CN107254884A - A kind of detachable prefabricated assembled concrete-filled steel square tubular column pin node - Google Patents

A kind of detachable prefabricated assembled concrete-filled steel square tubular column pin node Download PDF

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Publication number
CN107254884A
CN107254884A CN201710628066.9A CN201710628066A CN107254884A CN 107254884 A CN107254884 A CN 107254884A CN 201710628066 A CN201710628066 A CN 201710628066A CN 107254884 A CN107254884 A CN 107254884A
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screw
steel
concrete
column
steel pipe
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刘艳芝
康黎静
李智
崔鹏飞
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Hunan University
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Hunan University
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/42Foundations for poles, masts or chimneys
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38Connections for building structures in general
    • E04B1/41Connecting devices specially adapted for embedding in concrete or masonry
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38Connections for building structures in general
    • E04B1/41Connecting devices specially adapted for embedding in concrete or masonry
    • E04B1/4157Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38Connections for building structures in general
    • E04B1/41Connecting devices specially adapted for embedding in concrete or masonry
    • E04B1/4157Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head
    • E04B1/4164Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head with an adjustment sleeve

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

本发明公开了一种可拆卸预制装配式方钢管混凝土柱脚节点,包括钢管混凝土柱与钢筋混凝土基础,其中方钢管混凝土柱端部再焊连接底板,底板内侧焊接有高强螺杆,作为抗剪件与基础预埋波纹套管相连,同时焊接螺杆外包塑料薄膜。钢管底板外侧预留螺孔,用于拼接锚栓与底板相连。装配时将连接螺杆通过端板预留螺孔拧入穿心内螺纹钢套管上端,实现钢管混凝土柱与基础之间的拼接。当钢管混凝土柱拆卸和更换时,将螺杆拧出,剪力件取出,清除波纹套管内高强浇注料,即可。本发明使用的所有构件均采用现场装配连接,减少了现场焊接工作和模板工程,提高了建筑工业化装配效率,体现了建筑构件节能环保、可拆卸的新型建筑理念。

The invention discloses a detachable and prefabricated square steel pipe concrete column base node, which comprises a steel pipe concrete column and a reinforced concrete foundation, wherein the end of the square steel pipe concrete column is welded to connect to the bottom plate, and the inner side of the bottom plate is welded with a high-strength screw as a shearing member It is connected with the foundation pre-embedded corrugated casing, and the welding screw is covered with plastic film. Screw holes are reserved on the outer side of the steel pipe bottom plate for splicing anchor bolts to connect with the bottom plate. When assembling, the connecting screw is screwed into the upper end of the inner threaded steel casing through the reserved screw hole of the end plate to realize the splicing between the steel pipe concrete column and the foundation. When the steel tube concrete column is disassembled and replaced, screw out the screw, take out the shear member, and remove the high-strength castable in the corrugated casing. All components used in the present invention are assembled and connected on site, which reduces on-site welding work and template engineering, improves the efficiency of building industrial assembly, and embodies the new architectural concept of energy saving, environmental protection and detachable building components.

Description

一种可拆卸预制装配式方钢管混凝土柱脚节点A detachable prefabricated square steel tube concrete column foot joint

技术领域technical field

本发明属于工程结构技术领域,具体适用于中高层建筑结构中方钢管混凝土柱与基础之间现场拼接作业领域。The invention belongs to the technical field of engineering structures, and is particularly applicable to the field of on-site splicing operations between square steel pipe concrete columns and foundations in middle and high-rise building structures.

