Casting type composite material bending pultrusion arched beam-inhaul cable connection anchoring joint

Abstract

The utility model discloses a pouring type composite material bending pultrusion arched beam-inhaul cable connection anchoring node, which belongs to the technical field of pultrusion section bar connection and comprises a bending pultrusion arched beam and a connection anchoring node, the connecting anchoring node comprises an end counter-force plate, a cover plate, an embedded arched beam support and a prestress inhaul cable anchor, the embedded arched beam support and the prestress inhaul cable anchor are fixedly arranged on the end counter-force plate, the bent pultrusion arched beam and the end counter-force plate are connected through the embedded arched beam support, and the shape of the embedded arched beam support is matched with the shape of the section of the bent pultrusion arched beam. The end of the bent pultrusion arched girder is inserted into the embedded arched girder support, the anchorage device is placed in the prestressed inhaul cable anchor, the prestressed inhaul cable anchor is fixedly connected with the prestressed inhaul cable, and the cover plate is connected with the end counter-force plate. By means of the structure, the problems that in the pultrusion profile connecting process, pultrusion profiles are prone to being split and damaged due to the fact that shearing stress is concentrated in traditional bolt connection, and bonding materials in a traditional adhesive connection method are poor in bearing capacity and durability are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pultruded profile connection, in particular to a cast-type composite material curved pultruded arch beam-cable connection anchoring node. Background Art

[0002] In recent years, my country has achieved breakthroughs in key technologies in the field of materials, among which fiber-reinforced composite materials have stood out in the field of civil engineering. The material has high specific strength and modulus, excellent corrosion resistance and outstanding fatigue resistance, and has shown strong application potential and competitiveness in civil engineering construction at home and abroad. Among them, the pultruded profiles made by the pultrusion molding process have excellent performance, but some problems that need to be solved have also emerged during use, such as the connection problem of the pultruded profiles and the anchoring problem of the prestressed cables.

[0003] The connection method of pultruded profiles is one of the hot issues in the field of composite materials. Due to the main characteristic of pultruded profiles that they are "non-weldable", the force mode caused by bolt connection is prone to cause stress concentration, which makes the pultruded profiles prone to splitting and damage at the bolt holes. Although adhesive connection can eliminate the stress concentration caused by bolt holes, the bearing capacity of the adhesive material is poor, and the durability formed under ordinary curing process is poor. The traditional connection and anchoring method is to use a set of customized steel connectors, which will not only increase the deadweight of the structure, but also introduce steel corrosion problems. The inconsistency between the service life and maintenance cycle of the components will lead to an increase in the subsequent maintenance costs.

[0004] Therefore, a full-composite beam string structure consisting of a curved pultruded arch beam and a carbon fiber composite cable is proposed. The structure uses glass fiber curved pultruded profiles as arch beams, glass fiber straight pultruded profiles as struts, and carbon fiber straight pultruded reinforcement as cables. Compared with traditional steel beam string structures, the full-composite beam string structure has many advantages, such as light weight, small foundation, corrosion resistance, fast construction and low measures cost.

[0005] In this all-composite material beam string structure, the utility model can be used as a node for connecting the beam and the cable. Utility Model Content

[0006] The utility model aims to provide a cast composite material curved pultruded arch beam-cable connection anchor node, which solves the problem that in the process of pultruded profile connection, the traditional bolt connection causes shear stress concentration, resulting in easy splitting and damage of the pultruded profile, and the traditional adhesive connection method has poor bearing capacity and durability of the adhesive material.

[0007] To achieve the above-mentioned purpose, the utility model provides a cast-type composite material curved pultruded arch beam-cable connecting anchor node, including a curved pultruded arch beam and a connecting anchor node, the connecting anchor node including an end reaction plate and an embedded arch beam support and a prestressed cable anchor fixedly arranged on the end reaction plate, the curved pultruded arch beam and the end reaction plate are connected through the embedded arch beam support, the shape of the embedded arch beam support is adapted to the cross-sectional shape of the curved pultruded arch beam, the end of the curved pultruded arch beam is inserted into the embedded arch beam support, an anchor can be placed in the prestressed cable anchor, a prestressed cable is fixedly connected to the prestressed cable anchor, and a cover plate is connected to the end reaction plate.

