WO2022213492A1 - Frp钢混凝土柱与钢梁组合节点及安装方法 - Google Patents

Frp钢混凝土柱与钢梁组合节点及安装方法 Download PDF

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Publication number
WO2022213492A1
WO2022213492A1 PCT/CN2021/103907 CN2021103907W WO2022213492A1 WO 2022213492 A1 WO2022213492 A1 WO 2022213492A1 CN 2021103907 W CN2021103907 W CN 2021103907W WO 2022213492 A1 WO2022213492 A1 WO 2022213492A1
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shaped steel
frp
double
concrete column
ring plate
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PCT/CN2021/103907
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English (en)
French (fr)
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牟犇
王子安
余涛
周万求
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青岛理工大学
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Publication of WO2022213492A1 publication Critical patent/WO2022213492A1/zh

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    • 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
    • E04B1/19—Three-dimensional framework structures
    • E04B1/1903—Connecting nodes specially adapted therefor
    • E04B1/1912—Connecting nodes specially adapted therefor with central cubical connecting element
    • 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
    • E04B1/19—Three-dimensional framework structures
    • E04B1/1903—Connecting nodes specially adapted therefor
    • 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
    • E04B1/19—Three-dimensional framework structures
    • E04B2001/1957—Details of connections between nodes and struts
    • E04B2001/1963—Screw connections with axis at an angle, e.g. perpendicular, to the main axis of the strut

Definitions

  • the invention relates to the technical field of building structural components, in particular to a composite node of an FRP steel concrete column and a steel beam and an installation method.
  • CFST structure can effectively exert the respective advantages of steel and concrete, and at the same time overcome the shortcoming that the steel tube structure is prone to local buckling.
  • the CFST structure is prone to corrosion, which will reduce the cross-section of the components and reduce the bearing capacity, especially the "rust pit" caused by corrosion increases the possibility of brittle failure of the steel structure, which also seriously affects the durability of the steel structure.
  • FRP fiber-reinforced polymers
  • the purpose of the present invention is to overcome the above-mentioned defects existing in the prior art, and propose a combined node of an FRP steel concrete column and a steel beam and an installation method.
  • a composite node of an FRP concrete column and a steel beam of the present invention includes an FRP double I-shaped steel concrete column, a beam-column connector and an H-shaped steel beam, and the FRP double I-shaped steel concrete column includes an upper FRP double I-shaped steel concrete column and the lower FRP double I-shaped steel-concrete column, the upper FRP double-I-shaped steel-concrete column and the lower FRP double-I-shaped steel-concrete column are connected by connecting cylinders;
  • the FRP double I-shaped steel-concrete column includes an outer casing and a double I-shaped steel skeleton located on the inner side of the outer casing.
  • the double I-shaped steel skeleton includes cross ribs, reinforcing steel fixing plates and plug plates located on four sides respectively, and the width of the plug plates is smaller than that of the FRP double I.
  • the width of the inner wall of the sectioned steel concrete column, the four rib plates of the cross rib are provided with long hole grooves along the vertical direction, the distances from each long hole groove to the center of the cross rib are equal, and the center of the steel fixing plate is provided with a round hole, surrounded by There is a rebar socket I, and the rebar fixing plate is installed on the side of the cross rib with the long hole groove;
  • the beam-column connector includes an upper ring plate, a lower ring plate, a core cylinder and a side plate, the inner wall diameter of the core cylinder is larger than the outer wall diameter of the connecting cylinder, and the upper and lower ends of the core cylinder are respectively installed with an upper ring plate and a side plate.
  • the lower ring plate, the center of the upper ring plate and the lower ring plate are provided with a circular hole, and there are reinforcement holes II around them.
  • the cylinder is connected vertically;
  • the reinforcing bars of the upper FRP double I-shaped steel concrete column pass through the steel rebar socket II of the upper ring plate to connect with the beam-column connector, and the reinforcing bar of the lower FRP double I-shaped steel concrete column passes through the steel reinforcement hole II of the lower ring plate and is connected to the beam-column connector Connection, the connecting cylinder passes through the core cylinder of the beam-column connector, and is respectively inserted with the cross rib of the double I-shaped steel skeleton of the upper FRP double I-shaped steel concrete column and the lower FRP double I-shaped steel concrete column, and the H-shaped steel beam.
  • the flange is overlapped with the ring plate of the beam-column connector, and the web of the H-shaped steel beam is overlapped with the side plate.
  • the flange of the H-shaped steel beam is overlapped with the ring plate of the beam-column connector through the connecting plate I and the connecting plate II, and the web plate and the side plate of the H-shaped steel beam are overlapped through the connecting plate III.
  • the reinforcing bars of the upper FRP double I-shaped steel concrete column and the upper ring plate are connected by nuts, and the steel bars of the lower FRP-double I-shaped steel concrete column and the lower ring plate are connected by nuts.
