UHPC (Ultra High Performance Concrete) reinforced rectangular pier column mold with mold erecting and steam curing functions

Abstract

The utility model relates to the field of building construction and the technical field of plastic molds, and discloses a UHPC (Ultra High Performance Concrete) reinforced rectangular pier column mold with mold erecting and steam curing functions, which comprises a bottom-layer main body mold, a main body mechanism is arranged at the top of the bottom-layer main body mold, and a cover plate mechanism is arranged at the top of the main body mechanism; the main body mechanism comprises an inner side mold plate, the inner side mold plate is arranged in the bottom layer main body mold, a first sliding groove is formed in the bottom of the bottom layer main body mold, a movable mold plate is clamped in the first sliding groove, a water / air outlet is formed in one side of the bottom of the bottom layer main body mold, and a first buckle is fixedly connected to the top of the bottom layer main body mold. According to the mold erecting and water-permeable moisturizing maintenance plastic mold for the square bridge pier, the arranged main body mechanism, the movable mold plate and the movable bolts are used in cooperation, the water / gas discharging amount is adjusted through the position of the water / gas discharging opening, hot water maintenance and steam maintenance can be achieved, and implementation of mold erecting and maintenance operation is facilitated.

Description

Technical Field

[0001] The utility model relates to the fields of building construction and plastic mold technology, in particular to a UHPC reinforced rectangular pier column mold with both formwork support and steam curing functions. Background Art

[0002] In recent years, with economic development, urbanization has gradually accelerated, and transportation demand has increased dramatically, leading to a sharp increase in the number of high-rise buildings and highway bridges. However, these infrastructures can be damaged by factors such as climate change, natural disasters, and vibration and impact caused by vehicles. To ensure the normal use of these infrastructures, strengthening and maintaining these infrastructures can effectively address the damage to the infrastructure. Ultra-high performance concrete (UHPC) has ultra-high compressive strength, ultra-high durability, and ultra-high toughness. It can replace ordinary concrete to increase the cross-section of reinforced concrete columns. This not only increases the space utilization of the infrastructure, but also improves the compressive strength of the infrastructure.

[0003] However, in the actual reinforcement process of damaged concrete columns, conventional reinforcement formwork presents challenges such as inconvenient formwork support, high technical requirements, unstable long-term effectiveness, complex removal, and environmental impact. This can increase labor time and costs. Furthermore, UHPC curing is difficult. If curing is not timely or the temperature does not reach the designed curing temperature, the UHPC strength will not reach the designed value, and quality defects such as cracking and surface dehydration will occur during the UHPC hardening process. This can affect the load-bearing capacity of the reinforced concrete structure.

[0004] Based on this, the present invention designs a formwork and water-permeable and moisture-retaining maintenance mold for rectangular bridge piers. The device is convenient for formwork support and has both construction and maintenance functions. Utility Model Content

[0005] The purpose of the present invention is to provide a UHPC reinforced rectangular pier column mold with both formwork support and steam curing functions, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a UHPC reinforced rectangular pier column mold with both formwork support and steam curing functions, comprising a bottom main body mold, a main body mechanism is provided on the top of the bottom main body mold, and a cover plate mechanism is provided on the top of the main body mechanism;

[0007] The main body mechanism includes an inner template, which is arranged inside the bottom main body mold, a slide groove 1 is provided at the bottom of the bottom main body mold, a movable template is clamped inside the slide groove 1, a water outlet / air outlet is provided on one side of the bottom of the bottom main body mold, a buckle 1 is fixedly connected to the top of the bottom main body mold, the top of the buckle 1 is clamped to the upper main body mold, a slot 1 is provided at the bottom end of the upper main body mold, a slide groove 2 is provided on one side of the bottom of the upper main body mold, a buckle 2 is fixedly connected to the top of the upper main body mold, the surface of the upper main body mold and the surface of the bottom main body mold are both threadedly connected with movable bolts, a rubber ring is sleeved on the surface of the movable bolts, and the side surfaces of the bottom main body mold and the side surfaces of the upper main body mold are both threadedly connected with connecting bolts.

[0008] Preferably, there are two bottom-body molds, and a hole one is opened on the surface of the inner template. The bottom-body mold and the movable template are locked by a slide groove one. In addition, the movable template is stuck in the slide groove two and also moves through the slide groove two, which can also avoid the phenomenon of misalignment and avoid uneven thickness of the cast. In addition, the hole one of the bottom-body mold coincides with the protrusion of the movable template.

