Temporary fixing device suitable for T beam and capable of being rapidly disassembled and assembled and construction method

Abstract

The invention discloses a temporary fixing device suitable for a T-beam and capable of being rapidly disassembled and assembled and a construction method, and relates to the technical field of bridge construction. The temporary fixing device suitable for the T-beam and capable of being rapidly disassembled and assembled comprises a supporting structure, a connecting structure and a jack; the construction method comprises the following steps of surveying and setting out, pre-burying the steel strand, installing the temporary fixing device, installing the jack, tensioning the steel strand, fixing the steel strand, installing the sensor and disassembling the steel strand. The temporary fixing device suitable for the T-beam and capable of being rapidly disassembled and assembled and the construction method have the beneficial effects that the T-beam can be rapidly, easily and temporarily fixed, the stability condition can be monitored in real time, and the stability of the T-beam is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a quick-disassembly and assembly temporary fixing device suitable for T-beams and a construction method. Background Art

[0002] In bridge construction, T-beam bridges are also a common type of bridge. When assembling the prefabricated T-beam after casting, it is not conducive to the assembly of the bridge because its structure is prone to instability or even overturning. Therefore, it is very important to maintain the stability of the prefabricated T-beam on the pedestal during assembly. In traditional construction, wooden sticks or wooden squares are generally used to temporarily support the T-beam or welded steel pipes are used for temporary support. However, when wooden squares or wooden sticks are used for support, the wooden sticks or wooden squares are not firmly fixed and the strength is not enough, so the T-beam cannot be stabilized well, and the bridge is prone to instability and overturning. In addition, this method cannot monitor the stability of the T-beam in real time to prevent it from instability. Using welded steel pipes for temporary support is very troublesome to install, time-consuming and labor-intensive, and easily prolongs the construction period. It is also very inconvenient to disassemble. Similarly, it cannot monitor the stability of the T-beam in real time.

[0003] Therefore, it is necessary to develop a new type of T-beam temporary fixing device which can be more stable, easy to install and disassemble, and can monitor the stability of the T-beam. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art. The quick-disassembly temporary fixing device and construction method suitable for T-beams can quickly and easily temporarily fix the T-beams, and can monitor the stability in real time to ensure the stability of the T-beams.

[0005] The object of the present invention is achieved through the following technical solutions: a temporary fixing device suitable for T-beam that can be quickly disassembled and assembled, comprising a T-beam, a supporting device, a connecting structure, a pier bottom and a prestressed steel strand, the T-beam comprising a first crossbeam and a second crossbeam, and the first crossbeam and the second crossbeam are both provided with supporting devices, the pier bottom comprises a first pier bottom and a second pier bottom, and the first pier bottom and the second pier bottom are respectively provided with a first placement groove and a second placement groove, the T-beam is arranged on the pier bottom, the sides of the first placement groove and the second placement groove are both provided with sliding grooves, and the first placement groove and the second placement groove are respectively provided with sliding grooves. A blind hole thread is provided on the bottom of the placement groove, and a first prefabricated block and a second prefabricated block are respectively provided on the first placement groove and the second placement groove. The first prefabricated block and the second prefabricated block are slid onto the first placement groove and the second placement groove and fixed by bolts. Prefabricated holes are provided on the first crossbeam and the second crossbeam, and a supporting device is provided above the prefabricated holes. A jack is provided on the top of the supporting device. The prestressed steel strand passes through the jack, the supporting device and the T-beam in sequence, and one end is fixed on the bottom of the pier. The interior of the supporting device is provided with a vertical through hole.

[0006] In the quick-disassembly temporary fixing device suitable for T-beams of the present invention, a spring limiting device is provided inside the supporting device, the connecting structure is arranged inside the supporting device, the spring limiting device is located below the inside of the supporting device, and the connecting structure is arranged above the spring limiting device.

[0007] In the quick-disassembly temporary fixing device suitable for T-beams of the present invention, the spring limiting device also includes a trapezoidal buckle, the connecting structure is an inverted bowl-shaped structure, and the middle of the connecting structure includes a circular ring button that can move up and down and a limiting structure arranged at the bottom.

[0008] In the quick-disassembly temporary fixing device suitable for T-beams of the present invention, a strain gauge is attached to the middle of the prestressed steel strand, the spring limiting device includes a spring, and the trapezoidal buckle passes through the inside of the spring.

[0009] In the quick-disassembly temporary fixing device suitable for T-beams of the present invention, the upper and lower sides of the circular ring button are smooth inclined surfaces, and the connecting structure anchors the prestressed steel strands through anchors, and the surfaces of the connecting structure and the supporting device are provided with anti-rust layers and waterproof layers.

