CN107476470A - Steel pipe built in assembled and GFRP pipe regeneration concrete compound shear walls and its construction method - Google Patents

Steel pipe built in assembled and GFRP pipe regeneration concrete compound shear walls and its construction method Download PDF

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Publication number
CN107476470A
CN107476470A CN201710788522.6A CN201710788522A CN107476470A CN 107476470 A CN107476470 A CN 107476470A CN 201710788522 A CN201710788522 A CN 201710788522A CN 107476470 A CN107476470 A CN 107476470A
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built
gfrp
pipe
wall
steel
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杨涛
王智
杨迪
陈万庆
谢元康
成琳洁
蒋铁军
黄宁武
廖志辉
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Guangxi University
China Railway Construction Group Southern Engineering Co Ltd
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Guangxi University
China Railway Construction Group Southern Engineering Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • E04B2/58Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal

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  • Architecture (AREA)
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  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

本发明公开了一种装配式内置钢管和GFRP管再生混凝土组合剪力墙,包括受力钢筋、内置管以及包裹它们构成预制墙体的混凝土,内置管包括内置钢管和内置GFRP管,混凝土为再生混凝土。本发明将内置在剪力墙中的部分钢管用GFRP管代替,充分发挥钢管变形性能好以及GFRP管轻质高强的优点,既可以增强结构的承载能力,又可以减轻预制构件的重量。据此,发明人还建立了相应的施工方法。应用本发明可实现内置钢管和GFRP管的再生混凝土组合剪力墙结构的预制产业化生产和装配化施工,在提高施工质量管控水平的同时实现对预制构件厂生产过程中产生的大量混凝土废料的回收再利用。

The invention discloses an assembled recycled concrete shear wall with built-in steel pipes and GFRP pipes, which includes reinforced steel bars, built-in pipes and concrete wrapping them to form a prefabricated wall. The built-in pipes include built-in steel pipes and built-in GFRP pipes, and the concrete is recycled concrete. The present invention replaces part of the steel pipes built in the shear wall with GFRP pipes to give full play to the advantages of good deformation performance of steel pipes and light weight and high strength of GFRP pipes, which can not only enhance the bearing capacity of the structure, but also reduce the weight of prefabricated components. Accordingly, the inventor has also established a corresponding construction method. The application of the present invention can realize prefabricated industrial production and assembly construction of recycled concrete composite shear wall structures with built-in steel pipes and GFRP pipes, and realize the recovery of a large amount of concrete waste generated in the production process of prefabricated component factories while improving the level of construction quality control. Recycle.

Description

装配式内置钢管和GFRP管再生混凝土组合剪力墙及其施工 方法Prefabricated built-in steel pipe and GFRP pipe recycled concrete composite shear wall and its construction method

技术领域technical field

本发明属于内置钢管混凝土组合剪力墙技术领域,尤其涉及一种装配式内置钢管和GFRP管再生混凝土组合剪力墙及其施工方法。The invention belongs to the technical field of built-in steel pipe concrete composite shear walls, in particular to an assembled built-in steel pipe and GFRP pipe recycled concrete composite shear wall and a construction method thereof.

背景技术Background technique

钢筋混凝土剪力墙是高层和超高层建筑结构中重要的受力构件,主要承担竖向和水平荷载。为了改善钢筋混凝土剪力墙的受力性能,在墙体内放置钢管便形成了内置钢管混凝土剪力墙。目前,内置钢管混凝土剪力墙的施工流程主要为钢管定位→钢筋绑扎→模板支设→混凝土浇筑→混凝土养护。虽然内置钢管混凝土剪力墙具有承载力高、抗震性能好等优点,但是存在现场钢管吊装复杂、剪力墙钢筋绑扎工作量大等问题,这在施工现场会占用大量时间,同时对场地条件和施工组织提出了较高的要求。Reinforced concrete shear wall is an important force-bearing member in high-rise and super high-rise building structures, mainly bearing vertical and horizontal loads. In order to improve the mechanical performance of the reinforced concrete shear wall, steel pipes are placed inside the wall to form a built-in steel pipe concrete shear wall. At present, the construction process of the built-in steel pipe concrete shear wall is mainly steel pipe positioning → steel bar binding → formwork support → concrete pouring → concrete curing. Although the built-in CFST shear wall has the advantages of high bearing capacity and good seismic performance, there are problems such as complex hoisting of steel pipes on site and heavy workload for binding steel bars in the shear wall. The construction organization has put forward higher requirements.

近年来,我国提出了预制装配结构产业化的发展目标,明确提出到2020年结构主体产业化在新建筑中所占比例达到30%~50%、2025年达到50%~70%的目标。预制装配式结构能够实现预制构件工业化生产,具有施工速度快、质量可靠等优势。In recent years, my country has put forward the development goal of the industrialization of prefabricated assembly structures, and clearly stated that by 2020, the proportion of structural main body industrialization in new buildings will reach 30% to 50%, and by 2025 it will reach 50% to 70%. The prefabricated assembly structure can realize the industrial production of prefabricated components, and has the advantages of fast construction speed and reliable quality.

