Guardrail structure construction method
By pre-setting the initial height and connection gap of the reinforced concrete fence, the problem of settlement and cracking at the connection between the fence and the post was solved, and the safe construction of the guardrail structure was achieved.
Patent Information
- Application Number
- CN202611121553.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-27
- Publication Date
- 2026-08-25
AI Technical Summary
In existing technologies, cracks occur at the connection between reinforced concrete fences and reinforced concrete columns due to settlement, affecting structural safety.
By determining the width and settlement of the reinforced concrete fence, setting the initial height in advance, and leaving a gap of 1mm-5mm at the connection, it is ensured that the fence and the post form an integral structure to adapt to settlement changes.
This prevented cracking at the connection between the fence and the posts, ensuring the construction safety of the guardrail structure and meeting protection requirements.
Smart Images
Figure CN122630007A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of guardrail construction technology, and in particular to a method for constructing a guardrail structure. Background Technology
[0002] In building construction, after the reinforced concrete columns of the main frame structure are completed, it is often necessary to add reinforced concrete fence structures between adjacent reinforced concrete columns to meet functional requirements such as rain protection, sun shading, landscape separation, or safety protection. Currently, the conventional construction method for such fence structures is mainly to install reinforcing bars on the sides of the reinforced concrete columns or use pre-reserved connecting reinforcing bars, then erect formwork on site and pour reinforced concrete fences, so that the two ends of the fence are rigidly connected to the reinforced concrete columns through integral concrete pouring. However, because the reinforced concrete fence will settle after pouring, cracks will appear at the connection between the reinforced concrete fence and the reinforced concrete columns, thus affecting structural safety. Summary of the Invention
[0003] The purpose of this invention is to overcome the shortcomings of existing technologies, which involve installing reinforcing bars on the side of reinforced concrete columns or using pre-reserved connecting reinforcing bars, then setting up formwork and pouring reinforced concrete fences on site. These issues lead to settlement after the reinforced concrete fences are poured, resulting in cracks at the connection between the reinforced concrete fences and the reinforced concrete columns, thus affecting structural safety. This invention provides a construction method for a protective fence structure.
[0004] This invention provides a method for constructing a guardrail structure, comprising the following steps:
[0005] S1. Determine the width of the reinforced concrete fence, and based on the width of the reinforced concrete fence, determine the settlement of the reinforced concrete fence, the position of the reinforced concrete fence connecting to the floor slab, and the position of the steel fence on both sides of the reinforced concrete fence connecting to the floor slab. S2. Determine the initial height of the reinforced concrete fence and the initial height of the steel fence based on the settlement of the reinforced concrete fence. The initial height of both the reinforced concrete fence and the initial height of the steel fence are higher than the standard preset height. S3. Construct reinforced concrete fences at the corresponding positions on the floor slab according to the initial height of the reinforced concrete fences, so that the reinforced concrete fences and the floor slab form an integral structure. S4. Construct a steel fence at the initial height between one end of the reinforced concrete fence and the adjacent reinforced concrete column, so that the steel fence is fixedly connected to the corresponding positions of the reinforced concrete fence and the floor slab to form a whole, and a reserved gap of 1mm-5mm is formed between the steel fence and the corresponding reinforced concrete column, thus completing the construction of the guardrail structure.
[0006] Preferably, the steel fence includes a top horizontal bar and a plurality of vertical bars, the vertical bars being spaced apart along the length of the horizontal bar; In step S4, when installing the steel fence, first fix the uprights to the corresponding positions on the floor slab. After determining the top elevation of the uprights, adjust the elevation of the horizontal bars and then fix one end of the horizontal bar to one end of the reinforced concrete fence, so that a reserved gap is formed between the other end of the horizontal bar and the corresponding reinforced concrete column. Then connect the horizontal bar to the uprights below to complete the installation of the steel fence.
