WO2011131106A1 - 薄壁钢纤维混凝土管 - Google Patents

薄壁钢纤维混凝土管 Download PDF

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Publication number
WO2011131106A1
WO2011131106A1 PCT/CN2011/072842 CN2011072842W WO2011131106A1 WO 2011131106 A1 WO2011131106 A1 WO 2011131106A1 CN 2011072842 W CN2011072842 W CN 2011072842W WO 2011131106 A1 WO2011131106 A1 WO 2011131106A1
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Prior art keywords
steel
fiber reinforced
reinforced concrete
wall
core
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PCT/CN2011/072842
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English (en)
French (fr)
Inventor
赵斌
张亮
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天津万联管道工程有限公司
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Publication of WO2011131106A1 publication Critical patent/WO2011131106A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • F16L9/153—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and concrete with or without reinforcement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
    • F16L25/0027—Joints for pipes made of reinforced concrete
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/08—Rigid pipes of concrete, cement, or asbestos cement, with or without reinforcement
    • F16L9/085—Reinforced pipes

Definitions

  • the invention relates to a concrete pipe, in particular to a thin-walled steel fiber concrete pipe.
  • patent name is "steel sleeve reinforced concrete pipe", patent number 200710059219.9, patent application number CN101373034 invention patent application, its structure mainly includes socket, socket, concrete core, steel frame, prestressed steel wire And a protective layer, the socket and the socket are respectively coaxially fixed on both ends of the concrete die, and the steel frame is coaxially embedded in the concrete core, and both ends of the steel frame are fixed on the socket and the socket, in the concrete
  • the outer wall of the die is fixed with a steel cylinder, the outer wall of the steel cylinder is fixed with a protective layer and a prestressed steel wire is wound on the outer wall of the steel cylinder between the steel cylinder and the protective layer; the wall thickness d of the concrete core and the inner diameter D of the core
  • the ratio is ⁇ , 1/32 ⁇ 1/16; the pitch of the prestressed steel wire is @ 111111, and the diameter of the prestressed steel wire is ⁇ ⁇ , 2 ⁇ @ 50.
  • the object of the present invention is to overcome the deficiencies of the prior art and provide a thin-walled steel fiber with low raw material cost, simple manufacturing process, high production efficiency, thin wall, light weight, good impermeability, and low transportation and construction cost. Concrete pipe.
  • a thin-walled steel fiber concrete pipe consisting of a socket, a socket, a steel fiber reinforced concrete core with a steel cylinder, a prestressed steel wire and a protective layer, and the socket and the socket are respectively coaxially fixed on the steel fiber concrete pipe with a steel cylinder
  • Both ends of the core, the outer wall of the steel fiber reinforced concrete core with the steel cylinder is fixed with a protective layer and is wound on the outer wall of the steel fiber reinforced concrete core with the steel cylinder between the steel fiber reinforced concrete core with the steel cylinder and the protective layer.
  • the steel fiber reinforced concrete core of the steel cylinder is composed of a steel cylinder and a steel fiber concrete core, the steel cylinder is coaxially embedded in the steel fiber concrete core or the steel cylinder is coaxially fixed on the steel fiber concrete pipe. On the outer wall of the core.
  • the steel cylinder is coaxially fixed on the outer wall of the steel fiber reinforced concrete core, and the prestressed steel wire is wound around the outer wall of the steel cylinder.
  • the outer wall of the socket is formed with 133 grooves in the radial direction.
  • the protective layer is cement mortar.
  • the thin-walled steel fiber concrete pipe is composed of a socket, a socket, a steel fiber reinforced concrete core with a steel cylinder, a prestressed steel wire and a protective layer, and a steel fiber concrete core wall thickness d of the steel cylinder and the inner diameter D of the core
  • the ratio is ⁇ , 1/32 ⁇ ⁇ ⁇ 1/16 ; and the steel fiber reinforced concrete core with steel cylinder is cast in one-time high-strength steel fiber concrete, and the pitch of the pre-stressed steel wire on the outer wall of the core is densely designed, which not only makes
  • the wall thickness of the whole concrete core is reduced to less than 1/16 of the inner diameter of the whole pipe, and the pipe weight is only 1/2 to 2/3 of the existing pipe of the same diameter, which greatly reduces the transportation cost and installation cost of the pipe.
