Concrete pier construction method based on template anti-leakage and anti-falling

Abstract

This invention provides a concrete pier construction method based on formwork leakage and fall prevention. This method innovatively employs a grout leakage prevention technology: a grout-stopping device is installed on the bottom surface of the formwork. Because the rubber grout-stopping rod of this device has sufficient elasticity, toughness, and extensibility, it can fill the gaps between the formwork and the concrete surface through its compression properties, effectively preventing concrete grout leakage and solving the technical problem of grout leakage contaminating the pier body below during pier construction. Furthermore, this concrete pier construction method also innovatively employs a fall prevention technology: a fall prevention device is installed on the steel frame of the upper pier section. In the event of overturning and falling, the support beam of the fall prevention device crosses the steel frame, preventing the frame from falling and solving the problem of potential overturning and falling accidents during pier construction.

Description

Technical Field

[0001] This invention relates to the field of concrete pier construction technology, specifically to a concrete pier construction method based on formwork for preventing leakage and falling. Background Technology

[0002] With the development of my country's infrastructure construction, the number of newly built bridge projects is increasing. The requirements for concrete appearance quality and construction safety in these projects are becoming increasingly stringent. Appearance quality and construction safety play a crucial role in enhancing the overall project image, and this has received widespread attention, especially in urban municipal bridge construction. Concrete appearance quality and safety measures during construction have become important aspects of the construction process.

[0003] For the construction of high piers and towers in bridge engineering, climbing formwork is often used. However, due to the characteristic of climbing formwork construction, a set of formwork is reused as the formwork climbs, leading to problems such as poor bonding between the formwork and the concrete surface. This leakage of grout from the formwork affects the appearance quality of the concrete poured below, a common problem in climbing formwork construction. Furthermore, improper installation of the climbing formwork or operational errors during the climbing process can lead to safety accidents such as the climbing formwork overturning and falling.

[0004] Therefore, how to solve the problems of grout leakage from the formwork and accidental falls of the climbing formwork has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of this invention is to provide a concrete pier construction method based on formwork leakage prevention and fall prevention, so as to solve the problems of formwork leakage and accidental fall of climbing formwork.

[0006] To achieve the above objectives, the present invention provides a method for constructing concrete piers based on formwork for leak prevention and fall prevention, characterized by comprising the following steps:

[0007] Step 1: Construct the climbing formwork;

[0008] Step 2: Climbing cones are pre-embedded in the already poured lower section of the pier, and the climbing formwork is installed through these climbing cones;

[0009] Step 3: Tie the upper section of the pier reinforcement;

[0010] Step 4: Clean the template and install a grout-stopping device on the template. The grout-stopping device includes a channel steel welded to the bottom surface of the template and a rubber grout-stopping rod fixedly embedded in the channel steel. The rubber grout-stopping rod is set towards the pier column and protrudes from the working surface of the template.

[0011] Step 5: Install the template and close the template, ensuring that the bottom edge of the template fits snugly against the already poured lower section of the pier, thereby sealing the rubber grout stop bar with the already poured lower section of the pier.

[0012] Step 6: Pre-embed climbing cones in the upper section of the pier;

[0013] Step 7: Install the climbing formwork anti-fall device. The climbing formwork anti-fall device includes a "well"-shaped support frame that is supported horizontally on the steel reinforcement frame and a connecting beam connecting the "well"-shaped support frame and the climbing formwork. The "well"-shaped support frame is composed of four intersecting support beams, and both ends of each support beam are cantilevered ends extending out of the steel reinforcement frame. One end of the connecting beam is connected to the cantilevered end of the support beam, and the other end of the connecting beam is connected to the climbing formwork.

[0014] Step 8: Pour concrete into the upper section of the pier and cure it;

[0015] Step 9: Repeat steps 1-8 above to carry out the climbing formwork construction.

[0016] Preferably, the rubber anti-slurry rod is cylindrical.

[0017] Preferably, the rubber anti-grouting rod is made of polyurethane.

[0018] Preferably, after the rubber grout stop bar is embedded into the channel steel in step 4, the rubber grout stop bar protrudes 10-40mm from the working surface of the template.

[0019] Preferably, after the rubber grout stop bar is embedded into the channel steel in step 4, the rubber grout stop bar protrudes 22mm from the working surface of the template.

[0020] Preferably, the connecting beam of the fall arrestor is an H-shaped structure, which includes two columns and a crossbar connecting the two columns; it also includes a roller, which is rotatably supported between the two columns and can be rolled and hooked on the support beam, and the end of the support beam is provided with a limiting member to limit the roller.

