Method and system for fixing slender height difference groove hanging mold

Abstract

The invention discloses a method and a system for fixing a slender height difference groove hanging mold. The method comprises the following steps: firstly, accurately fixing a plurality of groups of horizontal supporting ribs on a groove main body structure; diagonal bracing steel bars are additionally arranged at the bottoms of the multiple sets of horizontal supporting ribs, and a stable triangular supporting system is formed; the inner side of the groove body structure is in threaded connection with an ejector rod, the ejector rod abuts against and pushes the side edge of the formwork assembly to move, and the formwork assembly is adjusted to the designed axis position. Screws are welded to the top of the groove body structure, the two sides of a pressing plate penetrate through the screws, then the pressing plate is placed on the top of the formwork assembly, and nuts are adopted for locking. According to the fixing method, by adopting a specific fixing mode and a supporting structure, side pressure and other external force during concrete pouring can be effectively resisted, it is ensured that the hanging formwork is always kept at the accurate position and shape in the construction process, meanwhile, rapid mounting and dismounting can be achieved, and the construction efficiency is improved. Construction personnel can complete mounting and dismounting work in a short time, and the turnover efficiency of a construction site is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of building construction, and more specifically, relates to a fixing method and system for the suspended formwork of a slender groove with a height difference. Background Art

[0002] As a common building structure, the slender groove structure is widely used in building projects such as basements and industrial factories. Its construction quality is directly related to the overall stability, waterproofness, and durability of the building. There are many drawbacks in the traditional fixing method of the slender groove suspended formwork. In previous constructions, simple wire suspension or temporary support methods were often used. Such practices are extremely prone to problems such as formwork displacement and deformation during concrete pouring: (1) The strength of wire suspension is limited and it is difficult to withstand the lateral pressure and impact force during concrete pouring, resulting in large size deviations of the groove, affecting the progress of subsequent processes. For example, when installing pipes, it may not be possible to accurately match the groove size; (2) Temporary support has the problem of inconvenient removal. If removed too early, the formwork may be displaced due to the loss of support; if removed too late, it will affect the construction progress, and damage to the formed concrete structure may also occur during the removal process. Generally, the bottom surface of the long and narrow channel has a certain slope, and it is not suitable for tool formwork either.

[0003] In the prior art, Patent CN211524069U discloses a groove formwork for groove construction, which solves the problem of complex installation and disassembly of the groove formwork in the prior art. Its technical key points are: a groove formwork for groove construction, including two groups of outer formworks and an inner formwork arranged between the two groups of outer formworks. There is a pouring groove for concrete pouring left between the outer formwork and the inner formwork. An installation structure is arranged between the side of the outer formwork away from the inner formwork and the external soil layer. A connecting piece for fixedly connecting the two is arranged between the outer formwork and the inner formwork. A connecting component is connected between the two groups of inner formworks, and the distance between the two groups of inner formworks can be adjusted and locked by the connecting component. Generally, the long and narrow groove has a slope and is not suitable for tool formwork. For the slender reinforced concrete groove, this technology has no reliable mold support points before concrete pouring, and the mold manufacturing and installation are relatively complex.

[0004] With the development of the construction industry, the requirements for construction accuracy, efficiency, and quality are continuously increasing. There is an urgent need for an innovative fixing method for the slender groove suspended formwork and an advanced reinforced formwork support technology. Such technology should be able to effectively solve the defects of traditional methods, ensure the stability of the formwork, accurate positioning of steel bars, and firm sealing of the formwork during construction, thereby improving the overall quality of building projects, shortening the construction period, and reducing construction costs. Summary of the Invention

[0005] In view of the problems that the existing methods for fixing hanging formworks cannot accurately position, ensure the support strength, and are complex to demolish, the present invention provides a fixing method for a slender groove with height difference hanging formwork to solve such problems.

[0006] To achieve the above object, the present invention provides a fixing method for a slender groove with height difference hanging formwork, including the following steps:

[0007] S100: Accurately measure and set out the lines according to the design drawings to determine the groove position;

[0008] S200: According to the groove depth and width, build the framework steel bars of the groove main structure, fix the vertical anchoring steel bars on the foundation, and build the upper steel bar mesh and the lower steel bar mesh on the outer side and the lower part of the top of the vertical anchoring steel bars respectively;

[0009] S300: Add diagonal bracing steel bars, fix one end of each diagonal bracing steel bar inside the vertical anchoring steel bar, and fix the other end at the intersection of the lower steel bar mesh and the vertical anchoring steel bar, so as to form a stable triangular support structure and enhance the anti-deformation ability of the steel bar framework;

