CN207830757U - Using the steel production route of CHARACTERISTICS OF TAILINGS SAND PVA fiber cement composites outsourcings - Google Patents
Using the steel production route of CHARACTERISTICS OF TAILINGS SAND PVA fiber cement composites outsourcings Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 136
- 239000010959 steel Substances 0.000 title claims abstract description 136
- 239000000835 fiber Substances 0.000 title claims abstract description 57
- 239000004568 cement Substances 0.000 title claims abstract description 53
- 239000004576 sand Substances 0.000 title claims abstract description 51
- 239000002131 composite material Substances 0.000 title claims abstract description 49
- 238000012946 outsourcing Methods 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 239000004567 concrete Substances 0.000 claims abstract description 73
- 230000002787 reinforcement Effects 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims description 60
- 239000011241 protective layer Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 230000015271 coagulation Effects 0.000 claims 3
- 238000005345 coagulation Methods 0.000 claims 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 5
- 239000011707 mineral Substances 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 36
- 229920002451 polyvinyl alcohol Polymers 0.000 description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 238000010276 construction Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 239000004566 building material Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920002978 Vinylon Polymers 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000011469 building brick Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
一种采用尾矿砂PVA纤维水泥基复合材料外包的钢筒混凝土管道,该管道包括尾矿砂PVA纤维水泥基复合材料层、钢筒、混凝土层和钢筋笼；钢筒的内外壁均设置混凝土层，钢筒外壁的混凝土层的外壁设置有尾矿砂PVA纤维水泥基复合材料层，钢筋笼设置在尾矿砂PVA纤维水泥基复合材料层与钢筒之间的混凝土层中布置钢筋笼。钢筒上有呈梅花型布置的圆孔，该圆孔使钢筒内外壁混凝土相互连接形成整体，加强了管道的承载力，同时通过钢筒来承受内压荷载，提高抗内压性能；尾矿砂替代部分天然砂，降低成本的同时又满足性能要求，体现经济环保的特点。
A steel cylinder concrete pipeline using tailings sand PVA fiber cement-based composite material outsourcing, the pipeline includes a tailings sand PVA fiber cement-based composite material layer, a steel cylinder, a concrete layer and a steel cage; the inner and outer walls of the steel cylinder are provided with a concrete layer, The outer wall of the concrete layer on the outer wall of the steel cylinder is provided with a tailings sand PVA fiber cement-based composite material layer, and the reinforcement cage is arranged in the concrete layer between the tailings sand PVA fiber cement-based composite material layer and the steel cylinder. There are round holes arranged in a plum blossom pattern on the steel cylinder. The round holes connect the inner and outer walls of the steel cylinder to form a whole, which strengthens the bearing capacity of the pipeline. At the same time, the steel cylinder is used to bear the internal pressure load and improve the internal pressure resistance; Mineral sand replaces part of natural sand, reducing costs while meeting performance requirements, reflecting the characteristics of economical and environmental protection.
Description
技术领域technical field
本实用新型属于混凝土管道技术领域，涉及一种用于顶进施工的大口径钢筒混凝土管道，特别涉及一种采用尾矿砂PVA纤维水泥基复合材料外包的钢筒混凝土管道。The utility model belongs to the technical field of concrete pipelines, and relates to a large-caliber steel cylinder concrete pipeline used for jacking construction, in particular to a steel cylinder concrete pipeline which is outsourced with tailing sand PVA fiber cement-based composite materials.
背景技术Background technique
PVA纤维也称维纶纤维，是以聚乙烯醇为原料，采用新型纺丝工业加工而成的一种合成纤维，其主要特点是高强度、高弹模、耐磨、抗酸碱好，与水泥石膏等基材有良好的黏结性，且无毒无害等，属于绿色建筑材料。目前，PVA纤维水泥复合基材料凭借着优越的力学性能和简便的施工工艺，已经在美国、瑞士、日本等国家的实际工程中得到应用，并取得了显著的成效。PVA纤维水泥复合基材料主要应用于抗震结构、桥梁结构、公路及各种混凝土结构修复方面。PVA fiber, also known as vinylon fiber, is a synthetic fiber made of polyvinyl alcohol as raw material and processed by the new spinning industry. Its main features are high strength, high elastic modulus, wear resistance, good acid and alkali resistance, and cement Base materials such as gypsum have good adhesion, and are non-toxic and harmless, and belong to green building materials. At present, PVA fiber cement composite base material has been applied in actual projects in the United States, Switzerland, Japan and other countries by virtue of its superior mechanical properties and simple construction technology, and has achieved remarkable results. PVA fiber cement composite matrix materials are mainly used in the repair of earthquake-resistant structures, bridge structures, roads and various concrete structures.
