WO2022121407A1 - Ultra-high performance concrete assembly-type light and thin prefabricated staircase and assembly process therefor - Google Patents
Ultra-high performance concrete assembly-type light and thin prefabricated staircase and assembly process therefor Download PDFInfo
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- WO2022121407A1 WO2022121407A1 PCT/CN2021/117347 CN2021117347W WO2022121407A1 WO 2022121407 A1 WO2022121407 A1 WO 2022121407A1 CN 2021117347 W CN2021117347 W CN 2021117347W WO 2022121407 A1 WO2022121407 A1 WO 2022121407A1
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- performance concrete
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- 239000011374 ultra-high-performance concrete Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 239000010881 fly ash Substances 0.000 claims description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 4
- 239000011325 microbead Substances 0.000 claims description 4
- 239000011707 mineral Substances 0.000 claims description 4
- 229910021487 silica fume Inorganic materials 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 7
- 239000002002 slurry Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F11/022—Stairways; Layouts thereof characterised by the supporting structure
- E04F11/035—Stairways consisting of a plurality of assembled modular parts without further support
Definitions
- the invention relates to the technical field of building construction, in particular to an ultra-high-performance concrete assembled light and thin prefabricated staircase and an assembly process thereof.
- Construction industrialization is an important way to improve labor efficiency and construction quality, and it is also the development direction of my country's future construction industry. As one of the representatives of construction industrialization, the state and local governments have issued a series of policies to promote its high-quality and rapid development. A large number of building parts of prefabricated buildings are produced and processed in workshops, which can improve production efficiency and save energy and protect the environment.
- Prefabricated stairs are widely used in prefabricated buildings in the context of building industrialization.
- the reinforced concrete stairs built in accordance with the current prefabricated staircase atlas and standards in my country are too heavy and consume a lot of materials, resulting in high cost, and the large size of the mold is not flexible to adjust, and it is difficult to transport and hoist.
- the present invention aims to provide an ultra-high-performance concrete assembled light and thin prefabricated staircase and an assembly process thereof.
- an ultra-high-performance concrete fabricated light and thin prefabricated staircase comprising steps, platforms, ladder beams and connecting parts
- the prefabricated staircase is made of ultra-high-performance concrete
- the steps, platforms, ladder beams and connecting parts All are prefabricated parts
- the prefabricated stairs are made by assembling and connecting.
- the structural form of the step is any one of L-shaped, Z-shaped, flat-plate and wave-shaped; the platform is an L-shaped thin plate or a flat-shaped thin plate; the structural form of the ladder beam is a rectangular solid beam , any one of rectangular hollow beam and sawtooth beam.
- the height-to-length ratio of the steps is 0.02-0.05.
- an anti-skid groove is provided on the upper surface of the step and/or the platform.
- the upper surface of the step and/or the platform is provided with a railing fixing pile.
- the steps, platforms and ladder beams are provided with reserved holes, and the connecting components are any one of bolts, reserved inclined rods and reserved steel bars.
- steel bars, I-beams or steel pipes are built into the steps, platforms and ladder beams.
- the physical and mechanical performance indicators of the ultra-high performance concrete are compressive strength greater than or equal to 120MPa, flexural strength greater than or equal to 12MPa, axial tensile strength greater than or equal to 5MPa, elastic modulus under static compression greater than or equal to 40GPa, poise
- the loose ratio is 0.19-0.24.
- the ultra-high performance concrete includes the following components: 1 part of cement, 0.1-0.3 part of mineral powder, 0.1-0.3 part of fly ash microbeads, 0.1-0.25 part of silica fume, and 0.005-0.025 part of nano-silica , 1.5-2.0 part of fine aggregate, 0.2-0.35 part of steel fiber, 0.015-0.03 part of admixture, 0.22-0.32 part of water.
- an assembly process of ultra-high-performance concrete prefabricated light and thin prefabricated stairs includes the following steps: preparing ultra-high-performance concrete; preparing a mold, and pouring steps, platforms and ladder beams independently;
- the ladder beams are connected through the connecting parts by means of bolts, welding or wet seams corresponding to the connecting parts.
- the invention has a simple structure, and proposes a design scheme in which steps, platforms, ladder beams and connecting parts can be prefabricated separately, so that the stair parts can be transported to the construction site before being assembled, and the transportation of traditional prefabricated stairs with heavy weight and large volume is solved.
- the problem of inconvenience it also solves the problem of inflexible adjustment of the large size of the stair mold; using the ultra-high strength, ultra-high toughness and ultra-high durability of ultra-high performance concrete, under the premise of meeting the bearing capacity of the stair and normal use conditions, reduce The section size of the stair components is reduced to reduce the weight and cost.
