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PEMS-on board and E3 Modeling: A Comparison between Real-World Measurement and Emissions Estimates from Construction Equipment 船上pems和E3建模:实际测量和建筑设备排放估算之间的比较
Pub Date : 2019-10-18 DOI: 10.9744/ced.21.2.59-65
A. Hajji, A. Larasati, M. P. Lewis, H. Yue
Vehicles in construction industry are typically powered by diesel engines and are considered to be an off-road source of air pollution. Air pollutant emissions include nitrogen oxides (NOx), particulate matter (PM), hydrocarbons (HC), and carbon monoxide (CO). Any engine that combusts a nonrenewable carbonaceous fuel will have net emissions of carbon dioxide (CO2). Economic-Energy-Environmental (E3) model, a statistical-modeled tool, is developed by combining a multiple linear regression (MLR) approach for modeling equipment productivity with the emissions calculation algorithm from Environment Protection Agency (EPA)’s NONROAD model. This paper compares emissions data between the field data to E3 model outputs, and  determines the similarity of the two sources of fuel use data. It is expected the two data are not narrowly similar since the field data are for individual vehicles, while E3 results are based on NONROAD model, which was intended to estimate average fuel use for a fleet of Heavy-Duty Diesel (HDD) equipment.
建筑行业的车辆通常由柴油发动机驱动,被认为是一种非公路空气污染源。空气污染物排放包括氮氧化物(NOx)、颗粒物(PM)、碳氢化合物(HC)和一氧化碳(CO)。任何燃烧不可再生的含碳燃料的发动机都会产生二氧化碳的净排放。经济-能源-环境(E3)模型是一种统计建模工具,它将用于设备生产率建模的多元线性回归(MLR)方法与环境保护署(EPA) NONROAD模型的排放计算算法相结合而开发。本文将现场数据与E3模型输出的排放数据进行了比较,确定了两种来源的燃料使用数据的相似性。由于现场数据是针对单个车辆的,因此预计这两个数据不会有太大的相似之处,而E3的结果是基于NONROAD模型,该模型旨在估计重型柴油(HDD)设备车队的平均燃料使用量。
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引用次数: 0
Impact of Earthquakes on the Transportation Infrastructure of Indonesia: A Preliminary Study 地震对印尼交通基础设施影响的初步研究
Pub Date : 2019-03-28 DOI: 10.9744/CED.21.1.19-28
A. Amirsardari, M. Sofi, E. Lumantarna, I. Imran, C. Duffield
Indonesia is a high seismic region and one of the most vulnerable countries prone to experiencing damaging earthquakes. It is critical that lifeline infrastructure remain operational or is quickly remediated after an earthquake to minimise physical, social, and economical losses. Not much work has been carried out in understanding the effect of earthquakes on transportation infrastructure systems. This study aims to gain a better understanding of the impact of earthquakes on the transportation infrastructure in Indonesia. This is achieved by firstly reviewing the frameworks and tools for conducting seismic risk assessment of lifeline infrastructure. The critical components of the transportation system are then identified. Various forms of transportation infrastructure damage caused by earthquakes are discussed. An overview of the damaging earthquakes for the past 20 years is presented. Finally, conclusions and recommendations are provided about the future work required for conducting risk assessment of the transportation infrastructure in Indonesia
印度尼西亚是一个高地震区,也是最容易发生破坏性地震的国家之一。至关重要的是,生命线基础设施在地震后保持运行或迅速修复,以最大限度地减少物理、社会和经济损失。在了解地震对交通基础设施系统的影响方面,没有做太多的工作。本研究旨在更好地了解地震对印尼交通基础设施的影响。这是通过首先审查生命线基础设施地震风险评估的框架和工具来实现的。然后识别运输系统的关键部件。讨论了地震对交通基础设施造成的各种形式的破坏。介绍了近20年来破坏性地震的概况。最后,就印度尼西亚交通基础设施风险评估所需的未来工作提出了结论和建议
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引用次数: 4
Eco Drainage System for Surface Runoff Reduction in Indonesia 印尼减少地表径流的生态排水系统
Pub Date : 2019-03-28 DOI: 10.9744/CED.21.1.29-35
C. Kusumastuti, H. Chandra, Kristanto Wibisono, Antonius Christoper Hartono
Sustainable urban drainage systems (SUDS) or eco-drainage system has been implemented in developed countries. The aims of the construction of the system are: to minimize surface runoff by capturing and temporarily retain it, to improve the quality of surface runoff, to infiltrate stormwater, to increase evapotranspiration, and to enhance landscape aesthetic value. Learning from the success of the implementation of SUDS in developed countries, the paper presents a model of eco-drainage system for residential area in Indonesia, which consists of rainwater harvesting system (RWHS) and retention ponds. A simulation of stormwater and surface runoff utilization is also presented. At 14,602.26 m2 bare land in Mojokerto Regency, East Java, which is transformed into residential area, the model of eco-drainage system could reduce surface runoff volume almost by 70%. It is recommended to adjust the dimension of rainwater storage tank and retention ponds in order to reduce more surface runoff volume.
