Vibration auxiliary mechanism, box culvert mold, box culvert and box culvert detection method

Abstract

The invention relates to a box culvert, and discloses a vibration auxiliary mechanism, a box culvert mold, a box culvert and a box culvert detection method.The vibration auxiliary mechanism comprises two supporting frames relatively fixed to the upper end face of the box culvert mold and an auxiliary frame connected between the two supporting frames and capable of horizontally sliding in the length direction of the supporting frames; the supporting frame is further provided with a positioning assembly used for positioning the auxiliary frame. The auxiliary frame comprises a horizontally-arranged standing plate, the two ends of the standing plate are connected to the two supporting frames respectively, a plurality of vibrating positioning seats are evenly arranged on one side face of the standing plate in the length direction of the standing plate at intervals, and positioning holes for vibrating rods of the vibrator to be inserted are formed in the vibrating positioning seats. A construction standing position can be provided for an operator, the situation that a steel reinforcement cage deforms or collapses due to the fact that the constructor stands on a top plate steel reinforcement is avoided, and meanwhile potential safety hazards in the construction process of the constructor can be reduced.

Description

Technical Field

[0001] The invention relates to a box culvert, in particular to a casting mould for construction. Background Art

[0002] A box culvert is a culvert constructed with reinforced concrete box-shaped pipe sections, consisting of one or more square or rectangular sections. Box culverts are typically cast-in-place, with internal and external formwork supported within a pre-excavated trench. Pre-fabricated rebar is then tied on-site to form a steel skeleton and placed within the molds.

[0003] Larger box culverts generally cast the bottom plate and the lower half of the side wall first, then tie the upper part of the side wall and the top plate steel bars, support the inner and outer formwork, and cast the upper part of the side wall and the top plate. After the concrete is poured, it needs to be vibrated and screed. During this operation, the construction workers need to stand on the top plate steel bars. On the one hand, it may cause the steel cage to deform or collapse and affect the stability of the box culvert structure. On the other hand, the steel bars may slip or break due to external forces, posing a major safety hazard. Summary of the Invention

[0004] Aiming at the problems existing in the box culvert construction in the prior art, the present invention provides a vibration auxiliary mechanism, a box culvert mould, a box culvert and a box culvert detection method.

[0005] In order to solve the above technical problems, the present invention is solved by the following technical solutions: The vibration auxiliary mechanism includes two support frames relatively fixed to the upper end surface of the box culvert mold and an auxiliary frame connected between the two support frames and capable of sliding horizontally along the length direction of the support frames. The support frames are also provided with a positioning assembly for positioning the auxiliary frame; The auxiliary frame includes a horizontally arranged standing plate, the two ends of which are respectively connected to two supporting frames. A plurality of vibrating positioning seats are evenly spaced along the length direction of the standing plate on one side surface of the standing plate, and the vibrating positioning seats are provided with positioning holes for inserting the vibrating rod of the vibrator.

[0006] Preferably, the support frame includes a horizontally arranged support plate and a positioning plate vertically arranged on the support plate, a slide rail is provided on the end surface of the support plate facing the auxiliary frame, and a standing plate slider slidably connected to the slide rail is provided at the lower end surface of the standing plate; The positioning assembly includes multiple positioning blocks mounted on the positioning plate and spaced evenly along the sliding direction of the auxiliary frame. It also includes positioning members mounted on the ends of the standing plate and capable of being positioned there in conjunction with the positioning blocks. The combination of these multiple positioning blocks and positioning holes enables determinant-like vibration during the vibration process, ensuring uniform vibration of the concrete inside, preventing missed vibration points, and ensuring orderly vibration.

[0007] Preferably, the positioning member includes two positioning clips, a positioning groove formed between the two positioning clips for cooperating with the positioning block, and a mounting base fixed to the standing plate, the mounting base being provided with a positioning shaft, the lower ends of the two positioning clips being rotatably connected to the two ends of the positioning shaft, the positioning shaft being provided with a torsion spring for driving the positioning groove to move toward the positioning block, and the two positioning clips being further connected to a pedal rod, which, when stepped on, can drive the positioning groove to disengage the positioning block. The provision of the positioning clips can achieve fixed-point limit of the auxiliary frame on the support frame, thereby ensuring smooth progress of the vibration construction.