- FIG. 1 is a schematic structural diagram of an embodiment of an ultra-high performance concrete assembled light and thin prefabricated staircase of the present invention
- Fig. 2 is the structural representation of step in the embodiment of Fig. 1;
- Fig. 3 is the structural representation of the platform in the embodiment of Fig. 1;
- FIG. 4 is a schematic structural diagram of another embodiment of the ultra-high-performance concrete assembled light and thin prefabricated staircase of the present invention.
- Fig. 5 is the partial structure schematic diagram of step and ladder beam in the embodiment of Fig. 4;
- FIG. 6 is a schematic structural diagram of the platform in the embodiment of FIG. 4 .
- Labels in the figure 1-step, 2-platform, 3-ladder beam, 4-connecting part, 5-anti-skid groove, 6-railing fixed pile, 7-connecting hole.
- the present invention provides an ultra-high-performance concrete assembled light and thin prefabricated staircase, comprising steps 1 , platforms 2 , ladder beams 3 and connecting parts 4 , and the prefabricated staircase is made of ultra-high-performance concrete
- the steps 1, the platform 2, the ladder beams 3 and the connecting parts 4 are all prefabricated parts, and the prefabricated stairs are made by assembling and connecting.
- the amount of concrete can be reduced, thereby reducing the self-weight of the stairs;
- All prefabricated parts and connecting parts are set as prefabricated parts, and each prefabricated part can be transported to the construction site before being assembled, which solves the problems of traditional prefabricated stairs that are self-heavy and bulky and inconvenient to transport, and also solves the problem that the size of the stair mold is large and inflexible to adjust. The problem.
- the structural form of the step 1 is any one of L-shaped, Z-shaped, flat-shaped and wave-shaped;
- the platform 2 is an L-shaped sheet or a flat-shaped sheet;
- the structural form of 3 is any one of a rectangular solid beam, a rectangular hollow beam and a sawtooth beam;
- the step 1, the platform 2 and the ladder beam 3 are provided with reserved holes, and the connecting member 4 is a bolt, a reserved oblique rod. and any of the reserved steel bars.
- the height-to-length ratio of the step 1 is 0.02-0.05, and the upper surface of the step 1 and/or the platform 2 is provided with an anti-slip groove 5 and a railing fixing pile 6 .
- the physical and mechanical performance indicators of the ultra-high performance concrete are compressive strength greater than or equal to 120 MPa, flexural strength greater than or equal to 12 MPa, axial tensile strength greater than or equal to 5 MPa, and elastic modulus under static compression. Greater than or equal to 40GPa, Poisson's ratio is 0.19-0.24.
- the ultra-high performance concrete includes the following components: 1 part of cement, 0.1-0.3 part of mineral powder, 0.1-0.3 part of fly ash microbeads, 0.1-0.25 part of silica fume, and 0.005-0.025 part of nano-silica parts, fine aggregate 1.5-2.0 parts, steel fiber 0.2-0.35 parts, admixtures 0.015-0.03 parts, water 0.22-0.32 parts.
- the present invention can also adopt other ultra-high performance concrete in the prior art, or other ultra-high performance concrete in the prior art that can meet the above physical and mechanical performance indicators.
- the physical and mechanical properties of the ultra-high performance concrete used are: the compressive strength is 135MPa, the flexural strength is 16MPa, the axial tensile strength is 7MPa, and the elastic modulus under static compression is 42GPa , Poisson's ratio is 0.2.
- the prefabricated staircase is assembled by Z-shaped steps 1 , L-shaped platforms 2 and connecting bolts 4 , and the components formed by the lower flat plates and vertical plates of two adjacent Z-shaped steps 1 are used as the ladder beams 3 .
- the length-to-height ratio of the Z-shaped steps 1 is 0.02, and the upper surface is provided with a non-slip groove 5 and a railing fixing pile 6.
- high-strength Bolts 4 are used for connection, and the L-shaped platform 2 is also built with reserved steel bars or other reserved bolt holes, and the L-shaped platform 2 is connected to the external load-bearing structure through the reserved steel bars or other reserved bolt holes.
- the prefabricated staircase is assembled from L-shaped steps 1, flat-plate platforms 2 and zigzag beams 3. Both the L-shaped steps 1 and the flat-plate platforms 2 are assembled. Anti-skid grooves 5 and railing fixing piles 6 are provided.
- the L-shaped step 1, the flat platform 2 and the zigzag ladder beam 3 are all provided with connecting holes 7. Between the L-shaped step 1 and the zigzag ladder beam 3, the flat platform 2 and the serrated ladder beam 3 are connected by high-strength bolts 4, and the connecting holes 7 are filled with ultra-high-performance concrete to fix the L-shaped step 1.
- the flat-plate platform 2 is also built with reserved steel bars and Leave bolt holes for connection to the external load-bearing structure.
