WO2022011759A1 - 内置frp筋连接装置的双钢管混凝土梁柱节点及安装方法 - Google Patents

内置frp筋连接装置的双钢管混凝土梁柱节点及安装方法 Download PDF

Info

Publication number
WO2022011759A1
WO2022011759A1 PCT/CN2020/107249 CN2020107249W WO2022011759A1 WO 2022011759 A1 WO2022011759 A1 WO 2022011759A1 CN 2020107249 W CN2020107249 W CN 2020107249W WO 2022011759 A1 WO2022011759 A1 WO 2022011759A1
Authority
WO
WIPO (PCT)
Prior art keywords
steel pipe
double
pipe
frp
inner support
Prior art date
Application number
PCT/CN2020/107249
Other languages
English (en)
French (fr)
Inventor
牟犇
周万求
金祖权
刘文锋
Original Assignee
青岛理工大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 青岛理工大学 filed Critical 青岛理工大学
Publication of WO2022011759A1 publication Critical patent/WO2022011759A1/zh

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/185—Connections not covered by E04B1/21 and E04B1/2403, e.g. connections between structural parts of different material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/30—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/30—Columns; Pillars; Struts
    • E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • E04B2001/2415—Brackets, gussets, joining plates
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • E04B2001/2418—Details of bolting
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • E04B2001/2451—Connections between closed section profiles
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B2001/2466—Details of the elongated load-supporting parts
    • E04B2001/2478—Profile filled with concrete