  • the problem of lifting and transporting existing large-diameter pipes is difficult.
  • the steel fiber reinforced concrete core of the thin-walled steel fiber reinforced concrete pipe is composed of a steel cylinder and a steel fiber reinforced concrete core.
  • the steel cylinder is coaxially embedded in the steel fiber reinforced concrete core or the steel cylinder is coaxially fixed on the steel.
  • the structure can be adapted to different pipe diameters.
  • the pipe diameter is less than 1200mm
  • the steel cylinder can be coaxially fixed on the outer wall of the steel fiber concrete pipe.
  • the manufacturing process is simple and the workers are easy to operate.
  • the molding time of the finished product is short and the production efficiency is high.
  • the structure of the steel cylinder coaxially embedded in the steel fiber concrete core can be adopted, and the pipe has good stability and meets the needs of the large diameter pipe.
  • the thin-walled steel fiber concrete pipe adopts steel flexible socket structure, which has good joint water-tightness.
  • the outer wall of the socket has 1 to 3 grooves in the radial direction, and each groove is installed with corrosion-resistant sealing rubber ring to the two pipes.
  • the interface is sealed, the apron is easy to install, and the sealing of the entire pipeline can be ensured even when the whole tube is settled. Since the pipe wall is thin, the pipe itself is light in weight and is certain. The degree of resistance to uneven settlement is also improved.
  • the invention has the advantages of simple overall structure, scientific and reasonable design, low raw material cost, simple production process, high production efficiency, thin wall, light weight, good impermeability, and low cost steel fiber concrete pipe with low transportation and construction cost. Times DRAWINGS
  • Figure 1 is a schematic view of the structure of the present invention (the steel cylinder is coaxially fixed on the outer wall of the steel fiber reinforced concrete);
  • Figure 2 is an enlarged cross-sectional view taken along line A-A of Figure 1;
  • Figure 3 is an enlarged cross-sectional view taken along line B-B of Figure 1;
  • Figure 4 is a schematic view of another structure of the present invention (the steel cylinder is coaxially embedded in the steel fiber reinforced concrete core).
  • a thin-walled steel fiber concrete pipe consisting of a socket 7, a socket 1, a steel fiber reinforced concrete core with a steel cylinder, a prestressed steel wire 5, and a protective layer 6, the socket and the socket are made of steel, steel fiber with a steel cylinder
  • the concrete core consists of a steel cylinder 4 and a steel fiber reinforced concrete core 3, which is coaxially embedded in a steel fiber reinforced concrete core as shown in Fig. 4, or a steel cylinder coaxially fixed in a steel fiber reinforced concrete core.
  • the steel socket and the steel socket are respectively coaxially fixed on both ends of the steel fiber reinforced concrete core of the steel cylinder, that is, the steel socket and the steel socket can be coaxially welded.
  • the outer wall of the socket is provided with one or three grooves 2 in the radial direction.
  • the outer wall of the socket shown in FIG. 1 of the present embodiment has two grooves in the radial direction, and the pipe can be constructed during the process.
  • the sealing rubber rings are respectively set in the respective grooves for the closed water of the whole pipeline, the outer wall of the steel fiber reinforced concrete core with the steel cylinder is fixed with the protective layer and the steel fiber reinforced concrete core and the protective layer in the steel cylinder Steel fiber concrete between steel drums
  • the prestressed steel wire is wound on the outer wall of the core; the steel cylinder is coaxially fixed on the outer wall of the steel fiber concrete core, the prestressed steel wire is wound on the outer wall of the steel cylinder, the protective layer is cement mortar, and the steel fiber concrete core with steel cylinder
  • the ratio of the wall thickness d to the inner diameter D of the die is ⁇ , 1/32 ⁇ ⁇ ⁇ 1/16; the pitch of the prestressed steel wire is @mm, and the diameter of the prestressed steel wire is ⁇ ⁇ , 2 ⁇ @ 50.