[0010] S400: Locate the welding height of the horizontal support steel bars, determine the design elevation of two groups of horizontal support steel bars at the head and tail of the groove respectively according to the design height difference of the groove and fix them, and stretch a marking line between the two groups of horizontal support steel bars to determine the horizontal height of multiple groups of horizontal support steel bars in the groove;

[0011] S500: Fit the bottoms of multiple groups of horizontal support steel bars in the groove to the two marking lines respectively for height positioning, and then weld and fix them in sequence;

[0012] S600: Weld nuts at the corresponding positions on the vertical anchoring steel bars, set matching threaded ejector rods, and weld screw rods at the corresponding positions on the top of the upper steel bar mesh;

[0013] S700: Coat the outer side of the formwork assembly with a release agent, place it on the horizontal support steel bars, turn the ejector rods to push the formwork assembly and adjust the formwork assembly to the designed axis position, and after completion, apply pressure to both sides of it to complete the precise positioning and fixing of the formwork assembly;

[0014] S800: Pass both sides of the pressing plate through the screw rods and place them on the top of the formwork assembly, and lock them with nuts; after completion, carry out the concrete pouring operation;

[0015] S900: After the concrete is formed, loosen the nuts to remove the pressing plate, demolish the formwork assembly, and after cleaning, cut off the screw rods and ejector rods exposed on the concrete surface.

[0016] Furthermore, in step S200, the anchor steel bars are symmetrically arranged on both sides of the center axis of the groove, and multiple groups are arranged at intervals along the direction of the groove, and their bottoms are pre-buried in the foundation and fixed together with the foundation by pouring concrete; the upper steel mesh includes a first horizontal transverse rib and a first horizontal longitudinal rib, which are arranged at right angles at a certain interval, and all intersections are tied to form a mesh structure, and the intersections with the vertical anchor steel bars are reinforced by welding; the lower steel mesh includes a second horizontal transverse rib and a second horizontal longitudinal rib, which are arranged at right angles at a certain interval, and all intersections are tied to form a mesh structure, and the intersections with the vertical anchor steel bars are reinforced by welding.

[0017] Furthermore, in step S300, the number of diagonal bracing steel bars is matched with the number of anchoring steel bars, and a plurality of X-shaped diagonal bracing steel bars and vertical anchoring steel bars form a rectangular steel bar frame, so that the main structure of the trench is stable and reliable, effectively resisting the lateral pressure and impact force during concrete pouring, and ensuring the accurate position of the template.

[0018] Further, in step S400, the positioning of the welding height of the horizontal support bars includes: using a laser level to first measure the design elevations of the two groups of horizontal support bars at the beginning and end of the groove, and mark them; placing one group of horizontal support bars horizontally, and aligning them with the marks on the two groups of vertical anchor bars at the beginning of the groove, and welding the horizontal support bars to the two groups of vertical anchor bars at the beginning of the groove by welding; placing another group of horizontal support bars horizontally, and aligning them with the marks on the two groups of vertical anchor bars at the end of the groove, and welding the horizontal support bars to the two groups of vertical anchor bars at the end of the groove by welding; two groups of marking lines are set between the two groups of horizontal support bars at the beginning and end of the groove, and the marking lines determine the horizontal height of the bottom of each section in the height difference groove.

[0019] Furthermore, in step S500, when positioning and welding the horizontal support bars, the sides of the horizontal support bars are respectively fitted with the two corresponding symmetrically arranged groups of vertical anchor steel bars, and the bottoms of the horizontal support bars are respectively fitted with the two groups of marking lines, so as to quickly achieve high-precision positioning of each section of the horizontal support bars in the groove; the horizontal support bars and the vertical anchor steel bars are welded at the fitting points to complete the fixing operation of multiple groups of horizontal support bars.

[0020] Furthermore, in step S600, when welding nuts at corresponding positions on the vertical anchor steel bars, the midpoint between the horizontal support bars and the top of the corresponding vertical anchor steel bars is taken for nut welding, and matching threaded push rods are provided so that multiple groups of push rods push and press against the center of the side of the formwork assembly to ensure that the formwork assembly is evenly stressed.

[0021] Furthermore, in step S700, when positioning the formwork assembly, a laser theodolite is used to project and mark the center axis of the groove on the horizontal support ribs; the formwork assembly is hoisted to the top of the horizontal support ribs, and supported by a plurality of sets of horizontal support ribs adapted to the height difference of the groove, thereby completing the precise positioning of the formwork assembly in the vertical direction; the top rods on the vertical anchor steel bars on both sides of the center axis of the groove are twisted to push the center axis of the formwork assembly to be flush with the center axis of the groove, so that the formwork assembly is located at the center of the groove, thereby completing the precise positioning of the formwork assembly in the horizontal direction.