[0008] Preferably, the prestressed cable anchor is provided with a prestressed channel one penetrating front to back, and a prestressed channel two penetrating front to back is provided at a corresponding position of the end reaction plate, an anchor is placed in the channel two, and the prestressed cable is passed through the anchors of the prestressed channel one and the prestressed channel two.

[0009] Preferably, the prestressed cable is tightly fitted to the inner walls of the anchors of the prestressed channel one and the prestressed channel two.

[0010] Preferably, the embedded arch beam support and the prestressed cable anchor are made of fiber-reinforced composite material.

[0011] Preferably, the prestressed cable is a fiber-reinforced composite cable or a steel cable.

[0012] Therefore, the utility model adopts the above-mentioned cast composite material curved pultruded arch beam-cable connection anchor node, which has the following beneficial effects:

[0013] (1) The curved pultruded arch beam can be connected to the connecting anchor node by setting the embedded arch beam support. The connecting anchor node is made by a molding method and finally cast with a thermoplastic resin. The embedded arch beam support is made of a fiber-reinforced composite material, such as carbon fiber and glass fiber, which has high compressive strength and durability, and can effectively avoid the shear stress concentration phenomenon at the connection;

[0014] (2) The setting of prestressed cable anchors can effectively improve the integrity and connection firmness of the curved pultruded arch beam and the prestressed cable, and the end reaction plate can effectively resist the bending moment formed between the cable and the arch beam;

[0015] (3) The structure is simple and light, which effectively reduces the deadweight of the structure. The service life and maintenance cycle of the components are consistent, the maintenance cost is low, and it is conducive to later maintenance.

[0016] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a cast-type composite material curved pultruded arch beam-cable connection anchor node of the utility model;

[0018] Figure 2 It is a schematic diagram of an end reaction plate of a cast composite material curved pultruded arch beam-cable connection anchor node of the utility model;

[0019] Figure 3 It is a schematic diagram of the installation of a cast composite material curved pultruded arch beam-cable connection anchor node of the utility model;

[0020] Figure 4 It is a working schematic diagram of a cast-type composite material curved pultruded arch beam-cable connection anchoring node of the utility model.

[0021] In the figure: 1. Embedded arch beam support; 2. Prestressed cable anchor; 3. End reaction plate; 4. Prestressed channel one; 5. Cover plate; 6. Prestressed channel two; 7. Bended pultruded arch beam; 8. Anchor; 9. Prestressed cable; A. Installation step 1; B. Installation step 2; C. Installation step 3; D. Installation step 4. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described below through the accompanying drawings and embodiments.

[0023] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] As the instruction manual Figure 1 The utility model discloses a cast composite material curved pultruded arch beam-cable connection anchor node, such as Figure 1As shown, its structure includes a curved pultruded arch beam 7 and a connecting anchor node. The connecting anchor node includes an end reaction plate 3, a cover plate 5, an embedded arch beam support 1 fixedly arranged on the end reaction plate 3, and a prestressed cable anchor 2. The connecting anchor node is made by a molding method and finally cast with a thermoplastic resin.

[0025] The curved pultruded arch beam 7 and the end reaction plate 3 are connected through an embedded arch beam support 1. The shape of the embedded arch beam support 1 is adapted to the cross-sectional shape of the curved pultruded arch beam 7. The end of the curved pultruded arch beam 7 is inserted into the embedded arch beam support 1. The material of the embedded arch beam support 1 is a fiber reinforced composite material, such as carbon fiber and glass fiber. The embedded arch beam support 1 can be designed to have any required geometric dimensions and cross-sectional forms. The beam cross-sectional forms include commonly used forms such as I-shaped, box-shaped, trough-shaped and circular. A prestressed cable 9 is fixedly connected to the prestressed cable anchor 2. The prestressed cable 9 is a fiber reinforced composite cable or a steel cable. A prestressed channel 1 4 is provided on the prestressed cable anchor 2, and a prestressed channel 2 6 is provided at the corresponding position of the end reaction plate 3. The prestressed cable 9 is provided in the anchor 8 of the prestressed channel 1 4 and the prestressed channel 2 6. The prestressed cable 9 fits tightly with the inner wall of the anchor 8 of the prestressed channel 1 4 and the prestressed channel 2 6 . The end reaction plate 3 is used to resist the bending moment formed between the prestressed cable 9 and the curved pultruded arch beam 7 . The cover plate 5 is connected to the end reaction plate 3 .