[0010] In the quick-detachable temporary fixing device applicable to T-beams of the present invention, an anti-skid pad is provided at the bottom of the supporting device.

[0011] The construction method of the quick-detachable temporary fixing device for T-beams of the present invention comprises the following steps: S11. Survey and set-out: according to the specific conditions on site, lay out the longitudinal axis on the top of the pier; S12, pre-embedded prestressed steel strands: embed the prestressed steel strands into the first prefabricated block and the second prefabricated block, and fix them with flanges; S13, installing a temporary fixing device: passing the prestressed steel strand through the pre-dug hole of the T-beam bridge and then through the middle hole of the connecting structure and anchoring it to the bowl-shaped structure on the upper part of the connecting structure with an anchor, then passing the connecting structure into the middle of the supporting device, passing the prestressed steel strand through the supporting device, and placing the supporting device firmly on the upper part of the T-beam; S14, installing the jack: passing the prestressed steel strand through the jack and placing the jack on the upper part of the supporting device; S15. Tensioning steel strands: Start the jack to apply appropriate tension to the prestressed steel strands: S16, fixing the steel strand: making the trapezoidal buckle in the supporting device successfully stuck in the lower part of the bowl-shaped structure in the connecting structure; S17. Finally, the strain gauge connected to the sensor is attached to the middle of the prestressed steel strand to monitor the stress of the steel strands on both sides of the T-beam in real time. When the stress difference between the steel strands on both sides is large, it indicates that the T-beam is unstable and the stress of the prestressed steel strand should be adjusted in time. Disassembly steps: Start the jack to apply a greater pulling force to the prestressed steel strand, so that the trapezoidal buckle in the support device can successfully slide down to the lower part of the circular ring button, and then unload the force by the jack so that the trapezoidal buckle can successfully slide out of the connecting structure through the circular ring button, that is, the connecting structure and the supporting device are successfully separated, and then remove the anchor and take off the connecting structure to complete the disassembly steps.

[0012] The present invention has the following advantages: The present invention comprises a T-beam, a supporting device, a connecting structure, a pier bottom and a prestressed steel strand, the T-beam comprises a first crossbeam and a second crossbeam, and the first crossbeam and the second crossbeam are both provided with supporting devices, the pier bottom comprises a first pier bottom and a second pier bottom, and the first pier bottom and the second pier bottom are respectively provided with a first placement groove and a second placement groove, the T-beam is arranged on the pier bottom, the sides of the first placement groove and the second placement groove are both provided with sliding grooves, and the bottoms of the first placement groove and the second placement groove are both provided with blind hole threads, the first placement groove and the second placement groove are respectively provided with a first prefabricated block and a second prefabricated block, the first prefabricated block and the second prefabricated block are slid to the first placement groove and the second placement groove, and are fixed by bolts, the first crossbeam and the second crossbeam are provided with prefabricated holes, the top of the prefabricated holes is provided with a supporting device, the top of the supporting device is provided with a jack, the prestressed steel strand passes through the jack, the supporting device and the T-beam in turn, and one end is fixed to the pier bottom, the interior of the supporting device is provided with a vertical through hole, and the supporting device is convenient for storage and transportation. It is also suitable for T-beams of different heights and can be reused many times, eliminating the use of wood and being more environmentally friendly.

[0013] The invention is convenient to install and disassemble, saves time in installation and disassembly, and can shorten the construction period.

[0014] The present invention monitors the stability of the T-beam in real time, making the stability of the T-beam digital and precise, and the operation is simple and more popular. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the supporting device in the present invention; Figure 3 It is a structural schematic diagram of the first placement slot in the present invention; Figure 4 It is a schematic diagram of the partial structure of the inner wall of the supporting device in the invention; Figure 5 for Figure 1 A local enlarged schematic diagram of the middle A; Figure 6 for Figure 1 A local enlarged schematic diagram of point B in the middle.