[0022] Furthermore, in step S800, the pressing plate is made of a steel plate with through holes at both ends thereof, and the positions of the through holes correspond to the welding positions of the screws. The screws pass through the pressing plate through the corresponding through holes and are locked with nuts so that the top of the pressing plate is pressed and fixed to the top of the formwork assembly, thereby avoiding vertical displacement of the formwork assembly during concrete pouring and ensuring pouring accuracy.

[0023] According to another aspect of the present invention, there is also provided a fixing system for a slender height difference groove hanging formwork, comprising: a groove body, comprising an upper steel mesh, a lower steel mesh and vertical anchor steel bars; wherein the anchor steel bars are symmetrically arranged on both sides of the groove centerline, and a plurality of groups are arranged at intervals along the groove direction, and the upper steel mesh and the lower steel mesh are fixedly arranged on the top outer side and the lower part of the vertical anchor steel bars respectively; a screw rod fixedly arranged on the top of the upper steel mesh, and the two sides of the pressure plate are passed through the screw rod and placed on the top of the formwork assembly, and are locked with nuts; a top rod threadedly connected to the vertical anchor steel bars, which is fixed to the top of the formwork assembly The middle part of the side of the formwork assembly is resisted, and the formwork assembly is pushed to adjust to the designed axis position and pressed to fix it; the horizontal support bars for bottom support of the formwork assembly, the sides of the horizontal support bars are respectively fixedly connected with the two groups of vertical anchor steel bars which are symmetrically arranged, and there are multiple groups of horizontal support bars, and the horizontal heights of the multiple groups of horizontal support bars are adapted to the horizontal heights of the bottoms of each section in the groove; and the diagonal bracing steel bars, one end of which is fixed to the inner side of the vertical anchor steel bars, and the other end is fixed to the junction of the lower steel mesh and the vertical anchor steel bars, and multiple X-shaped diagonal bracing steel bars and the vertical anchor steel bars form a rectangular steel frame, so that the main structure of the groove is stable and reliable.

[0024] Furthermore, the formwork assembly includes a bottom formwork, a side formwork and a stiffening plate; the bottom formwork is placed on the top of the horizontal supporting ribs, and the side formworks are symmetrically fixed on both sides thereof; the stiffening plates are arranged in parallel in multiple groups on the top of the bottom formwork, and the inner sides of the two groups of side formworks are respectively abutted at both ends.

[0025] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0026] 1. The fixing method of the slender groove formwork with height difference of the present invention ensures the elevation of the groove bottom surface through horizontal positioning bars, and precisely adjusts the axis position of the formwork assembly through ejector rods, solving the technical problems of low formwork positioning accuracy and cumbersome operation in the traditional method, and achieving the technical effects of ensuring the dimensional accuracy of the groove, improving the project quality, and reducing the later repair and rectification work.

[0027] 2. The fixing method of the slender groove formwork with height difference of the present invention presses and fixes the formwork assembly in the horizontal and vertical directions through ejector rods and pressing plates respectively, ensuring reliable fixing and convenient disassembly of the formwork assembly, solving the technical problems of inaccurate positioning by using iron wires for fixing and easy formwork displacement during concrete pouring in the traditional method, and generating the technical effects of standardized operation and improved work efficiency.

[0028] 3. The fixing method of the slender groove formwork with height difference of the present invention forms a stable support system through diagonal bracing steel bars and horizontal positioning bars to enhance the strength of the main structure of the groove, effectively resist the lateral pressure and impact force during concrete pouring, ensure the accurate position of the formwork assembly, and greatly reduce the risk of deformation and displacement; solving the problem of separately setting a formwork support system in the traditional method, and generating the technical effects of improving construction efficiency and ensuring construction quality.

[0029] 4. The fixing method of the slender groove formwork with height difference of the present invention ensures the overall stiffness of the formwork assembly and convenient removal by providing stiffening plates, solving the technical problem that the overall integrity of the traditional formwork is too strong and it is easy to damage the concrete edges and corners during removal, and generating the technical effects of improving project quality, saving materials and being environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of a fixing system for a slender groove formwork with height difference in an embodiment of the present invention;

[0031] Figure 2 It is a schematic structural diagram of the formwork assembly in an embodiment of the present invention;

[0032] Figure 3 It is a schematic flow chart of a fixing method for a slender groove formwork with height difference in an embodiment of the present invention.

