KR100849133B1 - Temporary apparatus for construction of seismic isolation system and construction method of seismic isolation system - Google Patents

Abstract

A temporary structure for assembling and installing a seismic isolation system and an installation method of a seismic isolation system using a temporary structure are provided to construct a lower concrete structure below a seismic isolation system easily and to assemble and install a seismic isolation system on the lower concrete structure simply by fixing an installation site of a connecting nut for connecting a seismic isolation system and a lower concrete structure exactly and burying under the lower concrete structure, to place concrete for a lower concrete structure tightly by excluding the installation of a plate type member, and to shorten a period of construction and to reduce the cost required by simplifying the installation progress of a seismic isolation system. A temporary structure(100) for assembling and installing a seismic isolation system comprises a support(110) placed to put over the inside and the outside of a concrete form simultaneously on the concrete form and provided with a first through hole(111) formed on a part located in the concrete form, a level regulator composed of first, second nuts(131,132) and a control bolt(133) and coupled to a fixture(120) and the support to regulate the level of the support, a separator(140) provided with a through hole(141), placed to make the through hole located correspondingly to the first through hole of the support below the support and formed to separate the support easily after placing concrete in the concrete form, a connecting nut(150) placed to be located below the separator, and a fastening bolt(160) penetrating the first through hole of the support on the support and fastening with the connecting nut after penetrating the through hole of the separator. An installation method of a seismic isolation system using a temporary structure comprises the steps of: installing a lower concrete structure by installing a concrete form at the height below an installation site of a seismic isolation system and arranging reinforcing bars; after fixing an installation site of a connecting nut by installing a fixture to the upper side or the outside of the concrete form and fastening a separator, a connecting nut and a fastening bolt to a support, binding the support and the fixture using a level regulator; leveling the support by regulating the level regulator of the temporary structure; dismantling and removing the temporary structure except the connecting nut buried under the lower concrete structure; fastening a fixing bolt to the connecting nut exposed to the upper side of the lower concrete structure and installing a seismic isolation system; and installing an upper concrete structure by installing an upper concrete form and arranging reinforcing bars.

Description

Temporary apparatus for construction of seismic isolation system and construction method of seismic isolation system

1 is a construction sequence diagram showing a conventional method for installing a seismic isolator.

2 and 3 is a view showing a temporary structure for the assembly installation of the base isolation device according to the present invention.

4 to 7 is a construction sequence diagram showing a method for installing a base isolation device using the temporary structure of Figure 3;

<Description of the symbols for the main parts of the drawings>

100: temporary structure for assembling and installing the seismic isolator

110: support 120: fixture

130: level control 140: insulating material

150: connection nut 160: tightening bolt

10: concrete form 20: concrete rebar

30: lower body 40: isolation device

60: fixing bolt

The present invention relates to a temporary structure for installing a seismic isolator in the middle of a sphere or a base and a method for installing a seismic isolator using the same. The connecting nut connecting the device and the lower sphere can be fixed to the lower sphere while accurately fixing the installation position thereof, thereby facilitating the construction of the lower sphere under the seismic isolator and It relates to a temporary structure that allows easy assembly and installation, and a method for installing a seismic isolator using the same.

Seismic isolation technology, one of the technologies for safely designing a structure in response to seismic forces, is a special separation device that can reduce the vibration and impact of a structure due to an earthquake between the structure and the foundation or anywhere in the structure. It is a technology to block or reduce the ground vibration caused by an earthquake to be transmitted directly to the upper structure by inserting a seismic isolator. This seismic isolation technology can be effectively applied to existing structures that are not designed for earthquake as well as new structures, and excellent vibration reduction effect ensures excellent performance not only in earthquake safety but also in terms of usability. Not only are they widely adopted in China, China and New Zealand, but also in Korea.

The core of the seismic isolator technology is the installation of the seismic isolator, Figure 1 shows a conventional conventional seismic isolator installation method. In general, the seismic isolator is formed in the form of an elastic rubber layer between the upper and lower plates, which has been conventionally applied for the installation of the seismic isolator, as shown in the first sphere from the position where the seismic isolator is first installed to a lower part of the portion. (Base or column), and then install the temporary support and anchor plate as steel aggregate on the primary sphere, embed the anchor plate into concrete to form the secondary sphere, and finally install the seismic isolation device on the anchor plate. After joint inspection, reinforced with epoxy, etc., a tertiary sphere, the upper sphere, is constructed on the seismic isolator.