背景技术Background technique

我国建筑施工主要以现场施工为主,这种传统的生产方式工业化程度不高、设计建造比较粗放、建筑产品质量不稳定、建设效率低、劳动力需求量大、材料损耗和建筑垃圾量大、资源和能源消耗较大,不能满足节能环保的可持续发展建设要求。随着我国“建筑工业化、住宅产业化”进程的加快,住宅工业产业化的趋势日渐明显,建筑生产方式正在进行着一场革命,即逐渐扩大新型装配式建筑的建设,新型装配式钢筋混凝土结构的应用重新成为当前研究热点之一。my country's building construction is mainly based on on-site construction. This traditional production method is not highly industrialized, the design and construction are relatively extensive, the quality of construction products is unstable, the construction efficiency is low, the demand for labor is large, the loss of materials and the amount of construction waste And energy consumption is relatively large, can not meet the sustainable development construction requirements of energy conservation and environmental protection. With the acceleration of the process of "construction industrialization and housing industrialization" in our country, the trend of housing industrialization is becoming more and more obvious, and the construction production method is undergoing a revolution, that is, gradually expanding the construction of new prefabricated buildings, new prefabricated reinforced concrete structures The application has become one of the current research hotspots again.

钢管混凝土柱具有下列基本特点:钢管混凝土结构作为一种新型组合结构,能够有效地发挥钢材和混凝土两种材料的优点、施工方便、便于装配化等特点,正被越来越多地应用于我国的重大工程建设中,尤其是钢管混凝土柱组成的组合框架已大量用于高层及超高层建筑结构中,获得显著的技术经济效益和社会效益。鉴于此,发明人对可拆卸的装配式钢管混凝土柱进行了深入研究,遂由本案产生。Concrete-filled steel tube columns have the following basic characteristics: As a new type of composite structure, the steel-filled steel tube concrete structure can effectively utilize the advantages of steel and concrete, and is convenient for construction and assembly. It is being increasingly used in my country In the construction of major projects, especially the composite frame composed of steel pipe concrete columns has been widely used in high-rise and super high-rise building structures, and has obtained significant technical, economic and social benefits. In view of this, the inventor has carried out in-depth research to the detachable fabricated steel pipe concrete column, then produced by this case.

发明内容Contents of the invention

本发明提供了一种构造简单、节能环保、安装便捷高效、便于拆卸、美观坚固的可拆卸的装配式钢管混凝土柱脚节点。The invention provides a detachable assembled steel pipe concrete column base node with simple structure, energy saving and environmental protection, convenient and efficient installation, convenient disassembly, beautiful appearance and firmness.

本发明是通过以下技术方案实现的:The present invention is achieved through the following technical solutions:

本发明提供了一种所述组合柱脚包括基础和预制钢管混凝土柱,结构体系主要构件包括钢管混凝土柱、高强螺杆、柱端板、塑料薄膜、预留螺孔、预埋波纹套管、穿心内螺纹钢套筒、上端连接螺杆、下端螺杆、钢锚板、螺帽、钢筋。The invention provides a composite column base including a foundation and a prefabricated steel tube concrete column, and the main components of the structural system include a steel tube concrete column, a high-strength screw, a column end plate, a plastic film, reserved screw holes, a pre-embedded corrugated sleeve, and a Threaded steel sleeve in the heart, connecting screw at the upper end, screw at the lower end, steel anchor plate, nut, and steel bar.

所述可拆卸的装配式钢管混凝土柱脚拼接节点,是在基础预埋的波纹套管内浇注自密实水泥基,将钢管混凝土柱端部的抗剪件插入浇注有自密实水泥基的波纹套管内,其次将连接螺杆通过端板预留螺孔拧入穿心内外螺纹钢套管上端,组成锚栓。当需要拆卸钢管混凝土柱和基础时,将螺杆拧出,剪力件取出,清除波纹套管内的自密实水泥基,即可将钢管混凝土柱拆卸和更换。The detachable assembled concrete-filled steel pipe column base splicing node is to pour self-compacting cement base in the corrugated casing pre-buried in the foundation, and insert the shear parts at the end of the steel pipe concrete column into the corrugated casing poured with self-compacting cement base , and secondly screw the connecting screw into the upper end of the inner and outer threaded steel casing through the reserved screw hole of the end plate to form an anchor bolt. When it is necessary to disassemble the concrete-filled steel pipe column and the foundation, unscrew the screw, take out the shear member, and remove the self-compacting cement base in the corrugated casing, then the concrete-filled steel pipe column can be disassembled and replaced.

