp. 70-77
Author(s):  
Amanda Rachmad Pratama ◽  
Rida Respati ◽  
Norseta Ajie Saputra

Soil bearing capacity is the ability of the soil to support the foundation load acting on it. To produce an accurate bearing capacity, it is necessary to know the properties and characteristics of the soil. For this reason, a comparison of the carrying capacity of the soil is carried out based on the calculation of CPT / Sondir and SPT to be able to plan a safe and economical pile foundation. The purpose of this study was to determine the amount of soil bearing capacity of the deep foundation in the environment around the Ataqwa Mosque, Baringin Village, Palangkaraya City based on field tests, and based on laboratory tests, and to determine the value of the comparison between the Mayerhof Method and the Schmertmann-Nottingham Method. Based on the Sondir value, it is continued with the calculation of the carrying capacity of the soil, then the calculation results are analyzed and concluded. From the calculation of the value of the carrying capacity of the foundation pile implementation of point 1 (one), the highest value of 400 mm diameter piles in the Meyerhoff method is 75,319 kg, while the lowest bearing capacity value is also at 400 mm piles of 10,676 kg. For point 2 (two), the highest value is obtained at 400 mm diameter piles in the Shmertmann-Nottingham method of 65,853 kg, while the lowest bearing capacity value is also at 400 mm piles of 10,676 kg


2016 ◽  
Vol 10 (1) ◽  
pp. 481-488
Author(s):  
Lianfen Shao ◽  
Xin Zhou ◽  
Hongbiao Zeng

Soil pressure calculation method for Trenchless pipe based on the Terzaghi Soil Arching Theory have been defined in Chinese national standard GB50332-2002, North America standard ASTM F1962-09 and European standard BS EN 1594-2009. At present, the calculation results from all of the three standards have shown discrepancies with the measured soil pressure. There is little research on the issue of discrepancies in each standard based on the same Terzaghi soil arching theory. The comparison has been made to investigate the differences among all the three standards. The conclusions can be made that the calculation in both GB50332 and ASTM F1962 ignores the cohesion and compressibility of the soil, using the same method to calculate sand soil and clay soil, and does not fully consider the effect of the internal friction angle of soils, which lead to a small impact of the soil properties on the arching factor. The BS EN 1594 standard considers the cohesion strength of soils and uses two different methods for pressure of sand soil and clay soil, respectively; The comparisons show that the cohesion strength has a significant impact on soil pressure, and that the former two standards showed a higher soil pressure than BS EN 1594 since both of them ignored the cohesion strength of soils.


