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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur MEDIA KOMUNIKASI TEKNIK SIPIL Teknik Sipil dan Arsitektur Jurnal Teknik Sipil dan Perencanaan Jurnal Transportasi Prosiding Forum Studi Transportasi Antar Perguruan Tinggi Jurnal Teknik Sipil dan Arsitektur Jurnal Indonesia Sosial Teknologi Teknologi Sipil : Jurnal Ilmu Pengetahuan dan Teknologi INERSIA
Hary Christady Hardiyatmo, Hary Christady
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Neuroscience Social Sciences Transportation Other

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BEHAVIOR OF NAILED-SLAB SYSTEM ON SOFT CLAY DUE TO REPETITIVE LOADINGS BY CONDUCTING FULL SCALE TEST Puri, Anas; Hardiyatmo, Hary Christady; Suhendro, Bambang; Rifa'i, Ahmad
Prosiding Forum Studi Transportasi Antar Perguruan Tinggi Vol 2 No 1 (2015): Prosiding Forum Studi Transportasi antar Perguruan Tinggi
Publisher : FSTPT Indonesia

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Abstract

The Nailed-slab System is not a soil improvement method, but rather as an alternative method to improve the performance of rigid pavement on soft soils. The installed piles under the slab were functioned as slab stiffeners. This research is aimed to learn the behavior of Nailed-slab System under repetitive loadings and its consideration for practical application. The full scale Nailed-slab System was conducted on soft clay which consisted of 6.00 m x 3.54 m slab area with 0.15 m in slab thickness, 15 short micro piles (0.20 m in diameter, 1.50 m in length, and 1.20 m in pile spacing) as slab stiffeners which installed under slab. Piles and slab were connected monolithically, then in due with vertical concrete wall barrier on the two ends of slab. The system was loaded by vertical repetitive loadings. Results show that the installed piles under the slab which embedded into the soils were functioned as slab stiffeners and were able to response similarly in 3D. This system has higher resistance due to vibration. Thereby, the Nailed-slab system is promising for practical application.
Uji Beban Timbunan yang Diperkuat dengan Sistem Pelat Terpaku pada Tanah Gambut Waruwu, Aazokhi; Hardiyatmo, Hary Christady; Rifa’i, Ahmad
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 25, Nomor 2, DESEMBER 2019
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (473.925 KB) | DOI: 10.14710/mkts.v25i2.21018

Abstract

One of the problems with peat soils, when subjected to imposed loads of construction, is the very high compression and long-term excessive settlement. The embankment can be built on peat soil, but it needs reinforcement that can contribute to increasing the stability of the embankment. The nailed slab system, as reinforcement, is expected to reduce settlement and increase the stability of peat soil. The aim of this paper is to study the effect of pile length and distance on the reduction of settlement in both monolithic and non-monolithic piles. The embankment load test was conducted on 70 cm x 120 cm plates, which were reinforced pile with different lengths and distances in the peat soil layer. The analysis was conducted on the reduction settlement of monolithic and non-monolith pile. The results showed that the length and distance of the pile had an effect on the reduction settlement. Changes in pile length are more dominant reducing settlement compared to changes in pile distance. Pile connection with slab has a significant effect on different lengths of piles than different distances piles.
The Mechanism of Rainfall-Induced Landslide Around Railway Tracks in Central Java Province, Indonesia Octaviarini, Ika Sakti; Fathani, Teuku Faisal; Hardiyatmo, Hary Christady; Amalina, Anisa Nur; Erzagian, Egy
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 19 No. 2 (2023): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v19i2.66835