所述抗剪件为钢管底板内侧焊接的高强螺杆组成,作为抗剪件与基础预埋波纹套管相连,同时焊接螺杆外包塑料薄膜,以便降低螺杆与波纹套管内浇筑自密实水泥基的粘结力,从而组成抗剪连接件。使其仅用于抵抗节点的剪力、便于拆卸和修复。The shear parts are composed of high-strength screws welded on the inner side of the steel pipe bottom plate, which are connected to the pre-embedded corrugated casing of the foundation as the shear parts. force to form a shear connector. Make it only used to resist the shear force of the joint, easy to disassemble and repair.

所述锚栓主要包括下端预埋螺杆、穿心内螺纹钢套筒和上端连接螺杆,其中下端螺杆带有钢锚板和螺帽,拧入穿心内螺纹钢套管组成特制螺孔组件预埋于基础内,装配时则将连接螺杆通过端板预留螺孔拧入穿心内螺纹钢套管上端,拼接成锚栓,用于抵抗节点的弯矩、便于拆卸和更换。The anchor bolt mainly includes a lower end pre-embedded screw, a threaded inner threaded steel sleeve and an upper connecting screw, wherein the lower end screw has a steel anchor plate and a nut, which is screwed into a threaded inner threaded steel sleeve to form a special screw hole assembly Buried in the foundation, during assembly, the connecting screw is screwed into the upper end of the threaded steel casing through the end plate through the reserved screw hole, and spliced into an anchor bolt, which is used to resist the bending moment of the node and is easy to disassemble and replace.

至此,本发明技术方案具体为,提供一种可快速组装和拆卸的装配式钢管混凝土柱脚拼接节点。So far, the technical solution of the present invention is specifically to provide a fast-assembled and disassembled fabricated steel pipe concrete column base splicing node.

与现有技术相比,本发明的有益效果是:Compared with prior art, the beneficial effect of the present invention is:

1、本发明采用钢管混凝土柱与基础的拼接,所有构件均在工厂加工完成,运输至施工工地后,可在施工现场装配连接,减少了现场焊接工作和模板工作,保证了现场施工质量,提高了建筑工业化装配效率。1. The present invention adopts the splicing of the steel pipe concrete column and the foundation. All components are processed in the factory. After being transported to the construction site, they can be assembled and connected at the construction site, which reduces the on-site welding work and formwork work, ensures the on-site construction quality, and improves Improve the efficiency of construction industrialization assembly.

2、本发明研发柱脚节点传力明确,抗剪键仅用于抵抗节点剪力,而锚栓则仅用于抵抗节点的弯矩,且均可拆卸。2. The force transmission of the joints at the base of the columns developed by the present invention is clear. The shear keys are only used to resist the shear force of the joints, while the anchor bolts are only used to resist the bending moment of the joints, and they can be disassembled.

3、该柱与基础连接便于拆卸,当需要拆除和更换柱子时,将螺杆拧出,剪力件取出,即可将钢管混凝土柱拆卸和更换。3. The column is connected to the foundation for easy disassembly. When the column needs to be removed and replaced, the screw rod is unscrewed and the shear member is taken out to disassemble and replace the steel tube concrete column.

附图说明Description of drawings

图1为本发明的柱脚拼接整体图;Fig. 1 is the splicing overall figure of column foot of the present invention;

图2为本发明的预制钢管混凝土柱;Fig. 2 is the prefabricated steel tube concrete column of the present invention;

图3为本发明的锚栓;Fig. 3 is the anchor bolt of the present invention;

图4为本发明的抗剪连接件;Fig. 4 is the shear connector of the present invention;

图5为本发明的预制钢管混凝土柱端板;Fig. 5 is the prefabricated steel tube concrete column end plate of the present invention;

图6为本发明的预制钢筋混凝土基础。Fig. 6 is the prefabricated reinforced concrete foundation of the present invention.

