铁路桥梁路基隧道关键工序监控技术研究

Automatic Monitoring Technology Research on the Key Progress of Construction of Railway Bridge,Subgrade and Tunnel

研究目的:依托于铁路工程管理平台,开展对铁路桥梁预应力梁张拉质量、路基压实质量、隧道支护结构质量的自动监控技术研究,调研目前的监控方法存在的问题并提出解决问题的技术方案。采用当今先进和成熟的计算机开发技术和面向对象模块化设计思路,研究桥梁预应力自动张拉系统、路基连续压实检测系统、隧道衬砌混凝土灌注密实监测系统,以及相应的信息上传、展示平台,实现路桥隧关键工序的信息化施工控制与远程管理。研究结论:(1)研发桥梁预应力自动张拉系统,并通过了现场试验验证,验证结果表明该系统工作性能稳定,能实现张拉、静停、锚固阶段全过程自动平衡张拉,张拉两端不平衡力小于控制张拉力的1%,张拉力的控制精度在0.5%以内,张拉数据可远程传输至信息管理平台并实时展示;(2)研发路基连续压实检测系统,并通过了现场试验验证,验证结果表明该系统工作性能稳定可靠,能随压路机行驶自动检测整个路基面压实质量,检测结果可以在现场显示终端和网络平台上实时显示,其检测结果与常规压实指标相关系数大于0.7,满足相关技术规程要求;(3)提出了隧道衬砌混凝土灌注密实监测系统的技术方案与系统设计,该方案经论证是可行的;(4)这三个系统可应用于铁路施工质量控制及信息化领域。

Research purposes： Relying automatic monitoring technology research on the platform of information management of railway construction, carry out to the quality control of prestressed beam tension, subgrade compaction, tunnel lining. Find out existing problems of current monitoring method and put forward the technical scheme for solving these problems. Develop information technology and information platform, realize the informationization and remote management of key process of railway construction. Research conclusions：（ 1 ）The automatic control system for prestressed beam tension is confirmed stableand reliable. The results show that the system can balance the tension at both ends of the beam, the unbalanced force is less than 1% of the control tension, andtension control precision is within 0.5 %. The test results can be transferred and displayed on the information management platform. （2） The continuous compaction control systemis confirmed stableand reliable. The quality of subgrade compaction can be tested and showed in the way of images, which can also be transferred and displayed on the information management platform. The correlation coefficient between the results of continuous compaction control and conventional test is greater than 0.7, which satisfied the requirements in relevant procedures.（ 3 ） Put forward the technical scheme and system components of quality control system of tunnel lining. （4） These three systems can be applied in the informationization field of railway construction.