  • the outer tube of the upper FRP double I-shaped steel concrete column and the lower FRP double I-shaped steel concrete column are inserted into the double I-shaped steel frame, which has a restraining effect on the FRP outer tube and prevents it from buckling, which can improve the flexural performance of the FRP double I-shaped steel concrete column.
  • the outer tube of FRP double I-shaped steel concrete column adopts FRP material, which can effectively improve corrosion resistance and durability.
  • the upper flange of the H-shaped steel beam and the upper ring plate, the lower flange and the lower ring plate of the H-shaped steel beam, and the web plate and the side plate of the H-shaped steel beam are respectively connected by high-strength bolts.
  • the reinforcing bar of FRP double I-shaped steel concrete column is FRP bar, which has the advantages of light weight, high tensile strength, strong corrosion resistance, and strong material bonding ability.
  • the connecting cylinders are respectively inserted into the long hole grooves of the cross rib of the double I-shaped steel frame of the upper FRP double I-shaped steel concrete column and the lower FRP double I-shaped steel concrete column to improve the integrity of the FRP double I-shaped steel concrete column.
  • the present invention includes an installation method of the above-mentioned concrete column and steel beam composite node, comprising the following steps;
  • the first step insert the double I-shaped steel skeleton into the inner wall of the outer tube of the upper FRP double I-shaped steel concrete column and the lower FRP double I-shaped steel concrete column respectively, and the long hole groove of the double I-shaped steel skeleton of the upper FRP double I-shaped steel concrete column faces toward the inner wall.
  • the long hole groove of the double I-shaped steel skeleton of the lower FRP double-I-shaped steel-concrete column faces upwards;
  • Step 2 Align the reinforcement socket II of the lower ring plate of the beam-column connector with the reinforcement socket I of the reinforcement fixing plate of the lower FRP double I-shaped steel concrete column, and the reinforcement will penetrate through the reinforcement socket II of the lower ring board. Insert the lower ring plate and the reinforcing bar fixing plate in turn, and the upper end of the reinforcing bar is fixedly connected by tightening the nut;
  • the third step pass the connecting cylinder through the core cylinder of the beam-column connector, and insert it into the long hole groove of the double I-shaped steel skeleton of the lower FRP double-I-shaped steel concrete column;
  • Step 4 Insert the upper part of the connecting cylinder into the long hole groove of the double I-shaped steel skeleton of the upper FRP double-I-shaped steel concrete column, the steel bar is inserted from the steel bar hole II of the upper ring plate, and then inserted into the upper ring plate and the steel bar is fixed in turn The lower end of the steel bar is fixedly connected by tightening the nut;
  • Step 5 The upper and lower flanges of the H-shaped steel beam are respectively overlapped with the upper ring plate and the lower ring plate through the connecting plate I and the connecting plate II, and the web plate and the side plate of the H-shaped steel beam are overlapped through the connecting plate III. catch;
  • the sixth step pour concrete into the interior of the FRP double-I-shaped steel-concrete column through the opening of the upper FRP double-I-shaped steel-concrete column, so that the connection part forms a whole through the occlusal effect of the concrete.
  • a composite node of FRP steel concrete column and steel beam is designed based on the vertical splicing force transmission device.
  • the steel of the entire node can be processed and manufactured in the factory, and transported to the site for assembly and assembly through bolt connection, avoiding welding. Quality problems such as hot and cold cracks and mechanical defects such as stress concentration;
  • the outer tube of the FRP steel concrete column in the present invention adopts FRP material, which has good corrosion resistance, can well prevent the oxidation corrosion of the steel skeleton inside the steel tube, and improves the durability of the structure;
  • the double I-shaped steel skeleton built in the FRP steel concrete column in the present invention has a constraining effect on the concrete in the steel tube, so that it is compressed in multiple directions, and the bearing capacity of the structure is improved; Improve the flexural performance of the structure; in addition, the built-in double I-shaped steel frame can act as the longitudinal reinforcement of the FRP column to improve the ductility of the structure;
  • the upper FRP double I-shaped steel-concrete column and the lower FRP double-I-shaped steel-concrete column in the present invention are assembled into one through the slotted groove connecting the steel pipe and the steel skeleton, which avoids the problem that the upper and lower columns of the node are independent, and realizes the assembled structure. At the same time, it also improves the integrity of the structure, which can improve the bearing capacity of the columns, and achieve the purpose of strong columns and weak beams.
  • Fig. 1 is the structural representation of the combination node of the present invention
  • Fig. 2 is the structural decomposition schematic diagram of the combined node of the present invention.
