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Model tests of fire smoke control effects in highway tunnels 公路隧道火灾防烟效果模型试验
IF 1.1 4区 工程技术
Gradevinar Pub Date : 2020-10-19 DOI: 10.14256/jce.2671.2019
Jianwei Cheng, Fangyuan Liu, Shi Yu, Congling Shi, Chang Qi, M. Borowski, Yongjun Zhang
{"title":"Model tests of fire smoke control effects in highway tunnels","authors":"Jianwei Cheng, Fangyuan Liu, Shi Yu, Congling Shi, Chang Qi, M. Borowski, Yongjun Zhang","doi":"10.14256/jce.2671.2019","DOIUrl":"https://doi.org/10.14256/jce.2671.2019","url":null,"abstract":"In this work, a typical tunnel 150 m in length is selected and modelled at a scale of 1:15 to assess its effects on smoke control. A total of 32 model tests on smoke flow pattern and longitudinal temperature distribution have been carried out based on the Froude similarity criterion. The results show that smoke control is affected by three factors, namely, the longitudinal airflow velocity, number of opened smoke-exhaust dampers, and fire power, out of which the longitudinal airflow velocity has the greatest effect on smoke control.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66967084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Proposal of response spectra in the second generation of Eurocode EN 1998-1-1 for seismic areas and comparison with the existing standard EN 1998-1: 2004 欧洲规范EN 1998-1-1第二代震区反应谱的建议以及与现有标准EN 1998- 1:20 04的比较
IF 1.1 4区 工程技术
Gradevinar Pub Date : 2020-10-01 DOI: 10.14256/jce.2838.2019
{"title":"Proposal of response spectra in the second generation of Eurocode EN 1998-1-1 for seismic areas and comparison with the existing standard EN 1998-1: 2004","authors":"","doi":"10.14256/jce.2838.2019","DOIUrl":"https://doi.org/10.14256/jce.2838.2019","url":null,"abstract":"Fundamental changes of the existing standard EN 1998-1, with incorporation of latest research results, are proposed in the second generation of Eurocode EN 1998-1-1. A spectrum of earthquake loads, defined by several points established in a probabilistic manner, is presented and commented on. In addition, the new EN 1998-1-1: a) introduces 12 return periods for earthquakes (instead of the previous two periods), b) cancels previous elastic spectra Type 1 and Type 2, c) introduces a new moment magnitude Mw instead of the surface magnitude Ms, d) introduces four limit states instead of the previous two NCR and DLR, etc.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66967314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Geotechnics as an unavoidable segment of earthquake engineering 岩土工程是地震工程中不可缺少的一环
IF 1.1 4区 工程技术
Gradevinar Pub Date : 2020-10-01 DOI: 10.14256/jce.2968.2020
Mario Bačić, T. Ivšić, M. Kovačević
{"title":"Geotechnics as an unavoidable segment of earthquake engineering","authors":"Mario Bačić, T. Ivšić, M. Kovačević","doi":"10.14256/jce.2968.2020","DOIUrl":"https://doi.org/10.14256/jce.2968.2020","url":null,"abstract":"A broader overview of the role of geotechnics in earthquake engineering is given, and a set of practical examples of the quantification of geotechnical seismic indicators for construction of individual buildings is provided. An overview of oncoming changes to the current design standards for evaluating the effect the soil has on buildings in earthquake conditions is also given. Considering the level of seismic activity in Croatia, the need for adopting a comprehensive approach to seismic microzoning is emphasized, which involves a whole array of indicators, from lithological, engineering geological, and hydrogeological properties, and position of active faults, to identification of unstable slopes and zones of pronounced liquefaction potential, for which extensive geophysical and geotechnical investigations are required.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66968501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Railway infrastructure in earthquake affected areas 地震灾区的铁路基础设施
IF 1.1 4区 工程技术
Gradevinar Pub Date : 2020-10-01 DOI: 10.14256/jce.2967.2020
{"title":"Railway infrastructure in earthquake affected areas","authors":"","doi":"10.14256/jce.2967.2020","DOIUrl":"https://doi.org/10.14256/jce.2967.2020","url":null,"abstract":"In the case o seismic impact on rail infrastructure, even small deformations or damage to track structure can compromise safe operation of rail traffic. Damage can affect track substructure or permanent way of the track, but also the electrification system and safety-signalling devices. Ballast prism will suffer damage in case of greater intensity earthquakes, resulting in the reduction of lateral and longitudinal resistance of track structure. Earthquake action may also cause derailment of moving rail vehicles. Operation of rail vehicles also causes certain levels of vibrations, and so an analysis of subsequent effects of rail traffic.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66968365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Zagreb earthquake of 22 March 2020 – preliminary report on seismologic aspects and damage to buildings 2020年3月22日萨格勒布地震-关于地震学方面和建筑物损坏的初步报告
IF 1.1 4区 工程技术
Gradevinar Pub Date : 2020-10-01 DOI: 10.14256/jce.2966.2020
M. Novak, J. Atalić, M. Herak, M. Demšić, M. Baniček, D. Lazarevic, N. Bijelić, M. Crnogorac, M. Todorić
{"title":"Zagreb earthquake of 22 March 2020 – preliminary report on seismologic aspects and damage to buildings","authors":"M. Novak, J. Atalić, M. Herak, M. Demšić, M. Baniček, D. Lazarevic, N. Bijelić, M. Crnogorac, M. Todorić","doi":"10.14256/jce.2966.2020","DOIUrl":"https://doi.org/10.14256/jce.2966.2020","url":null,"abstract":"Significant characteristics and main consequences of the 5.5 magnitude earthquake that struck Zagreb and its surroundings in the midst of the COVID-19 pandemic are presented in the paper. Although, from the seismologic aspect, the earthquake was of moderate magnitude, it caused the loss of one life and considerable material damage. An overview of the situation before the quake is given, and information about the location, seismic activity, and organisation of building inspection activity, is presented. The data on damage are roughly classified, with the focus on historic core of the city and districts situated close to the epicentre. A strong emphasis is placed on indispensable activities that should have been carried out a long time ago, in the hope that they will be prompted by this earthquake.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66968412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Application of steel in refurbishment of earthquake-prone buildings 钢在地震易发建筑改造中的应用