2021 ◽  
Vol 21 (01) ◽  
pp. 01-10
Author(s):  
Sarah alwiyah

[ID] Memperbaiki kondisi tanah merupakan salah satu penyelesaian masalah untuk meningkatkan daya dukung tanah dan memperkecil penurunan. Dengan berkembangnya teknologi dalam bidang geoteknik maka perkuatan tanah dapat dilakukan dengan memasang bahan sintetis seperti pemakaian geogrid. Geogrid mengandalkan kekuatan tarik yang tinggi dan kemuluran creep yang rendah, untuk kasus longsoran geogrid ditempatkan pada lapisan tanah, ditimbun, dan dipadatkan lapis demi lapis sehingga dapat menjaga menstabilkan tanah dengan mendistribusikannya menjadi kuat tarik. Tujuan penelitian ini untuk mengetahui pengaruh panjang geogrid terhadap penambahan daya dukung tanah pasir dan jumlah lapisan geogrid yang paling efisien untuk meningkatkan daya dukung tanah pasir terhadap beban pondasi dangkal menerus dengan perkuatan geogrid produk Tencate Geosynthetis asia Sdn Bhd (Malaysia) tipe GX 40/40 serta memiliki short term tensile strength 40 Kn/m.  Penilitian ini dilakukan dengan menggunakan model pondasi menerus yang diletakkan diatas kotak transparan yang diisi pasir dengan kondisi kepadatan relatif (Dr) 20%-40% dan diberi beban tegak lurus menggunakan dongkrak hidrolik. Dari hasil penelitian diketahui model keruntuhan yang terjadi adalah jenis Local shear dimana geogrid mengalami tarikan pada lokasi sekitar dibawah pondasi dengan lapisan teratas dan lapisan kedua mengalami tarikan yang lebih besar. Pada pengujian penempatan geogrid lapisan teratas terhadap pondasi menunjukkan bahwa penambahan kuat dukung terbesar diperoleh pada LG/B = 3. Pada pengujian penggunaan geogrid 2 lapis diperoleh jarak antara lembaran geogrid (s) menunjukkan bahwa penambahan kuat dukung terbesar diperoleh dengan jarak s = 0,4B. Pada pengujian jumlah pemasangan lapisan geogrid menunjukkan bahwa kuat dukung meningkat dari pemasangan 1 lapisan menjadi 2 lapisan dan penambahan jumlah selanjutnya tidak menunjukkan penambahan kuat dukung yang cukup segnifikan. [EN] Improving soil conditions is a solution to the problem to increase the bearing capacity of the soil and minimize subsidence. With the development of technology in the geotechnical field, soil strengthening can be done by installing synthetic materials such as the use of geogrids. Geogrids rely on high tensile strength and low creep elongation, in the case of landslides the geogrids are placed in the soil layer, stockpiled and compacted layer by layer so as to keep the soil stable by distributing it into tensile strength. This experimen was conducted to determine the effect of long a geogrid sand soil beraring capacity and the number of layers of geogrid, the most efficient way to increase soil bearing capacity of shallow foundation of sand on the continuous load with a geogrid reinforcement the product of Tencate Geosynthetis asia Sdn Bhd (Malaysia) type GX 40/40 and The mean ultimate tensile strength 40 Kn/m. The experiment was performed using continuous foundation model placed on a transparent box filled with sand with the relative density (Dr) 20%-40% and given a perpendicular load using hydrolic jack. From the results of research known mode of failure that occurs is a kind of Local shear where the geogrid experienced the pull on the location around under the foundation with the top layer and the second layer having the pull is greater. On testing the placement of the geogrid layer the top to the foundation showed that the addition of strong carrying capacity of the largest obtained in LG/B = 3. On testing the use of geogrid 2 layers obtained by the distance between the sheets geogrid (s) show that the addition of strong carrying capacity of the largest obtained by a distance s = 0,4 B. On testing the installation of a layer of geogrid showed that strong support increased from mounting 1 layer into 2 layers and the addition of a number of further does not show the addition of support strong enough segn.


2021 ◽  
Vol 4 (2) ◽  
pp. 129
Author(s):  
Lintang Ratnasari Satiti ◽  
Yosef Cahyo Setianto Poernomo ◽  
Sigit Winarto ◽  
Andri Dwi Cahyono

The foundation is an important part of the building structure because it functions as a support. The selection of this pile foundation has various considerations, namely the pile foundation can achieve the hardest soil bearing capacity, made with a manufacturing system, then the quality of the concrete can be guaranteed, the soil bearing capacity is not only obtained from the tip of the pile. Foundation planning needs to be well planned to support user safety and comfort. Pile foundation is one type of foundation chosen because it is more cost-effective and quality than other foundations. This study aims to plan the pile foundation for a new building at Baptist Hospital Kediri. The calculations carried out include calculating the load received by each column, the carrying capacity of a single pile permit, the dimensions and depth of the pile, as well as the required pile cap dimensions. Calculation of the pile foundation is carried out using the Mayerhoff method. The calculation results show that the load on the column area (K13) is 212.23.04 tons, the carrying capacity of the single pile permit (Qall) is 87509.33 kg and Quult is 218773.3 kg and the use of 4 piles on one pile with dimensions of 40 x 40 cm with a depth of 10.6 m, With these results can be used as a reference in the construction of a new building Baptist Hospital that is safe and able to withstand the load of the building.


2018 ◽  
Vol 4 (1) ◽  
pp. 56
Author(s):  
Sena Bayu Adji Fitriana ◽  
Indra Noer Hamdhan

ABSTRAKFondasi helical pile adalah fondasi tiang baja yang memiliki helix untuk menambah daya dukung yang dihasilkan. Ada beberapa hal yang dapat dilakukan untuk menentukan kapasitas daya dukung fondasi helical pile seperti, membandingkan metode analitis yang terdiri dari metode cylindrical shear dan metode individual bearing dengan metode elemen hingga. Banyak variasi yang dapat dilakukan untuk meningkatkan daya dukung fondasi helical pile, variasi yang dilakukan untuk mengetahui kapasitas daya dukung fondasi ini seperti menambah jumlah helix dan memvariasikan diameter helix pada helical pile. Hasil perhitungan kapasitas daya dukung akibat bertambahnya jumlah helix menunjukan penambahan sebesar 9,38% pada tanah lempung dan 5,58% pada tanah pasir dan adanya penambahan ukuran diameter tengah sebesar 50% menambah daya dukung sebesar 19,66% pada tanah lempung dan 10,83% pada tanah pasir.Kata kunci:  helical pile, cylindrical shear, individual bearing, elemen hingga ABSTRACTHelical pile foundation is a steel pile that has a helix to increase the bearing capacity. There are several things that can be done to determine the bearing capacity of helical pile such as, comparing analytical methods (cylindrical shear and individual bearing) with finite element method. Many variations can be done to increase the bearing capacity of the helical pile foundation, variations were made to determine the bearing capacity such as increasing the number of helix and increasing the diameter helix on the helical pile. The result of the bearing capacity due to increasing the number of helix shows the addition of 9.38% in the clay soil and 5.58% in the sand soil. By adding 20 cm diameter size of helix, it also increases the bearing capacity 19.66% in clay soil and 10.83% in sand soil.Keywords: helical pile, cylindrical shear, individual bearing, finite element