  • Fig. 3 is the structural decomposition schematic diagram of the lower FRP double I-shaped steel concrete column
  • Fig. 4 is the structural decomposition schematic diagram of double I-shaped steel skeleton
  • Fig. 5 is the structural representation of beam-column connector
  • Figure 6(a) is a schematic diagram of setting up an outsourcing pipe
  • Figure 6(b) is a schematic diagram of the connection between the double I-shaped steel frame and the outer tube;
  • Fig. 6 (c) is the schematic diagram of the second step in the installation method
  • Fig. 6 (d) is the schematic diagram of the third step in the installation method
  • Fig. 6 (e) is the schematic diagram of the fourth step in the installation method
  • Figure 6(f) is a schematic diagram of the fifth step in the installation method.
  • the FRP steel concrete column and steel beam combined node of the present invention includes FRP double I-shaped steel concrete column 1, beam-column connector 2 and H-shaped steel beam 3, FRP double I-shaped steel concrete column 1. It consists of an upper FRP double I-shaped steel concrete column 4 and a lower FRP double I-shaped steel concrete column 5.
  • the upper FRP double I-shaped steel concrete column 4 and the lower FRP double I-shaped steel concrete column 5 are connected by a connecting cylinder 6.
  • the upper FRP double I-shaped steel-concrete column 4 and the lower FRP double-I-shaped steel-concrete column 5 both include an outer tube and a double I-shaped steel frame 7 .
  • Figures 3 and 4 are schematic structural diagrams of the lower FRP double I-shaped steel concrete column 5.
  • the lower FRP double I-shaped steel concrete column 5 is used as an example to introduce the structure of the FRP double I-shaped steel concrete column.
  • the inner wall of the outer tube is provided with a double I-shaped steel frame 7, the double I-shaped steel frame 7 includes a cross rib 8, a plug board 9 and a reinforcing bar fixing plate 10 on four sides, and the width of the four plug boards 9 is smaller than the FRP double I-shaped steel concrete column outsourcing The width of the inner wall of the tube.
  • the cross rib 8 is formed by connecting four rib plates arranged in a vertical direction. The adjacent rib plates are vertically connected, and the four rib plates are connected together to form a cross rib.
  • the four rib plates are respectively provided with opening grooves 11 along the vertical direction, and the distances from the four opening grooves to the center of the cross rib are equal.
  • the four sides of the outer tube of the concrete column are inserted in such a way that the inner walls of the four sides are fitted.
  • the reinforcing steel fixing plate 10 is installed on the side of the cross rib with the long hole groove.
  • the middle of the reinforcing steel fixing plate 10 is provided with a round hole, which can be used as a channel for pouring concrete into the lower FRP double I-shaped steel concrete column.
  • the beam-column connector includes an upper ring plate 13 , a lower ring plate 14 , a core cylinder 15 and a side plate 16 , the inner wall diameter of the core cylinder 15 is larger than the outer wall diameter of the connecting cylinder 6 , and the core cylinder 15
  • the upper and lower ends of the upper ring plate 13 and the lower ring plate 14 are respectively installed, and the round holes of the upper ring plate 13 and the lower ring plate 14 are provided with reinforcement holes II, and the side plates 16 are respectively connected with the upper ring plate 13 and the lower ring plate 14.
  • the ring plate 14 and the core cylinder 15 are connected vertically.
  • the connecting cylinder 6 passes through the core cylinder 15 of the beam-column connector, and is inserted into the long hole grooves of the cross ribs in the double I-shaped steel frame 7 of the upper FRP double I-shaped steel concrete column 4 and the lower FRP double I-shaped steel concrete column 5 respectively 11.
  • the reinforcing bar 12 of the upper FRP double I-shaped steel concrete column 4 passes through the steel bar hole II of the upper ring plate 13, and is connected with the beam-column connector 3 through a nut, and the steel bar 12 of the lower FRP double I-shaped steel concrete column 5 is connected. Pass through the rebar socket II of the lower ring plate 14, and connect with the beam-column connecting piece 3 through a nut.
  • the flange of the H-shaped steel beam 3 and the upper and lower ring plates of the beam-column connector 2 are overlapped by the connecting plate I17 and the connecting plate II18, and the web plate of the H-shaped steel beam 3 and the side plate 16 are overlapped by the connecting plate III19. .
  • the beam-column connector 2 of FIG. 1 , the outer casing of the upper FRP double I-shaped steel concrete column 4 and the lower FRP double I-shaped steel concrete column 5 , the H-shaped steel beam 3 and the double I-shaped steel frame 7 of FIG. 2 are all prefabricated in the factory in advance Complete, just install it on site.
  • the installation method of the above-mentioned FRP steel-concrete column and steel beam composite joint includes the following installation steps, as shown in Figures 6(a) to 6(f).
  • the double I-shaped steel skeleton 7 is inserted into the inner wall of the outer tube of the upper FRP double I-shaped steel concrete column 4 and the lower FRP double I-shaped steel concrete column 5 respectively, the double I-shaped steel skeleton 7 of the upper FRP double I-shaped steel concrete column 4
  • the long hole grooves face downward, and the long hole grooves of the double I-shaped steel frame 7 of the lower FRP double I-shaped steel-concrete column 5 face upwards.