Definitions

  • the invention relates to the field of building structures, in particular to a double-steel concrete beam-column joint and an installation method of the joint.
  • CFST columns are widely used in high-rise and super high-rise buildings.
  • double CFST columns are not only effective The self-weight of the structure is reduced, and it also has very good mechanical properties, so it has great development potential and practicability.
  • the double-pipe concrete column joint is the key part of column-to-column, beam-to-column connection, which is very important for the safety and structural performance of the entire structure.
  • Most of the existing connection methods are direct welding of steel pipes, which requires high construction on site, poor quality control, and large welding residual stress. During earthquakes, local buckling of steel pipes may occur, resulting in excessive deformation of joints and structural failure. .
  • the technical effect of the present invention can overcome the shortcomings of the existing double-pipe concrete beam-column joint connection mode, and provide a double-pipe concrete beam-column joint with a built-in FRP reinforcement connecting device.
  • the double steel tube concrete beam-column node with the built-in FRP bar connection device of the present invention includes double steel tube columns, I-beams, node connectors, inner braces and outer ring plates;
  • the double steel pipe column includes an inner steel pipe and an outer steel pipe, the inner steel pipe is placed in the outer steel pipe, and the outer proximal node end of the outer steel pipe is vertically fixed with a connecting ear I;
  • the node connector includes a connecting inner pipe and a connecting outer disk, the connecting inner pipe and the connecting outer disk are both round steel pipes, the connecting inner pipe is placed in the connecting outer disk and the two are connected by a bar-shaped connecting piece, and both ends of the connecting inner pipe extend.
  • the protruding part is provided with a through hole, the inner diameter of the connecting jacket disk is larger than the outer diameter of the outer steel pipe, the outer middle position of the connecting jacket disk is vertically fixed with a connecting lug II, and the upper and lower sides of the connecting lug II are provided with connecting lugs II.
  • the inner support is a columnar structure with bolt holes evenly distributed along the circumference at both ends;
  • the outer ring plate includes a horizontal portion and an annular portion that are perpendicular to each other;
  • the upper and lower double steel pipe columns are connected by node connectors and inner braces.
  • the two ends of the inner braces are inserted into the upper and lower inner steel pipes respectively. in the groove of the outer tray;
  • the double steel tube column and the I-beam are connected by two sets of symmetrical upper and lower outer ring plates, the annular part of the outer ring plate is attached to the outer steel pipe, and the FRP bars pass through the annular part, the outer steel pipe, the connecting inner pipe and the inner steel pipe in turn.
  • the web of the I-beam After being fixed in the bolt holes of the inner support, the web of the I-beam is fixedly connected with the connecting ear I and the connecting ear II, and the wing plate of the I-beam is fixedly connected with the horizontal part.
  • the web of the I-beam is connected with the connecting lugs I and the connecting lugs II through the connecting plate I, and they are fixed by bolts, which strengthens the connection between the upper and lower outer steel pipes while connecting the webs.
  • the wing plate of the I-beam and the horizontal part of the outer ring plate are connected by connecting plate II, and they are fixed by bolts.
  • both ends of the FRP rib are provided with external threads, one end is threadedly connected with the inner support, and the other end is mounted with a nut.
  • the inner support includes circular members at both ends and a connecting rod in the middle, the circular members at both ends are connected by the connecting rods, and bolt holes are uniformly distributed on the circular member along the circumference.
  • the height of the inner support is the same as the height of the connecting inner tube, and the bolt holes at both ends of the inner support correspond to the through holes connecting the two ends of the inner tube.
  • FRP is a high-quality plastic composite material, and preferably, the FRP bar is a carbon fiber reinforced composite material.
  • the concrete cast in the double steel pipe is steel fiber concrete.
  • Another object of the present invention is to provide a method for installing the above node, comprising the following steps:
  • Step 1 Install the node connector on the top of the lower double steel pipe column, so that the inner steel pipe is inserted into the connecting inner pipe, the outer steel pipe is inserted into the connecting outer sleeve, and the connecting ear I of the outer steel pipe is inserted into the groove connecting the outer sleeve;
  • the second step install the bottom of the inner support in the inner steel pipe of the lower double steel pipe, and thread the FRP bars through the outer steel pipe, connect the inner pipe, and the inner steel pipe in turn, and then screw them into the threaded holes below the inner support;
  • Step 3 Install the upper double steel pipe column above the node connector, so that the upper end of the inner support is inserted into the upper inner steel pipe, the lower end of the upper inner steel pipe is inserted into the upper end of the connecting inner pipe, and the upper outer steel pipe is inserted into the connecting outer sleeve.
  • the connecting lugs I of the outer steel pipe are inserted into the grooves of the connecting outer casing, and the FRP bars are sequentially passed through the outer steel pipe, the connecting inner pipe, and the inner steel pipe, and then screwed into the threaded hole above the inner support;
  • Step 4 Connect the connecting ear II and the upper and lower two connecting ears I through the connecting plate I, and the connection of the upper and lower double steel pipe columns is now completed;
  • Step 5 Concrete is poured in the double steel tube column, and the poured concrete is steel fiber concrete to slow down the generation of cracks in the concrete;
  • Step 6 Install the upper and lower two sets of symmetrical outer ring plates, connect the annular part of the outer ring plate and the outer steel pipe through the inserted FRP bars, and install nuts on the ends of the FRP bars;
  • Step 7 Install the I-beam, connect the horizontal part of the wing plate and the outer ring plate through the connecting plate II, and connect the web plate with the connecting plate I.
  • the inner support of the present invention strengthens the strength of the node, provides internal support at the node, can prevent the buckling of the inner steel pipe, forms a "bamboo joint" effect in the double steel pipe column, and improves the overall strength of the column;
  • the present invention strengthens the connection between the concrete and the double steel pipe through the carbon fiber FRP bar;
  • connection lugs in the present invention make the connection between the beam and the column not isolated on the middle node connector, but connect the beam web together with the upper and lower columns and nodes to bear the vertical load of the beam end together, and At the same time, the upper and lower columns and the node connectors are connected and fixed, which greatly enhances the upper and lower connections of the columns and enhances the integrity and strength of the nodes;