可持续城市排水系统(SUDS)或生态排水系统已在发达国家实施。该系统的建设目标是:通过捕获和临时保留地表径流来最大限度地减少地表径流,提高地表径流的质量,渗透雨水,增加蒸散量,提高景观美学价值。借鉴发达国家实施SUDS的成功经验,提出了一种由雨水收集系统(RWHS)和滞留池组成的印尼居民区生态排水系统模型。还对雨水和地表径流的利用进行了模拟。东爪哇Mojokerto Regency的14602.26 m2裸露土地被改造为住宅区,生态排水系统的模式可以减少近70%的地表径流量。建议调整雨水储罐和蓄水池的尺寸,以减少更多的地表径流量。
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引用次数: 2
Performance Evaluation of Hot Mixture Asphalt Using Concentrated Rubber Latex, Rubber Compound and Synthetic Polymer as Modifier 以浓胶乳、橡胶胶料和合成聚合物为改性剂的热混合沥青性能评价
Pub Date : 2019-03-28 DOI: 10.9744/CED.21.1.36-42
N. Suaryana, Tedi Santo Sofyan
Research on the utilization of natural rubber for Hot Mixture Asphalt as modifier has been widely carried out, and more intensively since 2016 due to the declining global natural rubber price. Further research conducted is the utilization of pre-vulcanized concentrated rubber latex and rubber compound added with antioxidants and treated through vulcanization process. This study experimentally evaluates the performance of Asphalt Concrete Wearing Course (ACWC) using natural rubber and synthetic polymer as modifier, compared to ACWC without modifier (only petroleum asphalt).  The results show that the rubberized asphalt has higher index penetration value as well as higher elasticity compared to petroleum asphalt penetration grade 60, but lower than synthetic polymer modified asphalt. Similarly, the level of performance of rubberized asphalt mixtures, particularly resilient modulus, water resistance, deformation, and fatigue cracking, is between that of petroleum asphalt and synthetic polymer modified asphalt
由于全球天然橡胶价格的下降,2016年以来,热混合沥青用天然橡胶作为改性剂的研究得到了广泛开展,并且更加深入。进一步的研究是利用预硫化浓缩胶乳和掺加抗氧剂的胶料进行硫化处理。本研究对以天然橡胶和合成聚合物为改性剂的沥青混凝土耐磨层(ACWC)与不含改性剂的ACWC(仅含石油沥青)的性能进行了实验评价。结果表明:橡胶改性沥青的指标渗透值高于石油沥青的60级渗透值,弹性也高于石油沥青,但低于合成聚合物改性沥青。同样,橡胶沥青混合料的性能水平,特别是弹性模量、耐水性、变形和疲劳开裂,介于石油沥青和合成聚合物改性沥青之间
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引用次数: 4
Characteristics of PVC Coated Welded Wire Mesh Fiber Reinforced Concrete PVC包覆钢丝网纤维增强混凝土的特性
Pub Date : 2019-03-28 DOI: 10.9744/CED.21.1.50-56
Indradi Wijatmiko, A. Wibowo, C. Nainggolan
Introducing fibers into concrete aims to improve the low tensile strength of concrete and its brittle properties. In this research, readily available PVC coated welded wire mesh with diameter of 1 mm was used as fibers in concrete. There are several variations of concrete samples prepared for this study, i.e. based on the fiber’s volume fraction, length and interlocking schemes. Concrete samples were subjected to tensile and compressive strength, and elastic modulus tests. The results show that the incorporation of PVC coated welded wire mesh slightly increases the tensile strength of concrete, with the optimum fiber volume fraction of 1.5%; with the fiber length of 3.6 cm, and with the interlocking of 1.2 cm. However, the concrete compressive strength is slightly reduced, compared to the normal ones. The presence of PVC coated welded wire mesh as fiber also tends to reduce the elastic modulus of fiber reinforced concrete.
