High-low span single-side formwork supporting structure and high-low span simultaneous construction method

Abstract

The invention discloses a high-low span single-side formwork supporting structure and a high-low span simultaneous construction method.The structure comprises a formwork assembly, the formwork assembly comprises a first side face and a second side face, the first side face is arranged facing a high-low span construction face and provided with a first installation position, and the second side face is arranged back to the high-low span construction face and provided with a second installation position; the second side surface is provided with a second mounting position; the first reinforcing member is provided with a first end and a second end, the first end and the second end form a pair of free ends of the first reinforcing member, the first end is fixed with the first mounting position, and the second end is fixed with a high-low span construction surface; the second reinforcing piece is provided with a third end and a fourth end, the third end and the fourth end form a pair of free ends of the second reinforcing piece, the third end is fixedly connected with the second mounting position, and the fourth end is fixed to the mounting face away from the second side face. The technical problems that pouring is not compact and the concrete strength is not high due to the fact that multiple times of pouring are adopted in traditional construction with too large high-low spans to generate time intervals are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of engineering construction, and more specifically, relates to a high-low span single-side formwork support structure and a high-low span simultaneous construction method. Background Art

[0002] In the process of building construction, sometimes we will encounter the situation that the height difference of the construction plane is too large. For such a large height span construction, multiple pouring methods are generally used for construction. However, multiple pouring will lead to loose concrete pouring, and cold joints will appear between each section of poured concrete, which seriously affects the strength and airtightness of the concrete structure. There are many disadvantages of the existing high and low span concrete pouring scheme;

[0003] It can be seen that how to provide a side wall formwork reinforcement method that can adapt to various spans to complete concrete pouring, ensure that the concrete is formed in one go under the conditions of high and low spans, and thus improve the quality of concrete pouring, is a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a high-low span single-sided formwork support structure and a high-low span simultaneous construction method, by arranging a formwork on the opposite side of the construction surface of the high and low spans, so that the construction surface of the high and low spans and the formwork form an integrated pouring space that can be poured, and then pouring is carried out in the integrated pouring space, so that the pouring of the high and low span areas can be completed at one time, which solves the technical problem that the traditional construction of high and low spans that are too large uses multiple pourings to produce time intervals, resulting in loose pouring and low concrete strength.

[0005] In order to achieve the above technical effects, according to a first aspect of the present invention, a high-low span formwork support structure is provided, which is used for integrally pouring a construction surface forming a high-low span, comprising:

[0006] A formwork assembly, the formwork assembly is arranged on the opposite side of the construction surface of the high-low span, the formwork assembly includes a first side surface and a second side surface, the first side surface and the second side surface form the front and back sides of the formwork assembly, the first side surface is arranged facing the construction surface of the high-low span, the first side surface is provided with a first installation position, the second side surface is arranged facing away from the construction surface of the high-low span, and the second side surface is provided with a second installation position;

[0007] A first reinforcement member, wherein the first reinforcement member has a first end and a second end, the first end and the second end constitute a pair of free ends of the first reinforcement member, the first end is fixed to the first installation position, and the second end is fixed to the construction surface of the high and low span;

[0008] The second reinforcement member has a third end and a fourth end, the third end and the fourth end constitute a pair of free ends of the second reinforcement member, the third end is fixedly connected to the second mounting position, and the fourth end is fixed to the mounting surface away from the second side surface.

[0009] In the first aspect, the first reinforcement member includes a plurality of tension bolt members;

[0010] The plurality of tension bolts are arranged at equal intervals along the height direction of the formwork assembly;

[0011] Each of the tension bolt members includes: a first rod and a bolt, one end of the first rod is inserted into the interior of the high-low span construction surface, and the other end of the rod penetrates the template and is fastened by the bolt.

[0012] In the first aspect, there are a plurality of second reinforcement members, which are obliquely disposed between the template and the mounting surface, and each reinforcement member forms a triangle with the mounting surface and the template.

[0013] In the first aspect, each of the second reinforcement members is a second rod, and the lengths of the plurality of second rods are increased successively, so that the area of ​​the triangle formed by the corresponding second rod, the mounting surface and the template is increased successively.