[0033] In all the drawings, the same reference numerals represent the same technical features, specifically: 1 - formwork assembly, 101 - bottom formwork, 102 - side formwork, 103 - stiffening plate, 104 - cover plate, 2 - screw rod, 3 - pressing plate, 4 - upper steel bar mesh, 5 - ejector rod, 6 - horizontal support bar, 7 - lower steel bar mesh, 8 - diagonal bracing steel bar, 9 - vertical anchoring steel bar. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0035] As Figures 1-3 shown, the present invention provides a fixing method for a slender groove formwork with a height difference. This method first accurately fixes multiple groups of horizontal support ribs 6 on the groove main structure to determine the horizontal position of the formwork assembly 1; additional diagonal bracing bars 8 are added at the bottom of the multiple groups of horizontal support ribs 6 to form a stable triangular support system to enhance the strength of the groove main structure; a jacking rod 5 is threadedly connected and provided inside the groove main structure, and by the jacking rod 5 abutting against and pushing the center of the side of the formwork assembly 1, the formwork assembly 1 is adjusted to the designed axis position; a screw rod 2 is welded on the top of the groove main structure, both sides of the pressing plate 3 are passed through the screw rod 2 and then placed on the top of the formwork assembly 1, and nuts are used for locking to prevent the formwork assembly 1 from moving upward during concrete pouring. The fixing method of the present invention, by adopting a specific fixing method and support structure, can effectively resist the lateral pressure and other external forces during concrete pouring, ensure that the formwork always maintains an accurate position and shape during construction, and at the same time can achieve rapid installation and disassembly; through optimized design, the number and complexity of the support members are reduced, enabling construction workers to complete the installation and removal work in a shorter time, thereby shortening the construction period, improving the turnover efficiency of the construction site, and reducing the project cost.

[0036] As Figure 3 shown, in the embodiment of the present invention, the fixing method for the slender groove formwork with a height difference includes the following steps:

[0037] S100: Accurately measure and lay out the lines according to the design drawings to determine the groove position;

[0038] S200: According to the groove depth and width, build the framework steel bars of the groove main structure, fix the vertical anchoring steel bars 9 on the foundation, and respectively build the upper steel mesh 4 and the lower steel mesh 7 on the outer side and the lower part of the top of the vertical anchoring steel bars 9;

[0039] S300: Add diagonal bracing bars 8, with one end fixed inside the vertical anchoring steel bars 9 and the other end fixed at the intersection of the lower steel mesh 7 and the vertical anchoring steel bars 9, so as to form a stable triangular support structure and enhance the anti-deformation ability of the steel bar framework;

[0040] S400: Locate the welding height of the horizontal support bars 6. Determine the design elevations of two groups of horizontal support bars 6 at the head and tail of the trench respectively according to the height difference designed for the trench, and fix them. Then stretch a marking line between the two groups of horizontal support bars 6 to determine the horizontal heights of multiple groups of horizontal support bars 6 in the trench.

[0041] S500: Align the bottoms of multiple groups of horizontal support bars 6 in the trench with the two marking lines respectively for height positioning, and then carry out welding and fixing in sequence.

[0042] S600: Weld nuts at the middle part of the trench height direction on the vertical anchoring bars 9, and set the matching threaded ejector rods 5. Weld the screw rods 2 at the corresponding positions on the top of the upper steel mesh 4.

[0043] S700: Apply release agent on the outer side of the formwork assembly 1, and place it on the horizontal support bars 6. Turn the ejector rod 5 to push the formwork assembly 1 and adjust the formwork assembly 1 to the designed axis position. After completion, apply pressure on both sides of it to complete the precise positioning and fixing of the formwork assembly 1.

[0044] S800: Pass both sides of the pressing plate 3 through the screw rods 2 and place them on the top of the formwork assembly 1, and lock them with nuts. After completion, carry out concrete pouring operation.

[0045] S900: After the concrete is formed, loosen the nuts to remove the pressing plate 3, remove the formwork assembly 1, and cut off the screw rods 2 and ejector rods 5 exposed on the concrete surface after cleaning.

[0046] In step S200, the trench main structure includes an upper steel mesh 4, a lower steel mesh 7 and vertical anchoring bars 9. Among them, the anchoring bars 9 are symmetrically arranged on both sides of the trench central axis, and multiple groups are arranged at intervals along the trench direction. Their bottoms are pre-buried in the foundation and fixed by pouring concrete together with the foundation. The upper steel mesh 4 includes a first horizontal transverse bar and a first horizontal longitudinal bar, which are arranged at right angles at a certain interval between them. All the intersection points are tied to form a mesh structure, and the nodes related to the screw rods 2 are strengthened by welding. One end of the first horizontal transverse bar is in a prefabricated right-angle type with the vertical anchoring bar 9. The lower steel mesh 7 includes a second horizontal transverse bar and a second horizontal longitudinal bar, which are arranged at right angles at a certain interval between them. All the intersection points are tied to form a mesh structure. The nodes where the second horizontal transverse bar and the second longitudinal bar intersect with the vertical anchoring bar 9 are strengthened by welding.