- the present invention also provides an assembly process of an ultra-high performance concrete assembled light and thin prefabricated staircase, comprising the following steps:
- S2 The prepared ultra-high performance concrete is poured into the prepared step, platform and ladder beam molds respectively.
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Steps, Ramps, And Handrails (AREA)
Abstract
Disclosed in the present invention are an ultra-high performance concrete assembly-type light and thin prefabricated staircase and an assembly process therefor. The prefabricated staircase comprises: treads, landings, a stringer, and connecting components; the prefabricated staircase is made of ultra-high performance concrete; and the treads, the landings, the stringer, and the connecting components are all prefabricated parts, and are assembled and connected to obtain the prefabricated staircase. According to the present invention, the structure is simple; a design solution that all the treads, the landings, the stringer, and the connecting members can be prefabricated separately, so that staircase components can be transported to a construction site first before assembly, and thus the problem that conventional prefabricated staircases are heavy in self-weight, large in volume and inconvenient to transport is solved, and the problem that a staircase mold is large in volume and inflexible to adjust is also solved; due to ultra-high strength, ultra-high toughness, and ultra-high durability of the ultra-high performance concrete, sectional dimensions of the staircase components are reduced on the premise that the bearing capacity of the staircase and normal use conditions are met, such that the self-weight and the cost are reduced.
Description
本发明涉及建筑建造技术领域，特别涉及一种超高性能混凝土装配式轻薄预制楼梯及其装配工艺。The invention relates to the technical field of building construction, in particular to an ultra-high-performance concrete assembled light and thin prefabricated staircase and an assembly process thereof.
建筑工业化是提高劳动效率、提升建筑质量的重要方式，也是我国未来建筑业的发展方向。预制装配式建筑作为建筑工业化的代表之一，国家和地方政府出台了一系列政策来促进其高质量的快速发展。装配式建筑的大量建筑部品是由车间生产加工完成的，可以提高生产效率，且节能环保。Construction industrialization is an important way to improve labor efficiency and construction quality, and it is also the development direction of my country's future construction industry. As one of the representatives of construction industrialization, the state and local governments have issued a series of policies to promote its high-quality and rapid development. A large number of building parts of prefabricated buildings are produced and processed in workshops, which can improve production efficiency and save energy and protect the environment.
预制楼梯在建筑工业化的大背景下，被广泛应用于装配式建筑中。目前按照我国现行的预制楼梯图集和标准建造的钢筋混凝土楼梯自重偏大，消耗材料多，导致造价偏高，而且模具体积大调整不灵活，运输、吊装较为困难。Prefabricated stairs are widely used in prefabricated buildings in the context of building industrialization. At present, the reinforced concrete stairs built in accordance with the current prefabricated staircase atlas and standards in my country are too heavy and consume a lot of materials, resulting in high cost, and the large size of the mold is not flexible to adjust, and it is difficult to transport and hoist.
发明内容SUMMARY OF THE INVENTION
针对上述问题，本发明旨在提供一种超高性能混凝土装配式轻薄预制楼梯及其装配工艺。In view of the above problems, the present invention aims to provide an ultra-high-performance concrete assembled light and thin prefabricated staircase and an assembly process thereof.
本发明的技术方案如下：The technical scheme of the present invention is as follows:
一方面，提供一种超高性能混凝土装配式轻薄预制楼梯，包括踏步、平台、梯梁和连接部件，所述预制楼梯由超高性能混凝土制成，所述踏步、平台、梯梁和连接部件均为预制部品，并通过拼装和连接制得所述预制楼梯。In one aspect, an ultra-high-performance concrete fabricated light and thin prefabricated staircase is provided, comprising steps, platforms, ladder beams and connecting parts, the prefabricated staircase is made of ultra-high-performance concrete, the steps, platforms, ladder beams and connecting parts All are prefabricated parts, and the prefabricated stairs are made by assembling and connecting.
作为优选，所述踏步的构造形式为L型、Z型、平板型和波浪型中的任意一种；所述平台为L型薄板或平板型薄板；所述梯梁的构造形式为矩形实心梁、矩形空心梁和锯齿梁中的任意一种。Preferably, the structural form of the step is any one of L-shaped, Z-shaped, flat-plate and wave-shaped; the platform is an L-shaped thin plate or a flat-shaped thin plate; the structural form of the ladder beam is a rectangular solid beam , any one of rectangular hollow beam and sawtooth beam.
作为优选，所述踏步的高长比为0.02-0.05。Preferably, the height-to-length ratio of the steps is 0.02-0.05.
作为优选，所述踏步和/或所述平台的上表面设有防滑凹槽。Preferably, an anti-skid groove is provided on the upper surface of the step and/or the platform.
