Adjustable supporting system for tunnel center ditch formwork

Abstract

The utility model discloses an adjustable supporting system for a tunnel central ditch template, which is arranged between a left ditch template and a right ditch template and comprises a vertical upright post, a first supporting and adjusting mechanism and a second supporting and adjusting mechanism which are arranged on an inverted arch structure layer, each of the first support adjusting mechanism and the second support adjusting mechanism comprises a plurality of groups of support adjusting mechanisms arranged in the height direction; template sleeves are arranged on the left ditch template and the right ditch template; upright post sleeves are arranged on the left side and the right side of the vertical upright post; each supporting and adjusting mechanism comprises two telescopic adjusting rods inserted into the front end and the rear end of the formwork sleeve and the front end and the rear end of the stand column sleeve. The utility model has the advantages of simple structure, firm integral reinforcement of the template, capability of adjusting the line type of the central ditch template so as to adapt to the fine adjustment requirement of the tunnel central ditch template, convenience in assembly and disassembly, reusability, improvement of the finished ditch quality and improvement of the construction efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of tunnel center drainage ditch formwork, and in particular relates to an adjustable support system for tunnel center drainage ditch formwork. Background Technology

[0002] The central drainage ditch in a tunnel plays a crucial role in the tunnel's drainage system. It not only collects and discharges seepage water and rainwater in a timely manner, preventing water damage to the tunnel, but also keeps the tunnel dry and clean, improving the safety and comfort of passage.

[0003] The construction of the central drainage ditch in the tunnel begins with the pouring of the invert arch structure layer, followed by the erection of the ditch formwork on top of the invert arch structure layer, and then the pouring of the ditch concrete. However, currently, when erecting the ditch formwork, the formwork is typically fixed by embedding reinforcing bars into the concrete surface of the invert arch structure layer at the bottom of the ditch as the bottom fixing point, with the formwork itself reinforced by diagonal cross supports. While this reinforcement method can control the dimensions of the central drainage ditch itself without issue, it makes it difficult, if not impossible, to fine-tune whether the ditch formwork coincides with the tunnel centerline after fixing, resulting in poor control over the alignment of the central drainage ditch.

[0004] Therefore, there is an urgent need for an adjustable support system for tunnel center drainage ditch formwork that is simple in structure and reasonably designed. The formwork is reinforced as a whole, and the line of the center drainage ditch formwork can be adjusted to meet the needs of fine adjustment of the tunnel center drainage ditch formwork. It is easy to assemble and disassemble, and can be reused repeatedly, thereby improving the quality of the finished drainage ditch and increasing construction efficiency. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an adjustable support system for the central drainage ditch template in tunnels, which addresses the shortcomings of the prior art. The system has a simple structure, reasonable design, and the template is reinforced as a whole. The central drainage ditch template line can be adjusted to meet the needs of fine adjustment of the central drainage ditch template in tunnels. It is easy to assemble and disassemble, and can be reused repeatedly, thereby improving the quality of the finished drainage ditch and increasing construction efficiency.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an adjustable support system for a tunnel center drainage ditch template, wherein a left drainage ditch template and a right drainage ditch template are set on the invert arch structure layer, and an adjustable support system is set between the left drainage ditch template and the right drainage ditch template. The adjustable support system includes a vertical column set on the invert arch structure layer, a first support adjustment mechanism connected to the vertical column and supporting the left drainage ditch template, and a second support adjustment mechanism connected to the vertical column and supporting the right drainage ditch template. The first support adjustment mechanism and the second support adjustment mechanism have the same structure, and both the first support adjustment mechanism and the second support adjustment mechanism include multiple sets of support adjustment mechanisms arranged along the height direction.

[0007] Template sleeves are provided on the left and right templates of the ditch, and column sleeves are provided on the left and right sides of the vertical column.

[0008] Each of the aforementioned support adjustment mechanisms includes two retractable adjustment rods inserted into the front and rear ends of the template sleeve and the column sleeve.