  • the steel fiber reinforced concrete core of the invention is formed by one casting, and the pitch of the prestressed steel wire wrapped around the outer wall of the steel cylinder is relatively dense, and the entire concrete core wall thickness is reduced to the inner diameter of the whole pipe without using the steel skeleton. Below 1/16, and with the same physical properties, the pipe weight is only 1/2 to 2/3 of the existing pipe of the same diameter.
  • the existing PCCP pipe with a diameter of 3m and a length of 5m
  • the weight is about 28 tons
  • the total length of the pipe of the invention of the same caliber length is only about 17 tons, and the cost reduction is obvious whether in transportation, loading and unloading, or in pipeline construction.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Description

薄壁钢纤维混凝土管 技术领域
本发明涉及混凝土管， 尤其是一种薄壁钢纤维混凝土管。
的
背景技术
普通混凝土管由于要承受较强的外压荷载以及内水压力， 所以混凝土管芯壁设计 较厚， 经查到预应力钢筒混凝土管的国家标准 GB/T19685-2005 , 在该标准里有明确的 基本尺寸表， 表里最小管芯厚度均不小于管径的 1/16， 虽然能够满足输水的要求， 但 是随着原材料成本的提高以及国家节能减排政策的引导， 质量较重、 管体较大的普通 混凝土管很难满足要求。
经检索发现一专利名称为 《钢套筒钢筋混凝土管》， 专利号为 200710059219.9， 专利公告号为 CN101373034的发明专利申请， 其结构主要包括承口、 插口、 混凝土管 芯、 钢筋骨架、 预应力钢丝以及保护层， 承口与插口分别同轴固装在混凝土管芯的两 端， 钢筋骨架同轴嵌装在混凝土管芯内， 该钢筋骨架的两端固装在承口与插口上， 在 混凝土管芯外壁固装一钢筒， 该钢筒的外壁固装保护层且在钢筒与保护层之间的钢筒 外壁上缠绕预应力钢丝；混凝土管芯壁厚 d与该管芯内径 D的比值为 μ，1/32 μ 1/16; 预应力钢丝的螺距为@ 111111， 该预应力钢丝直径为 Φ ηιηι, 2 Φ @ 50， 这种普通混凝 土管虽然降低了混凝土管芯的厚度， 但是其中的钢筋骨架还是消耗大量的钢材， 成本 较高而且在制作上焊接工作量较大， 耗费时间较长， 生产效率较低。
的
发明内容
本发明的目的在于克服现有技术的不足， 提供一种原材料成本较低、 制作工艺简 单、 生产效率较高、 管壁薄、 重量轻、 抗渗性好、 运输和施工成本较低的薄壁钢纤维 混凝土管。
本发明解决其技术问题是通过以下技术方案实现的：