[0008] Preferably, the device further includes a positioning member limiting mechanism, comprising a positioning member mounting plate fixed to the standing board, the positioning member mounting plate being threadedly connected to a horizontally disposed limiting bolt capable of blocking above the foot pedal. When the limiting bolt blocks above the foot pedal, the positioning slot and the positioning block are disengaged. The positioning member limiting mechanism, through the action of the limiting bolt, allows the operator to maintain the released limiting state without having to step on the foot pedal, thereby making operation more convenient.

[0009] Preferably, the positioning plate is provided with a long groove for installing the positioning block along its length, and the long groove is provided with multiple groups of positioning block limiting assemblies along its length, the positioning block limiting assemblies including two arc limiting plates respectively fixed to the upper and lower sides of the long groove and with arc-shaped concave surfaces arranged opposite to each other, and also including a positioning block mounting plate for fixing the positioning block, and the back of the positioning block mounting plate away from the positioning block is provided with a positioning slider capable of sliding in the long groove, and the positioning slider can be fixed to the positioning block limiting assembly by a positioning bolt. The positioning block is fixed by the positioning bolt and the positioning bolt is limited by the arc limiting plate, which can effectively ensure the stability of the position of the positioning block in the long groove and prevent the positioning block from slipping and failing to position the standing board when the external force is large.

[0010] Preferably, the auxiliary frame further comprises a plurality of protective supports vertically arranged at the edge of the standing board and located between adjacent vibrating positioning seats and between the vibrating positioning seats and the end of the standing board. The provision of the protective supports can reduce construction safety hazards.

[0011] Preferably, the auxiliary frame is further provided with a trowel plate for smoothing the top concrete. The trowel plate is disposed on the side of the standing plate away from the vibrating positioning seat, and the area between the trowel plate and the protective bracket forms the standing area of the standing plate. The trowel plate not only provides a certain degree of protection for the standing area, but also enables smoothing of the upper end surface of the concrete.

[0012] Preferably, the protective bracket is a U-shaped bracket structure with an opening downward, and a protective plate with a vertically arranged plate surface is installed in the middle of the protective bracket. A downward-bent arc plate is provided on the plate surface of the protective plate facing away from the standing area, and the arc plate is formed with an arc groove opening upward for supporting the soft shaft of the vibrator, so that the vibration construction can be carried out better.

[0013] Preferably, two trowel plate mounting seats are fixed on the side of the standing board, the trowel plate mounting seats include trowel plate mounting slots, the trowel plate mounting seats are provided with trowel plate adjustment holes connected to the trowel plate mounting slots, the trowel plate adjustment holes are long holes and are vertically arranged in the length direction, both ends of the trowel plate are provided with trowel plate connecting blocks that can be inserted into the trowel plate mounting slots from top to bottom, and the trowel plate connecting blocks are provided with trowel plate limiting holes fixed to the trowel plate adjustment holes by trowel plate limiting bolts. By connecting the trowel plate limiting holes and the trowel plate adjustment holes at different positions, the height of the trowel plate can be adjusted, thereby making it possible to better smooth the concrete at the upper end surface in the initial setting state.

[0014] The box culvert mold includes an inner mold and an outer mold. A vibration auxiliary mechanism is installed on the upper end surface of the outer mold. The box culvert is prepared based on the aforementioned box culvert mold.

