TWI262232B - Anchorage system for structural reinforcement of fiber reinforced plastic materials and the like - Google Patents

Abstract

An anchorage system for structural reinforcement of surface bonded reinforcing sheet, plate or shell made of fiber reinforced plastic (FRP) or steel or other metallic or non-metallic materials is disclosed. The anchorage system comprises an anchor tube or solid rod with a circular outer surface and a lock-down means provided along the longitudinal axis of the tube or rod. The lock-down means can be either an anchor bolt mounted through the center of the anchor tube or rod or an anchor strap pressed against the circular surface of the tube or rod into the members to be reinforced. The FRP reinforcing sheet, plate or shell is bonded to the surface of the structural member, and optionally, the supporting member, and passes underneath the outer circular surface of the tube or rod. The tube or rod is held securely by the lock-down means which, in turn, compresses and holds in place the FRP sheet against the surface of the structural member.

Description

262232 IX. Description of the Invention: [Technical Field of the Invention] ☆ The present invention relates to an anchoring system for compressing a structural reinforcing sheet, a plate or a shell through a concentric characteristic inherent in a system load transfer mechanism, the structure The reinforcing sheets, sheets or shells are made of fiber-consumable M (FRP) or steel or other metallic or non-metallic materials and are bonded to the surface of the structure with a cementitious material. [Prior Art]

Structural elements, such as walls or columns in buildings or bridges or other structural systems, often need to resist the pulling force of the lifting and the "bow moment" generated by the overturning action. The overturning action is derived from the location or external The environmental movements cause, and the strength of the mouth structure is enhanced, especially from the lateral load caused by strong winds and earthquakes. The old structure of the money about Canada and the United States and the world is used for the green stay. 'The need to be repaired or strengthened, rectified or refurbished or modified to increase the carrying capacity to the required level of performance. During the above-mentioned maintenance process, the tension load or bending moment bearing capacity of each component is improved, and/or wear Or the actual device that the damaged structural element returns to the bearing capacity with undamaged is important to enhance or restore the tensile load or bending moment of the 旻, 兀, 藉, Sticking the surface of the pavement with the outer surface

Reinforcement. Sheet steel or H-th sheets are used to achieve this. Since the recent 1990s, fiber reinforced plastic (FRP) sheets have been shown as bamboo, as a better alternative to steel sheets. The frp replacement, typically carbon fiber reinforced enough for the ancestors (carbon fiber reinforced plastic, 5 J262232 . CFRP), glass fiber reinforced plastic (g]ass沘, GFRP), aramid fiber reinf〇rced p AFRP, of which AFRP is based on its commercial The name is generally known as Kevlar, which has the advantages of high strength, light weight and excellent resistance to general reinforced steel. The general FRP replacement reinforcement system consists of epoxy resin (p 〇xy) or other adhesive bonding to the surface of the structural element. The surface adhered by the FRP sheet 'in the direction of the parallel fibers enhances the tensile load applied to the 'Geji' component. In the structural elements and supports The key to the component or foundation is that the load of the party in the A FRP film must be transferred to the supporting component or the key to the base, the first transfer, and the FRp to strengthen the system. The main, misaligned system has an L-shaped angle tin, the side of which is parallel to the structural element which is further FRP-reinforced, and the other side is parallel to the surface of the supporting element. The outer surface (4) FRP 4 is pressed by the stomach (4) and abuts against the surface of the structural element and the component #1, which is a one-to-one use of a plurality of anchor bolts through the corner anchor.

The side of the county is locked to the cutting element (see Figure 由于. Because of the FRP 6 load direction 14. Hai! Tian angle to the eccentricity between the pressing parts of the support element, the angle of the bend or broadcast from the I action The silk stalker will cause the FRP sheet to change from its own load plane to a severely disengaged plane. This leads to the ability of the frp sheet to withstand the load and the resistance to lower the handle, ^ 〇, low 'know' don't worry when the FRP piece is repeated When subjected to periodic load application under load and unloading, it will cause fiber breakage or cutting, which is caused by the pureness of the strand: the distortion of the plane and the warping effect of the repeating cycle of 12 1262232. The FRP strengthening system The early damage is due to the eccentric relationship between the load on the PR sheet and the lock-up resistance exerted by the β-Hao tin system. Another challenge in using FRP as a structural reinforcement is the support element or foundation and FRP sheet. There is no problem between them. Nanni et al. (c〇ncrete International Journal: January 1st, 1999, Vol. 21, No. 1 (), Design and Structure), pages 49-54,, FRP reinforcement surface Anchor for fixing,,, A. N_i, Khalifa A ·, τ · Alkhrdajl and s Unsbury) trying to use

