SOIL INVESTIGATION BERDASARKAN UJI SONDIR DI KECAMATAN HARAU KABUPATEN LIMA PULUH KOTA

Telah dilakukan penelitian tentang Uji Sondir di Kabupaten Lima Puluh Kota tepatnya di Kecamatan Harau Pada Tahun 2021. Penelitian ini bertujuan untuk mendapatkan daya dukung tanah serta jenis pondasi yang cocok di titik lokasi penelitian sehingga terhindar dari kegagalan struktur (bangunan roboh/runtuh). Metode penyelidikan tanah dilakukan dengan cara pengujian langsung di lapangan menggunakan alat sondir. Data sekunder didapat dari beberapa kajian literatur. Data primer didapat dari hasil sondir di dua titik lokasi yang telah ditentukan. Analisis data menggunakan dua parameter pada setiap kedalaman yaitu Nilai Perlawanan Konus (NK) dalam satuan kg/cm2, Jumlah Hambatan Pelekat (JHP) dalam satuan kg/cm. Kedua parameter diatas dicatat untuk setiap interval 20 cm sampai kedalaman dimana didapatkan nilai NK ≥ 155 kg / cm2, dengan batasan kedalaman maksimum 10 m dari muka tanah setempat. Hasil penelitian sondir diukur dari elevasi ± 0.00 (muka tanah setempat) pada titik 1 NK ³ 155 kg/cm2 didapat pada posisi kedalaman – 10.00 m dengan nilai TFR 410 kg/cm. Sedangkan pada titik 2 didapat pada posisi kedalaman – 6.00 m dengan nilai TFR 248 kg/cm. Berdasarkan perhitungan daya dukung tanah maka jenis pondasi yang cocok untuk perencanaan pembangunan proyek tersebut adalah pondasi dalam (bore pile).

Perencanaan Ulang Pondasi Pilar Jembatan Sikabu Kayu Gadang

The construction of transportation facilities such as bridges plays an important role in the development of human resources today because more and more road users will use these facilities. The Sikabu Kayu Gadang Bridge has a span of 100 meters with a structure of precast concrete, abutments, pillars and a foundation of concrete and steel piles which inspired the authors to conduct research. In this type of selection, several things need to be considered, such as the load being carried and the location of the hard ground. Based on this, this study aims to analyze the deep foundation that can be applied to the project in the hope of getting more efficient results. Based on the re-planning, the bearing capacity of the foundation permit (Qall) is 1254.98 kN with a diameter of 0.5 m and a depth of 20 m. The permitted bearing capacity of the pile group (Qall) is 12795.46 kN to withstand the loads acting on the superstructure. Bore Pile foundation logitudinal reinforcement = 10 D16 and Bore Pile shear reinforcement = ᴓ 12 – 150 mm.

Repair Performance Landslide and Slope Using Bore pile and Ground Anchor on Cipali Toll Road Km 103

One of the causes of on-road collapse slopes is traffic load. Slope failure by road loads usually occurs due to several factors such as soil type, rainfall, land use. This study aims to determine landslide and slope repair performance using bore pile and ground anchor on Cipali Toll Road KM 103. The research method used in this study is the Finite element method. In this research, data collection, modeling parameter determination, slope stability analysis, slope reinforcement analysis, and reinforcement design were carried out with variations in bore pile and ground anchor dimensions. The software program used is a finite element program in the form of PLAXIS to analyze slope stability and estimate the slope failure area. The result of the study is that the R-Value inter is 0.25 with a 1.0341 safety factor. Best repair performance obtained from the addition of reinforcement with ground anchor 2 layer on bore pile 2 with a distance of 2 meters increased the safety factor to 1,913; Borepile capacity calculation with the calculation of normal force and moment iteration, the largest occurs in the DPT (Retaining Wall) stage with a normal load of -37.9 and a moment force of -471.15 which is still able to be borne by bore pile 1. The result of this study is expected to be benchmark and repair material to improve slope stability at km 103 Tol Cipali

Analytical Research of Integrity Testing on Bore Pile

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.

