WO2011060659A1 - 大跨度柱面网壳安装方法 - Google Patents

大跨度柱面网壳安装方法 Download PDF

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Publication number
WO2011060659A1
WO2011060659A1 PCT/CN2010/076514 CN2010076514W WO2011060659A1 WO 2011060659 A1 WO2011060659 A1 WO 2011060659A1 CN 2010076514 W CN2010076514 W CN 2010076514W WO 2011060659 A1 WO2011060659 A1 WO 2011060659A1
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Prior art keywords
arch
ball joint
installation
mother
span cylindrical
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PCT/CN2010/076514
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English (en)
French (fr)
Inventor
徐玉平
Original Assignee
Xu Yuping
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Publication date
Application filed by Xu Yuping filed Critical Xu Yuping
Publication of WO2011060659A1 publication Critical patent/WO2011060659A1/zh
Priority to US13/475,499 priority Critical patent/US20120227353A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/32—Arched structures; Vaulted structures; Folded structures
    • E04B1/3205—Structures with a longitudinal horizontal axis, e.g. cylindrical or prismatic structures
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E04B1/1903—Connecting nodes specially adapted therefor
    • E04B1/1906—Connecting nodes specially adapted therefor with central spherical, semispherical or polyhedral connecting element
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E04B2001/1924—Struts specially adapted therefor
    • E04B2001/1927—Struts specially adapted therefor of essentially circular cross section
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E04B2001/1957—Details of connections between nodes and struts
    • E04B2001/196—Screw connections with axis parallel to the main axis of the strut
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/32—Arched structures; Vaulted structures; Folded structures
    • E04B2001/3217—Auxiliary supporting devices used during erection of the arched structures
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/32—Arched structures; Vaulted structures; Folded structures
    • E04B2001/3235—Arched structures; Vaulted structures; Folded structures having a grid frame

Definitions

  • the invention relates to a construction method for a large span cylindrical shell structure, in particular to a large span cylindrical shell installation method.
  • the dry coal shed of the thermal power plant usually needs to reach more than 76 meters due to the technology of the coal shovel, and some even exceed 110 meters, and its net height is generally above 28 meters.
  • This scientifically and economically rational solution for a large-span, high-height enclosed shed is a cylindrical reticulated shell structure, which has been verified by mathematical and mechanical theoretical calculations.
  • its installation process has been constantly changing and exploring. Different installation processes will result in different costs and schedules, with different results.
  • the traditional construction process is divided into integral scaffolding construction method and local scaffolding construction method.
  • the whole scaffolding construction method needs to build scaffolding in the area covered by the entire cylindrical reticulated shell, which has long construction period and high cost.
  • the local scaffolding construction method first installs scaffolding to install one.
  • Torus and then based on this torus, use the high-altitude cantilever construction method to extend the ring to the sides.
  • the local scaffolding construction method only needs to build some scaffolding, which is beneficial to shorten the construction period and reduce the construction cost; for example, the Chinese patent application "a method for constructing a high-altitude cantilever of a shell-type bolt-and-ball joint network frame", Patent Application No. 200810231497. This patent application discloses such a local scaffolding construction method.
  • the local scaffold construction method should build a scaffold with a height equivalent to the highest position of the cylindrical reticulated shell. For the extra large and ultra-high cylindrical reticulated shell, the construction cost and construction difficulty are still relatively large.
  • the invention provides a large-span cylindrical net shell installation method, which does not need to build scaffolding, uses a crane as an auxiliary tool, is simple and practical, has high reliability, low cost and short construction period.
  • the present invention adopts the following technical solutions:
  • the ball joints are used to install the other ball joints and the tie rods on the arch in turn; when the ball joints and the tie rods are installed, the female arches which are supposed to be vertically and horizontally extended are laterally extended and installed, in the process of lateral extension of the female arches.
  • the movable ball joint is mounted on the support in a rotatable, spherical position that is immovable.
  • the active ball joint is completed before the installation of the entire large span cylindrical shell is completed. Fixed connection to the support.
  • FIG. 1 is a perspective view of a mounting construction of an embodiment of the present invention
  • Figure 2 is a schematic view of the installation and construction of the mother arch when it is halfway mounted
  • Figure 3 is a plan view of the construction of the arch from the final stage of installation
  • Figure 4 is an elevational view of the mother arch after installation.
  • a method for installing a large-span cylindrical reticulated shell according to the present invention includes the following steps:
  • each of the arched arches comprising at least four supports 1 symmetrically disposed on both sides and mounted on the four
  • the brackets 1 are connected to each other in a grid-like ball joint and tie rod; first install a stack The arch, the first installed arch, we call it the mother arch.
  • the mother arch has two supports 1 on each side, and one on each of the supports 1 on either side of the arch.
  • the movable ball joint 2 is mounted on the support 1 in a rotatable, spherical position that is immovable.
  • the specific structure may be a chain or a wire rope to bind the movable ball joint 2 to the support 1, or a deep ball socket may be directly disposed at the top of the support 1, and the movable ball joint 2 may be installed in the ball socket; Both of the movable ball joints 2 can be mounted on the top end of the support 1, and can be rotated but not detached from the support 1.
  • the other ball joints and tie rods on the female arch are sequentially installed starting from the active ball joint 2; when the ball joint and the tie rod are installed, the female that should be vertically extended upward in the air is installed.
  • the arch is extended laterally, so that it can be installed directly on the ground without the need to build scaffolding; of course, because the arch has a certain degree of curvature, the ground or construction platform will follow the development of the installation schedule and the lateral extension of the arch. Block the installation of the ball joints and tie rods.
  • the extension end of the female arch is appropriately raised by the lifting device 3, so that the height of the extended end is always suitable for the ground installation construction, and as the extended end is raised, the movable ball joint 2 is gradually rotated to the design angle.
  • Lifting equipment 3 can use a variety of cranes, cranes, hydraulic jacks, chain hoists and other equipment that can raise the height.
  • the position on the arch that is hung when lifting should be selected according to the principle of force, in the position where the force is most reasonable and the deformation is the smallest.
  • the ball joints symmetrically with the movable ball joint 2 are fixedly mounted on the support at the corresponding positions, and the entire female arch is installed; the installation of the female arch is completed.
  • the movable ball joint 2 can be fixedly connected to the support 1, usually by welding.
  • High-altitude cantilever construction is a commonly used construction method in the field and will not be described in detail herein.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)