2020 ◽  
Vol 3 (1) ◽  
pp. 119
Author(s):  
Alfinda Threvanian Putri ◽  
Sigit Winarto ◽  
Ahmad Ridwan

Each region has soil conditions that are not the same as other regions, some have good soil carrying capacity, and some are bad. The soil stabilization process involves mixing the soil with other soils to obtain the desired gradation. Stabilization is carried out if the land at the project site does not meet the requirements when used for engineering certain buildings. In the study of clay soil tested came from Jampi Hamlet of Ngentrong Village, Karangan District, Trenggalek Regency - East Java Province, the method of a mixture of bagasse ash and coconut shell charcoal consisted of 4 variations, each using a different mixture content ie 0%, 7%, 10%, and 15%, This research was conducted at the Civil Engineering Laboratory of Kadiri University. The results of the study showed that the addition of a mixture of bagasse ash and coconut shell charcoal affected soil stability. At a percentage of 15%, it produces a liquid limit of 39%, a plastic limit of 28.38%, a plastic index of 10.62%, the addition is able to improve soil properties, given that the original soil structure has a higher level of plasticity.Setiap daerah memiliki kondisi tanah yang tidak sama dengan daerah lainnya, ada yang mempunyai kondisi daya dukung tanah yang baik dan ada pula yang buruk. Proses stabilisasi tanah meliputi pencampuran tanah dengan tanah lain untuk memperoleh gradasi yang diinginkan. Stabilisasi dilakukan bila tanah di lokasi proyek tidak memenuhi syarat bila digunakan untuk rekayasa bangunan tertentu. Pada penelitian tanah lempung yang diuji ini berasal dari Dusun Jampi Desa Ngentrong Kec.Karangan Kab.Trenggalek – provinsi Jawa Timur, metode campuran abu ampas tebu dan arang batok kelapa terdiri dari 4 variasi, masing-masing mengggunakan kadar campuran yang berbeda yaitu 0%,7%, 10%, dan 15%, Penelitian ini dilaksanakan di Laboratorium Teknik Sipil Universitas Kadiri. Hasil uji penelitian menunjukkan bahwa penambahan campuran abu ampas tebu dan arang batok kelapa berpengaruh terhadap stabilitas tanah. Pada presentase 15% mengahasilkan batas cair 39%, batas plastis 28,38 %, indeks plastis 10,62%, penambahan tersebut mampu memperbaiki sifat tanah, mengingat bahwa struktur tanah asli memiliki tingkat keplastisan yang lebih tinggi.


2021 ◽  
Vol 1033 ◽  
pp. 183-189
Author(s):  
Alex Llauce ◽  
Gary Duran ◽  
Carlos Fernandez

In this paper, performance of gravelly silty sand soil reinforced with geogrid are present and analyzed to improve the carrying capacity. For this, the geogrid was elaborated with a renewable material like bamboo with the same dimensions of polymer geogrids biaxial. This type of soil can be used for the construction of the sub-base and base of a pavement. California Bearing Ratio (CBR) tests was carried out to obtain the bearing capacity of the silty sand soil with and without bamboo geogrid. In addition, laboratory tests were carried out to obtain the mechanical properties of the bamboo. When comparing CBR results, an improvement in the bearing capacity was evidenced with the use of bamboo geogrid with a 20% increase in the carrying capacity. Finally, maximum tensile and bending strength of bamboo were 2000 kgf/cm2 and approximately 0.018 kgf/cm, respectively.


