时空效应理论与软土基坑工程现代设计概念  

Theory of time-space effect and modern design concepts in soft soil pit engineering

作　　者：范益群[1] 钟万勰[1] 刘建航[2] 

机构地区：[1]大连理工大学工业装备结构分析国家重点实验室,大连116023 [2]上海市隧道工程轨道交通设计研究院刘建航院士研究室,上海200070

出　　处：《清华大学学报（自然科学版）》2000年第S1期49-53,共5页Journal of Tsinghua University(Science and Technology)

基　　金：上海市市政工程管理局科技发展基金

摘　　要：研究了时空效应理论与工程控制论的内在联系 ,指出考虑时空效应的软土深基坑设计与施工技术理论和方法 ,在本质上等同于工程控制论在软土深基坑工程中的应用。提出了基于时空效应理论的软土深基坑工程的现代设计概念 ,即 ,软土深基坑设计 ,应设计成闭环系统 ,包含初始标称设计、监测方案设计和控制方案设计 3个部分 ;在初始标称设计中 ,应选择适当的计算模型 ,并通过过去类似工程的实测资料 ,通过辨识确定模型参数和结构 ,使得软土基坑变形预测值与实测值基本相符 ,保证初始标称设计具有足够的可靠性 。To study the inner connection between the theory of Time Space Effect (TSE) and engineering cybernetics in soft soil excavation, the technical theory and method in soft soil pit design and construction by using the rule of TSE is consistent. Based on the theory of TSE, modern design concept in soft soil pit engineering is proposed. That is, soft soil excavation should be designed to a closed loop system, which includes three parts: initial nominal design, monitoring plan design and controlling plan design. In initial nominal design, computational model should be chosen suitably and its parameters and structure may be identified by the analysis of the last alike engineering in situ direct measured data. Those will make the deformation agree with real measured values. It guarantees that the reliability of initial nominal design is enough and the safety around the deep excavation and constructional quality are being in controlled state.

关 键 词：时空效应原理 工程控制论 计算模型 深基坑设计的开环/闭环系统 初始标称设计 监测方案设计 控制方案设计 

分 类 号：N55[自然科学总论]