Method of construction of a self-supporting bridge

Abstract

This application discloses a method for constructing an unsupported bridge, comprising the following steps: Step 1: Using a gantry crane, a first bridge segment is suspended and assembled to predetermined positions on both sides of adjacent piers; Step 2: A second bridge segment is suspended and assembled to the side of the first bridge segment away from the pier; Step 3: Using a gantry crane, a third bridge segment is lifted to a predetermined position between two adjacent piers, so that both ends of the third bridge segment are respectively joined with the ends of the second bridge segment, thereby completing the assembly of the bridge between adjacent piers; Step 4: The assembly of bridge segments between other adjacent piers is performed by repeating steps 1 to 3. In use, this application can reduce the need for support frame construction, lower costs, and improve bridge construction efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of bridge construction, in particular to a method for constructing a bridge without support. BACKGROUND

[0002] Bridges provide great convenience for people's travel and are common buildings in daily life. With the development of assembly technology, many bridges are usually pre-cast in segments according to the designed size during construction, and then the segments are spliced together to form a bridge by using equipment.

[0003] At present, in the process of splicing the bridge segments, in order to ensure the stability of the splicing of the bridge segments, a support frame is often set up at the construction site to support the bridge segments, the bridge segments are hoisted to the support frame, the two bridge segments are made close to each other, and then the two bridge segments are connected and spliced.

[0004] According to the current technical situation, the inventor believes that the method of setting up a support frame to support the bridge segments is time-consuming and labor-intensive, which affects the construction efficiency, and further improvement is needed. SUMMARY

[0005] The purpose of the present application is to provide a method for constructing a bridge without support, which can reduce the construction of support frames, reduce costs and improve the construction efficiency of the bridge.

[0006] The present application provides a method for constructing a bridge without support, which adopts the following technical solution:

[0007] A method for constructing a bridge without support, comprising the following steps:

[0008] Step 1: using a gantry crane to suspend and splice the first bridge segment to the predetermined position on both sides of the adjacent pier;

[0009] Step 2: suspend and splice the second bridge segment to the side of the first bridge segment away from the pier;

[0010] Step 3: using a gantry crane to hoist the third bridge segment to the predetermined position between the two adjacent piers, so that the two ends of the third bridge segment are respectively folded with the end of the second bridge segment, to complete the splicing of the bridge between the adjacent piers;

[0011] Step 4: the splicing of the bridge segments between other adjacent piers can be repeated by the method of steps 1 to 3.

[0012] By adopting the above technical solution, the bridge segment is hoisted by using a gantry crane, which is obviously more time-saving and labor-saving compared with the traditional method of setting up a support frame. Moreover, the gantry crane can well control the position of the bridge segment according to the actual situation, which is more convenient to operate. Not only can the cost be reduced, but also the construction efficiency can be effectively improved.

[0013] The application further provides that: before the piers and the first bridge section, the first bridge section and the second bridge section, and the second bridge section and the third bridge section are suspended and assembled, the end portions of the first bridge section, the second bridge section and the third bridge section are polished and leveled by using the leveling device.

[0014] By adopting the above technical scheme, the end portions of the bridge sections are polished by using the leveling device, so that the end portions of the bridge sections are more leveled, the gaps after the bridge sections are assembled are effectively reduced, and the connection strength between the bridge sections is increased.

[0015] The application further provides that: the leveling device comprises: a mounting frame mounted on a moving seat; a sliding seat slidingly mounted on the mounting frame in a vertical direction; a lifting assembly arranged on the moving seat and used for driving the sliding seat to lift; a mounting plate arranged on the sliding seat; a polishing assembly arranged on the mounting plate and used for polishing; and a cleaning assembly arranged on the mounting plate and used for cleaning the powder and debris generated during polishing.

[0016] By adopting the above technical scheme, when the end portions of the bridge sections need to be leveled, the moving seat can be moved to a predetermined position, the lifting assembly is started to drive the sliding seat to slide to a required height, and then the polishing assembly is started to polish the outer side of the end portions of the bridge sections. The cleaning assembly arranged can clean the powder and debris generated during polishing, thereby reducing the influence of pollutants on the surrounding environment and workers.

