High-speed railway bridge support cushion stone template adopting compressed air demolding and construction method

Abstract

The application discloses a high-speed railway bridge support cushion stone mould plate adopting compressed air demoulding and a construction method, belongs to the technical field of high-speed railway bridge support cushion stone mould plates, and comprises a cushion stone mould plate, a fixing unit, a plurality of reserved hole positioning frames and a plurality of reserved hole moulds.

Description

Technical Field

[0001] This invention belongs to the technical field of high-speed railway bridge bearing pad stone formwork, specifically relating to a high-speed railway bridge bearing pad stone formwork and construction method using compressed air demolding. Background Technology

[0002] With my country's economic development, high-speed railways, characterized by their speed, efficiency, safety, and comfort, are increasingly being put into operation. High-speed railway bridge bearings are crucial components responsible for load transfer and vibration damping, while bearing pads are key to ensuring their normal operation. High-speed railway bridge bearing pads are the connecting parts between piers, abutments, and the bottom bearings of beams. They are mostly cast in place with concrete. Before casting, holes should be pre-drilled at the anchor bolt locations of the bridge bearings. The quality of these holes is critical to ensuring a proper connection between the bridge bearings and the bearing pads. Therefore, the quality of the holes is an important component in ensuring the bridge connection. However, there are still some problems with the formwork currently used in the construction of bridge bearing pads:

[0003] The main shortcomings identified are as follows:

[0004] 1. Concrete needs to be vibrated during pouring. Traditional fixing methods can cause the reserved hole position to shift due to vibration and other reasons, which is not easy to detect.

[0005] 2. Demolding of pre-drilled hole molds is usually carried out when the concrete is initially set. Demolding too early will cause hole misalignment, hole deformation and damage to the hole wall. Demolding too late will cause the mold to stick to the concrete and be unable to be demolded. In such cases, demolding can only be done by destroying the mold, which makes it impossible to guarantee the efficiency of traditional mold reuse.

[0006] When the above-mentioned defects occur, according to the high-speed railway quality acceptance specifications, the only solution is to remove the bearing pad stone and recast it, resulting in a serious waste of resources. Summary of the Invention

[0007] To address the aforementioned problems, this invention provides a high-speed railway bridge bearing pad stone template and construction method using compressed air demolding, employing the following technical solution:

[0008] A high-speed railway bridge bearing pad stone formwork using compressed air demolding, comprising:

[0009] Pad stone formwork;

[0010] A fixing unit is connected to the pad stone template to divide the interior of the pad stone template into multiple fixed areas;

[0011] Multiple pre-drilled hole positioning frames are provided, each of which corresponds to one of the multiple fixed areas and is connected to the pad stone template.

[0012] Multiple pre-drilled hole molds are provided, and each of the pre-drilled hole molds is correspondingly set with a pre-drilled hole positioning frame and connected to the pre-drilled hole positioning frame. Multiple air holes are arranged longitudinally inside the pre-drilled hole mold. During demolding, an air pump is connected to the air holes of the pre-drilled hole mold to inject compressed air into the air holes of the pre-drilled hole mold to achieve compressed air demolding.

[0013] Furthermore, the fixing unit includes multiple fixing plates and multiple fixing brackets; the multiple fixing plates are disposed on the top of the pad stone template and connected to the pad stone template to divide the top of the pad stone template into multiple fixing areas;

[0014] Multiple fixed brackets are provided in a one-to-one correspondence with multiple fixed areas and are connected to the fixed plate and / or pad stone template to divide the fixed area into multiple sub-areas;

[0015] Multiple pre-drilled hole positioning frames are provided in one-to-one correspondence with multiple sub-regions and are connected to the fixed bracket.

[0016] Furthermore, the fixing bracket includes a first fixing bracket and a second fixing bracket; the first fixing bracket and the second fixing bracket are connected to form a cross-shaped structure to divide the fixing area into four sub-areas; both ends of the first fixing bracket are respectively connected to the pad stone template; one end of the second fixing bracket is connected to the fixing plate, and the other end is connected to the pad stone template.

[0017] One side wall of the pre-drilled hole positioning bracket is connected to the first fixed bracket, and the other side wall is connected to the second fixed bracket; wherein the two side walls are arranged adjacent to each other.

[0018] Furthermore, the first fixed bracket and the second fixed bracket are an integral structure; both the first fixed bracket and the second fixed bracket are provided with scale lines to determine the fixed position of the pre-drilled hole positioning bracket.