在图中:In the picture:

1-钢管混凝土柱, 2-柱端板, 3-高强螺杆,1-Concrete Steel Tube Column, 2-Column End Plate, 3-High Strength Screw,

4-塑料薄膜, 5-预留螺孔, 6-预埋波纹套管,4-plastic film, 5-reserved screw holes, 6-embedded corrugated sleeve,

7-穿心内螺纹钢套, 8-上端连接螺杆, 9-钢锚板,7-threaded steel sleeve through the core, 8-connecting screw at the upper end, 9-steel anchor plate,

10-下端螺杆 11-螺帽, 12-预制钢筋混凝土基础。10-bottom screw rod 11-nut, 12-prefabricated reinforced concrete foundation.

13-钢筋。13 - Steel bars.

具体实施方式detailed description

以下结合附图和具体安装方法对本发明做进一步详细说明。结构体系主要构件包括钢管混凝土柱1、高强螺杆2、柱端板3、塑料薄膜4、预留螺孔5、预埋波纹套管6、穿心内螺纹钢套筒7、上端连接螺杆8、钢锚板9,下端螺杆10,螺帽11,预制钢筋混凝土基础12,本发明结构的施工顺序如下为:The present invention will be described in further detail below in conjunction with the accompanying drawings and specific installation methods. The main components of the structural system include steel pipe concrete columns 1, high-strength screws 2, column end plates 3, plastic films 4, reserved screw holes 5, pre-embedded corrugated sleeves 6, threaded steel sleeves through the core 7, upper connecting screws 8, Steel anchor plate 9, lower end screw rod 10, nut 11, prefabricated reinforced concrete foundation 12, the construction sequence of structure of the present invention is as follows:

1、除需要现场对基础预埋波纹套管浇筑自密实水泥基,所有组成构件均在工厂预制完成,对于柱截面尺寸和钢管壁厚、柱端板、锚栓数量与间距以及混凝土基础的配置钢筋应满足构造要求。方钢管混凝土柱1端部焊有柱端板3,柱端板3内侧则焊接有高强螺杆2,同时焊接螺杆外包塑料薄膜4,外侧预留螺孔5。下端螺杆10带有钢锚板9和螺帽11,拧入穿心内螺纹钢套管7组成特制螺孔组件与预埋波纹套管6预埋于钢筋混凝土基础内12。其中钢筋混凝土基础,为避免混凝土承压损坏,此发明对钢筋混凝土基础采取约束混凝土或是加加强钢筋13来提高承载力。其次为避免抗拔件周围混凝土基础的劈裂破坏和钢锚板周围混凝土的冲剪破坏,此发明在抗拔件周围和钢锚板周围设置加强钢筋13;1. In addition to the need to pour self-compacting cement base on the pre-embedded corrugated casing of the foundation on site, all components are prefabricated in the factory. For the column section size and steel pipe wall thickness, column end plate, anchor bolt number and spacing, and the configuration of the concrete foundation Steel bars shall meet the structural requirements. The end of the square steel pipe concrete column 1 is welded with a column end plate 3, and the inner side of the column end plate 3 is welded with a high-strength screw 2. At the same time, the welding screw is covered with a plastic film 4, and a screw hole 5 is reserved outside. The lower screw rod 10 has a steel anchor plate 9 and a nut 11, which is screwed into the threaded steel casing 7 to form a special screw hole assembly and the pre-embedded corrugated casing 6 is pre-embedded in the reinforced concrete foundation 12. Wherein the reinforced concrete foundation, in order to avoid concrete pressure damage, this invention adopts restraint concrete or adds reinforcing steel bar 13 to the reinforced concrete foundation to improve bearing capacity. Secondly, for avoiding the splitting damage of the concrete foundation around the pull-out parts and the punching shear damage of the concrete around the steel anchor plate, this invention arranges reinforcement bars 13 around the pull-out parts and around the steel anchor plate;