[0017] The application further provides that: the polishing assembly comprises: a rotating shaft vertically mounted on the mounting plate; a polishing cutter wheel mounted on the rotating shaft; and a driving member mounted on the mounting plate and used for driving the rotating shaft to rotate.

[0018] By adopting the above technical scheme, when the driving member is started, the rotating shaft can be driven to rotate, and the polishing cutter wheel can be driven to rotate during the rotation of the rotating shaft, so that the polishing cutter wheel polishes the end portions of the bridge sections.

[0019] The application further provides that: the cleaning assembly comprises: an annular recessed plate arranged on a side of the mounting plate away from the sliding seat and surrounding the rotating shaft; a material falling port arranged on a bottom wall of the annular recessed plate; a collecting box detachably mounted on the mounting plate; and a material discharge pipeline mounted on the bottom of the annular recessed plate and used for connecting the material falling port and the collecting box.

[0020] By adopting the above technical scheme, when the polishing assembly polishes the bridge sections, the annular recessed plate arranged can limit the powder and debris generated, so that the debris and powder enter the collecting box from the material falling port along the inner wall of the annular recessed plate. The whole process is environmentally friendly and can reduce noise.

[0021] The application further provides that: the outer side of the annular concave plate is provided with relatively symmetrical arc-shaped notches, the annular concave plate is internally provided with a rod body rotating sleeve, a brush roller in contact with the inner wall of the annular concave plate, and a moving rod extending out of the arc-shaped notches, and the outer side of the mounting plate is provided with a driving assembly for driving the moving rod to slide along the arc-shaped notches.

[0022] By adopting the above technical scheme, when the driving assembly is turned on, the moving rod can be driven to slide along the arc-shaped notches, and in the moving process, the brush roller can sweep the dust and debris adhered to the inner wall of the annular concave plate to the discharge port, so that the annular concave plate can be further cleaned.

[0023] The application further provides that: the driving assembly comprises: a servo motor mounted on the outer side of the mounting plate; and an extension rod having one end fixed on the output end of the servo motor and the other end rotatably connected to the outer end of the moving rod.

[0024] By adopting the above technical scheme, when the moving rod needs to be driven to move, the servo motor can be turned on to drive the extension rod to rotate, and the extension rod can conveniently drive the moving rod to slide when rotating. This structure design is ingenious and has obvious effect.

[0025] The application further provides that: a plurality of adsorption holes are formed in the horizontal direction on both sides of the annular concave plate, the adsorption holes are connected with dust removal hoses, and the dust removal hoses are connected with a dust collection device.

[0026] By adopting the above technical scheme, when the dust collection device is turned on, the dust in the annular concave plate can be adsorbed and removed through the dust removal hoses for centralized treatment. The dust collection device and the collection box cooperate with each other to better clean the dust and debris in the annular concave plate.

[0027] The application further provides that: a ring-shaped groove is formed on the side of the annular concave plate away from the mounting plate, a ring-shaped strip is movably accommodated in the ring-shaped groove, and a compression spring is arranged between the ring-shaped strip and the inner wall of the ring-shaped groove.

[0028] By adopting the above technical scheme, in the process that the annular concave plate abuts against the outer side of the bridge section, the compression spring can drive the ring-shaped strip to slide in the ring-shaped groove by using the elastic force of the compression spring, so as to guarantee the sealing effect between the bridge section and the annular concave plate, and also play the roles of noise reduction and buffering.

[0029] The application further provides that: a plurality of knocking assemblies for knocking the annular concave plate are arranged on the outer circumferential side of the mounting plate.

[0030] By adopting the above technical scheme, the knocking assemblies can knock the outer side of the annular concave plate on the basis of the cleaning assembly when in use, so that the dust and debris are quickly separated from the inner wall of the annular concave plate, thereby guaranteeing the cleanliness of the inside of the annular concave plate.