  • the second step is to align the reinforcement socket II of the lower ring plate 14 of the beam-column connector 2 with the reinforcement socket I of the reinforcement fixing plate 10 of the lower FRP double I-shaped steel concrete column 5, and the reinforcement 12 is inserted from the beam-column connector 2.
  • the reinforcing bar hole II of the lower ring plate 14 is inserted into the lower ring plate 14 and the reinforcing bar fixing plate 10 in sequence, and the upper end of the reinforcing bar 12 is fixedly connected by tightening the nut.
  • the connecting cylinder 6 is passed through the core cylinder 15 of the beam-column connector, and the connecting cylinder 6 is inserted into the long hole groove 11 of the double I-shaped steel frame 7 of the lower FRP double I-shaped steel concrete column 5 .
  • the 4th step insert the upper part of the connecting cylinder 6 into the long hole groove 11 of the double I-shaped steel skeleton 7 of the upper FRP double I-shaped steel concrete column 4, and by connecting the cylinder 6, the upper FRP double I-shaped steel concrete column 4 is realized.
  • the connection with the lower FRP double I-shaped steel concrete column 5 improves the integrity of the FRP double I-shaped steel concrete column.
  • Reinforcing bars 12 are inserted through the rebar sockets II of the upper ring plate 13 of the beam-column connector 2, and are inserted into the upper ring plate 13 and the reinforcing bar fixing plate 10 in sequence.
  • the upper and lower flanges of the H-shaped steel beam 3 are respectively overlapped with the upper ring plate 13 and the lower ring plate 14 through the connecting plate I17 and the connecting plate II18, and the web plate and the side plate 16 of the H-shaped steel beam 3 pass through the connecting plate. III19 lap joint.
  • the sixth step is to pour concrete into the interior of the FRP double I-shaped steel concrete column 1 through the opening of the upper FRP double I-shaped steel concrete column 4, so that the connecting part forms a whole through the occlusal effect of the concrete.
