AbstractBased on actual construction cases, this paper focuses on the design of main machine translation tooling and the main machine translation process in the tunnel of large-diameter TBM. Aiming at the design and dismantling tooling of the large-diameter screw machine in the tunnel, the key work of the tooling and the dismantling process was expounded. According to the requirements of the Back-up system retreat to the launching shaft, all Gantries retreat method is designed, the special tooling design is carried out, and the method is explained. SolidWorks 3D modeling software was used to build the disassembly model and conduct finite element analysis to check the strength of the tooling. This case ensures the safety of construction and improves the efficiency of TBM dismantling, which has reference significance for the future dismantling of large-diameter TBM in tunnel.
以唐山市丰润区滨河南道南、新丰路东地块项目为例,分析了该项目的基本情况,探究了屋面防水施工技术中普遍存在的问题,重点分析了丰润区滨河南道南、新丰路东地块项目屋面防水施工技术方案,希望为行业从业者提供参考和借鉴.
以广州地铁8号线同德围站一上步站盾构隧道工程为研究背景,采用有限元模拟和现场监测相结合的方法,并提出基岩侵入比的概念,研究在不同基岩侵入比条件下盾构隧道施工引起的地表沉降规律,研究结果表明随着基岩侵入比的增大,地表沉降值减小,不同基岩侵入比地层地表沉降差异明显,0～0.2和0.5～1的基岩侵入比是敏感区间,在这两个基岩侵入比区间的沉降值变化较大.
为提高带行走门架的塔式起重机塔身刚性和抗风能力,塔身和门架之间设置支撑杆结构即八杆结构.本文介绍了塔式起重机八杆结构的构造特点和设计方法,介绍八杆接头节点连接方式,阐明其拆分方式及其制造工艺流程,说明带八杆门架的塔式起重机构造新颖,刚度控制更好.
