CCTV主楼悬臂部位大型塔式起重机安装技术

CCTV主楼塔楼双向倾斜,塔楼1、2分别安装1台M1280D和1台M600D动臂式塔式起重机,4台塔式起重机拆除难度大,需要先移装2台M600D塔式起重机至悬臂部位.重点介绍,M600D塔式起重机悬臂支撑没计以及附着设计和加工.指出可以通过对桁架增加立柱的方式对悬臂进行加固;另外,附着杆的增加可以降低起重机对下部悬臂桁架的不利荷载.最后介绍了悬臂部位M600D移位安装流程.     

CCTV主楼大型塔式起重机拆除技术

CCIN主楼塔楼分别采用1台M1280D和1台M600D动臂式塔式起重机,4台大型起重机部件超重、超大且屋面倾斜,拆除难度大.分析了工程特点和设备性能,针对性地采用不同的拆除方式,介绍了塔式起重机顺序拆除和与屋面起重机WQ16、WQ6相结合的拆除技术.关键点在于拆卸起重臂时,不能卣接拆卸吊到地面,而应将起重臂分解拆散后吊运地面装车运出,因此需提前准备好满足性能要求的汽车起重机和板车.     

广州珠江新城西塔大型动臂式塔式起重机爬升工艺研究

为配合主体结构施工,广州珠江新城西塔主塔楼安装了3台M900D动臂式塔式起重机.本工程塔式起重机分3阶段施工,工艺复杂.根据结构槽形墙变截面处理、塔式起重机爬升和转换过程复杂、工期紧张等技术难点,提出塔式起重机施工的支撑方式、爬升规划、爬升流程,详细介绍了牛腿的定位及焊接、垂直度及安全性保证措施.     

品茗“塔机黑匣子”助推“亿元级塔吊”智慧施工

正本刊讯近日,随着最后1台ZLS2700动臂式塔吊安装完成,由品茗安控公司承担塔机黑匣子研发安装实施任务,中建三局二公司耗资亿元购进的4台大型动臂式塔吊,在武汉绿地中心项目主塔楼全部投入使用。项目主塔楼共布置4台动臂式塔吊,其中1台ZSL2700、2台M1280D动臂式塔吊分别安装在核心筒内侧,呈"三足鼎立",     

深圳平安金融中心大型动臂塔式起重机配置关键技术

深圳平安金融中心主塔楼施工中,在核心筒墙外侧布置4台大型动臂塔式起重机,用于钢构件和其他材料的垂直运输。详细介绍了塔式起重机选型布置,塔式起重机附着形式,塔式起重机爬升高度,能满足现场材料运输需要,保证了施工顺利进行。     

吉隆坡标志塔大型动臂塔式起重机拆除施工技术

吉隆坡标志塔项目安装塔冠用的ZSL380塔式起重机,位于离地452m的高空,塔式起重机拆除具有高度高、塔冠顶部施工空间狭小且吉隆坡当地屋面式起重机资源不足等特点。针对工程施工特点,介绍分级拆除大型动臂塔式起重机的施工方法,创新性地在第90层安装1台M180附着式动臂塔式起重机,拆除ZSL380塔式起重机,并对塔式起重机拆除各阶段中的重点与难点进行介绍。结果表明,拆除过程安全、顺利。     

广州新电视塔外挂内爬式塔式起重机应用技术

广州新电视塔采用2台M900D外挂内爬式塔式起重机.详细介绍了该起重机的基本构造及相关参数、爬升支承架组成、安装流程和爬升流程.为确保起重设备正常运转,对起重机进行了试吊及应力测试,其中试吊包括单绳试运转和双绳试运转.监测结果表明,塔式起重机在安装、负载试验、爬升过程中各构件最大应力均小于材料抗拉强度,满足安伞度要求.     