[0019] Furthermore, each of the fixed areas is provided with four pre-drilled hole positioning frames; the four pre-drilled hole positioning frames are arranged one-to-one in the four sub-areas and are connected in sequence to the first fixed bracket and the second fixed bracket to form a ring structure.

[0020] Furthermore, the reserved hole positioning frame has a U-shaped structure; a first connecting plate is connected to the first side wall of the reserved hole positioning frame; a second connecting plate is connected to the second side wall of the reserved hole positioning frame; wherein, the first side wall and the second side wall are arranged adjacent to each other.

[0021] The first connecting plate and the second connecting plate of the four pre-drilled hole positioning frames are connected to the first fixed bracket and the second fixed bracket in sequence, so that the four pre-drilled hole positioning frames form a ring structure.

[0022] Furthermore, one end of the pre-drilled hole mold is engaged in the pre-drilled hole positioning frame, and the other end extends towards the bottom of the pad stone template.

[0023] Furthermore, the pre-drilled hole mold is cylindrical.

[0024] Furthermore, a construction method for a high-speed railway bridge bearing pad stone formwork using compressed air demolding is characterized in that, for any of the above-mentioned methods, the construction method for a high-speed railway bridge bearing pad stone formwork using compressed air demolding includes the following steps:

[0025] S1. When using the high-speed railway bridge bearing pad stone template, first measure and mark the bearing pad stone points. Then, use the inner mold of the pad stone template to assemble and reinforce the bearing pad stone points perpendicularly. After the pad stone template is reinforced, install the fixing plate and the fixed bracket with scale lines in sequence. After installation, mark the position on the fixed bracket with scale lines according to the design.

[0026] S2. Install individual pre-drilled hole positioning frames, and install multiple pre-drilled hole positioning frames one by one in multiple sub-areas. During installation and positioning, double-check the design dimensions. After the check is correct, fix the frame.

[0027] S3. After the pre-drilled hole positioning frame is fixed, install the pre-drilled hole mold that is demolded using compressed air. Before installing the pre-drilled hole mold, use paper to seal the air holes at the bottom and evenly apply release agent to the outer wall of the pre-drilled hole mold. After completion, embed the pre-drilled hole positioning frame.

[0028] S4. Repeat step S3 to install each reserved hole mold repeatedly, so that multiple reserved hole molds are installed one-to-one in the multiple reserved hole positioning frames.

[0029] S5. After installation, check the reserved hole positions of the reserved hole mold and the reinforcing bolts of the pad stone template to prepare for concrete pouring: After completing the above steps, concrete can be poured. After the concrete reaches a certain strength, the reserved hole mold can be demolded using compressed air. When demolding, use an air pump connected to the top of the reserved hole mold to inject compressed air into the air hole at the top of the reserved hole mold. Under pressure, the reserved hole mold separates from the concrete in the pad stone template, and the concrete forms a hole.

[0030] Beneficial effects:

[0031] (1) The present invention provides a high-speed railway bridge bearing pad stone template using compressed air demolding. By adding a fixed bracket with scale and a separate reserved hole positioning frame to the template, the efficiency of positioning the reserved hole position is improved, avoiding the risk of hole deviation during concrete vibration. It can achieve the purpose of quickly checking and correcting the hole position when hole deviation occurs.

[0032] (2) The present invention provides a high-speed railway bridge bearing pad stone template using compressed air demolding. By using a separate pre-drilled hole positioning frame for fixing, it solves the problem of traditional pre-drilled holes not being firmly fixed and not being reusable, effectively solving the fixing problem and ensuring the finished product quality and reusability of the pad stone pre-drilled holes.

[0033] (3) The present invention provides a construction method for high-speed railway bridge bearing pad stone formwork using compressed air demolding. By using compressed air demolding after the concrete strength reaches a certain level, the problem of pre-reserved hole misalignment, hole deformation and hole wall damage caused by demolding too early is avoided. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the high-speed railway bridge bearing pad stone template using compressed air demolding according to the present invention.

[0035] Figure 2 This is a diagram showing the arrangement of anchor bolt holes for the pier stone bearing of the high-speed railway bridge bearing pad stone template using compressed air demolding according to the present invention.

[0036] Figure 3 This is a schematic diagram of the fixed support structure of the high-speed railway bridge bearing pad stone template using compressed air demolding according to the present invention;

[0037] Figure 4 This is a schematic diagram of the pre-drilled hole positioning frame of the high-speed railway bridge bearing pad stone template using compressed air demolding according to the present invention.

