KR101076695B1 - A jig assembly for fixing waterproof members of a tension hose in the removable ground anchor - Google Patents

Abstract

The present invention is used exclusively for the waterproofing material of the tension coating hose in the tension member removal ground anchor body to secure the PE_ ring and the insert and the waterproof cap fitted to the PE hose in one operation without being detached from the PE hose. The present invention relates to a jig assembly for securing a waterproofing material of a tensioning hose which can improve the reliability of waterproofing.

The present invention provides an expansion member for radially expanding and driving an insert member and a ring member respectively fitted to an outer surface of a tension member hose and a ring member and a waterproof cap fitted to an inner surface of a rear end of the tension member hose to be fixed to the tension member hose; And hydraulic pressure providing means for driving the expansion means, and expanding the insert member and the ring member fitted to the inner and outer surfaces of the tension member hose and the waterproof cap fitted to the inner surface of the rear end of the tension member hose by driving the expansion means. It provides a jig assembly for fixing the waterproof material of the tension material hose in the ground anchor body, characterized in that the insert member and the ring member and the waterproof cap is fixed to the tension material hose.

Tension material hose, jig, pin member, expansion pin, hydraulic cylinder, insert member, PE_ ring member, waterproof cap

Description

J j assembly for fixing waterproof members of a tension hose in the removable ground anchor

The present invention is dedicated to the waterproof structure for waterproofing the tension hose in the removable ground anchor body to remove the tension member of the free field after securing the anchoring force by applying a tensile load to the free end side for the construction of the underground structure or to stabilize the slope. Jig assembly used, more specifically, to securely secure the waterproof material to prevent the water from penetrating the boundary between the wedge assembly and the tension hose hose by the grout material inserted into the ground perforation without deviating from the tension hose. Jig assembly for the.

In general, ground anchors are used to stabilize structures from excessive stresses, deformations, and displacements in the ground by fixing high-strength tension members, such as PC strands, on both sides of the structure and the ground and applying prestress in civil works. It is construction material. Such ground anchors are widely used as earthquake construction to prevent the collapse of the ground during excavation of underground structures for building construction and civil engineering structures, and as a safety means for suppressing soil loss on the soft ground cut surface.

The ground anchor body includes a permanent anchor leaving the tension member after construction of the underground structure, and a tension member removing ground anchor recovering the tension member after applying the fixing force.

The permanent anchor is suitable for wide area soils that do not interfere with the construction of other underground structures even if the tension member is left in the ground. On the other hand, when the tension member is removed in the ground after completion of the construction work, the tension member removal ground anchor is suitable for preventing obstacles in the construction of underground structures in the adjacent ground in the future. Is increasing in number of cases.

The tension removing ground anchor method is subjected to a series of processes as shown in FIG. That is, as shown in the figure, at least one strand or more of the leading end of the tension member (b) is bitten by a wedge in the internal fixing body (c) and inserted into the anchor hole (d) bored in the ground. Then, the grout material (e) is filled and fixed in the anchoring section of the anchor hole (d), and the external fixing body (g) is applied to the band (f) of the earth wall (a) by applying a design fixing load to the tension member (b). Will be settled. When the fixing force of the anchor is completed, the tension member is removed by releasing the bite force of the tension member that is bitten by the wedge of the internal fixing body (c).

Reference numeral i denotes a tension member cutout.

As shown in FIG. 2, the internal fixing unit C serving as a permanent anchor in the ground includes a block 50 having a female thread formed on an upper inner circumferential surface thereof, a wedge 60 embedded in the block 50, and the block ( It consists of a waterproof cap 70 is fastened to the female thread of 50). The wedge 60 has a tapered shape of the entire outer surface, and is composed of piece pieces divided into two or three equal parts. The wedge 60 maintains the shape of the wedge assembly by inserting a wedge retracting ring 64, such as a rubber O ring, into a polyethylene-based outer PE_ring groove 62 formed in the circumferential direction at the outer end thereof. A spiral blade 66 is formed to bite the tip of the tension member.

In the internal fixing body (C) having the above-described structure, a tension member (PC strand) (b) for imparting a fixing force is inserted into the wedge (60).

In addition, after inserting the ground anchor body into the ground perforation part and injecting and fixing the grout, the wedge 60 is bitten to prevent the grout from restraining the tension member of the free tenon when applying the fixing load to the tension member. The tension member b is coated with a polyethylene PE hose h.

The tension member-removable ground anchor is based on the premise of preventing corrosion acting as a barrier to the removal of the tension member. This is because, when the ground anchor body is settled, if the water of the grout injected into the ground drilling part enters between the block 50 and the tension member b and the tension member is corroded, it is difficult to remove the tension member after removal of the fixing force.

Therefore, the waterproof structure 52 is installed at the lower end of the block 50 to which the PE hose h is fitted in order to prevent water from entering the boundary (screw fastening part) between the block 50 and the wedge 60. do. The waterproof structure 52 is composed of a water-tight member 54 installed on the lower inner circumferential surface of the block 50, and a PE_ ring 56 of polyethylene material installed at the tip of the PE hose (h), the water-tight member (54) ) And PE_ ring 56 are waterproof.