  • the present invention utilizes the superior tensile performance and anti-fatigue load capacity of FRP bars to effectively improve the seismic energy dissipation capacity of the joints, and the use of steel fiber reinforced concrete can slow down the generation of cracks in the concrete, improve the shear resistance, and enhance the Safety and load-carrying capacity of the structure.
  • Fig. 1 is the structural representation of the present invention
  • Figure 2 is a schematic diagram of the structure of a double steel pipe column
  • Figure 3 is a schematic diagram of the structure of a node connector
  • Figure 4 is one of the structural schematic diagrams of the inner support
  • Fig. 5 is the second structural schematic diagram of the inner support
  • Figure 6 is a schematic diagram of the structure of the outer ring plate
  • Fig. 7 is the structure exploded view of the present invention.
  • Fig. 8 is one of partial connection schematic diagrams of the present invention.
  • Fig. 9 is the second schematic diagram of partial connection of the present invention.
  • Figure 10 is an installation step diagram
  • drawings include the following reference signs: 1, double steel pipe column; 11, inner steel pipe; 12, outer steel pipe; 13, connecting ear I; 2, I-beam; 3, node connecting piece; 31, connecting inner pipe ; 32, connecting outer disk; 33, bar connecting piece; 34, connecting ear II; 35, groove; 4, inner support; 41, circular member; 42, connecting rod; 5, outer ring plate; 51, horizontal part; 52, annular part; 53, connecting plate I; 54, connecting plate II.
  • the double steel tube concrete beam-column joint with built-in FRP reinforcement connection device of the present invention includes double steel tube column 1 , I-beam 2 , node connecting piece 3 , inner support piece 4 and outer ring plate 5 .
  • the double steel pipe column 1 includes an inner steel pipe 11 and an outer steel pipe 12.
  • the inner steel pipe and the outer steel pipe are both round steel pipes.
  • the proximal node end of the outer steel pipe is vertically fixed with a connecting lug I13, that is, the bottom of the upper outer steel pipe and the outer steel pipe are vertically fixed.
  • the outer surface of the top of the lower outer steel pipe is vertically fixed with connecting ears I13, and the number of the connecting ears I13 is consistent with the number of the I-beams 2 to be connected.
  • four I-beams 2 are connected as an example.
  • the connecting ears I13 are evenly distributed along the circumference; the bottom of the upper outer steel pipe and the top of the lower outer steel pipe are provided with FRP rib through holes for connection.
  • the node connector 3 includes a connecting inner pipe 31 and a connecting outer disk 32 .
  • the connecting inner pipe and the connecting outer disk are both round steel pipes, and the two are connected by a bar-shaped connecting piece 33 , connecting both ends of the inner pipe 31
  • the connecting jacket plate 32 extends out, and the extended part is provided with a through hole.
  • the inner diameter of the connecting jacket disk 32 is larger than the outer diameter of the outer steel pipe 12.
  • the connecting jacket disk 32 is vertically fixed with connecting ears II 34, and the upper and lower sides of the connecting ears II 34 There are grooves 35 on the connecting outer disks.
  • the inner support 4 is a columnar structure with bolt holes evenly distributed along the circumference at both ends.
  • grooves can be provided on the periphery of the inner support.
  • the height of the inner support 4 is the same as the height of the connecting inner tube 31 , and the bolt holes at both ends of the inner support 4 correspond to the through holes at both ends of the connecting inner tube 31 .
  • the outer ring plate 5 includes a horizontal portion 51 and an annular portion 52 that are perpendicular to each other.
  • the upper and lower layers of double steel pipe columns 1 are connected by a node connector 3 and an inner support 4, and the inner support 4 is inserted into the connecting inner pipe 31.
  • the lower end of the upper inner steel pipe 11 and the upper end of the lower inner steel pipe 11 Both are inserted into the hole between the inner support 4 and the connecting inner pipe 31, the outer steel pipe 12 is inserted into the connecting outer casing 32, the connecting ear I13 is inserted into the groove 35 of the connecting outer casing, and the double steel pipe column 1 and the I-beam 2 pass through.
  • the web of the I-beam 2 is connected with the connecting ear I13 and the connecting ear II34 through the connecting plate I53, and the connecting plate I53 is respectively connected with the web of the I-beam and the connecting ear I and the connecting ear II by bolts. , also strengthens the connection of the upper and lower outer steel pipes; the horizontal part 51 of the wing plate of the I-beam 2 and the outer ring plate is connected by the connecting plate II 54, and the connecting plate II 54 is respectively connected with the horizontal part of the wing plate of the I-beam and the outer ring plate Connected by bolts.
  • FRP bars are made of carbon fiber reinforced composite materials.
  • the installation method of the present invention includes the following steps:
  • Step 1 Install the node connector 3 above the lower double steel pipe column 1, insert the inner steel pipe 11 into the connecting inner pipe 31, insert the outer steel pipe 12 into the connecting jacket disk 32, and insert the connecting ear I13 of the outer steel pipe into the connecting jacket in the groove 35 of the disc;
  • the second step install the bottom of the inner support 4 in the inner steel pipe 11 of the lower double steel pipe, pass the FRP bars through the outer steel pipe 12, connect the inner pipe 31, and the inner steel pipe 11 in sequence, and then screw them into the threaded hole below the inner support 4 middle;
  • Step 3 Install the upper double steel pipe column 1 above the node connector 3, insert the upper end of the inner support 4 into the upper inner steel pipe 11, insert the lower end of the upper inner steel pipe 11 into the upper end of the connecting inner pipe 31, and insert the upper outer
  • the steel pipe 12 is inserted into the upper end of the connecting outer sleeve 32, the connecting lugs I13 of the outer steel pipe are inserted into the groove 35 of the connecting outer sleeve, and the FRP bars are sequentially passed through the outer steel pipe 12, the connecting inner pipe 31, and the inner steel pipe 11, and then screwed into the inner support 4 in the threaded hole above;
  • the fourth step connect the connecting ear II34 and the upper and lower two connecting ears I13 together through the connecting plate I53, and the connection of the upper and lower double steel pipe columns 1 is now completed;
  • the fifth step pour concrete in the double steel tube column 1, and the poured concrete is steel fiber concrete to slow down the generation of cracks in the concrete;
  • the sixth step install the upper and lower two sets of symmetrical outer ring plates 5, connect the annular portion 52 of the outer ring plate and the outer steel pipe 12 through the inserted FRP bars, and install nuts on the ends of the FRP bars;
  • Step 7 Install the I-beam 2, connect the horizontal part 51 of the wing plate and the outer ring plate through the connecting plate II54, and connect the web plate with the connecting plate I53.
  • the middle of the inner support 4 can be hollowed out, and the parts provided with bolt holes at both ends are reserved.
  • the inner support 4 includes circular members 41 at both ends and a connecting rod 42 in the middle.
  • the circular members 41 at both ends are connected by connecting rods 42 , and bolt holes are evenly distributed on the circular members 41 along the circumference.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