发明内容Contents of the invention

本发明要解决的技术问题是提供一种质轻高强、生产方便、施工简单、更换容易且可实现建筑废料循环利用的装配式内置钢管和GFRP管再生混凝土组合剪力墙及其施工方法。The technical problem to be solved by the present invention is to provide an assembled built-in steel pipe and GFRP pipe recycled concrete composite shear wall and its construction method, which are light in weight, high in strength, convenient in production, simple in construction, easy in replacement, and can realize recycling of construction waste.

为解决上述技术问题,本发明采用以下技术方案:In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

装配式内置钢管和GFRP管再生混凝土组合剪力墙,包括受力钢筋、内置管以及包裹它们构成预制墙体的混凝土,内置管包括内置钢管和内置GFRP管,混凝土为再生混凝土。The prefabricated built-in steel pipe and GFRP pipe recycled concrete composite shear wall includes stressed steel bars, built-in pipes and concrete wrapping them to form a prefabricated wall. The built-in pipes include built-in steel pipes and built-in GFRP pipes, and the concrete is recycled concrete.

预制墙体厚度小于500mm时,预制墙体沿高度方向按照2倍层高进行拆分预制并且墙的侧面设置梁托或板托;预制墙体厚度大于500mm时,预制墙体沿高度方向按照1倍层高进行拆分预制。When the thickness of the prefabricated wall is less than 500mm, the prefabricated wall is split and prefabricated along the height direction according to 2 times the storey height and the side of the wall is provided with beam brackets or board brackets; Double layer height for split prefabrication.

内置钢管外壁布设栓钉连接件,栓钉焊接于管壁,内置GFRP管外壁设置GFRP抗剪连接件。The outer wall of the built-in steel pipe is equipped with stud connectors, the studs are welded to the pipe wall, and the outer wall of the built-in GFRP pipe is equipped with GFRP shear connectors.

内置管沿预制墙体宽度方向平行布置,预制墙体宽度两端布置内置钢管,相邻内置管的中心间距为2D-5D,D为内置钢管和内置GFRP管中外径较小者的外径。The built-in pipes are arranged in parallel along the width direction of the prefabricated wall, and the built-in steel pipes are arranged at both ends of the width of the prefabricated wall. The distance between the centers of adjacent built-in pipes is 2D-5D, and D is the outer diameter of the smaller outer diameter of the built-in steel pipe and the built-in GFRP pipe.

受力钢筋包括竖向钢筋和水平分布钢筋,竖向钢筋和水平分布钢筋间距不宜大于300mm,竖向钢筋和水平分布钢筋组成的钢筋网片之间设置拉结钢筋,拉结钢筋分布间距为100-200mm。The stress reinforcement includes vertical reinforcement and horizontal distribution reinforcement. The spacing between vertical reinforcement and horizontal distribution reinforcement should not be greater than 300mm. Tension reinforcement is set between the reinforcement mesh composed of vertical reinforcement and horizontal distribution reinforcement. The distribution spacing of tie reinforcement is 100mm. -200mm.

内置钢管、内置GFRP管、竖向钢筋、水平分布钢筋均伸出预制墙体外;预制墙体宽度两端沿高度方向设置U型拼接槽,槽内均匀布置U型拉结筋,U型拉结钢筋的直径不小于12mm且仲入墙体内的长度满足锚固要求,U型拉结钢筋的间距不应大于水平分布钢筋的间距。Built-in steel pipes, built-in GFRP pipes, vertical steel bars, and horizontally distributed steel bars all extend out of the prefabricated wall; U-shaped splicing grooves are arranged at both ends of the width of the prefabricated wall along the height direction, and U-shaped tie bars are evenly arranged in the grooves. The diameter of the tie bars should not be less than 12mm and the length of the middle into the wall meets the anchoring requirements, and the spacing of the U-shaped tie bars should not be greater than the spacing of the horizontally distributed bars.

再生混凝土由生产预制构件产生的混凝土废料加工而成,其强度不低于C40。Recycled concrete is processed from concrete waste from the production of precast elements and has a strength not lower than C40.

