KR20020036935A - Manhole Formwork and His Products - Google Patents

Abstract

PURPOSE: A cast for manhole useable in joint for water drainage in civil engineering applications and a product of the same are provided to improve field workability and rigidity of the product as well as delivery property and durability. CONSTITUTION: The cast comprises an inner and an outer sides(21)(36) having reinforcing hollows charged with cement mortar; cast-releasing supports(22)(29) and fusible points(23)(30) in duplicated structures; bent portions containing splits(25)(28) integrated with the cement mortar. The cast is provided with an intermediate side between the inner and the outer sides(21)(36). The intermediate side is mounted by the cast-releasing support(22) and the fusible point(23) to form the split(28) at the bent portion. The cast is constructed by charging the cement mortar into a space between the inner and the outer sides(21)(36).

Description

Manhole formwork and its products {.}

The present invention relates to a manhole used in the drainage pipe of civil engineering. Conventionally, there are products made of reinforced concrete, used as PE spiral pipe, or filled with concrete mortar from PE spiral pipe. However, part of the surface is exposed to the site, so high strength and robustness are required in terms of materials.

The present invention is a product configured to fill the cement mortar of the two-layer structure so as to provide a thickness more than a certain thickness than the conventional spiral tube to improve the PE spiral tube to reinforce the high strength and robustness so that the semin mortar can be connected to each other in the structure It is a reality that needs to be provided.

1 is a perspective view of the present invention

Figure 2 is a cross-sectional view of the main part of Figure 1

Figure 3 is an exploded view of the main part of Figure 1

4 is a state diagram used in the present invention

[Explanation of symbols on the main parts of the drawings]

1. PE spiral pipe 11. Formwork 21. Inner side

22. Corrugated support 23. Fusion point 24. Bend

25. Incision 26. Assembly 27. Bend

28. Incision 29. Corrugated support 30. Fusion point

31. Middle side 34. Cement mortar 35. Outer side

36. Exterior wall 37. Connector 38. Prosecution

The present invention relates to a manhole formwork and its products, which are widely used in civil engineering works, residential land development, road works, paddy fields, field construction works, etc., and provide strength and durability of manholes made of cement mortar. Cement mortar (34) is introduced into the hollow section between the inner surface 21 and the outer surface 45 as shown in Figures 1, 2, 3 to improve the structure of the PE drainage pipe to maintain the robustness In addition, the intermediate side 31 is inserted into the space of the inner and outer surfaces 21 and 36 of the PE spiral pipe for the purpose of providing the form of the two-layer structure in order to provide the rigidity of the cement mortar 44 itself. The corrugated support 29 and the fusion point 30 are integrated to the inner side 21 by the configuration of the bent portion 27 in the winding direction, but the outer side 36 forms the cutout 25 to form the intermediate side 31. Wave support 22 and fusion point 23 Formed by alternately arranging the incisions 28 to the bent portions 24, respectively, and wrapped around the outer surface 36, the formwork to insert the reinforcing reinforcing bar 33 into the spiral winding circuit in the assembly section 26 space (11) After installing the prosecution 38 at the construction site by providing, while inserting and fixing the auxiliary connecting pipe 37 of the formwork 11 of the present invention, the cement mortar 34 is injected into the ↓ type direction of the upper part. It is an invention configured to fill the internal space of the formwork 11 to cure for a certain time and then use it to remoment the surrounding soil. At this time, in order to reinforce the durability of the cement mortar (34) is inserted into the spiral wound space of the formwork (11).

The present invention relates to a manhole formwork and a product thereof, in which not only the cement mortar 34 is filled up to the reinforcing hollow portion of the inner and outer sides 21 and 36, but also the corrugated supports 22 and 29 and the fusion point 23. (30) and the bent portions (25) and (28) of the bent portion (24) and the role of the cement mortar (34) to strengthen the unity of the two-layer manhole formwork and its products as external pressure strength and durability firmness, etc. Provides excellent effects.

Claims (2)

In the manhole, the intermediate side surfaces 31 and 35 are formed on the inner and outer surfaces 21 and 35, and the intermediate side surfaces 31 and 35 are bent to form the corrugated supports 22 and 29 and the fusion point 23. Formwork for manhole and its products formed by forming 30) in a two-layer structure and wrapping with outer surface 35 The formwork for manholes and products thereof according to claim 1, wherein cement mortars 34 are filled in the spaces of the inner and outer surfaces 21 and 35.