Research for Evaluation Method of Urban Disaster Prevention Community Considered Human Ware

2005 ◽  
Vol 9 (2) ◽  
pp. 131-143
Author(s):  
Younghwa Choi
Keyword(s):  
Evaluation Method ◽  
Disaster Prevention ◽  
Urban Disaster

scholarly journals Planning Research on Application of Nanomaterial Technology in Disaster Prevention and Reconstruction

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Jun Shao ◽  
Huihui Yan ◽  
Haosheng Xu
Keyword(s):  
Seismic Performance ◽  
Concrete Strength ◽  
Fiber Reinforced Concrete ◽  
Silica Fiber ◽  
Disaster Prevention ◽  
Nano Silica ◽  
Ordinary Concrete ◽  
Urban Disaster ◽  
Fiber Concrete ◽  
Pva Fiber

An earthquake causes a huge loss of life and property. After an earthquake, many buildings are seriously damaged or collapsed. On the one hand, it is necessary to make full use of nanomaterials technology to improve seismic strength during reconstruction; on the other hand, scientific planning is needed to reduce pollution, carbon emissions, and energy consumption. This paper mainly studies the application of nanomaterial technology in disaster prevention and reconstruction. Through a series of planning safeguard measures, the overall seismic performance of the city is improved in order to provide theoretical guidance and technical support for disaster prevention and reconstruction. This paper mainly introduces the stress analysis of frame joints after earthquake and the planning of urban disaster prevention and reconstruction. In addition to the different types of concrete materials (ordinary concrete, nano silica fiber concrete, PVA fiber concrete), the fixed amount of water, superplasticizer, reinforcement, sand, and gravel, the concrete strength grade is C30. Then, three kinds of concrete frame joints are tested under low cycle cyclic loading to compare the seismic performance of the three kinds of concrete. The experimental results show that the fuzzy evaluation of urban disaster prevention and reconstruction planning has been carried out for 6 communities in this city. Among them, 4 communities are qualified and 2 communities are unqualified. Therefore, it is necessary to focus on seismic reinforcement or carry out urban planning research again. Compared with ordinary concrete, the bearing capacity and ductility coefficient of nano silica fiber concrete and PVA fiber concrete are increased by 37.8% and 15.6%, respectively. It is proved that the seismic performance of nano silica fiber reinforced concrete is far better than that of ordinary concrete.

Research on the Space Layout of Urban Seismic Disaster Prevention

2012 ◽  
Vol 166-169 ◽  
pp. 2037-2041 ◽  
Author(s):  
Qiu Quan Zhao ◽  
Wei Wang ◽  
Chao Feng Liu ◽  
Xiao Ran Liu
Keyword(s):  
Large Earthquake ◽  
Space Structure ◽  
Great Earthquake ◽  
Master Planning ◽  
Disaster Prevention ◽  
Emergency Relief ◽  
Urban Disaster ◽  
Space Layout ◽  
The Right ◽  
Seismic Disaster

Based on the requirement of earthquake resistance and disaster prevention in city’s master planning, taking the city's urban disaster prevention function and safety of residents in the great earthquake, large earthquake, middle seism into account, an idea for planning the layout of seismic disaster-prevention space treating city as an object was brought forward in this thesis. Especially, we mainly studied the restrictive conditions of the urban planning and construction from urban disaster prevention and reasonably planned urban disaster prevention security space structure and layout. Then it would certainly gain the spatial pattern of disaster-prevention and obtain the right resources of earthquake emergency relief, and ensure the safety of cities against earthquake disaster.