A U-shaped anchor prevents the unbonded FRp sheet from being reinforced. In the invention of Nanni et al., a u-shaped anchor is inserted into the bent portion at the end of the FRp reinforcing sheet to enter a predetermined groove in the support member or the base (see Fig. 2). The purpose is to exert the anchoring force in the anchor by the embedding of the FRp sheet. A viscous glue is used to fill the groove. Alternatively, the end of the FRP sheet may be wrapped around an FRp rod in the trench. However, the rigid rod obviously does not carry the force exerted by the tin. Moreover, the adhesive agent may have insufficient monthly b strength to hold the pRp sheet in the groove. In addition, in the invention of Nanni f, the u $ tin system works on the load from the FRP sheet and transferred to the concrete foundation, completely depending on the FRP sheet and the concrete on the inner surface of the groove. The shear strength and tensile strength provided are determined. (4) The wrong arrangement is only to increase the length of the gripping area of the transferable load. The eccentricity between the tensile force carried by the FRp piece on the upright beam and the resistance provided by the set of anchors still exists. The inner surface of the groove surrounds the concrete m-junction (4). Therefore, an improved mis-determination system is necessary. The system can provide the same entanglement in the transfer mechanism of the load 262232 and eliminate the unnecessary overturning. The team as a new one is centered on itself. The anchoring system, in addition to the eccentricity problem and the FRp v μ FRP material can fully exert its high strength without early destruction. SUMMARY OF THE INVENTION [This invention] is to provide an anchoring system for transferring structural components and load to the surface reinforcement of the supporting element without eccentricity problem, 1 by one eight The precision is pressed against the surface reinforcement by the cup or the outside of the tube. According to one embodiment of the present invention, an anchoring system for a structural reinforcement member, a shackle, a _3, a (a) abutting one structural member and a supporting member, The inner side of the corner surface is bonded with a surface strengthening medium composed of a structural reinforcement; (1) a cylindrical wrong-shaped device that abuts against the inner corner of the surface of the structural element and the supporting element (4)及; and (C) a fixed-loading LJ locker set along the axial length of the anchoring device for mounting pressure % &, +, a, and the anchoring device It is placed against the bonding surface. Another object of the present invention is to provide a simple ampoule tinning mechanism that does not rely on novelty or advanced technology for manufacturing or processing. A further object of the present invention is to make the tin-fixing mechanism applicable to structures of various materials and shapes, such as reinforced concrete or y?, 4' stone structures, such as straight walls and structures having a flat surface. Du Zaofan pieces and structural elements having a curved surface such as curved walls and round cymbals. The surface-enhancing medium suitable for use in the tin-setting system of the present invention may be selected from the group consisting of FRP sheets, sheets and shells, and other metal or non-metal materials similar to yours. Synthetic material. [Embodiment] The present invention is applicable to a general structure additive. The surface strengthening medium is a surface strengthening sheet, a surface reinforcing sheet or a surface strengthening shell. Also preferably, the structural reinforcement is made of non-metal or, more preferably, The 槿 槿 舲丄 舲丄 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