2、先将钢管混凝土柱1吊装到正确位置,待柱端板3内侧已外包塑料薄膜的高强螺杆2插入浇筑自密实水泥基波纹套管内后,用垫片和螺母将连接螺杆8通过端板预留螺孔5拧入穿心内螺纹钢套管上端7,拼接成锚栓;(图2和图3所示)2. First hoist the steel pipe concrete column 1 to the correct position, after inserting the high-strength screw 2 covered with plastic film inside the column end plate 3 into the poured self-compacting cement-based corrugated casing, use gaskets and nuts to pass the connecting screw 8 through the end plate The reserved screw hole 5 is screwed into the upper end 7 of the threaded steel casing through the core, and spliced into an anchor bolt; (shown in Figure 2 and Figure 3)

3、若需对预制钢管混凝土柱1和钢筋混凝土基础12进行拆改,可通过拧出连接螺杆8,将波纹套管内自密实水泥基砸掉,使得钢筋混凝土上柱2和下柱3钢管混凝土柱1和钢筋混凝土基础12分离。重复1~2安装步骤,即可完成钢管混凝土柱的再次拼装。3. If it is necessary to disassemble and modify the prefabricated concrete-filled steel tube column 1 and the reinforced concrete foundation 12, the self-compacting cement base in the corrugated casing can be smashed out by unscrewing the connecting screw 8, so that the reinforced concrete upper column 2 and the lower column 3 steel-filled concrete Column 1 and reinforced concrete foundation 12 are separated. Repeat 1-2 installation steps to complete the reassembly of the steel pipe concrete column.

上述实施例和图示并非限定本发明专利的产品形态和式样,任何所属技术领域的普通技术人员对其所做的适当变化或修饰,皆应视为不脱离本发明专利的专利范畴。The above-mentioned embodiments and diagrams do not limit the product form and style of the patent of the present invention, and any appropriate changes or modifications made by those skilled in the art shall be deemed as not departing from the scope of the patent of the present invention.

本发明属于工程结构技术领域,具体适用于多高层装配式建筑结构中钢筋混凝土柱与柱之间现场拼接作业领域。The invention belongs to the technical field of engineering structures, and is particularly applicable to the field of on-site splicing operations between reinforced concrete columns in multi-high-rise assembled building structures.

Claims (6)