作为优选，所述踏步和/或所述平台的上表面设有栏杆固定桩。Preferably, the upper surface of the step and/or the platform is provided with a railing fixing pile.
作为优选，所述踏步、平台和梯梁设有预留孔，所述连接部件为螺栓、预留斜杆和预留钢筋中的任意一种。Preferably, the steps, platforms and ladder beams are provided with reserved holes, and the connecting components are any one of bolts, reserved inclined rods and reserved steel bars.
作为优选，所述踏步、平台和梯梁内均内置有钢筋、工字钢或者钢管。Preferably, steel bars, I-beams or steel pipes are built into the steps, platforms and ladder beams.
作为优选，所述超高性能混凝土的物理力学性能指标为抗压强度大于等于120MPa、抗折强度大于等于12MPa、轴心抗拉强度大于等于5MPa、静力受压弹性模量大于等于40GPa、泊松比为0.19-0.24。Preferably, the physical and mechanical performance indicators of the ultra-high performance concrete are compressive strength greater than or equal to 120MPa, flexural strength greater than or equal to 12MPa, axial tensile strength greater than or equal to 5MPa, elastic modulus under static compression greater than or equal to 40GPa, poise The loose ratio is 0.19-0.24.
作为优选，所述超高性能混凝土包括以下组分：水泥1份，矿粉0.1-0.3份，粉煤灰微 珠0.1-0.3份，硅灰0.1-0.25份，纳米二氧化硅0.005-0.025份，细集料1.5-2.0份，钢纤维0.2-0.35份，外加剂0.015-0.03份，水0.22-0.32份。Preferably, the ultra-high performance concrete includes the following components: 1 part of cement, 0.1-0.3 part of mineral powder, 0.1-0.3 part of fly ash microbeads, 0.1-0.25 part of silica fume, and 0.005-0.025 part of nano-silica , 1.5-2.0 part of fine aggregate, 0.2-0.35 part of steel fiber, 0.015-0.03 part of admixture, 0.22-0.32 part of water.
另一方面，提供一种超高性能混凝土装配式轻薄预制楼梯的装配工艺，包括以下步骤：制备超高性能混凝土；准备模具，将踏步、平台和梯梁分别独立浇筑成型；将踏步、平台和梯梁通过连接部件采用与所述连接部件相应的螺栓、焊接或湿接缝方式进行连接。On the other hand, an assembly process of ultra-high-performance concrete prefabricated light and thin prefabricated stairs is provided, which includes the following steps: preparing ultra-high-performance concrete; preparing a mold, and pouring steps, platforms and ladder beams independently; The ladder beams are connected through the connecting parts by means of bolts, welding or wet seams corresponding to the connecting parts.
本发明的有益效果是：The beneficial effects of the present invention are:
本发明结构简单，提出了踏步、平台、梯梁和连接部件均可单独预制的设计方案，从而可以先将楼梯部件运输至施工现场后再进行组装，解决了传统预制楼梯自重大、体积大运输不便的问题；还解决了楼梯模具体积大调整不灵活的问题；利用超高性能混凝土的超高强度、超高韧性和超高耐久性，在满足楼梯承载力以及正常使用条件的前提下，减小了楼梯部件的截面尺寸以降低自重和造价。The invention has a simple structure, and proposes a design scheme in which steps, platforms, ladder beams and connecting parts can be prefabricated separately, so that the stair parts can be transported to the construction site before being assembled, and the transportation of traditional prefabricated stairs with heavy weight and large volume is solved. The problem of inconvenience; it also solves the problem of inflexible adjustment of the large size of the stair mold; using the ultra-high strength, ultra-high toughness and ultra-high durability of ultra-high performance concrete, under the premise of meeting the bearing capacity of the stair and normal use conditions, reduce The section size of the stair components is reduced to reduce the weight and cost.
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.
图1为本发明超高性能混凝土装配式轻薄预制楼梯的一个实施例结构示意图；1 is a schematic structural diagram of an embodiment of an ultra-high performance concrete assembled light and thin prefabricated staircase of the present invention;
图2为图1实施例中踏步的结构示意图；Fig. 2 is the structural representation of step in the embodiment of Fig. 1;
图3为图1实施例中平台的结构示意图；Fig. 3 is the structural representation of the platform in the embodiment of Fig. 1;
图4为本发明超高性能混凝土装配式轻薄预制楼梯的另一个实施例结构示意图；4 is a schematic structural diagram of another embodiment of the ultra-high-performance concrete assembled light and thin prefabricated staircase of the present invention;
图5为图4实施例中踏步与梯梁的局部结构示意图；Fig. 5 is the partial structure schematic diagram of step and ladder beam in the embodiment of Fig. 4;
图6为图4实施例中平台的结构示意图。FIG. 6 is a schematic structural diagram of the platform in the embodiment of FIG. 4 .