[0015] The box culvert inspection method is used to perform quality inspection on the aforementioned box culvert, and specifically comprises the following steps: Step S1: Detecting the grouting density: Step S11, using an ultrasonic method to test the sound wave velocity corresponding to different distances when not crossing the seam at the left side, right side, top, and bottom of the box culvert, fitting a regression equation between the sound time and the distance, and using the regression equation to obtain theoretical sound time values corresponding to different distances; Step S12: Based on the theoretical acoustic time value, the acoustic time value of the concrete surface at the joints of the box culvert is measured across the joints; Step S13: Compare the acoustic time value obtained in step S11 with the acoustic time value obtained in step S12 to evaluate the grouting density of different parts; Step S2: Perform water filling test: Step S21: After the box culvert is installed, strain gauges are laid out at the joints of the box culvert, and water retaining cofferdams are set at the inlet and outlet to fill and drain water into the box culvert; Step S22: After draining, collect strain gauge data and observe the water seepage at the box culvert joints. The present invention has significant technical effects due to the adoption of the above technical solutions: The present invention can provide a construction standing position for operators, avoiding situations where construction workers stand on the top plate steel bars and cause deformation or collapse of the steel cage, and can also reduce safety hazards of construction workers during the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of embodiment 1 of the present invention.

[0017] Figure 2 It is a structural schematic diagram of the vibration auxiliary mechanism in Example 1 of the present invention.

[0018] Figure 3 yes Figure 2 A partial enlarged view of part A.

[0019] Figure 4 yes Figure 2 Schematic diagram of the structure of the auxiliary frame.

[0020] Figure 5 yes Figure 4 Another perspective structural diagram.

[0021] Figure 6 yes Figure 4 A partial enlarged view of part A.

[0022] Figure 7 yes Figure 2 Schematic diagram of the structure of the middle support frame.

[0023] Figure 8 yes Figure 7 A partial enlarged view of part A.

[0024] Figure 9 It is a linear graph of the regression equation of grouting density tested by ultrasonic method in Example 3 of the present invention.

[0025] Figure 10 This is a schematic diagram of the buried box culvert strain gauge in Example 3 of the present invention.

[0026] Figure 11 This is a graph showing the strain variation trend of concrete at the joints of the box culvert water filling test in Example 3 of the present invention. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0028] Example 1 This embodiment provides a box culvert mold, such as Figures 1-8 As shown, it includes an inner mold 10 and an outer mold 20. The outer mold 20 includes a bottom mold, front and rear end molds, and left and right side molds. The structure is box-shaped, and a vibration auxiliary mechanism is installed on the upper end surface of the box.

[0029] The vibration auxiliary mechanism includes two support frames 1 relatively fixed to the upper end surface of the box culvert mold and an auxiliary frame 2 connected between the two support frames 1 and capable of sliding horizontally along the length direction of the support frames 1. The support frames 1 are also provided with a positioning assembly 3 for positioning the auxiliary frame 2; The auxiliary frame 2 includes a horizontally arranged standing plate 201, the two ends of which are respectively connected to two supporting frames 1. A plurality of vibrating positioning seats 202 are evenly spaced along the length direction of the standing plate 201 on one side surface of the standing plate 201, and the vibrating positioning seats 202 are provided with positioning holes 203 for inserting the vibrating rod of the vibrator.

[0030] In this embodiment, two support frames 1 are fixed to both ends of the box culvert mold along the width direction. They can be connected by bolts. After the vibration and leveling construction is completed, the vibration auxiliary mechanism can be removed from the box culvert mold. The support frame 1 includes a horizontal support plate 101 and a positioning plate 102 vertically arranged on the support plate 101. The support plate 101 and the positioning plate 102 together form an L-shaped plate. The width of the support plate 101 and the width of the standing plate 201 are both sufficient for construction workers to walk. A slide rail 103 is provided on the end face of the support plate 101 facing the auxiliary frame 2, and a standing plate slider 204 is provided on the lower end face of the standing plate 201, which is slidably connected to the slide rail 103; under the action of the slide rail 103 and the standing plate slider 204, the auxiliary frame 2 can slide horizontally along the length direction of the support frame 1. During work, two construction workers can stand directly on the two support plates 101 and push the auxiliary frame 2 to the corresponding position with their feet.

[0031] The positioning assembly 3 includes a plurality of positioning blocks 301 arranged on the positioning plate 102 and evenly spaced along the sliding direction of the auxiliary frame 2 , and also includes a positioning piece 302 arranged at the end of the standing plate 201 and cooperating with the positioning block 301 to be limited at the positioning block 301 .