[0047] In step S300, the number of the diagonal bracing steel bars 8 is set to be adapted to the number of the anchoring steel bars 9. By arranging two X-shaped diagonal bracing steel bars 8 between adjacent anchoring steel bars 9, the overall strength of the trench main structure is improved. Further, one end of each diagonal bracing steel bar 8 is fixed to the inner side of the vertical anchoring steel bar 9, and the other end is fixed to the intersection of the lower steel mesh 7 and the vertical anchoring steel bar 9, thereby forming a stable triangular support structure and enhancing the anti-deformation ability of the steel bar framework. Multiple X-shaped diagonal bracing steel bars 8 and vertical anchoring steel bars 9 form a rectangular steel bar framework, making the trench main structure stable and reliable, effectively resisting the lateral pressure and impact force during concrete pouring, ensuring the accurate position of the formwork, and greatly reducing the risks of deformation and displacement, thus solving the problem of the need to separately set up a formwork support system in the traditional method and achieving the technical effects of improving the construction efficiency and ensuring the construction quality.

[0048] In step S400, the welding height of the positioning horizontal support bars 6 includes: first using a laser level to measure the designed elevations of two groups of horizontal support bars 6 at the head and tail of the trench and making marks; horizontally placing a group of horizontal support bars 6 and aligning them with the marks on two groups of vertical anchoring steel bars 9 at the head of the trench, and welding and fixing the horizontal support bars 6 to the two groups of vertical anchoring steel bars 9 at the head of the trench by welding; horizontally placing the other group of horizontal support bars 6 and aligning them with the marks on two groups of vertical anchoring steel bars 9 at the tail of the trench, and welding and fixing the horizontal support bars 6 to the two groups of vertical anchoring steel bars 9 at the tail of the trench by welding; stretching two groups of marking lines between the two groups of horizontal support bars 6 at the head and tail of the trench, and the marking lines determine the horizontal height of each section of the trench bottom with a height difference; further, the marking lines are made of steel wires, which have the characteristics of high strength, good flexibility and light self-weight, and can avoid the problem of poor marking accuracy caused by insufficient strength and large self-weight and sagging after being tightened.

[0049] In step S500, when positioning and welding the horizontal support bars 6, the sides of the horizontal support bars 6 are respectively attached to two groups of correspondingly symmetrically arranged vertical anchoring steel bars 9, and the bottoms of the horizontal support bars 6 are respectively attached to the two groups of marking lines, so as to quickly realize the high-precision positioning of each section of the horizontal support bars 6 in the trench; welding the joints where the horizontal support bars 6 are attached to the vertical anchoring steel bars 9 to complete the fixing operation of multiple groups of horizontal support bars 6.

[0050] In step S600, when welding nuts at corresponding positions on the vertical anchoring steel bars 9, take the midpoint between the horizontal support bar 6 and the top of the corresponding vertical anchoring steel bar 9 to weld the nuts, and set the matching threaded ejector rods 5 to be threadedly connected, so that multiple groups of ejector rods 5 push and press against the center of the side of the formwork assembly 1, ensuring uniform force on the formwork assembly 1.

[0051] In step S700, when positioning the template component 1, a laser theodolite is used to project and mark the center axis of the groove on the horizontal support rib 6; the template component 1 is hoisted and placed on the top of the horizontal support rib 6, and is supported at the bottom by multiple groups of horizontal support ribs 6 that adapt to the height difference of the groove, so as to complete the precise positioning of the template component 1 in the vertical direction; turn the ejector rods 5 on the vertical anchor bars 9 on both sides of the center axis of the groove, so as to push the center axis of the template component 1 to be flush with the center axis of the groove, so that the template component 1 is located at the center of the groove, and complete the precise positioning of the template component 1 in the horizontal direction; screw out all the ejector rods 5, and resist both sides of the template component 1 synchronously, so as to press and fix the template component 1. By arranging the intervals of multiple groups of ejector rods 5 evenly, it is ensured that each section on the side of the template component 1 can be effectively fixed, and displacement in the horizontal direction due to stress during concrete pouring is avoided.

[0052] In step S800, the pressing plate 3 is made of steel plate, and through holes are opened at both ends thereof. The positions of the through holes correspond to the welding positions of the screw rods 2. The screw rods 2 pass through the pressing plate 3 through the corresponding through holes, and are locked with nuts, so that the top of the pressing plate 3 presses and fixes the top of the template component 1, avoiding the displacement of the template component 1 in the vertical direction during concrete pouring and ensuring the pouring accuracy.

