KR20020042404A - Disjointable fixing apparatus of tension material and Removal method of tension material - Google Patents

Abstract

PURPOSE: An anchorage with a disjoinable tension member is provided to decrease manufacturing costs by reducing the number of components for an anchor, to shorten working hours and to heighten reliance on mechanical function of an anchor. CONSTITUTION: The anchorage with a disjoinable tension member(50) comprises: an elastic instrument for stopping the retreat of a three-section wedge; a cap coupled with the elastic instrument; a cylinder coupled with the cap and an anchor composed of a three-section wedge and interposed to a central through hole of the cylinder to bind a single-line tension member; a cast load-proof body(60) containing a tension member removal anchor(10) and a tension member(50); and a fastening ripple(20) and a socket(30) for connecting the cast load-proof body(60) for coupling the anchor and the cast load-proof body(60).

Description

Disjointable fixing apparatus of tension material and Removal method of tension material}

The present invention relates to a fixing device installed in civil engineering or building structure construction, and more particularly, to a tension material disassembleable fixing device that forms a structure that is easy to install and can easily remove the tension material after achieving the purpose of the fixing device.

In the prior art, anchors are constructed with earth walls to excavate and prevent settlement of the surrounding underground to construct underground structures involved in building construction, and to support the earth walls. Permanent ground anchors are anchors installed to prevent movement or deformation when building or other structures are installed in groundwater leaching sites, slopes, etc. Temporary ground anchors are underground fixed structures that are removed after construction is completed. Especially in the case of permanent ground anchors, the urban area needs to be constructed as close as possible to the boundary line with neighboring lands in order to increase land price and land utilization rate. Therefore, the tension material remaining in the ground becomes an underground obstacle, Problems can work and cause underground compensation rights problems. Therefore, interest in the installation and dismantling of temporary ground anchors is increasing, and the technical development is mainly focused on this.

Looking at the anchor related art below.

The first prior art (Korean Patent Publication No. 2001-0011265) is a prior art aimed at fixing a much larger number of tension members than the number of wedges to apply a large fixing load.

It is to provide a fixing device for permanent ground anchors that can reliably stabilize a structure that requires high loads by maximizing the compressive strength of the tensile material by accommodating the maximum tensile material with the minimum wedge. The tapered inner peripheral surface is divided into equal parts. Wedge grooves corresponding to the wedge grooves are tapered on the outer circumferential surface tapered like the inner circumferential surface on the main body which forms the wedge grooves corresponding to the wedge grooves on the wedge tube side. A wedge tube having a wedge groove is inserted therein. The wedge tube has a tapered inverted cone corresponding to its inner circumferential surface and a central wedge having a wedge groove corresponding to the wedge groove on its outer circumferential surface, and is permanently covered with a cover at the tip of the body. Ground anchor.

Second prior art (Korean Disclosure 2001-0016726) is a prior art aimed at making it possible to easily remove a tension member installed by using a tension member for dismantling. Possible temporary ground anchoring device and tension material dismantling method.

A cylinder having a locking wall formed at an upper portion of the inner circumferential surface, a central through hole formed at a middle portion of the upper separating locking wall, and a plurality of outer holes formed radially, and a locking jaw formed at an upper side of the inner circumferential surface of the central through hole; A plurality of tension wedges inserted into an upper portion of the outer hole and fastening a tension member, a center member inserted into the central cylinder of the cylinder and formed into a cylindrical shape, and having a tapered insertion portion formed on an inner upper side thereof and a guide portion formed on an inner lower side thereof; And tension member wedges for anchor dismantling, wherein the tension member wedge is inserted into the tapered insert portion of the center member and the tension member is inserted and fastened, and the tension member wedge stopper used to separate the tension member from the tension member wedge, and the lower portion of the cylinder. To create a passage for the tension member, and to bind the tension member for the anchor release wedge Cylinder base forming a jaw for the dancing material is located, the waterproof ring is placed on the waterproof ring mounting jaw of the cylinder base and comprises a waterproof ring and cap and inner body to prevent the penetration of moisture, mortar, etc. from the outside into the cylinder, In the method of dismantling the tension member, the process of breaking the pressure from the tension tension wedge of anchor anchor by breaking force of anchor tension tension wedge by breaking force of anchor tension tension member in the process of dismantling tension member and breaking the jaw and leaving the tension member for tension anchor wedge After contact with the anchor wedge stopper for anchor dismantling, the tension member is decoupled from the tension wedge for anchor dismantling to dismantle the tension member.