  • the upper FRP double I-shaped steel In order to prevent the overflow of concrete, the upper FRP double I-shaped steel The gap between the concrete column 4, the beam-column connector 2 and the lower FRP double I-shaped steel concrete column 5 is filled with rubber material.

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Abstract

一种FRP钢混凝土柱与钢梁组合节点及安装方法，包括FRP双I型钢混凝土柱（1）、梁柱连接件（2）和H型钢梁（3），FRP双I型钢混凝土柱（1）包括上部FRP双I型钢混凝土柱（4）和下部FRP双I型钢混凝土柱（5），上部FRP双I型钢混凝土柱（4）与下部FRP双I型钢混凝土柱（5）通过连接圆筒（6）连接。其耐腐蚀性好，运送至现场通过螺栓连接进行装配组装，提高了结构的整体性和柱体的承载力。

Description

FRP钢混凝土柱与钢梁组合节点及安装方法 技术领域
本发明涉及建筑结构构件技术领域，特别是一种FRP钢混凝土柱与钢梁组合节点及安装方法。
背景技术
随着社会经济的发展，建筑业正朝着优化产业结构、推广装配式建筑、绿色建筑等方向发展，其转型已成为社会经济发展的必然趋势。
传统的钢筋混凝土建筑，虽然抗压能力强，但是抗弯能力不足。采用钢管混凝土结构能够有效地发挥钢材和混凝土两种材料各自的优点，同时克服了钢管结构容易发生局部屈曲的缺点。但是对于沿海地区，钢管混凝土结构容易出现锈蚀问题，会使构件截面减小，承载力下降，尤其是因腐蚀产生的“锈坑”使得钢结构的脆性破坏的可能性增大，也严重的影响了钢结构的耐久性。
在过去的20年中，纤维增强聚合物(FRP)作为钢筋混凝土柱加固和抗震的外包材料越来越受欢迎。近几年，FRP管以其热膨胀系数与混凝土相近等优点被广泛的应用于更多新型钢混结构。传统的FRP混凝土柱内部为素混凝土或钢筋混凝土，研究发现这两种类型钢管混凝土柱在强震作用下，FRP外管会在内置混凝土破坏后发生屈曲等问题。
发明内容
本发明的目的在于克服现有技术存在的上述缺陷，提出了一种FRP钢混凝土柱与钢梁组合节点及安装方法。
为了实现上述目的，本发明的一种FRP混凝土柱与钢梁组合节点包括FRP双I型钢混凝土柱、梁柱连接件和H型钢梁，FRP双I型钢混凝土柱包括上部 FRP双I型钢混凝土柱和下部FRP双I型钢混凝土柱，上部FRP双I型钢混凝土柱与下部FRP双I型钢混凝土柱通过连接圆筒连接；
所述FRP双I型钢混凝土柱包括外包管和位于外包管内侧的双I型钢骨架，双I型钢骨架包括十字肋、钢筋固定板和分别位于四侧的插板，插板的宽度小于FRP双I型钢混凝土柱的内壁宽度，十字肋的四个肋板沿竖直方向设有长孔凹槽，各长孔凹槽到十字肋中心的距离相等，钢筋固定板的中心设有圆孔，四周设有钢筋插孔Ⅰ，钢筋固定板安装在十字肋有长孔凹槽的一侧；
所述梁柱连接件包括上环板、下环板、核心圆筒以及侧板，核心圆筒的内壁直径大于连接圆筒的外壁直径，核心圆筒的上下端部分别安装有上环板和下环板，上环板和下环板的中心设有圆孔，四周设有钢筋插孔Ⅱ，侧板位于上环板和下环板之间，且与上环板、下环板以及核心圆筒垂直连接；
上部FRP双I型钢混凝土柱的钢筋穿过上环板的钢筋插孔Ⅱ与梁柱连接件连接，下部FRP双I型钢混凝土柱的钢筋穿过下环板的钢筋插孔Ⅱ与梁柱连接件连接，连接圆筒穿过梁柱连接件的核心圆筒、并分别与上部FRP双I型钢混凝土柱和下部FRP双I型钢混凝土柱的双I型钢骨架的十字肋插接，H型钢梁的翼缘与梁柱连接件的环板搭接，H型钢梁的腹板与侧板搭接。
进一步的，H型钢梁的翼缘通过连接板Ⅰ和连接板Ⅱ与梁柱连接件的环板搭接，H型钢梁的腹板与侧板通过连接板Ⅲ搭接。
上部FRP双I型钢混凝土柱的钢筋与上环板之间通过螺帽连接，下部FRP-双I型钢混凝土柱的钢筋与下环板之间通过螺帽连接。
上部FRP双I型钢混凝土柱和下部FRP双I型钢混凝土柱的外包管内均插入双I型钢骨架，对FRP外管具有约束作用，防止其屈曲，可提高FRP双I型钢混凝土柱的抗弯性能。
