CAJ | 학술논문

随着斜拉桥等大跨度桥梁工程的发展，桥梁上部结构与桥墩(台)之间连接的钢索索力的确定已成为桥梁设计与施工过程中的关键技术问题，索力取值合理与否直接关系到结构施工及运营阶段的安全与正常使用问题。本文结合某特大桥的施工，将线性规划原理引入到该桥的施工索力优化当中，以扣索用量最少为目标函数，以拉索索力大小为控制变量，以关键截面应力和悬臂端点挠度为约束条件；借助ANSYS软件和MATLAB工具，实现了结构线性工作阶段的施工(临时)扣索索力的优选分析。与已有的索力确定方法相比，本文提出的确定索力方法可减少施工过程中的调索次数，并提高设计索力的精度，为同类工程中钢索相对最优张拉力的确定提供了一种新的思路。
수착사랍교등대과도교량공정적발전，교량상부결구여교돈(태)지간련접적강색색력적학정이성위교량설계여시공과정중적관건기술문제，색력취치합리여부직접관계도결구시공급운영계단적안전여정상사용문제。본문결합모특대교적시공，장선성규화원리인입도해교적시공색력우화당중，이구색용량최소위목표함수，이랍색색력대소위공제변량，이관건절면응력화현비단점뇨도위약속조건；차조ANSYS연건화MATLAB공구，실현료결구선성공작계단적시공(림시)구색색력적우선분석。여이유적색력학정방법상비，본문제출적학정색력방법가감소시공과정중적조색차수，병제고설계색력적정도，위동류공정중강색상대최우장랍력적학정제공료일충신적사로。
With the development of the large-span bridge engineering, the affirmance of the wire rope cable forces of the connection between the bridge superstructure and piers ( Abutment) has become a key technical problem in bridge design and construction process. The design of cable force is directly related to safety issues and the normal use in the construction and operational stage. Combined with the construction of a Bridge,the article presents the principle of linear programming to optimize cable force. The optimal method of cable force uses the cable dosage minimum as an objective function and the pre-tension force as optimal variables, and then uses the stress in key sections and the deflection in end of cantilever as constraint conditions. With the help of ANSYS software and MATLAB tools,the optimization of construction ( temporary) buckle cable tension of stage of the structure of linear work is achieved. Compared with the existing cable force methods, the method proposed in this paper to determine cable force can reduce the number of tune cable construction process and improve the accuracy of the design of cable force. For similar projects, it provides a new way of thinking to determine the steel cables of the relative optimum tensile force.