[0009] Preferably, the bottom of the upper main body mold is provided with a water / air outlet, the number of the water / air outlets on each side is two rows, the number of the upper main body molds on each layer is two, and the upper main body mold and the movable template are positioned in two phases through a slide groove.

[0010] Preferably, a second inner template is provided inside the upper main body mold, and a second hole is opened in the second inner template. The second hole of the upper main body mold is consistent with the protrusion of the movable template.

[0011] Preferably, the connecting bolts have two layers, the inner side of the upper main body mold and the inner side of the lower main body mold are respectively threadedly connected to the surface of each layer of connecting bolts. In addition, the rubber ring can prevent water vapor or hot air from escaping from the holes opened by the movable bolts, because ultra-high performance concrete (UHPC) requires hot water curing or steam curing.

[0012] Preferably, the cover mechanism includes a top cover, which is arranged on the top of the upper main body mold, and two card slots are provided at the bottom end of the top cover. The top of the top cover is fixedly connected with a water inlet / air pipe, and the bottom end of the side of the bottom main body mold is fixedly connected with a water outlet / air pipe. There are two top cover plates, and the top cover plate is provided with a water inlet / air port, which is used in conjunction with a hot water device or a steam engine through the water inlet / air pipe.

[0013] Preferably, the interior of the second card slot matches the top of the second buckle, so as to facilitate the engagement between the second card slot and the second buckle.

[0014] Compared with the existing technology, the utility model provides a UHPC reinforced rectangular pier column mold with both formwork and steam curing functions, which has the following beneficial effects:

[0015] This plastic mold for supporting and concurrently performing water-permeable and moisture-retaining curing of square bridge piers utilizes a main body mechanism, utilizes a movable template to be combined with a bottom main mold or an upper main mold to be combined with poured UHPC, and is used in conjunction with movable bolts. The amount of water / gas discharge is adjusted by the position of the water / gas outlet. This device can be cured by both hot water and steam, facilitating the implementation of formwork and curing operations.

[0016] This plastic mold used for supporting and maintaining square bridge piers, combined with ultra-high performance concrete (UHPC), can absorb a large amount of energy compared to ordinary concrete and has excellent toughness, durability, wear resistance, impact resistance, and explosion resistance. There is a gap between each layer of reinforced ultra-high strength concrete (UHPC), which can effectively prevent the propagation of cracks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work.

[0018] Figure 1 This is a three-dimensional diagram of the overall structure of the utility model;

[0019] Figure 2 This is a three-dimensional cross-sectional view of the overall structure of the utility model;

[0020] Figure 3 This is a three-dimensional diagram of the upper main body mold of the utility model;

[0021] Figure 4 This is a three-dimensional exploded view of the parts of the utility model;

[0022] Figure 5 This is a three-dimensional cross-sectional view of the bottom body mold of the utility model;

[0023] Figure 6 This is a three-dimensional diagram of the sliding bolt of the utility model.

[0024] In the figure: 1. Bottom main mold; 2. Main body mechanism; 21. Inner template; 22. Slot 1; 23. Movable template; 24. Water / air outlet; 25. Buckle 1; 26. Upper main mold; 261. Slot 1; 262. Slot 2; 263. Buckle 2; 27. Movable bolt; 28. Connecting bolt; 29. ​​Rubber ring; 3. Cover mechanism; 31. Top cover; 32. Slot 2; 33. Water / air inlet pipe; 34. Water / air outlet pipe. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0027] The utility model provides the following technical solutions:

[0028] Example 1: Combination Figures 2 to 6 A UHPC reinforced rectangular pier column mold with both formwork and steam curing functions includes a bottom main body mold 1, characterized in that: a main body mechanism 2 is provided on the top of the bottom main body mold 1, and a cover plate mechanism 3 is provided on the top of the main body mechanism 2;

[0029] The main body mechanism 2 includes an inner template 21, which is arranged inside the bottom main body mold 1. A slide groove 22 is provided at the bottom of the bottom main body mold 1. A movable template 23 is connected to the slide groove 22. A water outlet / air port 24 is provided on one side of the bottom of the bottom main body mold 1. A buckle 25 is fixedly connected to the top of the bottom main body mold 1. The top of the buckle 25 is connected to the upper main body mold 26. A slot 261 is provided at the bottom of the upper main body mold 26. A slide groove 262 is provided on one side of the bottom of the upper main body mold 26. A buckle 263 is fixedly connected to the top of the upper main body mold 26. The surface of the upper main body mold 26 The surface of the bottom main mold 1 is threadedly connected with a movable bolt 27, and a rubber ring 29 is sleeved on the surface of the movable bolt 27. The side of the bottom main mold 1 and the side of the upper main mold 26 are threadedly connected with a connecting bolt 28. There are two bottom main molds 1, and a hole one is opened on the surface of the inner template 21. The bottom main mold 1 and the movable template 23 are locked by a slide groove 22. The bottom of the upper main mold 26 is provided with a water / air outlet, and the number of water / air outlets on each side is two rows. There are two upper main molds 26 on each layer, and the upper main mold 26 and the movable template 23 are locked by a slide groove 262.