2018 ◽  
Vol 18 (2) ◽  
pp. 77-87
Author(s):  
Dicky Nanda P. ◽  
Anas Puri ◽  
Sri Hartati Dewi

[ID] Pembangunan gedung mahasiswa pada kawasan Universitas Islam Riau merupakan bangunan bertingkat 4 yang berfungsi sebagai tempat sekretariat organisasikemahasiswaan, kondisi tanah pada lokasi pembangunanGedung Mahasiswa pada Kawasan Universitas Islam Riaudidapat pada titik sondir 1 pada yaitu sebesar 50 kg/cm2 Sedangkan pada titik sondir 2 yaitu sebesar 100 kg/cm2. Penelitian ini merumuskan masalah apakah daya dukung tiang bor (bored pile) pada bangunan gedung mahasiswa Kawasan Universitas Islam Riau aman terhadap beban aksial, beban lateral dan momen dengan memperhitungkan beban mati, beban hidup, beban angin dan beban gempa, serta Berapa besar penurunan dan defleksi horizontal yang terjadi dengan menggunakan bantuan software ETABS v.9, menghitung kuat dukung, penurunan dan defleksi horizontal dengan metode elemen hingga menggunakan PLAXIS 2D. Pembangunan gedung mahasiswa dikawasan Universitas Islam Riau Pekanbaru yang berlokasi dijalan Kaharuddin Nasution No.113 Marpoyan Damai-Pekanbaru Riau. Parameter tanah menggunakan data uji sondir dengan  kedalaman pondasi 12 m dan diameter 30 cm, Metode yang digunakan pada penelitian ini sesuai dengan tujuan penelitian dalam perhitungan daya dukung pondasi bored pile dan perpindahan yang terjadi dengan metode elemen hingga menggunakan PLAXIS 2D. Hasil perhitungan memperlihatkan bahwa kapasitas daya dukung aksial pada titik sondir 1 yaitu sebesar 323,072 kN dan kapasitas daya dukung aksial pada titik sondir 2 yaitu sebesar 432,823 kN sedangkan untuk daya dukung lateral pada titik sondir 1 didapat yaitu sebesar 125,016 kN, pada titik sondir 2 yaitu sebesar  190,703 kN dan penurunan pada titik sondir 1 yaitu 40,04 mm dan pada titik sondir 2 yaitu 25,69 mm sedangkan untuk defleksi horizontal pada titik sondir 1 yaitu 10,91 mm dan pada titik sondir 2 yaitu 6,81 mm. Jadi defleksi horizontal yang terjadi pada titik sondir 1 dan 2 belum memenuhi syarat yang di ijinkan. [EN] The construction of a student building in the Riau Islamic University area is a 4-storey building that serves as a place for student organization secretariat, soil conditions at the construction site. The Student Building in the Islamic University Area of ​​Riaud can be found at sondir 1 at 50 kg / cm2, whereas at sondir 2 is 100 kg / cm2. This study formulates the problem of whether the carrying capacity of bored piles in the buildings of the Riau Islamic University Region building is safe from axial loads, lateral loads and moments by calculating dead loads, live loads, wind loads and earthquake loads, and how much reduction and deflection horizontal that occurs using the help of ETABS v.9 software, calculates the horizontal bearing strength, decrease and deflection using the finite element method using PLAXIS 2D. The construction of a student building in the Riau Islamic University area of ​​Pekanbaru, located on the Kaharuddin Nasution street No.113 Marpoyan Damai-Pekanbaru Riau. Soil parameters using sondir test data with a foundation depth of 12 m and a diameter of 30 cm, the method used in this study is in accordance with the research objectives in calculating the carrying capacity of the bored pile foundation and displacement that occurs with the finite element method using PLAXIS 2D. The calculation results show that the axial carrying capacity at sondir point 1 is 323,072 kN and the axial carrying capacity at sondir point 2 is 432,823 kN while for lateral carrying capacity at sondir point 1 is 125,016 kN, at sondir 2 190,703 kN and decrease at sondir point 1 is 40,04 mm and at sondir point 2 is 25,69 mm while for horizontal deflection at sondir point 1 is 10.91 mm and at sondir point 2 is 6,81 mm. So the horizontal deflection that occurs at sondir 1 and 2 does not meet the permitted requirements.


Neutron ◽  
2019 ◽  
Vol 19 (1) ◽  
pp. 64-71
Author(s):  
Januario D C Fernandes

This study presents a simulation of coastal reclamation deposits with geotextiles in areas with the weakest soil profile. Case studies related to deeds and improvement of slopes with woven geotextiles. Observations and investigations show that the land is sand soil which has a low carrying capacity. Weak soil parametric effects, geotextile webbing, external loads, and earthquake loads were analyzed by PLAXIS. The calculation results show reinforcement with woven geotextiles and against external loads and earthquake loads, having a large safety factor.


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