[0038] Figure 5 This is a schematic diagram of the connection structure between the pre-reserved hole mold and the pre-reserved hole positioning frame of the high-speed railway bridge bearing pad stone template using compressed air demolding according to the present invention.

[0039] Figure 6 This is a schematic diagram of the high-speed railway bridge bearing pad stone template in step S1 of Example 2;

[0040] Figure 7 This is a schematic diagram of the high-speed railway bridge bearing pad stone template in step S2 of Example 2;

[0041] Figure 8 This is a schematic diagram of the high-speed railway bridge bearing pad stone template in step S3 of Example 2;

[0042] Figure 9 This is a schematic diagram of the high-speed railway bridge bearing pad stone template in step S4 of Example 2;

[0043] Among them, 1. Pad stone template; 2. Pre-drilled hole mold; 3. Pre-drilled hole positioning frame; 4. Fixing plate; 5. Fixing bracket; 6. Support pad stone point; 7. Scale line; 8. First connecting plate; 9. Second connecting plate; 10. First fixing bracket; 11. Second fixing bracket. Detailed Implementation

[0044] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below.

[0045] Example 1

[0046] Reference Figures 1 to 5 A high-speed railway bridge bearing pad stone formwork using compressed air demolding, comprising:

[0047] Pad stone template 1;

[0048] A fixing unit is connected to the pad stone template 1 to divide the interior of the pad stone template 1 into multiple fixing areas;

[0049] Multiple pre-drilled hole positioning frames 3 are set one-to-one with multiple fixed areas and connected to the pad stone template 1;

[0050] Multiple pre-drilled hole molds 2 are provided, and multiple pre-drilled hole positioning frames 3 are set one-to-one and connected to the pre-drilled hole positioning frames 3. Multiple air holes are arranged longitudinally inside the pre-drilled hole molds 2. When demolding, an air pump is connected to the air holes of the pre-drilled hole molds 2 to inject compressed air into the air holes of the pre-drilled hole molds 2 to achieve compressed air demolding.

[0051] In this embodiment, the fixing unit includes multiple fixing plates 4 and multiple fixing brackets 5; the multiple fixing plates 4 are disposed on the top of the pad stone template 1 and connected to the pad stone template 1 to divide the top of the pad stone template 1 into multiple fixing areas.

[0052] Multiple fixed brackets 5 are set one-to-one with multiple fixed areas and are connected to fixed plates 4 and / or pad stone templates 1 to divide the fixed area into multiple sub-areas;

[0053] The anchor bolt hole layout diagram for the bridge pier bearings defines the fixing area; such as... Figure 2 As shown, two fixed areas are set on the bearing pad stone template of a high-speed railway bridge.

[0054] Multiple pre-drilled hole positioning frames 3 are set one-to-one with multiple sub-areas and connected to fixed brackets 5.

[0055] In this embodiment, the fixing bracket 5 includes a first fixing bracket 10 and a second fixing bracket 11; the first fixing bracket 10 and the second fixing bracket 11 are connected to form a cross-shaped structure to divide the fixing area into four sub-areas; the two ends of the first fixing bracket 10 are respectively connected to the pad stone template 1; one end of the second fixing bracket 11 is connected to the fixing plate 4, and the other end is connected to the pad stone template 1.

[0056] One side wall of the pre-drilled hole positioning bracket 3 is connected to the first fixed bracket 10, and the other side wall is connected to the second fixed bracket 11; wherein the two side walls are arranged adjacent to each other.

[0057] like Figure 2 As shown, a high-speed railway bridge bearing pad stone template is provided with two fixed areas, and each fixed area is divided into four sub-areas by a first fixed bracket 10 and a second fixed bracket 11.

[0058] In this embodiment, the first fixed bracket 10 and the second fixed bracket 11 are an integral structure; both the first fixed bracket 10 and the second fixed bracket 11 are provided with scale lines 7 to determine the fixed position of the pre-drilled hole positioning bracket 3.

[0059] In this embodiment, four pre-drilled hole positioning frames 3 are provided in each fixed area; the four pre-drilled hole positioning frames 3 are arranged one-to-one in the four sub-areas and are connected to the first fixed bracket 10 and the second fixed bracket 11 in sequence to form a ring structure.

[0060] In this embodiment, the pre-drilled hole positioning frame 3 has a U-shaped structure; a first connecting plate 8 is connected to the first side wall of the pre-drilled hole positioning frame 3; a second connecting plate 9 is connected to the second side wall of the pre-drilled hole positioning frame 3; wherein the first side wall and the second side wall are arranged adjacent to each other.