我国是一个矿业大国，而且绝大多数能源及原材料均来自矿产资源，目前我国尾矿砂的累积量达到110亿吨以上，伴随着基础建设的不断扩大，铁矿石的需求日益增加，同时也产生大量的废弃物，对生态环境造成不可估量的严重破坏，并且威胁着人们日常生活和生产。我国从20世纪80年代开始开始加强铁尾矿砂的综合利用和管理。鉴于环境保护和就业等利民问题，一些企业重视铁尾矿砂资源的开发利用并且取得了实质性的效果，尾矿砂主要用作矿井的填充料，土壤的改良剂，建筑材料等方面。我国目前关于铁尾矿砂在建筑材料的应用主要在于：用作生产水泥熟料；用铁尾矿制备工艺品和建筑用砖；生产预制的混凝上砌块等方面。my country is a big mining country, and the vast majority of energy and raw materials come from mineral resources. At present, the cumulative amount of tailings in my country has reached more than 11 billion tons. With the continuous expansion of infrastructure, the demand for iron ore is increasing. At the same time, there are also A large amount of waste has caused immeasurable serious damage to the ecological environment and threatened people's daily life and production. my country began to strengthen the comprehensive utilization and management of iron tailings from the 1980s. In view of environmental protection and employment and other benefits to the people, some enterprises attach importance to the development and utilization of iron tailings resources and have achieved substantial results. Tailings are mainly used as mine filling materials, soil improvers, building materials, etc. At present, the application of iron tailings in building materials in my country mainly lies in: the production of cement clinker; the preparation of handicrafts and building bricks with iron tailings; the production of prefabricated concrete blocks and so on.
钢筒混凝土管道是市政工程排水管道的一种主要构件，在城市排水管网建设上使用较广。该管道具备了各种组合材料的优势，例如钢筒具有抗拉、抗渗性能；钢筋具有抗拉能；混凝土具有抗压、耐磨蚀的特点，从而大大地提高了钢筒混凝土管道承载能力。但传统的钢筒混凝土管道也有其自身的缺陷，包括外层砂浆保护层容易开裂，且开裂后有可能发生剥落，使钢筋暴露在外部环境中，最终导致钢筋被腐蚀从而严重危害管道的耐久性和可靠运行能力，降低管道的使用寿命，而且管道一旦出现安全事故将产生巨大的经济损失同时也会造成不良的社会影响。Steel cylinder concrete pipe is a main component of municipal engineering drainage pipe, and it is widely used in the construction of urban drainage pipe network. The pipeline has the advantages of various combined materials, such as the steel cylinder has tensile and impermeability properties; steel bars have tensile properties; concrete has the characteristics of compression and corrosion resistance, thus greatly improving the bearing capacity of steel cylinder concrete pipelines . However, the traditional steel cylinder concrete pipeline also has its own defects, including the outer layer of mortar protection layer is easy to crack, and may peel off after cracking, so that the steel bars are exposed to the external environment, which eventually leads to corrosion of the steel bars and seriously endangers the durability of the pipeline And reliable operation ability, reducing the service life of the pipeline, and once a safety accident occurs in the pipeline, it will cause huge economic losses and also cause adverse social impacts.
发明内容Contents of the invention
发明目的：本实用新型提供一种采用尾矿砂PVA纤维水泥基复合材料外包的钢筒混凝土管道，其目的是解决以往所存在的问题。Purpose of the invention: The utility model provides a steel cylinder concrete pipeline that is outsourced with tailings sand PVA fiber cement-based composite material, and its purpose is to solve the existing problems in the past.