在混凝土中引入纤维是为了改善混凝土的低抗拉强度和脆性。在本研究中,使用现成的直径为1mm的PVC涂层焊接钢丝网作为混凝土纤维。为本研究准备的混凝土样品有几种变化,即基于纤维的体积分数,长度和联锁方案。混凝土试样进行了抗拉、抗压强度和弹性模量试验。结果表明:掺加PVC包覆焊丝网对混凝土抗拉强度略有提高,纤维体积分数为1.5%时效果最佳;光纤长度3.6 cm,联锁长度1.2 cm。但与普通混凝土相比,混凝土抗压强度略有降低。作为纤维的PVC涂层焊接网的存在也倾向于降低纤维增强混凝土的弹性模量。
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引用次数: 1
Proposed Design Philosophy for Seismic-Resistant Buildings 抗震建筑的设计理念建议
Pub Date : 2019-03-01 DOI: 10.9744/CED.21.1.1-5
Nanang Gunawan, A. Han, B. Gan
Modern seismic design and technologies have undergone tremendous developments. In modern design codes, building structures subjected to high earthquake loads are allowed to experience plastic deformations without collapsing, and the design is permitted up to the ultimate strength. According to comparative results in Japan, the number of humans injured due to earthquakes is higher than the number of deaths/missing. Likewise, the number of residential buildings that collapsed are less than the partially damaged buildings. This outcome implies that residential buildings designed based on the revised seismic standards have good earthquake resistances. It also infers that the human deaths/injury casualties were not a result of the collapsed the structure, but due to the strong vibrations originated from the earthquake, yielding in the collapse of non-structural elements such as ceilings and bookshelves. This paper presents a proposed design philosophy that attempts to implement the effect of earthquakes to non-fatal human casualties
现代抗震设计和技术有了巨大的发展。在现代设计规范中,建筑结构在高地震荷载下允许经历塑性变形而不倒塌,并且设计允许达到极限强度。根据日本的比较结果,地震造成的受伤人数高于死亡/失踪人数。同样,倒塌的住宅楼也比部分受损的住宅楼少。这一结果表明,根据修订后的抗震标准设计的住宅具有良好的抗震性能。它还推断,人员伤亡不是由于结构倒塌,而是由于地震引起的强烈振动导致天花板和书架等非结构部件倒塌。本文提出了一种设计理念,试图实现地震对非致命人员伤亡的影响
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引用次数: 5
The Correlation between Penetration Pressure Required to Install Pile Foundation and to Insert Bi-cones in Cone Penetration Test 桩入试验中桩基础插入压力与双锥插入压力的关系
Pub Date : 2019-03-01 DOI: 10.9744/CED.21.1.13-18
G. S. Budi, Alvin Gilbert Tandiputra, Haven Kusuma Markho
One of the common methods used to install pile foundation is hydraulic jacked-in machine. In this method, a pile is pushed down into the ground up to the predetermined depth. The method has similar principle to that of Cone Penetration Test (CPT). This paper presents the correlation between the mobilize pressure required to install pile foundations and that required to push the bi-cones that attached at the tip of CPT rod. The results show that the penetration pressure required to install the pile into very soft clay layer is independent of pile diameter. The penetration pressure required to install the pile into soft to stiff clay layers depends on the pile diameter. The larger the diameter of piles, the smaller the penetration pressures required. The penetration pressure required to install the pile into stiff expansive clay layer beyond the depth of active zone can be predicted as high as the pressure calculated form CPT.