[0031] In summary, the present application includes at least one of the following beneficial technical effects:

[0032] By adopting the gantry crane mode to hoist the bridge section, compared with the traditional method of building a support frame, it is obviously more time-saving and labor-saving, and the gantry crane can well control the position of the bridge section according to the actual situation, which is more convenient to operate, not only can reduce the cost, but also can effectively improve the construction efficiency;

[0033] By setting the leveling device, the end of the bridge section can be polished by the leveling device, so that the end of the bridge section is more flat, effectively reducing the gap after the bridge section is spliced, which is beneficial to increase the connection strength between the bridge sections. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;

[0035] Figure 2 is a schematic diagram of the structure of the annular recessed plate in the embodiment of the present application.

[0036] Explanation of reference numerals: 1, moving seat; 10, mounting frame; 2, sliding seat; 3, mounting plate; 31, rotating shaft; 32, polishing knife wheel; 4, annular recessed plate; 40, arc-shaped notch; 41, blanking port; 42, collection box; 43, discharging pipeline; 44, brush roller; 45, moving rod; 46, servo motor; 47, telescopic rod; 48, dust removal hose; 49, annular strip; 5, knocking rod; 51, water delivery pipe; 52, spray head. DETAILED DESCRIPTION

[0037] The present application will be further described in detail below with reference to the accompanying drawings.

[0038] The embodiment of the present application discloses a construction method of a bridge without support, as shown in Figure 1 and Figure 2 , comprising the following steps:

[0039] Step one: using a gantry crane to suspend and splice the first bridge section to the predetermined position on both sides of the adjacent pier;

[0040] Step two: suspend and splice the second bridge section to the side of the first bridge section away from the pier;

[0041] Step three: use the gantry crane to hoist the third bridge section to the predetermined position between the adjacent two piers, so that the two ends of the third bridge section are respectively folded with the end of the second bridge section, to complete the splicing of the bridge between the adjacent piers;

[0042] Step four: the bridge section splicing between other adjacent piers can be repeated by the method in steps one to three.

[0043] In this embodiment, in order to ensure the firmness of the installation between the bridge sections, before the piers and the first bridge section, the first bridge section and the second bridge section, and the second bridge section and the third bridge section are suspended and assembled, the end portions of the first bridge section, the second bridge section and the third bridge section need to be polished and leveled by using the leveling device.

[0044] The leveling device comprises a moving seat 1, universal wheels are installed on the bottom of the moving seat 1, an installation rack 10 is vertically installed on the bearing surface of the moving seat 1, a sliding seat 2 is slidably installed on the installation rack 10 in the vertical direction, a lifting assembly is installed on the moving seat 1, the lifting assembly is used to drive the sliding seat 2 to lift and fall, in order to polish the outer side of the bridge section, so that the end portion of the bridge section is relatively flat and convenient for firm assembly, an installation plate 3 is installed on the sliding seat 2, and a polishing assembly is arranged on the installation plate 3.

[0045] In this embodiment, the polishing assembly comprises a rotating shaft 31 installed on the installation plate 3, the rotating shaft 31 is perpendicular to the installation plate 3, a polishing cutter wheel 32 is installed on the outer side of one end of the rotating shaft 31 away from the sliding seat 2, and a driving piece is further installed on the installation plate 3, which is used to drive the rotating shaft 31 to rotate.

[0046] When it is necessary to polish the outer side of the end portion of the bridge section, the moving seat 1 can be moved to a predetermined position, and then the lifting assembly is started to drive the sliding seat 2 to slide to a predetermined position. At this time, the driving piece can be started to drive the rotating shaft 31 to rotate, so that the polishing cutter wheel 32 can polish the outer side of the bridge section to level the bridge section.

[0047] Considering that dust and scattered debris are easily generated in the actual polishing process of the polishing assembly, in this embodiment, a cleaning assembly is further arranged on the installation plate 3, which can clean the dust and debris generated by the polishing assembly when polishing the outer side of the bridge section.

[0048] The cleaning assembly comprises a ring-shaped recessed plate 4 arranged on the side of the installation plate 3 away from the sliding seat 2, the ring-shaped recessed plate 4 surrounds the circumferential side of the rotating shaft 31, a discharging port 41 is arranged on the bottom wall of the ring-shaped recessed plate 4, a collecting box 42 is detachably installed on the installation plate 3, the collecting box 42 can be fixed on the installation plate 3 by magnetic attraction or suspension, a discharging pipeline 43 is installed on the bottom of the ring-shaped recessed plate 4, one end of the discharging pipeline 43 is connected with the collecting box 42, and the other end is in communication with the discharging port 41 of the ring-shaped recessed plate 4.