技术方案：Technical solutions:
一种采用尾矿砂PVA纤维水泥基复合材料外包的钢筒混凝土管道,其特征在于:该管道包括尾矿砂PVA纤维水泥基复合材料层、钢筒、混凝土层和钢筋笼；钢筒的内外壁均设置混凝土层，钢筒外壁的混凝土层的外壁设置有尾矿砂PVA纤维水泥基复合材料层，钢筋笼设置在尾矿砂PVA纤维水泥基复合材料层与钢筒之间的混凝土层中布置钢筋笼。A steel cylinder concrete pipeline using tailings sand PVA fiber cement-based composite material outsourcing, characterized in that: the pipeline includes a tailings sand PVA fiber cement-based composite material layer, a steel cylinder, a concrete layer and a steel cage; the inner and outer walls of the steel cylinder are uniform A concrete layer is set, the outer wall of the concrete layer on the outer wall of the steel cylinder is provided with a tailings sand PVA fiber cement-based composite material layer, and the reinforcement cage is arranged in the concrete layer between the tailings sand PVA fiber cement-based composite material layer and the steel cylinder.
钢筒的两端分别设置有插口钢环和承口钢环；钢筒内壁的混凝土层与钢筒外壁的混凝土层之间沿钢筒轴向相互错开，使得插口钢环外壁凸出于钢筒外壁的混凝土层（即钢筒外壁部分或全部没有混凝土层而只有内壁有混凝土层）形成外凸插座，同时，承口钢环凸出于钢筒内壁的混凝土层形成内凹接口（即承口钢环内壁全部或部分没有混凝土层，只有外壁有混凝土层），使用时，一个管道通过外凸插座插进相邻的另一个管道的内凹接口内，即插口钢环插进承口钢环内形成衔接。The two ends of the steel cylinder are respectively provided with a socket steel ring and a socket steel ring; the concrete layer on the inner wall of the steel cylinder and the concrete layer on the outer wall of the steel cylinder are staggered along the axial direction of the steel cylinder, so that the outer wall of the socket steel ring protrudes from the steel cylinder The concrete layer of the outer wall (that is, part or all of the outer wall of the steel cylinder has no concrete layer and only the inner wall has a concrete layer) forms a convex socket, and at the same time, the socket steel ring protrudes from the concrete layer of the inner wall of the steel cylinder to form a concave interface (that is, the socket All or part of the inner wall of the steel ring has no concrete layer, only the outer wall has a concrete layer). internal connection.
钢筒上有呈梅花型布置的圆孔，钢筒内壁和外壁的混凝土层通过该圆孔连接成一体。There are round holes arranged in a quincunx pattern on the steel cylinder, and the concrete layers of the inner wall and the outer wall of the steel cylinder are connected into one body through the round holes.
圆孔孔径采用25mm以上，圆孔间距采用5倍孔径。The diameter of the round hole is more than 25mm, and the distance between the round holes is 5 times the diameter.
矿砂PVA纤维水泥基复合材料保护层的厚度采用25mm~35mm。The thickness of the protective layer of mineral sand PVA fiber cement-based composite material is 25mm~35mm.
由尾矿砂PVA纤维水泥基复合材料层、钢筒、混凝土层和钢筋笼形成的管道的壁的壁厚为整个管道外径的1/12~1/15。The wall thickness of the pipeline formed by the tailings sand PVA fiber cement-based composite material layer, the steel cylinder, the concrete layer and the steel cage is 1/12 to 1/15 of the outer diameter of the entire pipeline.
尾矿砂PVA纤维水泥基复合材料1外侧壁的两端部固定有加强钢环。Both ends of the outer wall of the tailings sand PVA fiber cement-based composite material 1 are fixed with reinforcing steel rings.