Analytical Research of Vertical Load Test on Bore Pile

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.

STUDI KASUS KEMIRINGAN GEDUNG 4 LANTAI AKIBAT KEGAGALAN FONDASI DI PANGKAL PINANG

Foundation is the lower structure of the building located below the ground that has the function to bear the load of the building. The building has been standing for ± 5 years and the slope of the building is ± 1-20. The authors analyzed soil bearing capacity, settlement and the slope of the building and the possibility of repairing the building for reuse. In 1 pile cap there are 4 bore piles with a depth of 6m-12m, because the pile cap data is not obtained then the size and thickness is assumed and the soil data used is secondary data without lab data derived from soil data in locations adjacent to the building site that is ±100m from the building site. After the analysis, soil bearing capacity is not strong to bear the dead load of the building when using a foundation with a depth of 6m-12m, there is a possibility that the foundation used is not suitable and there is a reduction in the load of the building due to the presence of other buildings that are adjacent to the building in the analysis resulting in a considerable decrease and slope of the building.Fondasi adalah struktur bagian bawah bangunan yang terletak di bawah permukaan tanah yang mempunyai fungsi memikul beban bangunan. Bangunan ini sudah berdiri selama ± 5 tahun dan kemiringan bangunan sebesar ± 1-20. Penulis menganalisis daya dukung tanah, penurunan tanah dan kemiringan bangunan dan kemungkinan memperbaiki bangunan agar dapat digunakan kembali. Pada 1 pile cap terdapat 4 buah bore pile dengan kedalaman 6m–12m, karena data pile cap tidak diperoleh maka ukuran dan ketebalannya diasumsikan dan data tanah yang digunakan adalah data sekunder tanpa data lab yang berasal dari data tanah di lokasi berdekatan dengan lokasi bangunan yang berjarak ±100m dari lokasi bangunan. Setelah di analisis, daya dukung tanah tidak kuat untuk menahan beban mati bangunan bila menggunakan fondasi dengan kedalaman 6m–12m dan ada kemungkinan fondasi yang digunakan tidak sesuai dan terjadi reduksi beban bangunan karena adanya bangunan lain yang berdempetan dengan bangunan yang di analisis sehingga mengakibatkan penurunan dan kemiringan bangunan yang cukup besar.

ANALISIS DAYA DUKUNG DAN PENURUNAN PONDASI TIANG BOR PADA PROYEK PEMBANGUNAN GEDUNG K UNIVERSITAS MUHAMMADIYAH PURWOKERTO

Pondasi merupakan bagian penting dari suatu bangunan sipil, pondasi sebagai dasar penahan beban terdasar dari suatu konstruksi. Pondasi bertugas meletakkan bangunan dan meneruskan beban bangunan atas ke dasar tanah yang cukup kuat mendukungnya. Tujuan dari penelitian ini untuk menghitung daya dukung dan penurunan tiang bor, dimana kapasitas daya dukung pondasi dihitung berdasarkan data SPT dengan menggunakan 2 Metode yaitu Metode Meyerhoff dan Metode Reese & Wright. Dari hasil Analisa dan perhitungan daya dukung tiang kedalaman 18 m, diameter d1 = 0,4m dan diameter d2 = 0,6m. Berdasarkan Metode Meyerhoff, daya dukung tiang tunggal (Qull) sebesar Qu1 = 902,674 ton dan Qu2 = 466,6 ton, sedangkan menggunakan Metode Reese & Wright daya dukung tiang tunggal (Qull) sebesar Qu1 = 474,884 ton dan Qu2 = 296,107 ton. Dari analisa data Shop Drawing dan As Built Drawing dan perhitungan ulang beban aksial menggunakan Etabs 19, cek aman beban aksial yang di pikul oleh bore pile dengan Metode Meyerhoff maupun Metode Reese & Wright setelah dilakukan perbandingan dengan daya dukung izin tiap kelompok, seluruh pondasi tiang bor mampu menahan beban yang bekerja diatasnya, sehingga pondasi dikategorikan aman (Qall > Pp). Perbandingan daya dukung ijin tiang sebesar 1:0,639. Penurunan pondasi yang terjadi pada setiap tiang dikatagorikan aman karena penurunan tidak lebih besar dari penurunan maksimum yang diizinkan.

