การประเมินสภาพทางเพื่อใช้ในการบริหารงานบำรุงทางหลวงชนบท
Most of road deterioration is caused by aging and traffic volumes. Continuous maintenance is therefore necessary in order to preventing roads from failure. Due to limited budget, maintenance management is needed to prioritize maintenance needs according to types of distresses and its degree of deter...
محفوظ في:
| المؤلف الرئيسي: | |
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| مؤلفون آخرون: | |
| التنسيق: | Theses and Dissertations |
| اللغة: | Thai |
| منشور في: |
จุฬาลงกรณ์มหาวิทยาลัย
2001
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| الموضوعات: | |
| الوصول للمادة أونلاين: | https://digiverse.chula.ac.th/Info/item/dc:46637 |
| الوسوم: |
إضافة وسم
لا توجد وسوم, كن أول من يضع وسما على هذه التسجيلة!
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| المؤسسة: | Chulalongkorn University |
| اللغة: | Thai |
| الملخص: | Most of road deterioration is caused by aging and traffic volumes. Continuous maintenance is therefore necessary in order to preventing roads from failure. Due to limited budget, maintenance management is needed to prioritize maintenance needs according to types of distresses and its degree of deterioration. This study analyze factors affecting maintenance prioritization. The model is also developed to evaluate road condition for the purpose of maintenance management. Data used in this study is from twenty three rural roads projects of the Department of Public Works (PWD). The evaluation of road condition varies among each authority due to the difference in their objectives. The purpose of constructing rural roads of PWD is to provide necessary infrastructure to community. At present, deteriorated roads are ranked for maintenance due to budget limitation. The current evaluation method is based on visual measurement. Road inspectors then recommend maintenance priority based on their experience. As a result, such method cannot identify the type and degree of road distresses. Moreover, such method gives biased result due to subjective measurement which varies among each inspector. This study develops the evaluation method using the road condition index which reflects the importance of road distresses. The important steps for developing the model are defining distresses which are frequently found, weighting the importance of each distress, and rating road condition by using the Analytic Hierarchy Process (AHP) based on engineering experts. The model is developed in the form of the Rural Road Condition Index (RCI). The results of case studies using such index are then compared with experts’ judgment in order to finalizing the practical RCI. The results show that there are eight frequently found distresses which seriously affect the road condition. Upon analyzing the result from field survey and after evaluation of important weight of each distress, six distress types are selected to form the model. The importance of distresses are potholes, alligator cracks, utility cut depression and patching, depression, rutting and longitudinal or transverse cracks respectively. Upon testing the model for validation and reliability, the results show high correlation with the evaluation by experts and other widely used models. Therefore, the benefit of using this model is to provide the same standard of evaluation method based on quantitative measurement. As a result, it decreases the variation of evaluation among inspectors. Moreover, the results also reflect the importance and extent of each distress. Roads which are in serious deteriorated would therefore get priority for maintenance which maximizes the effective use of restricted budget. |
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