FRP双I型钢混凝土柱的外包管采用FRP材料，可有效地提高耐腐蚀性和耐久性。
H型钢梁的上翼缘与上环板、H型钢梁的下翼缘和下环板、H型钢梁的腹板和侧板之间分别通过高强螺栓连接。
FRP双I型钢混凝土柱的钢筋为FRP筋，具有质量轻、抗拉强度高、耐腐蚀性强、材料结合能力强等优点。
连接圆筒分别与上部FRP双I型钢混凝土柱和下部FRP双I型钢混凝土柱的双I型钢骨架的十字肋的长孔凹槽插接，提升FRP双I型钢混凝土柱的整体性。
本发明包括一种上述混凝土柱与钢梁组合节点的安装方法，包括以下步骤；
第一步：将双I型钢骨架分别插入上部FRP双I型钢混凝土柱和下部FRP双I型钢混凝土柱的外包管的内壁，上部FRP双I型钢混凝土柱的双I型钢骨架的长孔凹槽朝下，下部FRP双I型钢混凝土柱的双I型钢骨架的长孔凹槽朝上；
第二步：将梁柱连接件的下环板的钢筋插孔Ⅱ与下部FRP双I型钢混凝土柱的钢筋固定板的钢筋插孔Ⅰ对齐，钢筋从下环板的钢筋插孔Ⅱ穿入，依次插入下环板与钢筋固定板，钢筋的上端由螺帽拧紧后固定连接；
第三步：将连接圆筒穿过梁柱连接件的核心圆筒，插入下部FRP双I型钢混凝土柱的双I型钢骨架的长孔凹槽；
第四步：将连接圆筒的上部插入上部FRP双I型钢混凝土柱的双I型钢骨架的长孔凹槽，钢筋从上环板的钢筋插孔Ⅱ穿入，依次插入上环板与钢筋固定板，钢筋的下端由螺帽拧紧后固定连接；
第五步：H型钢梁的上、下翼缘均通过连接板Ⅰ和连接板Ⅱ分别与上环板与下环板搭接，H型钢梁的腹板与侧板通过连接板Ⅲ搭接；
第六步：通过上部FRP双I型钢混凝土柱的开口向FRP双I型钢混凝土柱的内部灌注混凝土，使连接部位通过混凝土的咬合作用形成整体。
本发明的有益效果是：
本发明的一种基于竖向拼接传力装置设计的FRP钢混凝土柱与钢梁组合节点，整个节点部分的钢材都可以在工厂进行加工制作，运送至现场通过螺栓连接进行装配组装，避免了焊接带来的冷热裂纹等质量问题和应力集中等力学缺陷；
本发明中的FRP钢混凝土柱的外包管采用FRP材料，其耐腐蚀性好，可以很好地防止钢管内部型钢骨架的氧化腐蚀，提高结构的耐久性；
本发明中FRP钢混凝土柱内置的双I型钢骨架，对钢管内混凝土有约束作用，使其多向受压，提高结构的承载力；并且对FRP外管屈曲有支撑作用，防止其屈曲，可提高结构的抗弯性能；另外，内置双I型钢骨架可以充当FRP柱的纵向钢筋，提高结构的延性；
本发明中的上部FRP双I型钢混凝土柱和下部FRP双I型钢混凝土柱通过连接钢管与型钢骨架的长孔凹槽插接装配为一体，避免了节点上下柱独立的问题，实现了装配式结构的同时也提高了结构的整体性，可提高柱子的承载力，达到了强柱弱梁的目的。
附图说明
图1是本发明组合节点的结构示意图；
图2是本发明组合节点的结构分解示意图；
图3是下部FRP双I型钢混凝土柱的结构分解示意图；
图4是双I型钢骨架的结构分解示意图；
图5是梁柱连接件的结构示意图；
图6(a)是设立外包管的示意图；
图6(b)是双I型钢骨架和外包管连接的示意图；
图6(c)是安装方法中第二步的示意图；
图6(d)是安装方法中第三步的示意图；
图6(e)是安装方法中第四步的示意图；
图6(f)是安装方法中第五步的示意图。
图中：1、FRP双I型钢混凝土柱；2、梁柱连接件；3、H型钢梁；4、上部FRP双I型钢混凝土柱；5、下部FRP双I型钢混凝土柱；6、连接圆筒；7、双I型钢骨架；8、十字肋；9、插板；10、钢筋固定板；11、长孔凹槽；12、钢筋；13、上环板；14、下环板；15、核心圆筒；16、侧板；17、连接板Ⅰ；18、连接板Ⅱ；19、连接板Ⅲ。
具体实施方式
为了使本发明的上述目的、特征和优点能够更加明显易懂，下面结合附图对本发明的具体实施方式做详细的说明。
在以下描述中阐述了具体细节以便于充分理解本发明。但是本发明能够以多种不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本发明内涵的情况下做类似推广。因此本发明不受下面公开的具体实施方式的限制。
如图1和图2所示，本发明所述的FRP钢混凝土柱与钢梁组合节点包括FRP双I型钢混凝土柱1、梁柱连接件2和H型钢梁3，FRP双I型钢混凝土柱1包括上部FRP双I型钢混凝土柱4和下部FRP双I型钢混凝土柱组成5，上部FRP双I型钢混凝土柱4和下部FRP双I型钢混凝土柱5之间通过连接圆筒6连接。