[0009] The aforementioned adjustable support system for tunnel center drainage ditch template further includes a vertical column comprising a base plate set on the inverted arch structure layer and a rectangular column tube vertically set on the base plate. The column sleeve is set on the left and right sides of the rectangular column tube, and the length of the column sleeve is greater than the width of the rectangular column tube.

[0010] The template sleeve and the column sleeve are both multiple, and the multiple template sleeves and column sleeves are arranged along the height direction.

[0011] The aforementioned adjustable support system for tunnel center drainage ditch template further includes, in which each telescopic adjustable rod comprises a steel pipe sleeve, a left nut fixed at one end of the steel pipe sleeve, a right nut fixed at the other end of the steel pipe sleeve, a left threaded rod extending through the left nut into one end of the steel pipe sleeve and a left insert rod connected to the left threaded rod, and a right threaded rod extending through the right nut into the other end of the steel pipe sleeve and a right insert rod connected to the right threaded rod. The left insert rod is inserted into the end of the template sleeve, and the right insert rod is inserted into the end of the column sleeve.

[0012] The aforementioned adjustable support system for a tunnel center drainage ditch further comprises multiple sets of support adjustment mechanisms, namely a lower support adjustment mechanism, a middle support adjustment mechanism, and an upper support adjustment mechanism.

[0013] The aforementioned adjustable support system for tunnel center drainage ditch templates further includes multiple drainage ditch templates sequentially spliced ​​along the extension direction of the invert arch structure layer, with L-shaped ribs provided on the drainage ditch templates, pads provided on the L-shaped ribs, and template sleeves provided on the pads.

[0014] This utility model has the following advantages compared with the prior art:

[0015] 1. This utility model has a simple structure, with vertical columns and a support adjustment mechanism to support the left and right templates of the ditch, making the template as a whole more secure.

[0016] 2. In this utility model, two telescopic adjustable rods are inserted on the front and rear sides of the template sleeve and the column sleeve, so that the telescopic adjustable rods are inserted into the template sleeve and the column sleeve to connect. The telescopic adjustable rods are easy to install and remove and can be reused repeatedly. In addition, the telescopic adjustable rods can be adjusted to meet different height requirements, and have wide adaptability.

[0017] 3. This utility model is equipped with a telescopic adjustable rod for individual length adjustment. It can be quickly adjusted to meet the template support requirements and adjust the line shape of the central drainage ditch template to meet the needs of fine adjustment of the tunnel central drainage ditch template.

[0018] In summary, this utility model has a simple structure, reasonable design, and the template is reinforced and reliable. The central ditch template line can be adjusted to meet the needs of fine adjustment of the central ditch template in the tunnel. It is easy to assemble and disassemble, and can be reused repeatedly, which improves the quality of the finished ditch and increases construction efficiency.

[0019] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of the practical support and adjustment mechanism.

[0022] Figure 3 This is a schematic diagram of the vertical column structure of this utility model.

[0023] Figure 4 This is a schematic diagram of the retractable adjustable rod of this utility model.

[0024] Figure 5 This is a schematic diagram of the structure of the left template and right template of the water ditch of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1—Vertical column; 1-1—Base plate; 1-2—Rectangular column tube;

[0027] 1-3—Column sleeve; 1-4—Bottom mounting hole; 2—Telescopic adjusting rod;

[0028] 2-1—Steel pipe sleeve; 2-2—Left nut; 2-3—Right nut;

[0029] 2-4—Left screw; 2-5—Right screw; 2-6—Left insert rod;

[0030] 2-7—Right insertion rod; 3—Lower support adjustment mechanism; 4—Middle support adjustment mechanism;

[0031] 5—Upper support adjustment mechanism; 9—Drainage ditch formwork; 9-1—Formwork sleeve;

[0032] 9-2—Padded block; 9-3—L-shaped rib; 9-4—Frame;

