CN207919385U - Reinforced composite material foam sandwich cylinder/column mixed connection structure - Google Patents

Abstract

The utility model discloses a reinforced composite material foam sandwich tube/column hybrid connection structure, which comprises at least two connected composite material sandwich tubes, the composite material foam sandwich tube includes a cylindrical cylinder body, and The two ends are respectively provided with annular composite material flanges, and the angle between the composite material flange and the cylinder is provided with foam sandwich ribs, and the outer end surfaces of both sides of the composite material flange are bonded with end parts. Reinforced cap; the composite foam sandwich tubes are connected and fixed by bolts through the installation holes; the tube body is a hollow cylindrical structure, and the tube body includes inner skin and outer skin, and foam arranged between the inner skin and the outer skin Core layer; the utility model takes material, structural form and rapid assembly as a whole that interacts with each other, and provides a hybrid connection mode that is lightweight, convenient for transportation, and rapid assembly and erection.

Description

A reinforced composite foam sandwich tube/column hybrid connection structure

technical field

The utility model belongs to the field of new materials, new structures and combined structures, in particular to a foam sandwich cylinder/column mixed connection structure of reinforced composite material.

Background technique

Many natural disasters in our country seriously restrict the safety of existing bridges, affecting the smooth traffic and the safety of people's property. Due to the impact of natural disasters, bridges are partially damaged resulting in insufficient bearing capacity, and traditional Bailey beam-column or truss structures are usually used for reinforcement or emergency repair support. However, most of the traditional support components are made of steel, which are difficult to transport to the construction site conveniently and quickly due to reasons such as quality and volume. Composite materials, as a light-weight and high-strength material, are increasingly used in large-bearing components in civil engineering. In order to obtain a cylindrical column structure with a large bearing capacity, it is often necessary to increase the diameter-thickness ratio, which will lead to local buckling of the cylindrical column structure while obtaining a large bearing capacity, thereby limiting the bearing capacity. A hybrid connection method was designed for a reinforced composite foam sandwich tube with high bearing capacity and local buckling resistance proposed by Associate Professor Li Feng's research group.

In view of the combination of flange plate-bolt-ring tube (column) foam sandwich rib-end reinforcement cap, the structural force transmission mechanism is relatively clear, and the force transmission path is relatively single, which is a kind of high load-bearing efficiency. The connection method meets the needs of easy transportation and quick assembly and erection in emergency repair support.

Utility model content

The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a reinforced composite material foam sandwich tube/column hybrid connection structure. As a whole, it provides a hybrid connection method that is lightweight, easy to transport, and quickly assembled and erected.

In order to solve the above technical problems, the utility model provides a reinforced composite foam sandwich tube/column hybrid connection structure, which includes at least two connected composite material sandwich tubes, and the composite material sandwich tube includes a cylindrical cylinder body , the two ends of the cylinder are respectively provided with annular composite material flanges, and the angle between the composite material flange and the cylinder is provided with foam sandwich ribs, and the outer end surfaces of both sides of the composite material flange are glued Knots with reinforced caps at the ends;

The size and shape of the end reinforcement cap and the composite material flange are the same, and there are several same installation holes at the corresponding positions of the end reinforcement cap and the composite material flange; the composite sandwich tubes are connected by bolts through the installation holes fixed;

The cylinder body is a hollow cylindrical structure, and the cylinder body includes an inner skin and an outer skin, and a foam core layer arranged between the inner skin and the outer skin.

The technical scheme that the utility model is further limited is:

The aforementioned composite material flange is obtained by flanging radially outwards from the inner skin of the cylinder and several layers of fiber cloth wound outside the end of the cylinder.

The aforementioned foam sandwich rib is a tapered ring formed by arranging and assembling several right-angled triangles around the end of the cylinder, and several layers of fiber cloth are wound around the slope surface.

The aforementioned end reinforcing cap is made of metal, and is bonded to the outer end face of the composite material flange by resin glue.

The number of mounting holes at each end of the aforementioned composite material sandwich tube is 6.

The thickness of the reinforcing cap at the end of the aforementioned composite foam sandwich tube is smaller than the thickness of the composite flange plate bonded thereto.

The beneficial effects of the utility model are:

The utility model discloses a reinforced composite material foam sandwich cylinder/column mixed connection structure, which is composed of at least two groups of composite material flanges, metal bolts, foam sandwich ribs and metal end reinforcement caps; two The composite material flange is obtained by flanging the inner skin of the cylinder and the fiber cloth wrapped outside the end of the cylinder radially outward at the end; the foam sandwich rib is made of several right-angled triangles and wrapped around the triangle The slope surface is composed of fiber cloth; the axial end and radial end of the end reinforcement cap are respectively connected with the inner wall of the cylinder and the composite material flange through resin glue; the bolts are reserved through the composite material flange and the end reinforcement cap. The coaxial hole connects the barrel as a whole. The lightweight reinforced composite material foam sandwich tube/column designed by the utility model is combined and assembled into a column structure through a flange plate-reinforcing rib-end reinforcing cap-bolt, so that its transportation, assembly and erection are quick and convenient, meeting the requirements It is used as an emergency repair support.