[0007] Preferably, in step S1, the position of the upright connecting to the floor slab is determined based on the position of the steel fence connecting to the floor slab obtained in step S1; Before step S3, the construction of the floor slab is also included, marking the center position of the upright on the floor slab and embedding the first pre-embedded part; In step S4, the upright is fixed to the first embedded part of the floor slab according to the marked center position of the upright.
[0008] Preferably, the first embedded part includes an embedded steel plate and a U-shaped steel bar, with both ends of the U-shaped steel bar welded to the embedded side of the embedded steel plate, and the opposite side of the embedded side of the embedded steel plate facing outward; During the construction of the floor slab, the U-shaped steel bars of the first embedded part are fixed to the structural steel bars of the floor slab, and then the concrete of the floor slab is poured. In step S4, the pole is welded to the pre-embedded steel plate of the first pre-embedded part according to the marked center position of the pole.
[0009] Preferably, before welding the upright to the embedded steel plate of the first embedded part, the surface of the embedded steel plate of the first embedded part is cleaned so that the embedded steel plate exposes a metallic luster. Align the upright with the embedded steel plate of the first embedded part, adjust the verticality of the upright so that the deviation is ≤3mm / m, and fix the upright with temporary support to prevent the upright from tilting. Then, welding rods are used to fully weld the upright to the embedded steel plate of the first embedded part on both sides, with a weld height ≥ 6mm.
[0010] Preferably, different uprights are welded in sections symmetrically to prevent deformation of the uprights.
[0011] Preferably, when pouring concrete for the floor slab, the deviation of the embedded steel plate of the first embedded part is controlled to be ≤5mm; In step S4, for the embedded steel plate of the first embedded part with excessive position deviation, the method of rebar installation or chemical anchor bolts is used to remedy the situation, and the upright is welded to the rebar installation or chemical anchor bolts.
[0012] Preferably, during the construction of the floor slab, exposed reinforcing bars for connection with the reinforced concrete fence are reserved at the position of the reinforced concrete fence connecting the floor slab as determined in step S1. In step S3, the reinforcing bars of the reinforced concrete fence are tied at the corresponding positions on the floor slab, so that the reinforcing bars of the reinforced concrete fence are connected with the exposed reinforcing bars reserved in the floor slab. Then, the concrete of the reinforced concrete fence is poured, so that the reinforced concrete fence and the floor slab form an integral whole.
[0013] Preferably, in step S3, when constructing the reinforced concrete fence at the corresponding position of the floor slab, according to the initial height of the steel fence obtained in step S2, a second embedded part is pre-embedded at both ends of the reinforced concrete fence. The second embedded part includes an embedded steel plate and a U-shaped steel bar. The two ends of the U-shaped steel bar are welded to the embedded side of the embedded steel plate. The opposite side of the embedded side of the embedded steel plate faces outward. The U-shaped steel bar of the second embedded part is pre-embedded at the corresponding end of the reinforced concrete fence at the position corresponding to the steel fence. The outward protrusion of the embedded steel plate of the second embedded part extends outward from the corresponding end face of the reinforced concrete fence.
[0014] Preferably, in step S4, after the steel fences at both ends of the reinforced concrete fence are constructed, the steel fences and their connecting nodes are subjected to anti-corrosion treatment. The anti-corrosion treatment includes hot-dip galvanizing, applying anti-rust paint or covering with an anti-corrosion layer, and the connection between the reinforced concrete fence and the steel fence is repaired with a padding layer.
