Prestressed anchoring device for concrete bridge

Abstract

The utility model belongs to the technical field of concrete bridges, and particularly relates to a prestressed anchoring device for a concrete bridge, which comprises a bottom table, a tension actuating mechanism is arranged above the bottom table, and an anchoring fixing mechanism is arranged above the tension actuating mechanism. The supporting strength is effectively and reliably improved through the arranged anchoring and fixing mechanism, the bridge table is supported and fastened through the arranged bearing tensioning tables installed on the front side and the rear side of the lower portion of the bridge table and the arranged reinforcing corner connectors installed on the two sides of the bridge table, and the connecting tables installed on the two sides of the bearing tensioning tables are arranged on the connecting table. The bearing tensioning table and the bridge table are tensioned and anchored through cooperation of the anchoring rod assembly and the locking nut at one end, the reliable connection effect is guaranteed, the anchoring rod assembly has high supporting strength and is stable and reliable in performance, and the bearing tensioning table and the bridge table are tensioned and anchored through cooperation of the anchoring rod assembly and the locking nut at one end of the anchoring rod assembly. The service life is prolonged to a certain extent, the installation is quick and convenient, and the anti-seismic buffering capability is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of concrete bridges, and in particular relates to a prestressed anchoring device for concrete bridges. Background Art

[0002] Bridges generally refer to those built over rivers, lakes and seas. After long-term use, bridges will develop cracks due to external factors and high-intensity use. The gaps are anchored using prestressed anchoring methods. One end of the steel bar (or steel cable) is fixed in the stable rock and soil at the bottom of the hole, and the steel bar (or steel cable) is tightened to generate a certain rebound force (i.e. prestress). The other end of the steel bar (cable) is then fixed to the surface of the rock and soil or retaining structure, and the resilience of the steel bar is used to compact the rock and soil or retaining structure that may slide, so as to increase the shear strength on the sliding surface.

[0003] After searching, the Chinese utility model patent application document with Chinese patent authorization announcement number CN219862388U discloses a prestressed anchor device for concrete bridges, including a prestressed anchor body. First, the prestressed anchor body is placed stably and the embedded base at the bottom is fixed. Then, two beams are inserted into two beam mounting grooves in turn, and the beams are fixed by two locking columns. Then, two reinforcing studs are used to pass one end of the studs through the locking base and connect with the support groove. The hard spring at the bottom can play a certain buffering capacity when the beam is subjected to force and vibration. The presence of the moisture-proof sleeve can make the bottom of the prestressed anchor body have moisture-proof and corrosion-resistant properties.

[0004] With respect to the above-mentioned related technologies, the reinforcing studs provided in the device and the prestressed anchor body cannot be effectively and reliably connected, and the supporting strength is insufficient, so it is urgent to design a prestressed anchor device for concrete bridges to deal with these problems. Utility Model Content

[0005] Aiming at the deficiencies of the prior art, the utility model discloses a prestressed anchoring device for a concrete bridge.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] A prestressed anchoring device for a concrete bridge comprises a base, a tensioning actuator is arranged above the base, and an anchoring and fixing mechanism is arranged above the tensioning actuator.

[0008] The anchoring and fixing mechanism includes a bridge platform arranged above the tensioning actuator, a load-bearing tensioning platform is installed on the front and rear sides below the bridge platform, reinforcing angle code pieces are installed on both sides of the bridge platform, connecting platforms are arranged on both sides of the load-bearing tensioning platform, a fastening screw is installed on the inner side of the connecting platform, an anchoring platform is installed on the outer surface of the fastening screw, an anchoring rod assembly is arranged on one side of the anchoring platform, a locking nut is installed on one end of the anchoring rod assembly, and a limiting platform is arranged on one side of the anchoring rod assembly.

[0009] Preferably, the tensioning actuator includes an embedded base arranged above the base, a prestressed anchor body is installed above the embedded base, a first support is installed above the embedded base, a lifting platform is arranged above the first support, an upper support is installed above the lifting platform, second supports are installed on both sides of the prestressed anchor body, and carbon fiber cloth is arranged between the upper support and the second support.