IF 1.1 4区 工程技术
Gradevinar Pub Date : 2020-10-01 DOI: 10.14256/jce.2970.2020
S. Lakušić
{"title":"Application of steel in refurbishment of earthquake-prone buildings","authors":"S. Lakušić","doi":"10.14256/jce.2970.2020","DOIUrl":"https://doi.org/10.14256/jce.2970.2020","url":null,"abstract":"Refurbishment of existing buildings has become an increasingly topical issue in recent years. The recent Zagreb earthquake has also increased public awareness about the issue of sensitivity of old buildings to seismic loads. Steel plays a significant role in all aspects of refurbishment as it offers reliable rehabilitation and retrofitting solutions. The paper provides an overview of refurbishment methods with an emphasis on the assessment procedure for existing buildings, and methods for their seismic retrofitting using steel. Solutions that use new steel elements or improve the properties of existing ones are discussed, and some innovative retrofitting systems are highlighted.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66968551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
How to achieve Nearly zero-energy buildings standard 如何实现近零能耗建筑标准
IF 1.1 4区 工程技术
Gradevinar Pub Date : 2020-09-01 DOI: 10.14256/jce.2923.2020
Bojan Milovanović, M. Bagaric
{"title":"How to achieve Nearly zero-energy buildings standard","authors":"Bojan Milovanović, M. Bagaric","doi":"10.14256/jce.2923.2020","DOIUrl":"https://doi.org/10.14256/jce.2923.2020","url":null,"abstract":"The implementation of the Nearly zero-energy buildings (NZEB) standard has enabled significant developments in the design and realisation of external building envelopes, which have the greatest influence on the quality of buildings in the sense of energy efficiency. Experience has shown that prerequisites for good-quality realisation of works mainly include competent and motivated workforce, appropriate equipment, and good communication between all participants in construction. Basic principles of architectural and civil engineering design and realisation of NZEB projects are presented, and problems occurring and possibly resulting in construction damage are presented in the paper.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66968004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Design of movable frame structures using modified Cross procedure 采用改进的Cross程序设计活动框架结构
IF 1.1 4区 工程技术
Gradevinar Pub Date : 2020-09-01 DOI: 10.14256/jce.1881.2016
{"title":"Design of movable frame structures using modified Cross procedure","authors":"","doi":"10.14256/jce.1881.2016","DOIUrl":"https://doi.org/10.14256/jce.1881.2016","url":null,"abstract":"An original procedure for static design of movable in-plane frame structures is presented in the paper. The presented design procedure was derived using the modified traditional Cross procedure (TCP). The introduction of the TCP modification has resulted in significant improvement of the design algorithm of movable frame structures as compared to TCP, especially as to elimination of the need to conduct greater number of individual iteration procedures, and to solve linear algebraic equation systems.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66964291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Performance based simulation of pervious concrete using discrete element method 基于离散元法的透水混凝土性能模拟
IF 1.1 4区 工程技术
Gradevinar Pub Date : 2020-09-01 DOI: 10.14256/jce.2424.2018
Ashfaque Ansari, Mukund M. Mahajan
{"title":"Performance based simulation of pervious concrete using discrete element method","authors":"Ashfaque Ansari, Mukund M. Mahajan","doi":"10.14256/jce.2424.2018","DOIUrl":"https://doi.org/10.14256/jce.2424.2018","url":null,"abstract":"Pervious concrete is a special type of concrete that differs from ordinary concrete by its highly porous nature, which is why this type of discrete material can not be modelled using the Finite Element Method (FEM). Behaviour of pervious concrete samples with different aggregate sizes and void ratios is simulated in the paper, using the Particle Flow Code (PFC) software, which is based on the discrete element method (DEM). The PFC software is used to simulate various experimental results obtained on high paste content pervious concrete samples.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.14256/jce.2424.2018","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66966397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Indirect green façade as an overheating prevention measure 作为防止过热的间接环保措施
IF 1.1 4区 工程技术
Gradevinar Pub Date : 2020-08-01 DOI: 10.14256/jce.2797.2019
Valentina Lesjak, M. Košir
{"title":"Indirect green façade as an overheating prevention measure","authors":"Valentina Lesjak, M. Košir","doi":"10.14256/jce.2797.2019","DOIUrl":"https://doi.org/10.14256/jce.2797.2019","url":null,"abstract":"U radu je prikazana simulacija i eksperimentalno istraživanje utjecaja indirektne zelene fasade (IZF) na toplinsko ponašanje zgrade. Istraživanje je provedeno na lokaciji Punat na otoku Krku u Hrvatskoj tijekom ljeta 2018. godine. Primjenom IZF-a utjecaj sunčevog zračenja smanjen je do 505 W/m2, a temperature na vanjskoj površini fasade smanjene su do 13,5 K. Eksperimentalni su rezultati korišteni za simuliranje toplinske ugodnosti u unutrašnjosti zgrade primjenom jednostavnog modela. Kada je IZF postavljen preko čitavog zida izloženog suncu, prosječno smanjenje operativne temperature iznosilo je do 6 K za novu zgradu, tj. do 5 K za tradicionalnu kamenu kuću.","PeriodicalId":50415,"journal":{"name":"Gradevinar","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66967170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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