桩基安装的常用方法之一是液压顶插机。在这种方法中,一桩被推入地下达到预定的深度。该方法的原理与锥贯入试验(CPT)相似。本文介绍了安装桩基所需的动员压力与CPT杆端双锥推动所需的动员压力之间的关系。结果表明:桩入极软黏土层所需的侵彻压力与桩径无关;将桩插入软、硬粘土层所需的侵彻压力取决于桩径。桩径越大,所需侵彻压力越小。在活动带深度以外的刚性膨胀粘土层中,桩身插入所需的渗透压力可与CPT计算的压力一样高。
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引用次数: 0
Monitoring the Shear Fatigue Response of Reinforced Concrete Beams Subjected to Moving Loads using Digital Image Correlation 利用数字图像相关技术监测移动荷载作用下钢筋混凝土梁的剪切疲劳响应
Pub Date : 2019-03-01 DOI: 10.9744/ced.21.1.6-12
B. Suryanto, George Staniforth
A series of three reinforced concrete beams without shear reinforcement were tested to failure under a centre-span monotonic load, a centre-span pulsating load, and a stepwise-moving pulsating load. During each experiment, load-deflection response was continuously monitored and at several stages during the experiment, the load was briefly stopped for crack observations. In addition to this manual crack mapping, more detailed crack mappings were undertaken using the digital image correlation (DIC) technique, employing the open-source DIC software Ncorr. It was shown that while the three beams exhibited a similar mode of failure (i.e. shear), each beam displayed a rather distinctive overall behaviour, particularly with regard to the load-deflection response and the nature of crack initiation and propagation. Results from the DIC analysis are presented to provide direct evidence on the damage progression during the load cycles and discuss the reduced fatigue life exhibited by the beam subjected to stepwise-moving pulsating load
对三根无抗剪钢筋的钢筋混凝土梁在中心跨单调荷载、中心跨脉动荷载和逐步移动脉动荷载作用下的破坏进行了试验研究。在每次实验中,都会持续监测荷载-挠度响应,在实验的几个阶段,会短暂停止荷载以进行裂纹观察。除了这种手动裂纹映射外,还使用数字图像相关(DIC)技术,使用开源DIC软件Ncorr进行了更详细的裂纹映射。研究表明,虽然三根梁表现出相似的破坏模式(即剪切),但每根梁都表现出相当独特的整体行为,特别是在荷载-挠度响应以及裂纹萌生和扩展的性质方面。DIC分析的结果为载荷循环过程中的损伤进展提供了直接证据,并讨论了梁在逐步移动的脉动载荷下表现出的疲劳寿命缩短
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引用次数: 3
Optimization of resource leveling problem under multiple objective criteria using a symbiotic organisms search 利用共生生物搜索优化多目标条件下的资源均衡问题
Pub Date : 2019-03-01 DOI: 10.9744/CED.21.1.43-49
D. Prayogo, Christianto Tirta Kusuma
Bad scheduling and resource management can cause delays or cost overruns. Optimization in solving resource leveling is necessary to avoid those problems. Several objective criteria are used to solve resource leveling. Each of them has the same objective, which is to reduce the fluctuation of resource demand of the project. This study compares the performance of particle swarm optimization (PSO) and symbiotic organisms search (SOS) in solving resource leveling problems using separate objective functions in order to find which one produces a better solution. The results show that SOS produced a better solution than PSO, and one objective function is better in solving resource leveling than the others.