[0061] The first connecting plate 8 and the second connecting plate 9 of the four pre-drilled hole positioning frames 3 are connected to the first fixed bracket 10 and the second fixed bracket 11 in sequence, so that the four pre-drilled hole positioning frames 3 form a ring structure.

[0062] One end of the first connecting plate 8 is connected to the first fixed bracket 10 or the second fixed bracket 11, and the other end is connected to the first side wall; a second connecting plate 9 is connected to the second side wall of the pre-drilled hole positioning frame 3; one end of the second connecting plate 9 is connected to the first fixed bracket 10 or the second fixed bracket 11, and the other end is connected to the second side wall; so that the four pre-drilled hole positioning frames 3 form a ring structure on the first fixed bracket 10 and the second fixed bracket 11.

[0063] Preferably, the pad stone template 1, the separate pre-drilled hole positioning frame 3, the fixing plate 4, and the fixing bracket 5 are all made of aluminum template. Compared with traditional templates, aluminum has the characteristics of being lightweight, high-strength, and not easy to rust.

[0064] The above technical solution enables fast and accurate positioning of the reserved hole by using a separate pre-drilled hole positioning bracket 3 and a fixed bracket 5 with scale lines. During the process, it is possible to check whether any deviation has occurred. Furthermore, the bolt fixing method allows for reuse and avoids material waste compared to the traditional fixing method.

[0065] In this embodiment, one end of the pre-drilled hole mold 2 is engaged in the pre-drilled hole positioning frame 3, and the other end extends toward the bottom of the pad stone template 1.

[0066] In this embodiment, the pre-drilled hole mold 2 is cylindrical.

[0067] Through the above technical solution, the pre-reserved hole mold 2 using compressed air demolding can be demolded after the concrete reaches a certain strength. Using air demolding can ensure the integrity of the pre-reserved hole to the greatest extent and not damage the hole wall. In addition, the air demolding mold has the characteristics of being fast and easy to use.

[0068] Example 2

[0069] A construction method for high-speed railway bridge bearing pad stone formwork using compressed air demolding, employing the method described in Example 1, includes the following steps:

[0070] S1. Using the high-speed railway bridge bearing pad stone template 1, first measure and mark the bearing pad stone point 6. Use the inner mold of the pad stone template 1 perpendicular to the bearing pad stone point 6 for assembly and reinforcement. After the pad stone template 1 is reinforced, install the fixing plate 4 and the fixing bracket 5 with scale lines 7 in sequence. After installation, mark the position on the fixing bracket 5 with scale lines 7 according to the design.

[0071] S2. Install individual pre-drilled hole positioning brackets 3, and install multiple pre-drilled hole positioning brackets 3 one by one in multiple sub-areas. During installation and positioning, double-check the design dimensions. After the check is correct, fix the brackets.

[0072] S3. After the pre-drilled hole positioning frame 3 is fixed, install the pre-drilled hole mold 2 which is demolded using compressed air. Before installing the pre-drilled hole mold 2, use paper to seal the air holes at the bottom and evenly apply release agent to the outer wall of the pre-drilled hole mold 2. After completion, embed the pre-drilled hole positioning frame 3.

[0073] S4. Repeat the operation of S3, and repeatedly install each reserved hole mold 2 so that multiple reserved hole molds 2 are installed one-to-one in multiple reserved hole positioning frames 3.

[0074] S5. After installation, check the reserved hole positions of the reserved hole mold and the reinforcing bolts of the pad stone template to prepare for concrete pouring: After completing the above steps, concrete can be poured. After the concrete reaches a certain strength, the reserved hole mold 2, which is demolded using compressed air, can be demolded. When demolding, use an air pump connected to the top of the reserved hole mold 2 and inject compressed air into the air hole at the top of the reserved hole mold 2. Under pressure, the reserved hole mold 2 separates from the concrete in the pad stone template 1, and the concrete forms a hole.