[0032] During the construction process, the auxiliary frame 2 is positioned row by row along the positioning block 301. The construction workers are on the standing plate 201, which can provide a construction standing position for the operators, avoiding the construction workers standing on the top plate steel bars and causing deformation or collapse of the steel cage, etc., and at the same time, it can also reduce the safety hazards of the construction workers during the construction process.

[0033] In this embodiment, an insert vibration method is adopted. During construction, the operator inserts the vibrating rod into the positioning hole 203 in sequence along the width direction of the box culvert mold, and vibrates the concrete in the steel skeleton in sequence. After vibrating the previous row, the auxiliary frame 2 is moved to the next row of positioning blocks 301. This vibration method can effectively realize determinant vibration during the vibration process, ensure the uniformity of internal concrete vibration, and will not miss the vibration point, so that the vibration work can be carried out in an orderly manner.

[0034] In this embodiment, the positioning member 302 includes two positioning clamps 303, and a positioning groove 304 cooperating with the positioning block 301 is formed between the two positioning clamps 303. It also includes a mounting base 305 fixed on the standing board 201, and a positioning shaft 306 is provided on the mounting base 305. The lower ends of the two positioning clamps 303 are respectively rotatably connected to the two ends of the positioning shaft 306. The positioning shaft 306 is provided with a torsion spring 307 for driving the positioning groove 304 to move toward the positioning block 301. The two positioning clamps 303 are also connected to a pedal rod 308, which can drive the positioning groove 304 to disengage from the positioning block 301 when the pedal rod 308 is stepped on.

[0035] During the positioning process, the positioning card plate 303 moves toward the positioning block 301 under the action of the torsion spring 307, so that the positioning block 301 is stuck between the two positioning card plates 303, that is, in the positioning groove 304. At this time, the auxiliary frame 2 is in a positioning state and cannot slide along the length direction of the support frame 1. The construction worker can vibrate the concrete at the relative position of the group of positioning blocks 301; when the row of vibration points are all vibrated, the construction worker stands on the support plate 101, steps on the foot pedal 308 with the toe of one foot, and the heel is still on the support plate 101, after the foot pedal 308 is stepped on, it overcomes the elastic force of the torsion spring 307 and drives the positioning clamp 303 to rotate, so that the positioning clamp 303 is separated from the positioning block 301. At this time, the construction worker pushes the standing board 201 forward by foot to release the limit between the standing board 201 and the support board 101. When pushing to the next set of positioning blocks 301, the foot pedal 308 is also stepped on to make the positioning blocks 301 fit into the positioning groove 304, and limit the position again at this point to achieve vibration of the vibration points corresponding to the row of positioning holes 203.

[0036] In addition, this embodiment also includes a positioning member limiting mechanism, which includes a positioning member mounting plate 309 fixed on the standing board 201, and a limiting bolt 310 is threadedly connected to the positioning member mounting plate 309 and is arranged horizontally and can be blocked above the foot pedal 308. When the limiting bolt 310 is blocked above the foot pedal 308, the positioning slot 304 and the positioning block 301 are in a disengaged state, and the limiting bolt 310.

[0037] The auxiliary frame 2 can be completely removed from the support frame 1. During the removal process, the foot pedal 308 can be directly limited by the limiting bolt 310. The limiting bolt 310 is screwed into the top of the foot pedal 308, so that the foot pedal 308 is pressed downward by the limiting bolt 310. At this time, the two clamping plates can be separated from the positioning block 301, and the positioning block 301 is released from the limit of the standing board 201. The staff can directly move the entire auxiliary frame 2 from one end of the support frame 1 to the other end and remove it from the support frame 1. During this process, due to the action of the limiting bolt 310, the staff does not need to step on the pedal with their feet, and the operation is more convenient.

