Integrated formwork for bridge joint concrete construction

Abstract

The utility model discloses an integrated formwork for bridge joint concrete construction, and belongs to the technical field of bridge joint construction. An integrated formwork for bridge joint concrete construction comprises a bottom formwork body made of high-strength plastic, and the bottom formwork body is formed by hinging two formwork bodies. The hanging piece is used for hanging and fixing the formwork, and the formwork is connected with the bridge body close to the formwork through the hanging piece; the hanging piece comprises a telescopic supporting rod arranged on the upper portion of the bridge body and a connecting piece used for connecting the supporting rod and the formwork. According to the utility model, the bottom die is fixed by arranging the corresponding hanging pieces between the two bridge bodies needing to be seamed, so that the hanging pieces are not influenced by the width of the seam and can be recycled for a long time, and the recycling times of the device can be increased by matching with the high-strength plastic bottom die; therefore, the problem that in the prior art, resources and manpower are wasted due to the fact that formworks are adopted when bridge joints are prefabricated is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge joint construction, in particular to an integrated template for bridge joint concrete construction. Background Art

[0002] At present, the joint formwork of bridge construction is usually constructed with a hanging formwork. First, the bamboo plywood is cut into strips as the joint bottom formwork, and then a large number of square timbers and steel pipes are cut into long horizontal frames according to the width of the joint and placed at the joint to act as hanging beams. Two tension bolts are symmetrically inserted into the bottom formwork, and the nuts are screwed on after the lower ends of the tension bolts pass through the bottom formwork. Then the upper ends of the tension bolts are inserted between the double rows of square timbers or steel pipes, and then the nuts are screwed on to fix the tension bolts. The length of the tension bolts at the upper end is adjusted according to the joint height to about 10 cm above the concrete surface, and square timber pads are set under the double rows of square timbers or steel pipes.

[0003] The above method consumes a large amount of bamboo plywood, square timber, steel pipes and other materials, and the bamboo plywood is not durable. After being used two or three times, it cannot be used as a bottom mold, resulting in a waste of the board. At the same time, if the joints of the cut square timber and steel pipe are wide during the subsequent construction process, the original square timber and steel pipe may not be able to be used, and the square timber or steel pipe needs to be re-cut, resulting in a waste of resources and manpower, so improvements are needed. Utility Model Content

[0004] The utility model aims to solve the problem that the templates used in the prior art for prefabricating bridge joints waste resources and manpower, and proposes an integrated template for bridge joint concrete construction.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An integrated formwork for bridge joint concrete construction, comprising a bottom formwork made of high-strength plastic, wherein the bottom formwork is composed of two formworks hinged to each other;

[0007] Also included is a hanger for hanging and fixing the template, wherein the hanger connects the template to a bridge body near the template;

[0008] The hanging member comprises a telescopic supporting rod arranged on the upper part of the bridge body, and a connecting member used for connecting the supporting rod and the template.

[0009] Preferably, the template is a high-strength plastic template, and the bottoms of the two templates are hinged by hinges.

[0010] Preferably, the support rod includes a support plate and a sleeve, the support plate is provided with a straight slot, the support plate is slidably disposed in the sleeve, and is limited by a first bolt.

[0011] Preferably, a pad is provided at the lower part of one end of the support plate, the pad and the support plate are limited by a second bolt, and the pad is placed on the bridge body.

[0012] Preferably, the connecting member comprises a long bolt, after the bottom end of the long bolt passes through the end of the sleeve and the corresponding template, nuts are screwed on both ends to connect the template to the lower part of the bridge body.

[0013] Preferably, a rubber pad is provided at the bottom of the cushion block.

[0014] Preferably, a sleeve is sleeved on the long bolt, and the sleeve is located above the template.

[0015] Compared with the prior art, the utility model provides an integrated formwork for bridge joint concrete construction, which has the following beneficial effects.

[0016] 1. The utility model fixes the bottom formwork by arranging corresponding hanging parts between two bridge bodies that need to be joined, so that the hanging parts are not affected by the width of the joint and can be recycled for a long time. In combination with a high-strength plastic bottom formwork, the number of recycling times of the device can be increased, thereby solving the problem of waste of resources and manpower in the templates used in the prior art for prefabricating bridge joints.

[0017] 2. The utility model adopts high-strength plastic as the bottom mold, which can be used more than 30 times and can be recycled. Compared with the traditional bamboo plywood, this bottom mold is more durable and environmentally friendly, reducing resource waste.

[0018] 3. The utility model can make the device unaffected by the width of the joint by respectively arranging hangers on the two bridge bodies, thereby avoiding the problem that the previously cut square timber or steel pipe cannot be used and needs to be cut again, thereby saving material resources and human resources.