上述装配式内置钢管和GFRP管再生混凝土组合剪力墙的施工方法,按以下进行操作:The construction method of the above-mentioned prefabricated built-in steel pipe and GFRP pipe recycled concrete composite shear wall is as follows:

<1>在水平方向,将两片装配式内置钢管和GFRP管再生混凝土组合剪力墙构件的水平分布钢筋连接,相邻两片剪力墙的U型拼接槽内的U型拉结筋相互交错,并在相交区域内布置不少于2根竖向插筋;<1> In the horizontal direction, connect the horizontally distributed steel bars of the composite shear wall members of two assembled built-in steel pipes and GFRP pipe recycled concrete, and the U-shaped tie bars in the U-shaped splicing grooves of two adjacent shear walls are connected to each other. Staggered, and arrange no less than 2 vertical bars in the intersecting area;

<2>在高度方向,两片装配式内置钢管和GFRP管再生混凝土组合剪力墙构件在进行装配施工时,首先将上下两片剪力墙中的内置钢管和内置GFRP管进行连接定位;同时,上下两片剪力墙中的竖向钢筋可靠连接;当预制剪力墙构件位于结构底层时,墙体接头处的竖向钢筋和管材与基础上预埋的钢筋和管材可靠连接;<2> In the height direction, when assembling and constructing the recycled concrete composite shear wall components of the two assembled built-in steel pipes and GFRP pipes, firstly connect and position the built-in steel pipes and the built-in GFRP pipes in the upper and lower shear walls; at the same time , the vertical steel bars in the upper and lower shear walls are reliably connected; when the prefabricated shear wall components are located at the bottom of the structure, the vertical steel bars and pipes at the wall joints are reliably connected with the pre-embedded steel bars and pipes on the foundation;

<3>当装配式内置钢管和GFRP管再生混凝土组合剪力墙与端柱连接时,伸出墙体的水平分布钢筋与端柱上预设的水平拉结钢筋可靠连接;<3> When the assembled built-in steel pipe and GFRP pipe recycled concrete composite shear wall is connected to the end column, the horizontally distributed reinforcement protruding from the wall is reliably connected to the preset horizontal tie reinforcement on the end column;

<4>钢管、钢筋连接完毕后,在墙与墙、墙与端柱、墙与基础拼接接头处支设模板并浇筑混凝土;<4> After the steel pipes and steel bars are connected, formwork is supported and concrete is poured at the joints of walls and walls, walls and end columns, walls and foundations;

<5>在装配式内置钢管和GFRP管再生混凝土组合剪力墙的内置管材内部浇筑混凝土。<5> Concrete is poured inside the built-in pipe of the assembled built-in steel pipe and GFRP pipe recycled concrete composite shear wall.

步骤<4>和步骤<5>中浇筑的混凝土强度等级比预制构件所采用的再生混凝土强度等级的提高一级。The strength grade of the concrete poured in step <4> and step <5> is one level higher than the strength grade of the recycled concrete used in the prefabricated components.

针对现有内置钢管混凝土剪力墙存在的问题,发明人设计制备了一种装配式内置钢管和GFRP管再生混凝土组合剪力墙,包括受力钢筋、内置管以及包裹它们构成预制墙体的混凝土,内置管包括内置钢管和内置GFRP管,混凝土为再生混凝土。本发明将内置在剪力墙中的部分钢管用GFRP管代替,充分发挥钢管变形性能好以及GFRP管轻质高强的优点,既可以增强结构的承载能力,又可以减轻预制构件的重量。据此,发明人还建立了相应的施工方法:首先将剪力墙进行合理的区段划分,随后在预制构件厂对墙体构件进行分段预制,利用预制构件厂在生产过程中产生的大量高品质混凝土废料,将混凝土废料进行回收处理并制备成再生混凝土后用于剪力墙墙体构件的制备;待剪力墙构件达到预定强度后,将构件运输至施工现场进行拼装,最终形成具有良好整体工作性能的内置钢管和GFRP管的组合剪力墙结构。应用本发明可实现内置钢管和GFRP管的再生混凝土组合剪力墙结构的预制产业化生产和装配化施工,在提高施工质量管控水平的同时实现对预制构件厂生产过程中产生的大量混凝土废料的回收再利用Aiming at the problems existing in the existing built-in steel pipe concrete shear wall, the inventor designed and prepared an assembled built-in steel pipe and GFRP pipe recycled concrete composite shear wall, including stressed steel bars, built-in pipes and concrete wrapping them to form a prefabricated wall , the built-in pipes include built-in steel pipes and built-in GFRP pipes, and the concrete is recycled concrete. The present invention replaces part of the steel pipes built in the shear wall with GFRP pipes to give full play to the advantages of good deformation performance of steel pipes and light weight and high strength of GFRP pipes, which can not only enhance the bearing capacity of the structure, but also reduce the weight of prefabricated components. Based on this, the inventor also established a corresponding construction method: firstly divide the shear wall into reasonable sections, then prefabricate the wall components in sections in the prefabricated component factory, and use the large amount of energy produced by the prefabricated component factory during the production process. High-quality concrete waste, the concrete waste is recycled and prepared into recycled concrete for the preparation of shear wall wall components; after the shear wall components reach the predetermined strength, the components are transported to the construction site for assembly, and finally form a A combined shear wall structure with built-in steel pipes and GFRP pipes with good overall performance. The application of the present invention can realize prefabricated industrial production and assembly construction of recycled concrete composite shear wall structures with built-in steel pipes and GFRP pipes, and realize the recovery of a large amount of concrete waste generated in the production process of prefabricated component factories while improving the level of construction quality control. recycle