[0053] The fixing method of the suspended formwork for the slender high-low difference groove of the present invention ensures the elevation of the bottom surface of the groove through the horizontal positioning rib 6, and precisely adjusts the axis position of the template component 1 through the ejector rod 5, solves the technical problems of low formwork positioning accuracy and cumbersome operation in the traditional method, and achieves the technical effects of ensuring the dimensional accuracy of the groove, improving the project quality, and reducing the later repair and rectification work.

[0054] The fixing method of the suspended formwork for the slender high-low difference groove of the present invention presses and fixes the template component 1 in the horizontal and vertical directions through the ejector rod 5 and the pressing plate 3 respectively, ensuring reliable fixing and convenient disassembly of the template component 1, solving the technical problems of inaccurate positioning by using iron wires for fixing and easy formwork running during concrete pouring in the traditional method, and producing the technical effects of standardized operation and improved work efficiency.

[0055] The fixing method of the suspended formwork for the slender high-low difference groove of the present invention forms a stable support system through the inclined support bars 8 and the horizontal positioning ribs 6 to enhance the strength of the main structure of the groove, effectively resist the lateral pressure and impact force during concrete pouring, ensure the accurate position of the template component 1, and greatly reduce the risk of deformation and displacement; solves the problem of the need to separately set up a formwork support system in the traditional method, and produces the technical effects of improving construction efficiency and ensuring construction quality.

[0056] In another embodiment of the present invention, a fixing system for the suspended formwork of a slender high-low difference groove is further provided. The system includes a template component 1, a main structure of the groove, screw rods 2, ejector rods 5, horizontal support ribs 6 and inclined support bars 8.

[0057] As shown Figure 2 in the figure, the template assembly 1 includes a bottom template 101, side templates 102, stiffening plates 103 and cover plates 104. The bottom template 101 is placed on the top of the horizontal support bars 6, and side templates 102 are symmetrically and fixedly arranged on both sides thereof; multiple groups of stiffening plates 103 are arranged in parallel on the top of the bottom template 101, and both ends thereof abut against the inner sides of the two groups of side templates 102 respectively; further, multiple groups of chutes are arranged on the inner sides of the side templates 102, and both ends of the stiffening plates 103 slide into the chutes, so that the quick installation and disassembly of the stiffening plates 103 can be realized; both ends of the bottom of the cover plate 104 are respectively fixedly arranged on the tops of the two groups of side templates 102, and they are arranged at a certain interval, further ensuring the stiffness of the template. By providing the stiffening plates 103 and the cover plates 104, the overall stiffness of the template assembly 1 is ensured and it is convenient to disassemble, solving the technical problem that the traditional template is too integral and easy to damage the concrete corners during disassembly, and producing the technical effects of improving the project quality, saving materials and being environmentally friendly.

[0058] The trench main structure includes an upper steel bar mesh 4, a lower steel bar mesh 7 and vertical anchoring steel bars 9; wherein, the anchoring steel bars 9 are symmetrically arranged on both sides of the axis of the trench, and multiple groups are arranged at intervals along the trench direction, and the upper steel bar mesh 4 and the lower steel bar mesh 7 are respectively fixedly arranged on the outer sides of the tops and the lower parts of the vertical anchoring steel bars 9.

[0059] The screw rod 2 is fixedly arranged on the top of the upper steel bar mesh 4, and both sides of the pressing plate 3 pass through the screw rod 2 and are placed on the top of the template assembly 1, and are locked with nuts.

[0060] The ejector rod 5 is threadedly connected to the vertical anchoring steel bar 9, and abuts against the middle part of the side of the template assembly 1, pushing the template assembly 1 to be adjusted to the designed axis position and pressing and fixing it.

[0061] The sides of the horizontal support bars 6 are respectively fixedly connected to two groups of vertically arranged and symmetrically arranged vertical anchoring steel bars 9, and multiple groups are provided. The horizontal heights of the multiple groups of horizontal support bars 6 are adapted to the horizontal heights of the bottoms of each section in the trench;

[0062] One end of the diagonal bracing steel bar 8 is fixed to the inner side of the vertical anchoring steel bar 9, and the other end is fixed to the intersection of the lower steel bar mesh 7 and the vertical anchoring steel bar 9. Multiple diagonal bracing steel bars 8 in an X shape form a rectangular steel bar framework with the vertical anchoring steel bars 9, making the trench main structure stable and reliable.