优点效果：Advantages and effects:
本实用新型提供一种采用尾矿砂PVA纤维水泥基复合材料外包的钢筒混凝土管道，本实用新型采用尾矿砂PVA纤维水泥基复合材料外包的钢筒混凝土管道，其由钢筒、混凝土、钢筋笼、插口钢环、承口钢环、加强钢环和尾矿砂PVA纤维水泥基复合材料组合而成，钢筒嵌埋在混凝土管芯内，钢筋笼位于外层混凝土层中，所述插口钢环和承口钢环分别焊接在钢筒两端，所述加强钢环安装在尾矿砂PVA纤维水泥基复合材料两端，所述尾矿砂PVA纤维水泥基复合材料位于混凝土外侧。The utility model provides a steel cylinder concrete pipeline outsourced by tailing sand PVA fiber cement-based composite material. The utility model adopts a steel cylinder concrete pipeline outsourced by tailing sand PVA fiber cement-based composite material. , socket steel ring, socket steel ring, reinforced steel ring and tailings sand PVA fiber cement-based composite material, the steel cylinder is embedded in the concrete tube core, the steel cage is located in the outer concrete layer, and the socket steel ring The socket steel ring and socket steel ring are respectively welded at both ends of the steel cylinder, the reinforcing steel ring is installed at both ends of the tailings sand PVA fiber cement-based composite material, and the tailings sand PVA fiber cement-based composite material is located outside the concrete.
其属于针对上述普通钢筒混凝土管道的保护层存在的抗裂性能不好、耐久性及抗腐蚀性较差等缺陷，结合尾矿砂PVA纤维水泥基复合材料的优点，形成的一种采用尾矿砂PVA纤维水泥基复合材料外包的钢筒混凝土管道，其提高增强抗裂和抗腐蚀性能，延长了管道使用寿命。It belongs to the defects of poor crack resistance, poor durability and corrosion resistance of the protective layer of the above-mentioned ordinary steel tube concrete pipeline, combined with the advantages of tailings sand PVA fiber cement-based composite materials, a kind of tailings sand is formed. The steel tube concrete pipeline covered with PVA fiber cement-based composite material can improve crack resistance and corrosion resistance, and prolong the service life of the pipeline.
本实用新型提供的采用尾矿砂PVA纤维水泥基复合材料外包的钢筒混凝土管道，尾矿砂PVA纤维水泥基复合材料在受拉的情况下表现出优良的延展性，为多点开裂，且裂缝的宽度不会出现明显的增大，具有良好的延性及抗裂缝性能；制作尾矿砂PVA纤维水泥基复合材料保护层可采用辊射法、喷涂法或其他有效方法均可，无需进行特殊方法处理，便于施工；The steel cylinder concrete pipeline provided by the utility model adopts tailings sand PVA fiber cement-based composite material outsourcing. The tailings sand PVA fiber cement-based composite material shows excellent ductility under tension, and is multi-point cracking, and the cracks The width will not increase significantly, and it has good ductility and crack resistance; the protective layer of the tailings sand PVA fiber cement-based composite material can be made by roller jetting, spraying or other effective methods, and no special treatment is required. Ease of construction;
PVA纤维具有高强度、高弹模、耐磨、抗酸碱好等特点，与水泥、石膏等基材有良好的黏结性，且无污染，对人体无害；PVA纤维的价格比聚乙烯纤维更低，而且它比其它低价纤维，如聚丙烯纤维、尼龙等，拥有更高抗拉强度和弹性模量；PVA fiber has the characteristics of high strength, high elastic modulus, wear resistance, and good acid and alkali resistance. It has good adhesion to cement, gypsum and other substrates, and is non-polluting and harmless to the human body; the price of PVA fiber is lower than that of polyethylene fiber. Lower, and it has higher tensile strength and elastic modulus than other low-priced fibers, such as polypropylene fibers, nylon, etc.;
钢筒上有呈梅花型布置的圆孔，该圆孔使钢筒内外壁混凝土相互连接形成整体，加强了管道的承载力，同时通过钢筒来承受内压荷载，提高抗内压性能；尾矿砂替代部分天然砂，降低成本的同时又满足性能要求，体现经济环保的特点；结合传统钢筒混凝土管道和PVA纤维尾矿砂水泥基复合材料的优点，通过二者相互作用，提高钢筒混凝土管道的耐久性、承载力、抗裂缝、抗腐蚀性能，且成本合理，施工简便等诸多优点。There are round holes arranged in a plum blossom shape on the steel cylinder. The round holes connect the inner and outer walls of the steel cylinder to form a whole, which strengthens the bearing capacity of the pipeline. At the same time, the steel cylinder is used to bear the internal pressure load and improve the internal pressure resistance; Mineral sand replaces part of natural sand, reducing costs while meeting performance requirements, reflecting the characteristics of economic and environmental protection; combining the advantages of traditional steel tube concrete pipes and PVA fiber tailings sand cement-based composite materials, through the interaction of the two, the improvement of steel tube concrete pipelines Excellent durability, bearing capacity, crack resistance, corrosion resistance, reasonable cost, easy construction and many other advantages.