[0014] In the first aspect, the installation surface is constituted by the top surface of the raft foundation, and the top surface of the raft foundation forms a plurality of connection positions, and each of the connection positions corresponds to an end of the second rod away from the template.

[0015] In the first aspect, the support structure further comprises embedded parts;

[0016] The connection position is provided with a connection hole, one end of the embedded part is inserted into the connection hole, and the other end of the embedded part is exposed outside the connection hole and forms a support position, and the end of the second rod away from the template abuts against the support position.

[0017] In the first aspect, the high-low span construction surface is composed of an outer facade of a poured concrete foundation, and a roll waterproofing layer is laid on the side of the concrete foundation adjacent to the high-low span construction surface.

[0018] In the first aspect, the support structure further includes an expansion water stop strip, which is arranged in the construction surface of the high-low span and is located at a position where the first rod penetrates into the construction surface of the high-low span.

[0019] In the first aspect, the template assembly is composed of a plurality of split plates, and two adjacent plates are detachably connected.

[0020] In a second aspect, the present invention provides a method for simultaneous construction of high and low spans, the method being applied to any of the high and low span single-sided formwork support structures described above, the method comprising:

[0021] Step S1, setting a thick brick membrane on the side of the raft foundation and painting it, and supporting a formwork assembly on the upper part of the raft foundation, so that the formwork assembly is arranged opposite to the construction surface of the high and low spans; supporting the formwork assembly on the upper part of the raft foundation includes arranging a plurality of first reinforcement members between the formwork and the construction surface of the high and low spans, so that one end of the first reinforcement member is passed through the construction surface of the high and low spans, and the other end is passed through the formwork assembly, so that a casting space is formed between the formwork and the construction surface of the high and low spans;

[0022] Step S2, providing a waterproof cushion layer on the facade of the high-low span, and providing an expansion water stop strip at the position where the first reinforcement member penetrates to the high-low span construction surface;

[0023] Step S3, pouring the pouring space.

[0024] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0025] 1. The high-low span formwork support structure of the present invention sets formwork on the opposite side of the high-low span construction surface, so that the high-low span construction surface and the formwork form an integrated pouring space that can be poured, and then pouring is carried out in the integrated pouring space, so that the pouring of the high-low span area can be completed at one time, which solves the technical problem that the traditional construction of too large high-low span adopts multiple pouring to produce time intervals, thereby causing loose pouring and low concrete strength.

[0026] 2. At the same time, a first reinforcement member and a second reinforcement member are provided. The first reinforcement member is used to connect the template and the opposite sides of the high and low spans to form a stable integrated casting space. The second reinforcement member is used to support the template, so that the template installation structure can be relatively stable when the integrated casting space is being cast. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The structure of the high and low span template support structure in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0028] Figure 2 The structure of the high and low span template support structure in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0029] Figure 3 It is a flowchart of a method for simultaneous construction of high and low spans in an embodiment of the present invention;

[0030] Description of reference numerals:

[0031] 1. Waterstop steel plate;

[0032] 2. A first reinforcement member;

[0033] 3. A second reinforcement member;

[0034] 4. Embedded parts;

[0035] 5. Expansion water stop strip;

[0036] 6. Raft foundation;

[0037] 7. Concrete foundation;

[0038] 8. Thick brick mold;

[0039] 9. Template components;

[0040] 10. Rolled waterproof layer. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with 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 intended 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.

[0042] Embodiment 1:

[0043] like Figure 1-2 As shown, the first embodiment of the present invention proposes a high-low span template support structure for integrally casting a construction surface forming a high-low span, and the support structure includes: a template assembly 9, a first reinforcement member 2 and a second reinforcement member 3;

[0044] Wherein, the formwork assembly 9 is arranged on the opposite side of the construction surface of the high and low span to form a casting space, and the formwork assembly 9 includes a first side surface and a second side surface, the first side surface and the second side surface form the front and back sides of the formwork assembly 9, the first side surface is arranged facing the construction surface of the high and low span, and the first side surface is provided with a first installation position, the second side surface is arranged back to the construction surface of the high and low span, and the second side surface is provided with a second installation position; the first reinforcement 2 has a first end and a second end, the first end and the second end constitute a pair of free ends of the first reinforcement 2, the first end is fixed to the first installation position, and the second end is fixed to the construction surface of the high and low span; the second reinforcement 3 has a third end and a fourth end, the third end and the fourth end constitute a pair of free ends of the second reinforcement 3, the third end is fixedly connected to the second installation position, and the fourth end is fixed to the installation surface away from the second side surface.