Description

大跨度柱面网壳安装方法 技术领域
本发明涉及一种大跨度说柱面网壳结构的施工安装方法， 具体地说 是一种大跨度柱面网壳安装方法。
背景技术
热电厂干煤棚因倒煤机工艺需要静书跨度通常要达到 76米以上， 有的甚至超过 110米， 其净高度一般在 28米以上。 这种大跨度大高 度的封闭罩棚其科学经济合理的方案是采用柱面网壳结构，这已经经 过了数学、力学理论计算的验证。但其安装工艺一直在不断变换与探 讨中。采用不同的安装工艺将产生不同的费用和工期， 效果不同。传 统的施工工艺分为整体脚手架施工法和局部脚手架施工法，整体脚手 架施工法需要在整个柱面网壳覆盖的区域内搭建脚手架， 施工周期 长、 成本高； 局部脚手架施工法首先搭建脚手架安装一个环面， 然后 以这个环面为基础， 采用高空悬挑施工法将环面向两侧延长。局部脚 手架施工法由于只需要搭建部分脚手架， 有利于缩短施工周期、 降低 施工成本； 例如， 中国专利申请"一种筒壳型螺栓球节点网架高空悬 挑施工方法"， 专利申请号 200810231497. 2， 该专利申请就公开了这 样一种局部脚手架施工法。但即使是局部脚手架施工法也要搭建高度 相当于柱面网壳最高处的脚手架， 对于特大、 超高的柱面网壳， 施工 成本和施工的难度依然比较大。
发明内容
本发明提供一种大跨度柱面网壳安装方法， 无需搭建脚手架，利 用吊车做辅助工具， 简单实用， 可靠性高， 成本低， 工期短。
为实现上述目的， 本发明采用以下技术方案：
本发明所述的大跨度柱面网壳安装方法，其特征在于包括如下步 骤：
A) 结合支承情况将所述大跨度柱面网壳划分成多榀沿轴向排列 的网拱，所述每一网拱至少包括对称设置在两侧的四个支座以及安装 在所述四个支座上相互连接成网架状的球节和拉杆；首先安装一榀网 拱， 称为母拱， 在母拱任一侧的支座上各安装一个的活动球节， 然后 以这个活动球节为起点依次安装该母拱上的其他球节和拉杆；安装所 述球节和拉杆的时候， 将本应竖向高空延展安装的母拱横向延展安 装， 在母拱横向延展的过程中， 利用举升装备提升母拱的延展末端， 使延展末端的高度始终适合地面安装施工的要求；
B) 在上述母拱的所有球节和拉杆都连接完成以后， 将与活动球 节对称位置的球节固定安装在相应位置的支座上，至此整个母拱安装 完成； 母拱安装完成以后， 采用高空悬挑法施工，沿着母拱轴向伸展 推进， 依次安装与之邻近的其他网拱， 直到完成整个大跨度柱面网壳 的安装。
在安装母拱的过程中， 活动球节以可旋转、 球心位置不可移动的 方式安装在支座上， 在网拱安装完成以后， 整个大跨度柱面网壳安装 完成之前， 将活动球节与支座固定连接。
由于采用了上述技术方案， 该安装工艺无需搭建脚手架， 利用吊 车等举升装备做辅助工具， 简单实用， 可靠性高， 成本低， 工期短。 附图说明
图 1为本发明一种实施例的安装施工立面图；
图 2为母拱安装到一半时的安装施工立面图；
图 3为母拱安装到最后阶段的施工立面图；
图 4为母拱安装完成以后的立面图。
具体实施方式
如附图所示， 本发明所述的大跨度柱面网壳安装方法， 其特征 在于包括如下步骤：
A) 结合支承情况将所述大跨度柱面网壳划分成多榀沿轴向排列 的网拱，每一网拱带至少包括对称设置在两侧的四个支座 1以及安装 在所述四个支座 1上相互连接成网架状的球节和拉杆；首先安装一榀 网拱， 这个最先安装的网拱我们称之为母拱， 本实施例中的母拱的两 侧各有两个支座 1， 在母拱任一侧的支座 1上各安装一个的活动球节 2。活动球节 2以可旋转、球心位置不可移动的方式安装在支座 1上。 具体结构可以采用链条或者钢丝绳将活动球节 2捆绑在支座 1上，也 可以直接在支座 1的顶端设置较深的球窝，将活动球节 2安装在球窝 中； 上述两种方法都可以使活动球节 2安装在支座 1的顶端， 可以旋 转但是不会从支座 1上脱落。
安装好活动球节 2以后，以活动球节 2为起点依次安装该母拱上 的其他球节和拉杆； 安装所述球节和拉杆的时候， 将本应竖直向上向 空中延展安装的母拱横向延展安装， 这样可以直接在地面上安装施 工， 无需搭建脚手架； 当然， 由于母拱带有一定的弧度， 随着安装进 度的发展和母拱横向延展的过程中，地面或者施工平台就会阻碍球节 和拉杆的安装。 此时， 利用举升装备 3适当提升母拱的延展末端， 使 延展末端的高度始终适合地面安装施工的要求， 随着延展末端提升， 活动球节 2逐渐旋转到设计角度。举升装备 3可以采用各种吊车、行 吊、 液压千斤顶、 手拉葫芦等各种能够提升高度的设备。举升时吊挂 的母拱上的位置要根据受力原理， 选择在受力最合理、产生变形最小 的位置。
B) 在上述母拱的所有球节和拉杆都连接完成以后， 将与活动球 节 2对称位置的球节固定安装在相应位置的支座上，至此整个母拱安 装完成； 在母拱安装完成以后， 就可以将活动球节 2与支座 1固定连 接， 通常采用焊接的方法即可。母拱安装完成以后， 采用高空悬挑法 施工，沿着基础网架带轴向伸展推进，依次安装与之邻近的其他网拱， 直到完成整个大跨度柱面网壳的安装。
高空悬挑法施工是本领域常用的施工方法， 在此不再详细叙述。