Abstract

Landslide is one of the most disastrous natural hazards in Indonesia, causing significant fatalities and economic losses. Landslides can be triggered by several factors, such as rainfall, earthquakes, soil conditions, and others, where each landslide event has its own triggering and controlling factors. A progressive landslide occurred on the Central Java railway line which resulted in damage to the double-track railway as a transportation infrastructure. The objective of this paper is to understand the process and triggering factors of the landslide. Information was collected through field investigations and measurements based on drilling results at 3 points, geophysical surveys at 5 lines, and laboratory testing of several soil samples. Geological and geotechnical settings, topography, lithology, hydrogeology, and rainfall data of the area were analyzed. Aerial photographs and other remote sensing data were used to evaluate and discuss the information. Landslides in the study area occurred in stages, starting with the formation of a tension crack, followed by two landslides over five months. The results show that the clay material that dominates the study area is the dominant controlling factor of a landslide, triggered by long-duration, low-intensity rainfall. Rainwater entering through tension cracks increases moisture content, adding load to the slope and triggering landslides. Furthermore, the train's external load on the slope also contributes to the occurrence of landslides. The static and cyclic load of the train causes changes in the slope's pressure balance, generating a force that drives the downslope soil. Further analysis was performed using back analysis method with the limit equilibrium method to enhance understanding of slope stability parameters at the time of slope failure. The analysis was performed considering the rising groundwater level. A factor of safety (FS) value of 0.989 was obtained at the end of the simulation, indicating that the slope had failed.
Comparison of Field Ultimate Capacity (Static and Dynamic Load Test) with the Analytic Design of Bored Pile in Granular Soil, Batam, Indonesia Kurniadhi, Rizki; Hardiyatmo, Hary Christady; Faris, Fikri
Jurnal Teknik Sipil dan Perencanaan Vol 25, No 2 (2023)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jtsp.v25i2.45485

Abstract

A bored pile provides a large capacity obtained to toe and friction pile to support some loads such as axial, lateral, and tensile due to hydrostatic pressure or overturning moment. Static and dynamic load tests are often carried out to validate pile design before pile production in a project. This study aims to compare the ultimate capacity of the pile based on the result of static load test, dynamic load test, and pile design in granular soil of Batam, Indonesia, in which Chin-Kondner, Mazurkiewicz, Davisson, and Hansen 80% methods are utilized to obtain ultimate capacity (Qu) of static load test and dynamic test analysis apply Case Pile Wave Analysis Program (CAPWAP) method to gain ultimate capacity. The result analysis of the static load test of ultimate capacity using Chin-Kondner, Mazurkiewicz, Davisson, and Hansen 80% methods obtained results of 1379, 1300, 1375, and 1182 tons, respectively, with a Qu average of 1309 tons. A bearing capacity (RMX) of 1204 tons was obtained through a dynamic load test. Using the CAPWAP method based on the dynamic test, the ultimate bearing capacity (Ru) of 1248 tons was obtained. Analysis of pile design shows that the ultimate capacity of the bored pile in the granular soil of Batam, Indonesia, was 1157 tons. The Qu examination between field loading testing (1278.5 tons) and design pile foundation (1158 tons) was 9.4%.
EVALUASI BANGUNAN PENGAMAN LERENG SUNGAI CILIWUNG RUAS KALIBATA DENGAN MENGGUNAKAN ANALISIS BERDASARKAN LOAD RESISTANCE FACTOR DESIGN Harjanto, Furqaan; Adi, Agus Darmawan; Hardiyatmo, Hary Christady
Jurnal Teknik Sipil dan Arsitektur Vol. 29 No. 2 (2024): JURNAL TEKNIK SIPIL DAN ARSITEKTUR
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v29i2.3748