与现有技术相比,本发明具有以下优势:Compared with the prior art, the present invention has the following advantages:

(1)装配式内置钢管和GFRP管再生混凝土组合剪力墙可在生产车间加工完成,体现了工业化建筑施工的优势,减少了现场管材吊装的程序,降低了内置钢管剪力墙结构在施工过程中对场地条件的要求,降低了施工组织的复杂程度,有利于提升结构的施工质量和效率。(1) The prefabricated built-in steel pipe and GFRP pipe recycled concrete composite shear wall can be processed in the production workshop, which reflects the advantages of industrialized building construction, reduces the procedure of on-site pipe hoisting, and reduces the construction process of the built-in steel pipe shear wall structure. The requirements for the site conditions in the middle reduce the complexity of the construction organization and help to improve the construction quality and efficiency of the structure.

(2)由于预制构件厂会产生大量的混凝土废料,将上述废料进行回收并制备成再生混凝土,可实现建筑废料的循环使用,在取得良好经济效益的同时,实现较高的环保价值。(2) Since the prefabricated component factory will produce a large amount of concrete waste, recycling the above waste and preparing it into recycled concrete can realize the recycling of construction waste, and achieve high environmental protection value while achieving good economic benefits.

(3)当剪力墙构件遭受震损或其他损伤时,便于构件的更换维护。(3) When the shear wall components suffer from earthquake damage or other damage, it is convenient to replace and maintain the components.

附图说明Description of drawings

图1是高度按照1层层高进行预制时装配式内置钢管和GFRP管再生混凝土组合剪力墙结构示意图。Figure 1 is a schematic diagram of the structure of the prefabricated built-in steel pipe and GFRP pipe recycled concrete composite shear wall when the height is prefabricated according to the height of one storey.

图2是图1中剪力墙的侧视图。Fig. 2 is a side view of the shear wall in Fig. 1 .

图3是图1中剪力墙的俯视图。Fig. 3 is a top view of the shear wall in Fig. 1 .

图4是图1中剪力墙A-A剖面图。Fig. 4 is a sectional view of the shear wall A-A in Fig. 1 .

图5是图2中剪力墙B-B剖面图。Fig. 5 is a B-B sectional view of the shear wall in Fig. 2 .

图6是高度按照2层层高进行预制时装配式内置钢管和GFRP管再生混凝土组合剪力墙结构示意图。Figure 6 is a schematic diagram of the composite shear wall structure of the prefabricated built-in steel pipe and GFRP pipe recycled concrete when the height is prefabricated according to the height of 2 floors.

图7是图6中剪力墙的侧视图。Fig. 7 is a side view of the shear wall in Fig. 6 .

图8是图6中剪力墙的俯视图。Fig. 8 is a top view of the shear wall in Fig. 6 .

图9是图6中剪力墙C-C剖面图。Fig. 9 is a C-C sectional view of the shear wall in Fig. 6 .

图10是图7中剪力墙D-D剖面图。Fig. 10 is a D-D sectional view of the shear wall in Fig. 7 .

图11是内置钢管和GFRP管再生混凝土组合剪力墙构件与端柱连接示意图。Figure 11 is a schematic diagram of the connection between the built-in steel pipe and the GFRP pipe recycled concrete composite shear wall member and the end column.

图12是图11中E-E剖面图。Fig. 12 is a sectional view of E-E in Fig. 11 .

图13是两相邻内置钢管和GFRP管再生混凝土组合剪力墙构件水平方向安装示意图。Figure 13 is a schematic diagram of horizontal installation of two adjacent built-in steel pipes and GFRP pipe recycled concrete composite shear wall components.

图14是图13中F-F剖面图。Fig. 14 is a sectional view of F-F in Fig. 13 .

图中:1水平分布钢筋,2 U型拉结筋,3内置GFRP管,4内置钢管,5竖向钢筋,6 U型拼接槽,7竖向钢筋和水平分布钢筋组成的钢筋网片之间的拉结钢筋,8板托或梁托,9结构基础,10预埋的竖向钢筋,11预埋的管材,12端柱上预埋的水平向拉结筋,13竖向插筋,14端柱,15预制墙体。In the figure: 1 horizontally distributed reinforcing bars, 2 U-shaped tie bars, 3 built-in GFRP pipes, 4 built-in steel pipes, 5 vertical reinforcing bars, 6 U-shaped splicing grooves, 7 between vertical reinforcing bars and horizontally distributed reinforcing bars ties, 8 plate supports or beam supports, 9 structural foundations, 10 pre-embedded vertical reinforcements, 11 pre-embedded pipes, 12 pre-embedded horizontal tie bars on end columns, 13 vertical bars, 14 End columns, 15 precast walls.