[0049] When the polishing assembly is polishing, the ring-shaped recessed plate 4 arranged can cover the polishing assembly, so that the dust and debris generated in the polishing process can fall into the ring-shaped recessed plate 4, and then fall into the collecting box 42 through the discharging port 41 for centralized collection. The whole process is environmentally friendly and can also play a certain noise reduction role.

[0050] In addition, the outer side of the annular recessed plate 4 is provided with a pair of symmetrical arc-shaped notches 40, which are located on both sides of the bottom of the annular recessed plate 4 and extend in the same direction as the contour of the annular recessed plate 4. A moving rod 45 is arranged in the annular recessed plate 4, the end of the moving rod 45 extends out of the arc-shaped notch 40, and a brush roller 44 is rotatably arranged on the part of the moving rod 45 in the annular recessed plate 4. The brush roller 44 is in contact with the inner wall of the annular recessed plate 4. A driving assembly is arranged on the outer side of the mounting plate 3, which is used to drive the moving rod 45 to slide along the extension direction of the arc-shaped notch 40.

[0051] In this embodiment, the driving assembly includes a servo motor 46 mounted on the outer side of the mounting plate 3. A telescopic rod 47 is mounted on the output end of the servo motor 46, and the end of the telescopic rod 47 away from the servo motor 46 is rotatably connected to the end of the moving rod 45 extending out of the arc-shaped notch 40.

[0052] When the brush roller 44 needs to be used, the servo motor 46 can be started to drive the telescopic rod 47 to rotate. During the rotation of the telescopic rod 47, the moving rod 45 is driven to slide in a predetermined direction, so that the brush roller 44 can clean the inner wall of the annular recessed plate 4, and the debris and dust can be swept from the discharge port 41 to the collecting box 42 along the inner wall of the annular recessed plate 4.

[0053] In addition, a plurality of suction holes are formed on both sides of the annular recessed plate 4 in the horizontal direction, and the suction holes are connected with dust removal hoses 48. The dust removal hoses 48 of this embodiment are connected with a dust collection device. When the dust collection device is started, the dust in the annular recessed plate 4 can be sucked away through the dust removal hoses 48 and concentrated for treatment. The dust collection device of this embodiment can cooperate with the brush roller 44 to more completely clean the dust and debris in the annular recessed plate 4.

[0054] Considering that in practice, there will still be a small amount of dust and debris adhering to the inner wall of the annular recessed plate 4, in this embodiment, a servo motor is mounted on the outer side of the mounting plate 3, and a knocking rod 5 is mounted on the output shaft of the servo motor. When the servo motor is started, the knocking rod 5 can be driven to knock the outer side of the annular recessed plate 4, so as to shake the dust and debris into the collecting box 42.

[0055] In this embodiment, a ring-shaped groove is also formed on the side of the annular recessed plate 4 away from the mounting plate 3, and a ring-shaped strip 49 is movably accommodated in the ring-shaped groove. A compression spring is mounted between the ring-shaped strip 49 and the inner wall of the ring-shaped groove, and the compression spring applies a spring force to the ring-shaped strip 49 away from the ring-shaped groove.

[0056] When the annular recessed plate 4 abuts against the outer side of the bridge section, the compression spring can drive the annular strip 49 to slide in the annular groove by using the elastic force of the compression spring. The advantage of this design is that the sealing effect between the bridge section and the annular recessed plate 4 can be ensured, and the annular recessed plate 4 can be buffered and noise reduction can be achieved.

[0057] In addition, considering that a small amount of dust will still float outside the annular recessed plate 4 during the grinding of the bridge section, in the embodiment, a water delivery pipe 51 is installed on the top of the annular recessed plate 4, and a water mist spraying nozzle 52 is installed on the water delivery pipe 51. The water delivery pipe 51 is connected to a water source. When the switch for controlling the water delivery pipe 51 is turned on, water mist can be sprayed through the nozzle 52 to perform dust reduction on the surrounding of the annular recessed plate 4.