[0016] In the figure, T-beam 1, supporting device 2, connecting structure 3, pier bottom 4, prestressed steel strand 5, first cross beam 6, second cross beam 7, first pier bottom 8, second pier bottom 9, first placement groove 10, second placement groove 11, sliding groove 12, blind hole thread 13, first prefabricated block 14, second prefabricated block 15, prefabricated hole 16, jack 17, spring limit device 18, trapezoidal buckle 19, circular ring button 20, limit structure 21, strain gauge 22, spring 23, through hole 24. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings, and the protection scope of the present invention is not limited to the following: like Figure 1 to Figure 6As shown, a temporary fixing device suitable for T-beam that can be quickly disassembled and assembled includes a T-beam 1, a supporting device 2, a connecting structure 3, a pier bottom 4 and a prestressed steel strand 5, the connecting structure 3 is used to connect the prestressed steel strand 5, the T-beam 1 includes a first crossbeam 6 and a second crossbeam 7, and the first crossbeam 6 and the second crossbeam 7 are both provided with a supporting device 2, the pier bottom includes a first pier bottom 8 and a second pier bottom 9, and the first pier bottom 8 and the second pier bottom 9 are respectively provided with a first placement groove 10 and a second placement groove 11, the T-beam 1 is arranged on the pier bottom 4, the side surfaces of the first placement groove 10 and the second placement groove 11 are both provided with a sliding groove 12, and the bottoms of the first placement groove 10 and the second placement groove 11 are both provided with a blind hole thread 13, The first placement groove 10 and the second placement groove 11 are respectively provided with a first prefabricated block 14 and a second prefabricated block 15, so as to facilitate the replacement and removal of the prestressed steel strand 5. The first prefabricated block 14 and the second prefabricated block 15 are slid onto the first placement groove 10 and the second placement groove 11 and are fixed by bolts. Prefabricated holes 16 are provided on the first cross beam 6 and the second cross beam 7. Above the prefabricated holes 16 is a supporting device 2. A jack 17 is provided on the top of the supporting device 2. The jack 17 is mainly used for tensioning the prestressed steel strand 5. The prestressed steel strand 5 passes through the jack 17, the supporting device 2 and the T-beam 1 in sequence, and one end is fixed on the pier bottom 4. The interior of the supporting device 2 is provided with a vertical through hole.

[0018] In this embodiment, a spring limiter 18 is provided inside the support device 2, the connecting structure 3 is arranged inside the support device 2, the spring limiter 18 is located at the bottom inside the support device 2, and the connecting structure 3 is arranged above the spring limiter 18.

[0019] In this embodiment, the spring limiting device 18 also includes a trapezoidal buckle 19, the connecting structure 3 is an inverted bowl-shaped structure, and the connecting structure 3 has a circular ring button 20 that can move up and down in the middle and a limiting structure 21 arranged at the bottom.

[0020] In this embodiment, a strain gauge 22 is attached to the middle of the prestressed steel strand 5 for monitoring the magnitude of the force applied to the prestressed steel strand 5 . The spring limit device 18 includes a spring 23 , and the trapezoidal buckle 19 passes through the inside of the spring 23 .

[0021] In this embodiment, both the upper and lower sides of the circular ring button 20 are smooth inclined surfaces, and the connection structure 3 anchors the prestressed steel strand 5 through an anchor. The surfaces of the connection structure 3 and the supporting device 2 are provided with an anti-rust layer and a waterproof layer, which prolongs the practical life.

[0022] In this embodiment, an anti-slip pad is provided at the bottom of the supporting device 2 .

[0023] In this embodiment, a plurality of through holes 24 are provided on the side wall of the supporting device 2 , and a plurality of through holes 24 are provided, and limiting rods may be provided on two opposite through holes 24 .

[0024] In this embodiment, the construction method of the quick-disassembly temporary fixing device for T-beams includes the following steps: S11. Survey and set-out: according to the specific conditions on site, lay out the longitudinal axis on the top of the pier; S12, pre-embedding the prestressed steel strand 5: embedding the prestressed steel strand 5 into the first prefabricated block 14 and the second prefabricated block 15, and fixing them with flanges; S13, installing a temporary fixing device: passing the prestressed steel strand 5 through the pre-dug hole of the T-beam 1 bridge and then through the middle hole of the connecting structure 3 and anchoring it to the bowl-shaped structure on the upper part of the connecting structure 3 with an anchor, then passing the connecting structure 3 into the middle of the supporting device 2, passing the prestressed steel strand 5 through the supporting device 2, and placing the supporting device 2 firmly on the upper part of the T-beam 1; S14, installing the jack 17: passing the prestressed steel strand 5 through the jack 17 and placing the jack 17 on the upper part of the supporting device 2; S15, tensioning steel strands: start the jack to apply appropriate tension to the prestressed steel strands 5: S16, fixing the steel strand: making the trapezoidal buckle 19 in the supporting device 2 successfully stuck in the lower part of the bowl-shaped structure in the connecting structure 3; S17, finally, the strain gauge 22 connected to the sensor is attached to the middle of the prestressed steel strand 5, which is used to monitor the force of the steel strands on both sides of the T beam 1 in real time. When the force difference between the steel strands on both sides is large, it means that the T beam 1 is unstable, and the force of the prestressed steel strand 5 should be adjusted in time; Disassembly steps: Start the jack 17 to apply a greater pulling force to the prestressed steel strand 5, so that the trapezoidal buckle 19 in the supporting device 2 can successfully slide down to the lower part of the circular ring button 20, and then the jack 17 can unload the force so that the trapezoidal buckle 19 can successfully slide out of the connecting structure 3 through the circular ring button 20, that is, the connecting structure 3 and the supporting device 2 are successfully separated, and then the anchor is removed to remove the connecting structure 3 to complete the disassembly steps.