[0026] In the specific implementation process, the connecting anchor node includes an end reaction plate 3, a cover plate 5, an embedded arch beam support 1 fixedly arranged on the end reaction plate 3 and a prestressed cable anchor 2. The connecting anchor node is made by a molding method and finally cast with a thermoplastic resin.

[0027] During installation, follow the instructions Figure 3 As shown, the following steps are included:

[0028] A. Insert the end of the curved pultruded arch beam 7 into the embedded arch beam support 1;

[0029] B. The anchor 8 is passed through the prestressed hole 2 6 at the end reaction plate 3 and the prestressed hole 1 4 at the prestressed cable anchor 2 in sequence;

[0030] C. The cable 9 is fixed in the prestressed channel 1 4 and the prestressed channel 2 6 through the anchor 8, so as to achieve the purpose of fixing the cable 9 on the end reaction plate 3;

[0031] D. Fix the cover plate 5 to the end of the end reaction plate 3, and the installation is complete for use.

[0032] Therefore, the utility model adopts a cast-type composite material curved pultruded arch beam-cable connection anchoring node of the above structure, which solves the problem that in the process of connecting pultruded profiles, the traditional bolt connection causes shear stress concentration, resulting in easy splitting and damage of the pultruded profiles, and the traditional adhesive connection method has poor bearing capacity and durability of the bonding material. The curved pultruded arch beam can be connected to the connection anchoring node by setting the embedded arch beam support. The connection anchoring node is made by a molding method and finally cast with a thermoplastic resin. The material of the embedded arch beam support is a fiber-reinforced composite material, such as carbon fiber and glass fiber, which has high compressive strength and strong durability, and can effectively avoid the phenomenon of shear stress concentration at the connection. The setting of the prestressed cable anchor can effectively improve the integrity and connection firmness of the curved pultruded arch beam and the prestressed cable. The structure is simple and light, which effectively reduces the deadweight of the structure. The service life and maintenance cycle between the components are consistent, the maintenance cost is low, and it is conducive to later maintenance.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.

Claims

1. A cast composite material curved pultruded arch beam-cable connection anchor node, comprising a curved pultruded arch beam and a connection anchor node, characterized in that: The connecting anchoring node includes an end reaction plate, a cover plate, an embedded arch beam support fixedly arranged on the end reaction plate, and a prestressed cable anchor. The curved pultruded arch beam and the end reaction plate are connected through the embedded arch beam support. The shape of the embedded arch beam support is adapted to the cross-sectional shape of the curved pultruded arch beam. The end of the curved pultruded arch beam is inserted into the embedded arch beam support. Anchors can be placed in the prestressed cable anchor. The prestressed cable anchor is fixedly connected with a prestressed cable. The cover plate is connected to the end reaction plate.

2. A cast composite material curved pultruded arch beam-cable connection anchor node according to claim 1, characterized in that: The prestressed cable anchor is provided with a prestressed channel 1 penetrating front to back, and a prestressed channel 2 penetrating front to back is provided at a corresponding position of the end reaction plate, an anchor is placed in the channel 2, and the prestressed cable is passed through the anchors of the prestressed channel 1 and the prestressed channel 2.

3. A cast composite material curved pultruded arch beam-cable connection anchor node according to claim 2, characterized in that: The prestressed cable is tightly fitted to the inner walls of the anchors of the prestressed channel one and the prestressed channel two.

4. The cast composite material curved pultruded arch beam-cable connection anchor node according to claim 1, characterized in that: The embedded arch beam support and the prestressed cable anchor are both made of fiber-reinforced composite materials.

5. The cast composite material curved pultruded arch beam-cable connection anchor node according to claim 1, characterized in that: The prestressed cable is a fiber-reinforced composite cable or a steel cable.

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