Site Selection of Underground Space for Disaster Prevention Based on GIS

2011 ◽  
Vol 71-78 ◽  
pp. 4858-4863
Author(s):  
Zi Wei Zhao ◽  
Xing Bin Wang
Keyword(s):  
Site Selection ◽  
Indicator System ◽  
Assessment Model ◽  
Underground Space ◽  
Disaster Prevention ◽  
Gis Technology ◽  
Urban Disaster ◽  
Gis Data ◽  
Selection Of ◽  
Improve Planning

Underground space for disaster prevention is a key component of urban disaster prevention system. The study applied GIS technology, established an indicator system and a comprehensive assessment model for site selection of urban underground space for disaster prevention. The result of the study, which is on the basis of GIS data collection and model principle, provided quantitative foundation for disaster prevention planning of underground space, and also helped to improve planning management and decision making.

Reviews on “Progresses of Earthquake Engineering in Japan”

2006 ◽  
Vol 1 (1) ◽  
pp. 8-10
Author(s):  
Katsuki Takiguchi ◽  
Keyword(s):  
Earthquake Engineering ◽  
Communication Technologies ◽  
Disaster Prevention ◽  
Human Beings ◽  
Leadership Positions ◽  
Urban Disaster ◽  
Tokyo Institute ◽  
Potential Risks ◽  
Institute Of Technology ◽  
Simultaneous Loss

It seems that when human beings attain one thing, it is at the simultaneous loss of something else. Upon developing recording devices, we lose our ability to memorize. Upon creating convenient computers, we lose our ability to calculate. What, then, do progress and development really mean? In considering this, time spans become especially important. How are we to properly understand the progress and changes that have occurred in the last 3 decades in light of disaster prevention and reduction? Advances in communication technologies and developments in transportation system seem somehow to have accelerated the speed at which we live and at which our lives pass. How are we to balance the changes between progress in disaster prevention/reduction and the increasing potential risks disasters can bring due to our increasingly complex society? It seems certain that one thing has not advanced at all – the human capacity for foresight. Let us consider the span of 3 decades from another perspective: Henry Petroski, in his Design Paradigms – Case Histories of Error and Judgment in Engineering – (Cambridge University Press, 1994), introduces the theory that every 30 years, a bridge falls – within the span of 30 years, succession in wisdom dies out. Articles published more than 30 years ago give us a unique opportunity to assess their foresight, especially those written by persons in leadership positions at the time. In the 3 years from 1973 to 1975, the journal Technocrat, published by Fuji Technology Press Ltd., presented 9 review articles on earthquake disaster prevention. They were all written by leaders in the field. An editorial reviewing urban disaster prevention in Japan was also published in Toshi bousai keikakuron (Urban Disaster Prevention Planning) (Dobunshoin) in 1986 – roughly a decade later. These 10 articles will be republished in Vol. 1 Nos. 1-3 in this journal, together with new articles reviewing progress and development afterward. This unique series will consist of 18 articles as shown in the following list. Don’t miss it! Katsuki Takiguchi Professor, Tokyo Institute of Technology

Evaluation Method of Urban Comprehensive Disaster-Carrying Capability Based on Fractal Theory

2011 ◽  
Vol 90-93 ◽  
pp. 3155-3160 ◽  
Author(s):  
Wei Wang ◽  
Jie Tian ◽  
Zhi Tao Wang ◽  
Xiao Dong Guo ◽  
Dong Hui Ma
Keyword(s):  
Evaluation Method ◽  
Fractal Theory ◽  
Fractal Dimensions ◽  
Assessment Method ◽  
Scientific Basis ◽  
Disaster Prevention ◽  
Actual Situation ◽  
Fractal Method ◽  
Characteristic Index ◽  
Fuzzy Assessment

In order to correctly evaluate urban comprehensive disaster-carrying capability and then to establish scientific basis for disaster prevention and reduction, a fractal method for urban comprehensive disaster-carrying capability is proposed on the basis of system principle which is that structure determines function. The fractal dimensions of 29 cities are calculated and analyzed. The results show that relative stronger, middling and weaker are respectively 13.79%, 65.52% and 20.69%, which are completely consistent with the actual situation. So the method can construct a characteristic index, and the main impact effects can be analyzed according to the result. Tested by examples together with the other two methods, i.e. the fuzzy assessment method and exponent method, the results verify effectively that this method is useful and feasible.

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