KR100441725B1 - Formwork of water and sewage pipes for civil engineering - Google Patents

Abstract

The present invention relates to a formwork for drainage pipes. In general, in the drainage pipe for the drainage pipe, the corrugated support 39 and the fusion point 40 are formed in a spiral winding or hollow sphere so that the inner surface 31 has a space for inserting the cement mortar 44 between the outer surface 45. Filling space enclosed by the inner surface 31 and the outer surface 45 of the formwork 30 when it is filled and cured through the inlet 42 formed on one side of the formwork 30 in the cement mortar filling space formed of the back and the like. The structure that cools the high temperature formed by the exothermic reaction while the cement mortar 44 filled in the curing is weak, so that a fine crack is formed in the cured cement mortar 44, so that the drainage pipe 21 is weak. In the present invention, it is an invention to provide a solid cement mortar 44 is cured by the cooling water cooling to solve the generation of high temperature in the spiral circuit process in the input space of the formwork (3).

Description

Formation of water and sewage pipes for civil engineering

The present invention relates to the formwork of sewage pipes used in civil engineering, widely used for sewage pipes, sewer pipes, drain pipes, rain pipes, water pipes used in underground buried

In general, products for the formwork of water and sewage pipes are used in high load areas requiring high-strength drainage pipes for drainage pipes in the penetration part of the road, and cement between the inner and outer walls to meet the requirements. To maintain the space of the mortar filling space, it is formed by a corrugated support or a bent part. At this time, the cement mortar is filled into the filling space through the inlet to cure for a certain period of time. It is surrounded by the side wall and the outer wall to form a confined space that maintains a certain thickness. During the curing due to the exothermic reaction that the cement mortar cures, the high heat of the cement mortar is applied and applied, so that a fine crack occurs due to Vessel used for water and sewage pipes buried underground This problem has emerged in long-term use of such rogwan of robustness and quality.

The present invention is mainly intended for use as a formwork for drainage pipes used for water pipes, sewer pipes, as well as hollow sections of synthetic resin spiral pipes are required to overlap with the cement mortar of the outer wall and overlap with each other, in large diameter external pressure strength and Reinforce a certain thickness for robustness to thicken the space filled by the input of cement mortar, and provide reinforcement reinforcement in two-layer structure, but provide effective cooling structure for the exothermic reaction formed during the curing of cement mortar. To provide.

1 is a partially cut-away perspective view showing a structure in which a cooling tube is inserted into a filling space between a corrugated support and a welding point in a predetermined space between inner and outer walls in the present invention;

Figure 2 is a partial cross-sectional view showing a structure in which the cooling tube is inserted into the formwork in the main portion of the present invention

3 is a partial perspective view of an embodiment of the present invention, in which a cooling tube is inserted into a corrugated support of a two-layer structure;

4 is an enlarged partial cross-sectional view of the filling space shown in FIG.

Figure 5 (a) (b) is a sectional view and a perspective view of the use state of the present invention

