面向绿色工程的基建现场全过程施工控制智慧模型

当前基建现场全过程施工受到环境保护的制约,无法令施工项目达到最优调度稳定性。本文介绍了为了在满足环境约束的同时,提升调度稳定性,研究设计的面向绿色工程的基建现场全过程施工控制模型。依据绿色环保准则设置基建施工控制规则,在环境的极限约束内,对施工控制模型影响变量进行推导。根据影响变量设定基建现场环保约束参量,并使基建现场全过程施工控制过程得到最大优化,进而得到最佳施工控制模型。根据模型传输速率与每分钟调动的信息个数为调度稳定性最大指标的原则,开展通信性能与调度任务量测试。通过对比可知:基于绿色工程的基建施工控制模型设计,可以使其调度稳定性能得到较大提高。

铁路大跨度拱桥劲性钢骨架转体施工及控制

吊钟岩特大桥为一座转体法施工的大跨度铁路拱桥,重点介绍转体施工技术、施工控制模型的建立、应力位移监控方法,可为同类型桥梁施工提供参考。

杭州文晖大桥的施工控制研究

本文利用计入预应力及混凝土的收缩徐变的平面杆系有限元理论,对杭州市文晖大桥结构进行分阶段施工仿真分析.通过结构的敏感度分析和模型修正使计算模型向实际结构逼近,在此基础上对索力调整值进行优化,可为后期施工的索力调整提供更加真实可靠的理论依据,最后根据计算模型与实际结构状况的对比来提出PC斜拉桥施工控制中值得注意的问题.

Intelligent compaction theory of high roller compacted concrete dam

The concept and realization process of intelligent compaction for the construction of high roller compacted concrete dam were presented, as well as the theory of monitoring and intelligent feedback control. Based on the real-time analysis of the compaction index, a multiple regression model of the dam compactness was established and a realime estimation method of compaction quality for the entire work area of roller compacted concrete dam was proposed finally. The adaptive adjustment of the roiling process parameters was achieved, with the speed, the exciting force, the roller pass and the compaction thickness meeting the standards during the whole construction process. As a result, the compaction quality and construction efficiency can be improved. The research provides a new way for the construction quality control of roller compacted concrete dam.