[0030] Furthermore, an inner template 2 is provided inside the upper main body mold 26, and a hole 2 is opened in the inner template 2. The hole 2 of the upper main body mold 26 coincides with the protrusion of the movable template 23. The connecting bolt 28 has two layers, the inner side of the upper main body mold 26 and the inner side of the bottom main body mold 1 are respectively threadedly connected to the surface of each layer of connecting bolts 28. The movable template is combined with the bottom main body mold or the upper main body mold is combined with the cast UHPC. The movable template is used in conjunction with the movable bolts, and the water / gas volume is adjusted by the position of the water / gas port. This device can be cured by hot water or steam, which facilitates the implementation of formwork and curing operations.

[0031] Example 2: See Figure 1-6 On the basis of Example 1, the cover mechanism 3 is further obtained to include a top cover 31, which is arranged on the top of the upper main body mold 26, and a second card slot 32 is provided at the bottom end of the top cover 31, and a water inlet / air pipe 33 is fixedly connected to the top of the top cover 31, and a water outlet / air pipe 34 is fixedly connected to the bottom end of the side of the bottom main body mold 1.

[0032] Furthermore, the interior of the second slot 32 matches the top of the second clip 263. Combined with the use of ultra-high performance concrete (UHPC), compared to ordinary concrete, it can absorb a large amount of energy and has excellent toughness, durability, wear resistance, impact resistance, and explosion resistance. There is a gap between each layer of reinforced ultra-high strength concrete (UHPC), which can effectively prevent the propagation of cracks.

[0033] The construction method and use steps of the formwork and water-permeable and moisturizing curing formwork for rectangular bridge piers are as follows:

[0034] S1. Prefabricated mold: Design the mold size and prefabricate the mold size according to the requirements, actual site conditions and reinforcement requirements;

[0035] S2. Cleaning the site and old bridge piers: To facilitate construction, the site needs to be leveled. To ensure the bonding effect between ultra-high performance concrete (UHPC) and the square bridge piers and to ensure effective reinforcement, the surface of the old bridge piers to be reinforced should be roughened and cleaned to remove dust, oil, peeling and loose layers, as well as some possible harmful substances.

[0036] S3. Wetting treatment: The concrete surface needs to be moderately moistened, but excessive moisture should be avoided as this may lead to a decrease in interfacial adhesion. Wetting treatment helps to improve the adhesion between the old concrete and ultra-high performance concrete (UNPC);

[0037] S4. Mould installation and pouring: transport the prefabricated mould to the construction site. In order to ensure that the mobile formwork can be moved smoothly and demoulded during curing, and to ensure that it does not get stuck and prevent the curing process from proceeding smoothly, it is necessary to apply a release agent on the innermost side of the bottom main mould and the upper main mould, and use connecting bolts to fit the two bottom main moulds and the mobile formwork. At this time, the mobile formwork and the inner formwork of the bottom main mould are in a fitted state. Pour ultra-high performance concrete (UHPC) between the inner formwork of the bottom main mould and the pier column. After the pouring height is consistent with the height of the inner formwork, level it, and then install the upper main mould and the mobile formwork. At this time, the mobile formwork and the inner formwork of the upper main mould are in a fitted state. Pour ultra-high performance concrete (UHPC) again. After the pouring height is consistent with the height of the inner formwork, level it again, and repeat this operation. That is, the upper main mould is designed according to the designed size and the height to be reinforced. Finally, install the top cover plate;

[0038] Note: There are spaces between each layer of reinforced ultra-high strength concrete (UHPC) to prevent crack propagation.

[0039] The reason for this is that, compared to ordinary concrete, ultra-high-performance concrete (UHPC) can absorb a great deal more energy and possesses superior toughness, durability, wear resistance, impact resistance, and explosion resistance. Consequently, UHPC is a brittle material. Cracks in brittle materials develop rapidly, and crack propagation paths can bend, micro-bifurcate, and macro-bifurcate. Therefore, to prevent crack propagation, each layer of reinforced UHPC needs to be separated.