Abstract

ABSTRAK Dinding penahan tanah merupakan struktur yang biasa digunakan untuk menahan tanah dengan kemiringan lereng yang lebih curam melebihi yang dapat ditahan oleh tanah itu sendiri. Metode tersebut diterapkan pada lereng Sungai Ciliwung Ruas Kalibata yang menggunakan dinding penahan tanah tipe non gravitasi. Namun konstruksi tersebut mengalami longsor saat terjadi banjir, sehingga penelitian ini memiliki tujuan untuk mengetahui jenis konstruksi penahan tanah yang dapat digunakan, serta stabilitas masing – masing jenis konstruksi penahan tanah. Analisis dilakukan pada potongan dengan kode P.07 menggunakan data tanah berupa hasil bor dengan kode BH-24, dan data laboratorium hasil pengujian dari bor tersebut pada tiga kedalaman sampel yang berbeda. Analisis menggunakan metode Load Resistance Factor Design dengan bantuan software GEO5. Hasil analisis pada semua kombinasi beban menunjukkan jenis dinding penahan tanah tipe semi gravitasi kantilever tidak dapat digunakan karena tidak memenuhi stabilitas geser, eksentrisitas dan daya dukung pada semua kombinasi beban. Untuk jenis non gravitasi kantilever tidak memenuhi terhadap kombinasi Layan 1 dikarenakan nilai perpindahan horizontal yang besar, sehingga digunakan perkuatan angkur. Pada kombinasi Kuat 1 dengan angkur, memberikan hasil kedalaman penetrasi sebesar 18.4 meter dengan angkur dipasang pada kedalaman 2.5 meter dari permukaan, dan perpindahan horizontal sebesar 2.7 centimeter
PERANCANGAN ULANG KONSTRUKSI JALAN MENGGUNAKAN SISTEM PELAT TERPAKU SEBAGAI PERKERASAN PADA JALAN POROS SAMARINDA-BONTANG Fitriyani, Wahyu; Utomo, Suryo Hapsoro Tri; Hardiyatmo, Hary Christady
Jurnal Transportasi Vol. 23 No. 1 (2023): Jurnal Transportasi
Publisher : Forum Studi Transportasi antar Perguruan Tinggi (FSTPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26593/jtrans.v23i1.6641.1-10

Abstract

Abstract Section SP.3 Lempake–SP.3 Sambera is the section with the highest traffic volume on Jalan Poros Samarinda–Bontang, resulting in a lot of pavement damage. The damage to the road segment was caused by several factors, namely heavy vehicles, poor soil characteristics, non-functioning drainage, and the road section is located in the lowlands. The purpose of this research is to design a nailed slab system as a pavement to be used as an alternative to road pavement. The design was carried out using the AASHTO method and the Beam on Elastic Foundation method, with the load P at the center and at 0.30 m from the edge of the plate. The equivalent modulus reaction obtained for the AASHTO method was 48,515.785 kN/m³ and the resulting pavement slab thickness was 32.26 cm. While the Beam on Elastic Foundation method uses an equivalent modulus reaction value of 127,715.785 kN/m³ and the resulting pavement slab thickness is 20 cm. However, nailed slab system pavements are more expensive, because the total cost to be incurred is IDR 549,846,268,988, which is much higher than the total cost for conventional pavements, which is IDR 292,549,365,858. Keywords: road pavement; rigid pavement; nailed slab system; conventional pavement. Abstrak Ruas SP.3 Lempake–SP.3 Sambera merupakan ruas dengan volume lalu lintas tertinggi di Jalan Poros Samarinda–Bontang, sehingga mengalami banyak kerusakan. Kerusakan pada ruas jalan tersebut disebabkan oleh beberapa faktor, yaitu kendaraan berat, karakteristik tanah yang kurang baik, drainase tidak berfungsi, dan ruas jalan terletak di dataran rendah. Tujuan penelitian ini adalah merancang sistem pelat terpaku sebagai perkerasan untuk dijadikan alternatif perkerasan jalan. Perancangan dilakukan dengan metode AASHTO dan metode Beam on Elastic Foundation, dengan beban P di pusat dan di 0,30 m dari tepi pelat. Nilai modulus reaksi ekivalen yang diperoleh untuk metode AASHTO adalah 48.515,785 kN/m³ dan tebal pelat perkerasan yang dihasilkan adalah 32,26 cm. Sedangkan metode Beam on Elastic Foundation menggunakan nilai modulus eaksi ekivalen 127.715,785 kN/m³ dan tebal pelat perkerasan yang dihasilkan adalah 20 cm. Akan tetapi, perkerasan sistem pelat terpaku lebih mahal, karena total biaya yang harus dikeluarkan adalah Rp549.846.268.988, yang mana nilai ini jauh lebih besar daripada total biaya untuk perkerasan konvensional, yaitu Rp292.549.365.858. Kata-kata kunci: perkerasan jalan; perkerasan kaku; sistem pelat terpaku; perkerasan konvensional.
STUDI EKSPERIMENTAL FONDASI DANGKAL DENGAN BEBAN TARIK PADA TANAH PASIR Ahmad, Raudah; Adi, Agus Darmawan; Hardiyatmo, Hary Christady
JURNAL INERSIA Vol. 7 No. 1 (2015): Jurnal Inersia
Publisher : POLITEKNIK NEGERI SAMARINDA