[0010] Preferably, the anchor rod assembly comprises an anchor plate arranged at one side of the anchoring platform, an anchor telescopic pull rod is arranged at one side of the anchor plate, and a damping spring is installed between the anchor telescopic pull rod and the anchor plate.

[0011] Preferably, the anchor rod assembly is connected to the locking nut via threads.

[0012] Preferably, a limited pressure axis is provided on the opposite surface of the second support.

[0013] Preferably, a lifting hydraulic cylinder is arranged between the first support and the lifting platform.

[0014] The beneficial effects are:

[0015] The utility model discloses a prestressed anchoring device for concrete bridges, which increases the supporting strength through an anchoring and fixing mechanism that is set up, and supports and fixes the bridge platform through a load-bearing and tensioning platform installed on the front and rear sides below the bridge platform and reinforcing angle code pieces installed on both sides of the bridge platform, and tightens and fixes the anchor rod assembly through connecting platforms installed on both sides of the load-bearing and tensioning platform and fastening screws installed on the inner side of the connecting platform and the anchoring platform, and tightens and fixes the anchor rod assembly, and tightens and anchors the load-bearing and tensioning platform and the bridge platform through the cooperation of the anchor rod assembly and the locking nut at one end, thereby ensuring a reliable connection effect, and the anchor rod assembly has a high supporting strength, stable and reliable performance, and its service life is increased to a certain extent, and the installation is quick and convenient, saving time and effort, and having excellent anti-seismic and buffering capabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the shaft side structure of the utility model;

[0017] Figure 2 It is a front view structural schematic diagram of the utility model;

[0018] Figure 3 It is a first structural schematic diagram of the utility model;

[0019] Figure 4 yes Figure 3 The structural diagram at A in the middle;

[0020] Figure 5 It is a structural schematic diagram of the anchor rod assembly of the utility model.

[0021] In the figure: 1. base;

[0022] 2. Tension actuator; 201. Embedded base; 202. Prestressed anchor body; 203. First support; 204. Lifting hydraulic cylinder; 205. Lifting platform; 206. Upper support platform; 207. Second support; 2071. Position-limiting pressure shaft; 208. Carbon fiber cloth;

[0023] 3. Anchoring and fixing mechanism; 301. Load-bearing tensioning platform; 302. Bridge platform; 303. Reinforced corner piece; 304. Connecting platform; 305. Fastening screw; 306. Anchoring platform; 307. Anchoring rod assembly; 3071. Anchoring plate; 3072. Damping spring; 3073. Anchoring telescopic pull rod; 308. Locking nut; 309. Limiting platform. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention; the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Reference Figure 1-5 The utility model provides an embodiment: a prestressed anchoring device for a concrete bridge, comprising a base 1, a tensioning actuator 2 is arranged above the base 1, and an anchoring and fixing mechanism 3 is arranged above the tensioning actuator 2.

[0028] In this embodiment: the tension actuator 2 includes an embedded base 201 arranged above the base 1, a prestressed anchor body 202 is installed above the embedded base 201, a first support 203 is installed above the embedded base 201, a lifting platform 205 is arranged above the first support 203, an upper support 206 is installed above the lifting platform 205, second supports 207 are installed on both sides of the prestressed anchor body 202, and a carbon fiber cloth 208 is arranged between the upper support 206 and the second support 207. The carbon fiber cloth 208 is used to tighten the upper support 206 and the second support 207. A limited pressure shaft 2071 is arranged on the opposite surface of the second support 207. The limited pressure shaft 2071 is movably and rotatably connected to the second support 207. A lifting hydraulic cylinder 204 is arranged between the first support 203 and the lifting platform 205. The lifting hydraulic cylinder 204 is used to tighten the carbon fiber cloth 208.

