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All Journal Rekayasa Sipil Civil and Environmental Science Journal (CIVENSE) Jurnal Infomanpro
Krisna Febrian Anugerahputra
Itnmalang
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Engineering Environmental Science Transportation

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Application of Polynomial Rocking Bearings as Seismic Isolation System on Irregular Bridges Anugerahputra, Krisna Febrian; Tzu Ying, Lee; Wibowo, Ari
Civil and Environmental Science Journal (CIVENSE) Vol 1, No 1 (2018)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2018.00101.1

Abstract

Friction Pendulum System (FPS) is one of the conventional sliding isolators which widely used and effectively proved to reduce seismic hazard in far-fault earthquakes. However, it may not be effective when the structures are induced by near-fault earthquakes because the earthquake’s period is usually close to the isolation period. In this study, a Polynomial Rocking Bearing (PRB) which has variable isolation stiffness is used to improve the performance of seismic isolation systems applied on irregular bridges under near-fault earthquakes. The PRB is composed by an articular joint and concave rocking surface. The rocking surface is defined by a sixth-order polynomial function. Based on previous studies, the PRB has been verified to effectively suppress the large isolator displacement subjected to near-fault earthquakes on building and regular bridges. However, it has not been used yet in the irregular bridges. This study aims to analyze the behaviour of Polynomial Rocking Bearing installed on an irregular bridge. As compared with Friction Pendulum Systems (FPS), the performance of PRBs is much better to effectively suppress the displacement of the bridge deck in both near and far-fault earthquakes.
The Effect Of Variation of Pyrophyllite Addition To Compressive Strength, Porosity, And Diagram of Stress Strain In Burnt Lightweight Concrete Brick Ristinah Ristinah; Retno Anggraini; Achfas Zacoeb; Prastumi Prastumi; Krisna Febrian Anugerahputra; I Dewa Nyoman Yoga Prawira
Rekayasa Sipil Vol 7, No 3 (2013)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (391.036 KB)

Abstract

Lightweight brick is a material widely used in civil engineering as a substitute alternative material and brick walls of the building material. The aim of this study is to determine the behavior of burnt light brick, and behavior of piropilit additions in the mix proportion of the light brick. Specimens were tested by compressive strength, porosity, and modulus of elasticity. To test the compressive strength, plates were set at the top and bottom of the test specimen; a dial gauge was used to determine the deformation. To test the porosity, the specimen was cut into a size of 15 x 20 x 10 cm 3 and tested in accordance with porosity testing procedures. Data for the elastic modulus was obtained from stress and strain testing in conjunction with the compressive strength test. After the age of 28 days, specimens undergo combustion process before tested in the laboratory. Results of this study show that the addition of amount of piropilit as filler as much as 10-25% by weight of cement will increase the strength of brick light post-combustion at 800 o C temperature along with the increasing number of additional piropilit in it, however the addition of 5% would reduce the value of compressive strength. The addition of piropilit in the burnt lightweight brick will decrease the value of the strength. Porosity and modulus of elasticity values indicate that the addition of a filler piropilit as much as 515% by weight of cement on the burnt brick would increase the value of its porosity, however the addition of 20% and 25% would reduce the value of porosity. The modulus of elasticity values obtained from the stress and strain diagram, an increase of 5% -25% variation pyrophyllite additions. However there are some fluctuation trends on a variation of 5% -20% due to piropilit characteristics that do not fit to undergo the process of combustion or due to the setting position of the specimen in the furnace when the combustion process which allows the specimen exposed to direct flame or not. 
KEPUTUSAN PRIORITAS PENANGANAN KERUSAKAN JALAN DENGAN PENDEKATAN SIMPLE ADDITIVE WEIGHTING Ma'ruf, Annur; Donny Maynando Gennaryo; Krisna Febrian Anugerahputra
Jurnal Teknik Sipil Info Manpro Vol 14 No 2 (2025): JURNAL INFOMANPRO
Publisher : Pascasarjana Teknik Sipil Institut Teknologi Nasional Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/infomanpro.v14i2.15309