基于复杂塔冠结构的大型塔式起重机拆除技术

武汉中心工程塔楼采用1台ZSL1250塔式起重机及1台M900D塔式起重机施工,塔楼顶部为由异形复杂空间桁架组成的塔冠结构。详细介绍了武汉中心工程2台塔式起重机拆除过程中基于复杂塔冠结构的优化及措施技术,即结合塔冠整体建模分析,优化了措施塔式起重机选型及基础布置方案;结合塔冠结构受力特点,设计了合理的措施塔式起重机基础。     

利通广场M600D内爬塔式起重机安装、爬升与拆除技术

利通广场主体结构采用钢斜撑框架+混凝土核心筒结构,高302.9m.结合本工程实际情况及通过方案比选,施工阶段采用2台M600D内爬动臂式塔式起重机.制定了塔式起重机安装、拆除方案及各项安全管理措施,阐述了内爬式塔式起重机的平面布置、型号选择、安装、爬升及拆除技术,保证了起重机安全运行、满足施工需要,有效保证了施工工期.     

超高层爬升塔式起重机支座处结构分析及加固做法

杭州望朝中心建筑总高度为280m,塔楼主体结构施工采用2台大型内爬外挂式动臂塔式起重机.由于塔式起重机支座节点处荷载较大,针对结构局部区域强度或刚度不足位置进行验算,对塔式起重机支座进行分类,采取局部钢筋加强增加撑材和两者结合的加固方案,解决了爬升或起重机附着处结构加固问题.     

太原湖滨广场超高层内爬外挂塔式起重机施工技术

太原湖滨广场主楼采用钢结构外框架-混凝土核心筒结构,高208m,在施工过程中采用2台大型内爬外挂塔式起重机。采用一套循环组合钢结构挂架将塔式起重机悬挂于核心筒的外壁,使塔式起重机随着核心筒的施工进度协调爬升。详细介绍了内爬外挂塔式起重机选型、附着方式、施工原理及挂架的加工制作、质量控制、挂架安装等施工工艺,解决了超高层建筑的垂直运输问题,提高了大型塔式起重机的使用效率,加快了施工进度。     

北京华贸中心写字楼群塔施工技术

介绍了北京华贸中心写字楼施工中塔吊群的布置原则和设计过程,并对塔吊群运行期间的安全注意事项作了介绍。     

施工现场塔机机群的安全使用与管理

本文主要阐述了塔机机群在施工现场的平面合理布置和高度平衡协调方法,以确保塔机的安全、高效运行。     

Integrating 3D visualization and simulation for tower crane operations on construction sites

Most high-rise building construction projects rely on tower cranes to perform lifting and hoisting activities. In practice, tower cranes are managed based on demand, urgency, and prioritized work tasks that must be performed within a set period of time in the field. As a computer tool, simulation has proved to be effective in modeling complex construction operations and can be a substantial help in aiding practitioners in construction planning. However, the use of simulation has fallen far below its maximum potential due to a lack of appropriate support tools which would allow construction managers to use simulation tools for themselves. Special purpose simulation (SPS) and 3D visualization of simulated operations are two potential means that enable domain experts, who are knowledgeable in give domains, but not familiar with simulation, to easily model an operation within their domain and analyze the simulation results. This paper presents a practical methodology for integrating 3D visualization with SPS for tower crane operation. An integrated system was built in a 3D Studio MAX environment and tested in the construction of the new civil and environmental engineering building at the University of Alberta. This paper demonstrates that 3D visualization is helpful in the verification and validation of simulation results, and can effectively communicate the essence of a simulated operation, thus improving the accessibility of simulation as a decision making aid.     

动臂式塔式起重机在超高层建筑中的应用

超高层钢结构塔式起重机的选择直接关系到施工现场资源配置、构件分段分节及焊接工作量等,进而影响整体施工进程。对超高层建筑动臂式塔式起重机施工经验进行研究及总结,重点介绍超高层建筑动臂式塔式起重机的选型、安装、爬升等施工技术,可供同类工程参考。     

Decision support for tower crane selection with building information models and genetic algorithms

Tower cranes are major construction equipment that is highly demanded in construction projects. The planning process for tower cranes utilization starts in early stages of the construction projects. Poor selection could incur extra costs on the construction projects or cause delays in project duration. The planning procedures for tower cranes include selection, allocation and operation. This paper presents a framework for the selection of tower cranes types and locations at construction sites. The framework considers three main models: 1) decision making model to select the tower crane type, 2) optimization model for the selection of the ideal number and location of tower cranes, and 3) 4D simulation model to simulate tower crane operations. Several clash detection scenarios are presented to assure the safety operation of the tower crane group. A case study is shown herein to demonstrate the capabilities of the developed framework.