图中标号：1-踏步、2-平台、3-梯梁、4-连接部件、5-防滑凹槽、6-栏杆固定桩、7-连接孔。Labels in the figure: 1-step, 2-platform, 3-ladder beam, 4-connecting part, 5-anti-skid groove, 6-railing fixed pile, 7-connecting hole.
下面结合附图和实施例对本发明进一步说明。The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的技术特征可以相互结合。It should be noted that the embodiments in the present application and the technical features in the embodiments may be combined with each other under the condition of no conflict.
需要指出的是，除非另有指明，本申请使用的所有技术和科学术语具有与本申请所属技术领域的普通技术人员通常理解的相同含义。It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
在本发明中，在未作相反说明的情况下，使用的术语“第一”、“第二”等是用于区别 类似的对象，而不是用于描述特定的顺序或先后次序。应该理解这样使用的术语；使用的术语中“上”、“下”、“左”、“右”等通常是针对附图所示的方向而言，或者是针对部件本身在竖直、垂直或重力方向上而言；同样地，为便于理解和描述，“内”、“外”等是指相对于各部件本身的轮廓的内、外。但上述方位词并不用于限制本发明。In the present invention, unless otherwise stated, the terms "first", "second", etc. are used to distinguish similar objects, rather than to describe a specific order or sequence. The terminology so used should be understood; the terms "upper," "lower," "left," "right," etc. are used generally with respect to the orientation shown in the drawings, or with respect to the component itself in vertical, vertical, or In terms of the direction of gravity; similarly, for the convenience of understanding and description, "inner", "outer", etc. refer to the inner and outer relative to the contour of each component itself. However, the above-mentioned orientation words are not used to limit the present invention.
如图1-6所示，一方面，本发明提供一种超高性能混凝土装配式轻薄预制楼梯，包括踏步1、平台2、梯梁3和连接部件4，所述预制楼梯由超高性能混凝土制成，所述踏步1、平台2、梯梁3和连接部件4均为预制部品，并通过拼装和连接制得所述预制楼梯。As shown in FIGS. 1-6 , on the one hand, the present invention provides an ultra-high-performance concrete assembled light and thin prefabricated staircase, comprising steps 1 , platforms 2 , ladder beams 3 and connecting parts 4 , and the prefabricated staircase is made of ultra-high-performance concrete The steps 1, the platform 2, the ladder beams 3 and the connecting parts 4 are all prefabricated parts, and the prefabricated stairs are made by assembling and connecting.
在本实施例中，通过采用超高性能混凝土制作楼梯，能够在满足楼梯承载力以及正常使用条件的前提下，混凝土用量更少，以此降低楼梯的自重；另外通过将踏步、平台、梯梁和连接部件均设置成预制部品，能够先将各预制部品运输至施工现场后再进行组装，解决了传统预制楼梯自重大、体积大运输不便的问题，同时也解决了楼梯模具体积大调整不灵活的问题。In this embodiment, by using ultra-high-performance concrete to make the stairs, under the premise of satisfying the bearing capacity of the stairs and the normal use conditions, the amount of concrete can be reduced, thereby reducing the self-weight of the stairs; All prefabricated parts and connecting parts are set as prefabricated parts, and each prefabricated part can be transported to the construction site before being assembled, which solves the problems of traditional prefabricated stairs that are self-heavy and bulky and inconvenient to transport, and also solves the problem that the size of the stair mold is large and inflexible to adjust. The problem.
在一个具体的实施例中，所述踏步1的构造形式为L型、Z型、平板型和波浪型中的任意一种；所述平台2为L型薄板或平板型薄板；所述梯梁3的构造形式为矩形实心梁、矩形空心梁和锯齿梁中的任意一种；所述踏步1、平台2和梯梁3设有预留孔，所述连接部件4为螺栓、预留斜杆和预留钢筋中的任意一种。In a specific embodiment, the structural form of the step 1 is any one of L-shaped, Z-shaped, flat-shaped and wave-shaped; the platform 2 is an L-shaped sheet or a flat-shaped sheet; the ladder beam The structural form of 3 is any one of a rectangular solid beam, a rectangular hollow beam and a sawtooth beam; the step 1, the platform 2 and the ladder beam 3 are provided with reserved holes, and the connecting member 4 is a bolt, a reserved oblique rod. and any of the reserved steel bars.
在一个具体的实施例中，所述踏步1的高长比为0.02-0.05，所述踏步1和/或所述平台2的上表面设有防滑凹槽5和栏杆固定桩6，所述踏步1、平台2和梯梁3内均内置有钢筋、工字钢或者钢管，内置的钢筋、工字钢或者钢管能够防止预制部件发生侧移。In a specific embodiment, the height-to-length ratio of the step 1 is 0.02-0.05, and the upper surface of the step 1 and/or the platform 2 is provided with an anti-slip groove 5 and a railing fixing pile 6 . 1. There are steel bars, I-beams or steel pipes built into the platform 2 and the ladder beams 3. The built-in steel bars, I-beams or steel pipes can prevent the prefabricated parts from shifting sideways.