The third prior art (Utility Model Registration 20-0163598) is a fixing device which is designed to easily install a tension member and to easily remove the installed tension member, although the structure is simpler than a conventional fixing device, and the component is removed by removing the tension member. It is an object of the present invention to provide a fixing device for removing a tension member of a ground anchor that can easily remove a tension member by manpower without improving the manufacturing and assembly properties, weight reduction, tension member removal reliability, and a dedicated drawing machine.

Two or more tension members inserted into the rear end of the main body by wedges in the main body and the wedge of the tension member by removing the wedge to the tension member by the operation outside the anchor hole to enable the removal of the tension member, for the wedge holder saddle at the bottom of the inner peripheral surface of the main body A stepped hole is formed on the stepped hole, and the donut-shaped wedge holder placed with the electric heating element connected to the thermally decomposable thermoplastic resin is embedded in the stepped hole and the circumference is divided into the tapered hole. Insert a wedge tube formed with a wedge groove of less than half circle into the main body by placing it in the main body, and insert the wedge groove with the same number of wedge grooves as the wedge groove on the tapered surface of the outer periphery. It is seated on the wedge holder base, and the cover is fixed to the tip of the main body, and the bolt is inserted into the bolt hole drilled in the cover plate. It is entered into the top of the wedge.

As described above, the related art is mainly related to the invention of the anchor configured to remove the tension member after the purpose of anchor installation.

In the first prior art (Korean Patent Publication No. 2001-0011265), this prior art has the advantage of applying a large fixing load by fixing a much larger number of tension members than the number of wedges, but there is a significant disadvantage that can not remove the tension member installed later have.

In the second prior art (Korean Patent Publication No. 2001-0016726), the prior art is to facilitate the removal of the tension member installed by using the dismantling tension member or to increase the number of components and add the dismantling tension member due to the complicated structure of the anchor. Increasing manufacturing cost and drawing work of the dismantling tension member is added, and in particular, the shape is too complicated, which makes processing and assembly difficulty high, resulting in low working efficiency. If the tensioning member is loosened, the tension member may slip out when the pulling force is applied.In this case, the tension member wedge does not open and all tension members are incapable of removal because the core material to be retracted does not retreat. There is a fatal drawback that the rest of the tension can't be removed. All.

In the third prior art (Utility Model Registration 20-0163598), this conventional technology is simpler in structure and easier to install than the conventional prior art, while an electric heating element in which electric wires are connected to a thermally decomposable thermoplastic resin is embedded, so that when the tension material is dismantled, Dismantling process is cumbersome because it requires the use of the device, and when reusing the anchor, there is a disadvantage that the electric heating element connected to the wire is connected to the pyrolytic thermoplastic resin.

In the conventional fixing device, the tension member is coated to remove it after the tension member is installed, and the tension member installed in the ground is removed by using a drawing machine. In the tension member hypothesis, a bending treatment is performed to prevent the tension member from falling off and deformation. Therefore, drawing work is difficult when removing the tension material, a large force is required to remove the tension material. In addition, work is dangerous as much force is required.

Accordingly, the present invention has been made to solve the above problems of the prior art, simplifying the structure of the anchor to increase the mechanical reliability of the anchor, by using a fixing device containing a tension member therein, simplifying the installation and drawing work The purpose is to provide ease of use.

1 is a view showing the overall configuration consisting of a tension member removal anchor and fastening means and a load-bearing body of the casting material dismountable fixing device according to the invention

2 is an exploded view of the cylinder and tension wedge for tension

3 is a part view of the anchor for removing the tension material

Figure 4a is an installation of the nipple and the socket

4B is an installation diagram of the unidirectional nipple

Figure 5 is a cross-sectional view of the cast body bearing

Figure 6a is a tension member installation of the tension member removal anchor

Figure 6b is a tension member removal progress of the tension member removal anchor

Figure 6c is a tensile material removal complete view of the tension member removal anchor

** Explanation of symbols for main parts of drawings **

10: anchor material removal anchor (anchor) 20: nipple (ripple)