[0045] Specifically, the high-low span formwork support structure of this embodiment forms an integrated pouring space for pouring by setting a formwork on the opposite side of the high-low span construction surface, and then pouring is performed in the integrated pouring space, so that the high-low span area can be poured at one time, solving the technical problem that the traditional construction of too large high-low spans uses multiple pourings to produce time intervals, resulting in loose pouring and low concrete strength. At the same time, a first reinforcement member 2 and a second reinforcement member 3 are also provided, and the formwork and the opposite side of the high-low span are connected by the first reinforcement member 2 to form a stable integrated pouring space. The formwork is supported by the second reinforcement member 3, so that the installation structure of the formwork can be relatively stable when the integrated pouring space is poured.

[0046] In another design concept, the formwork assembly 9 is the core part of the present invention, which is placed on the opposite sides of the high and low span construction surfaces. This assembly includes a first side surface and a second side surface. The first side surface faces the construction surface and is used to directly contact and support the casting material; while the second side surface faces away from the construction surface and is used to provide additional support. On the first side surface, we designed a first mounting position for connecting the first reinforcement 2; on the second side surface, we designed a second mounting position for connecting the second reinforcement 3.

[0047] The first reinforcement member 2 is designed to provide additional stability and strength. It has two ends, the first end is connected to the first mounting position of the formwork assembly 9, and the second end is fixed to the construction surface of the high and low spans. Such a design ensures the stability of the formwork assembly 9 during the pouring process.

[0048] The second reinforcement member 3 also has two end points, the third end is fixed to the second mounting position of the formwork assembly 9, and the fourth end is fixed to the mounting surface away from the second side surface. This configuration provides additional support to ensure the stability and safety of the entire structure during the pouring process.

[0049] In practical applications, the high-low span formwork support structure can be connected together by bolts, welding or other appropriate fixing methods. The material of the formwork assembly 9 can be wood, metal or any other solid material suitable for building construction. The reinforcement can also be selected from different materials and sizes as needed to adapt to different construction requirements and span sizes.

[0050] In general, the high-low span formwork support structure of the present invention provides a simple and effective solution for realizing integrated casting in high-low span construction, thereby improving construction efficiency and structural stability.

[0051] In a preferred embodiment, the first reinforcement member 2 includes a plurality of tension bolt members;

[0052] A plurality of tension bolts are arranged at equal intervals along the height direction of the formwork assembly 9;

[0053] Each tension bolt member includes: a first rod member and a bolt. One end of the first rod member is inserted into the interior of the high and low span construction surface, and the other end of the rod member penetrates the template and is fastened by the bolt.

[0054] In a preferred embodiment, there are multiple second reinforcement members 3, which are obliquely arranged between the template and the mounting surface, and each reinforcement member forms a triangle with the mounting surface and the template.

[0055] In a preferred embodiment, each second reinforcement member 3 is a second rod, and the lengths of the plurality of second rods are increased successively, so that the area of ​​the triangle formed by the corresponding second rod, the mounting surface and the template is increased successively.

[0056] In a preferred embodiment, the mounting surface is formed by the top surface of the raft foundation 6, and the top surface of the raft foundation 6 forms a plurality of connection positions, each of which corresponds to an end of the second rod away from the template.

[0057] In a preferred embodiment, the support structure further includes an embedded part 4;

[0058] A connection hole is provided on the connection position, one end of the embedded component 4 is inserted into the connection hole, and the other end of the embedded component 4 is exposed outside the connection hole and forms a support position, and the end of the second rod away from the template is against the support position.