[0019] 4. The utility model adopts two mutually hinged templates to form a base film, which can be folded during transportation, making it easy to carry.

[0020] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on the following examination and study to some extent; or, may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the installation structure of the utility model.

[0022] Figure 2 It is a schematic diagram of the installation structure of the utility model.

[0023] Figure 3 It is a schematic diagram of the overall structure of the utility model.

[0024] Figure 4 It is a structural schematic diagram of the hanging member in the utility model.

[0025] Figure 5 It is a schematic diagram of the disassembled structure of the hanging piece in the utility model.

[0026] Figure 6 It is a structural schematic diagram of the bottom mold of the utility model.

[0027] In the figure:

[0028] 1. Template; 2. Casing; 3. Bridge body; 4. Sleeve; 5. Pad; 6. Support plate; 7. Long bolt; 8. Hinge; 9. Straight slot; 10. First bolt; 11. Second bolt; 12. First through hole; 13. Second through hole; 14. Third through hole. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0030] Reference Figure 1-6 , an integrated formwork for bridge joint concrete construction, comprising a bottom formwork made of high-strength plastic, the bottom formwork being composed of two formworks 1 hinged to each other;

[0031] It also includes a hanger for hanging and fixing the template 1, and the hanger connects the template 1 to a bridge body 3 close to the template 1;

[0032] The hanging member includes a retractable support rod arranged on the upper part of the bridge body 3 and a connecting member for connecting the support rod and the template 1.

[0033] In a specific embodiment of the present invention, the bottom mold is located below the joint of the two bridge bodies 3, and the upper surface of the bottom mold is in contact with the bottom surface of the joint of the bridge body 3; and the corresponding number of bottom molds is selected according to the length of the joint;

[0034] A bottom mold is composed of two templates 1 hinged to each other, which can be folded up during transportation for easy transportation;

[0035] One of the templates 1 is connected to the bridge body 3 close to it through a number of hangers, and the other template 1 is connected to another bridge body 3 through a number of hangers. The number of hangers on the two templates 1 is the same and they are symmetrically arranged; in this embodiment, one template 1 corresponds to three hangers.

[0036] The template 1 is made of high-strength plastic template, and the bottoms of the two templates 1 are hinged by hinges 8;

[0037] High-strength plastic formwork has the characteristics of non-absorbent, corrosion-resistant, high temperature resistant, impact-resistant, high strength, can be sawed, planed, nailed, and non-deformed; under normal circumstances, it can be recycled more than thirty times and can be replaced with a new one; compared with using bamboo plywood as the base formwork, it can save costs.

[0038] The support rod includes a support plate 6 and a sleeve 4. A straight slot 9 is provided on the support plate 6. The support plate 6 is slidably arranged in the sleeve 4 and is limited by a first bolt 10. A first through hole 12 is provided on the end of the sleeve 4 away from the joint, and a plurality of fourth through holes 15 are provided on the support plate 6 near the sleeve 4. When limiting the support plate 6 and the sleeve 4, the first bolt 10 is inserted into the fourth through hole 15 and the first through hole 12 and then a matching nut is used to achieve the effect of limiting the sleeve 4 and the support plate 6. The first bolt 10 is inserted into the fourth through hole 15 at different positions to achieve the effect of adjusting the overall length of the two.

[0039] This arrangement can be used to adjust the length of the support rod, which is convenient for adjusting the position of the bottom mold during the subsequent installation of the bottom mold, or when the joint is relatively wide, it can be used to adjust the distance between the connecting piece and the side of the bridge body 3, thereby achieving a stronger adaptability of the support rod.

[0040] A pad 5 is arranged at the lower part of one end of the support plate 6, and the pad 5 and the support plate 6 are limited by a second bolt 11, and the pad 5 is placed on the bridge body 3; the second bolt 11 is fixedly arranged on the pad 5, and after the second bolt 11 passes through the lower part of the straight slot 9 and comes out from the upper part, the matching nut is screwed on to realize the fixation between the pad 5 and the support plate 6; through this arrangement, the position of the pad 5 fixed on the support plate 6 can be adjusted.

[0041] The connecting part includes a long bolt 7. After the bottom end of the long bolt 7 passes through the end of the sleeve 4 and the corresponding template 1, nuts are screwed on both ends to connect the template 1 with the lower part of the bridge body 3; a second through hole 13 is opened on the end of the sleeve 4 close to the joint position, and a third through hole 14 is opened on the template 1, and the long bolt 7 can pass through these two holes; the long bolt 7 is equivalent to a tension bolt. When in use, by screwing the upper and lower nuts, the pad 5 on the bottom template and the support plate 6 can clamp the side of the bridge body 3 together, thereby achieving the effect of fixing the bottom template.