30 socket 40 tension sheath

50: tension member 60: bearing body made of casting

70: cylinder 80: stop spring bolt drilling

90: tension member insertion hole 100: connection portion of the fastening means

110: 3 split wedge 120: spring cap

130: wedge support spring 140: detent forward spring

150: stop spring bolt 160: detent

170: tension member insertion hole 180: the assembly

190: inserting tension member of the inner body of the casting

200: unidirectional nipple

In order to achieve the above object, the present invention provides a resilient means for preventing the retraction of the split wedge at the top, a cap coupled to the resilient means, a cylinder coupled to the cap, and an insertion in the central through hole of the cylinder. Tension member consisting of an anchor consisting of a three-wedge wedge to bond the tension member to a single wire, a lower body 60 made of a casting inserting the tension member therein, and coupling means for coupling the anchor and the lower body 60 made of the casting. In the disassembly fixing apparatus and the tension member disassembly process, a step of repulsive force acting on the anchor beyond the preservation force of the three-segment wedge support spring, and the step of shrinking the three-segment wedge support spring by the repulsive force of the tension member; In which the split wedge inside the anchor is retracted into the space inside the cylinder, and the play of the split wedge is caused by the constant retraction. , And the step that is separate from the tension member by a holding step, and a clearance of the three-division returns the stop wedge is returned is prevented by the detent of the detent spring bolt for preventing the return of the retraction three split wedge state. Characterized in that the tension member dismantling method of the tension member dismountable fixing device comprising the step of removing the tension member by pulling the tension member after the separation step of the anchor.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall configuration of a plurality of tension member removal anchor of the tension member dismountable fixing device according to the present invention, the coupling means and a load-bearing body 60 made of a cast. According to the present invention, the present invention is a cast member including a tension member removal anchor 10 and a tension member 60 including a tension member therein, and a tension member removal anchor 10 and a tension member therein. It is composed of a fastening nipple 20 and a socket 30 connecting the lower body 60.

FIG. 2 is an exploded view of the cylinder 70 and tension tension three-part wedge 110, and FIG. 3 is a part view of the tension member removal anchor 10. According to Figure 2, the tension member removal anchor 10 and the three-segment wedge (110) to enter the cylinder 70 and the cylinder of Figure 2 and. The cap 120 and the wedge support spring 130 of Figure 3, and the stop spring bolt 150 for preventing the return of the wedge. The cylinder 70 has a stopper spring bolt for drilling 80 to insert the stop spring bolt 150 is drilled on both sides, the lower end of the cylinder 70, the connection portion that can be connected to the nipple 20 of the fastening device ( It is composed of 100, the upper end of the cylinder 70, the wedge support spring 130 and the spring cap 120 is mounted. The wedge support spring 130, which is a part of the tension member removal anchor 10, is manufactured to withstand a certain load with a spring produced by adjusting the elastic modulus. The stop spring bolt 150 for stopping the return of the wedge is composed of a bolt, a forward spring 140, and a detent 170 as shown in FIG.

4A is an installation diagram of a nipple and a socket.

According to Figure 4a, the nipple and the socket as a fastening means for connecting the tension member removal anchor 10 and the casting body 60 made of a casting, the nipple 20 and the coupling means made of a casting body 60 made of casting ) And the socket 30 is coupled. As shown in Figure 4a, in the combination 180 consisting of the nipple 20 and the socket 30, the tension coating 40 is inserted only up to the socket 30, after the nipple 20, only the tension material is inserted, the tension coating is The socket 30 is caught by the jaw of the inner nipple 20.

4B is an installation diagram of a unidirectional nipple.

According to Figure 4b, the unidirectional nipple 200 is similar in shape and function to the combination consisting of the nipple 20 and the socket 30, one side is a male screw and has a locking jaw in the middle, the male screw The side 10 and the tension member removal anchor 10 are combined.

5 is a cross-sectional view of the inner body 60 made of casting.

According to FIG. 5, the combination 180 is located at the end of the cast body 60 made of a cast containing the tension material and is located at the distal end of the cast body 60 including the tension member. Coupling with the connection portion 100 of the lower end, whereby the tension member removal anchor 10 and the inner body 60 made of a cast including the tension material is integrated.

Referring to the operation of the embodiment according to the present invention configured as described above are as follows.

Figure 6a is a tension member installation of the tension member removal anchor.

According to FIG. 6A, the tension member removing anchor 10 maintains the tension member inserted into the tension member removal anchor 10 in a single line. At this time, the tapered three-segment wedge 110 is inserted into the tapered groove of the inner portion of the cylinder 70, the three-split wedge 110 is the tension member 50 is inserted into the tension member insertion hole 90 of the lower end of the cylinder 70 ), And as the restoring force increases, the pressure of the inner portion of the cylinder 70 increases, so that the clearance of the three-split wedge 110 is narrowed, and the lateral pressure increases, thus increasing the binding force with the tension member 50.

6B is a progress diagram of the removal of the tension material of the anchor 10 for removing the tension material.

According to FIG. 6B, the tension member 50 installed in the tension member removal anchor 10 overcomes the bearing force of the wedge support spring 130 by the repulsive force due to the removal of the tension force, and pushes up the three-split wedge 110. As the clearance of the split wedge 110 is increased, the lateral pressure between the three-split wedge and the tension member is reduced, so that the binding force disappears. At this time, the detent 160 of the stop spring bolt 150 fixed by the three division wedge disappears while the restraint disappears by the forward spring 140, and the cylinder 70 is advanced to return the three division wedge. Prevent. As a result, the three-part wedge is applied to the detent, so that the lateral pressure and play of the three-part wedge are maintained, and the tension member can be easily removed.