[0038] In this embodiment, the positioning plate 102 is provided with a long groove 104 for installing the positioning block 301 along the length direction, and the long groove 104 is provided with multiple groups of positioning block limiting components along the length direction. The positioning block limiting component includes two arc limiting plates 105 respectively fixed on the upper and lower sides of the long groove 104 and with arc-shaped concave surfaces arranged opposite to each other, and also includes a positioning block mounting plate 106 for fixing the positioning block 301. The back of the positioning block mounting plate 106 away from the positioning block 301 is provided with a positioning slider 107 that can slide in the long groove 104, and the positioning slider 107 can be fixed to the positioning block limiting component by a positioning bolt 108.

[0039] The diameter of the bolt is larger than the width of the long groove 104, so that the positioning bolt 108 can be pressed tightly against the surface of the support plate 101; the positioning block 301 is fixed by the positioning bolt 108 and the positioning bolt 108 is limited by the arc limit plate 105, which can effectively ensure the stability of the position of the positioning block 301 in the long groove 104 and prevent the positioning block 301 from slipping and failing to position the standing plate 201 when the external force is large.

[0040] In addition, in this embodiment, multiple groups of positioning block limit assemblies are provided, and positioning blocks 301 at different positions can be selected according to actual needs to adjust the positioning spacing of the auxiliary frame 2, such as selecting adjacent positioning blocks 301 for positioning one by one or selecting positioning blocks 301 set at intervals for positioning one by one, so as to adjust the spacing of the vibration positions.

[0041] In this embodiment, the auxiliary frame 2 also includes a plurality of protective supports 4 vertically arranged at the edge of the standing plate 201 and located between adjacent vibrating positioning seats 202 and between the vibrating positioning seats 202 and the ends of the standing plate 201. The auxiliary frame 2 is also provided with a trowel plate 5 for smoothing the top concrete, wherein the height of the trowel plate 5 can be adjusted.

[0042] Specifically, two trowel plate mounting seats 501 are fixed on the side of the standing board 201, and the trowel plate mounting seats 501 include trowel plate mounting slots 502. The trowel plate mounting seats 501 are provided with trowel plate adjustment holes 503 that are connected to the trowel plate mounting slots 502. The trowel plate adjustment holes 503 are long holes and are vertically arranged in the length direction. Both ends of the trowel plate 5 are provided with trowel plate connecting blocks 504 that can be inserted into the trowel plate mounting slots 502 from top to bottom. The trowel plate connecting blocks 504 are provided with trowel plate limiting holes that are fixed to the trowel plate adjusting holes 503 by trowel plate limiting bolts 505. By connecting the trowel plate limiting holes and the trowel plate adjusting holes 503 at different positions, the height of the trowel plate 5 can be adjusted, thereby enabling it to better smooth the concrete at the upper end surface in the initial setting state. During the smoothing operation, the foot pedal 308 can be limited by the limiting bolts 310 to achieve smooth smoothing of the upper end surface of the concrete by the auxiliary frame 2.

[0043] In this embodiment, the trowel plate 5 is arranged on the side of the standing plate 201 away from the vibrating positioning seat 202. The standing area of the standing plate 201 is formed between the trowel plate 5 and the protective bracket 4. Both the trowel plate 5 and the protective bracket 4 can play a certain protective role for the construction personnel in the standing area. The height of the trowel plate 5 and the protective bracket 4 should not be too high or too low, and is about 0.5m. Too low will lead to poor protection effect, and too high will affect construction.

[0044] The protective bracket 4 is a U-shaped bracket structure with an opening facing downward. A protective plate 401 with a vertically arranged plate surface is installed in the middle of the protective bracket 4. A downward-bent arc plate 402 is provided on the plate surface of the protective plate 401 facing away from the standing area. The arc plate 402 is formed with an upward-opening arc groove 403 for supporting the soft shaft of the vibrator to facilitate vibration construction.

[0045] Example 2 This embodiment provides a box culvert, which is prepared based on the box culvert mold in Example 1.