Abstract

Kabupaten Sumba Barat merupakan salah satu daerah di Nusa Tenggara Timur dengan luas wilayah sebesar 737,42 km2 serta jumlah penduduk sebanyak 129.710 jiwa. Kabupaten ini memiliki APBD tahun 2023 sebesar Rp200.954.111.325,- dengan alokasi belanja modal jalan, jaringan dan irigasi sebesar Rp118.423.906.212,- Studi ini bertujuan untuk menentukan prioritas penanganan kerusakan jalan untuk ruas jalan Kabupaten Sumba Barat. Metode pendekatan analisis yang digunakan pada kajian ini adalah Simple Additive Weighting (SAW) dimana metode ini dapat memberikan keputusan prioritas dengan banyak kriteria dari banyak alternatif. Pemilihan alternatif dianalisis berdasarkan bobot kepentingan antar kriteria antar alternatif. Berdasarkan hasil analisis diperoleh bobot masing-masing alternatif pada ruas jalan Weekarou – Sodana sebesar 1,153, ruas jalan Gaura - Rita sebesar 1,131, ruas jalan Sobawawi - Weekarou sebesar 1,120, Ruas jalan Wanukaka – Rua sebesar 1,118, dan ruas jalan Kurutepe - Matakaito sebesar 1,086. Berdasarkan nilai bobot yang diperoleh, maka ruas jalan Weekarou – Sodana merupakan prioritas utama untuk mendapatkan penanganan kerusakan jalan di Kabupaten Sumba Barat.
STUDI KELAYAKAN TEMPAT PEMROSESAN AKHIR (TPA) KABUPATEN SUMBA TENGAH Sriliani Surbakti; vega aditama; Nusa sebayang; Krisna Febrian Anugerahputra
Jurnal Teknik Sipil Info Manpro Vol 15 No 1 (2026): JURNAL INFOMANPRO
Publisher : Pascasarjana Teknik Sipil Institut Teknologi Nasional Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/infomanpro.v15i1.19296

Abstract

Timbulan sampah merupakan indikator penting dalam perencanaan sistem pengelolaan persampahan, karena menentukan besarnya beban yang harus ditangani oleh suatu wilayah. Kabupaten Sumba Tengah saat ini menghadapi permasalahan dalam pengelolaan sampah, dimana sistem yang ada belum berjalan optimal. Pengelolaan persampahan baru dilakukan secara terbatas di Desa Pondok, Kecamatan Umbu Ratu Nggai Barat, dan di Waibaku, Kecamatan Katikutana seluas 5 Ha, sementara di desa lainnya masih menggunakan metode sederhana seperti penimbunan dan pembakaran sampah. Kondisi ini dipengaruhi oleh ketersediaan lahan pekarangan yang luas, namun berpotensi menimbulkan dampak negatif terhadap kualitas lingkungan hidup. Oleh sebab itu diperlukan kajian aspek lingkungan sebagai Tempat Pemrosesan Akhir (TPA) di Desa Pondok. Dengan mempertimbangkan aspek teknis, lingkungan, serta sistem pengelolaan yang tepat. Kajian ini bertujuan untuk merumuskan perencanaan TPA yang memenuhi standar pengelolaan lingkungan melalui pendekatan Upaya Pengelolaan Lingkungan dan Upaya Pemantauan Lingkungan (UKL-UPL), sehingga dapat meminimalkan dampak negatif dan meningkatkan kualitas lingkungan hidup secara berkelanjutan. Hasil kegiatan Studi kelayakan Tempat Pemrosesan Akhir (TPA) yaitu proses analisis untuk menilai lokasi dan rencana pembangunan TPA di Desa Pondok Kecamatan Umbu Ratu Nggai Barat Kabupaten Sumba Tengah layak dilaksanakan, dimana dinilai dari berbagai aspek, yaitu aspek teknis, aspek lingkungan, aspek ekonomi, dan aspek sosial. Hasil dari aspek teknis sudah sesuai dengan lokasi dan desain TPA termasuk didalamnya kondisi tanah, topografi, ketersediaan akses jalan, jarak dari permukiman sudah sesuai sehingga lingkungan masyarakat tidak terganggu, dapat meminimalisasikan polusi pencemaran udara, dan metode pengolahan sampah dilakukan dengn sanitary landfill, dari aspek lingkungan menilai dampak TPA terhadap lingkungan antara lain diminimalisasikan pencemaran air tanah dan air permukaan, tidak terjadi pencemaran udara (bau, gas metana), meminimalkan dampak terhadap flora dan fauna, dari aspek ekonomi dan finansial, yaitu efesiensi pengelolaan sampah jangka Panjang, dari aspek sosial masyarakat bisa menerima, tidak terjadi konflik sosial, dan Aspek kelembagaan dan manajemen yaitu struktur organisasi pengelola TPA sudah ada, ketersediaan sumber daya manusia dan sistem operasional dan pemeliharaanTPA. Dengan adanya studi kelayakan TPA justru dapat menjadi solusi pengelolaan sampah yang aman, efektif, dan ramah lingkungan di Kabupaten Sumba Tengah.
Co-Authors Achfas Zacoeb Ari Wibowo Donny Maynando Gennaryo I Dewa Nyoman Yoga Prawira Ma'ruf, Annur Nusa sebayang Prastumi Prastumi Retno Anggraini Ristinah Ristinah Sriliani Surbakti Tzu Ying, Lee Vega Aditama