Researches On The System Of The Existing Building Safety And Crisis Management In City

This paper aims at the present conditions of the house building maintenance and management.It sets up a system of the maintenance and management on the house buildings,which is a three dimensional system including technology dimensional, entity dimensional and institution dimensional.It deals with the normal management mode on the buildings health,crisis management,the test appraisal industry development,the juristic guarantee system and the life cycle cost management.The main contents are the following:1.Clear the relationship of the rights and responsibilities and construction of a three dimensional system analysis for buildings maintenance and managementDuring the service periods of the house building,there are many person responsible to its safety,including the person who own the property right,the person who is authorized the right,professional manager,lesser,lessee,the person in maintenance and reinforcement,the person for demolition,the person of safety appraisal and the government.So,it is necessary to make clear the rights and duties from different people on the house buildings' safety,only by this way,can it provide a guarantee on the system.The safety management system is complex,and it needs the guarantee from technology,entity and the legal system.Analyzed all the factors from the three dimensional,it is benefit to the system management and operation,and will be helpful for improvement and promotion in future.2.The system of buildings' safety assessmentIn order to make preparation for the buildings' health files and information,it set up a buildings' safety assessment system.The factors on building safety are complex and multiple,it analyzed all the factors then classified,including four kinds:history condition,environment condition,bearing capacity and durability.A hierarchical structure was founded.Because the messages on the buildings' safety condition is fuzzy and the factors effect on the buildings' health is complicated.Most of the factors are not independent. Based on theλ-fuzzy measure,using Choquet integral decision-making method can solve this kind of problem,because it can reflect the absolute importance of factors on the buildings,but also deals with the factors relationship among them.Therefore,the decision making mode can determine the buildings health condition completely.Then a case was studied at last.3.Buildings' test and appraisal industry analysis and developmentThe industry of test and appraisal is a technology guarantee to the buildings' health. It depends on the technology,and need many kinds of new test methods.With the economic development and promotion,the old mode can not fit with the present requirement.Then the paper studies the cases from some cities on this industry, analyzes the market prospect,and proposes a competed mode in market in future.Once the test and appraisal industry steps into the market,there must be competition. With the development of the industry of building safety on the strength and rehabilitation,the owner occupier is dissymmetry with the construction company in message.Under this condition,multi-attributes decision making model can solve the problem of selection.4.Crisis management and the mode of dynamic grade crisis management on buildings' safetyThe crisis management on the buildings' safety is one part of the integrated crisis system in cities.But because the buildings' safety crisis management has its own specialties,it also is independence.So this crisis system's key point is to emphasis on the prevention,prediction,early-warning,early-warning defused and disposal in the earlier stage.The paper puts forward the classification management mode in crisis response system.During the stage of disposing safety crisis,the paper puts forwards the dynamic grade management mode.At the stage of the crisis disposal,the crisis condition was continuous changing,so the dynamic grade management is suitable.Based on the fuzzy decision making theory,a dynamic grade mode was founded.It can determine the danger level at some time point in future,and then direct emergency action5.The legislation guarantee system analysisBuildings safety management system operating healthy relies on the local legislation and the central legislation.But for a long time,the government pays more attention to the construction,but ignores the management for the buildings,this paper analyzes the present conditions and points out the weak links,then puts forward the measurement and improvement direction in the future6.The mode of life cycle quality and cost managementThe mode of life cycle quality and cost management is a scientifically and complete management morphology for the buildings safety,which is also the development tendency in the future.The key point is the life cycle cost management.During the invest decision making and design periods,the investment is considered,but the investment consideration is not emphasis on the earlier stage,but on the total life cycle of the building.So the life cycle cost analysis is from the beginning of the decision making to the demolition.The model of life cycle cost is formed used to study the life cycle plan,the life cycle cost analysis and the life cycle cost management.