上部FRP双I型钢混凝土柱4和下部FRP双I型钢混凝土柱5均包括外包管和双I型钢骨架7。如图3和4所示为下部FRP双I型钢混凝土柱5的结构示 意图，本实施例以下部FRP双I型钢混凝土柱5为例，介绍FRP双I型钢混凝土柱的结构。外包管的内壁设有双I型钢骨架7，双I型钢骨架7包括十字肋8、位于四侧的插板9和钢筋固定板10，四个插板9的宽度小于FRP双I型钢混凝土柱外包管的内壁宽度。十字肋8由四个竖直方向设置的肋板连接而成，相邻肋板之间呈垂直连接，四个肋板共同连接组成十字肋。四个肋板上沿竖直方向分别设有开孔凹槽11，四个开孔凹槽到十字肋的中心距离相等，双I型钢骨架7采用四个插板9分别与下FRP双I型钢混凝土柱外包管的四侧内壁贴合的方式插入。钢筋固定板10安装在十字肋有长孔凹槽的一侧，钢筋固定板10的中间设有圆孔，可作为向下部FRP双I型钢混凝土柱灌注混凝土的通道，钢筋固定板10的四周设有钢筋插孔Ⅰ，钢筋12从钢筋固定板10的钢筋插孔Ⅰ插入到FRP-双I型钢混凝土柱的内部。
如图5所示，梁柱连接件包括上环板13、下环板14、核心圆筒15和侧板16，核心圆筒15的内壁直径大于连接圆筒6的外壁直径，核心圆筒15的上、下端部分别安装有上环板13和下环板14，上环板13和下环板14的圆孔四周均设有钢筋插孔Ⅱ，侧板16分别与上环板13、下环板14以及核心圆筒15垂直连接。
连接圆筒6穿过梁柱连接件的核心圆筒15，并分别插入上部FRP双I型钢混凝土柱4和下部FRP双I型钢混凝土柱5的双I型钢骨架7中十字肋的长孔凹槽11，上部FRP双I型钢混凝土柱4的钢筋12穿过上环板13的钢筋插孔Ⅱ，并与梁柱连接件3之间通过螺帽连接，下部FRP双I型钢混凝土柱5的钢筋12穿过下环板14的钢筋插孔Ⅱ，并与梁柱连接件3之间通过螺帽连接。H型钢梁3的翼缘与梁柱连接件2的上、下环板均通过连接板Ⅰ17和连接板Ⅱ18搭接，H型钢梁3的腹板与侧板16通过连接板Ⅲ19搭接。
图1的梁柱连接件2、上部FRP双I型钢混凝土柱4和下部FRP双I型钢混凝土柱5的外包管、H型钢梁3以及图2的双I型钢骨架7均提前在工厂中预制完成，现场只需安装即可。
上述FRP钢混凝土柱与钢梁组合节点的安装方法包括以下安装步骤，如图6(a)至图6(f)所示。
第一步，将双I型钢骨架7分别插入上部FRP双I型钢混凝土柱4和下部FRP双I型钢混凝土柱5的外包管的内壁，上部FRP双I型钢混凝土柱4的双I型钢骨架7的长孔凹槽朝下，下部FRP双I型钢钢混凝土柱5的双I型钢骨架7的长孔凹槽朝上。
第二步，将梁柱连接件2的下环板14的钢筋插孔Ⅱ与下部FRP双I型钢混凝土柱5的钢筋固定板10的钢筋插孔Ⅰ对齐，钢筋12从梁柱连接件2的下环板14的钢筋插孔Ⅱ穿入，依次插入下环板14与钢筋固定板10，钢筋12的上端由螺帽拧紧后固定连接。
第三步，将连接圆筒6穿过梁柱连接件的核心圆筒15，连接圆筒6插入下部FRP双I型钢混凝土柱5的双I型钢骨架7的长孔凹槽11内。
第四步，将连接圆筒6的上部插入上部FRP双I型钢混凝土柱4的双I型钢骨架7的长孔凹槽11内，通过连接圆筒6，实现了上部FRP双I型钢混凝土柱4和下部FRP双I型钢混凝土柱5之间的连接，提升了FRP双I型钢混凝土柱的整体性。钢筋12从梁柱连接件2的上环板13的钢筋插孔Ⅱ穿入，依次插入上环板13与钢筋固定板10，钢筋12的下端由螺帽拧紧后固定连接。
第五步，H型钢梁3的上下翼缘通过连接板Ⅰ17和连接板Ⅱ18分别与上环板13与下环板14搭接，H型钢梁3的腹板与侧板16通过连接板Ⅲ19搭接。
第六步，通过上部FRP双I型钢混凝土柱4的开口向FRP双I型钢混凝土 柱1的内部灌注混凝土，使连接部位通过混凝土的咬合作用形成整体，为了防止混凝土的溢出，上部FRP双I型钢混凝土柱4与梁柱连接件2、下部FRP双I型钢混凝土柱5之间的缝隙里填充有橡胶材料。
以上对本发明所提供的FRP钢混凝土柱与钢梁组合节点及安装方法进行了详细介绍。本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以对本发明进行若干改进和修饰，这些改进和修饰也落入本发明权利要求的保护范围内。对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (9)

  1. 一种FRP混凝土柱与钢梁组合节点，其特征在于，包括FRP双I型钢混凝土柱(1)、梁柱连接件(2)和H型钢梁(3)，FRP双I型钢混凝土柱(1)包括上部FRP双I型钢混凝土柱(4)和下部FRP双I型钢混凝土柱(5)，上部FRP双I型钢混凝土柱(4)与下部FRP双I型钢混凝土柱(5)通过连接圆筒(6)连接；
    所述FRP双I型钢混凝土柱(1)包括外包管和位于外包管内侧的双I型钢骨架(7)，双I型钢骨架(7)包括十字肋(8)、钢筋固定板(10)和分别位于四侧的插板(9)，插板(9)的宽度小于FRP双I型钢混凝土柱(1)的内壁宽度，十字肋(8)的四个肋板沿竖直方向设有长孔凹槽(11)，各长孔凹槽(11)到十字肋(8)中心的距离相等，钢筋固定板(10)的中心设有圆孔，四周设有钢筋插孔Ⅰ，钢筋固定板(10)安装在十字肋有长孔凹槽的一侧；