*Integrated wall reinforcement applications, as exemplified by the present invention, are directed to such as building a flower, '. The basis of such a support element for reinforcement may not be necessary = surface-enhanced strengthening medium, % FRp piece, may only need to be used in the structure, the structural element usually refers to a non-horizontal structure (most Examples of parts 疋 upright structure). Therefore, in order to enhance the target against the strength of the earthquake, the extended FRP sheet is not drilled to the support structure. The preferred embodiment of the present invention teaches an anchoring system whereby the transfer is applied from the FRP to the circular surface of the anchoring tube or rod, and vice versa by the locking device in the field system. The pressing force is concentrated in the center of the official or pole of the Palladium plus JL tooth, so the eccentric layout centered on itself is maintained on the load transfer mechanism. > 3A and 3B, - Structure Plus & 1QQ' for FRp sheet 2 is constructed by FRP sheet 200 wound around the outer surface of tin tube 1〇8, thereby The load carried by the FRP #200 is transferred to the anchoring system 100 in the direction of the constant vertical direction and the 1 field commander 108. As shown in Fig. 3A, the element and the supporting member are perpendicular to each other, that is, 90. The application of the present invention is not limited to the particular structural orientation of 9 1262232. The FRP sheet 200 utilizes an epoxy tree. Ten hole tree 曰 300 or any other conventional bonding material is ablated to the surface of the reinforced structural element 1 〇 4 (vertical in Figure 3A), and to the branch element 106 table φ (level in Figure 3A). Supporting element

