Assembly Method of Multi Hole Wire Cone Fixture Combined with Different Steel Materials

摘要

The high strength and tension wire in yuapjaek necessarily prevent the end of the wire attached to existing structures in the process of slipping is to provide a fixing device that can lean on a wire cone cone and make sure the wires securely to ask existing structures. Existing single cone to Figure 3 an example for representing the wire cone diameter 15.2mm wire 11 is drilled a hole with a diameter of 18mm in the longitudinal direction in the middle of the length and the diameter of each of the high-strength steel rod 45mm, cone formation in one of the surfaces you supply will expand into the wedge holes. Processing wedge (7) is inserted in the wedge hole in the rod and cone formation, and a hole to insert the wire into the machining center, and the hole surface with a serration in the longitudinal direction into three equal parts. Other various wire condo production methods and functions the same as a single cone, wedge shape and is different from the arrangement and number of holes for the insertion hwakgong. ; While the wire wrapped around the ends of the wire cone wedge When inserted into the wedge insertion holes, to pull the wire in the direction of the arrow and the wire (5) end to take advantage of the principle that the wedge (7) and the slip bite firmly on the wire cone Jersey. Fixing both ends of the wire to the wire cone, using the method, a wire cone is expected to ensure the jiappan of the fixing device provided on the existing structure. Expect to jiappan wire cone 13 of the fixing device how to surround the wire ends into the wedge hole drilled in the state, insert the wire in the wire and the support jiappan depend on jiappan wire cone. While one end of the wedge after wedge holes not to jiappan driving beat of the wire cone gajorip the other end of the wire cone biting at the wire ends into yuapjaek leaning state in tension at a predetermined pressure plate ginjangryeok push the wedge wire cone to prevent the sliding wedge wire and remove the yuapjaek. ; Conventional welding wire and the spacing of the cones and the existing structure of Figure 3 ( h ₁ ) Ido to yiraya value that can be nervous the wire to the existing yuapjaek 4a, as shown in its minimum degree is 40mm and Speaking 15tf the ginjangryeok ( P ) of the wire gangs eccentric moment ( M ₁ ) is 15 0.04 = 0.6 (tf m) becomes. In this case, if the mutual spacing of a pair of high-strength bolts anchoring devices to control the eccentric moments in 55mm, tensile strength of high-strength bolts ( R ₁ ) is 0.6 / 0.055 = 10.9 (tf ) is commonly used for high-strength bolts M22 F10T one allowed 11.8tf tensile strength is almost exhausted because of the eccentric stress. ; In addition, most of the height occupied by the fixing device in the case of reinforcing the existing structures The greater the number of adversely affected from the side of the building theoretical minimum height of the welding cone may be the fact that it is common to more than 80mm 100mm, sometimes 200mm. In addition, the biggest problem of the cone and welding deformation due to the welding heat in the production process, it is difficult to correct most of them are in the field, the situation inevitably poor construction takes place. This fundamentally solve 2 measures are integral perforated cone (200) is characterized inde serving as a fixing device. This thickness of the wire through the wire hole in one end of the required number of holes in the longitudinal direction of the steel plate 45mm eda there will form a wedge-hole (6). ; in the thickness direction is the required number of avoiding the wire hole geotinde cut a high-strength bolt hole, usually the length of any porous cone is precision work drilling holes of 18mm diameter wire correctly, so when you have a large number of the number of months in 40cm or 30cm bolt has spent a lot of time and money needed to disadvantage. Then he went through several waves of international steel was faced with the fundamental issues that need to be improved above method. Steel is used for structural carbon steel wire cone making machine inde S45C (KS D 3752), which have difficulty in supply whenever the machine parts and marine equipment yeoseo tolerate high-strength steel grade steels wave. Tried to replace imported materials to address this quality is not guaranteed, S45C, it is impossible to manufacture welding as shown in Fig. 6 do not allow the welding. So you want to, but it is also produced by welding structural steels welding SM490 (KS D 3515), such as 6 to bridge, pass on the steel market, and in the examination results referred to gudeuk Mellor tearing (Lamella Tearing, parallel to the steel surface peeling on crack) is not being advanced as in the poor can only be used with confidence to 20%. ; wedge wire cone, as shown in Figure 5 is that you want to remove the steel plate in the thickness direction Since stress (vertical component force) This can not be allowed to cause tearing of La Mellor safety sheet. Therefore, the present invention is a method that is relevant to the core of the wire is perforated cone gyeomhayeo a fixing device to be removable without making a few (minimum 22.5mm) welding operations while still falling As the gap in the existing structure. ; Figure 4b is a case of using a porous hyeong wire cone (the perforated cone b) of the present invention. The ginjangryeok ( P ) of the wire 15tf, assuming that the existing structure and the center distance of the wire (5) 22.5mm, which corresponds to the eccentric moment of the high-strength bolt pair mutual distance 55mm, the eccentric moment ( M ₂ ) is a 15 0.0225 = 0.338 (tf m), tensile forces acting on the high-strength bolts ( R ₂ ) is compared to the 0.338 / 0.055 = 6.16 (tf) 10.9 cone in front of the conventional welding (tf) is only 57%. The maximum thickness of the fixing apparatus by only 45mm, b may be perforated cones are combined thickness increase is only acceptable. B porous material of cone (1) is applied to the high strength of S45C, and the other base panel (2) and the reinforcing washer (3) are optional, such as a steel material SS400 and SM490, so when supporting a load in pressure contact with each other and b perforated cone strength can be used in.