本发明涉及建筑结构领域，本发明的内置FRP筋连接装置的双钢管混凝土梁柱节点，包括双钢管柱、工字梁、节点连接件、内撑件和外环板；双钢管柱包括内钢管和外钢管；节点连接件包括连接内管和连接外套盘，连接内管和连接外套盘均为圆钢管；内撑件为柱状结构，两端沿圆周均布有螺栓孔；外环板包括相互垂直的水平部和环状部；上下层双钢管柱通过节点连接件和内撑件连接，内撑件的两端分别插入上下内钢管中，FRP筋依次穿过环状部、外钢管、连接内管和内钢管后固定在内撑件的螺栓孔内。本发明利用FRP筋的优越抗拉性能和抗疲劳荷载能力，有效提高了节点的抗震耗能能力，增强了结构的安全性和承载能力。

Description

内置FRP筋连接装置的双钢管混凝土梁柱节点及安装方法 技术领域
本发明涉及建筑结构领域，具体而言，涉及一种双钢管混凝土梁柱节点及该节点的安装方法。
背景技术
随着社会现代化的不断推进，建筑结构不断向更高、更大的方向发展，钢管混凝土柱，因优越的结构性能，被广泛用于高层和超高层建筑中，其中双钢管混凝土柱不仅有效的减小了结构自重，还具有非常好的力学性能，具有巨大的发展潜力和实用性。
双管混凝土柱节点处是柱与柱、梁与柱连接的关键部位，对于整个结构的安全和结构性能十分重要。现有连接方式多为钢管直接焊接，焊接现场施工要求高，且质量不好控制，焊接残余应力大，在地震作用时，可能会发生钢管的局部屈曲，导致节点的变形过大，造成结构失效。
发明内容
本发明的技术效果能够克服现有双管混凝土梁柱节点连接方式的不足,提供一种内置FRP筋连接装置的双钢管混凝土梁柱节点。
为了实现上述目的，本发明的内置FRP筋连接装置的双钢管混凝土梁柱节点，包括双钢管柱、工字梁、节点连接件、内撑件和外环板；
双钢管柱包括内钢管和外钢管，内钢管置于外钢管内，外钢管的外侧近节点端垂直固定设有连接耳Ⅰ；
节点连接件包括连接内管和连接外套盘，连接内管和连接外套盘均为圆钢管，连接内管置于连接外套盘内且二者通过条形连接件连接，连接内管的两端伸出连接外套盘，伸出的部分其上设置有通孔，连接外套盘的内径大于外钢管的外径，连接外套盘的外侧中间位置垂直固定设有连接耳Ⅱ，连接耳Ⅱ上下两侧的连接外套盘上均开有凹槽；
内撑件为柱状结构，两端沿圆周均布有螺栓孔；
外环板包括相互垂直的水平部和环状部；
上下层双钢管柱通过节点连接件和内撑件连接，内撑件的两端分别插入上下内钢管中，内钢管插入连接内管中，外钢管插入连接外套盘中，使连接耳Ⅰ插入连接外套盘的凹槽中；
双钢管柱和工字梁通过对称的上下两组外环板连接，外环板的环状部与外钢管相贴合，FRP筋依次穿过环状部、外钢管、连接内管和内钢管后固定在内撑件的螺栓孔内，工字梁的腹板与连接耳Ⅰ和连接耳Ⅱ固定连接，工字梁的翼板与水平部固定连接。
优选地，工字梁的腹板与连接耳Ⅰ和连接耳Ⅱ通过连接板Ⅰ连接，它们之间通过螺栓固定,在连接腹板的同时，加强了上下层外钢管的连接。
优选地，工字梁的翼板与外环板的水平部通过连接板Ⅱ连接，它们之间通过螺栓固定。
优选地，FRP筋两端均带有外螺纹,一端与内撑件螺纹连接，另一端安装有螺母。
优选地，内撑件包括两端的圆构件和中间的连接杆,两端的圆构件通过连接杆连接，圆构件上沿圆周均布有螺栓孔。
优选地，内撑件的高度与连接内管的高度相同，内撑件两端的螺栓孔与连接内管两端的通孔相对应。
FRP为优质塑料复合材料，优选地，FRP筋为碳纤维增强复合材料。
优选地，双钢管内浇筑的混凝土为钢纤维混凝土。
本发明的另一个目的是提供一种上述节点的安装方法，包括如下步骤：
第一步：将节点连接件安装于下层的双钢管柱的上方，使内钢管插入连接内管中，外钢管插入连接外套盘中，外钢管的连接耳Ⅰ插入连接外套盘的凹槽中；
第二步：将内撑件的底部安装于下层双钢管的内钢管中，将FRP筋依次穿过外钢管、连接内管、内钢管后旋入内撑件下方的螺纹孔中；
第三步：将上层双钢管柱安装于节点连接件上方，使内撑件的上端插入上 方内钢管内，上方的内钢管下端插入连接内管的上端中，上方的外钢管插入连接外套盘的上端中，外钢管的连接耳Ⅰ插入连接外套盘的凹槽中，将FRP筋依次穿过外钢管、连接内管、内钢管后旋入内撑件上方的螺纹孔中；
第四步：将连接耳Ⅱ和上下两个连接耳Ⅰ通过连接板Ⅰ连接到一起，至此上下层双钢管柱的连接完成；
第五步：在双钢管柱内浇筑混凝土，浇筑的混凝土为钢纤维混凝土，以减缓混凝土中裂缝的产生；
第六步：安装上下两组对称的外环板，将外环板的环状部与外钢管通过已插入的FRP筋连接，在FRP筋端部安装上螺母；
第七步：安装工字梁，将翼板与外环板的水平部通过连接板Ⅱ连接，腹板与连接板Ⅰ连接。
本发明具有以下有益效果：
(1)本发明的内撑件加强了节点强度，在节点处提供内部支撑，可以防止内部钢管屈曲，在双钢管柱内形成“竹节”作用，提高了柱子的整体强度；
(2)本发明通过碳纤维FRP筋增强了混凝土与双钢管的连接；
(3)本发明中的连接耳使梁与柱的连接不是孤立的连接在中间的节点连接件上，而是将梁腹板同上下柱和节点一同连接，一同承担梁端竖向荷载，并同时将上下柱和节点连接件连接固定，大大增强了柱的上下连接，增强了节点的整体性和强度；