The PE ring 56 is threaded on the inner circumferential surface and fixed to the outer surface of the distal end of the PE hose h by a forced fitting method, but the fitting structure of the PE ring 56 is firmly fixed to the PE hose h. There is a problem that can not be fixed. This is because the PE hose ring 56 is released when the PE hose is contracted or crushed by grout pressure, or the PE ring 56 is removed from the PE hose h during packing (rounding) of the tension member-removable ground anchor body. ) Causes the problem of easily falling off. In addition, the PE_ring 56 is often separated from the PE hose h by the pressure when the grout anchor is inserted into the perforation portion of the ground. Due to the fixing problem of the PE ring, it is difficult to expect a perfect waterproof with the waterproof structure consisting of the watertight member 54 and the PE ring (56).

In addition, conventionally, after inserting the ground anchor body into the perforation part, there is a concern that water flows into the rear end of the PE hose (h) during grouting, and even when water flows into the rear end of the PE hose, the tension member Although there is a problem in that it is difficult to remove the tension member after fixing due to corrosion, there is no additional device for preventing the rear end of the PE hose.

Therefore, the present invention has been proposed to solve the above problems, it is used exclusively for the waterproofing material of the tension sheathing hose in the tension member removal ground anchor body to expand the PE_ring, insert member and waterproof cap in one operation It is an object of the present invention to provide a jig assembly for fixing the waterproof material of the tension hose which can be firmly fixed to the PE ring, the insert member and the waterproof cap installed in the PE hose without separation, and improve the reliability of the waterproof.

In order to achieve the above object, the present invention, the expansion means for radially extending the fixed member to the tension member hose and the insert member and the ring member fitted to the outer surface, respectively, the outer surface of the tension member hose fixed to the tension member hose; And hydraulic pressure providing means for driving the expansion means, and expanding the insert member and the ring member fitted to the inner and outer surfaces of the tension member hose and the waterproof cap fitted to the inner surface of the rear end of the tension member hose by driving the expansion means. It provides a jig assembly for fixing the waterproof material of the tension material hose in the ground anchor body, characterized in that the insert member and the ring member and the waterproof cap is fixed to the tension material hose.

Here, the expansion means is a base member; Is installed on one side of the base member, the support for supporting the tension hose; A support shelf installed on an upper portion of the base member; It is installed on the supporting shelf, and divided into a predetermined number and provided with a pin member that is expanded by the pressure provided from the outside, the pin is inserted into the end of the tension member hose and the waterproof cap fitted to the rear end to the pin member Expansion for securing diameter to the tensioner hose; A hydraulic cylinder installed at a rear end of the expansion chuck and providing hydraulic pressure for uniformly expanding and contracting each divided pin member; And a lift cylinder installed below the support shelf to lift the support shelf.

According to the present invention as described above, by expanding the diameter of the insert member, PE_ ring member and the waterproof cap fitted to the PE hose line and the rear end of the ground anchor body by one expansion operation using the expansion jig. It is firmly fixed to the PE hose, and the waterproofing of the PE hose can be reliably implemented.

In addition, the present invention can reliably prevent the PE_ring member from being separated from the PE hose when the ground anchor body is packed or when the PE hose is inserted into the perforation of the ground.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 3 to 6.

Jig assembly for waterproofing the tension member of the tension member hose according to the present invention is a PE ring, the insert member and the waterproof cap for sealing between the PE hose and the block covering the tension member in the removable ground anchor body structure is secured without being separated from the PE hose. It is to be fixed and to improve the waterproof reliability.

Figure 3 is a perspective view showing an embodiment configuration of a jig assembly for fixing the waterproofing material of the tension hose according to the present invention, Figure 4 is a front view of Figure 3, Figure 5 is a detailed view showing the configuration of the expansion portion that is the main part of the present invention to be.

Referring to Figure 6 with respect to the waterproof structure produced by the present invention, as shown in the figure to prevent the polyethylene-based PE hose (h) wrapped around the tension member (b) to shrink by grout pressure In order to insert the insert member (4) having a hollow portion to the inner surface of the front end of the PE hose (h).

In addition, the outer surface of the distal end of the PE hose h prevents the insert member 4 from being detached and closes the watertight member 54 installed in the block 50 (see FIG. 2). Polyethylene-based PE ring member 6 is performed to perform the. A female thread 6a is formed on the inner circumferential surface of the PE_ring member 6 so that the female thread 6a is embedded in the PE hose h and firmly fixed thereto.

The rear end of the PE hose (h) is provided with a waterproof cap (8) for blocking the water from the grouting intrusion into the PE hose (h).

The insert member 4, the PE_ring member 6 and the waterproof cap 8, which are employed in the anchor body waterproof structure having the above-described configuration, are fitted to the PE hose h, It is expanded and fixed by operation.