具体实施方式detailed description

装配式内置钢管和GFRP管再生混凝土组合剪力墙的研制Development of prefabricated built-in steel pipe and GFRP pipe recycled concrete composite shear wall

一、设计原理1. Design principle

(1)内置钢管可以有效提高钢筋混凝土剪力墙结构的竖向承载能力。(1) The built-in steel pipe can effectively improve the vertical bearing capacity of the reinforced concrete shear wall structure.

(2)GFRP管具有轻质高强的特点,可以减轻结构自重;但是由于GFRP管的抗剪承载能力相对较差,只能用GFRP管取代部分钢管。(2) GFRP pipe has the characteristics of light weight and high strength, which can reduce the self-weight of the structure; however, due to the relatively poor shear bearing capacity of GFRP pipe, GFRP pipe can only be used to replace some steel pipes.

(3)预制装配式剪力墙能够实现生产的工业化并确保墙体施工质量;通过在施工现场进行组装,大大提高了施工效率。(3) The prefabricated assembly shear wall can realize the industrialization of production and ensure the quality of wall construction; by assembling at the construction site, the construction efficiency is greatly improved.

(4)对预制构件厂在生产过程中产生的大量混凝土废料进行回收再利用,在取得良好经济效益的同时,取得较高的环保价值。(4) Recycle and reuse a large amount of concrete waste generated in the production process of the prefabricated component factory, and achieve high environmental protection value while achieving good economic benefits.

二、基本结构2. Basic structure

如图1至图14,装配式内置钢管和GFRP管再生混凝土组合剪力墙,包括受力钢筋、内置管以及包裹它们构成预制墙体15的混凝土,内置管包括内置钢管4和内置GFRP管3,混凝土为再生混凝土。As shown in Figures 1 to 14, the assembled built-in steel pipe and GFRP pipe recycled concrete composite shear wall includes stressed steel bars, built-in pipes and concrete wrapping them to form a prefabricated wall 15, and the built-in pipes include built-in steel pipes 4 and built-in GFRP pipes 3 , The concrete is recycled concrete.

预制装配式剪力墙尺寸根据工程需求分段定制,其基本尺寸应综合考虑吊装、运输和受力等因素的影响:如图1至图5,预制墙体厚度小于500mm时,预制墙体沿高度方向按照2倍层高进行拆分预制并且墙的侧面应设置板托或梁托8,梁托或板托上根据需要预置预埋件用于墙体和梁板的连接;如图6至图10,预制墙体厚度大于500mm时,预制墙体沿高度方向宜按照1倍层高进行拆分预制。The size of the prefabricated shear wall is customized according to the project requirements, and its basic size should comprehensively consider the influence of factors such as hoisting, transportation and force: as shown in Figure 1 to Figure 5, when the thickness of the prefabricated wall is less than 500mm, the prefabricated wall along the The height direction is split and prefabricated according to 2 times the storey height, and the side of the wall should be provided with board brackets or beam brackets 8, and embedded parts are preset on the beam brackets or board brackets as required for the connection between the wall and the beam board; as shown in Figure 6 Referring to Figure 10, when the thickness of the prefabricated wall is greater than 500mm, the prefabricated wall should be split and prefabricated along the height direction according to 1 times the storey height.

在进行钢管和GFRP管的吊装与临时定位前,内置钢管外壁布设栓钉连接件,栓钉布置方式和数量应满足现行规范的要求,栓钉焊接于管壁,通过栓钉连接件与混凝土可靠连接,内置GFRP管之间通过专用套筒和粘结剂进行连接,内置GFRP管外壁应设置专用的GFRP抗剪连接件。在墙体安装定位前,预制剪力墙构件中钢管和GFRP管内部未浇筑混凝土。Before the hoisting and temporary positioning of steel pipes and GFRP pipes, stud connectors are arranged on the outer wall of the built-in steel pipe. The arrangement and quantity of studs should meet the requirements of the current code. Connection, the built-in GFRP pipes are connected through special sleeves and adhesives, and the outer wall of the built-in GFRP pipes should be provided with special GFRP shear connectors. Before the wall is installed and positioned, no concrete is poured inside the steel pipes and GFRP pipes in the prefabricated shear wall components.

内置管沿预制墙体宽度方向平行布置,为了确保墙体的变形能力,预制墙体宽度两端只能布置内置钢管,相邻内置管的中心间距为2D-5D,D为内置钢管和内置GFRP管中外径较小者的外径。The built-in pipes are arranged in parallel along the width direction of the prefabricated wall. In order to ensure the deformation capacity of the wall, only built-in steel pipes can be arranged at both ends of the width of the prefabricated wall. The center distance between adjacent built-in pipes is 2D-5D, and D is the built-in steel pipe and the built-in GFRP. The outside diameter of the tube with the smaller outside diameter.