在一个具体的实施例中，所述超高性能混凝土的物理力学性能指标为抗压强度大于等于120MPa、抗折强度大于等于12MPa、轴心抗拉强度大于等于5MPa、静力受压弹性模量大于等于40GPa、泊松比为0.19-0.24。In a specific embodiment, the physical and mechanical performance indicators of the ultra-high performance concrete are compressive strength greater than or equal to 120 MPa, flexural strength greater than or equal to 12 MPa, axial tensile strength greater than or equal to 5 MPa, and elastic modulus under static compression. Greater than or equal to 40GPa, Poisson's ratio is 0.19-0.24.
可选地，所述超高性能混凝土包括以下组分：水泥1份，矿粉0.1-0.3份，粉煤灰微珠0.1-0.3份，硅灰0.1-0.25份，纳米二氧化硅0.005-0.025份，细集料1.5-2.0份，钢纤维0.2-0.35份，外加剂0.015-0.03份，水0.22-0.32份。Optionally, the ultra-high performance concrete includes the following components: 1 part of cement, 0.1-0.3 part of mineral powder, 0.1-0.3 part of fly ash microbeads, 0.1-0.25 part of silica fume, and 0.005-0.025 part of nano-silica parts, fine aggregate 1.5-2.0 parts, steel fiber 0.2-0.35 parts, admixtures 0.015-0.03 parts, water 0.22-0.32 parts.
需要说明的是，本发明也可采用其他现有技术的超高性能混凝土，或者其他现有技术中能够满足上述物理力学性能指标的超高性能混凝土。It should be noted that the present invention can also adopt other ultra-high performance concrete in the prior art, or other ultra-high performance concrete in the prior art that can meet the above physical and mechanical performance indicators.
在一个具体的实施例中，所用的超高性能混凝土的物理力学性能指标为：抗压强度为135MPa、抗折强度为16MPa、轴心抗拉强度为7MPa、静力受压弹性模量为42GPa、泊松比为0.2。所述预制楼梯由Z型踏步1、L型平台2和连接螺栓4组装而成，相邻两个Z型踏步1的下平板与竖板形成的部件作为所述梯梁3。所述Z型踏步1的长高比为0.02，上表面设有 防滑凹槽5和栏杆固定桩6，相邻两个Z型踏步1之间、Z型踏步1与平台2之间均通过高强螺栓4进行连接，所述L型平台2还内置有预留钢筋或其他预留螺栓孔，通过所述预留钢筋或其他预留螺栓孔使所述L型平台2与外部承重结构相连。In a specific embodiment, the physical and mechanical properties of the ultra-high performance concrete used are: the compressive strength is 135MPa, the flexural strength is 16MPa, the axial tensile strength is 7MPa, and the elastic modulus under static compression is 42GPa , Poisson's ratio is 0.2. The prefabricated staircase is assembled by Z-shaped steps 1 , L-shaped platforms 2 and connecting bolts 4 , and the components formed by the lower flat plates and vertical plates of two adjacent Z-shaped steps 1 are used as the ladder beams 3 . The length-to-height ratio of the Z-shaped steps 1 is 0.02, and the upper surface is provided with a non-slip groove 5 and a railing fixing pile 6. Between two adjacent Z-shaped steps 1, and between the Z-shaped steps 1 and the platform 2, high-strength Bolts 4 are used for connection, and the L-shaped platform 2 is also built with reserved steel bars or other reserved bolt holes, and the L-shaped platform 2 is connected to the external load-bearing structure through the reserved steel bars or other reserved bolt holes.
在另一个具体的实施例中，与上述实施例不同的是，述预制楼梯由L型踏步1、平板型平台2和锯齿型梯梁3组装而成，L型踏步1和平板型平台2均设置有防滑凹槽5和栏杆固定桩6，L型踏步1、平板型平台2和锯齿型梯梁3均设置有连接孔7，L型踏步1与锯齿型梯梁3之间、平板型平台2与锯齿型梯梁3之间均通过高强螺栓4进行连接，并在连接孔7内灌满超高性能混凝土来固定L型踏步1，所述平板型平台2还内置有预留钢筋和预留螺栓孔，连接于外部承重结构上。In another specific embodiment, different from the above-mentioned embodiment, the prefabricated staircase is assembled from L-shaped steps 1, flat-plate platforms 2 and zigzag beams 3. Both the L-shaped steps 1 and the flat-plate platforms 2 are assembled. Anti-skid grooves 5 and railing fixing piles 6 are provided. The L-shaped step 1, the flat platform 2 and the zigzag ladder beam 3 are all provided with connecting holes 7. Between the L-shaped step 1 and the zigzag ladder beam 3, the flat platform 2 and the serrated ladder beam 3 are connected by high-strength bolts 4, and the connecting holes 7 are filled with ultra-high-performance concrete to fix the L-shaped step 1. The flat-plate platform 2 is also built with reserved steel bars and Leave bolt holes for connection to the external load-bearing structure.