[0029] In this embodiment: the anchoring and fixing mechanism 3 includes a bridge platform 302 arranged above the tensioning actuator 2, a load-bearing tensioning platform 301 is installed at the front and rear sides below the bridge platform 302, and reinforcing corner code pieces 303 are installed at both sides of the bridge platform 302, and the reinforcing corner code pieces 303 are used to increase the fixing strength. Connecting platforms 304 are arranged at both sides of the load-bearing tensioning platform 301, a fastening screw 305 is installed at the inner side of the connecting platform 304, an anchoring platform 306 is installed at the outer surface of the fastening screw 305, an anchoring rod assembly 307 is arranged at one side of the anchoring platform 306, a locking nut 308 is installed at one end of the anchoring rod assembly 307, and a limiting platform 309 is arranged at one side of the anchoring rod assembly 307. The anchoring rod assembly 307 includes an anchoring plate 3071 arranged at one side of the anchoring plate 3071, an anchoring telescopic pull rod 3073 is arranged at one side of the anchoring plate 3071, and a damping spring 3072 is installed between the anchoring telescopic pull rod 3073 and the anchoring plate 3071. The anchor rod assembly 307 is threadedly connected to the locking nut 308. The anchor rod assembly 307 is used to perform prestressed anchoring on the bridge abutment 302, the load-bearing tensioning platform 301 and the prestressed anchor body 202.

[0030] Working principle: When in use, first place the prestressed anchor body 202 steadily, fix the embedded base 201 at the bottom, place the carbon fiber cloth 208 on the outer surface of the limit pressure shaft 2071 on the inner side of the upper support 206 and the second support 207, start the lifting hydraulic cylinder 204, drive the lifting platform 205 to rise to a certain angle, so that the carbon fiber cloth 208 is away from one side of the prestressed anchor body 202, stretch the carbon fiber cloth 208, ensure that the carbon fiber cloth 208 is kept in the prestressed state of the set value, so as to exert the maximum strength effect; the fastening screw 305 arranged on the inner side of the connecting platform 304, The anchoring platform 306 arranged on one side of the fastening screw 305 is fixed, and at the same time, the anchoring rod assembly 307 connected to one side of the anchoring platform 306 is obliquely set on one side of the bridge platform 302, and passes through the limit platform 309, and is connected by the locking nut 308. Since a damping spring 3072 is arranged inside the anchoring rod assembly 307, when the bridge platform 302 is subjected to force and vibrates, it has a certain buffering capacity. The prestressed anchoring device for concrete bridges has a high supporting strength, stable and reliable performance, and excellent seismic buffering capacity. It has a high supporting strength, stable and reliable performance, and excellent seismic buffering capacity.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A prestressed anchoring device for a concrete bridge, characterized in that: It comprises a base, a tensioning actuator is arranged above the base, and an anchoring and fixing mechanism is arranged above the tensioning actuator; The anchoring and fixing mechanism includes a bridge platform arranged above the tensioning actuator, a load-bearing tensioning platform is installed on the front and rear sides below the bridge platform, reinforcing angle code pieces are installed on both sides of the bridge platform, connecting platforms are arranged on both sides of the load-bearing tensioning platform, a fastening screw is installed on the inner side of the connecting platform, an anchoring platform is installed on the outer surface of the fastening screw, an anchoring rod assembly is arranged on one side of the anchoring platform, a locking nut is installed on one end of the anchoring rod assembly, and a limiting platform is arranged on one side of the anchoring rod assembly.

2. A prestressed anchoring device for a concrete bridge according to claim 1, characterized in that: The tensioning actuator includes an embedded base arranged above the base, a prestressed anchor body is installed above the embedded base, a first support is installed above the embedded base, a lifting platform is arranged above the first support, an upper support is installed above the lifting platform, second supports are installed on both sides of the prestressed anchor body, and carbon fiber cloth is arranged between the upper support and the second support.

3. A prestressed anchoring device for a concrete bridge according to claim 1, characterized in that: The anchor rod assembly comprises an anchor plate arranged at one side of the anchoring platform, an anchor telescopic pull rod is arranged at one side of the anchor plate, and a damping spring is installed between the anchor telescopic pull rod and the anchor plate.

4. A prestressed anchoring device for a concrete bridge according to claim 1, characterized in that: The anchor rod assembly is connected to the locking nut via threads.

5. A prestressed anchoring device for a concrete bridge according to claim 2, characterized in that: The opposite surface of the second support is provided with a limited pressure axis.

6. A prestressed anchoring device for a concrete bridge according to claim 2, characterized in that: A lifting hydraulic cylinder is arranged between the first support and the lifting platform.

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