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I Putu Laintarawan
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 1 
PEMODELAN PELENGKUNG BETON BERTULANG DENGAN MEMPERHITUNGKAN INTERAKSI TANAH DAN STRUKTUR (KASUS: ALTERNATIF RENCANA JEMBATAN SERANGAN – TANJUNG BENOA) I Putu Laintarawan; I Made Sukrawa; I Ketut Sudarsana
Jurnal Ilmiah Teknik Sipil Vol. 10, No. 1 Januari 2006
Publisher : Department of Civil Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (32.488 KB)

Abstract

The Serangan-Tanjung Benoa Bridge is designed as a reinforced concretearch bridge as it usually built on hard soils, so it can be modelled as a fixed arch.However, the brigde was design on soft soil (N < 15) with hard soil (N > 50), 30 mbelow. Therefore, it is necessary to study the behavior of arch structure consideringsoil-structures interaction, due to vertical and lateral loads.Two models were made in order to model the soil-structure interaction: Model 1, thelateral soil supports is modelled as spring; Model 2, soil and foundation are modelledas solid element. Model 3, fixed arch was modelled without foundation. While modelling the soil as spring and solid, pile groups were asssumed as caisson and weremodelled as solid, and the elastic modulus of soil between piles is equal to the elasticmodulus of pile and its values were varieted and compared to the fixed model.Modulus of base soil lateral reaction, kh is modeled as spring with E of 28 N anduniformly distributed on caisson surface area behind the load. The finite elementmethod was made in 3D using SAP2000 program with static and time history analysisfor vertical and earthquake load, respectively.Soil modelled as spring and solid element in soil-structure interaction showcompatible, in which the deformation and internal forces varied by less than 2%. Themaximum deflection occurred on the peak of arch due to dead load of 191.4 mm, or37.87% smaller than the maximum deflection of the model including soil-structureinteraction. Moreover, fixed arch model has natural period of 2.37 second, which is0.39 second shorter than that including soil-structure interaction. With E greater than9000 MPa (sandstone type) the three models give deformation and internal forces itcompatible values with differences less than 2.2%.
MENELUSURI KEBERADAAN JARINGAN IRIGASI SUBAK DI KOTA DENPASAR MADE NOVIA INDRIANI; IDA AYU PUTU SRI MAHAPATNI; I NYOMAN SUTA WIDNYANA; I PUTU LAINTARAWAN
JURNAL SEWAKA BHAKTI Vol 2 No 1 (2019): Sewaka Bhakti
Publisher : UNHI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (944.284 KB) | DOI: 10.32795/jsb.v2i1.289

Abstract

Keberadaan subak di Bali sebagai sistem pengaturan air secara tradisional sudah berusia ribuan tahun. Pada era sekarang yang cenderung berkutat dengan berbagai teknologi terkini mungkin jarang sekali yang mengetahui dan paham mengenai subak atau irigasi tradisional Bali tersebut. Subak merupakan sistem pengelolaan pendistribusian aliran irigasi pertanian khas masyarakat Bali dan terbukti mampu meningkatkan produktivitas pertanian masyarakat Bali. Melalui sistem subak ini para petani mendapatkan jatah air sesuai ketentuan yang diputuskan dalam musyawarah warga. Pengabdian menelusuri keberadaaan jaringan irigasi subak di Kota Denpasar, dilakukan untuk mengetahui keberadaan jaringan irigasi subak serta keberlanjutan pengelolaan jaringan irigasi subak di kota Denpasar. Metode yang digunakan dalam penelitian ini adalah metode deskriptif yang bertujuan untuk membuat deskripsi atau gambaran secara sistematik agar dapat mencapai sasaran yang telah ditetapkan, melalui suatu alur pemikiran yang logis dan sistematis. Adapun teknik pengumpulan data yang dilakukan antara lain melalui telaah referensi maupun pengumpulan data-data sekunder yang diperoleh dari instansi-instansi pemerintahan mengenai informasi subak di kota Denpasar. Sedangkan data primer diperoleh dengan melakukan pengamatan atau observasi di lapangan, survey pengukuran dan juga melalui proses wawancara kepada pihak-pihak yang terlibat langsung mengenai jaringan irigasi subak di wilayah kota Denpasar. Adapun anggota khalayak yang dilibatkan dalam kegiatan pengabdian kepada masyarakat ini antara lain klian subak/ pekaseh, serta krama subak atau anggota subak sebagai sumber informasi yang dikumpulkan melalui wawancara dan survey secara langsung di lapangan. Hasil pengumpulan data/ inventarisasi tersebut serta telaah mengenai keberlanjutan pengaturan air irigasi berdasarkan data existing yang sudah terkumpul kemudian diserahkan kepada masyarakat, pengurus subak serta pihak atau instansi terkait pemerintah kota Denpasar. Keberadaan sistem jaringan irigasi subak di kota Denpasar saat ini dengan kondisi baik relatif lebih sedikit dibandingkan dengan kondisi rusak ringan berat, rusak sedang dan rusak ringan. Sehingga untuk keberlanjutan pengelolaan jaringan irigasi subak di kota Denpasar, diperlukan kerjasama dari pihak-pihak yang terkait untuk melakukan kegiatan pencegahan, pemeliharaan serta pengelolaan jaringan irigasi subak dengan baik.
Struktur Dan Desain Bangunan Tradisional Bali Di Banjar Cekeng, Desa Sulahan, Bali Made Novia Indriani; Ida Ayu Putu Sri Mahapatni1; I Putu Laintarawan; I Wayan Artana
Techno (Jurnal Fakultas Teknik, Universitas Muhammadiyah Purwokerto) Vol 24, No 1 (2023): Techno Volume 24 NO.1 April 2023
Publisher : Universitas Muhammadiyah Purwokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/techno.v24i1.16980

