| In May 2018,the Shandong provincial party committee,the provincial government issued by the relevant documents about rural revitalization of strategic planning,for the protection of traditional villages and traditional local-style dwelling houses in Shandong province and development put forward the specific requirements,clearly put forward to the continuation of the village of traditional context,to reinforce the protection of the traditional village,to protect the cultural gene characteristics of villages and towns,therefore,the protection of traditional houses in Shandong province and become the important content of the rural revitalization strategy implementation.Traditional dwellings with stone-wood structure are mainly distributed in the central mountainous area of Shandong province,with a large number and a large proportion.However,problems such as lack of reliable evaluation system,lack of effective protection and weak awareness of protection of residents seriously hinder the protection and sustainable development of traditional dwellings with stone-wood structure,and the status quo of preservation is not optimistic.Therefore,the establishment of a scientific evaluation model for the performance of traditional dwellings with stone-wood structure in the mountains of central Shandong and the study of the existing problems of traditional dwellings with stone-wood structure are of great significance for improving the protection and utilization status of traditional dwellings with stone-wood structure in the mountains of central Shandong,as well as facilitating the implementation of the strategy of rural revitalization.On the basis of field investigation,this paper determined the performance evaluation index system of traditional stone-wood structure residential buildings in the mountains of central Shandong by referring to relevant literature.From three aspects of architecture,structure and landscape,a total of fifiteen detailed evaluation indexes were used for comprehensive evaluation.Then the combined weighting method,namely the combination of analytic hierarchy process and entropy weight method,is used to determine the weight coefficient of the evaluation index.Finally,a complete performance evaluation system of traditional dwellings with stone-wood structure in the mountains of Shandong is established by fuzzy comprehensive evaluation method.The evaluation system is developed on the basisof the established model,and the model is verified by engineering cases.The results show that:The performance evaluation model of traditional dwellings with stone-wood structure established in this paper is proved to be reasonable and scientific,and the evaluation system effectively reduces the calculation amount of the model,providing technical support for the excavation and protection of traditional dwellings with stone-wood structure in the mountains of central Shandong and facilitating the implementation of the rural revitalization strategy.The investigation found that there were serious problems in the roof system of traditional folk dwellings with stone-wood structure in the mountains of central Shandong,and the failure and decay of wood bending members were very common.Therefore,this paper took the elm wood structure widely used in traditional folk dwellings with stone-wood structure in the mountains of central Shandong as the research object,and studied its anti-corrosion performance and bending resistance.Choose copper quaternary ammonium salt solution(ACQ),arsenic,chromium,copper solution(CCA)and tung oil three kinds of preservatives to elm specimen processing,wild buried method is used to accelerate specimen decadent,remove the specimen according to the plan of age after the record its corrupt degree,and then test specimen bending strength,explore the elm specimens under different state of decay of hurt decline law of the bending capacity,fitting in good condition index and the bending strength,the average was in good condition index and the bending strength curve.The results showed that:(1)CCA and ACQ preservatives have stable performance,in which the performance of CCA preservative is slightly better,and the anti-corrosion performance of tung oil is unstable;(2)There is an exponential function relationship between the intact index and the mean value of bending strength of elm wood specimens.The anti-corrosion treatment can effectively reduce the decline of bending strength of elm wood specimens,providing a reference for predicting the bending strength of elm wood components under different decay damage states.The research results of this paper can provide reference for the protection and repair of traditional stone-wood dwellings in the mountains of central Shandong.The innovations of this paper are as follows:(1)The performance evaluation system of traditional dwellings with stone-wood structure was determined,the performance evaluation model of traditional dwellings with stone-wood structure was constructed and the evaluation system was developed.(2)The antiseptic effects of ACQ,CCA and tung oil were clarified.The relationship between intact index and bending strength was established to provide technical support for theprotection and development of stone-wood structure traditional residential buildings in the mountains of central Shandong. |
