Choosing the Supporting Scheme for Foundation Pit through Analytic Hierarchy Process

2012 ◽  
Vol 204-208 ◽  
pp. 139-143
Author(s):  
Lei Peng ◽  
Dang Shu Zhao ◽  
Jing Cao ◽  
Kai Yu Jiang
Keyword(s):  
Analytic Hierarchy Process ◽  
Optimized Design ◽  
Foundation Pit ◽  
Analytic Hierarchy ◽  
Leading Role ◽  
Optimizing Design ◽  
Rating Method ◽  
Design Plan ◽  
Hierarchy Process ◽  
Relevant Factors

The choice of supporting plan for a foundation excavation plays a leading role in the optimizing design. For those foundation pits with complex circumstances, a reasonable and optimized supporting construction should be designed to meet the requirements of the surrounding environmental factors. These factors are arranged and rated through a relatively simple analytic hierarchy process (AHP) so as to determine how they affect the design plan of the supporting system. Through ratings and comparisons of relevant factors, a rating method for different design plans is proposed based on AHP analysis. Several supporting plans for a practical excavation engineering in Kunming are analyzed and compared through above method and a reasonable and optimized design plan is selected.

Weight Analysis of Accident Factors in Deep Foundation Excavation Based on Analytic Hierarchy Process

2014 ◽  
Vol 711 ◽  
pp. 529-534
Author(s):  
Zi Sheng Yang ◽  
Jun Xia Liu ◽  
Yi Ren Wang
Keyword(s):  
Analytic Hierarchy Process ◽  
Deep Foundation ◽  
Accident Rate ◽  
Foundation Pit ◽  
Analytic Hierarchy ◽  
Weight Analysis ◽  
Deep Foundation Excavation ◽  
Hierarchy Process ◽  
Factor Set ◽  
Design Construction

For the past few years, great development has been achieved in deep foundation excavation. However, due to foundation excavation’s locality, individual diversity, complexity and uncertainty, the probability of accidents in foundation pit engineering tends to be greater than that in main works, and the accident rate may even reach about 20%, which makes the study on factors leading to foundation excavation accidents quite necessary and meaningful. By use of Analytic Hierarchy Process (AHP), this paper has figured out the ratio (weight) of the investigation, design, construction and other factors leading to foundation excavation accidents to the whole factor set, which is of great guiding significance to the study on prevention and treatment of foundation excavation accidents in future.

The Problem of Adequacy of the Analytic Hierarchy Process

2020 ◽  
Vol 10 (4) ◽  
pp. 79-87
Author(s):  
V.M. Romanchuk
Keyword(s):  
Analytic Hierarchy Process ◽  
Pairwise Comparison ◽  
Measurement Procedure ◽  
Ahp Method ◽  
Calculation Algorithm ◽  
Analytic Hierarchy ◽  
Rating Method ◽  
Simple Measurement ◽  
The Analytic Hierarchy Process ◽  
Hierarchy Process

The Analytic hierarchy process (AHP) is a popular method for solving multi-criteria problems. However, the problem of the adequacy of the AHP method is not solved. Opponents of the Analytic hierarchy process believe that the AHP as a whole is erroneous and cannot be applied in practice. Proponents of the method believe that the disadvantages of the method are compensated by a simple measurement procedure. In this paper, a modification of the AHP method is proposed. A mathematical model of measurement is formulated, which contains a built-in mechanism for checking adequacy. moreover, the measurement method is preserved, and the calculation algorithm becomes even simpler. The fact is that the Analytic hierarchy process is based on the assumption that the scale of relations can be obtained by pairwise comparison using numerical judgments based on the absolute scale of numbers. Fechner’s psychophysical law is considered as a justification for the existence of the scale of relations. But there are not one, but two psychophysical laws. The existence of two psychophysical laws is a problem of psychophysics. This problem can be solved by the rating method. To overcome the disadvantages of the Analytic hierarchy process, it is also proposed to use the rating method. The use of the rating method makes it possible to use the fundamental scale of the AHP method. As an example, the problem is solved using the traditional AHP scale.

scholarly journals Assessing Aquifer Stress Index (ASI) Using Rating Method and Analytic Hierarchy Process for a Coastal Unconfined Aquifer