The piece 106 is a concrete foundation, and the structural element #1〇4 is generally a concrete wall. When the tensile load is applied to the FRP #200, the reaction is carried out in the tender and the FRP 4 2〇〇 is joined to the structural element iQ4 and the branch component 〇 “the interface shear provided by the resin. The force is perpendicular to the anchoring tube 1〇8 and the center of the anchoring f 108 is equally divided between the surface of the structural element and the surface of the branch element. The change f1G8xian is equivalent to the pulley, and the tensile stress is covered by In the vertical part of the structural element 1〇4, the fr" 2〇〇 is carried, and the same is applied to the fine horizontal part of the FRU, which is transferred by bonding to the epoxy resin. The concrete surface of the building element ι〇6. The result of the reaction is to anchor the anchor 108 in the aforementioned direction, that is, from the FRP sheet 200. 45, that is, the structural element and the supporting S piece respectively. The direction of the shearing force of the two FRp sheets. In order to eliminate the tendency of the pulling out, a locking device 1〇2 is in the direction of 45. (that is, the resultant force of the two FRP sheets, especially the reinforced joint structure.兀1Q4 #Support element (10) surface angle) through the pre-drilled hole 108 to ensure installation The anchoring tube ι 8 provides an anchoring force through the center of the tube. The direction of application is completely opposite to the pulling force. As shown, the locking device 1〇2 is an anchor bolt. 12. The tinting force known by the locking device 102 can also be selectively applied to the anchoring tube 108 through the curved sleeve Μ* (see Figure $). 10 1262232 The structural elements and the supporting elements are non-dry and non-interactive. In the vertical case, the result of the extraction tube is the angle of the resultant force of the 'rKP sheet, which is the angle between the two structural elements and the bonding surface of the supporting member and the protective member. The lock component should be installed at the bisector angle of the Fuding tube. JL11 The Suding system of the present invention can be described by the following example of reinforcing the wall. The design of the wrong system is the load bearing side of the wall sample. M'frp ^ plus the weight of the tube. The size of the tube is optional 'so that the maximum stress of the wrong tube under the design load does not exceed (4) the yield strength of the tube material. When - right angle flat wall panel The top is subjected to a lateral force, using deep beams To determine the vertical tensile force distribution of the foundation, it is found that the vertical tensile force is the largest at the end of the wall and the amount decreases toward the center of the width of the wall. The distribution of the vertical tensile load (linear load) is applied to the surface of the tin duct' and The surface is in contact with the FRP sheet. The load is only the portion applied to the load of the misaligned tube. The second portion of the load is applied by a horizontally extending FRP sheet on the base surface, which is used to cause pulling. The effect of this = can be regarded as equal to the load applied by the vertical FRP structure wall. The combined force of the two components is the design load mentioned in the previous paragraph. The maximum load bearing of the reinforced wall of the FRp sheet is attached to both sides. The force 'depends on the strength of the tensile material of the Xiao FRp sheet and the strength of the wall material. In the conceptual feasibility and proven research of the anchoring system of the present invention, a 3-inch and 0.5-inch thick steel structural tube was selected for the fabrication of the misalignment tube of the anchoring system. It is used in the reinforced ruler 1 〇〇1, 1262232 xl500mm wide x 1795_height concrete right angle shear wall plane and the top of the force wall is subjected to a lateral force load of 500kN. A curved cushion is curved The surface is matched with the curved shape of the misaligned tube, and is made of a steel plate (3.5, x2.5"χ1"). A hole of a diameter 穿" penetrates the sleeve and the anchor tube. Thereby, the locking device is worn. The locking device in this example is a threaded rod having a diameter of 2 inches, and is provided with a flat flame and a nut. Figure 4 _ does not anchor the official 1 〇 8 and the pre-drilled hole 丄 (10), for the fixed lock to move through the set. A suitable locking device 102 includes a chemical tin (mical adhesive anchor), an expansion anchor (eXpansi〇n grab (3)), an anchor bolt, an anchor strap, and a nut and a nut. & In the case where the locking device 102 is placed with the FRP at the corner of the structure, there is an obstacle. The other embodiment of the inventive anchoring system provides an anchoring overlap: 118# to press against the tin. Tube (10). In this example, & number of tin splicing V 118 large teeth into the reinforced structural element and the supporting element Figure 7A), || This ensures that the pinning fi 1 〇 8 is stable. Tin Ding receives 118 cables or whip that can be made of steel cables or steel whip or other suitable materials. h Sometimes the support element may allow the anchoring strap to be as shown in Figure 7B: the tooth exits the structure. In Fig. 7B, a plurality of anchoring straps protrude out of the support member and are securely mounted to the support member by a waffle and nut 122. Figures 7A and 7B show that the FRP surface is drilled on both sides of the structural element ^ ′ main 疋 疋 In order to strengthen a free standing erect wall, such double sided drilling is worthwhile. However, the FRp surface is double-sidedly bonded in most of its 12, 1262232 ‘he is not necessary in his case. In another embodiment of the anchoring system of the present invention, an anchoring bar 108 is used in place of the anchoring tube 108 to press or enclose the frp sheet (see Figure 6). Referring to Figure 8 'the invention|another embodiment of the seedling system is the use of a half circle ^ f 112 or a semi-circular rod (not shown). Since this system applies the same / bone wheel concept, the resultant force for pulling out the brocade tube is always 45 with the FRP sheet. The angle between the two FRP sheets acting on the structural element and the supporting element is the same, and the structural element and the supporting element at this time are perpendicular to each other. Mounted to the semicircular tube or rod 45 by using a similar locking device. Where necessary, the necessary anchoring force can be provided through the center of the tube. As previously mentioned, in the case of non-perpendicular structural elements and support elements, the locking device 102 should be mounted on the semi-circular tube 112 and between the structure, the bonding surface of the element and the supporting element. At the corner. Figure 9 teaches another embodiment of the anchoring system of the present invention. The figure shows a side cross-sectional view of an anchoring system and a locking device that is pressed against an anchoring tube wrapped by one end of the FRP sheet, and the other portions of the FRP sheet are reinforced Structural components. This modified system application is particularly advantageous in the case of a concrete foundation support element that does not provide a clean surface for continuous form FRP bonding, or that the FRP sheet is of limited size and the end of the sheet is adjacent to the anchor tube. Another embodiment, such as that shown in Figure 10, can be used to increase the strength and performance of the free end overlap of two FRP sheets. In this case, the anchoring tube can be fitted to the first free end of the FRP sheet bonded to the structural element, and the second 13 1262232 free end of the FRP sheet bonded to the supporting element. unit. This allows the FRP sheet to continue to bond with its free end. The anchoring system of the present invention is applied to FRp sheets bonded to a flat surface (see Fig. 11), however due to its special design, it is more advantageous to apply to curved surfaces such as cylindrical or curved wall structures. In the case of a strong arc, Figure Η shows a kind of 'a bendable tinned tube is along the arc of the two walls: Π and' and is pressed by the appropriate locking device live. Based on the size and curvature of the walls, the 疋4 can be made of a material having elastic strength to allow the bending of the tube.

