多元组合桩式复合地基优化机理与布桩拓扑优化方法

项目名称： 多元组合桩式复合地基优化机理与布桩拓扑优化方法

项目编号： No.51279171

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 水利工程

项目作者： 张爱军

作者单位： 西北农林科技大学

项目金额： 81万元

中文摘要： 当前，地基处理技术与复合地基理论的广泛结合，出现了许多以优化为目的的设计方法与理念，深化和发展这些方法是复合地基理论发展的迫切需要。本项目拟采用数值计算和原型观测相结合的方法，分析多元组合桩式复合地基整个系统的共同工作机理和各承载阶段的变化规律，探索达到优化目的的组合标准，建立优化组合的参数体系和各类优化方法的设计原则，寻求各类优化方法的共性特点，建立复合地基优化理论框架体系；以散体桩复合地基为对象，完善工后浅层加固技术，并探讨工后浅层加固与深层后灌浆或者注浆技术相结合的复合地基工后加固优化技术，提出简化设计方法；以刚性基础下多元复合地基为对象，研究采用连续体结构拓扑优化理论确定复合地基合理布桩型式的方法，并进行模型试验验证。项目的研究必将促进复合地基由基础理论向优化理论的发展，具有重要的理论和实际意义。

中文关键词： 复合地基；多元；拓扑优化；数值计算；模型试验

英文摘要： With the extensive combination of foundation treatment technology and composite foundation theories, a series of new design methods and concepts, which focus on the optimization, appear recently. development of these methods is the urgent need of the development of composite foundation theory. A combination of methods of numerical calculation and prototype observation will be adopted in this project, and the detailed scope of this work includes the following: (1) To analyze common working mechanism and variations of each bearing stage of the entire system of multivariate pile composite foundations to seek common characteristics of different classes of optimization methods; (2) To summarize fragmented and isolated composite foundation methods to establish a systematic and theoretical composite foundation optimization theoretical framework; (3) To study granular pile composite foundation to improve the shallow reinforcement technology, and to combine shallow reinforcement and deep post-construction grouting technology to explore the composite foundation post-construction reinforcement optimization technology; (4) Using continuum structural topology optimization theory to study multiple-composite ground under rigid foundation to seek the method of reasonable layout of pile type of composite foundation, and using mo

英文关键词： omposite ground；multivariate；topology optimization；numerical calculation；model test