一种薄壁钢纤维混凝土管， 其由承口、 插口、 带钢筒的钢纤维混凝土管芯、 预应 力钢丝以及保护层构成， 承口与插口分别同轴固装在带钢筒的钢纤维混凝土管芯的两 端， 带钢筒的钢纤维混凝土管芯的外壁固装保护层且在带钢筒的钢纤维混凝土管芯与 保护层之间的带钢筒的钢纤维混凝土管芯外壁上缠绕预应力钢丝； 带钢筒的钢纤维混 凝土管芯壁厚 d与该管芯内径 D 的比值为 μ， 1/32< μ< 1/16 ; 预应力钢丝的螺距为 @mm， 该预应力钢丝直径为 Φ ηιηι, 2 Φ @ 50。
而且， 所述的带钢筒的钢纤维混凝土管芯由钢筒以及钢纤维混凝土管芯构成， 钢 筒同轴嵌装在钢纤维混凝土管芯内或者钢筒同轴固装在钢纤维混凝土管芯的外壁上。
而且， 所述的钢筒同轴固装在钢纤维混凝土管芯的外壁上， 预应力钢丝缠绕在钢 筒的外壁上。
而且， 所述的插口外壁径向上制有 1一 3个凹槽。
而且， 所述的保护层为水泥砂浆。
本发明的优点和有益效果为：
1、 本薄壁钢纤维混凝土管由承口、 插口、 带钢筒的钢纤维混凝土管芯、 预应力 钢丝以及保护层构成，带钢筒的钢纤维混凝土管芯壁厚 d与该管芯内径 D的比值为 μ， 1/32 < μ < 1/16 ; 且带钢筒的钢纤维混凝土管芯采用高强度钢纤维混凝土一次浇注成 型， 且管芯外壁的预应力钢丝的螺距设计较密， 不仅使整个混凝土管芯壁厚减少到整 管内径的 1/16 以下， 而且管材重量也仅为同口径现有管材的 1/2至 2/3， 大大地降低 了管材的运输成本和安装成本， 解决了现有大口径管材起重运输难的问题。
2、 本薄壁钢纤维混凝土管的带钢筒的钢纤维混凝土管芯由钢筒以及钢纤维混凝 土管芯构成， 钢筒同轴嵌装在钢纤维混凝土管芯内或者钢筒同轴固装在钢纤维混凝土 管芯的外壁上， 该种结构可以适应不同管径的制作， 当管径小于 1200mm可以采用钢 筒同轴固装在钢纤维混凝土管芯外壁的方式， 制作工艺简单， 工人操作方便， 成品成 型时间短， 生产效率高； 当管径大于 1200mm可以采用钢筒同轴嵌装在钢纤维混凝土 管芯内的结构， 管材稳定性好， 满足大口径管材的需要。
3、 本薄壁钢纤维混凝土管采用钢制柔性承插口结构， 具有良好的接头闭水性， 插口外壁径向上制有 1一 3个凹槽，每一个凹槽内通过安装耐腐蚀密封胶圈对两管之间 的接口进行密封， 该胶圈安装方便， 并且即使当该管整体发生沉降时， 也能保证整条 管线的密封性， 由于本管材管壁较薄， 管体自身重量较轻， 在一定程度上也提高了抵 抗不均匀沉降的能力。
4、 本发明整体结构简单、 设计科学合理， 原材料成本较低、 制作工艺简单、 生 产效率较高、 管壁薄、 重量轻、 抗渗性好， 运输和施工成本较低的薄壁钢纤维混凝土 管。 次 附图说明
图 1为本发明的结构示意图 （钢筒同轴固装在钢纤维混凝土的外壁上）； 图 2为图 1的 A-A向截面放大图；
图 3为图 1的 B-B向截面放大图；
图 4为本发明另一结构示意图 （钢筒同轴嵌装在钢纤维混凝土管芯内）。
具体实施方式
下面通过具体实施例对本发明作进一步详述， 以下实施例只是描述性的， 不是限 定性的， 不能以此限定本发明的保护范围。