[0033] 10—First support adjustment mechanism; 11—Second support adjustment mechanism;

[0034] 12—Left formwork for the ditch; 13—Right formwork for the ditch. Detailed Implementation

[0035] like Figures 1 to 5 As shown, this utility model sets a left template 12 and a right template 13 for a drainage ditch on the inverted arch structure layer. An adjustable support system is set between the left template 12 and the right template 13. The adjustable support system includes a vertical column 1 set on the inverted arch structure layer, a first support adjustment mechanism 10 connected to the vertical column 1 and supporting the left template 12, and a second support adjustment mechanism 11 connected to the vertical column 1 and supporting the right template 13. The first support adjustment mechanism 10 and the second support adjustment mechanism 11 have the same structure, and both the first support adjustment mechanism 10 and the second support adjustment mechanism 11 include multiple sets of support adjustment mechanisms arranged along the height direction.

[0036] Template sleeves 9-1 are provided on the left template 12 and the right template 13 of the ditch, and column sleeves 1-3 are provided on the left and right sides of the vertical column 1.

[0037] Each of the aforementioned support adjustment mechanisms includes two retractable adjustment rods 2 at the front and rear ends of the insert template sleeve 9-1 and the column sleeve 1-3.

[0038] In this embodiment, the vertical column 1 includes a base plate 1-1 set on the arch structure layer and a rectangular column tube 1-2 set vertically on the base plate 1-1. The column sleeve 1-3 is set on the left and right sides of the rectangular column tube 1-2, and the length of the column sleeve 1-3 is greater than the width of the rectangular column tube 1-2.

[0039] There are multiple template sleeves 9-1 and column sleeves 1-3, and the multiple template sleeves 9-1 and column sleeves 1-3 are arranged along the height direction.

[0040] In this embodiment, each telescopic adjusting rod 2 includes a steel pipe sleeve 2-1, a left nut 2-2 fixed at one end of the steel pipe sleeve 2-1, a right nut 2-3 fixed at the other end of the steel pipe sleeve 2-1, a left screw 2-4 extending through the left nut 2-2 into one end of the steel pipe sleeve 2-1, and a left insert rod 2-6 connected to the left screw 2-4; and a right screw 2-5 extending through the right nut 2-3 into the other end of the steel pipe sleeve 2-1, and a right insert rod 2-7 connected to the right screw 2-5. The left insert rod 2-6 is inserted into the end of the template sleeve 9-1, and the right insert rod 2-7 is inserted into the end of the column sleeve 1-3.

[0041] In this embodiment, the multiple sets of support adjustment mechanisms are the lower support adjustment mechanism 3, the middle support adjustment mechanism 4, and the upper support adjustment mechanism 5.

[0042] In this embodiment, both the left template 12 and the right template 13 of the ditch include multiple ditch templates 9 that are sequentially spliced ​​along the extension direction of the arch structure layer. The ditch template 9 is provided with L-shaped ribs 9-3, and pads 9-2 are provided on the L-shaped ribs 9-3. The template sleeve 9-1 is provided on the pads 9-2.

[0043] In this embodiment, the four corners of the base plate 1-1 are provided with bottom mounting holes 1-4. Screws are inserted through the bottom mounting holes 1-4 to set the base plate 1-1 on the arch structure layer, thereby realizing the vertical installation of the rectangular column tube 1-2.

[0044] The lengths of the upright sleeve 1-3 and the right sleeve 1-3 are greater than the width of the rectangular column 1-2 in order to make room for the telescopic adjustment rod 2 and avoid it from being too close to the outer wall of the rectangular column 1-2, thus preventing wear on the outer wall of the rectangular column 1-2.

[0045] In this embodiment, there are three column sleeves 1-3 on one side, and the three column sleeves 1-3 are arranged at the bottom, middle and top along the height direction of the rectangular column 1-2.