[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention provides a construction method for a protective fence structure. By determining the width of the reinforced concrete fence, the settlement amount of the reinforced concrete fence, the position of the reinforced concrete fence connecting to the floor slab, and the position of the steel fences on both sides of the reinforced concrete fence connecting to the floor slab can be determined. Furthermore, by determining the settlement amount of the reinforced concrete fence, the initial height of both the reinforced concrete fence and the steel fence can be determined. Both the initial heights of the reinforced concrete fence and the initial heights of the steel fence are higher than the standard preset height, thus allowing for advance allowance for the settlement of the reinforced concrete fence. After installation, one end of the steel fence connects to the reinforced concrete fence, and the lower part connects to the floor slab, meeting the protection requirements. A 1mm-5mm wide reserved gap is formed between the other end and the corresponding reinforced concrete column, allowing the steel fence to adapt to the settlement of the reinforced concrete fence using its own material properties. This ensures that the final height of the reinforced concrete fence and the affected steel fence after settlement is basically close to the standard preset height, avoiding cracking at the connection between the reinforced concrete fence and the reinforced concrete column, and ensuring the construction safety of the protective fence structure. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the elevation after the construction of the floor slab; Figure 2 This is a plan view of the floor slab after construction; Figure 3 This is a schematic diagram of the elevation after the construction of the reinforced concrete fence. Figure 4 This is a plan view of the reinforced concrete fence after construction. Figure 5 This is a schematic diagram of the elevation after the steel fence has been installed; Figure 6 for Figure 5 A magnified view of a portion of circle A in the middle; Figure 7 A schematic diagram showing the welding of the steel fence posts to the pre-embedded steel plates in the floor slab; Figure 8 A schematic diagram showing the welding of the crossbars of a steel fence to the pre-embedded steel plates in the end face of a reinforced concrete fence. Figure 9 This is a structural schematic diagram of the embedded parts; Figure 10 This is a plan view of the floor plan after the construction of the skirting board.
[0017] Marked in the diagram: 1. Reinforced concrete column; 2. Floor slab; 21. Drainage ditch; 3. Reinforced concrete fence; 31. Subbase; 32. Exposed reinforcing bars; 4. Steel fence; 401. Reserved gap; 41. Horizontal bar; 42. Vertical bar; 51. Embedded steel plate; 52. U-shaped reinforcing bars; 6. Skirting board; 7. Corridor. Detailed Implementation
[0018] The present invention will now be described in further detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.
[0019] Unless otherwise specified, the terms "upper," "lower," "left," "right," "center," "inner," and "outer," etc., used in the description of specific embodiments of the present invention to indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the product / equipment / device is usually placed during use. These terms are merely for the purpose of facilitating the description of the present invention or simplifying the description in specific embodiments, and for enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on the present invention.
[0020] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," "parallel," and "coaxial" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, parallel, or coaxial. Slight tilt or deviation is permissible, as long as it does not affect the normal function of the relevant component. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be perfectly horizontal; a slight tilt is acceptable. "Coaxial" means that two components are arranged as coaxially as possible, allowing them to move coaxially or approximately coaxially when their relative positions change. Alternatively, it can be simplified to mean that the corresponding device / component / element, when arranged in "horizontal," "vertical," "suspended," "parallel," or "coaxial" directions, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the solution of the present invention.
[0021] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.
[0022] Furthermore, in the description of the embodiments of the present invention, "several", "more than", and "a number of" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.
[0023] Furthermore, in the description of the technical solution of this invention, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to connection methods commonly used in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.
[0024] Example 1 like Figures 1-10As shown, the guardrail structure includes a reinforced concrete fence 3 and steel fences 4 installed at both ends of the reinforced concrete fence 3. Both the reinforced concrete fence 3 and the steel fences 4 at both ends are positioned between reinforced concrete columns 1 on both sides. Both the reinforced concrete fence 3 and the steel fences 4 at both ends are fixed to the floor slab 2 connecting the reinforced concrete columns 1 on both sides. One end of each steel fence 4 is fixedly connected to the corresponding end of the reinforced concrete fence, and a reserved gap 401 is provided between the other end of the steel fence and the adjacent column to mitigate settlement. The width of the reserved gap 401 is 1mm-5mm, providing space for settlement while preventing damage to the protective capability due to excessively large gaps.