另一方面，本发明还提供一种超高性能混凝土装配式轻薄预制楼梯的装配工艺，包括以下步骤：On the other hand, the present invention also provides an assembly process of an ultra-high performance concrete assembled light and thin prefabricated staircase, comprising the following steps:
S1：制备超高性能混凝土：按水泥1份，矿粉0.3份，粉煤灰微珠0.1份，硅灰0.25份，纳米二氧化硅0.015份，细集料1.8份，钢纤维0.35份，外加剂0.015份，水0.3份来称量超高性能混凝土所需的材料组分，第一步先制得匀质性好的超高性能混凝土干粉料，第二步将超高性能混凝土干粉料倒入普通强制式搅拌机，加入称量好的水和外加剂，搅拌均匀制得浆体物料，将称量好的钢纤维均匀加入浆体物料中，搅拌均匀制得超高性能混凝土浆体。S1: Preparation of ultra-high performance concrete: 1 part of cement, 0.3 part of mineral powder, 0.1 part of fly ash microbeads, 0.25 part of silica fume, 0.015 part of nano-silica, 1.8 part of fine aggregate, 0.35 part of steel fiber, plus In the first step, the ultra-high performance concrete dry powder with good homogeneity was prepared, and the second step was poured into the ultra-high performance concrete dry powder. Ordinary forced mixer, add the weighed water and admixtures, stir evenly to prepare the slurry material, add the weighed steel fiber into the slurry material evenly, and stir evenly to prepare the ultra-high performance concrete slurry.
S2：将制备得到的超高性能混凝土分别浇筑在准备好的踏步、平台和梯梁模具中。S2: The prepared ultra-high performance concrete is poured into the prepared step, platform and ladder beam molds respectively.
S3：待浆体硬化后拆模，然后将一定数量的踏步、两个平台和梯梁通过螺栓、焊接或湿接缝等方式进行连接，得到所述预制楼梯。具体地，若踏步、平台和梯梁上设有预留螺栓孔，则选用螺栓作为连接部件进行螺栓连接，若踏步和梯梁内置有预留钢筋或预留斜杆，则在平台上设置连接孔，组装连接时，将预留钢筋或预留斜杆穿过所述连接孔，然后向连接孔内灌注超高性能混凝土浆料进行密封连接。S3: After the slurry is hardened, the mold is removed, and then a certain number of steps, two platforms and ladder beams are connected by means of bolts, welding or wet joints, etc., to obtain the prefabricated staircase. Specifically, if there are reserved bolt holes on the steps, platforms and ladder beams, bolts are used as connecting parts for bolt connection. When assembling the connection, the reserved steel bar or the reserved inclined rod is passed through the connection hole, and then the ultra-high performance concrete slurry is poured into the connection hole for sealing connection.
以上所述，仅是本发明的较佳实施例而已，并非对本发明作任何形式上的限制，虽然本发明已以较佳实施例揭露如上，然而并非用以限定本发明，任何熟悉本专业的技术人员，在不脱离本发明技术方案范围内，当可利用上述揭示的技术内容作出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本发明技术方案的范围内。The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Technical personnel, within the scope of the technical solution of the present invention, can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above, but any content that does not depart from the technical solution of the present invention, according to the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solutions of the present invention.
Claims (10)
- 一种超高性能混凝土装配式轻薄预制楼梯，其特征在于，包括踏步、平台、梯梁和连接部件，所述预制楼梯由超高性能混凝土制成，所述踏步、平台、梯梁和连接部件均为预制部品，并通过拼装和连接制得所述预制楼梯。An ultra-high-performance concrete prefabricated light and thin prefabricated staircase, characterized in that it includes steps, platforms, ladder beams and connecting parts, the prefabricated staircase is made of ultra-high-performance concrete, and the steps, platforms, ladder beams and connecting parts All are prefabricated parts, and the prefabricated stairs are made by assembling and connecting.