[0046] In this embodiment, in actual use, one vertical column 1 is set every 1m or 1.5m along the tunnel extension direction.

[0047] In this embodiment, in actual use, both the right screw 2-5 and the left screw 2-4 are threaded rods of M36×165mm, and the thread directions of the right screw 2-5 and the left screw 2-4 are opposite.

[0048] In this embodiment, in actual use, the right nut 2-3 and the left nut 2-2 are welded to both ends of the steel pipe sleeve 2-1, and the steel pipe sleeve 2-1 is coaxially arranged with the right nut 2-3 and the left nut 2-2. The right nut 2-3 and the left nut 2-2 are both M36 nuts, and they are respectively matched with the right screw 2-5 and the left screw 2-4.

[0049] In this embodiment, adjusting the first support adjustment mechanism 10 and the second support adjustment mechanism 11 specifically involves: rotating the steel pipe sleeve 2-1 so that the two ends of the right screw 2-5 and the left screw 2-4 move closer to each other when the thread directions of the right screw 2-5 and the left screw 2-4 are opposite, thereby reducing the length of the telescopic adjustment rod 2; rotating the steel pipe sleeve 2-1 in the opposite direction so that the two ends of the right screw 2-5 and the left screw 2-4 move further apart, thereby increasing the length of the telescopic adjustment rod 2.

[0050] In this embodiment, the distance between the left template 12 and the right template 13 of the drainage ditch can be adjusted by adjusting the length of the telescopic adjustable rod, thereby adjusting the shape of the central drainage ditch template to meet the needs of fine adjustment of the central drainage ditch template in the tunnel.

[0051] In this embodiment, two telescopic adjustable rods 2 are provided on the front and rear sides of the template sleeve 9-1 and the column sleeve 1-3. The two telescopic adjustable rods 2 form two support points, dispersing the template load and reducing the risk of instability caused by the force on the telescopic adjustable rods 2; it also avoids the situation where the other rod can still provide temporary support when one rod fails, reducing the risk of collapse; in addition, the two telescopic adjustable rods 2 are provided so that their lengths can be adjusted individually, and the template support requirements can be met through quick adjustment. Furthermore, the lateral displacement of the rods is constrained by the template sleeve 9-1 and the column sleeve 1-3, thereby improving the load-bearing capacity.

[0052] In this embodiment, a telescopic adjustable rod 2 is provided. The telescopic adjustable rod 2 is inserted into the template sleeve 9-1 and connected to the column sleeve 1-3. It is easy to install and disassemble and can be reused repeatedly. In addition, the telescopic adjustable rod 2 can be adjusted to meet different height requirements, and has wide adaptability.

[0053] In this embodiment, both the left insertion rod 2-6 and the left insertion rod 2-6 are round steel bars. The round steel bars are inserted into the ends of the template sleeve 9-1 and the column sleeve 1-3. The connection node allows the round steel bars to rotate slightly within the sleeve, which can automatically compensate for the impact deformation of the template due to concrete pouring and avoid stress concentration caused by rigid connection. Secondly, the direct insertion of round steel bars facilitates quick installation.

[0054] In this embodiment, in actual use, the left and right sides of the drainage ditch template 9 are provided with frame 9-4, and the frame 9-4 of two adjacent drainage ditch templates 9 are connected by bolts so that the two drainage ditch templates 9 can be spliced ​​together.

[0055] In this embodiment, in actual use, half a template sleeve 9-1 is set on the left and right sides of two adjacent ditch templates 9 respectively, so that after the two adjacent ditch templates 9 are spliced ​​together, a template sleeve 9-1 is formed.

[0056] In this embodiment, in actual use, setting L-shaped ribs 9-3 can not only strengthen the strength of the water ditch template 9 and meet the subsequent pouring requirements, but also realize the installation of pad blocks 9-2 and template sleeves 9-1.