[0025] A method for constructing a guardrail structure includes the following steps: S1. Determine the width of the reinforced concrete fence 3. Based on the width of the reinforced concrete fence 3, determine the settlement of the reinforced concrete fence 3, the position of the reinforced concrete fence 3 connecting to the floor slab 2, and the position of the steel fences 4 on both sides of the reinforced concrete fence 3 connecting to the floor slab 2. The settlement is calculated based on the width of the reinforced concrete fence 3 and material parameters. S2. Determine the initial height of the reinforced concrete fence and the initial height of the steel fence based on the settlement of the reinforced concrete fence. The initial height of both the reinforced concrete fence and the initial height of the steel fence are higher than the standard preset height to provide advance for the settlement of the reinforced concrete fence. S3. Construct reinforced concrete fences at the corresponding positions on the floor slab according to the initial height of the reinforced concrete fences, so that the reinforced concrete fences and the floor slab form an integral structure. S4. Construct a steel fence at the initial height between one end of the reinforced concrete fence and the adjacent reinforced concrete post, ensuring the steel fence is fixedly connected to the corresponding positions of the reinforced concrete fence and the floor slab to form a whole. A 1mm-5mm wide pre-reserved gap 401 should be formed between the steel fence and the corresponding reinforced concrete post, completing the construction of the guardrail structure. The construction of the guardrail structure is complete after the steel fence 4 at both ends of the reinforced concrete fence 3 is completed. The steel fence 4 at both ends can be constructed simultaneously or sequentially.
[0026] In this embodiment, the steel fence 4 includes a top horizontal bar 41 and several vertical bars 42. The vertical bars 42 are spaced apart along the length of the horizontal bar 41. The top horizontal bar 41 connects to the reinforced concrete fence, making installation more convenient and meeting the protection requirements.
[0027] In step S1, the width of the reinforced concrete fence 3 is determined. Based on the width of the reinforced concrete fence 3, the settlement of the reinforced concrete fence 3, the position of the reinforced concrete fence 3 connecting to the floor slab 2, and the position of the steel fences 4 on both sides of the reinforced concrete fence 3 connecting to the floor slab 2 are determined. Based on the position of the steel fence 4 connecting to the floor slab 2 obtained in step S1, the position of the upright 42 connecting to the floor slab 2 is determined. In step S2, the initial height and the standard preset height of the steel fence both refer to the top surface height of the top horizontal bar 41; Before step S3, such as Figure 1 and Figure 2 As shown, the construction also includes the construction of floor slab 2. The center position of the upright 42 is marked on floor slab 2, and the first embedded part is installed. Specifically, according to the guardrail structural plan, the center line of the upright 42 and the position line of the first embedded part are marked on floor slab 2, and points are arranged according to the design spacing. The center position of the first embedded part is marked. The first embedded part (the upper surface of the embedded steel plate 51 is flush with the top surface of floor slab 2) is placed at the marked position. The U-shaped steel bar 52 is tied or spot-welded to the structural steel bar of floor slab 2. During the pouring of concrete for floor slab 2, a dedicated person is assigned to monitor the work to prevent displacement and control the deviation of the embedded steel plate 51 of the first embedded part to ≤5mm.
[0028] For further details, please refer to... Figure 7 The first embedded part includes an embedded steel plate 51 and a U-shaped steel bar 52. The two ends of the U-shaped steel bar 52 are welded to the embedded side of the embedded steel plate 51. The opposite side of the embedded side of the embedded steel plate 51 faces outward. When constructing the floor slab 2, the U-shaped steel bar 52 of the first embedded part is fixed to the structural steel bar of the floor slab, and then the concrete of the floor slab is poured. The floor slab 2 can be the floor of the corridor 7. During the construction of the floor slab 2, a drainage ditch 21 is constructed on the side of the corridor 7 floor closest to the steel fence 4 to be constructed, such as... Figure 2 As shown, the water collection ditch 21 is continuously arranged along the length of the corridor 7, and the water collection ditch 21 is connected to the drainage structure. The drainage structure is existing technology, such as connecting the drainage pipe through the drainage floor drain. After the subsequent construction of the steel fence 4, the rainwater entering from the steel fence 4 can be collected in the water collection ditch 21 and then discharged. During the construction of floor slab 2, according to the position of the reinforced concrete fence 3 connecting to floor slab 2 determined in step S1, exposed reinforcing bars 32 are reserved for connection with the reinforced concrete fence 3, such as... Figure 1 and Figure 2 As shown; in a preferred embodiment, the reinforcing bars of the reinforced concrete fence 3 are tied at the corresponding position of the floor slab 2, so that the reinforcing bars of the reinforced concrete fence 3 are connected to the exposed reinforcing bars 32 reserved in the floor slab, and then the concrete of the reinforced concrete fence 3 is poured, so that the reinforced concrete fence 3 and the floor slab form an integral whole.