[0021] Preferably, the climbing cone in step 6 includes an embedded plate, a high-strength screw, a climbing cone body, and mounting bolts that are fixedly connected in sequence.

[0022] The specific method for pre-embedding the climbing cone on the upper section of the pier in step 6 is as follows: the climbing cone body is fixed on the template with the installation bolts, and the embedded plate, the high-strength screw and the climbing cone body are located on the side of the template facing the pier, while the installation bolts are located on the side of the template away from the pier.

[0023] The present invention has the following beneficial effects:

[0024] As can be seen from the above technical solution, compared with the background technology, this concrete pier construction method based on formwork leakage prevention and fall prevention innovatively adopts grout leakage prevention technology, that is, a grout stopping device is installed on the bottom surface of the formwork. Since the rubber grout stopping rod of the grout stopping device has sufficient elasticity, toughness and extensibility, it can fill the gap between the formwork and the concrete surface through the compression performance of the rubber grout stopping rod, thereby effectively preventing the concrete grout from leaking down and solving the technical problem of grout leakage and contamination of the pier body below during the pier construction process.

[0025] In addition, this concrete pier construction method based on template anti-leakage and anti-fall technology also innovatively adopts anti-fall technology, that is, an anti-fall device is installed on the steel frame of the upper section of the pier. In the event of overturning and falling, the support beam of the anti-fall device is supported on the steel frame to prevent the frame from falling, thus solving the problem of overturning and falling safety accidents that are prone to occur during pier construction. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and provide explanations, but do not constitute an undue limitation of this application. In the drawings:

[0027] Figure 1 This is a schematic diagram of the construction of concrete pier columns based on template anti-leakage and anti-falling technology as described in this invention;

[0028] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0029] Figure 3 This is a schematic diagram of the assembly of the template and the grout-stopping device;

[0030] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0031] Figure 5 A schematic diagram of the slurry stopping device;

[0032] Figure 6 A schematic diagram of the installation of the grout-stopping device and the lower section of the pier.

[0033] Figure 7 A schematic diagram showing the grout-stopping device after it has been installed in place.

[0034] Figure 8 This is the front view of the fall arrestor.

[0035] Figure 9 This is a top view of the fall arrestor.

[0036] Figure 10 This is a schematic diagram of the structure where the connecting beam is hooked onto the supporting beam.

[0037] Figure 11 This is a schematic diagram of the structure for fixing the climbing cone to the template;

[0038] Attached icon number

[0039] 1-Climbing formwork; 2-Lower pier section; 3-Climbing cone; 3a-Embedded plate; 3b-High-strength bolt; 3c-Climbing cone body; 3d-Mounting bolt; 4-Reinforcing bar; 5-Formwork; 6-Channel steel; 7-Rubber grout stop bar; 8-Support beam; 9-Connecting beam; 9a-Column; 9b-Column crossbar; 9c-Roller; 10-Limiting component. Detailed Implementation

[0040] The core of this invention lies in providing a concrete pier construction method based on formwork anti-leakage and anti-fall technology. It innovatively adopts anti-leakage and anti-fall technologies, which can effectively solve the technical problem of grout leakage contaminating the pier below during pier construction, as well as the safety accident of the climbing formwork easily overturning and falling during pier construction.

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] See Figure 1 As shown in the figure, this invention discloses a construction method for concrete pier columns based on formwork leakage and fall prevention, including the following steps:

[0043] Step 1: Make climbing formwork 1, that is, make climbing formwork 1 in advance.

[0044] Step 2: Climbing cones 3 are pre-embedded on the already poured lower pier section 2, see [link / reference] Figure 2 As shown, the climbing cone 3 pre-embedded in the lower section of the pier body 2 serves as the anchor point for the climbing formwork 1, thereby fixing the climbing formwork 1.

[0045] Step 3: Tie the upper section of the pier reinforcement bars.

[0046] Step 4: Clean formwork 5, and install the grout-stopping device on formwork 5. (See below) Figure 1 , Figure 3 , Figure 4 , Figure 5 The grout-stopping device includes a channel steel 6 welded to the bottom surface of the template 5 and a rubber grout-stopping rod 7 fixedly embedded in the channel steel 6. The rubber grout-stopping rod 7 is positioned facing the pier column and protrudes from the working surface of the template 5.

[0047] Step 5, Install template 5, Close the mold, see below. Figure 6 , Figure 7 As shown, when the mold is closed, the lower opening of the template 5 fits into the already poured lower section pier 2, thereby sealing the rubber grout stop rod 7 with the already poured lower section pier 2.