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Abstract

Investigasi pada gaya tarik ke atas fondasi dangkal telah diungkapkan. Faktor-faktor yang mempengaruhi hubungan antara beban tarik ke atas dan perpindahannya adalah bentuk telapak dan kedalaman fondasi. Hasil uji di Laboratorium ditampilkan dalam studi ini yang dibandingkan dengan metode analisis dari teori yang telah ada. Penelitian dilakukan pada tanah pasir murni. Bentuk telapak yang digunakan adalah persegi dan lingkaran dengan diameter 30 cm. Rasio kedalaman terhadap diameter telapak adalah 0,33;0,67 dan 1. Hasil uji Laboratorium menunjukkan perbedaan hasil dengan Hasil analisis. Hasil pengujian tarik diperoleh kapasitas ultimit tarik dan diameter bidang runtuh di permukaan meningkat dengan bertambahnya kedalaman. Prisma tanah yang terangkat membentuk sudut kelongsoran yaitu q = ½f. Hasil pengujian tarik model fondasi dangkal dengan telapak persegi lebih besar 28,35% terhadap telapak lingkaran pada lebar (B) dan diameter (D) yang sama. Das dan Seeley (1975) menghasilkan nilai kapasitas ultimit tarik terbesar. Metode Bowles (1988) menghasilkan nilai terkecil. Metode Murray dan Geddes (1987) memiliki nilai yang mendekati hasil pengamatan.
Effects of Gap on Erosion Surrounding Culvert Joints - An Experimental Study Kuswari, Sari; Hardiyatmo, Hary Christady; Fathani, Teuku Faisal
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 20 No. 2 (2024): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v20i2.72119

Abstract

Culvert is one of the drainage systems designed to transport water from one place to another place. Soil erosion can occur due to gaps in the joints of culverts, leading to phenomena such as piping, backward erosion, and suffusion caused by water discharge. When water flows through a gap culvert joint, it makes the soil around it fluid, which can result in sand boiling, and eventually, the formation of sinkholes. Water entrains soil particles, reducing soil density around the culvert, forming voids that expand with erosion. A laboratory-based study investigated gaps in culvert joints, and found that water flow velocity and duration significantly influence soil erosion. Water flow transports eroded materials into culverts, with most soil particles settling around the joints. The gaps of culvert joints can impact erosion, with larger gaps leading to greater influx of soil particles into the culvert. Longer flow durations also result in greater erosion, as fluidization of the soil leads to increased erosion. On the other hand, larger lengths of culvert joints result in reduced erosion. Soil accumulation along the culvert joints cover and clogging contribute to this phenomenon. Culverts lacking joints cover suffer significant erosion, with soil particles entering the culvert. Sedimentary material is predominantly found within the culvert rather than being carried out by the flow. Additionally, the size of eroded soil particles affects the width of the gaps, typically ranging from 0.25 - 0.4 mm. The erosion phenomenon that occurs around culvert joints can lead to long-term effects.
Effect of Parametric Soil Nailing under Seismic Behavior Ramayanti, Anggie; Faris, Fikri; Hardiyatmo, Hary Christady
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 20 No. 2 (2024): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v20i2.74144