受力钢筋包括竖向钢筋5和水平分布钢筋1,根据墙体厚度的不同,在墙体内可采用双层或多层布筋的方式,竖向钢筋和水平分布钢筋的间距不宜大于300mm,竖向钢筋和水平分布钢筋组成的钢筋网片之间设置拉结钢筋7,拉结钢筋分布间距宜为100-200mm。The reinforced steel bars include vertical steel bars 5 and horizontally distributed steel bars 1. According to the thickness of the wall, double-layer or multi-layer reinforcement can be used in the wall. The distance between vertical steel bars and horizontally distributed steel bars should not be greater than 300mm. Tension reinforcement bars 7 are arranged between the reinforcement mesh sheets composed of vertical reinforcement bars and horizontal distribution reinforcement bars, and the distribution spacing of the tie reinforcement bars should be 100-200mm.

在预制墙体的四边分别预置连接锚固措施:内置钢管、内置GFRP管、竖向钢筋、水平分布钢筋均应仲出预制墙体外,内置钢管和内置GFRP管伸出墙体的长度不宜小于300mm;钢筋伸出预制墙体的长度应满足钢筋锚固长度的要求,且钢筋的加工形状和尺寸误差不应大于±10mm;预制墙体宽度两端沿高度方向设置U型拼接槽6,槽内均匀布置U型拉结筋2,U型拉结钢筋的直径不小于12mm且仲入墙体内的长度应满足锚固要求,U型拉结钢筋的间距不应大于水平分布钢筋的间距。Prefabricated connection and anchorage measures on the four sides of the prefabricated wall: built-in steel pipes, built-in GFRP pipes, vertical steel bars, and horizontally distributed steel bars should all go outside the prefabricated wall. 300mm; the length of the steel bars protruding from the prefabricated wall should meet the requirements of the anchorage length of the steel bars, and the processing shape and size error of the steel bars should not be greater than ±10mm; U-shaped splicing grooves 6 are set along the height direction at both ends of the prefabricated wall width, and the grooves Evenly arrange U-shaped tie bars 2. The diameter of U-shaped tie bars should not be less than 12mm and the length inserted into the wall should meet the anchoring requirements. The spacing of U-shaped tie bars should not be greater than the spacing of horizontally distributed bars.

再生混凝土由生产预制构件产生的混凝土废料加工而成,其强度不宜低于C40。内置钢管优先采用Q345、Q390和Q420级;竖向钢筋和水平分布钢筋优先采用HRB335和HRB400级钢筋。Recycled concrete is processed from concrete waste produced in the production of prefabricated components, and its strength should not be lower than C40. Q345, Q390 and Q420 grades are preferred for built-in steel pipes; HRB335 and HRB400 grades are preferred for vertical reinforcement and horizontal distribution reinforcement.

三、施工方法3. Construction method

<1>如图13至14,在水平方向,将预制墙体吊装至安装位置,进行初步定位;将两片装配式内置钢管和GFRP管再生混凝土组合剪力墙构件的水平分布钢筋连接(采用套筒连接、绑扎连接或焊接),相邻两片剪力墙的U型拼接槽内的U型拉结筋应相互交错,并在相交区域内布置不少于2根直径12mm的竖向插筋13;<1> As shown in Figures 13 to 14, in the horizontal direction, hoist the prefabricated wall to the installation position for preliminary positioning; connect the horizontally distributed steel bars of the composite shear wall components of the two assembled built-in steel pipes and GFRP pipe recycled concrete shear walls (using Sleeve connection, binding connection or welding), the U-shaped tie bars in the U-shaped splicing grooves of two adjacent shear walls should be staggered, and no less than two vertical inserts with a diameter of 12mm should be arranged in the intersecting area. Tendon 13;

<2>在高度方向,两片装配式内置钢管和GFRP管再生混凝土组合剪力墙构件在进行装配施工时,首先将上下两片剪力墙中的内置钢管和内置GFRP管进行连接定位,钢管连接可采用螺栓或焊接连接,GFRP管连接可采用专用套筒连接,上下两根管材中心线安装误差应控制在±5mm以内;同时,上下两片剪力墙中的竖向钢筋应可靠连接(可采用套筒连接、绑扎连接或焊接);当预制剪力墙构件位于结构底层时,墙体接头处的竖向钢筋和管材应与结构基础9上预埋的竖向钢筋10和预埋的管材11可靠连接;<2> In the height direction, when assembling and constructing the recycled concrete composite shear wall components of two pieces of fabricated built-in steel pipes and GFRP pipes, firstly connect and position the built-in steel pipes and built-in GFRP pipes in the upper and lower shear walls, and the steel pipes Bolts or welded connections can be used for connection, and special sleeve connections can be used for GFRP pipe connections. The installation error of the centerlines of the upper and lower pipes should be controlled within ±5mm; at the same time, the vertical steel bars in the upper and lower shear walls should be reliably connected ( Sleeve connection, binding connection or welding can be used); when the prefabricated shear wall components are located at the bottom of the structure, the vertical steel bars and pipes at the wall joints should be compatible with the pre-buried vertical steel bars 10 on the structural foundation 9 and the pre-buried Pipe 11 is reliably connected;

