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  • 1
    Online Resource
    Online Resource
    Optimum seismic performance estimation of integrated multiple steel pipes bridge pier connected by shear panel damper with ANN method
    EDP Sciences ; 2019
    In:  MATEC Web of Conferences Vol. 258 ( 2019), p. 02011-
    Details
    In: MATEC Web of Conferences, EDP Sciences, Vol. 258 ( 2019), p. 02011-
    Abstract: This paper discusses the optimum seismic performance estimation analysis of the integrated multiple steel pipes bridge pier connected by shear panel damper (SPD). The optimization result to be expected to result in an easier structural design for the practical engineer. In this study, 405 different structural configurations with 35 and more variations of SPD thickness to be analyzed by non-linear static cyclic in order to quantify its energy dissipation. The optimum energy dissipation to be assumed as analogous with best objective seismic perfor- mance in order avoiding time consumption of numerical analysis. Furthermore, the SPD’s thickness related optimum energy dissipation of each structural configuration was successfully predicted by multi-parameter es- timation analysis with the artificial neural network (ANN) method. As the result, the R -value and the average error value of the estimated optimum SPD’s thickness compared with analytical result were 0.988 and 2.38%, respectively. With the estimated empirical equation result, the practical engineer could determine the structural configuration in the optimum seismic performance easily.
    Type of Medium: Online Resource
    ISSN: 2261-236X
    URL: Article
    DOI: 10.1051/matecconf/201925802011
    Language: English
    Publisher: EDP Sciences
    Publication Date: 2019
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  • 2
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    Agency cost estimation on flexible and rigid pavement
    EDP Sciences ; 2019
    In:  MATEC Web of Conferences Vol. 258 ( 2019), p. 02020-
    Details
    In: MATEC Web of Conferences, EDP Sciences, Vol. 258 ( 2019), p. 02020-
    Abstract: Flexible pavement is a road pavement type which is commonly used, however rigid pavement is also widely used now days in Indonesia. It has even been used for local roads (managed by local authority), which take in heavy vehicle loads. This rigid pavement is used because it has longer service life and higher durability. The need for a durable road resulted in higher construction costs, whereas the budget for local road design and construction is often limited. This study aims to evaluate the agency costs that must be incurred for flexible and rigid pavement construction. Two alternatives of design life are simulated for each type of pavement, namely design lives of 10+10 year and 20 year for flexible pavement and design lives of 20+20 year and 40 year for rigid pavement. The agency costs of those alternatives are analysed using Life Cycle Cost Analysis (LCCA) program-RealCost 2.5. The results show agency costs for alternative flexible pavement 1 (design life of 10y + 10y) and alternative 2 (design life of 20 y) are $ 1,421,930 and $ 1,061,680 respectively. Furthermore for the rigid pavement, the agency cost for alternative 1 (design life 20y + 20 y) and alternative 2 (design life 40 y) is $. 443,990 and $. 350,870 respectively.
    Type of Medium: Online Resource
    ISSN: 2261-236X
    URL: Article
    DOI: 10.1051/matecconf/201925802020
    Language: English
    Publisher: EDP Sciences
    Publication Date: 2019
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  • 3
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    Online Resource
    Seismic Performance Evaluation of a Multistory RC Building in Padang City
    EDP Sciences ; 2019
    In:  MATEC Web of Conferences Vol. 258 ( 2019), p. 03018-
    Details
    In: MATEC Web of Conferences, EDP Sciences, Vol. 258 ( 2019), p. 03018-
    Abstract: Since a long time ago, Padang City has been recognized as one in most-earthquake and tsunami prone city in the world. The successive significant earthquakes that have struck western coast of Sumatra Island from 2004 to 2010 seems to warn the city about its prone condition. The last major Padang-Pariaman earthquake on September 30, 2009, for instance, has caused hundreds of death and lousy damage to thousands of houses and buildings in city. Recently, several new multistory reinforced concrete (RC) buildings have been established in this area. Its include such buildings as government office, mosques, hotels, school and university. The city government plans to use these buildings as vertical evacuation facilities if an earthquake followed by a tsunami hit the city in the near-future. As a consequence, of course, these infrastructures should be well designed and constructed to resist the future earthquakes motion. This paper discusses an evaluation of the seismic performance of an existing multistory RC building in Padang city. The building was a ten-story of hotel RC building located near the coastline of Padang city. A series Pushover and Time History Analyses were conducted to examine the seismic performance of the target R/C building. It uses STructural Earthquake Response Analysis (STERA-3D), a computer software based on the nonlinear finite element method. The Pushover analysis was conducted for maximum drift ratio 1/200 in X and Y directions, respectively. The input ground motion in a maximum acceleration of about 400 gals and 600 gals for 60 seconds’ excitation were used for the Time History Analysis. These input ground motions were generated from the recorded ground motion of 2009 Padang-Pariaman earthquake. The result of the analyses suggest that the current target multistory RC building has outstanding seismic performance. The result is based on the level of damage of the structural components, base shear, inter-story drift, lateral displacement, dynamic responses and the seismic capacity spectrum of the analytical model.