糟糕的调度和资源管理可能导致延迟或成本超支。为了避免这些问题,优化解决资源均衡是必要的。几个客观标准被用来解决资源均衡问题。它们的目标是一致的,都是为了减少项目资源需求的波动。本研究比较粒子群优化(PSO)和共生生物搜索(SOS)在解决资源均衡问题时的性能,以找出哪一种方法能产生更好的解决方案。结果表明,SOS比PSO产生更好的解,其中一个目标函数在解决资源均衡问题上优于其他目标函数。
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引用次数: 6
Seismic Performance of Existing Building Retrofitted with VSL-Gensui Damper VSL Gensui阻尼器改造后既有建筑的抗震性能
Pub Date : 2018-10-08 DOI: 10.9744/CED.20.2.86-90
P. Pudjisuryadi, B. Lumantarna, Tjhai Ferlinda Hermawan, Teddy Tirta Gunawan
Buildings designed using older code should be checked against the higher demand required by newer code. In this study, performance of Building T of Petra Christian University, Surabaya, Indonesia, which was designed with older Indonesian Seismic Code (PPTGIUG 1983) is investigated. The effectiveness of VSL-Gensui Damper application is also investigated as an effort to enhance the performance of the building. Nonlinear time history analysis was conducted to analyze the building. Spectrum consistent ground acceleration generated from El Centro 18 May 1940 North-South component in accordance to current seismic code was used for analysis. The result shows that the existing building cannot resist the demand specified by current code (SNI 1726:2012) as some frame element failures are detected. The performance is greatly enhanced after installation of VSL-Gensui Dampers. Roof story drift and displacement decreased as much as 9% and 14%, respectively as compared to existing building, and structural element failures were no longer observed.
使用旧规范设计的建筑物应对照新规范所要求的更高要求进行检查。在本研究中,研究了印尼泗水佩特拉基督教大学T楼的性能,该建筑采用较旧的印度尼西亚地震规范(PPTGIUG 1983)进行设计。还研究了vsl -源水阻尼器应用的有效性,以提高建筑物的性能。对该结构进行了非线性时程分析。根据现行的地震规范,使用1940年5月18日El Centro的南北分量产生的光谱一致地面加速度进行分析。结果表明,由于检测到一些框架元件失效,现有建筑无法抵抗当前规范(SNI 1726:2012)规定的要求。安装vsl -源水阻尼器后,性能大大提高。与现有建筑相比,屋顶层漂移和位移分别减少了9%和14%,并且不再观察到结构元件的破坏。
{"title":"Seismic Performance of Existing Building Retrofitted with VSL-Gensui Damper","authors":"P. Pudjisuryadi, B. Lumantarna, Tjhai Ferlinda Hermawan, Teddy Tirta Gunawan","doi":"10.9744/CED.20.2.86-90","DOIUrl":"https://doi.org/10.9744/CED.20.2.86-90","url":null,"abstract":"Buildings designed using older code should be checked against the higher demand required by newer code. In this study, performance of Building T of Petra Christian University, Surabaya, Indonesia, which was designed with older Indonesian Seismic Code (PPTGIUG 1983) is investigated. The effectiveness of VSL-Gensui Damper application is also investigated as an effort to enhance the performance of the building. Nonlinear time history analysis was conducted to analyze the building. Spectrum consistent ground acceleration generated from El Centro 18 May 1940 North-South component in accordance to current seismic code was used for analysis. The result shows that the existing building cannot resist the demand specified by current code (SNI 1726:2012) as some frame element failures are detected. The performance is greatly enhanced after installation of VSL-Gensui Dampers. Roof story drift and displacement decreased as much as 9% and 14%, respectively as compared to existing building, and structural element failures were no longer observed.","PeriodicalId":30107,"journal":{"name":"Civil Engineering Dimension","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45257665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
期刊
Civil Engineering Dimension
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