[0025] Finally, it should be noted that the above description 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 replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A quick-disassembly temporary fixing device suitable for T-beams, characterized by: The invention comprises a T-beam, a supporting device, a connecting structure, a pier bottom and a prestressed steel strand, wherein the T-beam comprises a first crossbeam and a second crossbeam, and the first crossbeam and the second crossbeam are both provided with supporting devices, the pier bottom comprises a first pier bottom and a second pier bottom, and the first pier bottom and the second pier bottom are respectively provided with a first placement groove and a second placement groove, the T-beam is arranged on the pier bottom, the sides of the first placement groove and the second placement groove are both provided with sliding grooves, and the bottoms of the first placement groove and the second placement groove are both provided with blind hole threads, the first placement groove and the second placement groove are respectively provided with a first prefabricated block and a second prefabricated block, the first prefabricated block and the second prefabricated block are slid onto the first placement groove and the second placement groove and fixed by bolts, the first crossbeam and the second crossbeam are provided with prefabricated holes, the top of the prefabricated holes is provided with a supporting device, the top of the supporting device is provided with a jack, the prestressed steel strand passes through the jack, the supporting device and the T-beam in sequence, and one end is fixed on the pier bottom, and the interior of the supporting device is provided with a vertical through hole.

2. A quick-detachable temporary fixing device for T-beams according to claim 1, characterized in that: A spring limiting device is arranged inside the supporting device, the connecting structure is arranged inside the supporting device, the spring limiting device is located below the inside of the supporting device, and the connecting structure is arranged above the spring limiting device.

3. The quick-detachable temporary fixing device for T-beams according to claim 2 is characterized in that: The spring limiting device also includes a trapezoidal buckle, the connecting structure is an inverted bowl-shaped structure, and the middle of the connecting structure has a circular ring button that can move up and down and a limiting structure arranged at the bottom.

4. The quick-detachable temporary fixing device for T-beams according to claim 1, characterized in that: A strain gauge is attached to the middle part of the prestressed steel strand, the spring limiting device comprises a spring, and the trapezoidal buckle passes through the inside of the spring.

5. The quick-detachable temporary fixing device for T-beams according to claim 3 is characterized in that: The upper and lower sides of the circular ring button are both smooth inclined surfaces, and the connection structure anchors the prestressed steel strands through anchors. The surfaces of the connection structure and the supporting device are provided with anti-rust layers and waterproof layers.

6. The quick-detachable temporary fixing device for T-beams according to claim 1, characterized in that: An anti-skid pad is provided at the bottom of the supporting device.

7. A construction method for a quick-detachable temporary fixing device for a T-beam according to any one of claims 1 to 6, characterized in that: The following steps are involved: S11. Survey and set-out: according to the specific conditions on site, lay out the longitudinal axis on the pier top; S12, pre-embedded prestressed steel strands: embed the prestressed steel strands into the first prefabricated block and the second prefabricated block, and fix them with flanges; S13, installing a temporary fixing device: passing the prestressed steel strand through the pre-dug hole of the T-beam bridge and then through the middle hole of the connecting structure and anchoring it to the bowl-shaped structure on the upper part of the connecting structure with an anchor, then passing the connecting structure into the middle of the supporting device, passing the prestressed steel strand through the supporting device, and placing the supporting device firmly on the upper part of the T-beam; S14, installing the jack: passing the prestressed steel strand through the jack and placing the jack on the upper part of the supporting device; S15. Tensioning steel strands: Start the jack to apply appropriate tension to the prestressed steel strands: S16, fixing the steel strand: making the trapezoidal buckle in the supporting device successfully stuck in the lower part of the bowl-shaped structure in the connecting structure; S17. Finally, the strain gauge connected to the sensor is attached to the middle of the prestressed steel strand to monitor the stress of the steel strands on both sides of the T-beam in real time. When the stress difference between the steel strands on both sides is large, it indicates that the T-beam is unstable and the stress of the prestressed steel strand should be adjusted in time. Disassembly steps: Start the jack to apply a greater pulling force to the prestressed steel strand, so that the trapezoidal buckle in the support device can successfully slide down to the lower part of the circular ring button, and then unload the force by the jack so that the trapezoidal buckle can successfully slide out of the connecting structure through the circular ring button, that is, the connecting structure and the supporting device are successfully separated, and then remove the anchor and take off the connecting structure to complete the disassembly steps.

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