[0059] In a preferred embodiment, the high-low span construction surface is composed of an outer facade of a poured concrete foundation 7, and a roll waterproofing layer 10 is laid on the side of the concrete foundation 7 adjacent to the high-low span construction surface.

[0060] In a preferred embodiment, the support structure further includes an expansion water stop strip 5, which is arranged in the construction surface of the high and low spans and is located at a position where the first rod penetrates into the construction surface of the high and low spans.

[0061] In a preferred embodiment, the template assembly 9 is composed of a plurality of split plates, and two adjacent plates are detachably connected.

[0062] In the above preferred embodiment, we further optimized the high-low span formwork support structure to improve its stability and adaptability. Specifically, we used a plurality of tension bolts as the first reinforcement member 2, and these bolts were arranged at equal intervals along the height direction of the formwork assembly 9 to ensure uniform stress on the entire structure.

[0063] Each tension bolt member includes a first rod and a bolt. One end of the first rod passes through the interior of the high and low span construction surface, while the other end penetrates the formwork assembly 9 and is fastened by a bolt. This design allows the tension bolt member to provide a strong connection between the construction surface and the formwork, thereby enhancing the stability of the entire structure.

[0064] The second reinforcement members 3 are designed as a plurality of inclined rods, which form a triangular structure with the template and the installation surface. The triangular structure increases the strength of the supporting structure due to its inherent stability. The length of each second reinforcement member 3 increases successively, so that the area of ​​the triangle formed by them also increases successively, thereby providing adaptive support for construction surfaces of different heights.

[0065] In order to further enhance the stability, we set connection positions on the top surface of the raft foundation 6, and these connection positions are provided with connection holes. One end of the embedded part 4 is inserted into these connection holes, and the other end is exposed outside the connection holes to form a support position. The end of the second rod away from the template is against these support positions, thereby ensuring the stability of the support structure.

[0066] On the facades of the high and low span construction surfaces, we designed a surface consisting of a poured concrete foundation 7, and laid a membrane waterproofing layer 10 on the adjacent sides. This design not only provides additional support, but also helps prevent moisture penetration and protect the durability of the structure. At the same time, a water stop steel plate 1 is also provided on the facade of the low span.

[0067] In order to improve the waterproof performance, we set expansion water stop strips 5 inside the high and low span construction surfaces, which are located at the position where the first rod penetrates into the construction surface. The expansion water stop strips 5 can expand during the concrete pouring process, thereby providing a sealing effect to prevent water penetration.

[0068] Finally, the template assembly 9 is composed of a plurality of split plates, which are connected by a detachable connection. This design makes the template assembly 9 easy to assemble and disassemble, convenient for rapid deployment and recovery at different construction sites, and improves construction efficiency.

[0069] In summary, the preferred embodiment of the present invention provides a high-low span formwork support structure that is both stable and adaptable through carefully designed components and connection methods, and is suitable for construction requirements of various high and low spans.

[0070] Embodiment 2:

[0071] like Figure 3 As shown, the present invention provides a method for simultaneous construction of high and low spans, the method being applied to a high and low span single-side formwork support structure, the method comprising:

[0072] Step S1, a thick brick membrane 8 is arranged on the side of the raft foundation 6 and painted, and a template assembly 9 is supported on the upper part of the raft foundation 6, so that the template assembly 9 is arranged opposite to the construction surface of the high and low spans; the template assembly 9 is supported on the upper part of the raft foundation 6, including arranging a plurality of first reinforcement members 2 between the template and the construction surface of the high and low spans, so that one end of the first reinforcement member 2 is penetrated to the construction surface of the high and low spans, and the other end is penetrated out of the template assembly 9, so that a casting space is formed between the template and the construction surface of the high and low spans;

[0073] Step S2, providing a waterproof cushion layer on the facade of the high and low spans, and providing an expansion water stop strip 5 at the position where the first reinforcement member 2 penetrates to the high and low span construction surface;

[0074] Step S3, pouring the pouring space.