(4)本发明利用FRP筋的优越抗拉性能和抗疲劳荷载能力，有效提高了节点的抗震耗能能力，使用钢纤维混凝土，则减缓了混凝土中裂缝的产生，提高抗剪性能，增强了结构的安全性和承载能力。
附图说明
图1是本发明结构示意图；
图2是双钢管柱结构示意图；
图3是节点连接件结构示意图；
图4是内撑件结构示意图之一；
图5是内撑件结构示意图之二；
图6是外环板结构示意图；
图7是本发明的结构爆炸图；
图8是本发明局部连接示意图之一；
图9是本发明局部连接示意图之二；
图10是安装步骤图；
其中，上述附图包括以下附图标记：1、双钢管柱；11、内钢管；12、外钢管；13、连接耳Ⅰ；2、工字梁；3、节点连接件；31、连接内管；32、连接外套盘；33、条形连接件；34、连接耳Ⅱ；35、凹槽；4、内撑件；41、圆构件；42、连接杆；5、外环板；51、水平部；52、环状部；53、连接板Ⅰ；54、连接板Ⅱ。
具体实施方式
下面结合附图对本发明作进一步说明。
实施例1
如图1所示，本发明的内置FRP筋连接装置的双钢管混凝土梁柱节点,包括双钢管柱1、工字梁2、节点连接件3、内撑件4和外环板5。
如图2所示，双钢管柱1包括内钢管11和外钢管12，内钢管和外钢管均为圆钢管，外钢管的近节点端垂直固定设有连接耳Ⅰ13，即上层外钢管的底部和下层外钢管的顶部的外表面皆垂直固定设有连接耳Ⅰ13，连接耳Ⅰ13的数量与所要连接的工字梁2的数量一致，本实施例中以连接四个工字梁2为例，四个连接耳Ⅰ13沿圆周均布；上层外钢管的底部和下层外钢管的顶部上皆设置有用于连接的FRP筋通孔。
如图3所示，节点连接件3包括连接内管31和连接外套盘32，连接内管和连接外套盘均为圆钢管，二者通过条形连接件33连接，连接内管31的两端伸出连接外套盘32，伸出的部分其上设置有通孔，连接外套盘32的内径大于外钢管12的外径，连接外套盘32上垂直固定有连接耳Ⅱ34，连接耳Ⅱ34上下两侧 的连接外套盘上均开有凹槽35。
如图4所示，内撑件4为柱状结构，两端沿圆周均布有螺栓孔，为了减少用材及减轻重量，可以在内撑件的外围设置凹槽。
内撑件4的高度与连接内管31的高度相同，内撑件4两端的螺栓孔与连接内管31两端的通孔相对应。
如图6所示，外环板5包括相互垂直的水平部51和环状部52。
如图7-9所示，上下层双钢管柱1通过节点连接件3和内撑件4连接，内撑件4插入连接内管31中，上层内钢管11的下端和下层内钢管11的上端均插入内撑件4与连接内管31之间的孔隙，外钢管12插入连接外套盘32中，使连接耳Ⅰ13插入连接外套盘的凹槽35中，双钢管柱1和工字梁2通过对称的上下两组外环板5连接，外环板5的环状部52与外钢管12外表面相贴合，FRP筋依次穿过外环板的环状部52、外钢管12、连接内管31和内钢管11后固定在内撑件4的螺栓孔内，FRP筋两端均带有外螺纹,一端与内撑件4螺纹连接，另一端安装有螺母。工字梁2的腹板与连接耳Ⅰ13和连接耳Ⅱ34通过连接板Ⅰ53连接，连接板Ⅰ53分别与工字梁的腹板以及连接耳Ⅰ和连接耳Ⅱ通过螺栓连接，在连接腹板的同时，也加强了上下层外钢管的连接；工字梁2的翼板与外环板的水平部51通过连接板Ⅱ54连接，连接板Ⅱ54分别与工字梁的翼板和外环板的水平部通过螺栓连接。
FRP筋采用碳纤维增强复合材料。
如图10所示，本发明的安装方法包括如下步骤：
第一步：将节点连接件3安装于下层的双钢管柱1的上方，使内钢管11插入连接内管31中，外钢管12插入连接外套盘32中，外钢管的连接耳Ⅰ13插入连接外套盘的凹槽35中；
第二步：将内撑件4的底部安装于下层双钢管的内钢管11中，将FRP筋依次穿过外钢管12、连接内管31、内钢管11后旋入内撑件4下方的螺纹孔中；
第三步：将上层双钢管柱1安装于节点连接件3上方，使内撑件4的上端 插入上方内钢管11内，上方的内钢管11下端插入连接内管31的上端中，上方的外钢管12插入连接外套盘32的上端中，外钢管的连接耳Ⅰ13插入连接外套盘的凹槽35中，将FRP筋依次穿过外钢管12、连接内管31、内钢管11后旋入内撑件4上方的螺纹孔中；
第四步：将连接耳Ⅱ34和上下两个连接耳Ⅰ13通过连接板Ⅰ53连接到一起，至此上下层双钢管柱1的连接完成；
第五步：在双钢管柱1内浇筑混凝土，浇筑的混凝土为钢纤维混凝土，以减缓混凝土中裂缝的产生；
第六步：安装上下两组对称的外环板5，将外环板的环状部52与外钢管12通过已插入的FRP筋连接，在FRP筋端部安装上螺母；
第七步：安装工字梁2，将翼板与外环板的水平部51通过连接板Ⅱ54连接，腹板与连接板Ⅰ53连接。
实施例2
如图5所示，为了减少用材及减轻重量，可以将内撑件4中间挖空，保留两端设置有螺栓孔的部分，内撑件4包括两端的圆构件41和中间的连接杆42,两端的圆构件41通过连接杆42连接，圆构件41上沿圆周均布有螺栓孔。
其它同实施例1。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (9)