[0057] In practical use, this utility model involves setting up a vertical column 1, a left formwork 12 for the drainage ditch, and a right formwork 13 for the drainage ditch on the arch structure layer. A first support adjustment mechanism 10 is supported between the vertical column 1 and the left formwork 12, and a second support adjustment mechanism 11 is supported between the vertical column 1 and the right formwork 13. The first support adjustment mechanism 10 and the second support adjustment mechanism 11 are adjusted so that the distance between the left formwork 12 and the right formwork 13 of the drainage ditch meets the construction requirements. Then, the drainage ditch concrete is poured.

[0058] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A kind of adjustable support system of tunnel center water ditch template, water ditch left template (12) and water ditch right template (13) are arranged on inverted arch structure layer, it is characterized by: An adjustable support system is arranged between the water ditch left formwork (12) and the water ditch right formwork (13), the adjustable support system comprises vertical columns (1) arranged on the inverted arch structure layer, a first support adjusting mechanism (10) connected with the vertical columns (1) and supporting the water ditch left formwork (12), and a second support adjusting mechanism (11) connected with the vertical columns (1) and supporting the water ditch right formwork (13), the first support adjusting mechanism (10) and the second support adjusting mechanism (11) are the same in structure, and the first support adjusting mechanism (10) and the second support adjusting mechanism (11) each comprise a plurality of groups of support adjusting mechanisms arranged in the height direction; The water ditch left formwork (12) and the water ditch right formwork (13) are provided with formwork sleeves (9-1), and the vertical columns (1) are provided with column sleeves (1-3) on the left and right sides; Each support adjusting mechanism comprises two telescopic adjusting rods (2) inserted into the front and rear ends of the formwork sleeves (9-1) and the column sleeves (1-3).

2. An adjustable support system for tunnel center channel forms as defined in claim 1, wherein: The vertical columns (1) comprise bottom plates (1-1) arranged on the inverted arch structure layer and rectangular column cylinders (1-2) vertically arranged on the bottom plates (1-1), the column sleeves (1-3) are arranged on the left and right sides of the rectangular column cylinders (1-2), and the length of the column sleeves (1-3) is greater than the width of the rectangular column cylinders (1-2); The number of the formwork sleeves (9-1) and the column sleeves (1-3) is multiple, and the plurality of formwork sleeves (9-1) and column sleeves (1-3) are arranged in the height direction.

3. An adjustable support system for tunnel center channel forms as defined in claim 1, wherein: Each telescopic adjusting rod (2) comprises a steel pipe sleeve (2-1), a left nut (2-2) fixed at one end of the steel pipe sleeve (2-1), a right nut (2-3) fixed at the other end of the steel pipe sleeve (2-1), a left screw rod (2-4) inserted into one end of the steel pipe sleeve (2-1) through the left nut (2-2), a left inserting rod (2-6) connected with the left screw rod (2-4), and a right screw rod (2-5) inserted into the other end of the steel pipe sleeve (2-1) through the right nut (2-3) and a right inserting rod (2-7) connected with the right screw rod (2-5), the left inserting rod (2-6) is inserted into the end of the formwork sleeve (9-1), and the right inserting rod (2-7) is inserted into the end of the column sleeve (1-3).

4. An adjustable support system for tunnel center channel forms as defined in claim 1, wherein: The plurality of groups of support adjusting mechanisms are respectively lower support adjusting mechanisms (3), middle support adjusting mechanisms (4) and upper support adjusting mechanisms (5).

5. An adjustable support system for tunnel center channel forms as defined in claim 1 wherein: The water ditch left formwork (12) and the water ditch right formwork (13) each comprise a plurality of water ditch formworks (9) sequentially spliced in the extension direction of the inverted arch structure layer, the water ditch formwork (9) is provided with an L-shaped rib (9-3), the L-shaped rib (9-3) is provided with a cushion block (9-2), and the formwork sleeve (9-1) is arranged on the cushion block (9-2).

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