In particular, the support spring 130 of the three-segment wedge is compressed only when a certain load or more, so that the three-segment wedge can be retracted. By preventing the increase of mechanical reliability of the anchor.

Figure 6c is a tensile material removal complete view of the tension member anchor.

According to FIG. 6C, the tension member is completely removed from the anchor, and the tension member is prevented from being caught by the detent 160 of the three-split wedge gas spring bolt 150.

The casting body 60 made of a cast material including the tension member of FIG. 5 has a hassle that needs to be bent from the outside when the existing casting body 60 is fixed in the form of inserting a tension member in the center thereof. The cast body 60 is formed by inserting a tension member therein, and thus does not require a separate bending process.

In addition, as shown in Figures 1 and 5, the tension member removal anchor has a connection portion 100 that can be coupled to the coupling means in the lower portion of the cylinder 70 of Figure 2 as a casting comprising a tension member removal anchor 10 and the tension member It is possible to connect the load-bearing body 60 by a simple operation, excellent workability, mechanical stability.

As described above, the present invention is an anchor system consisting of a tension member removal anchor used for a single-strand tension member and a load bearing body that does not require bending, and a coupling means for coupling the tension member removal anchor and the casting load body. Unlike the anchors of the prior art, the tension member removal anchor has a single-strand tension member structure, which is simple in structure, reduces the number of parts of the anchor, and lowers the manufacturing cost. It is remarkably superior to shorten the working time, and because of its simple structure, the reliability of the mechanical function of the anchor is very high.

A spring for supporting the three-segment wedge is installed inside to prevent the movement of the three-segment wedge even in the event of external shock, thereby maintaining the force for binding the tension member, and in tension removal work unlike the prior art anchors, It is made of structure that can be easily removed by using repulsive force, so it can shorten the work time to remove tension member.

In the case of the casting load body made of casting has a structure that is installed by inserting a tension member inside the load body, it is easy to remove the tension material because it prevents deformation and distortion of the tension material, and does not bend directly on the tension material, Installation is also simple.

In addition, unlike the U-turn anchor of the prior art, since a straight tension member is used, the length of the tension member to be drawn is reduced by half without the need for a separate load-bearing body in the grouting part, and particularly in the pulling operation of the tension member. It can be easily removed, and the drawn tension member can be reused and is economically superior.

Claims (9)

Elastic means for preventing the retraction of the three-segment wedge in the upper portion, a cap that engages the elastic means, a cylinder that engages the cap, and a three-part wedge that is inserted into the central through hole of the cylinder and binds a single line tension member. Tensile material disassembly fixing device consisting of an anchor consisting of, the inner body made of a casting for inserting the tension member therein, and a coupling means for coupling the anchor and the inner body made of the casting. 2. A tension releasable anchoring device as recited in claim 1, wherein said anchor is a resilient means for preventing retraction of the trisegment wedge between the cap and the trisegment wedge. The fixing member dismountable fixing device according to claim 1, wherein the anchor has a perforation on the lower side of the cylinder, and a stop spring bolt is inserted to prevent the return of the three-split wedge retracted from the perforation. According to claim 1, wherein the anchor is a tension member dismountable fixing device having a coupling portion that can be engaged with the coupling means at the lower end of the cylinder. 5. The tension member dismountable fixing device according to claim 4, wherein the coupling means is a nipple and a socket or a unidirectional nipple capable of coupling the anchor and the cast inner body. According to claim 1, wherein the casting body is a form that can be inserted into the tension member therein, it is possible to disassemble the tension member having a coupling portion capable of engaging with the anchor by inserting the coupling means in the end to the inside. Fusing device. The fixing material dismountable fixing device according to claim 1, wherein the casting inner body includes a single tension member inserted into the cast body to form a fixing device in a straight line. The tension member dismountable fixing device according to claim 6, wherein the casting body is formed of a structure capable of being used individually or in plurality. In the dismantling process of the tension member, the repulsive force acts on the anchor beyond the preservation force of the three-part wedge support spring, the three-part wedge support spring is contracted by the repulsive force of the tension member, and the spring is contracted. The step of retracting the three-split wedge inside the anchor in the space inside the created cylinder, the play of the three-split wedge, and the retracted three-split wedge stop the spring bolt for stopping the return of the three-split wedge. The step of preventing the return by the step, the three-split wedge is prevented the fall is separated from the tension member while maintaining the play, and after the separation step of the anchor comprising the step of removing the tension member by pulling the tension member How to remove tension material.