  1. 一种内置FRP筋连接装置的双钢管混凝土梁柱节点，其特征在于，
    包括双钢管柱(1)、工字梁(2)、节点连接件(3)、内撑件(4)和外环板(5)；
    双钢管柱(1)包括内钢管(11)和外钢管(12)，内钢管(11)置于外钢管(12)内，外钢管(12)的外侧近节点端垂直固定设有连接耳Ⅰ(13)；
    节点连接件(3)包括连接内管(31)和连接外套盘(32)，连接内管(31)和连接外套盘(32)均为圆钢管，连接内管(31)置于连接外套盘(32)内且二者通过条形连接件(33)连接，连接内管(31)的两端伸出连接外套盘(32)，伸出的部分其上设置有通孔，连接外套盘(32)的内径大于外钢管(12)的外径，连接外套盘(32)的外侧中间位置垂直固定设有连接耳Ⅱ(34)，连接耳Ⅱ(34)上下两侧的连接外套盘(32)上均开有凹槽(35)；
    内撑件(4)为柱状结构，两端沿圆周均布有螺栓孔；
    外环板(5)包括相互垂直的水平部(51)和环状部(52)；
    上下层双钢管柱(1)通过节点连接件(3)和内撑件(4)连接，内撑件(4)的两端分别插入上下内钢管(11)中，上下两内钢管(11)分别插入连接内管(31)中，上下两外钢管(12)分别插入连接外套盘(32)中，使连接耳Ⅰ(13)插入凹槽(35)中；
    双钢管柱(1)和工字梁(2)通过对称的上下两组外环板(5)连接，外环板(5)的环状部(52)与外钢管(12)相贴合，FRP筋依次穿过环状部(52)、外钢管(12)、连接内管(31)和内钢管(11)后固定在内撑件(4)的螺栓孔内，工字梁(2)的腹板与连接耳Ⅰ(13)和连接耳Ⅱ(34)固定连接，工字梁(2)的翼板与水平部(51)固定连接。
  2. 根据权利要求1所述的内置FRP筋连接装置的双钢管混凝土梁柱节点， 其特征在于，工字梁(2)的腹板与连接耳Ⅰ(13)、连接耳Ⅱ(34)通过连接板Ⅰ(53)连接。
  3. 根据权利要求1所述的内置FRP筋连接装置的双钢管混凝土梁柱节点，其特征在于，工字梁(2)的翼板与水平部(51)通过连接板Ⅱ(54)连接。
  4. 根据权利要求1所述的内置FRP筋连接装置的双钢管混凝土梁柱节点，其特征在于，FRP筋两端均带有外螺纹,一端与内撑件(4)螺纹连接，另一端安装有螺母。
  5. 根据权利要求1所述的内置FRP筋连接装置的双钢管混凝土梁柱节点，其特征在于，内撑件(4)的高度与连接内管(31)的高度相同，内撑件(4)两端的螺栓孔与连接内管(31)两端的通孔相对应。
  6. 根据权利要求5所述的内置FRP筋连接装置的双钢管混凝土梁柱节点，其特征在于，内撑件(4)包括两端的圆构件(41)和中间的连接杆(42),两端的圆构件(41)通过连接杆(42)连接，圆构件(41)沿圆周均布有螺栓孔。
  7. 根据权利要求1所述的内置FRP筋连接装置的双钢管混凝土梁柱节点，其特征在于，FRP筋采用碳纤维增强复合材料。
  8. 根据权利要求1所述的内置FRP筋连接装置的双钢管混凝土梁柱节点，其特征在于，双钢管柱(1)安装完毕后其内部浇筑的混凝土为钢纤维混凝土。
  9. 一种上述任一权利要求所述的内置FRP筋连接装置的双钢管混凝土梁柱节点的安装方法，其特征在于，包括如下步骤：
    第一步：将节点连接件(3)安装于下层的双钢管柱(1)的上方，使内钢管(11)插入连接内管(31)中，外钢管(12)插入连接外套盘(32)中，外钢管的连接耳Ⅰ(13)插入连接外套盘的凹槽(35)中；
    第二步：将内撑件(4)的底部安装于下层双钢管的内钢管(11)中，将FRP 筋依次穿过外钢管(12)、连接内管(31)、内钢管(11)后旋入内撑件(4)下方的螺纹孔中；
    第三步：将上层双钢管柱(1)安装于节点连接件(3)上方，使内撑件(4)的上端插入上方内钢管(11)内，上方的内钢管(11)下端插入连接内管(31)的上端中，上方的外钢管(12)插入连接外套盘(32)的上端中，外钢管的连接耳Ⅰ(13)插入连接外套盘上端的凹槽(35)中，将FRP筋依次穿过上方的外钢管(12)、连接内管(31)、内钢管(11)后旋入内撑件(4)上方的螺纹孔中；
    第四步：将连接耳Ⅱ(34)和上下两个连接耳Ⅰ(13)通过连接板Ⅰ(53)连接到一起，至此上下层双钢管柱(1)的连接完成；
    第五步：在双钢管柱(1)内浇筑混凝土；
    第六步：安装上下两组对称的外环板(5)，将外环板的环状部(52)与外钢管(12)通过已插入的FRP筋连接，在FRP筋端部安装上螺母；
    第七步：安装工字梁(2)，将翼板与外环板的水平部(51)通过连接板Ⅱ(54)连接，腹板与连接板Ⅰ(53)连接。
PCT/CN2020/107249 2020-07-13 2020-08-06 内置frp筋连接装置的双钢管混凝土梁柱节点及安装方法 WO2022011759A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010668304.0A CN111733986B (zh) 2020-07-13 2020-07-13 内置frp筋连接装置的双钢管混凝土梁柱节点及安装方法
CN202010668304.0 2020-07-13