附图说明：Description of drawings:
图1为本实用新型的结构示意图。Fig. 1 is the structural representation of the utility model.
图2为本实用新型A-A剖面图示意图。Fig. 2 is the schematic diagram of A-A sectional view of the utility model.
图3为本实用新型圆孔梅花型布置示意图。Fig. 3 is a schematic diagram of the plum blossom arrangement of the round holes of the present invention.
具体实施方式：Detailed ways:
本实用新型提供一种采用尾矿砂PVA纤维水泥基复合材料外包的钢筒混凝土管道,该管道包括尾矿砂PVA纤维水泥基复合材料层1、钢筒2、混凝土层和钢筋笼4；钢筒2的内外壁均设置混凝土层，钢筒2外壁的混凝土层的外壁设置有尾矿砂PVA纤维水泥基复合材料层1，钢筋笼4设置在尾矿砂PVA纤维水泥基复合材料层1与钢筒2之间的混凝土层中布置钢筋笼4。所述尾矿砂PVA纤维水泥基复合材料1作为保护层。The utility model provides a steel cylinder concrete pipeline which adopts tailings sand PVA fiber cement-based composite material outsourcing, and the pipeline comprises a tailings sand PVA fiber cement-based composite material layer 1, a steel cylinder 2, a concrete layer and a steel cage 4; the steel cylinder 2 Both the inner and outer walls of the steel cylinder 2 are provided with a concrete layer, the outer wall of the concrete layer on the outer wall of the steel cylinder 2 is provided with a tailings sand PVA fiber cement-based composite material layer 1, and the steel cage 4 is arranged between the tailings sand PVA fiber cement-based composite material layer 1 and the steel cylinder 2 Arrange reinforcement cage 4 in the concrete layer between. The tailings sand PVA fiber cement-based composite material 1 is used as a protective layer.
钢筒2的两端分别设置有插口钢环5和承口钢环6；钢筒2内壁的混凝土层与钢筒2外壁的混凝土层之间沿钢筒2轴向相互错开，使得插口钢环5外壁凸出于钢筒2外壁的混凝土层（即钢筒2外壁部分或全部没有混凝土层而只有内壁有混凝土层）形成外凸插座，同时，承口钢环6凸出于钢筒2内壁的混凝土层形成内凹接口（即承口钢环6内壁全部或部分没有混凝土层，只有外壁有混凝土层），使用时，一个管道通过外凸插座插进相邻的另一个管道的内凹接口内，即插口钢环5插进承口钢环6内形成衔接。The two ends of the steel cylinder 2 are respectively provided with a socket steel ring 5 and a socket steel ring 6; the concrete layer on the inner wall of the steel cylinder 2 and the concrete layer on the outer wall of the steel cylinder 2 are staggered from each other along the axial direction of the steel cylinder 2, so that the socket steel ring 5 The outer wall protrudes from the concrete layer on the outer wall of the steel cylinder 2 (that is, part or all of the outer wall of the steel cylinder 2 has no concrete layer and only the inner wall has a concrete layer) to form a convex socket, and at the same time, the socket steel ring 6 protrudes from the inner wall of the steel cylinder 2 The concrete layer forms a concave interface (that is, all or part of the inner wall of the socket steel ring 6 has no concrete layer, and only the outer wall has a concrete layer). When in use, a pipe is inserted into the concave interface of another adjacent pipe through a convex socket. Inside, that is, the socket steel ring 5 is inserted into the socket steel ring 6 to form a connection.