However, such a conventional installation method involves various problems as follows. First, since the installation of the seismic isolator is required to install a temporary steel support, a separate steel cost and a process separate from the seismic isolator, and the construction is complicated, difficult and time-consuming. Second, the number of installation parts increases when installing the temporary support and anchor plate, the construction is difficult due to the settlement and interference of the concrete reinforcement. Third, there is a hassle to divide the construction of the lower sphere twice to install the temporary support. Fourth, since concrete or non-shrink mortar is poured after constructing the anchor plate, it is not easy to concretely place concrete under the anchor plate, and the problem of concrete placing is mainly related to the size of concrete cross-section. The solution is solved by a large construction method, but this solution causes additional problems such as an increase in construction cost and a reduction in the use space.

In order to improve the above problems, in recent years, the installation of the temporary support is omitted in the above procedure, and immediately adopting a method of welding the lower plate of the seismic isolator to the concrete reinforcement, or anchoring the seismic isolator after the lower concrete is completely constructed. A method of drilling and installing is proposed. However, the method of directly welding the lower plate to the concrete reinforcing bar is not preferable because it may heat the reinforcing bar forming the main body of the structure, which may adversely affect the reinforcing bar. The difficulty is very high, which makes it difficult to secure the density of the process. In addition, the method of drilling the anchor part after complete construction requires a double work, which is a waste of material, and may cause damage to the existing finished structure according to the drilling work, it is difficult to be considered a preferable method in terms of cost and process. .

The present invention has been made to improve the above-mentioned conventional problems, the installation nut is fixed exactly to the installation nut connecting the base isolation device and the lower sphere at the time of construction of the lower sphere under the base isolation device proceeding prior to the installation of the base isolation device; The technical purpose is to provide a temporary structure that enables easy construction of the lower sphere under the seismic isolator, as well as easy assembly and installation of the seismic isolator on the completed lower sphere.

Another object of the present invention is to provide a temporary structure for assembling and installing a seismic isolator that enables the compact placement of the lower concrete concrete, as it is not necessary to install the plate-shaped member in the lower concrete construction step.

Still another object of the present invention is to provide a method for installing a seismic isolator as well as concrete construction, so that the seismic isolator installation process can be simplified and the air shortening and cost can be reduced.

In order to achieve the above object, the present invention is a temporary structure that is installed after the concrete formwork is installed at a height below the base isolation device installation position in order to install the base isolation device in the middle of the sphere of the base or pillar,

A support disposed on the spherical die at the same time to be disposed inside and outside the spherical formwork, the support having a first through hole formed at a portion located inside the spherical formwork; Fixture fixed to the upper or outside the concrete formwork under the support; A level adjusting tool which is coupled to the fixture and the support to adjust the level of the support; An insulator formed in the plane, the insulating material being disposed such that the through hole is coincident with the first through hole of the support; A connection nut disposed below the isolation material; And a fastening bolt which passes through the first through hole of the support on the support and then passes through the through hole of the isolation material and then fastens with the connection nut. 2. do.

In addition, the present invention is a method for installing a base isolation device in the middle of the sphere or the base of the pillar using a temporary structure for the assembly installation of the base isolation device,

(a) installing the concrete formwork to a height below the installation position of the seismic isolator and reinforcing the concrete reinforcing bars; (b) installing a temporary structure for assembling and installing the seismic isolator while fixing the fixture to the upper or outer portion of the concrete formwork, and installing the support to be positioned above the concrete formwork; (c) adjusting the level of the support while adjusting the level control of the temporary structure for assembling and installing the base isolation device; (d) pouring concrete under the support of the temporary structure for assembling and installing the seismic isolator in the concrete formwork to complete the lower sphere; (e) dismantling and removing the temporary structure for assembling and installing the seismic isolator except for the connection nut embedded in the lower sphere; (f) installing a seismic isolator while fastening the fixing bolt to the connection nut exposed on the upper surface of the lower sphere; And (g) constructing an upper sphere over the base isolation device.

2 and 3 show a temporary structure 100 for assembling and installing the base isolation device according to the present invention. The present invention is a temporary structure 100 that is installed after the concrete formwork 10 is installed at a height below the installation position of the base isolation device 40 in order to install the base isolation device 40 in the middle of the sphere or pillar, the support 110 , Fixture 120, level adjusting device 130, isolating material 140, the connection nut 150, and comprises a fastening bolt 160. If the conventional temporary structure is provided as an anchor plate and the anchor plate is entirely embedded in the lower sphere 30, the temporary structure 100 of the present invention is the connection nut 150 only permanently to the lower sphere 30. The remaining components (supports, fixtures, level adjusters, isolation materials, fastening bolts) are embedded and reusable as true construction materials.