[0058] It should be noted that in the embodiment, the lifting assembly can be a rodless cylinder or a hydraulic cylinder, and the driving member can be a commonly used motor. Therefore, no more description is given herein.

[0059] The above are preferred embodiments of the application, and are not intended to limit the protection scope of the application. Therefore, equivalent changes made on the basis of the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A method of constructing a bridge without support, characterized in that, The bridge section is polished by a polishing device, the polishing device comprises: a mounting frame (10) mounted on a moving seat (1); a sliding seat (2) slidingly mounted on the mounting frame (10) in the vertical direction; a lifting assembly arranged on the moving seat (1) for driving the sliding seat (2) to lift; a mounting plate (3) arranged on the sliding seat (2); a polishing assembly arranged on the mounting plate (3) for polishing; and a cleaning assembly arranged on the mounting plate (3) for cleaning the powder and debris generated by polishing. The polishing assembly comprises: a rotating shaft (31) vertically mounted on the mounting plate (3); a polishing cutter wheel (32) mounted on the rotating shaft (31); and a driving member mounted on the mounting plate (3) for driving the rotating shaft (31) to rotate; The cleaning assembly comprises: an annular recessed plate (4) arranged on the side of the mounting plate (3) away from the sliding seat (2) and surrounding the side of the rotating shaft (31); a material falling port (41) arranged on the bottom wall of the annular recessed plate (4); a collection box (42) detachably mounted on the mounting plate (3); and a material discharge pipeline (43) mounted on the bottom of the annular recessed plate (4) for connecting the material falling port (41) and the collection box (42); The outer side of the annular recessed plate (4) is provided with symmetrical arc-shaped notches (40), the annular recessed plate (4) is provided with a rod body rotating sleeve, a brush roller (44) in contact with the inner wall of the annular recessed plate (4), a moving rod (45) extending out of the arc-shaped notch (40), and the outer side of the mounting plate (3) is provided with a driving assembly for driving the moving rod (45) to slide along the arc-shaped notch (40).

2. A method of constructing a bridge without supports according to claim 1, characterized in that, The driving assembly comprises: a servo motor (46) mounted on the outer side of the mounting plate (3); and a telescopic rod (47) having one end fixed on the output end of the servo motor (46) and the other end rotatably connected to the outer end of the moving rod (45).

3. A method of constructing a bridge without supports according to claim 1, characterized in that, The annular recessed plate (4) is provided with a plurality of suction holes on both sides in the horizontal direction, and the suction holes are connected with dust removal hoses (48), and the dust removal hoses (48) are connected with dust collection equipment.

4. A method of building a bridge without supports according to claim 1, characterized in that, The side of the annular recessed plate (4) away from the mounting plate (3) is provided with an annular groove, the annular groove movably contains an annular strip (49), and a compression spring is arranged between the annular strip (49) and the inner wall of the annular groove.

5. A method of constructing a bridge without supports according to claim 1, characterized in that, The outer periphery of the mounting plate (3) is provided with a plurality of knocking assemblies for knocking the annular recessed plate (4).

6. A method of constructing a bridge without supports according to claim 1, characterized in that, The method comprises the following steps: Step one: using a gantry crane to suspend and assemble the first bridge section to the predetermined position on both sides of the adjacent pier; Step two: suspending and assembling the second bridge section to the side of the first bridge section away from the pier; Step three: using a gantry crane to hoist the third bridge section to the predetermined position between the adjacent two piers, so that the two ends of the third bridge section are respectively folded with the end portions of the second bridge section, to complete the assembly of the bridge between the adjacent piers; Step four: the bridge section assembly between other adjacent piers can be repeated by the method of steps one to three.

7. A method of constructing a bridge without supports according to claim 1, characterized in that, Before the bridge pier and the first bridge section, the first bridge section and the second bridge section, the second bridge section and the third bridge section are suspended and assembled, the end of the first bridge section, the second bridge section and the third bridge section is polished and leveled by the leveling device.

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