[0075] In the above-mentioned embodiment 2, for step S1, first, a thick brick membrane 8 is set on the side of the raft foundation 6 and painted to provide a stable lateral support. Then, a template assembly 9 is supported on the upper part of the raft foundation 6 to ensure that the template assembly 9 is set opposite to the construction surface of the high and low spans to form the required construction surface. A plurality of first reinforcement members 2, such as tension bolts, are set between the template and the construction surface of the high and low spans. One end of these reinforcement members is penetrated to the construction surface of the high and low spans, and the other end is penetrated out of the template assembly 9, thereby forming a casting space between the template and the construction surface. This step ensures the stability of the template assembly 9 and provides the necessary space for subsequent casting work. For step S2, a waterproof cushion layer is set on the facade of the high and low spans to prevent moisture penetration and protect the durability of the structure. An expansion water stop strip 5 is set at the position where the first reinforcement member 2 is penetrated to the construction surface of the high and low spans. These water stop strips will expand during the concrete pouring process to form a sealing effect to further prevent moisture penetration. For step S3, after completing the above preparations, the pouring space is poured. This step is a key link in the entire construction process, and it is necessary to ensure the uniformity and density of the concrete to ensure the strength and stability of the structure.

[0076] Embodiment three:

[0077] like Figure 2 As shown, step A1: In this scheme, the height difference between the high and low spans is 3200mm, and the thickness of the raft foundation 6 is 950mm. First, a 240 thick brick formwork 8 is built on the outside of the low span raft and painted, and then a formwork assembly for backfilling concrete of the high and low spans is supported on the brick formwork. A first reinforcement member 2 of A16 is reserved at a vertical and horizontal spacing of 450 in the height direction of the formwork. A wire rod can be used, and the exposed wire rod length is 950 wall thickness + 250mm. After the backfilling of concrete is completed, the formwork can be removed.

[0078] Step A2: Construct a rolled waterproof layer 10 on the horizontal cushion layer and the vertical backfill concrete cushion layer. Since the reserved drawing rod has to pass through the rolled waterproof layer 10, the part where the drawing rod passes through the waterproof layer is a weak link that is prone to leakage. This technical solution borrows the method for treating the steel bar waterproofing of the pile head of reinforced concrete bored piles, which is to wrap a circle of expansion waterstop strip 5 around the root of the tension bolt, which can effectively solve the problem of leakage caused by the drawing rod passing through the waterproofing.

[0079] Step A3: In this scheme, the height difference between the high and low spans is 3200mm. Based on the principle of constructing the low span first and then the high span, when constructing the low span raft foundation, it is necessary to reserve A25 embedded parts 4 on the raft foundation in advance. Threaded steel bars can be used with an exposed length of 200mm. The first row is 1480mm away from the wall, the second row is 1000mm away from the first row, and the third row is 1000mm away from the second row.

[0080] Step A4: After the low-span raft foundation 6 is poured with concrete, the vertical wall formwork assembly 9 between the high and low spans is supported. The vertical wall formwork between the high and low spans is first reinforced with the reserved longitudinal formwork spacing of 450 for the wire drawing rod. After the reinforcement of the wire drawing formwork is completed, the pre-reserved embedded parts 4 are used as support points, and the second reinforcement member 3 is used for three-way support. The second reinforcement member can be an A48 round steel pipe. The 500mm concrete anti-slope reserved water-stop steel plate 1 on the high-span raft is first reinforced with the wire drawing rod, and then the A48 round steel pipe top support is set obliquely to complete the support of the entire high and low span formwork.

[0081] Through the above steps, the construction method of the present invention realizes the simultaneous construction of high and low span structures, improves the construction efficiency, and effectively improves the waterproof performance of the structure by setting the waterproof cushion layer and the expansion water stop strip 5. This method is suitable for various high and low span construction requirements and has good practicality and promotion value.

[0082] It will be easily understood by those skilled in the art that the above are only preferred embodiments of the present invention and are 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 in the protection scope of the present invention.