Specifically, the temporary structure 100 of the present invention, the first through-hole 111 is disposed in the portion located inside and outside the concrete formwork 10 on the concrete formwork 10 at the same time. Formed support 110; A level adjusting device (130) for binding to the fixture (120) and the support (110) to adjust the level of the support (110); A through-hole 141 is formed in the surface is disposed so that the through-hole 141 is positioned to match the first through-hole 111 of the support under the support (110); A connection nut 150 disposed below the isolation material 140; And a fastening bolt 160 that passes through the first through hole 111 of the support on the support 110 and passes through the through hole 141 of the isolation material and then engages with the connection nut 150.

The support 110 has a rod-shaped member in the embodiment of Figures 2 and 3, but may be a plate-shaped member, but the concrete placing work is not disturbed when placing concrete inside the concrete formwork (10) In order to do not need to cover much of the inside of the concrete formwork (10) In consideration of this, the rod-shaped than the plate-shaped is preferable. In addition, the support 110 is used as a reference to match the horizontal level to adopt a form that can have a horizontal degree.

The fixture 120 is a configuration that is installed to provide a support point of the support 110, in Figures 2 and 3 is provided in the form that can be installed on the top of the concrete formwork (10). That is, the conventional formwork is composed of a formwork 11 and a horizontal or vertical reinforcement 12 for reinforcing the formwork, in consideration of the form of the formwork fixture 120 to the upper surface of the horizontal reinforcement 12 The binding hole 122 is provided so that it can install (refer to the installation state of FIG. 5).

The level adjusting device 130 is a configuration provided to adjust the horizontal level of the support, in the embodiment of Figures 2 and 3 shows the form of the level is adjusted according to the fastening degree of the bolt. The first and second nuts 131 and 132 and the adjusting bolt 133 is composed of. However, in order to use the level adjusting device 130 of the above configuration, the support 110 should be configured such that the second through hole 112 is formed in a portion located outside the concrete formwork 10, Fixture 120 should be configured to be fixed to the concrete formwork 10 in the form of a nut formed with a female screw hole 121 on the upper surface. Only then, the first nut 131 is disposed on the support 110 at a position coincident with the second through hole 112 of the support, and the second nut 132 is supported between the support 110 and the fixture 120. The second through hole 132 and the female threaded hole 121 of the fixture, and then the adjustment bolt 133, the first nut 131, the second of the support in order on the first nut 131 When fastened to the through hole 112, the second nut 132, and the female screw hole 121 of the fixture, the fastening positions of the first nut 131 and the second nut 132 are simultaneously adjusted with the support 110 therebetween. Being able to match the horizontal level of the support (110).

The insulating material 140 is configured to facilitate the disassembly and disassembly of the support 110 after concrete is poured into the concrete formwork 10, and is isolated if the role of the insulating material 140 is considered. As the material 140, it is preferable to adopt a material having a smooth surface such as rubber to facilitate separation from concrete. The connection nut 150 is disposed below the isolation material 140, and the coupling bolt 160 passes through the first hole 111 and the isolation material 140 of the support on the support 110 in the connection nut 150. ) Is to be fastened, whereby using the insulating material 140 of the rubber material it is possible to tighten the airtight without generating a gap between the support 110 and the insulating material 140 and the connection nut 150. The airtight fastening of the connection nut 150 and the isolation material 140 prevents the concrete being poured for the construction of the lower sphere 30 from the fastening bolt 160 to help dismantle the fastening bolt 160. .

As a result of such a configuration, when fixing the installation position of the support 110 while adjusting the horizontal level of the support 110 with the level adjusting device 130, the isolation material 140, the connection nut 150 bound to the support 110. ) And the fastening bolt 160 is disposed in a fixed position within the concrete formwork (10). That is, the connection nut 150 is in a state of floating in the concrete form 10 while being fixed to the support (110). As a result, when the concrete is poured into the concrete formwork 10 at a height at which the insulating material 140 under the support 110 is not completely embedded, the connecting nut 150 is embedded in the concrete, and in the future, the fastening bolt 160 is released to release the insulating material. Removing 140 may allow only the connection nut 150 to be embedded in concrete while exposing the bolted portion of the connection nut 150 to the outside.

On the other hand, the temporary structure 100 as shown in Figure 2 is provided with a plurality of each component when installing the seismic isolation device 40 will be installed in several places at regular intervals. In consideration of such an installation state, the present invention proposes to provide a temporary structure 100 system by interconnecting a plurality of supports 110 as shown in FIG. 3. The temporary structure 100 system is advantageous in that the support 110 is lengthened so that the horizontal level can be uniformly and accurately matched, and the installation is simplified.

4 to 7 is a construction flowchart showing a method for installing the base isolation device 40 using the temporary structure 100 of FIG. 3, and a method for installing the base isolation device 40 in the middle of the concrete step by step will be described. Is as follows.