Publications (1)

Publication Number Publication Date
WO2022011759A1 true WO2022011759A1 (zh) 2022-01-20

Family

ID=72655335

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/107249 WO2022011759A1 (zh) 2020-07-13 2020-08-06 内置frp筋连接装置的双钢管混凝土梁柱节点及安装方法

Country Status (4)

Country Link
US (1) US11155989B1 (zh)
JP (1) JP6917666B1 (zh)
CN (1) CN111733986B (zh)
WO (1) WO2022011759A1 (zh)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113047454B (zh) * 2021-04-07 2022-06-21 青岛理工大学 Frp钢混凝土柱与钢梁组合节点及安装方法
CN113047428B (zh) * 2021-04-07 2022-06-21 青岛理工大学 螺纹拼接式钢木组合节点及安装方法
CN113445670A (zh) * 2021-08-13 2021-09-28 西安建筑科技大学 一种预制装配复合钢管混凝土格构柱及施工方法
CN113665196A (zh) * 2021-08-25 2021-11-19 华南理工大学 一种外包复材缠绕管双钢管混凝土构件及其制备方法
JP7498160B2 (ja) 2021-09-07 2024-06-11 Ｊｆｅシビル株式会社 鋼管コンクリート柱、鋼管コンクリート柱と鉄骨梁の接合構造及びその構築方法
CN113914548B (zh) * 2021-10-27 2022-11-25 镇江港务集团有限公司 一种用于替代钢筋的道路用轻质高强型玄武岩复合筋结构
CN114197486B (zh) * 2021-12-23 2023-04-07 江苏雷威建设工程有限公司 一种深基坑装配式型钢支撑结构
CN114313126B (zh) * 2022-01-13 2024-04-19 东北石油大学 装配式frp混凝土组合牵索塔式平台体系及其施工方法
CN114313127B (zh) * 2022-01-13 2024-03-26 东北石油大学 装配式frp混凝土组合牵索塔式减震平台群及其施工方法
CN114277937B (zh) * 2022-02-08 2023-06-09 华北理工大学 中空夹层钢管混凝土构件连接结构、组合结构及施工方法
CN114962411A (zh) * 2022-06-09 2022-08-30 浙江东南网架股份有限公司 球面网壳结构环槽铆钉安装方法
CN114960973A (zh) * 2022-06-27 2022-08-30 重庆大学 一种钢管混凝土异形柱与u形钢-混凝土组合梁节点
CN115075380B (zh) * 2022-07-19 2023-06-20 华东交通大学 一种中空夹层钢管陶瓷节点结构及其节点处理方法
CN115075390B (zh) * 2022-07-25 2023-10-27 重庆大学 钢梁端板互连式节点连接结构及其装配方法
CN115075389B (zh) * 2022-07-25 2023-11-03 重庆大学 梁翼缘环形套板节点连接结构及其装配方法
CN115787852B (zh) * 2022-11-22 2023-09-05 中国建筑设计研究院有限公司 一种十字形支撑柱的刚接节点连接结构及其系统
CN116044200B (zh) * 2023-01-10 2024-05-17 武汉大学 一种外套钢管混凝土加固混凝土柱柱顶节点结构及方法
CN116856563B (zh) * 2023-09-05 2023-11-21 北京建筑大学 一种可拆卸循环使用的双管式柱对接节点结构及其建筑物
CN117627278B (zh) * 2024-01-24 2024-04-26 中国船舶集团国际工程有限公司 带有抗混凝土收缩环装置的钢管混凝土柱、安装方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09209450A (ja) * 1996-02-07 1997-08-12 Daiwa House Ind Co Ltd 柱・梁接合構造およびこれを用いた鉄骨架構
JP2012077476A (ja) * 2010-09-30 2012-04-19 Takenaka Komuten Co Ltd 鋼管柱の仕口部補強構造
CN105926780A (zh) * 2016-07-01 2016-09-07 山东科技大学 双圆钢管混凝土柱的梁柱节点及施工方法
CN106869314A (zh) * 2016-12-30 2017-06-20 北方工业大学 复式钢管混凝土柱‑钢梁装配式框架节点
CN107916726A (zh) * 2017-12-21 2018-04-17 青岛理工大学 装配式自恢复圆形钢管混凝土组合节点
CN109736438A (zh) * 2019-01-28 2019-05-10 皖西学院 一种钢管混凝土用钢管连接装置及其施工方法
CN209384395U (zh) * 2018-12-14 2019-09-13 武汉悉道建筑科技有限公司 一种rcs混合框架梁柱连接节点

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1008461B (zh) * 1985-03-05 1990-06-20 清水建设株式会社 钢管混凝土柱子及其制造方法
JP3854194B2 (ja) * 2002-05-27 2006-12-06 新日本製鐵株式会社 コンクリート充填鋼管柱とｈ形断面梁の高力ボルト接合構造および高力アンカーボルト
JP3749250B1 (ja) * 2005-05-24 2006-02-22 平垣 實 鉄骨軸組の仕口構造及び角型鋼柱に角型鋼梁を接合するための継ぎ手部材
CN102261164B (zh) * 2010-05-24 2014-04-16 香港理工大学 Frp-混凝土-钢双壁组合管梁及采用该梁的梁板式组合结构
KR101373914B1 (ko) * 2012-05-29 2014-03-12 아주대학교산학협력단 중공 구조체 및 그 제조방법
CN202831235U (zh) * 2012-08-31 2013-03-27 宝钢建筑系统集成有限公司 一种内置套管的矩形钢管柱与h型钢梁装配式节点
WO2015061906A1 (en) * 2013-10-30 2015-05-07 Socpra Sciences Et Genie S.E.C. Composite structural member, method for manufacturing same, and connecting assemblies for composite structural members
WO2016056696A1 (ko) * 2014-10-10 2016-04-14 (주)피에스테크 다이아프램이 없는 강관을 이용한 골조 연결구조 및 연결방법
JP2017036653A (ja) * 2015-08-07 2017-02-16 日鐵住金建材株式会社 柱と梁との接合構造及び方法、柱と梁の接合構造の設計方法、柱と梁の接合構造の設計プログラム
US20170241140A1 (en) * 2016-02-18 2017-08-24 The Hong Kong Polytechnic University Reinforcing members for concrete structures
CN105888080B (zh) * 2016-04-11 2018-01-19 青岛理工大学 装配式钢管套管钢筋混凝土组合节点及安装方法
CN106012809B (zh) * 2016-04-29 2018-03-20 东南大学 一种钢‑纤维复合材料混凝土组合柱及其震后修复方法
CN105804246B (zh) * 2016-05-17 2017-11-17 福州大学 无焊接的装配式钢管混凝土梁柱节点及其施工方法
CN206205158U (zh) * 2016-08-23 2017-05-31 华南理工大学 薄壁钢管再生混合柱与钢梁的双层窄环板‑frp节点
CN106836489B (zh) * 2017-02-23 2018-11-02 青岛理工大学 一种装配式圆形钢管套管纤维混凝土柱连接节点及安装方法
CN108505619A (zh) * 2017-02-24 2018-09-07 新世界中国地产有限公司 预制装配式结构体系及其组装方法
CN207582727U (zh) * 2017-10-18 2018-07-06 天津大学 双钢板-混凝土剪力墙边柱内衬管式连接节点结构
US10344480B2 (en) * 2017-12-04 2019-07-09 The Florida International University Board Of Trustees Composite construct and methods and devices for manufacturing the same
CN107893481B (zh) * 2017-12-21 2019-03-15 青岛理工大学 具有恢复功能的全装配钢框架结构体系
CN207919763U (zh) * 2017-12-21 2018-09-28 青岛理工大学 装配式自恢复圆形钢管混凝土组合节点
CN108560753B (zh) * 2018-04-20 2019-11-01 青岛理工大学 带有颗粒阻尼仓耗能的装配式智能节点及安装方法
CN110295670A (zh) * 2019-07-24 2019-10-01 青岛理工大学 方形frp钢木组合节点及其安装方法
US10954663B2 (en) * 2019-07-24 2021-03-23 Qingdao university of technology Cylindrical sleeve-type steel-wood composite joint and the assembly method
CN110644619B (zh) * 2019-09-21 2020-10-09 青岛理工大学 装配式限位增强钢木磨砂套筒组合节点