Abstract

The structure and design of traditional Balinese buildings are still great features, especially when it comes to keeping culture, society, and religion alive in old buildings. Research on building design structures still needs to be reported. This study aims to analyze the structure and design of traditional Balinese buildings in Banjar Cekeng, Sulahan Village, Bali. The mixed method study design was used to direct residents of Br Cekang to sekanem and Paon buildings. Data analysis is carried out descriptively. As a result, the traditional Balinese structure and design of the Sakanem and Paon (kitchen) in Banjar Cekeng meet SNI based on structural analysis. The findings show the strength of the structure for the beams and that the bale Sakanem and Paon horses have sufficient vertical rigidity to withhold the working boundary loads. Furthermore, at the lateral deviation of the Sakanem and Paon building structures, they have sufficient lateral rigidity to withstand the earthquake loads in the x and y directions. Maximum factored force analysis obtained the results of the structures of models 1 (Sakanem), consisting of column and beam structure components made of wooden material, and models 2 (Paon), with concrete column structure components, bamboo, and wooden beams. The nominal bending and sliding capacities of Sakanem and Paon beams are greater than the ultimate bending and sliding capacities. The combined capacity of bending and axial columns in Sakanem and Paon buildings is smaller than the bending and axial capacity of ultimate and practical columns in Paon buildings, not crossing the interaction boundary line.
Analisis dan Perkuatan Kolom Baja Struktural Akibat Beban Gempa Menggunakan HBeam Silvi, Ni Putu; Laintarawan, I Putu
Jurnal Ilmiah Rekayasa Sipil Vol 20 No 1 (2023): April 2023
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jirs.v20i1.1025

Abstract

Evaluation or study of existing building structures must consider the strength and stiffness of structural components due to gravity loads and earthquake loads. The strengthening to the existing Hbeam column structure is to add steel plates to the existing Hbeam column. This method is a way to improve structural performance due to earthquake loads in terms of ease of implementation, time and cost when compared to replacing or adding new structural components. The purpose of this study was to analyze the strengthening of Hbeam column steel plate due to seismic loads. Parameters analyzed were vibration period, lateral displacement and internal forces due to earthquake loads. This research is a quantitative analytical research, where the geometry data of the 3D frame portal structure is determined independently, while the material and loading data are based on (SNI 1727:2013) and (SNI 1729:2019). The 3D frame portal is modeled and analyzed using finite element based software, ETABS software. The results of the analysis show that the strengthening of the Hbeam column by adding a steel plate to the existing Hbeam column which is installed horizontally in the middle of the cross section with dimensions of 15 mm thick and 145 mm long (18.59% of the cross-sectional area of the Hbeam column) increases the stiffness of the structure by 12.01% and 14.2% respectively - for vibration period and lateral drift, respectively. The lateral displacement is smaller than the allowable lateral displacement with a drift ratio of less than 130%, so the structure does not experience a soft story. The average maximum internal forces (moment, shear and axial force) due to the earthquake load of the column structure with reinforcement increased by 12.50%, 9.68% and 14.01% respectively compared to the structure without strengthening along with the addition of dimensions to the existing Hbeam column.
Analisis Perilaku Balok Beton Bertulang dengan Perkuatan Fiber Reinforced Polymer (FRP) Berdasarkan Variasi Tinggi Silvi, Ni Putu; Laintarawan, I Putu
Jurnal Ilmiah Rekayasa Sipil Vol 22 No 1 (2025): April 2025
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jirs.v22i1.1730