[0046] Example 3 This embodiment provides a box culvert detection method for performing quality detection on the box culvert in Example 2, such as Figures 9-11 As shown, the specific steps include: Step S1: Detecting the grouting density: Step S11, using an ultrasonic method to test the sound wave velocity corresponding to different distances when not crossing the seam at the left side, right side, top, and bottom of the box culvert, fitting a regression equation between the sound time and the distance, and using the regression equation to obtain theoretical sound time values corresponding to different distances; Step S12: Based on the theoretical acoustic time value, the acoustic time value of the concrete surface at the joints of the box culvert is measured across the joints; Step S13: Compare the acoustic time value obtained in step S11 with the acoustic time value obtained in step S12 to evaluate the grouting density of different parts; Step S2: Perform water filling test: Step S21: After the box culvert is installed, strain gauges are laid out at the joints of the box culvert, and water retaining cofferdams are set at the inlet and outlet to fill and drain water into the box culvert; Step S22: After drainage, collect strain gauge data and observe water seepage at the box culvert joints.

[0047] Test results: (1) In this embodiment, when measuring the span of the box culvert, the difference between the measured value of the acoustic wave velocity and the theoretical value is basically within 5%, and it is believed that the grouting density at the joints of the prefabricated box culvert meets the requirements.

[0048] (2) The strain data collected at the joints showed a trend consistent with the actual filling and drainage conditions. As the water level increased, the strain data increased. After drainage, the collected data converged, indicating that the surface of the precast box culvert joints was in an elastic stage during the filling and drainage period. The maximum value of the collected strain data was -29.0 με, which was far below the compressive strain limit of C30 concrete (approximately -670 με). After drainage, the precast box culvert joints were inspected one by one, and no surface defects or signs of water seepage were found.

[0049] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application based on one or several embodiments provided in the present application to obtain other embodiments, and these embodiments do not exceed the scope of protection of the present application.

[0050] In short, the above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the patent of the present invention.

Claims

1. A vibrating auxiliary mechanism, characterized in that: It comprises two support frames (1) relatively fixed to the upper end surface of the box culvert mold and an auxiliary frame (2) connected between the two support frames (1) and capable of sliding horizontally along the length direction of the support frames (1); the support frame (1) is also provided with a positioning component (3) for positioning the auxiliary frame (2); The auxiliary frame (2) comprises a horizontally arranged standing plate (201), the two ends of the standing plate (201) being connected to the two support frames (1) respectively, a plurality of vibrating positioning seats (202) being evenly spaced along the length direction of the standing plate (201) on one side surface of the standing plate (201), and a positioning hole (203) for inserting a vibrating rod of a vibrator is provided on the vibrating positioning seat (202).

2. The vibration auxiliary mechanism according to claim 1, characterized in that: The support frame (1) comprises a horizontally arranged support plate (101) and a positioning plate (102) vertically arranged on the support plate (101); a slide rail (103) is provided on the end surface of the support plate (101) facing the auxiliary frame (2); and a standing plate slider (204) is provided at the lower end surface of the standing plate (201) and is slidably connected to the slide rail (103); The positioning assembly (3) comprises a plurality of positioning blocks (301) arranged on the positioning plate (102) and evenly spaced along the sliding direction of the auxiliary frame (2), and also comprises a positioning piece (302) arranged at the end of the standing plate (201) and cooperating with the positioning block (301) to be limited at the positioning block (301).

3. The vibration auxiliary mechanism according to claim 2, characterized in that: The positioning member (302) includes two positioning card plates (303), a positioning groove (304) that cooperates with the positioning block (301) is formed between the two positioning card plates (303), and also includes a mounting seat (305) fixed on the standing plate (201), a positioning shaft (306) is provided on the mounting seat (305), the lower ends of the two positioning card plates (303) are respectively rotatably connected to the two ends of the positioning shaft (306), and the positioning shaft (306) is provided with a torsion spring (307) for driving the positioning groove (304) to move toward the positioning block (301), and the two positioning card plates (303) are also connected to a pedal rod (308), which can drive the positioning groove (304) to disengage from the positioning block (301) when the pedal rod (308) is stepped on.