[0029] In step S3, when constructing the reinforced concrete fence 3 at the corresponding position of the floor slab 2, based on the initial height of the steel fence obtained in step S2, second embedded parts are pre-embedded at both ends of the reinforced concrete fence 3. The second embedded parts include embedded steel plates 51 and U-shaped reinforcing bars 52. The two ends of the U-shaped reinforcing bars 52 are welded to the embedded sides of the embedded steel plates 51. The opposite side of the embedded sides of the embedded steel plates 51 faces outwards. The U-shaped reinforcing bars 52 of the second embedded part are pre-embedded at the corresponding end of the reinforced concrete fence 3 corresponding to the position of the steel fence 4. The outward-facing side of the embedded steel plate 51 of the second embedded part protrudes from the corresponding end face of the reinforced concrete fence 3. (Refer to...) Figure 3 and Figure 8 As shown; In a preferred embodiment, the width of the steel fence 4 is 40cm-50cm, which is relatively narrow, thus reducing the probability of rainwater entering the floor slab 2 and reducing the amount of rainwater entering the floor slab 2.
[0030] In step S4, when installing the steel fence 4, the uprights 42 are first fixed at the corresponding positions on the floor slab 2. Further, in step S4, the uprights 42 are fixed to the first embedded part of the floor slab 2 according to the marked center position. Even further, the uprights 42 are welded to the embedded steel plate 51 of the first embedded part according to the marked center position.
[0031] In a preferred embodiment, before welding the upright 42 to the embedded steel plate 51 of the first embedded part, the surface of the embedded steel plate 51 of the first embedded part is cleaned (e.g., removing concrete and oil stains) to expose its metallic luster. For embedded steel plates 51 of the first embedded part with excessive positional deviation, rebar or chemical anchors are used for remediation, and the upright 42 is welded to the rebar or chemical anchor. When the positional deviation of the embedded steel plate 51 of the first embedded part is within the allowable range, the upright 42 is aligned with the embedded steel plate 51 of the first embedded part, and the verticality of the upright 42 is adjusted so that the deviation is ≤3mm / m. The upright 42 is fixed with temporary supports to prevent it from tilting. Then, the upright 42 is fully welded to the embedded steel plate 51 of the first embedded part on both sides using welding rods, with a weld height ≥6mm. In a preferred embodiment, different uprights 42 are welded symmetrically in sections to prevent deformation of the upright 42. After welding, remove the slag and check the weld for defects such as slag inclusions, porosity, and incomplete penetration. Grind and clean the welded areas and the base of the 42 uprights, apply two coats of anti-rust paint, and apply the topcoat after it dries to prevent the weld from rusting and cracking.
[0032] After the steel fence post 42 is installed, and the top elevation of the post is determined, a 1.1m elevation control line for the top horizontal bar 41 is marked according to the fence structure elevation drawing. After adjusting the horizontal bar to match the 1.1m elevation control line, the side of the embedded steel plate at one end of the reinforced concrete fence is welded to one end of the horizontal bar, creating a pre-reserved gap between the other end of the horizontal bar and the corresponding reinforced concrete post. Figure 5 and Figure 6 As shown, the horizontal bar 41 is then connected to the vertical bar 42 below by full welding. The weld is full, and the weld is ground to make it smooth and burr-free, avoiding sharp edges, thus completing the installation of the steel fence 4. In a preferred embodiment, in step S4, after the construction of the steel fence 4 at both ends of the reinforced concrete fence 3 is completed, all welds and the surfaces of the horizontal bars 41 and vertical bars 42 are ground with an angle grinder to remove weld slag, burrs, and rust, making the lines of the horizontal bars 41 and vertical bars 42 smooth and the surface flat. In addition, the steel fence 4 and its connecting nodes are subjected to anti-corrosion treatment, including hot-dip galvanizing, painting with anti-rust paint, or covering with an anti-corrosion layer. For the anti-corrosion coating, two coats of anti-rust paint are applied first, and after they are completely dry, two coats of topcoat (color according to design requirements) are applied to ensure uniform coating without missed areas, runs, or peeling. The connection between the reinforced concrete fence and the steel fence is repaired with a padding layer 31, such as... Figure 8 As shown.