The product of the utility model adopts a composite material flange structure integrally formed with a reinforced composite material foam sandwich tube/column, wherein each composite material flange passes through the tube/column inner skin and is wrapped outside its end. Fiber cloth is turned inside out. This form makes the force transmission path clear when the cylinder/column is docked. At the same time, this product is integrated with the cylinder/column through the foam triangle assembled at the end of the cylinder/column and several layers of fiber cloth surrounding the triangle, which improves the joint strength of the cylinder/column and enhances the eccentricity of the cylinder/column. Compressive bearing capacity. This product also uses a metal reinforcement cap at the joint of the reinforced composite foam sandwich tube/column. This method can reinforce the composite material flange, the end of the tube/column and the composite material flange, and avoid the joint parts. Premature failure reduces the load carrying capacity. This product uses several bolts to quickly assemble and connect through the composite material flange at the end of the cylinder/column. .

Description of drawings

Fig. 1 is the front view of the utility model;

Fig. 2 is the structural representation of cylinder;

Fig. 3 is the structural representation of foam sandwich rib;

Among them, 1-composite material flange, 2-foam sandwich rib, 201-fiber cloth, 202-right angle triangle, 3-end reinforcement cap, 4-bolt, 5-cylinder, 501-inner skin, 502 - Outer skin, 503 - Foam core.

Detailed ways

Example 1

This embodiment provides a reinforced composite foam sandwich tube/column hybrid connection structure, as shown in Figure 1, including at least two connected composite foam sandwich tubes, the composite foam sandwich tube includes a cylindrical The cylindrical body 5, the two ends of the cylindrical body 5 are respectively provided with annular composite material flanges 1, and the angle between the composite material flange plate 1 and the cylindrical body 5 is provided with a foam sandwich rib 2, and the composite material End reinforcement caps 3 are bonded to the outer end surfaces of both sides of the flange 1; the end reinforcement cap 3 is the same size and shape as the composite material flange 1, and the corresponding position of the end reinforcement cap 3 and the composite material flange 1 There are several identical installation holes; the composite foam sandwich tubes are connected and fixed by bolts 4 through the installation holes; the cylinder body 5 is a hollow cylindrical structure, and the cylinder body 5 includes an inner skin 501 and an outer skin 502, as well as setting Foam core layer 503 between inner skin 501 and outer skin 502 .

As shown in Figures 2 and 3, the aforementioned composite material flange 1 is obtained by radially outward flanging the inner skin of the cylinder body 5 and several layers of fiber cloth 201 wound outside the end of the cylinder body 5 . The aforementioned foam sandwich rib 2 is a tapered ring formed by arranging and assembling several right-angled triangles 202 of foam material around the end of the cylinder body 5 , and several layers of fiber cloth 201 are wound around the slope surface. The aforementioned end reinforcing cap 3 is made of metal, and is bonded to the outer end surface of the composite material flange 1 by resin glue. The specific number of mounting holes is calculated based on the actual design, and the number of mounting holes at each end of the aforementioned composite foam sandwich tube is 6. The thickness of the end reinforcement cap used to connect other composite material foam sandwich tubes is smaller than the composite material flange plate bonded thereto.

The preparation and installation methods are as follows:

First, cut the foam core layer 503, the inner skin 501 and the outer skin 502 that meet the requirements of the size of the cylinder 5 and the size of the composite material flange 1, including the right-angled triangle 202 that wraps the end of the cylinder 5 and the foam sandwich ribs. Fiber cloth 201; the two ends are longer than the cylinder column height inner skin 501 and the fiber cloth 201 wrapped outside the end of the cylinder 5 is flanged radially outward along the end of the cylinder 5 to obtain a composite material flange 1; then cut to size The right-angled triangle 202 of foam material that meets the requirements is assembled into an annular conical rib at the end of the ring cylinder 5, and wrapped with several layers of fiber cloth, and the two ends of the fiber cloth are also connected to the outer wall of the cylinder 5 and the composite material The blue plates are superimposed, and then the cylinder body 5 and the joint are integrally prepared by vacuum-assisted resin introduction process; then the metal end reinforcement cap 3 with the same inner diameter as the cylinder body 5 and the same size as the flanging composite flange plate is customized , and then smear resin on the lower surface of the radial end and the outer surface of the axial end to combine with the integrally formed cylinder 5-joint as a whole; finally punch a number of same metal end reinforcement caps 3 and composite material flanges 1 Axis hole, and use metal bolt 4 to connect cylinder 5 two by two into one.