1.一种可拆卸预制装配式方钢管混凝土柱脚节点,所述柱脚节点主要包括预制钢管混凝土柱(1)与预制钢筋混凝土基础(12)。其特征在于:所述预制钢管混凝土柱主要由高强螺杆(2)、柱端板(3)、塑料薄膜(4)、预留螺孔(5)组成;所述预制钢筋混凝土基础包括预埋波纹套管(6)、穿心内螺纹钢套筒(7)、钢锚板(9)、下端螺杆(10)、螺帽(11)、钢筋(13)组成。1. A detachable prefabricated square concrete-filled steel tube column base node, the column base node mainly includes a prefabricated steel tube concrete column (1) and a prefabricated reinforced concrete foundation (12). It is characterized in that: the prefabricated steel pipe concrete column is mainly composed of high-strength screw rods (2), column end plates (3), plastic film (4), and reserved screw holes (5); the prefabricated reinforced concrete foundation includes embedded corrugated Sleeve (6), core threaded steel sleeve (7), steel anchor plate (9), lower end screw rod (10), nut (11), reinforcing bar (13) form. 2.根据权利要求1所述的一种可拆卸预制装配式方钢管混凝土柱脚节点,其特征在于:基础预埋的波纹套管(6)内浇注自密实水泥基,将钢管混凝土柱端部的抗剪件插入浇筑有自密实水泥基的波纹套管内,其次将上端连接螺杆(8)通过端板预留螺孔(5)拧入穿心内外螺纹钢套管(7)上端,组成锚栓。当需要拆卸钢管混凝土柱(1)和钢筋混凝土基础(13)时,将上端连接螺杆(8)拧出,剪力件取出,清除波纹套管(6)内的自密实水泥基,即可将钢管混凝土柱(1)拆卸和更换。2. A detachable prefabricated square concrete-filled steel tube column base node according to claim 1, characterized in that: the foundation pre-embedded corrugated sleeve (6) is poured with self-compacting cement base, and the end of the steel tube concrete column The shear parts are inserted into the corrugated casing poured with self-compacting cement base, and then the upper connecting screw (8) is screwed into the upper end of the inner and outer threaded steel casing (7) through the screw hole (5) reserved on the end plate to form an anchor bolt. When it is necessary to disassemble the steel pipe concrete column (1) and the reinforced concrete foundation (13), unscrew the upper connecting screw (8), take out the shear member, remove the self-compacting cement base in the corrugated casing (6), and then the Concrete-filled steel tube columns (1) are removed and replaced. 3.根据权利要求1所述的一种可拆卸预制装配式方钢管混凝土柱脚节点,其特征在于:所述钢筋混凝土基础在抗拔件周围和钢锚板周围设置加强钢筋(13)。3. A detachable prefabricated square concrete-filled steel tube column foot node according to claim 1, characterized in that: the reinforced concrete foundation is provided with reinforcing steel bars (13) around the pullout parts and steel anchor plates. 4.根据权利要求1所述的一种装配式方钢管混凝土柱脚节点,其特征在于:所述抗剪件为钢管底板内侧焊接的高强螺杆(2),作为抗剪件与基础预埋波纹套管(6)相连,同时焊接螺杆外包塑料薄膜(4),以便降低高强螺杆(2)与波纹套管(6)内浇筑自密实水泥基的粘结力,从而组成抗剪连接件。使其仅用于抵抗节点的剪力、便于拆卸。4. An assembled square concrete-filled steel tube column foot node according to claim 1, characterized in that: the shear member is a high-strength screw (2) welded to the inner side of the steel pipe bottom plate, as the shear member and the foundation embedded corrugation The sleeves (6) are connected, and the welding screw is covered with a plastic film (4), so as to reduce the bonding force between the high-strength screw (2) and the self-compacting cement base poured in the corrugated sleeve (6), thereby forming a shear joint. It is only used to resist the shear force of the joint and facilitate disassembly. 5.根据权利要求1所述的一种可拆卸预制装配式方钢管混凝土柱脚节点,其特征在于钢管底板外侧预留螺孔(5),用于拼接锚栓与钢筋混凝土基础(12)相连。其中,柱端板的预留螺孔(5)应与穿心内螺纹钢套筒(7)相对应,以保证上端连接螺杆顺利的拧入穿心内螺纹钢套筒中。5. A detachable prefabricated square steel pipe concrete column base node according to claim 1, characterized in that screw holes (5) are reserved outside the steel pipe bottom plate for splicing anchor bolts to connect with reinforced concrete foundations (12) . Wherein, the reserved screw hole (5) of the column end plate should correspond to the threaded steel sleeve (7) through the core, so as to ensure that the connecting screw at the upper end is smoothly screwed into the internal threaded steel sleeve through the core. 6.根据权利要求1所述的一种可拆卸预制装配式方钢管混凝土柱脚节点,其特征在于:所述拼接锚栓包括下端预埋螺杆(10)、穿心内螺纹钢套筒(7)和上端连接螺杆(8),其中下端螺杆(10)带有钢锚板(9)和螺帽(11),拧入穿心内螺纹钢套管(7)组成特制螺孔组件预埋于钢筋混凝土基础(12)内,装配时则将上端连接螺杆(8)通过端板预留螺孔(5)拧入穿心内螺纹钢套管(7)上端,实现钢管混凝土柱(1)与钢筋混凝土基础(12)之间的拼接。6. A detachable prefabricated square concrete-filled steel tube column base node according to claim 1, characterized in that: the spliced anchor bolt includes a lower end embedded screw (10), a threaded steel sleeve (7 ) and the upper connecting screw (8), wherein the lower screw (10) has a steel anchor plate (9) and a nut (11), which is screwed into the threaded steel sleeve (7) to form a special screw hole assembly embedded in the In the reinforced concrete foundation (12), when assembling, the upper connecting screw rod (8) is screwed into the upper end of the threaded steel casing (7) through the end plate through the reserved screw hole (5), so as to realize the connection between the steel pipe concrete column (1) and the Splicing between reinforced concrete foundations (12).
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