[0033] In a preferred embodiment, such as Figure 10 As shown, a skirting board 6 can also be installed below the steel fence 4. The skirting board 6 is installed on the side of the drainage ditch 21 that is close to the steel fence 4. This serves two purposes: first, to ensure safety and protection; and second, to block the drainage ditch 21 and prevent water from leaking from the corridor 7 through the steel fence 4 to the floor below. The skirting board 6 can be made of concrete and can be tiled. Its installation on the side of the steel fence 4 close to the drainage ditch 21 can prevent water from seeping into the steel fence 4. The steel fence 4 itself is protected to ensure its service life.
[0034] The construction method for the guardrail structure described in this embodiment, by determining the width of the reinforced concrete fence 3, can determine the settlement amount of the reinforced concrete fence 3, the position of the reinforced concrete fence 3 connecting to the floor slab 2, and the position of the steel fences 4 on both sides of the reinforced concrete fence 3 connecting to the floor slab 2. Furthermore, by determining the settlement amount of the reinforced concrete fence, the initial height of both the reinforced concrete fence and the steel fence can be determined. Both the initial heights of the reinforced concrete fence and the steel fence are higher than the standard preset height, thus allowing for advance allowance for the settlement of the reinforced concrete fence. After installation, one end of the steel fence connects to the reinforced concrete fence, and the lower part connects to the floor slab, meeting the protection requirements. A 1mm-5mm wide reserved gap is formed between the other end and the corresponding reinforced concrete column, allowing the steel fence to adapt to the settlement of the reinforced concrete fence using its own material properties. This ensures that the final height of the reinforced concrete fence and the affected steel fence after settlement is basically close to the standard preset height, avoiding cracking at the connection between the reinforced concrete fence and the reinforced concrete column, and ensuring the construction safety of the guardrail structure.
[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A method for constructing a guardrail structure, characterized in that, Includes the following steps: S1. Determine the width of the reinforced concrete fence, and based on the width of the reinforced concrete fence, determine the settlement of the reinforced concrete fence, the position of the reinforced concrete fence connecting to the floor slab, and the position of the steel fence on both sides of the reinforced concrete fence connecting to the floor slab. S2. Determine the initial height of the reinforced concrete fence and the initial height of the steel fence based on the settlement of the reinforced concrete fence. The initial height of both the reinforced concrete fence and the initial height of the steel fence are higher than the standard preset height. S3. Construct reinforced concrete fences at the corresponding positions on the floor slab according to the initial height of the reinforced concrete fences, so that the reinforced concrete fences and the floor slab form an integral structure. S4. Construct a steel fence at the initial height between one end of the reinforced concrete fence and the adjacent reinforced concrete column, so that the steel fence is fixedly connected to the corresponding positions of the reinforced concrete fence and the floor slab to form a whole, and a reserved gap of 1mm-5mm is formed between the steel fence and the corresponding reinforced concrete column, thus completing the construction of the guardrail structure.
2. The construction method for a guardrail structure according to claim 1, characterized in that, The steel fence includes a top horizontal bar and several vertical bars, with the vertical bars spaced apart along the length of the horizontal bar. In step S4, when installing the steel fence, first fix the uprights to the corresponding positions on the floor slab. After determining the top elevation of the uprights, adjust the elevation of the horizontal bars and then fix one end of the horizontal bar to one end of the reinforced concrete fence, so that a reserved gap is formed between the other end of the horizontal bar and the corresponding reinforced concrete column. Then connect the horizontal bar to the uprights below to complete the installation of the steel fence.