Claims

1. A high-low span formwork support structure, used for integrally casting a construction surface forming a high-low span, characterized in that: include: A formwork assembly (9), the formwork assembly (9) being arranged on opposite sides of the high-low span construction surface, comprising a first side surface and a second side surface, the first side surface and the second side surface forming the front and back sides of the formwork assembly (9), the first side surface being arranged facing the high-low span construction surface, the first side surface being provided with a first installation position, the second side surface being arranged facing away from the high-low span construction surface, the second side surface being provided with a second installation position; A first reinforcing member (2), comprising a first end and a second end, wherein the first end and the second end constitute a pair of free ends of the first reinforcing member (2), the first end is fixed to the first mounting position, and the second end is fixed to the construction surface of the high and low span; And a second reinforcing member (3), which has a third end and a fourth end, the third end and the fourth end constitute a pair of free ends of the second reinforcing member (3), the third end is fixedly connected to the second mounting position, and the fourth end is fixed to the mounting surface away from the second side surface.

2. The high-low span single-side formwork support structure according to claim 1 is characterized in that: The first reinforcement member (2) comprises a plurality of tension bolt members; The plurality of tension bolts are arranged at equal intervals in the height direction of the template assembly (9); Each of the tension bolt members includes: a first rod and a bolt, one end of the first rod is inserted into the interior of the high-low span construction surface, and the other end of the rod penetrates the template and is fastened by the bolt.

3. The high-low span single-side formwork support structure according to claim 1 is characterized in that: The second reinforcement members (3) are multiple and are obliquely arranged between the template and the mounting surface, and each reinforcement member forms a triangle with the mounting surface and the template.

4. The high-low span single-side formwork support structure according to claim 3 is characterized in that: Each of the second reinforcement members (3) is a second rod, and the lengths of the plurality of second rods are increased in sequence, so that the area of ​​the triangle formed by the corresponding second rod, the mounting surface and the template is increased in sequence.

5. The high-low span single-side formwork support structure according to any one of claims 1 to 4, characterized in that: The installation surface is formed by the top surface of the raft foundation (6), and the top surface of the raft foundation (6) forms a plurality of connection positions, and each of the connection positions corresponds to an end of the second rod member away from the template.

6. The high-low span single-side formwork support structure according to any one of claims 1 to 4, characterized in that: The supporting structure also includes embedded parts (4); The connection position is provided with a connection hole, one end of the embedded component (4) is inserted into the connection hole, and the other end of the embedded component (4) is exposed outside the connection hole and forms a support position, and the end of the second rod away from the template abuts against the support position.

7. The high-low span single-side formwork support structure according to any one of claims 1 to 4, characterized in that: The high-low span construction surface is composed of the outer facade of a poured concrete foundation (7), and a roll waterproofing layer (10) is laid on the side of the concrete foundation (7) adjacent to the high-low span construction surface.

8. The high-low span single-side formwork support structure according to any one of claims 1 to 4, characterized in that: The support structure further comprises an expansion water stop strip (5), which is arranged in the construction surface of the high-low span and is located at a position where the first rod penetrates into the construction surface of the high-low span.

9. The high-low span single-side formwork support structure according to any one of claims 1 to 4, characterized in that ； The template assembly (9) is composed of a plurality of split plates, and two adjacent plates are detachably connected.

10. A method for simultaneous construction of high and low spans, characterized in that: The method is applied to the high-low span single-side formwork support structure according to any one of claims 1 to 9, and the method comprises: Step S1, setting a thick brick membrane on the side of the raft foundation and painting it, and supporting a formwork assembly on the upper part of the raft foundation, so that the formwork assembly is arranged opposite to the construction surface of the high and low spans; supporting the formwork assembly on the upper part of the raft foundation includes arranging a plurality of first reinforcement members between the formwork and the construction surface of the high and low spans, so that one end of the first reinforcement member is passed through the construction surface of the high and low spans, and the other end is passed through the formwork assembly, so that a casting space is formed between the formwork and the construction surface of the high and low spans; Step S2, providing a waterproof cushion layer on the facade of the high-low span, and providing an expansion water stop strip at the position where the first reinforcement member penetrates to the high-low span construction surface; Step S3, pouring the pouring space.

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