    所述梁柱连接件(2)包括上环板(13)、下环板(14)、核心圆筒(15)以及侧板(16)，核心圆筒(15)的内壁直径大于连接圆筒(6)的外壁直径，核心圆筒(15)的上下端部分别安装有上环板(13)和下环板(14)，上环板(13)和下环板(14)的中心设有圆孔，四周设有钢筋插孔Ⅱ，侧板(16)位于上环板(13)和下环板(14)之间，且与上环板(13)、下环板(14)以及核心圆筒(15)垂直连接；
    上部FRP双I型钢混凝土柱(4)的钢筋(12)穿过上环板(13)的钢筋插孔Ⅱ与梁柱连接件(2)连接，下部FRP双I型钢混凝土柱(5)的钢筋(12)穿过下环板(14)的钢筋插孔Ⅱ与梁柱连接件(2)连接，连接圆筒(6)穿过梁柱连接件(2)的核心圆筒(15)、并分别与上部FRP双I型钢混凝土柱(4)和下部FRP双I型钢混凝土柱(5)的双I型钢骨架(7)的十字肋(8)插接，H型钢梁(3)的翼缘与梁柱连接件(2)的环板搭接，H型钢梁(3)的腹板与 侧板(16)搭接。
  2. 根据权利要求2所述的FRP混凝土柱与钢梁组合节点，其特征在于，H型钢梁(3)的翼缘通过连接板Ⅰ(17)和连接板Ⅱ(18)与梁柱连接件(2)的环板搭接，H型钢梁(3)的腹板与侧板(16)通过连接板Ⅲ(19)搭接。
  3. 根据权利要求1所述的FRP混凝土柱与钢梁组合节点，其特征在于，上部FRP-双I型钢混凝土柱(4)的钢筋(12)与上环板(13)通过螺帽连接，下部FRP-双I型钢混凝土柱(5)的钢筋(12)与下环板(14)通过螺帽连接。
  4. 根据权利要求1所述的FRP混凝土柱与钢梁组合节点，其特征在于，上部FRP-双I型钢混凝土柱(4)和下部FRP-双I型钢混凝土柱(5)的外包管内均插入双I型钢骨架(7)。
  5. 根据权利要求1所述的FRP混凝土柱与钢梁组合节点，其特征在于，FRP-双I型钢混凝土柱(1)的外包管采用FRP材料。
  6. 根据权利要求1所述的FRP混凝土柱与钢梁组合节点，其特征在于，H型钢梁(3)的上翼缘与上环板(13)、H型钢梁(3)的下翼缘和下环板(14)、H型钢梁(3)的腹板和侧板(16)之间分别通过螺栓连接。
  7. 根据权利要求1所述的FRP混凝土柱与钢梁组合节点，其特征在于，FRP双I型钢混凝土柱(1)的钢筋(12)为FRP筋。
  8. 根据权利要求1所述的FRP混凝土柱与钢梁组合节点，其特征在于，连接圆筒(6)分别与上部FRP双I型钢混凝土柱(4)和下部FRP双I型钢混凝土柱(5)的双I型钢骨架(7)的十字肋(8)的长孔凹槽(11)插接。
  9. 一种权利要求1-8任一权利要求所述混凝土柱与钢梁组合节点的安装方法，其特征在于，包括以下步骤；
    第一步：将双I型钢骨架(7)分别插入上部FRP双I型钢混凝土柱(4) 和下部FRP双I型钢混凝土柱(5)的外包管的内壁，上部FRP双I型钢混凝土柱(4)的双I型钢骨架(7)的长孔凹槽(11)朝下，下部FRP双I型钢混凝土柱(5)的双I型钢骨架(7)的长孔凹槽(11)朝上；
    第二步：将梁柱连接件(2)的下环板(14)的钢筋插孔Ⅱ与下部FRP双I型钢混凝土柱(5)的钢筋固定板(10)的钢筋插孔Ⅰ对齐，钢筋(12)从下环板(14)的钢筋插孔Ⅱ穿入，依次插入下环板(14)与钢筋固定板(10)，钢筋(12)的上端由螺帽拧紧后固定连接；
    第三步：将连接圆筒(6)穿过梁柱连接件(2)的核心圆筒(15)，插入下部FRP双I型钢混凝土柱(5)的双I型钢骨架(7)的长孔凹槽(11)；
    第四步：将连接圆筒(6)的上部插入上部FRP双I型钢混凝土柱(4)的双I型钢骨架(7)的长孔凹槽(11)，钢筋(12)从上环板(13)的钢筋插孔Ⅱ穿入，依次插入上环板(13)与钢筋固定板(10)，钢筋(12)的下端由螺帽拧紧后固定连接；
    第五步：H型钢梁(3)的上、下翼缘均通过连接板Ⅰ(17)和连接板Ⅱ(18)分别与上环板(13)与下环板(14)搭接，H型钢梁(3)的腹板与侧板(16)通过连接板Ⅲ(19)搭接；
    第六步：通过上部FRP双I型钢混凝土柱(4)的开口向FRP双I型钢混凝土柱(1)的内部灌注混凝土，使连接部位通过混凝土的咬合作用形成整体。
PCT/CN2021/103907 2021-04-07 2021-07-01 Frp钢混凝土柱与钢梁组合节点及安装方法 WO2022213492A1 (zh)

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