- 根据权利要求1所述的超高性能混凝土装配式轻薄预制楼梯，其特征在于，所述踏步的构造形式为L型、Z型、平板型和波浪型中的任意一种；所述平台为L型薄板或平板型薄板；所述梯梁的构造形式为矩形实心梁、矩形空心梁和锯齿梁中的任意一种。The ultra-high performance concrete assembled light and thin prefabricated staircase according to claim 1, wherein the structural form of the step is any one of L-shaped, Z-shaped, flat-shaped and wave-shaped; the platform is L-shaped The structural form of the ladder beam is any one of a rectangular solid beam, a rectangular hollow beam and a sawtooth beam.
- 根据权利要求1所述的超高性能混凝土装配式轻薄预制楼梯，其特征在于，所述踏步的高长比为0.02-0.05。The ultra-high performance concrete fabricated light and thin prefabricated staircase according to claim 1, wherein the height-to-length ratio of the steps is 0.02-0.05.
- 根据权利要求1所述的超高性能混凝土装配式轻薄预制楼梯，其特征在于，所述踏步和/或所述平台的上表面设有防滑凹槽。The ultra-high performance concrete fabricated light and thin prefabricated staircase according to claim 1, characterized in that, an anti-slip groove is provided on the upper surface of the step and/or the platform.
- 根据权利要求1所述的超高性能混凝土装配式轻薄预制楼梯，其特征在于，所述踏步和/或所述平台的上表面设有栏杆固定桩。The ultra-high performance concrete prefabricated light and thin prefab staircase according to claim 1, characterized in that, the upper surface of the steps and/or the platform is provided with railing fixed piles.
- 根据权利要求1所述的超高性能混凝土装配式轻薄预制楼梯，其特征在于，所述踏步、平台和梯梁设有预留孔，所述连接部件为螺栓、预留斜杆和预留钢筋中的任意一种。The ultra-high performance concrete assembled light and thin prefabricated staircase according to claim 1, wherein the steps, the platform and the ladder beam are provided with reserved holes, and the connecting components are bolts, reserved inclined rods and reserved steel bars any of the .
- 根据权利要求6所述的超高性能混凝土装配式轻薄预制楼梯，其特征在于，所述踏步、平台和梯梁内均内置有钢筋、工字钢或者钢管。The ultra-high performance concrete prefabricated light and thin prefab staircase according to claim 6, wherein the steps, platforms and ladder beams are all built with steel bars, I-beams or steel pipes.
- 根据权利要求1-7中任意一项所述的超高性能混凝土装配式轻薄预制楼梯，其特征在于，所述超高性能混凝土的物理力学性能指标为抗压强度大于等于120MPa、抗折强度大于等于12MPa、轴心抗拉强度大于等于5MPa、静力受压弹性模量大于等于40GPa、泊松比为0.19-0.24。The ultra-high-performance concrete fabricated light and thin prefabricated staircase according to any one of claims 1-7, wherein the physical and mechanical properties of the ultra-high-performance concrete are compressive strength greater than or equal to 120 MPa, and flexural strength greater than or equal to 120 MPa. It is equal to 12MPa, the axial tensile strength is greater than or equal to 5MPa, the elastic modulus of static compression is greater than or equal to 40GPa, and the Poisson's ratio is 0.19-0.24.
- 根据权利要求8所述的超高性能混凝土装配式轻薄预制楼梯，其特征在 于，所述超高性能混凝土包括以下组分：水泥1份，矿粉0.1-0.3份，粉煤灰微珠0.1-0.3份，硅灰0.1-0.25份，纳米二氧化硅0.005-0.025份，细集料1.5-2.0份，钢纤维0.2-0.35份，外加剂0.015-0.03份，水0.22-0.32份。The ultra-high-performance concrete assembled light and thin prefabricated staircase according to claim 8, wherein the ultra-high-performance concrete comprises the following components: 1 part of cement, 0.1-0.3 parts of mineral powder, and 0.1-0.3 parts of fly ash microbeads. 0.3 part, silica fume 0.1-0.25 part, nano silica 0.005-0.025 part, fine aggregate 1.5-2.0 part, steel fiber 0.2-0.35 part, admixture 0.015-0.03 part, water 0.22-0.32 part.
- 如权利要求1-9中任意一项所述的超高性能混凝土装配式轻薄预制楼梯的装配工艺，其特征在于，包括以下步骤：The assembly process of ultra-high performance concrete prefabricated light and thin prefabricated stairs according to any one of claims 1-9, characterized in that, comprising the following steps:制备超高性能混凝土；Preparation of ultra-high performance concrete;准备模具，将踏步、平台和梯梁分别独立浇筑成型；Prepare the mold, and cast the steps, platforms and ladder beams independently;将踏步、平台和梯梁通过连接部件采用与所述连接部件相应的螺栓、焊接或湿接缝方式进行连接。Steps, platforms and ladder beams are connected through the connecting parts by means of bolts, welding or wet seams corresponding to the connecting parts.
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| CN112523443A (en) | 2021-03-19 |
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