Abstract

The Wonogiri region has hilly contours that make the area vulnerable to slope failure. Treatment of slope failure can be done by several methods, such as geometry changes, controlling drainage and creating structures for stability such as soil nailing. Soil nailing has proven useful as a slope reinforcement with several advantages such as low cost and fast implementation. This study aims to see the effect of the parametric behavior of soil nailing on the displacement and axial force of the nail bar under earthquake conditions. First, soil nails are modeled in the finite element method with variations in length, horizontal distance, and vertical distance between nails by applying pseudo-static load based on the history of the largest earthquake that have occurred at the research location, then displacement and axial forces on the nail bar are checked. The modeling shown that increasing the length increases the safety factor, reduces the displacement of the soil nailing wall, and reduces the axial force on the nail bar, as it increases the length of the nail behind the landslide plane and increases the friction between the nail and the soil which resists excessive displacement of the soil surface. Meanwhile, increasing the horizontal and vertical spacing reduces the safety factor, increases the displacement of the soil nailing wall, and reduces the axial force on the nail bar, due to the increased friction between the nail and the soil. Vertical nail spacing variation has more effect on safety factor, displacement, and axial force than horizontal nail spacing variation.
METODE VACUUM PRELOADING SEBAGAI SALAH SATU ALTERNATIF SOLUSI PEMBANGUNAN TIMBUNAN DI ATAS TANAH LUNAK Hardiyatmo, Hary Christady
Teknologi Sipil : Jurnal Ilmu Pengetahuan dan Teknologi Vol 1, No 1 (2017): JTS TEKNOLOGI SIPIL
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ts.v1i1.2136

Abstract

Banyak bangunan infrastruktur transportasi dibangun pada tanah lunak yang tebal, sehingga masalah penurunan yang berlebihan menjadi penting dan harus dicari solusinya. Pada lokasi tersebut, sebelum dilakukan pembangunan infrastruktur, umumnya dilakukan lebih dulu perbaikan tanah guna menjamin stabilitas jangka pendek maupun jangka panjangnya. Cara-cara perbaikan tanah yang yang lazim dilakukan dapat berupa pembongkaran dan penggantian, prapembebanan, drainase vertikal, injeksi, stabilisasi tanah, perkuatan tanah dan lain-lainnya. Salah satu alternatif cara perbaikan tanah yang sering digunakan dalam Pembangunan timbunan pada tanah lunak adalah drainase vertikal. Dalamperkembangannya, pada waktu sekarang ini, drainase vertikal konvensional dikombinasikan dengan prapembebanan vakum. Beberapa keuntungan dapat diperoleh dari cara ini, antara lain tinggi timbunansebagai preload dapat direduksi dan masalah ketidakstabilan lereng timbunan saat pembangunan dapat diminimalkan. Keberhasilan pemakaian metode vakum ini bergantung banyak faktor, seperti: kebocoransistem membran, adanya lensa-lensa tanah lolos air di dalam zona tanah yang ditangani. Makalah ini menyajikan state-of-the art dari berbagai hal yang menyangkut teori dan aplikasi metode prapembanan vakum bila digunakan dalam perbaikan tanah lunak.
Co-Authors Aazokhi Waruwu Abdurrahman, Ekie Aulia Agus Darmawan Adi Ahmad Rifa’i Ahmad, Raudah Amalina, Anisa Nur Anas Puri, Anas Bambang Suhendro Dwikorita Karnawati Erzagian, Egy Fikri Faris, Fikri Fitriyani, Wahyu Furqaan Harjanto Hidayah, Meylani Nurul Kurniadhi, Rizki Kuswari, Sari Octaviarini, Ika Sakti Ramayanti, Anggie Rifa'i, Ahmad Srijono Srijono, Srijono Teuku Faisal Fathani Utomo, Suryo Hapsoro Tri Veithzal Rivai Zainal Winarti, Dwi