一种薄壁钢纤维混凝土管， 其由承口 7、 插口 1、 带钢筒的钢纤维混凝土管芯、 预应力钢丝 5以及保护层 6构成， 承口以及插口为钢制， 带钢筒的钢纤维混凝土管芯 由钢筒 4以及钢纤维混凝土管芯 3构成， 钢筒同轴嵌装在钢纤维混凝土管芯内如附图 4所示， 或者钢筒同轴固装在钢纤维混凝土管芯的外壁上如附图 1所示， 钢制承口与 钢制插口分别同轴固装在带钢筒的钢纤维混凝土管芯的两端， 即钢制承口以及钢制承 口可以同轴焊接安装在钢筒的两端， 插口外壁径向上制有 1一 3个凹槽 2， 本实施例附 图 1所示的插口外壁径向上制有 2个凹槽， 本管材在施工过程中， 可以将密封胶圈分 别套装在各自的凹槽内， 用于整体管线的闭水， 带钢筒的钢纤维混凝土管芯的外壁固 装保护层且在带钢筒的钢纤维混凝土管芯与保护层之间的带钢筒的钢纤维混凝土管芯 外壁上缠绕预应力钢丝； 钢筒同轴固装在钢纤维混凝土管芯的外壁上， 预应力钢丝缠 绕在钢筒的外壁上， 保护层为水泥砂浆， 带钢筒的钢纤维混凝土管芯壁厚 d与该管芯 内径 D 的比值为 μ， 1/32< μ< 1/16; 预应力钢丝的螺距为 @mm， 该预应力钢丝直径 为 Φ ηιηι, 2 Φ @ 50。
具体实例：
1、 薄壁钢纤维混凝土管， 管内径 D: 1400 mm, 管芯壁厚 d: 47 mm, 预应力钢 丝直径 Φ : 5mm ， 预应力钢丝螺距@ : 10 111111。
2、 薄壁钢纤维混凝土管， 管内径 D: 2000 mm, 管芯壁厚 d: 80 mm, 预应力钢 丝直径 Φ : 6mm ， 预应力钢丝螺距@ : 14 111111。
3、 薄壁钢纤维混凝土管， 管内径 D : 2600 mm, 管芯壁厚 d: 130 mm, 预应力钢 丝直径 Φ : 7 mm ， 预应力钢丝螺距@ : 18111111。
4、 薄壁钢纤维混凝土管， 管内径 D : 3600 mm, 管芯壁厚 d: 200 mm, 预应力钢 丝直径 Φ : 8 mm, 预应力钢丝螺距@ :28111111。 本发明的钢纤维混凝土管芯为一次浇注成型， 并且该钢筒外壁缠绕的预应力钢丝 的螺距较密， 在不使用钢筋骨架的情况下， 不仅使整个混凝土管芯壁厚减少到整管内 径的 1/16以下， 而且在具有同样物理性能的情况下， 管材重量也仅为同口径现有管材 的 1/2至 2/3， 例如， 现有口径为 3m， 长度为 5m的 PCCP管道总重量大约为 28吨， 而同样口径长度的本发明管材总重量大约只有 17吨， 不论在运输、 装卸、 还是在管道 施工中， 成本的降低是显而易见的。

Claims

权利要求书
1、 一种薄壁钢纤维混凝土管， 其特征在于： 由承口、 插口、 带钢筒的钢纤维混 凝土管芯、 预应力钢丝以及保护层构成， 承口与插口分别同轴固装在带钢筒的钢纤维 混凝土管芯的两端， 带钢筒的钢纤维混凝土管芯的外壁固装保护层且在带钢筒的钢纤 维混凝土管芯与保护层之间的带钢筒的钢纤维混凝土管芯外壁上缠绕预应力钢丝； 带 钢筒的钢纤维混凝土管芯壁厚 d与该管芯内径 D的比值为 μ， 1/32< μ< 1/16; 预应力 钢丝的螺距为@ 111111， 该预应力钢丝直径为 Φ ηιηι, 2 Φ @ 50。
2、 根据权利要求 1 所述的薄壁钢纤维混凝土管， 其特征在于： 所述的带钢筒的 钢纤维混凝土管芯由钢筒以及钢纤维混凝土管芯构成， 钢筒同轴嵌装在钢纤维混凝土 管芯内或者钢筒同轴固装在钢纤维混凝土管芯的外壁上。
3、 根据权利要求 2 所述的薄壁钢纤维混凝土管， 其特征在于： 所述的钢筒同轴 固装在钢纤维混凝土管芯的外壁上， 预应力钢丝缠绕在钢筒的外壁上。
4、 根据权利要求 1 所述的薄壁钢纤维混凝土管， 其特征在于： 所述的插口外壁 径向上制有 1一 3个凹槽。
5、 根据权利要求 1 所述的薄壁钢纤维混凝土管， 其特征在于： 所述的保护层为 水泥砂浆。
PCT/CN2011/072842 2010-04-23 2011-04-15 薄壁钢纤维混凝土管 WO2011131106A1 (zh)

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