The application of the system of this (4) is not limited to the use of tin with diced tablets. (d) The structure and/or the cut surface may be reinforced by a drill-in or wire-bonded reinforced sheet: a sheet or sheet made of FRp or a steel or metal material. It is not difficult to know that the invention "^田疋 system is not only suitable for use in the construction of new structures, but also for repairing existing structures. Renovation of this system: (4) The concept is obviously not limited to the refurbishment of existing structures or the improvement of the seismic capacity of the structure and supporting walls. Any new building structure can be combined with the hair, the need to rise, the front, the ..., the sub-, the structural strengthening and improvement in which thinking. It is more understandable that the column is only as a brother and not a limitation. The m-month of the basic features of the present invention is not reversed, "the spirit of the invention and the L brother of the non-levy", so that the embodiments are In the same sense and equal scope within the scope of this patent application, the monthly households ^_, any included.] The changes made in the temple are all 14 1262232 [Simplified illustration] Figure 1 shows A conventional L-shaped angle anchor; Figure 2 shows a U-shaped seedling that is conventionally embedded in a predetermined groove of a structural element; Figure 3A is a side cross-sectional view of an anchoring system of the present invention showing a lock The garment is pressed against an anchoring tube and joined to the FRP sheet portion that is bonded to the reinforced structural element and the supporting member; FIG. 3A is an anchoring tube and the passing through an arc FIG. 4 is a cross-sectional view of an anchoring tube used in the present invention; FIG. 5 is a side view of a curved sleeve; FIG. 6 is an anchoring system of the present invention; Side cross-sectional view showing a locking device that presses an anchor rod and adheres to the reinforced structure The FRP sheet portion of the piece and the support member are joined together; a side cross-sectional view of the anchoring system of the present invention showing an extended misaligned strap 'mounted in the structure and the component Combined with the FRP sheet portion section of the reinforced structural element and the supporting element, the figure is a side cross-sectional view of the anchoring system of the present invention, showing an extended misaligned lap joint, the end of which protrudes Extending through the support member and securing the support member to the support member with a waffle and a nut; Figure 8 is a side cross-sectional view of the anchoring system of the present invention showing a locking device pressing - semi-circular anchoring The tube is combined with the portion of the FRP sheet of the reinforced structural element and the support member; 15 1262232 Figure 9 is a side cross-sectional view of the anchoring system of the present invention showing a lock The device is pressed against an anchoring tube having a tip end of the FRP sheet, the FRP sheet portion being bonded to the reinforced structural member; Figure 10 is a side cross-sectional view of the anchoring system of the present invention, showing a The locking device presses an anchor tube to press it against two Figure 15 is a perspective view of an anchoring system of the present invention in which the FRP sheet is bonded to a flat wall;

Figure 12 is a perspective view of an anchoring system of the present invention in which the FRP sheet is bonded to a curved wall. 16 1262232 < [Description of main component symbols] 100 · · • Tinding system 112 · · Semi-circular tube 102 · · • Locking device 114 · · • Curved cushion 104 · · • Structural element 118· * • Tinned 1 joint belt 106 · · • Support element 120* · Tin lock thread 108 · · • Anchor tube 122. · • Nut 108' · • Hole 200 · · • FRP piece 110 · · • Anchor Fixed rod 300· · • Epoxy

17

Claims (1)