[0040] S5. Curing: After the ultra-high performance concrete (UHPC) solidifies, separate the movable formwork on each side of each layer from the inner formwork by moving bolts. Then, introduce hot water or steam for curing. At this time, the amount of water (gas) can be adjusted by moving bolts and the movable formwork, which can effectively control the curing conditions and ensure that the ultra-high performance concrete (UHPC) has sufficient strength.

[0041] S6. Maintenance completed: After maintenance is completed, the mold will be removed and the reinforcement construction work of the single pier will be completed.

[0042] In actual operation, when this device is used, the upper main mold (26) is covered on the bottom main mold (1), and the top cover plate (31) is covered on the upper main mold (26) for superposition. In addition, the movable template (23) is stuck in the second slide groove (262) and is also moved through the second slide groove (262), which can also avoid the phenomenon of dislocation and avoid uneven thickness of the cast. In addition, the hole one of the bottom main mold (1) coincides with the protrusion of the movable template 23, and the rubber ring (29) can prevent water vapor or hot air from escaping from the hole opened by the movable bolt (27). Because ultra-high performance concrete (UHPC) requires hot water curing or steam curing, the top cover plate is provided with a water inlet / air port, which is used in conjunction with the hot water device or steam engine through the water inlet / air pipe 33.

[0043] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

1. A UHPC reinforced rectangular pier column mold with both formwork and steam curing functions, comprising a bottom main body mold (1), characterized in that: A main body mechanism (2) is provided on the top of the bottom main body mold (1), and a cover plate mechanism (3) is provided on the top of the main body mechanism (2); The main body structure (2) includes an inner template (21), which is arranged inside the bottom main body mold (1), a slide groove (22) is provided at the bottom of the bottom main body mold (1), a movable template (23) is clamped inside the slide groove (22), a water outlet / air outlet (24) is provided on one side of the bottom of the bottom main body mold (1), a buckle (25) is fixedly connected to the top of the bottom main body mold (1), the top of the buckle (25) is clamped to the upper main body mold (26), and the upper main body mold A first card slot (261) is provided at the bottom end of the upper main body mold (26), a second slide slot (262) is provided on one side of the bottom of the upper main body mold (26), a second buckle (263) is fixedly connected to the top of the upper main body mold (26), the surface of the upper main body mold (26) and the surface of the bottom main body mold (1) are both threadedly connected with a movable bolt (27), a rubber ring (29) is sleeved on the surface of the movable bolt (27), and the side of the bottom main body mold (1) and the side of the upper main body mold (26) are both threadedly connected with a connecting bolt (28).

2. The UHPC reinforced rectangular pier column mold with both formwork and steam curing functions according to claim 1, characterized in that: The number of the bottom main body molds (1) is two, a hole one is opened on the surface of the inner template (21), and the bottom main body mold (1) and the movable template (23) are locked in position through a slide groove one (22).

3. The UHPC reinforced rectangular pier column mold with both formwork and steam curing functions according to claim 1, characterized in that: The bottom of the upper main body mold (26) is provided with a water / air outlet, and the number of the water / air outlets on each side is two rows. The number of the upper main body mold (26) on each layer is two, and the upper main body mold (26) and the movable template (23) are locked in position through the second slide groove (262).

4. The UHPC reinforced rectangular pier column mold with both formwork and steam curing functions according to claim 1, characterized in that: The upper main body mold (26) is provided with an inner template 2, and the inner template 2 is provided with a hole 2.

5. The UHPC reinforced rectangular pier column mold with both formwork and steam curing functions according to claim 1, characterized in that: The connecting bolts (28) have two layers, the upper and lower layers. The inner side of the upper layer main body mold (26) and the inner side of the bottom layer main body mold (1) are respectively threadedly connected to the surface of each layer of the connecting bolts (28).

6. The UHPC reinforced rectangular pier column mold with both formwork and steam curing functions according to claim 5, characterized in that: The cover plate mechanism (3) comprises a top cover plate (31), the top cover plate (31) being arranged on the top of the upper main body mold (26), a second card slot (32) being provided at the bottom end of the top cover plate (31), a water inlet / air pipe (33) being fixedly connected to the top of the top cover plate (31), and a water outlet / air pipe (34) being fixedly connected to the bottom end of the side of the bottom main body mold (1).

7. The UHPC reinforced rectangular pier column mold with both formwork and steam curing functions according to claim 6, characterized in that: The interior of the second card slot (32) matches the top of the second buckle (263).

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