4. The vibrating auxiliary mechanism according to claim 3, characterized in that: The invention also includes a positioning member limiting mechanism, which includes a positioning member mounting plate (309) fixed on the standing plate (201), and a limiting bolt (310) arranged transversely and capable of blocking above the pedal rod (308) is threadedly connected to the positioning member mounting plate (309). When the limiting bolt (310) blocks above the pedal rod (308), the positioning groove (304) and the positioning block (301) are in a disengaged state.

5. The vibration auxiliary mechanism according to claim 2, characterized in that: The positioning plate (102) is provided with a long groove (104) for installing the positioning block (301) along the length direction, and the long groove (104) is provided with multiple groups of positioning block limiting components along the length direction. The positioning block limiting components include two arc limiting plates (105) respectively fixed to the upper and lower sides of the long groove (104) and with arc-shaped concave surfaces arranged opposite to each other, and also include a positioning block mounting plate (106) for fixing the positioning block (301). The back of the positioning block mounting plate (106) away from the positioning block (301) is provided with a positioning slider (107) capable of sliding in the long groove (104), and the positioning slider (107) can be fixed to the positioning block limiting component by a positioning bolt (108).

6. The vibration auxiliary mechanism according to claim 2, characterized in that: The auxiliary frame (2) further comprises a plurality of protective brackets (4) vertically arranged at the edge of the standing plate (201) and located between adjacent vibrating positioning seats (202) and between the vibrating positioning seats (202) and the end of the standing plate (201); The auxiliary frame (2) is further provided with a trowel plate (5) for smoothing the top concrete. The trowel plate (5) is arranged on the side of the standing plate (201) away from the vibrating positioning seat (202). The standing area of the standing plate (201) is formed between the trowel plate (5) and the protective bracket (4); the protective bracket (4) is a U-shaped bracket structure with an opening downward, and a protective plate (401) with a vertically arranged plate surface is installed in the middle of the protective bracket (4). A downwardly curved arc plate (402) is provided on the plate surface of the protective plate (401) facing away from the standing area, and an arc groove (403) with an opening upward for supporting the soft shaft of the vibrator is formed on the arc plate (402).

7. The vibrating auxiliary mechanism according to claim 6, characterized in that: Two trowel plate mounting seats (501) are fixed on the side of the standing plate (201), the trowel plate mounting seats (501) include trowel plate mounting grooves (502), and the trowel plate mounting seats (501) are provided with trowel plate adjustment holes (503) connected to the trowel plate mounting grooves (502), the trowel plate adjustment holes (503) are long holes and are vertically arranged in the longitudinal direction, and both ends of the trowel plate (5) are provided with trowel plate connecting blocks (504) that can be inserted into the trowel plate mounting grooves (502) from top to bottom, and the trowel plate connecting blocks (504) are provided with trowel plate limiting holes fixed to the trowel plate adjusting holes (503) by trowel plate limiting bolts (505).

8. A box culvert mold, comprising an inner mold (10) and an outer mold (20), characterized in that: The upper end surface of the outer mold (20) is equipped with a vibration auxiliary mechanism according to any one of claims 1 to 7.

9. Box culvert, characterized by: The box culvert mold according to claim 8 is prepared.

10. A box culvert detection method, characterized in that: The quality inspection of the box culvert according to claim 9 specifically comprises the following steps: Step S1: Detecting the grouting density: Step S11, using an ultrasonic method to test the sound wave velocity corresponding to different distances when not crossing the seam at the left side, right side, top, and bottom of the box culvert, fitting a regression equation between the sound time and the distance, and using the regression equation to obtain theoretical sound time values corresponding to different distances; Step S12: Based on the theoretical acoustic time value, the acoustic time value of the concrete surface at the joints of the box culvert is measured across the joints; Step S13: Compare the acoustic time value obtained in step S11 with the acoustic time value obtained in step S12 to evaluate the grouting density of different parts; Step S2: Perform water filling test: Step S21: After the box culvert is installed, strain gauges are laid out at the joints of the box culvert, and water retaining cofferdams are set at the inlet and outlet to fill and drain water into the box culvert; Step S22: After drainage, collect strain gauge data and observe water seepage at the box culvert joints.

Images