1262232 X. Patent application scope: 1 · An anchoring system for structural reinforcements, comprising: (a) one structural element and one supporting element that are butted against each other, near the inner corner surface of the one piece, with the same a surface reinforcing medium composed of a structural reinforcement; (b) a cylindrical anchoring device that abuts against an inner corner of the surface of the structural member and the supporting member to be bonded; and (c) a solid A locking device is disposed along the axial length of the anchoring device and is configured to be slidably mounted to the anchoring device against the bonding surface. The anchoring system according to claim 1, wherein the surface strengthening medium is a surface reinforcing sheet, a surface reinforcing sheet, or a surface reinforcing shell. 3. The anchoring system of claim 1, wherein the structural reinforcement is made of a non-metal or metal. 4. The anchoring system of claim 1, wherein the structural reinforcement is fiber reinforced plastic (FRP) or steel. 5. The anchoring system of claim 1, wherein the cylindrical stiffening device is an anchoring tube or anchoring rod. 6. The anchoring system of claim 1, wherein the cylindrical sodium sputum device is a semi-circular anchoring tube or rod whereby the rounded edge of the tube or rod is abutted a point of contact between the structural element and the support element. 7. The system of claim 1, wherein the 18 1262232 structural component and the support component are perpendicular to each other. 8. The system of claim 4, wherein the solid lock is set by a plurality of tin bolts at 45. An angle is passed through the tinting device ‘installably pressed against the material device to abut the drilled surface 0 9 according to the scope of the patent application! The tinting system of the item wherein the structural element and the support element are non-perpendicular. 10. The anchoring system of claim 9, wherein the locking device passes through the plurality of anchoring bolts at an angle that bisects an angle between the structural component and the bonding surface of the supporting component. An anchoring device is slidably mounted to the misalignment device against the bonding surface. 11. The anchoring system of claim i, wherein the locking device is slidably mounted to the tinning device by a plurality of anchoring straps Said the surface. 12. An anchoring system for a structural reinforcement comprising: (〇-supporting element; (b) - a structural element that interfaces with the supporting element, near the inner corner surface of the structural element Forming a surface strengthening medium composed of structural reinforcement, and at the same time, one of the free ends of the reinforced structure reinforcement protrudes adjacent to the inner corner surface of the structural element; (c) a cylindrical anchoring device, contacting the ground Abutting the inner corner of the support member and the ablation surface of the structural member, wherein the free end of the surface-enhancing medium is ablated by the tinting device; (d) - a locking device, along The axial length direction of the tin fixing device is 19 1262232' for being slidably mounted on the anchoring device against the bonding surface. 13 · According to the scope of claim 12 An anchoring system, wherein the surface strengthening medium is a surface strengthening sheet, a surface strengthening, or a surface: a reinforcing shell. wherein, wherein, wherein the Bonding 14· According to the anchoring system described in claim 12, the structural reinforcement is made of non-metal or metal. 15. According to the anchoring system described in claim 12, the structural reinforcement is fiber reinforced plastic ( FRP) or steel. 16. The anchoring system according to the scope of claim 12, the cylindrical anchoring device is an anchoring tube or anchoring rod. 17. The anchor according to claim 12 The cylindrical system is a semi-circular anchoring tube or rod, with the rounded edge of the rod abutting against the structural element and the supporting surface. 18. The anchor according to claim 12 The anchoring system of claim 18, wherein the locking device is in accordance with claim 18, wherein the locking device is at 45 by a plurality of anchoring bolts. An angle through which the anchoring device can be slidably attached to the anchoring device against the bonding surface 0. 20. The anchoring system according to claim 12, wherein The structural elements and supporting elements are non-mutual The tin-fixing system according to claim 2, wherein the 20 1262232' locking device overlaps the structural member and the supporting member by a plurality of anchor bolts An angle of the angle passes through the anchoring device and is slidably mounted to the anchoring device against the bonding surface. 22. The anchoring system according to claim 12, Wherein the locking device is slidably mounted on the anchoring device against the bonding surface and the non-adhesive support surface by a plurality of anchoring straps. An anchoring system for a structural reinforcement comprising: - a (a) mutually curved curved structural element and a curved curved support element, adjacent to the inner corner surface of the element a surface-strengthening medium composed of a structural reinforcement; (b) a flexible or curved cylindrical anchoring device that is in contact with the structural element and the support element is subjected to a curved inner corner corner '; and (c) a locking device along the anchor The axial length direction to be pressed mounting means provided in the anchor and set it against the engagement surface of the drill. A tin-setting system for a structural reinforcement comprises: (a) a structural element and a supporting element that are butted against each other, adjacent to the inner corner surface of the structural element, bonded with a structural reinforcement The surface strengthens the medium while the first free end of the structural reinforcement protrudes adjacent the inner corner surface of the structural element, and the support element is bonded with a surface strengthening medium composed of the structural reinforcement, At the same time, the second free end of the structural reinforcement protrudes from the inner corner surface of the 21 1262232 adjacent to the binding element, and the first and second free ends of the structural reinforcement are mutually intersected (b) - the cylindrical shape is said to be , 疋 flat, contactively abutting the element and the yoke element are immersed in the inner side corner of the structural reinforcement; and P (c) a locking device, along The axial direction of the tin fixing device is set so as to be slidably placed on the bonding surface of the tin fixing device. Metatable % twenty two