[0042] A rubber pad is provided at the bottom of the cushion block 5; the rubber pad can be used to protect the surface of the bridge body 3 and can increase the friction force, making the cushion block 5 difficult to move.

[0043] A sleeve 2 is sleeved on the long bolt 7, and the sleeve 2 is located above the template 1; the sleeve 2 can be a PVC tube. During installation, after the long bolt 7 passes through the second through hole 13, the sleeve 2 is then sleeved from the bottom of the long bolt 7, and then the bottom end of the long bolt 7 is passed through the third through hole 14.

[0044] During installation, some construction workers are below the bridge body 3, and some construction workers are above the bridge body 3. The construction workers below are used to operate the bottom formwork, and the construction workers above are used to operate the hanging parts. The long bolt 7 with a nut on the top is passed through the second through hole 13, the sleeve 2 and the third through hole 14 in sequence, and then the nut is screwed on the bottom end of the long bolt 7. Then the support rod is turned inward. During installation, the construction workers below will move the bottom formwork upward close to the bottom surface of the joint position of the bridge body 3, and then the construction workers above will turn the support rod to the outside. After placing the pad 5 at a suitable position on the bridge body 3, the staff above will screw the nut on the upper end of the long bolt 7. Through this operation, the pad 5 and the template 1 clamp the bridge body 3 to achieve the installation of the bottom formwork.

[0045] Compared with the traditional method: Taking the 100m bridge joint as an example, the joint area is 100m long and 50cm wide. The traditional method of installing the bottom formwork first requires personnel processing fees for cutting steel pipes or square wood; the installation requires 6 people * 300 (1 day and ten hours) = 1,800 yuan, excluding other materials. The bamboo plywood bottom formwork can also be used 1-2 times.

[0046] In this solution, taking the 100m bridge joint as an example, the joint area is 100m long and 50cm wide. There is no need for personnel to cut steel pipes or square wood, and only recyclable hanging parts need to be prepared. The installation can be completed by 6 people in 2 hours, and the converted cost is 300÷10*2*6=360 yuan. Compared with the traditional method, this solution saves 8 hours and greatly reduces labor costs.

[0047] Since the traditional method uses double rows of steel pipes or double rows of square timbers to connect with the upper part of the tension bolts, and there are no other constraints between the double rows of steel pipes or the double rows of square timbers, the position between the double rows of steel pipes or the double rows of square timbers is constrained by the downward pulling force of the tension bolts. Therefore, the operation will be slightly more troublesome than this solution.

[0048] This scheme was implemented in the Yangcunji Bridge, Zhangou Bridge and Kantuanji Bridge in the H001 (River Channel) section of the Yangtze River to Huaihe River Diversion Project (Anhui Section). It was found that this method can effectively reduce the consumption of materials such as steel pipes and square timber, improve construction efficiency, and save a lot of funds and personnel.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0051] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An integrated formwork for bridge joint concrete construction, characterized in that: The bottom mold comprises a bottom mold made of high-strength plastic, wherein the bottom mold is composed of two templates (1) hingedly connected to each other; It also includes a hanging piece for hanging and fixing the template (1), wherein the hanging piece connects the template (1) to a bridge body (3) close to the template (1); The hanging member comprises a retractable support rod arranged on the upper part of the bridge body (3), and a connecting member used to connect the support rod and the template (1).

2. The integrated formwork for bridge joint concrete construction according to claim 1 is characterized in that: The template (1) is a high-strength plastic template, and the bottoms of the two templates (1) are hinged via hinges (8).

3. The integrated formwork for bridge joint concrete construction according to claim 1 is characterized in that: The support rod comprises a support plate (6) and a sleeve (4); a straight slot (9) is provided on the support plate (6); the support plate (6) is slidably arranged in the sleeve (4) and is limited in position by a first bolt (10).

4. The integrated formwork for bridge joint concrete construction according to claim 3 is characterized in that: A cushion block (5) is provided at the lower part of one end of the support plate (6), the cushion block (5) and the support plate (6) are limited by a second bolt (11), and the cushion block (5) is placed on the bridge body (3).

5. The integrated formwork for bridge joint concrete construction according to claim 3 is characterized in that: The connecting member comprises a long bolt (7), the bottom end of the long bolt (7) passing through the end of the sleeve (4) and the corresponding template (1), and nuts are screwed on both ends to connect the template (1) to the lower part of the bridge body (3).

6. The integrated formwork for bridge joint concrete construction according to claim 4 is characterized in that: A rubber pad is provided at the bottom of the cushion block (5).

7. The integrated formwork for bridge joint concrete construction according to claim 5, characterized in that: A sleeve (2) is sleeved on the long bolt (7), and the sleeve (2) is located above the template (1).

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