基于非线性规划的综合管廊断面尺寸设计优化

Design Optimization of Standard Cross-section Size of Utility Tunnel Based on Nonlinear Programming

传统的综合管廊断面尺寸设计过分依赖相关规范取值以及经验的主观判断,造成管廊空间利用率不足等问题。为提高综合管廊空间利用率、降低建设投资成本,提出一种基于非线性规划对综合管廊断面尺寸设计进行优化的方法。通过构建数学模型并采用Matlab软件对案例优化进行精确计算,使设计结果更加科学合理。最后通过案例分析验证方法的可行性,在控制成本的条件下,将断面面积提高了20.8%,满足规范要求的同时提高了空间利用率。

The conventional cross-section size design of the utility tunnel relies too much on the subjective judgment of the relevant normative values and experience,resulting in a series of problems such as insufficient utilization of space.As a result,a method for optimizing the cross-section size design of the utility tunnel based on nonlinear programming is proposed to improve the utilization rate of utility tunnel space and reduce the construction investment cost.The mathematical model is established and the case optimization is calculated by software Matlab to make the design result more scientific and reasonable.The feasibility of the method is verified according to case analysis.The results show that under the condition of controlling cost,the cross-section area is increased by 20.8%,which meets the requirements of the relative codes and improves the space utilization rate as well.