This embodiment discloses a reinforced composite material foam sandwich cylinder/column hybrid connection structure, which is composed of at least two sets of composite material flanges, metal bolts, foam sandwich ribs, and metal end reinforcing caps; two The composite material flange is obtained by turning the inner and outer skins of the cylinder body and the fiber cloth wrapped outside the end of the cylinder radially outward at the end; the foam sandwich rib is made of several right-angled triangles and wrapped around the triangles. The slope surface is composed of fiber cloth; the axial end and radial end of the end reinforcement cap are respectively connected with the inner wall of the cylinder and the composite material flange through resin glue; the bolts are reserved through the composite material flange and the end reinforcement cap. The coaxial hole connects the barrel as a whole. The light-weight reinforced composite foam sandwich tube/column designed in this embodiment is assembled into a column structure through the combination of flange plate-reinforcing rib-end reinforcing cap-bolt, which makes its transportation, assembly and erection fast and convenient, and meets the requirements of It is used as an emergency repair support.

The product in this example adopts a composite material flange structure integrally formed with a reinforced composite material foam sandwich tube/column, wherein each composite material flange passes through the tube/column inner skin and wraps around its end. Fiber cloth is turned inside out. This form makes the force transmission path clear when the cylinder/column is docked. At the same time, this product is integrated with the cylinder/column through the foam triangle assembled by the ring cylinder/column and several layers of fiber cloth outside the triangle, which improves the strength of the cylinder/column connection node and enhances the eccentric compression of the cylinder/column. Carrying capacity. This product also uses a metal reinforcement cap at the joint of the reinforced composite foam sandwich tube/column. This method can reinforce the composite material flange, the end of the tube/column and the composite material flange, and avoid the joint parts. Premature failure reduces the load carrying capacity. This product uses several bolts to quickly assemble and connect through the composite material flange at the end of the cylinder/column.

The above embodiments are only to illustrate the technical ideas of the utility model, and cannot limit the protection scope of the utility model with this. Any changes made on the basis of the technical solutions according to the technical ideas proposed by the utility model all fall into the scope of the utility model. within the scope of the new protection.

Claims (6)

1. a kind of reinforced composite material foam core cylinder/column Hybrid connections structure, which is characterized in that be connected including at least two Composite material foam core cylinder, the composite material foam core cylinder includes cylindrical cylinder（5）, the cylinder（5）'s Both ends are respectively equipped with the flange made of composite material disk of circular ring shape（1）, the flange made of composite material disk（1）With cylinder（5）Angle Place is equipped with foam core rib（2）, the flange made of composite material disk（1）Both sides outer end face be bonded with end enhancing cap（3）；

The end enhances cap（3）With flange made of composite material disk（1）Size shape is identical, and end enhances cap（3）With composite wood Expect ring flange（1）Corresponding position be equipped with several identical mounting holes；Bolt is used between Composite Sandwich cylinder（4）Pass through The mounting hole is connected and fixed；

The cylinder（5）For hollow cylindrical structure, cylinder（5）Including inside panel（501）And exterior skin（502）, and setting In the inside panel（501）With exterior skin（502）Between foamed core（503）.

2. reinforced composite material foam core cylinder according to claim 1/column Hybrid connections structure, which is characterized in that institute State flange made of composite material disk（1）By cylinder（5）Inside panel（501）And it is wrapped in cylinder（5）If the dried layer outside end is fine Wei Bu（201）Radially obtained by flange, exterior skin herein（502）Only flange radially inward, exterior skin flange size is not More than cylinder（5）Foamed core thickness.

3. reinforced composite material foam core cylinder according to claim 1/column Hybrid connections structure, which is characterized in that institute State foam core rib（2）For several right angle trigonometry bodies（202）Around cylinder（5）Conical annulus made of end arranged cells spelling group, and If winding dried layer fiber cloth along its slope surface circumferential direction（201）.

4. reinforced composite material foam core cylinder according to claim 1/column Hybrid connections structure, which is characterized in that institute State end enhancing cap（3）It is made of metal, flange made of composite material disk is bonded in by resin glue（1）End face outside on.

5. reinforced composite material foam core cylinder according to claim 1/column Hybrid connections structure, which is characterized in that institute It is 6 to state installation hole number of the Composite Sandwich cylinder per one end.

6. reinforced composite material foam core cylinder according to claim 1/column Hybrid connections structure, which is characterized in that institute The thickness for stating the end enhancing cap of composite material foam core cylinder is less than the thickness of flange made of composite material disk cohesive therewith.