[0063] It is easy for those skilled in the art to understand that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for fixing a slender height difference groove hanging mold, characterized in that: The steps include: S100: Accurately measure and lay out the lines according to the design drawings to determine the groove position; S200: according to the depth and width of the trench, the frame reinforcement of the trench main structure is constructed, the vertical anchor reinforcement (9) is fixed on the foundation, and the upper reinforcement mesh (4) and the lower reinforcement mesh (7) are constructed on the top outer side and the lower part of the vertical anchor reinforcement (9) respectively; S300: Add a diagonal bracing steel bar (8), one end of which is fixed to the inner side of the vertical anchoring steel bar (9), and the other end is fixed to the junction of the lower steel mesh (7) and the vertical anchoring steel bar (9), thereby forming a stable triangular supporting structure and enhancing the deformation resistance of the steel skeleton; S400: Locate the welding height of the horizontal support ribs (6), determine the design elevations of the two groups of horizontal support ribs (6) at the head and tail of the groove according to the height difference of the groove design, and fix them, and draw a marking line between the two groups of horizontal support ribs (6) to determine the horizontal heights of the multiple groups of horizontal support ribs (6) in the groove; S500: The bottoms of the multiple groups of horizontal support ribs (6) in the groove are respectively aligned with the two groups of marking lines for height positioning, and are welded and fixed in sequence; S600: Weld a nut in the middle of the groove height direction of the vertical anchor steel bar (9), set a matching threaded top rod (5), and weld a screw rod (2) at the corresponding position on the top of the upper steel mesh (4); S700: Apply a mold release agent to the outer side of the template assembly (1), and place it on the horizontal support rib (6). Screw the top rod (5) to push the template assembly (1) to adjust it to the designed axis position. After completion, apply pressure on both sides to complete the precise positioning and fixation of the template assembly (1); S800: Pass both sides of the pressing plate (3) through the screw rod (2) and place it on the top of the formwork assembly (1), and lock it with nuts; after completion, pour concrete; S900: After the concrete is formed, loosen the nut and remove the pressing plate (3), dismantle the formwork assembly (1), clean it, and then cut off the screw rod (2) and the top rod (5) exposed on the concrete surface.

2. A method for fixing a slender height difference groove hanging formwork according to claim 1, characterized in that: In step S200, the anchoring steel bars (9) are symmetrically arranged on both sides of the center axis of the groove, and multiple groups are arranged at intervals along the direction of the groove, and their bottoms are pre-buried in the foundation and fixed together with the foundation by pouring concrete; the upper steel mesh (4) includes a first horizontal transverse rib and a first horizontal longitudinal rib, which are arranged at right angles at a certain interval, and all intersections are tied to form a mesh structure, and the nodes related to the screw (2) are reinforced by welding; one end of the first horizontal transverse rib and the vertical anchoring steel bar (9) are prefabricated at right angles; the lower steel mesh (7) includes a second horizontal transverse rib and a second horizontal longitudinal rib, which are arranged at right angles at a certain interval, and all intersections are tied to form a mesh structure, and the nodes where the second horizontal transverse rib and the second horizontal longitudinal rib intersect with the vertical anchoring steel bar (9) are reinforced by welding.

3. The method for fixing a slender height difference groove hanging formwork according to claim 2, characterized in that: In step S300, the number of the diagonal bracing steel bars (8) is matched with the number of the anchoring steel bars (9), and a plurality of X-shaped diagonal bracing steel bars (8) and the vertical anchoring steel bars (9) form a rectangular steel bar frame, so that the main structure of the trench is stable and reliable, effectively resisting the lateral pressure and impact force during concrete pouring, and ensuring the accurate position of the template.

4. A method for fixing a slender height difference groove hanging formwork according to any one of claims 1 to 3, characterized in that: In step S400, the positioning of the welding height of the horizontal support ribs (6) includes: using a laser level to first measure the design elevations of the two groups of horizontal support ribs (6) at the beginning and end of the groove, and marking them; placing one group of horizontal support ribs (6) horizontally, and aligning them with the marks on the two groups of vertical anchor steel bars (9) at the beginning of the groove, and welding the horizontal support ribs (6) to the two groups of vertical anchor steel bars (9) at the beginning of the groove by welding; placing another group of horizontal support ribs (6) horizontally, and aligning them with the marks on the two groups of vertical anchor steel bars (9) at the end of the groove, and welding the horizontal support ribs (6) to the two groups of vertical anchor steel bars (9) at the end of the groove by welding; and setting two groups of marking lines between the two groups of horizontal support ribs (6) at the beginning and end of the groove, and the marking lines determine the horizontal height of the bottom of each section in the groove with a height difference.

