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I Putu Laintarawan
Universitas Hindu Indonesia
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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.
Analisis dan Perkuatan Kolom Baja Struktural Akibat Beban Gempa Menggunakan HBeam Ni Putu Silvi; I Putu Laintarawan
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.
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.
Strategi Penerapan Efektivitas Digital Construction Di Masa Rebound made novia indriani; I Nyoman Suta Widnyana; I Putu Laintarawan
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 Ida Ayu Putu Sri Mahapatni Made Novia Indriani Made Sukrawa Ni Putu Silvi