Analysis method of optimization model based on expanded-base uplift pile
An analysis method, a technology for optimizing models, applied in genetic models, sheet pile walls, genetic laws, etc., and can solve problems such as inability to meet
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Embodiment 1
[0096] In this example, see figure 1 and figure 2 , an analysis method based on the optimization model of the bottom-enlarging uplift pile, the steps of the analysis method are as follows:
[0097] 1) By combining the optimization design theory, the expression of the expected mathematical function model with the goal of minimizing the construction cost in pile foundation engineering is:
[0098]
[0099] In the formula, Q(x i ) is the engineering cost of the uplift pile; x i Relevant parameter constraints of uplift piles;
[0100] The main components of single uplift pile engineering cost are the amount of concrete in the pile body, the amount of steel reinforcement in the pile body and the excavation amount of the pile hole of the uplift pile; taking the engineering cost of the uplift pile foundation as the target expectation function, the target expectation of the project cost The function is expressed as the following:
[0101] ① Determine the amount of concrete fo...
Embodiment 2
[0177] This embodiment is basically the same as Embodiment 1, especially in that:
[0178] In this embodiment, the analysis method first encodes the specific values of each variable through binary to generate an initial population, and establishes a mapping relationship between the genotype and the value of the specific variable; on this basis, the encoded initial population is The first evaluation is to find the minimum value of the fitness function, and then select the individuals who do not adapt to the function through the selection operator subroutine, and then pass through the crossover operator and the mutation operator to generate a new generation of population, and further select the population again , crossover and mutation, generation by generation evolution produces population individuals that meet the adaptive requirements, and the optimal solution to the problem is obtained by decoding the final population, and the program is written using Matlab.
[0179] In t...
Embodiment 3
[0181] This embodiment is basically the same as the previous embodiment, and the special features are:
[0182] In this embodiment, the optimization model calculation method of bottom-enlarging uplift piles is discussed. The single-built underground garage of Shanghai Ruijin Hospital has a buried depth of 5.8m and a total area of about 3500m 2 , and the overlying soil above the top plate is about 1m deep and used as land for greening and recreation. The soil layer distribution within the depth range of 40m below the surface is shown in Table 1 below. Since the groundwater in the shallow part of the project base belongs to the diving type, the stable water level is 0.8-1.0m. Because the garage of this project is located below the ground, the influence of its water buoyancy cannot be ignored. In order to meet the anti-floating requirements of the project, a large number of bottom-enlarged uplift piles were used in the garage foundation project to resist the influence of wate...
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