Abstract

Structural failure due to structural design that does not meet the minimum standards according to SNI results in structural failure, one of which is cracks. One of the popular strengthening for reinforced concrete beams is using FRP (Fiber Reinforced Polymer). This is because FRP has the advantages of being lightweight, easy to install, corrosion resistant and does not interfere with the function of the structure. The purpose of this study was to determine the behavior of strengthening reinforced concrete beam structures using FRP with variations in FRP strengthening height against reinforced concrete beams without strengthening. The method used in this study is a quantitative method using FRP height variation data which is modeled and analyzed using the finite element method. Modeling and analysis using SAP2000 software assistance with 5 (five) models, namely model 1 is a model without reinforcement, models 2, 3, 4 and 5 with FRP heights of 0.25h, 0.5h, 0.75h and h respectively. The FRP thickness is 5 mm. The loads calculated in the analysis are the ultimate dead and live loads according to SNI 1727: 2020 (SNI Loading) and SNI 2847: 2019 (SNI Concrete). Based on the analysis results, strengthening reinforced concrete beams with FRP can reduce vertical deflection due to the ultimate load by an average of 46.146% compared to beams without strengthening. The ultimate moment of the support and the field of the FRP-strengthened beam can increase the ultimate flexural and shear capacity by an average of 0.242% compared to beams without strengthening. Likewise, the bending stress s11 min and s11 max of the FRP-strengthened beam can increase the average bending stress capacity by 21.65% compared to beams without strengthening. The maximum stress and strain contours decrease as the FRP strengthening height increases.
Rasio Antara Biaya dan Waktu Pekerjaan Pondasi Bore Pile dengan Pondasi Tiang Pancang: (Studi Kasus: Proyek Jembatan di Jalan Gunung Sari Peliatan Kabupaten Gianyar) Wardana, Made Kusuma; Sri Mahapatni, Ida Ayu Putu; Laintarawan, I Putu
Jurnal Ilmiah Kurva Teknik Vol. 14 No. 1 (2025): Jurnal Ilmiah Kurva Teknik
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Mahasaraswati Denpasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36733/jikt.v14i1.11532

Abstract

Jembatan merupakan salah satu sarana transportasi yang sangat penting dalam mendukung mobilitas manusia dan distribusi barang. Dalam perencanaan konstruksi jembatan, pemilihan metode pondasi memiliki peran yang sangat krusial, terutama jika kondisi lahan di lokasi proyek berkontur serta akses menuju lokasi terbatas. Pemilihan metode pondasi yang tepat tidak hanya memengaruhi stabilitas struktur, tetapi juga efisiensi biaya dan waktu pelaksanaan pekerjaan struktur bawah. Oleh karena itu, penting untuk mengetahui dan membandingkan kebutuhan biaya serta durasi waktu dari masing-masing jenis pondasi. Penelitian ini bertujuan untuk mengetahui perbandingan biaya dan waktu pelaksanaan pekerjaan antara pondasi bore pile dan pondasi tiang pancang. Jenis penelitian yang digunakan adalah kuantitatif, dengan data sekunder seperti gambar kerja, volume pekerjaan, RAB proyek, dan jadwal pelaksanaan (time schedule) untuk metode bore pile. Sementara itu, untuk metode tiang pancang, data diperoleh dari hasil wawancara dengan konsultan perencana serta informasi terkait harga dan produktivitas alat excavator drop hammer dari subkontraktor. Berdasarkan hasil analisis, biaya pondasi bore pile tercatat sebesar Rp540.686.616,00 dengan waktu pelaksanaan 42 hari. Adapun biaya pondasi tiang pancang mencapai Rp686.318.566,00 dengan waktu pelaksanaan 50 hari, maka biaya pondasi bore pile setara dengan 78,77% dari total biaya pondasi tiang pancang. Jadi selisih persentase sebesar 21,23%, yang menunjukkan bahwa pondasi bore pile lebih efisien sebesar Rp 145.631.950,00. dibandingkan dengan pondasi tiang pancang, Sedangkan waktu yang dibutuhkan untuk mengerjakan pondasi bore pile setara dengan 84% dari total waktu yang dibutuhkan dalam pengerjaan pondasi tiang pancang. Artinya dapat selisih sebesar 11% yang menunjukkan bahwa pelaksanaan pondasi bore pile lebih cepat lagi 8 hari dibandingkan dengan pondasi tiang pancang.
PELATIHAN PEMBUATAN PAVING BETON DARI LIMBAH PEMBAKARAN GENTENG DI DESA PEJATEN, KEDIRI KABUPATEN TABANAN Widnyana, I Nyoman Suta; Artana, I Wayan; Laintarawan, I Putu; Indriani, Made Novia
JURNAL SEWAKA BHAKTI Vol 11 No 2 (2025): Sewaka Bhakti
Publisher : UNHI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32795/t4k4tm41