5. A method for fixing a slender height difference groove hanging formwork according to any one of claims 1 to 3, characterized in that: In step S500, when positioning and welding the horizontal support ribs (6), the sides of the horizontal support ribs (6) are respectively fitted with two groups of vertical anchoring steel bars (9) that are symmetrically arranged, and the bottoms of the horizontal support ribs (6) are respectively fitted with two groups of marking lines, thereby quickly achieving high-precision positioning of each section of the horizontal support ribs (6) in the groove; the joints between the horizontal support ribs (6) and the vertical anchoring steel bars (9) are welded to complete the fixing operation of multiple groups of horizontal support ribs (6).

6. A method for fixing a slender height difference groove hanging formwork according to any one of claims 1 to 3, characterized in that: In step S600, when welding nuts at corresponding positions on the vertical anchoring steel bars (9), a nut is welded at the middle point between the horizontal support bars (6) and the top of the corresponding vertical anchoring steel bars (9), and is threadedly connected to the top rods (5), so that multiple groups of top rods (5) push and press against the center of the side of the formwork assembly (1) to ensure that the formwork assembly (1) is evenly stressed.

7. A method for fixing a slender height difference groove hanging formwork according to any one of claims 1 to 3, characterized in that: In step S700, when positioning the template assembly (1), a laser theodolite is used to project and mark the center axis of the groove on the horizontal support rib (6); the template assembly (1) is hoisted to the top of the horizontal support rib (6), and supported by multiple groups of horizontal support ribs (6) adapted to the height difference of the groove, thereby completing the precise positioning of the template assembly (1) in the vertical direction; the top rod (5) on the vertical anchor steel bars (9) on both sides of the center axis of the groove is twisted, thereby pushing the center axis of the template assembly (1) to be flush with the center axis of the groove, so that the template assembly (1) is located at the center of the groove, completing the precise positioning of the template assembly (1) in the horizontal direction.

8. A method for fixing a slender height difference groove hanging formwork according to any one of claims 1 to 3, characterized in that: In step S800, the pressing plate (3) is made of a steel plate with through holes at both ends thereof, the positions of the through holes corresponding to the welding positions of the screw rod (2), the screw rod (2) passes through the pressing plate (3) through the corresponding through holes, and is locked with nuts so that the top of the pressing plate (3) is pressed and fixed to the top of the formwork assembly (1), thereby avoiding displacement of the formwork assembly (1) in the vertical direction during concrete pouring and ensuring the pouring accuracy.

9. A fixing system for a slender groove hanging formwork with a height difference, obtained by adopting the fixing method for a slender groove hanging formwork with a height difference according to any one of claims 1 to 8, characterized in that: include: The groove body comprises an upper steel mesh sheet (4), a lower steel mesh sheet (7) and vertical anchor steel bars (9); wherein the anchor steel bars (9) are symmetrically arranged on both sides of the groove centerline, and a plurality of groups are arranged at intervals along the groove direction, and the upper steel mesh sheet (4) and the lower steel mesh sheet (7) are respectively fixedly arranged on the top outer side and the lower part of the vertical anchor steel bars (9); A screw rod (2) is fixedly arranged on the top of the upper steel mesh (4), and the two sides of the pressure plate (3) pass through the screw rod (2) and are placed on the top of the template assembly (1), and are locked with nuts; A top rod (5) threadedly connected to the vertical anchoring steel bar (9) contacts the middle of the side of the formwork assembly (1), pushes the formwork assembly (1) to adjust to the designed axis position and applies pressure to fix it; Horizontal support bars (6) for supporting the bottom of the template assembly (1), the sides of the horizontal support bars (6) are respectively fixedly connected to two groups of vertical anchoring steel bars (9) that are symmetrically arranged, and multiple groups are provided, and the horizontal heights of the multiple groups of horizontal support bars (6) are adapted to the horizontal heights of the bottoms of the various sections in the groove; And a diagonal bracing steel bar (8), one end of which is fixed to the inner side of the vertical anchoring steel bar (9), and the other end of which is fixed to the intersection of the lower steel mesh (7) and the vertical anchoring steel bar (9). A plurality of X-shaped diagonal bracing steel bars (8) and the vertical anchoring steel bars (9) form a rectangular steel bar frame, so that the main structure of the groove is stable and reliable.

10. A fixing system for a slender height difference groove hanging formwork according to claim 9, characterized in that: The template assembly (1) comprises a bottom template (101), a side template (102) and a stiffening plate (103); the bottom template (101) is placed on the top of the horizontal support rib (6), and the side templates (102) are symmetrically fixed on both sides of the bottom template (101); a plurality of stiffening plates (103) are arranged in parallel on the top of the bottom template (101), and the two ends of the stiffening plates (103) respectively abut against the inner sides of the two groups of side templates (102); the two ends of the bottom of the cover plate (104) are respectively fixed on the top of the two groups of side templates (102), and are spaced apart at a certain distance.

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