3. The construction method for a guardrail structure according to claim 2, characterized in that, In step S1, the position of the upright connecting to the floor slab is determined based on the position of the steel fence connecting to the floor slab obtained in step S1; Before step S3, the construction of the floor slab is also included, marking the center position of the upright on the floor slab and embedding the first pre-embedded part; In step S4, the upright is fixed to the first embedded part of the floor slab according to the marked center position of the upright.
4. The construction method for a guardrail structure according to claim 3, characterized in that, The first embedded component includes an embedded steel plate and a U-shaped steel bar. The two ends of the U-shaped steel bar are welded to the embedded side of the embedded steel plate, and the opposite side of the embedded side of the embedded steel plate faces outward. During the construction of the floor slab, the U-shaped steel bars of the first embedded part are fixed to the structural steel bars of the floor slab, and then the concrete of the floor slab is poured. In step S4, the pole is welded to the pre-embedded steel plate of the first pre-embedded part according to the marked center position of the pole.
5. A construction method for a guardrail structure according to claim 4, characterized in that, Before welding the upright to the embedded steel plate of the first embedded part, clean the surface of the embedded steel plate of the first embedded part so that the embedded steel plate exposes a metallic luster. Align the upright with the embedded steel plate of the first embedded part, adjust the verticality of the upright so that the deviation is ≤3mm / m, and fix the upright with temporary support to prevent the upright from tilting. Then, welding rods are used to fully weld the upright to the embedded steel plate of the first embedded part on both sides, with a weld height ≥ 6mm.
6. The construction method for a guardrail structure according to claim 4, characterized in that, Different uprights are welded in sections symmetrically to prevent deformation.
7. The construction method for a guardrail structure according to claim 4, characterized in that, When pouring concrete for the floor slab, the deviation of the embedded steel plate of the first embedded part should be controlled to be ≤5mm. In step S4, for the embedded steel plate of the first embedded part with excessive position deviation, the method of rebar installation or chemical anchor bolts is used to remedy the situation, and the upright is welded to the rebar installation or chemical anchor bolts.
8. A construction method for a guardrail structure according to claim 3, characterized in that, When constructing the floor slab, according to the position of the reinforced concrete fence connecting the floor slab determined in step S1, exposed reinforcing bars are reserved to connect with the reinforced concrete fence. In step S3, the reinforcing bars of the reinforced concrete fence are tied at the corresponding positions on the floor slab, so that the reinforcing bars of the reinforced concrete fence are connected with the exposed reinforcing bars reserved in the floor slab. Then, the concrete of the reinforced concrete fence is poured, so that the reinforced concrete fence and the floor slab form an integral whole.
9. A construction method for a guardrail structure according to any one of claims 1-8, characterized in that, In step S3, when constructing the reinforced concrete fence at the corresponding position of the floor slab, based on the initial height of the steel fence obtained in step S2, second embedded parts are pre-embedded at both ends of the reinforced concrete fence. The second embedded part includes an embedded steel plate and a U-shaped steel bar. The two ends of the U-shaped steel bar are welded to the embedded side of the embedded steel plate. The opposite side of the embedded side of the embedded steel plate faces outward. The U-shaped steel bar of the second embedded part is pre-embedded at the corresponding end of the reinforced concrete fence at the position corresponding to the steel fence. The outward protrusion of the embedded steel plate of the second embedded part extends outward from the corresponding end face of the reinforced concrete fence.
10. A construction method for a guardrail structure according to any one of claims 1-8, characterized in that, In step S4, after the steel fences at both ends of the reinforced concrete fence are constructed, the steel fences and their connecting nodes are subjected to anti-corrosion treatment. The anti-corrosion treatment includes hot-dip galvanizing, applying anti-rust paint or covering with an anti-corrosion layer, and the connection between the reinforced concrete fence and the steel fence is repaired with a padding layer.