Bore Pile Foundation Construction without Caused Fine Cracks at Three Heritage Building

Bore pile foundation close heritage building should be no damage. Install the bore pile process had to perfect, nonporous concrete, no necking, no sliding soil, no mixed deep water, Objective the construction of bore pile near heritage buildings did not deformation and no crack. The case study methodology was surveying the process of the installation bore pile at the soft soil. Analyzing the results of the loading test, the process of installing bore piles with limited space, without damaging heritage buildings. Monitoring will determine the success of the bore pile structure, including a slight decrease in the water table in the area and outside the building site. The vibration drill equipment damped by the trench so that it was safe from cracks in the heirloom building. Monitor the mud content in the water that went out at bore done of soil, monitor concrete every 2 m depth of bore pile the volume of concrete the heirloom building was not damaged. Axial bore pile test, lateral test according to design.

Perkuatan Lereng pada Sempadan Sungai Jl. Sultan Agung Kabupaten Jember dengan Dinding Penahan Tanah Kantilever

The land collapsed on Jl. Sultan Agung, Jompo, Jember Regency was reported. A team from the Regional Disaster Management Agency (BPBD) found cracks in the ground under a shop since February 2019. This incident resulted in a landslide of a road with approximately 45 meters long and 10 meters wide that it blocked the river flow, and nine shophouses, which are the assets of the Jember Regency government, collapsed as deep as approximately 4 meters. The cantilever type retaining wall is designed in the landslide area as an effort to revitalize the banks of Jompo river on Jalan Sultan Agung. Cantilever wall design stability refers to SNI 8460: 2017 and was assisted by using the GEO 5 program. The stability of cantilever walls against overturning shows a safety factor value of 3.72 that greater than 2 (safe condition), whereas the stability of cantilever walls against sliding was 1.61 that greater than 1.5 (safe condition), and the stability of the bearing capacity was 8.18 that greater than 3 (safe condition). Cantilever wall structure using concrete quality (Fc ') 40 MPa, and reinforcement quality (Fy) 420 Mpa, with a diameter and a distance of 25 mm and 125 mm respectively. Additional reinforcement was given to the Cantilever Wall, i.e. a bore-pile with a diameter of 60 cm which was fixed to a depth of 6 meters.

Desain Ulang Struktur Bawah Bangunan Studi Kasus: Gedung Kantor DPRD Dharmasraya Provinsi Sumatera Barat

Solid construction certainly has a strong foundation that sustain Minimizing the potential for a settlement and the destruction of the foundation is so important to be known. So we should be able to know exactly how large a bearing capacity of the foundation. The purpose of this thesis is to redesign the foundation witha bore pile foundation. So in terms of knowing the size of the bearing capacity of the foundation, ,we discusses how the value of the bearing capacity of the foundation analytically which in this case using mayerhoff method, the from data SPT will using reese & wright method and mayerhoff method. The value of bearing capacity that we seek to determine the strength of the foundation that suffer a load the which is located thereon. legislative officebuilding Dharmasraya using a pile foundation and design with bore pile foundation, At the point BH-1 the carrying capacity of the single pile foundation is greater than the load, the foundation is said to be safe, Q permits> the rated load is 2000,32 tons > 47,973 tons. At point BH-2 the bearing capacity of the pile foundation of the group is greater than the load, the foundation is said to be safe, Q permits > 2073,532 tons > 1218,989 tons. At point BH-1 the carrying capacity of single bore pile foundation is greater than load carrying, the foundation is said to be safe, Q permit> the mean load is 1230,249 tons > 47,973 tons. At BH-2 point thecarrying capacity of the bore pile foundation is larger than the load, the foundation is said to be safe, Q permits> the rated load is 1222,337 tons > 1218,989 tons.