The expansion jig includes a base member 22, as shown in Figs. It is installed on one side of the base member 22, and a support 24 for supporting the PE hose (h); A support shelf (26) installed on an upper portion of the base member (22); The radially expanded driving member 4 and the ring member 6 fitted to the inner and outer surfaces of the PE hose h and the waterproof cap 8 fitted to the inner surface of the rear end are fixed to the PE hose h. Expansion (28); A hydraulic cylinder 30 providing hydraulic pressure to allow the expansion chuck 28 to expand and contract in a radial direction; And a lift cylinder 32 installed below the support shelf 26 to lift the support shelf 26.

The expansion chuck 28 has a hollow portion expansion unit body 42 which is in charge of the access of the hydraulic pressure provided from the hydraulic cylinder (30); It is installed to protrude into the hollow portion of the expansion unit body 42 to fit the insert member 4 and the waterproof cap 8 fitted to the rear end of the PE hose (h), is divided into a plurality It includes a pin member 44 is extended in the radial direction uniformly by the hydraulic pressure provided from the hydraulic cylinder 30 to expand the insert member 4 and the waterproof cap (8).

In the embodiment of the present invention, the support 24 shows an example made of I-shaped steel, but is not necessarily limited to the above structure, any structure for supporting the PE hose (h) may be employed.

The operation of the expansion jig assembly having the above-described configuration will be described with reference to FIG.

First, the PE hose (h) is mounted on the support (24), the PE_ ring member (6) is inserted into the outer surface of the distal end of the PE hose (h) by a force fitting method, the PE hose (h) of Insert the insert member (4) in the tip inner surface. Then, when the hydraulic cylinder 30 is operated after inserting the insert member 4 into the pin member 44 of the expansion chuck 28, the hydraulic member is mounted on the expansion unit body 42. It is transmitted to, and as the divided pin member 44 is uniformly extended in the radial direction, the insert member 4 is expanded and tightly fixed to the PE hose (h). At the same time, as the PE hose h is expanded, the female thread 6a of the PE ring member 6 is embedded in the outer surface of the PE hose h and is firmly fixed.

Similarly, when the waterproof cap 8 is inserted into the rear end of the PE hose h, and the airtight cap 8 is expanded after being inserted into the pin member 44 of the expansion means 28, the waterproof cap 8 is inserted into the PE hose h. It is firmly fixed. The insert member 4, the ring member 6, and the waterproof cap 8 are firmly fixed to the PE hose h through the jig assembly of the present invention driven as described above. That is, by expanding the diameter of the PE ring member 6 and the insert member 4 by the expansion force of the pin member 44 installed in the center of the expansion chuck 28 is firmly fixed to the PE hose (h), The PE hose h is protected by the insert member 4 and the PE ring member 6. Therefore, even if grout pressure is applied to the internal fixing member, the tip of the PE hose h is not crushed or contracted. In addition, the front end PE_ring member 6 of the PE hose h is brought into close contact with the watertight member 52 (see the watertight member of FIG. 2), thereby inserting the ground anchor body into the ground drilling part, It is possible to achieve a complete waterproof between the block 50 and the PE hose (h).

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and alterations are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

1 is a schematic view showing a general tension material removal type anchor anchor method,

Figure 2 is a cross-sectional view showing the configuration of the tension member removable ground anchor body according to the prior art,

Figure 3 is a perspective view showing an embodiment configuration of the jig assembly for fixing the waterproof material of the tension hose according to the present invention,

4 is a front view of FIG. 3;

Figure 5 is a detailed view showing the configuration of the expansion portion, which is the main part of the present invention;

Figure 6 is a cross-sectional view showing a state in which the PE ring and the insert member and the waterproof cap is fixed to the PE hose by the operation of the expansion jig of the present invention.

* Explanation of symbols for the main parts of the drawings

h: PE hose 4: insert member

6: PE ring member 8: Waterproof cap

22: base member 24: support

26: base shelf 28: expansion

30: hydraulic cylinder 32: lifting cylinder

42: expansion unit body 44: pin member

Claims (4)

delete An expansion unit body having a hollow portion, an insert member and a ring member fitted to the inner and outer surfaces of the tension member hose, respectively, are installed to protrude from the hollow portion of the expansion unit body so as to be secured to the waterproof cap fitted to the inner surface of the tension member. Expansion means including a pin member that is uniformly expanded by the pressure provided in the; And Hydraulic cylinder providing pressure for causing the pin member of the expansion means to expand and contract in the radial direction Including, Jig assembly for securing the waterproof member of the tension member hose in the ground anchor body, characterized in that the pin member is extended radially by the pressure provided from the hydraulic cylinder to secure the insert member and the ring member and the waterproof cap to the tension member hose. delete A base member; A support installed on one side of the base member to support a tensioner hose supplied from the outside; A support shelf installed on the base member; The pin member is installed on the support shelf and is divided into a predetermined number and has a fin member that is uniformly extended by pressure provided from the outside. The pin member includes an insert fitted to the front end of the tension hose and a waterproof cap fitted to the rear end. Expansion to fit and expand diameter; A hydraulic cylinder installed at a rear end of the expansion chuck and providing hydraulic pressure for uniformly expanding and contracting each divided pin member; And An elevating cylinder installed under the support shelf to lift the support shelf; Jig assembly for fixing the waterproof material of the tension hose in the ground anchor body comprising a.

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