<3>如图11至图12,当装配式内置钢管和GFRP管再生混凝土组合剪力墙与端柱14连接时,伸出墙体的水平分布钢筋应与端柱上预埋的水平向拉结筋12可靠连接;端柱可以采用预制构件,也可以采用现浇构件;<3> As shown in Figure 11 to Figure 12, when the assembled built-in steel pipe and GFRP pipe recycled concrete composite shear wall is connected to the end column 14, the horizontally distributed reinforcement protruding from the wall should be in line with the horizontal tension embedded on the end column Reinforcements 12 are reliably connected; end columns can be prefabricated or cast-in-place components;

<4>钢管、钢筋连接完毕后,在墙与墙、墙与端柱、墙与基础等拼接接头处支设模板并浇筑混凝土;后浇混凝土强度应比预制剪力墙构件所采用的再生混凝土强度提高一个强度等级,且所采用的混凝土应具有早强性;<4> After the steel pipes and steel bars are connected, formwork is supported and concrete is poured at the splicing joints of walls and walls, walls and end columns, walls and foundations; the strength of post-cast concrete should be higher than that of recycled concrete used in prefabricated shear wall components The strength is increased by one strength level, and the concrete used should have early strength;

<5>在装配式内置钢管和GFRP管再生混凝土组合剪力墙的内置管材内部浇筑混凝土,混凝土强度等级应比预制构件所采用的再生混凝土强度等级提高一级;混凝土浇筑至距管材顶面300-500mm处,并应对混凝土表面进行拉毛处理。<5> Concrete is poured inside the built-in pipe of the prefabricated built-in steel pipe and GFRP pipe recycled concrete composite shear wall, and the strength grade of the concrete should be one level higher than that of the recycled concrete used in the prefabricated components; the concrete is poured to a distance of 300 from the top surface of the pipe -500mm, and the concrete surface should be roughened.

当剪力墙体构件安装就位且后浇混凝土达到设计强度后,在墙体预设的梁托或板托8上进行梁板的架设;对于按照1倍层高度预制的墙体构件,可直接在墙体顶部进行梁板架设施工。After the shear wall components are installed in place and the post-cast concrete reaches the design strength, erect the beams and slabs on the prefabricated girders or plate brackets 8 of the wall; The beam and slab erection work is carried out directly on top of the wall.

Claims (9)

1. steel pipe built in a kind of assembled and GFRP pipe regeneration concrete compound shear walls, including steel bar stress, built-in pipe and Wrap up the concrete that they form precast wall body, it is characterised in that:The built-in pipe includes built-in steel pipe and built-in GFRP pipes, mixes Solidifying soil is regeneration concrete.
2. steel pipe built in assembled according to claim 1 and GFRP pipe regeneration concrete compound shear walls, its feature exist In:When the precast wall body thickness is less than 500mm, precast wall body along short transverse according to 2 times of floor heights split it is prefabricated and The side of wall sets corbel or plate support;When the precast wall body thickness is more than 500mm, precast wall body is along short transverse according to 1 times Floor height split prefabricated.
3. steel pipe built in assembled according to claim 2 and GFRP pipe regeneration concrete compound shear walls, its feature exist In:The built-in outer wall of steel pipe lays Welded-Stud Conectors, and welding of peg sets GFRP shearing resistances to connect in tube wall, built-in GFRP pipe outer walls Fitting.
4. steel pipe built in assembled according to claim 3 and GFRP pipe regeneration concrete compound shear walls, its feature exist In:The built-in pipe is arranged in parallel along precast wall body width, steel pipe built in the arrangement of precast wall body width both ends, adjacent built-in The center spacing of pipe is 2D-5D, and D is the external diameter of external diameter smaller in built-in steel pipe and built-in GFRP pipes.
5. steel pipe built in assembled according to claim 4 and GFRP pipe regeneration concrete compound shear walls, its feature exist In:The steel bar stress includes vertical reinforcement and horizontal distribution reinforcing bar, and the spacing of vertical reinforcement and horizontal distribution reinforcing bar should not be big In 300mm, steel tie should be set, between steel tie distribution between the reinforced mesh of vertical reinforcement and horizontal distribution reinforcing bar composition Away from for 100-200mm.
6. steel pipe built in assembled according to claim 5 and GFRP pipe regeneration concrete compound shear walls, its feature exist In:The built-in steel pipe, built-in GFRP pipes, vertical reinforcement, horizontal distribution reinforcing bar are stretched out outside precast wall body;The precast wall body Width both ends set U-shaped splicing groove along short transverse, are evenly arranged U-shaped tension rib in groove, the diameter of U-shaped steel tie is not less than 12mm and it is secondary enter wall in length meet that anchoring requires, the spacing of U-shaped steel tie not should be greater than between horizontal distribution reinforcing bar Away from.
7. steel pipe built in assembled according to claim 6 and GFRP pipe regeneration concrete compound shear walls, its feature exist In:Regeneration concrete concrete waste material as caused by production prefabricated components is process, and its intensity is not less than C40.
8. the construction party of steel pipe built in assembled according to claim 7 and GFRP pipe regeneration concrete compound shear walls Method, it is characterised in that operation is carried out as follows:
<1>In the horizontal direction, by the level of steel pipe built in two panels assembled and GFRP pipe regeneration concrete combined shear wall members Distribution bar connects, and the U-shaped tension rib in the U-shaped splicing groove of adjacent two panels shear wall is interlaced, and the cloth in intersecting area Put and be no less than 2 vertical joint bars;
<2>In short transverse, steel pipe built in two panels assembled and GFRP pipe regeneration concrete combined shear wall members are entering luggage During with construction, the built-in steel pipe in upper and lower two panels shear wall and built-in GFRP pipes are attached positioning first;Meanwhile upper and lower two Vertical reinforcement in piece shear wall is reliably connected;When precast shear wall component is located at structure bottom, wall joint it is vertical Reinforcing bar and tubing reinforcing bar pre-buried with the basis of and tubing are reliably connected;
<3>When steel pipe built in assembled and GFRP pipe regeneration concrete compound shear walls are connected with newel post, the water of wall is stretched out Flat distribution bar is reliably connected with default level in newel post to steel tie;
<4>After steel pipe, bar connecting, supporting module and poured at wall and wall, wall and newel post, wall and basic joints Concrete;
<5>The casting concrete inside the built-in tubing of steel pipe built in assembled and GFRP pipe regeneration concrete compound shear walls.
9. the construction party of steel pipe built in assembled according to claim 8 and GFRP pipe regeneration concrete compound shear walls Method, it is characterised in that step<4>And step<5>In the strength grade of concrete that pours than prefabricated components used by regenerate coagulation Native strength grade improves one-level.
CN201710788522.6A 2017-09-05 2017-09-05 Steel pipe built in assembled and GFRP pipe regeneration concrete compound shear walls and its construction method Pending CN107476470A (en)