Abstract

Genteng is a craft made of clay that is shaped and fired to be used as a roof covering building material. One of the craftsmen of genteng made from clay is in Bali, namely in Tabanan Regency, Kediri District, Pejaten Village. The genteng industrial center in Pejaten Village produces 10,000 pieces of genteng per day and employs around 10 workers. The problem that occurs is the waste from burning genteng which can pollute the environment and have a negative impact on the community around the industry. In this study, waste from burning genteng will be utilized as a mixture for making concrete paving. The method used is a descriptive survey method, namely by surveying, testing concrete paving and socialization. Based on the results of the implementation of community service activities that have been carried out, several things can be concluded, namely: the socialization of making concrete paving is highly appreciated and welcomed enthusiastically by roof tile/brick craftsmen in the traditional village of Pejaten, this is because it can be directly felt and utilized by the craftsmen. This socialization is also very targeted because it is given directly to the craftsmen in the village and is expected to open their insights in managing environmentally friendly waste. This can be seen from the questions asked by the craftsmen there during the socialization. There are two benefits that can be obtained from the socialization of concrete paving, namely: reducing waste from burning and providing benefits for genteng / brick craftsmen in the Pejaten traditional village.
Strategi Penerapan Efektivitas Digital Construction Di Masa Rebound indriani, made novia; Widnyana, I Nyoman Suta; Laintarawan, I Putu
Teras Jurnal : Jurnal Teknik Sipil Vol. 13 No. 2 (2023): Volume 13 Nomor 2, September 2023
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v13i2.934

Abstract

Abstrak Pandemi Covid-19 telah melemahkan berbagai sektor di Indonesia, tidak terkecuali sektor konstruksi. Salah satu sektor yang berkontribusi terhadap perekonomian Indonesia adalah sektor konstruksi. Adapun tujuan tulisan ini yaitu untuk mengetahui dan memahami strategi dalam penerapan digital construction dalam pelaksanaan konstruksi di masa rebound yaitu saat di mana masa pandemi sudah berangsur-angsur membaik. Penelitian ini adalah proyek konstruksi di Provinsi Bali melalui LPSE (layanan pengadaan secara elektonik) dari Maret 2020 s.d Agustus 2021, yaitu sebanyak 31 paket. Pendekatan dilakukan melalui penelitian kuantitatif deskriptif dengan menganalisis faktor internal serta eksternal yang mencakup kekuatan, kelemahan, peluang serta ancaman berdasarkan tahapan analisis SWOT. Pada penerapan digital construction, direkomendasikan untuk menggunakan strategi agresif dalam pelaksanaan konstruksi di masa rebound. Strategi ini menggunakan kekuatan yang ada di kontraktor untuk memanfaatkan peluang, yaitu dengan memaksimalkan anggaran keuangan untuk memfasilitasi penggunaan perangkat, memaksimalkan kualitas SDM dalam pemanfaatan teknologi digitalconstruction, menjaga kepercayaan dari owner serta meningkatkan kerja sama dengan partner kerja maupun pemasok. Kata kunci: Digital construction, eksternal, internal, rebound, SWOT.  Abstract The Covid-19 pandemic has weakened various sectors in Indonesia, including the construction sector. One sector that contributes to the Indonesian economy is the construction sector. The purpose of this paper is to find out and understand the strategy in implementing digital construction in the implementation of construction in the rebound period, which is a time when the pandemic period has gradually improved. The research was conducted in the Province of Bali, whose data was collected through the LPSE (electronic procurement service) from March 2020 to August 2021, which consisted of 31 packages. The approach is carried out through descriptive quantitative research by analyzing internal and external factors that include strengths, weaknesses, opportunities and threats based on the SWOT analysis stages. In the application of digital construction, it is recommended to use an aggressive strategy in the implementation of construction in the rebound period. This strategy uses the strengths that exist in contractors to take advantage of opportunities, namely by maximizing financial budgets to facilitate the use of software, maximizing the quality of human resources in the use of digital construction technology, maintaining trust from owners and increasing collaboration with work partners and suppliers. Keywords: Digital construction, external, internal, rebound, SWOT
Co-Authors I Ketut Sudarsana I Nyoman Suta Widnyana I Wayan Artana I Wayan Artana, I Wayan Ida Ayu Putu Sri Mahapatni Made Novia Indriani Made Sukrawa Silvi, Ni Putu Sri Mahapatni, Ida Ayu Putu Wardana, Made Kusuma