[0048] Because the rubber grout stopper 7 has sufficient elasticity, toughness, and extensibility, it can fill the gap between the template 5 and the concrete surface through the compression performance of the rubber grout stopper 7, effectively preventing the technical problem of grout leakage and contamination of the lower pier body during the pouring of the upper pier body.

[0049] Step 6: Pre-embed climbing cone 3 in the upper section of the pier.

[0050] Step 7: Install the fall arrestor on the climbing formwork, see [link / reference] Figure 1 , Figure 8 , Figure 9 , Figure 10 As shown, the climbing formwork anti-fall device includes a "well"-shaped support frame that is supported horizontally on the steel reinforcement 4 skeleton and a connecting beam 9 that connects the "well"-shaped support frame to the climbing formwork 1. The "well"-shaped support frame is composed of four intersecting support beams 8, and both ends of each support beam 8 are cantilevered ends that extend out of the steel reinforcement 4 skeleton. One end of the connecting beam 9 is connected to the cantilevered end of the support beam 8, and the other end is connected to the climbing formwork 1.

[0051] When the anchorage between the climbing formwork 1 and the lower pier 2 becomes loose, i.e. when an overturning and falling situation occurs, the support beam 8 of the anti-fall device is placed on the steel reinforcement 4 skeleton, which can effectively prevent the climbing formwork 1 from falling.

[0052] Step 8: Pour concrete into the upper section of the pier and cure it.

[0053] Step 9: Repeat steps 1-8 above to carry out the climbing formwork construction.

[0054] As can be seen from the above technical solution, compared with the background technology, this concrete pier construction method based on formwork leakage prevention and fall prevention innovatively adopts grout leakage prevention technology, that is, a grout stopping device is installed on the bottom surface of the formwork 5. Since the rubber grout stopping rod 7 of the grout stopping device has sufficient elasticity, toughness and extensibility, it can fill the gap between the formwork 5 and the concrete surface through the compression performance of the rubber grout stopping rod 7, thereby effectively preventing the concrete grout from leaking down and solving the technical problem of grout leakage and contamination of the pier body below during the pier construction process.

[0055] In addition, this concrete pier construction method based on template anti-leakage and anti-fall technology also innovatively adopts anti-fall technology, that is, an anti-fall device is installed on the steel frame 4 skeleton of the upper section of the pier. When an overturning and falling situation occurs, the support beam 8 of the anti-fall device is cross-braced on the steel frame 4 skeleton to prevent the frame from falling, thus solving the problem of overturning and falling safety accidents that are prone to occur during the pier construction process.

[0056] In some specific implementation schemes, the rubber grout stopper 7 can be circular in shape, and the material of the rubber grout stopper 7 can be polyurethane.

[0057] In other specific implementation schemes, see Figure 4 , Figure 5 As shown, after the rubber grout stop rod 7 is embedded into the channel steel 6 in step 4, the distance d1 of the rubber grout stop rod 7 protruding from the working surface of the template 5 is 10-40mm. Among them, a preferred embodiment is that the rubber grout stop rod 7 protrudes from the working surface of the template 5 by 22mm.

[0058] It should be noted that the distance d1 of the rubber grout stop rod 7 protruding from the working surface of the template is 10-40mm. This is just an example of the distance of the rubber grout stop rod 7 protruding from the working surface of the template. No more specific limit is made here on the specific distance of the rubber grout stop rod 7 protruding from the working surface of the template 5.

[0059] See Figure 8 , Figure 9 , Figure 10 As shown, in some specific embodiments, the connecting beam 9 of the fall arrestor has an H-shaped structure, including two columns 9a and a crossbar 9b connecting the two columns; it also includes rollers 9c, which are rotatably supported between the two columns 9a and can be rolled and hooked onto the support beam 8. The end of the support beam 8 is provided with a limiting member 10 to limit the movement of the rollers 9c. In this way, the connecting beam 9 is hooked onto the support beam 8 by rolling, which does not affect the opening and closing of the formwork 5 and facilitates construction.