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CN108049533A (en) * 2017-12-19 2018-05-18 苏州市世好建材新技术工程有限公司 A kind of construction wall understructure
CN108560766A (en) * 2018-01-11 2018-09-21 三箭建设工程集团有限公司 It is a kind of bilayer steel construction build core wall
CN109779384A (en) * 2019-01-28 2019-05-21 游家良 Integral type concrete earthen wall
CN111799722A (en) * 2020-07-08 2020-10-20 国网江苏省电力有限公司连云港供电分公司 A kind of GFRP light-weight prefabricated cable pipe and its construction method
CN112982721A (en) * 2021-02-05 2021-06-18 方圆建设集团有限公司 Novel assembled hollow shear wall structure
CN113026996A (en) * 2021-03-24 2021-06-25 中建八局第四建设有限公司 Assembled steel bone shear wall structure
CN113356172A (en) * 2021-06-22 2021-09-07 广东省水利水电第三工程局有限公司 Construction structure and construction method for building ship lock empty box structure
CN114575492A (en) * 2022-04-01 2022-06-03 中土集团华南建设有限公司 Prefabricated wall panel for spliced wall
CN114673279A (en) * 2022-04-01 2022-06-28 中土集团华南建设有限公司 Splicing wall body of prefabricated wallboard
CN114809373A (en) * 2022-04-01 2022-07-29 中土集团华南建设有限公司 Splicing type construction method of wall

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CN108049533A (en) * 2017-12-19 2018-05-18 苏州市世好建材新技术工程有限公司 A kind of construction wall understructure
CN108560766A (en) * 2018-01-11 2018-09-21 三箭建设工程集团有限公司 It is a kind of bilayer steel construction build core wall
CN109779384A (en) * 2019-01-28 2019-05-21 游家良 Integral type concrete earthen wall
CN111799722A (en) * 2020-07-08 2020-10-20 国网江苏省电力有限公司连云港供电分公司 A kind of GFRP light-weight prefabricated cable pipe and its construction method
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CN114575492A (en) * 2022-04-01 2022-06-03 中土集团华南建设有限公司 Prefabricated wall panel for spliced wall
CN114673279A (en) * 2022-04-01 2022-06-28 中土集团华南建设有限公司 Splicing wall body of prefabricated wallboard
CN114809373A (en) * 2022-04-01 2022-07-29 中土集团华南建设有限公司 Splicing type construction method of wall
CN114809373B (en) * 2022-04-01 2023-02-17 中国土木工程集团有限公司 Splicing type construction method of wall
CN114673279B (en) * 2022-04-01 2023-03-24 中国土木工程集团有限公司 Splicing wall body of prefabricated wallboard
CN114575492B (en) * 2022-04-01 2023-03-24 中国土木工程集团有限公司 Prefabricated wall panel for spliced wall

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