    Type of Medium: Online Resource
    ISSN: 2261-236X
    URL: Article
    DOI: 10.1051/matecconf/201925803018
    Language: English
    Publisher: EDP Sciences
    Publication Date: 2019
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  • 4
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    Online Resource
    Behavior of earthquake-resistant structure elements using polypropylene fiber and high strength reinforcing bars
    EDP Sciences ; 2019
    In:  MATEC Web of Conferences Vol. 258 ( 2019), p. 05007-
    Details
    In: MATEC Web of Conferences, EDP Sciences, Vol. 258 ( 2019), p. 05007-
    Abstract: The use of high strength reinforcing bars has becoming an interesting and cost-efficient option in construction industry recently. However, their use is limited due to their low deformability which might induce a brittle collapse in the structures. Also, longer development length is needed to transfer stress from reinforcing bars to the surrounding concrete. This paper focuses on investigating the influence of fibrous concrete and high-strength reinforcing bars on the behavior of structural elements. Five half-scaled specimens of interior joints using plain or fibrous concrete, reinforced with conventional 420 MPa or high strength reinforcing bar of 520 Mpa were experimentally tested. The two specimens of plain concrete, reinforced longitudinally with 16 mm and 19 mm reinforcing bars are defined as control specimens. The other test specimens were casted with Polypropylene fiber reinforced concrete (PFRC) with 16 mm and 19 mm longitudinal reinforcing bar. Loading protocol of all test specimens is defined according to ACI 374.2. The structure behavior, such as dissipated energy, bond between reinforcing bars and surrounding concrete, and stiffness degradation of the four specimens were evaluated and compared. The results obtained shows that the use of fiber increase the dissipated energy up to 27.5 % compared to specimens with plain concrete. Moreover, the peak strength of PFRC specimens was slightly increased (3% - 7%) compared to that of specimens with plain concrete. Moreover, there is an increase in peak-to-peak stiffness at elastic range loading with the addition of fiber, while no significant difference after the yields of longitudinal reinforcing bars.
    Type of Medium: Online Resource
    ISSN: 2261-236X
    URL: Article
    DOI: 10.1051/matecconf/201925805007
    Language: English
    Publisher: EDP Sciences
    Publication Date: 2019
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  • 5
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    Online Resource
    The effect of density and height of vegetation in open channel on the Manning’s coefficient
    EDP Sciences ; 2019
    In:  MATEC Web of Conferences Vol. 258 ( 2019), p. 01002-
    Details
    In: MATEC Web of Conferences, EDP Sciences, Vol. 258 ( 2019), p. 01002-
    Abstract: One of an important parameter to study water flow in channel is Manning’s coefficient (n). This coefficient is produced not only from material forming the channel, but also due to presence of vegetation in channel. The aim of research is to study the effect of vegetation density and height on Coefficient of Manning in open channel. The study was conducted in open channel with 15.5 m long, 0.5 m wide and 1.0 m high. At the center of 3 m long of channel is planted with Sweet flag (Acorus calamus). The impact of various densities and heights of sweet flag were examined using fixed discharge to measure velocity and slope energy. Coefficient of Manning was obtained using Manning’s equation. Statistical analysis of variance with significance level of 0.05 was adopted to evaluate the effect of variables. The result showed that increasing density and height of Sweet flag make decreasing velocity and increasing Coefficient of Manning to be 0,043-0,064, or 1.40-2.10 times compared to un-vegetated channel (n o =0.031). Based on statistical analysis, it is found that F calc =15.646 and 16.928 for vegetation density and height respectively, which is larger than F Stat =2,603. It can be concluded that density and height of vegetation significantly influence on Coefficient of Manning.