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09209450A (ja) * 1996-02-07 1997-08-12 Daiwa House Ind Co Ltd 柱・梁接合構造およびこれを用いた鉄骨架構
JP2012077476A (ja) * 2010-09-30 2012-04-19 Takenaka Komuten Co Ltd 鋼管柱の仕口部補強構造
CN105926780A (zh) * 2016-07-01 2016-09-07 山东科技大学 双圆钢管混凝土柱的梁柱节点及施工方法
CN106869314A (zh) * 2016-12-30 2017-06-20 北方工业大学 复式钢管混凝土柱‑钢梁装配式框架节点
CN107916726A (zh) * 2017-12-21 2018-04-17 青岛理工大学 装配式自恢复圆形钢管混凝土组合节点
CN209384395U (zh) * 2018-12-14 2019-09-13 武汉悉道建筑科技有限公司 一种rcs混合框架梁柱连接节点
CN109736438A (zh) * 2019-01-28 2019-05-10 皖西学院 一种钢管混凝土用钢管连接装置及其施工方法

Also Published As

Publication number Publication date
CN111733986A (zh) 2020-10-02
US11155989B1 (en) 2021-10-26
JP6917666B1 (ja) 2021-08-11
CN111733986B (zh) 2021-04-20
JP2022017177A (ja) 2022-01-25

Similar Documents

Publication Publication Date Title
WO2022011759A1 (zh) 内置frp筋连接装置的双钢管混凝土梁柱节点及安装方法
WO2019119686A1 (zh) 装配式自恢复圆形钢管混凝土组合节点
US10280642B2 (en) Connecting gusset plate with sliding end plate for buckling-restrained brace
JP7132559B2 (ja) アルミニウム管－コンファインドコンクリート－鋼管を組み合わせた組立式ジャケットによる海洋プラットフォーム及び製造方法
WO2022062285A1 (zh) 竹节式耗能钢管混凝土节点及安装方法
WO2017177470A1 (zh) 装配式钢管套管钢筋混凝土组合节点及安装方法
CN104847015A (zh) 一种单层三角形空间网格结构装配式节点
CN110056085B (zh) 可快速装配的frp型材梁柱节点
WO2022062284A1 (zh) 竹节式耗能钢管混凝土柱脚节点及安装方法
WO2021159567A1 (zh) 可恢复式钢木独立基础及安装方法
CN105507426A (zh) 半穿心牛腿加腋型复式钢管混凝土柱-钢梁节点
CN109025066A (zh) 一种装配式中空夹层钢管混凝土构件及其制备方法
CN105672477A (zh) 一种高强螺栓空心毂节点
CN113445670A (zh) 一种预制装配复合钢管混凝土格构柱及施工方法
CN110700422B (zh) 一种箱型钢管焊接组成的dk型空间汇交节点及应用
CN103306431B (zh) 钢筋混凝土管格构柱
CN112900646A (zh) 一种装配式组合结构节点连接系统
CN114775783B (zh) 一种装配式型钢混凝土柱—pvc-frp管钢筋混凝土梁连接节点
CN105019353B (zh) 一种根部设置防屈曲耗能结构的方法及圆钢管桥墩
CN112962823B (zh) 一种内设可更换斜撑的双钢板剪力墙及其施工方法
CN210164054U (zh) 钢砼组合管上下层快速对接及临时固定装置
CN105297895A (zh) 复式钢管混凝土柱-钢梁半穿心加腋型节点
CN102268874B (zh) 双管约束型砼钢支撑
CN105297896A (zh) 穿心牛腿加腋型复式钢管混凝土柱-钢梁节点
CN220685758U (zh) 一种钢管贝雷支架限位装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20945029

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20945029

Country of ref document: EP

Kind code of ref document: A1