Claims

权 利 要 求 书
1、 大跨度柱面网壳安装方法， 其特征在于包括如下步骤：
A) 结合支承情况将所述大跨度柱面网壳划分成多榀沿轴向排列 的网拱， 所述每一网拱至少包括对称设置在两侧的四个支座 （1 ) 以 及安装在所述四个支座 （1 ) 上相互连接成网架状的球节和拉杆； 首 先安装一榀网拱， 称为母拱， 在母拱任一侧的支座 （1 ) 上各安装一 个的活动球节 （2 )， 然后以这个活动球节 （2 ) 为起点依次安装该母 拱上的其他球节和拉杆； 安装所述球节和拉杆的时候， 将本应竖向高 空延展安装的母拱横向延展安装， 在母拱横向延展的过程中， 利用举 升装备 （3 ) 提升母拱的延展末端， 使延展末端的高度始终适合地面 安装施工的要求；
B) 在上述母拱的所有球节和拉杆都连接完成以后， 将与活动球 节 （2 ) 对称位置的球节固定安装在相应位置的支座上， 至此整个母 拱安装完成； 母拱安装完成以后， 采用高空悬挑法施工，沿着母拱轴 向伸展推进， 依次安装与之邻近的其他网拱， 直到完成整个大跨度柱 面网壳的安装。
2、 根据权利要求 1所述的大跨度柱面网壳安装方法， 其特征在于： 在安装母拱的过程中， 活动球节 （2 ) 以可旋转、 球心位置不可移动 的方式安装在支座 （1 ) 上， 在网拱安装完成以后， 整个大跨度柱面 网壳安装完成之前， 将活动球节 （2 ) 与支座 （1 ) 固定连接。
PCT/CN2010/076514 2009-11-20 2010-08-31 大跨度柱面网壳安装方法 WO2011060659A1 (zh)

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CN2009102239711A CN101718115B (zh) 2009-11-20 2009-11-20 大跨度柱面网壳安装方法
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