钢筒2上有呈梅花型布置的圆孔，钢筒2内壁和外壁的混凝土层通过该圆孔连接成一体。The steel cylinder 2 has circular holes arranged in a quincunx pattern, and the concrete layers of the inner wall and the outer wall of the steel cylinder 2 are connected into one body through the circular holes.
圆孔孔径采用25mm以上，圆孔间距采用5倍孔径。The diameter of the round hole is more than 25mm, and the distance between the round holes is 5 times the diameter.
矿砂PVA纤维水泥基复合材料1保护层的厚度采用25mm~35mm。The thickness of the protective layer of mineral sand PVA fiber cement-based composite material 1 is 25mm~35mm.
由尾矿砂PVA纤维水泥基复合材料层1、钢筒2、混凝土层和钢筋笼4形成的管道的壁的壁厚为整个管道外径的1/12~1/15。The wall thickness of the pipeline formed by the tailings sand PVA fiber cement-based composite material layer 1, the steel cylinder 2, the concrete layer and the steel cage 4 is 1/12-1/15 of the outer diameter of the entire pipeline.
综上，管道由钢筒2、混凝土层3、钢筋笼4、插口钢环5、承口钢环6、加强钢环7和尾矿砂PVA纤维水泥基复合材料1共同构成整体，钢筒2与插口钢环5和承口钢环6焊接为一体，钢筒2上有呈梅花型布置的圆孔，使钢筒2内外壁上的混凝土层3相互连接，形成整体共同承受荷载，圆孔孔径采用25mm以上，圆孔间距采用5倍孔径，钢筒2可承受内压荷载，提高抗内压性能；插口钢环5与承口钢环6位于混凝土层3两端外侧，钢筋笼4在浇注混凝土层3时与钢筒2之间留有一定距离，管道在工作时可以将承受的荷载均匀分散到钢筒2、混凝土层3管芯和钢筋笼4中，通过调整钢筒的厚度或者调整混凝土的配筋量来满足工况要求；在浇注混凝土层3的同时进行振捣，便于混凝土层3的密实，之后采用蒸汽养护，养护到规定强度后脱模；对混凝土管外表面进行打磨处理，尾矿砂PVA纤维水泥基复合材料1喷涂在混凝土管外侧作为保护层，能有效的抑制保护层裂纹的产生及开裂，从而对管道起到良好的保护作用，在尾矿砂PVA纤维水泥基复合材料1外侧壁的两端部固定有加强钢环7，可以提高管道的抗轴向推力性能。In summary, the pipeline is composed of steel cylinder 2, concrete layer 3, steel cage 4, socket steel ring 5, socket steel ring 6, reinforced steel ring 7 and tailings sand PVA fiber cement-based composite material 1. Steel cylinder 2 and The socket steel ring 5 and the socket steel ring 6 are welded as one, and the steel cylinder 2 has round holes arranged in a plum blossom shape, so that the concrete layers 3 on the inner and outer walls of the steel cylinder 2 are connected to each other, forming a whole to bear the load together, and the diameter of the round holes is It adopts more than 25mm, and the distance between round holes adopts 5 times the hole diameter. The steel cylinder 2 can bear the internal pressure load and improve the internal pressure resistance; the socket steel ring 5 and the socket steel ring 6 are located outside the two ends of the concrete layer 3, and the steel cage 4 is pouring There is a certain distance between the concrete layer 3 and the steel cylinder 2, and the pipeline can evenly distribute the load to the steel cylinder 2, the concrete layer 3 core and the steel cage 4 during operation. By adjusting the thickness of the steel cylinder or adjusting The amount of concrete reinforcement to meet the requirements of the working conditions; vibrate while pouring the concrete layer 3 to facilitate the compaction of the concrete layer 3, and then use steam curing to demould after curing to the specified strength; grind the outer surface of the concrete pipe , tailings sand PVA fiber cement-based composite material 1 is sprayed on the outside of the concrete pipe as a protective layer, which can effectively inhibit the generation and cracking of protective layer cracks, thereby playing a good role in protecting the pipeline. In the tailings sand PVA fiber cement-based composite material 1 The two ends of the outer wall are fixed with reinforced steel rings 7, which can improve the axial thrust resistance of the pipeline.
Claims (7)
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