[0075] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A high-speed railway bridge bearing pad stone template using compressed air demolding, characterized in that, include: Pad stone formwork; A fixing unit is connected to the pad stone template to divide the interior of the pad stone template into multiple fixed areas; Multiple pre-drilled hole positioning frames are provided, each of which corresponds to one of the multiple fixed areas and is connected to the pad stone template. Multiple pre-drilled hole molds are provided, and each of the pre-drilled hole molds is correspondingly set with a pre-drilled hole positioning frame and connected to the pre-drilled hole positioning frame. Multiple air holes are arranged longitudinally inside the pre-drilled hole molds. During demolding, an air pump is connected to the air holes of the pre-drilled hole molds to inject compressed air into the air holes of the pre-drilled hole molds, so that the pre-drilled hole molds are separated from the concrete in the pad stone template, thereby realizing compressed air demolding. The fixing unit includes multiple fixing plates and multiple fixing brackets; the multiple fixing plates are disposed on the top of the pad stone template and connected to the pad stone template to divide the top of the pad stone template into multiple fixing areas; Multiple fixed brackets are provided in a one-to-one correspondence with multiple fixed areas and are connected to the fixed plate and / or pad stone template to divide the fixed area into multiple sub-areas; Multiple pre-drilled positioning frames are provided one-to-one with multiple sub-regions and are connected to the fixed bracket; The fixing bracket includes a first fixing bracket and a second fixing bracket; the first fixing bracket and the second fixing bracket are connected to form a cross-shaped structure to divide the fixing area into four sub-areas; both ends of the first fixing bracket are respectively connected to the pad stone template; one end of the second fixing bracket is connected to the fixing plate, and the other end is connected to the pad stone template. One side wall of the pre-drilled hole positioning bracket is connected to the first fixed bracket, and the other side wall is connected to the second fixed bracket; wherein the two side walls are arranged adjacent to each other; Four pre-drilled hole positioning frames are provided in each of the fixed areas; the four pre-drilled hole positioning frames are arranged one-to-one in the four sub-areas and are connected to the first fixed bracket and the second fixed bracket in sequence to form a ring structure; The pre-drilled hole positioning frame has a U-shaped structure; a first connecting plate is connected to the first side wall of the pre-drilled hole positioning frame; a second connecting plate is connected to the second side wall of the pre-drilled hole positioning frame; wherein the first side wall and the second side wall are arranged adjacent to each other; The first connecting plate and the second connecting plate of the four pre-drilled hole positioning frames are connected to the first fixed bracket and the second fixed bracket in sequence, so that the four pre-drilled hole positioning frames form a ring structure.

2. The high-speed railway bridge bearing pad stone template using compressed air demolding as described in claim 1, characterized in that, The first fixed bracket and the second fixed bracket are an integral structure; both the first fixed bracket and the second fixed bracket are provided with scale lines to determine the fixed position of the pre-drilled hole positioning bracket.

3. The high-speed railway bridge bearing pad stone template using compressed air demolding as described in claim 1, characterized in that, One end of the pre-drilled hole mold is engaged in the pre-drilled hole positioning frame, and the other end extends toward the bottom of the pad stone template.

4. The high-speed railway bridge bearing pad stone template using compressed air demolding as described in claim 3, characterized in that, The pre-drilled hole mold is cylindrical.

5. A construction method for high-speed railway bridge bearing pad stone formwork using compressed air demolding, characterized in that, A construction method for a high-speed railway bridge bearing pad stone formwork using compressed air demolding, as provided in any one of claims 1 to 4, the method comprising the following steps: S1. When using the high-speed railway bridge bearing pad stone template, first measure and mark the bearing pad stone points. Then, use the inner mold of the pad stone template to assemble and reinforce the bearing pad stone points perpendicularly. After the pad stone template is reinforced, install the fixing plate and the fixed bracket with scale lines in sequence. After installation, mark the position on the fixed bracket with scale lines according to the design. S2. Install individual pre-drilled hole positioning frames, and install multiple pre-drilled hole positioning frames one by one in multiple sub-areas. During installation and positioning, double-check the design dimensions. After the check is correct, fix the frame. S3. After the pre-drilled hole positioning frame is fixed, install the pre-drilled hole mold that is demolded using compressed air. Before installing the pre-drilled hole mold, use paper to seal the air holes at the bottom and evenly apply release agent to the outer wall of the pre-drilled hole mold. After completion, embed the pre-drilled hole positioning frame. S4. Repeat step S3 to install each reserved hole mold repeatedly, so that multiple reserved hole molds are installed one-to-one in the multiple reserved hole positioning frames. S5. After installation, check the reserved hole positions of the reserved hole mold and the reinforcing bolts of the pad stone template to prepare for concrete pouring: After completing the above steps, concrete can be poured. After the concrete reaches a certain strength, the reserved hole mold can be demolded using compressed air. When demolding, use an air pump connected to the top of the reserved hole mold to inject compressed air into the air hole at the top of the reserved hole mold. Under pressure, the reserved hole mold separates from the concrete in the pad stone template, and the concrete forms a hole.

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