[0060] See Figure 1 , Figure 11 As shown, in step 6 above, the climbing cone 3 includes an embedded plate 3a, a high-strength bolt 3b, a climbing cone body 3c, and a mounting bolt 3d, which are sequentially fixedly connected. The specific method for pre-embedding the climbing cone on the upper pier body in step 6 is as follows: the climbing cone body 3c is fixed to the formwork 5 with the mounting bolt 3d. Furthermore, the embedded plate 3a, the high-strength bolt 3b, and the climbing cone body 3c are located on the side of the formwork facing the pier column, while the mounting bolt 3d is located on the side of the formwork 5 away from the formwork 5. During construction, the pre-embedded climbing cone 3 is fixed to the formwork 5, not to the reinforcing steel, which helps ensure the correct placement of the climbing cone. Figure 11 As shown, the pre-embedded climbing cone is fixed to the template 5 by installation bolts. After the concrete is poured, the climbing cone 3 is pre-embedded in the wall.

[0061] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0062] It should be understood that the use of terms such as "system," "device," "unit," and / or "module" in this application is merely one method of distinguishing different components, elements, parts, sections, or assemblies at different levels. However, if other terms can achieve the same purpose, they may be replaced by other expressions.

[0063] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "a," and / or "the" are not specifically singular and may include the plural. Generally, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. An element defined by the phrase "comprising an..." does not exclude the presence of other identical elements in the process, method, product, or apparatus that includes the element.

[0064] In the description of the embodiments of this application, unless otherwise stated, " / " means "or", for example, A / B can mean A or B; "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more.

[0065] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0066] If a flowchart is used in this application, it is used to illustrate the operations performed by the system according to embodiments of this application. It should be understood that the preceding or following operations are not necessarily performed in exact order. Instead, the steps can be processed in reverse order or simultaneously. Furthermore, other operations can be added to these processes, or one or more steps can be removed from them.

[0067] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A construction method for concrete piers based on formwork anti-leakage and anti-falling techniques, characterized in that, Includes the following steps: Step 1: Construct the climbing formwork; Step 2: Climbing cones are pre-embedded in the already poured lower section of the pier, and the climbing formwork is installed through these climbing cones; Step 3: Tie the upper section of the pier reinforcement; Step 4: Clean the template and install a grout-stopping device on the template. The grout-stopping device includes a channel steel welded to the bottom surface of the template and a rubber grout-stopping rod fixedly embedded in the channel steel. The rubber grout-stopping rod is set towards the pier column and protrudes 10-40mm from the working surface of the template. Step 5: Install the template and close the template, ensuring that the bottom edge of the template fits snugly against the already poured lower section of the pier, thereby sealing the rubber grout stop bar with the already poured lower section of the pier. Step 6: Pre-embed climbing cones in the upper section of the pier; Step 7: Install the climbing formwork anti-fall device. The climbing formwork anti-fall device includes a "well"-shaped support frame that is supported horizontally on the steel reinforcement frame and a connecting beam connecting the "well"-shaped support frame and the climbing formwork. The "well"-shaped support frame is composed of four intersecting support beams, and both ends of each support beam are cantilevered ends extending out of the steel reinforcement frame. One end of the connecting beam is connected to the cantilevered end of the support beam, and the other end of the connecting beam is connected to the climbing formwork. The connecting beam is also equipped with rollers, which can be hooked onto the support beams. Step 8: Pour concrete into the upper section of the pier and cure it; Step 9: Repeat steps 1-8 above to carry out the climbing formwork construction.

2. The construction method for concrete piers based on formwork for leak prevention and fall prevention according to claim 1, characterized in that, The rubber grout stopper is cylindrical in shape.

3. The concrete pier construction method based on formwork for preventing leakage and falling as described in claim 2, Its features are, The rubber grout stop bar is made of polyurethane.

4. The construction method for concrete piers based on formwork for leak prevention and fall prevention according to claim 2, characterized in that, After the rubber grout stop bar is embedded into the channel steel in step 4, the rubber grout stop bar protrudes 22mm from the working surface of the template.

5. The construction method for concrete piers based on formwork for leak prevention and fall prevention according to claim 2, characterized in that, The connecting beam of the fall arrestor is an H-shaped structure, which includes two columns and a crossbar connecting the two columns; the roller is rotatably supported between the two columns, and the end of the support beam is provided with a limiting member to limit the roller.

6. The construction method for concrete piers based on formwork for leak prevention and fall prevention according to claim 2, characterized in that, The climbing cone in step 6 includes an embedded plate, a high-strength screw, a climbing cone body, and mounting bolts that are fixedly connected in sequence. The specific method for pre-embedding the climbing cone on the upper section of the pier in step 6 is as follows: the climbing cone body is fixed on the template with the installation bolts, and the embedded plate, the high-strength screw and the climbing cone body are located on the side of the template facing the pier, while the installation bolts are located on the side of the template away from the pier.

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