<Description of Major Symbols in Drawing>

21. Drainage pipe 22. Formwork 23. Inner side 28. Filling space

29. Outer wall 31. Inner wall 32. Corrugated support 33. Fusion point

34. Bend 35. Cut 36. Assembly

37. Bend 38. Cut 39. Corrugated support

40. Melting point 41,41 'cooling pipe 42. Inlet

44. Cement mortar 45. Exterior wall 45 '. Outer side

The present invention relates to a drainage pipe formwork mainly used for water and sewage pipe as described in the drawings as shown in Figures 1 and 5, the filling space 28 between the inner wall 31 and the outer wall (29) In addition to the cement mortar 44 is added to the cement mortar 44 and in order to provide the firmness and the intermittent bending of the outer wall 29 in the spiral winding direction to the corrugated support 39 and the melting point 40 to the inner wall ( 31) and cemented mortar 44 is filled in the filling space 28, which is formed by forming the bent portion 38 to form a hollow space having a predetermined thickness to cure for a predetermined time, the cement at high temperatures generated In order to prevent cracks formed in the mortar 44, the cooling pipe 41 is inserted in the spiral winding direction, and the cooling water and the cooling air supply 47 and the discharger 47 'are connected at the inlet 42. Cement mortar (44) to fill Filled in the liver 28 to cool during the curing time for a certain time by the exothermic reaction during the curing, the invention to prevent the fine cracks of the cement mortar 44 due to high heat, when installed in the field Figure 5 (a) After the construction according to the drainage pipe as shown in the filling in the inlet 42 with the cement mortar 44 is filled with the mortar 44 in the filling space 28 is the invention that is firmly cured, the practice of the present invention For example, as shown in FIG. 4, when the size of the drainage pipe is a large standard, the thickness of the drainage pipe should be thick so as to meet the specifications of the product for durability and robustness. Thus, the outer wall 29 may be maintained while maintaining a predetermined interval on the inner wall 31. Fusion point 33 of the foldable portion 34 in the spiral winding direction of the outer wall surface 45 in accordance with the assembly portion 36 formed between the cutout portions 35 of the corrugated support 39 formed by bending in the spiral winding direction. If you unify it In addition, the corrugated support 32 and the cutout 35 are integrally formed on the corrugated support 32 and 39 having a two-layer structure by forming the filling space 28 to form the cement mortar filling section. It is a product composed thickly, and the product which inserted the cooling pipe 41 into the spiral winding in the filling space 28 of the two-layer structure formed at this time, high heat generation by the exothermic reaction during the curing of the cement mortar 44 Since it provides adequate cooling to solve the fine cracks formed in the cured cement mortar 44, it provides a formwork for the drainage pipe reinforced with durability and robustness and external pressure reinforcement to be used for a long time by buried underground.

At this time, since the cooling pipe 41 should be inserted into the filling space 28 of the drainage pipe 21 in a spiral winding shape, using a flexible pipe 41 'having an uneven portion or a cooling pipe 41 made of steel and synthetic resin. give.

Therefore, in the present invention, when the standard of the drainage pipe is larger than Ø1500 mm, the formwork 30 has a two-layer structure to provide a two-layer structure, as shown in FIG. Points 33 and 40 fix the cuts 35 and 38 to the bends 34 and 37 alternately, and cool the filling space 28 formed by circumferential outer surface 45 '. The filling space 28 is provided through the inlet 42 in one direction of the outer wall surface 45 as shown in FIG. 4 by providing the form 30 for inserting the pipes 41 and 41 'into the spiral winding. Connect the cooling pipe 41 inserted in the cooling water and cooling air supply 47 and the discharger 47 'to further excavate the soil of the construction site according to the design to assemble the formwork for the drainage pipe of the present invention according to the drainage pipe as appropriate. It is fixed, and the cement mortar 44 is added to fill the filling space 28 of the formwork 30 to cure for a certain time During this time, the invention is configured to remove the fine cracks formed in the cement mortar 44 by the high heat formed by the exothermic reaction during the curing reaction with the cooling tube 41, and then use it by recompressing the surrounding soil. At this time, in order to reinforce the strength of the cement mortar 44 by using a filler such as reinforcing sludge or glass wool reinforces the formwork of the present invention structurally durable.

The present invention is a product for drainage pipe formwork mainly used for supply and drainage pipes, which is reinforced with conventional formwork for drainage pipes in one-layer structure and formwork for drainage pipes in two-layer structure, and in particular, large-sized formwork with external pressure strength and durability. The problem occurs in the formwork formed by inserting the cooling tube along the spiral winding direction in the filling space formed in the provided form to increase the thickness of the formwork. The invention that provides this to be done smoothly is to provide a competitive product by providing workability and economical efficiency in the construction site.

Claims (3)

The outer wall surface 45 is fitted in accordance with the assembly portion 36 formed between the cutout portions 38 of the corrugated support 39 formed by bending the outer wall 29 in the spiral winding direction while maintaining a predetermined interval on the inner wall 31. Is integrated into the fusion point 33 of the bent portion 34 in the spiral winding direction, and the fusion point 33 is formed on the two-layer corrugated support 32 forming the corrugated support 32 and the cutout 35. In the formwork for the drainage pipe formed integrally, but the filling space 28 to the outer surface (45 ') and the inlet 42 is formed on one side, while the cooling tube 41 is inserted into the inlet 42 in the filling space (28) Formwork of water and sewage pipes for civil engineering, made by inserting spiral winding. The method of claim 1, Formwork of the civil engineering work, water and sewer pipe consisting of a synthetic resin cooling tube 41 'formed with flexible irregularities in the filling space (28). The method of claim 1, Formwork of water and sewage pipes for civil engineering, which is connected to the cooling pipe (41) inserted into the inlet (42) by a cooling feeder (47) and an outlet (47 ').