2019 ◽  
Vol 9 (1) ◽  
pp. 35
Author(s):  
Nara Somaratne
Keyword(s):  
Analytic Hierarchy Process ◽  
Stress Level ◽  
Water Levels ◽  
Stress Index ◽  
Analytic Hierarchy ◽  
Groundwater Availability ◽  
Extreme Stress ◽  
Rating Method ◽  
Groundwater Basins ◽  
Hierarchy Process

Small groundwater basins are highly vulnerable to over draft and susceptible to droughts as they are locally recharged. The sustainable development and management of groundwater basins therefore benefits from quantitative assessment of the basin status in terms of the current stress level. This paper introduces the Aquifer Stress Index (ASI) using a rating method and Analytic Hierarchy Process (AHP), a widely used multi-criteria decision support technique. Six evaluation criteria were used to determine the ASI; water levels, water quality, groundwater pumping, saline water intrusion, recharge and land use threat. For each criterion, a rating score and weight are used to evaluate the stress level. Rating scores for criteria were assigned based on multiple datasets obtained from the field investigations. Weightings for criteria were determined by pairwise comparison of AHP process. Based on the ASI, five characteristic stress regimes of the aquifers are defined: no stress, low stress, moderate stress, high stress and extreme stress. The stress level indicates the extent of groundwater availability and current development impact on the aquifer integrity. The method was applied in detail to Uley South coastal aquifer, and results indicate that the overall stress level of the aquifer is moderate. This research indicates that declining water levels are the major cause of Uley South basin’s aquifer stress, due to ongoing extractions and reduced long-term recharge. Depending on the aquifer stress level, management plans can be developed for sustainable use of the aquifer to help ensure current and future water security.

scholarly journals Risk Assessment of Deep Foundation Pit Construction Based on Analytic Hierarchy Process and Fuzzy Mathematics

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Guowang Meng ◽  
Jingsong Huang ◽  
Bo Wu ◽  
Yanping Zhu ◽  
Shixiang Xu ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Analytic Hierarchy Process ◽  
Assessment Method ◽  
Fuzzy Mathematics ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Analytic Hierarchy ◽  
Deep Foundation Pit ◽  
Risk Assessment Method ◽  
Hierarchy Process

The construction risk of deep foundation pit (DFP) engineering is high, and accidents occur frequently. It is necessary to evaluate the risk of deep foundation pits before construction. At present, although there are many risk assessment methods, there is not one with strong applicability and high accuracy. Based on expert scoring, this paper analyses the risk from two aspects (the severity of consequences and the probability of occurrence), divides the severity of the consequences into five indexes, calculates the risk by using the analytic hierarchy process (AHP), and sets the expert weight index so that the subjective expert scoring result can obtain the best possible objective calculation result. In addition, this paper uses the membership function from fuzzy mathematics to establish the level of risk and optimize the evaluation criteria of risk events. An engineering example is introduced, and the result of the risk assessment shows that the evaluation result R (risk value) obtained by the optimized risk assessment method in this paper is 7.9 and that the level of risk is grade III. The risk assessment method proposed in this paper has strong applicability and can obtain more accurate evaluation results. This method can provide a reference for the risk assessment of deep foundation pit engineering.

scholarly journals Implementacja procedury analitycznej hierarchizacji (AHP) do określenia rankingu pilności scaleń gruntów rolnych na przykładzie gminy Jasionówka

2018 ◽  
Vol 105 (1) ◽  
pp. 68-80
Author(s):  
Tomasz Tekień
Keyword(s):  
Analytic Hierarchy Process ◽  
Financial Resources ◽  
Analytic Hierarchy ◽  
Consolidation Process ◽  
Scientific Support ◽  
Efficient Management ◽  
Proper Order ◽  
Ownership Of Land ◽  
Hierarchy Process ◽  
Relevant Factors

The paper examines the issue of scientific support to prevent the faulty structures of farms under the consolidation process. Taking place over decades, changes in the structure and ownership of land utilized for agricultural purposes, resulted in excessive disaggregation, which obstructs proper and efficient management. The author, using an example of the Jasionówka commune (province Podlaskie, district Monki), proposes the use of analytic hierarchy process (AHP) as an opportunity to determine the proper order to carry out consolidation in the respective cadastral district. This allows for a rational use of limited financial resources when carrying out costly consolidation and an exchange of agricultural plots. The analysis was performed taking into account the relevant factors characterizing the area.

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