    Type of Medium: Online Resource
    ISSN: 2261-236X
    URL: Article
    DOI: 10.1051/matecconf/201925801002
    Language: English
    Publisher: EDP Sciences
    Publication Date: 2019
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  • 6
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    Online Resource
    The Influence of Rice Husk on the Physical Properties of Portland Pozzoland Cement at the Cement Industry Scale
    EDP Sciences ; 2019
    In:  MATEC Web of Conferences Vol. 258 ( 2019), p. 01005-
    Details
    In: MATEC Web of Conferences, EDP Sciences, Vol. 258 ( 2019), p. 01005-
    Abstract: This study aims to determine the effect of rice husk as a source of substitute fuel on the manufacture of cement at the industry scale. The parameters tested include the physical properties of the cement consisting of the Blain fineness test, false set, cement setting time, and mortar compressive strength at 3, 7, and 28 days. The average values for the results of these tests on cement produced using rice husks as a substitute fuel were 380 m 2 /kg, 81%, 132 minutes, 253 minutes, and 225, 298, and 379 kg/cm 2 , respectively. Based on the test results, we have shown that rice husk ash has a good effect on the characteristics of cement type I which still meet the standards of SNI-2049-2015.
    Type of Medium: Online Resource
    ISSN: 2261-236X
    URL: Article
    DOI: 10.1051/matecconf/201925801005
    Language: English
    Publisher: EDP Sciences
    Publication Date: 2019
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  • 7
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    The influence of the usage of Idpe plastic waste as fine aggregate in light concrete bricks
    EDP Sciences ; 2019
    In:  MATEC Web of Conferences Vol. 258 ( 2019), p. 01006-
    Details
    In: MATEC Web of Conferences, EDP Sciences, Vol. 258 ( 2019), p. 01006-
    Abstract: It has been a long time that red bricks become the raw material for wall compilers. As the era develops, the bricks that are light, easy to compile and not time-consuming in manufacturing are invented. The composition materials for the building blocks are cement, sand and water. In this study, the use of sand in the bricks is reduced with LDPE plastic pellets. The reason for the use of LDPE plastic pellets as substitution of plastic materials is that LDPE plastic pellets have smaller density than sand does, so that it is expected that the brick becomes lighter although consists of the same composition and it can also reduce environmental problems as LDPE plastic waste is difficult to be decomposed by nature but gradually produced by humans that results in excessive waste The LDPE plastic pellets utilized are used LDPE plastics that are recycled into plastic pellets. The sample in this study consists of cylinder with diameter of 15 cm and height of 30 cm as sample of trial mixes test, concrete bricks with size of 40 cm x 20 cm x 10 cm, cube with size of 5 cm x 5 cm x 5 cm and briquette. The trial mixes samples will be treated for 7 days and the brick, cube and briquette samples will be treated for 28 days prior to testing. Furthermore, the sample will be tested with visual, content weight, absorption, compressive strength and drag strength tests. The data analysis uses SNI 03-0349-1989 reference on Concrete Bricks as The Matching Composition for Walls. This study used a mixture of cement, sand and water with ratio of 1: 6: 0.24, this composition was obtained from experiments on several specified compositions. The composition of substitute of plastic pellets used is 20% to the sand, the composition of this substitution is obtained from the experiments on several specified compositions. From the visual appearance, the content weight and absorption, both of normal brick and 20% LDPE pellets are included in the quality I, while the compressive strength test against the sample of normal brick results in quality I and 20% LDPE pellets brick results in quality III.
    Type of Medium: Online Resource
    ISSN: 2261-236X
    URL: Article
    DOI: 10.1051/matecconf/201925801006
    Language: English
    Publisher: EDP Sciences
    Publication Date: 2019
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  • 8
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    Online Resource
    Finite element analysis and parametric study of EWECS composite columns with double H-shaped steel
    EDP Sciences ; 2019
    In:  MATEC Web of Conferences Vol. 258 ( 2019), p. 05018-
    Details
    In: MATEC Web of Conferences, EDP Sciences, Vol. 258 ( 2019), p. 05018-
    Abstract: The behavior of composite column that consists of an exterior wood panel with concrete encased steel (CES) core, hereafter referred to as Engineering Wood Encased Concrete-Steel (EWECS) composite columns, is investigated. Nonlinear analysis is done by using finite element software, ANSYS APDL, to study the seismic performance of the columns. Verification of the finite element modeling is done by comparing and corresponding experimental result that reported by one of the authors, then it is used as a reference for parametric study. The parameters in the parametric study are the use of fiber reinforced concrete (FRC), the use of Indonesian wood and the use of friction element. The results are presented in the form of hysteresis characteristics, failure mode, and principal stress distribution. It is demonstrated that the seismic performance of the EWECS composite columns can be accurately predicted by proposing finite element modeling. Obtained results from the parametric study show that various FRC, different wood, and the contact element influences the hysteresis loops and behavior of the columns. The flexural capacity of the columns is improved about 7-17% by adding steel fiber. In addition, the typical Indonesian wood (Matoa) enhances the flexural strength about 3.3%. Moreover, the use of a friction element affects the seismic behavior significantly.
    Type of Medium: Online Resource
    ISSN: 2261-236X
    URL: Article
    DOI: 10.1051/matecconf/201925805018
    Language: English
    Publisher: EDP Sciences
    Publication Date: 2019
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  • 9
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    The pull-out test on knit bamboo reinforcement embedded into concrete beam
    EDP Sciences ; 2019
    In:  MATEC Web of Conferences Vol. 258 ( 2019), p. 01007-
    Details
    In: MATEC Web of Conferences, EDP Sciences, Vol. 258 ( 2019), p. 01007-
    Abstract: The pull-out test is generally conducted to obtain accurately the carrying capacity of the flexural strength of the knit bamboo reinforced concrete beam, which is more determined by the bonding strength than the tensile strength of reinforcement in concrete. Bamboo bar with braid knit which was coated with sikadur as bonding agent based on selected epoxy resin was expected to improve a good friction with concrete. In the pull-out test method, a hydraulic jack was applied to encourage bamboo embedded into a pair of concrete blocks, whose size was 15cm x 30cm x 40cm. The experimental variable of specimens were types of knitted bamboo, and type of coating. Based on the test results, either the bond strength or the tensile strength, which was calculated based on the failure mechanism, increased with respect to the concrete quality. The compressive strength of concrete was averaged as much as 25,97 MPa. The usage of outer skin surface on the cutting braid knit bamboo (type 1), which was coated with sikadur experimentally could increase the pull-out load. In the pull-out test, bond failure occurred with using of the plain bamboo bar with the bond stress of 1.18 MPa, while tensile failure occurred with using of knit bar type 1 with peak tensile strength of 85.84 Mpa.
    Type of Medium: Online Resource
    ISSN: 2261-236X
    URL: Article
    DOI: 10.1051/matecconf/201925801007
    Language: English
    Publisher: EDP Sciences
    Publication Date: 2019
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  • 10
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    The sustainability of public transport operation based on financial point of view
    EDP Sciences ; 2019
    In:  MATEC Web of Conferences Vol. 258 ( 2019), p. 01008-
    Details
    In: MATEC Web of Conferences, EDP Sciences, Vol. 258 ( 2019), p. 01008-
    Abstract: One of the keys to be successful in transport modeling is indicated by how large the transfence of private users to public transports. The public transport role to solve the problem of traffic jam in urban areas is indisputable. It is undeniable that public transport is a very efficient mode in using road space. For that reason, the sustainability of public transport becomes a necessity that must be achieved. When there is no possible way to minimize the operating cost, the only way is by raising the revenue. The revenue really depends on the number of passengers and not by raising fare, as the fare has been set by the government. This paper attempts to analyze the financial resilience on public transport in Surakarta City i.e. Batik Solo Trans (BST) based on the data of users demand on public transport. This study found that the total of real passengers per year was very few that there were only 87, 908 passengers and the financial loss related to the BST operation was Rp. 291,302,006.00 per year. If it happens continuesly, the sustainability is difficult to maintain, unless the Surakarta Municipal Government is willing to cover the loss. The operation of BST will reach break even point if the number of passengers reach 161,056 people per year.
    Type of Medium: Online Resource
    ISSN: 2261-236X
    URL: Article
    DOI: 10.1051/matecconf/201925801008
    Language: English
    Publisher: EDP Sciences
    Publication Date: 2019
    detail.hit.zdb_id: 2673602-0
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