(a) Installation of concrete formwork and concrete reinforcement-Figure 4

In the step of constructing the lower sphere 30 under the base isolation device 40, the concrete formwork 10 is installed to a height below the installation position of the base isolation device 40 and the concrete reinforcing bar 20 is disposed. Concrete formwork 10 may be installed to include a formwork 11 and a reinforcing rod 12, the concrete reinforcement 20 is to use a pre-assembled rebar.

(b) Installation of temporary structure 100-FIG.

The temporary structure 100 of FIG. 2 or FIG. 3 is installed. Of course, the temporary construction body 100 of Figure 3 is preferred for ease of installation.

Temporary structure 100 is fixed to the fixture 120 is installed on the top or the outside of the concrete formwork 10, and the connecting member 150 and the connecting nut 150 and the fastening bolt 160 by fastening the connecting nut to the connection nut Fix the installation position of 150 and then install in a way to bind the support 110 and the fixture 120 as a level adjusting device (130). Accordingly, the temporary structure 100 is installed so that only the insulating member 140 and the connection nut 150 of the temporary structure 100 is positioned inside the concrete form 10 while placing the support 110 above the concrete form 10. do. At this time, the insulating material 140 and the connecting nut 150 can be installed without causing interference with the concrete reinforcing bar 20 because it is a vertical small member, and as a result, the concrete reinforcing bar 20 in the step (a) Reinforcement process is able to proceed fairly freely.

(c) Level adjustment-FIG. 5

The horizontal level of the support 110 is adjusted while adjusting the level adjusting mechanism 130 of the temporary structure. When the horizontal level of the support 110 is matched, the connection nut 150 fastened and fixed to the support 110 also has a vertical degree.

Since the fixing bolt 60 is fastened to the connection nut 150 to fix the base isolation device 40 in the future, the horizontality of the base isolation device 40 will be determined according to securing the verticality of the connection nut 150, so that the connection nut ( It is important to ensure the verticality of 150). Therefore, the connection nut 150 should be made to match the horizontal level of the support 110 to have a correct vertical degree.

(d) concrete casting

Placing concrete under the support 110 of the temporary structure within the concrete formwork 10 to complete the lower sphere (30). At this time, the concrete placing height should be so that the connection nut 150 under the support 110 is completely embedded. In particular, when the height of the concrete is placed up to the height below the isolation material 140 of the temporary structure 100 and coincides with the bottom surface of the isolation material, demoulding of the isolation material 140 is facilitated and the bottom surface of the insulation material is lowered. It can be matched with the surface of 30), it is possible to uniform surface construction of the lower sphere (30).

(e) Disassembly of the temporary structure 100-FIG. 6

Dismantle and remove the temporary structure 100 except for the connection nut 150 embedded in the lower sphere 30. Since the isolation material 140 is also separated from the connection nut 150 by dismantling the temporary structure 100, the connection nut 150 is exposed on the upper surface of the lower sphere 30. Dismantling can be easily dismantled by loosening the bolts and nuts, and the disassembled temporary structure 100 can be reused.

(f) Installation of Isolation Device 40-Fig. 7

The seismic isolation device 40 is installed while fastening with the fixing bolt 60 to the connection nut 150 exposed on the upper surface of the lower sphere 30.

If the upper surface of the lower sphere 30 is uniformly constructed, it is possible to install the seismic isolator 40 directly above the lower sphere 30. In this case, the number of permanent parts for installing the seismic isolator 40 is minimized to reduce the material cost. It may be reduced (see FIG. 7 (a)). However, if the upper surface of the lower sphere 30 is not uniformly installed, the horizontal plate 41 is fastened to the connection nut 150 with the fixing bolt 60 before the base isolation device 40 is installed. The seismic isolator 40 is bonded to the horizontal plate 41 to be installed (see FIG. 7 (b)). Of course, the horizontal plate 41 is to be installed while adjusting the horizontal level, the gap generated between the lower sphere 30 and the horizontal plate 41 in the process of adjusting the horizontal level to fill the epoxy 31 and the like.

(g) Upper spherical construction

The upper sphere is constructed above the base isolation device 40. As in the conventional method, the upper sphere proceeds by installing the upper concrete formwork 10 and reinforcing the concrete reinforcing bar 20. The completion of the upper sphere completes the installation of the base isolation device 40 in the middle of the sphere.

As described above, the method for installing the seismic isolator 40 of the present invention enables the construction of the lower spherical body 30 only once, and at the same time, various parts of the temporary structure 100 for installing the seismic isolator 40 are embedded in the sphere. It can be said to be economically advantageous because it can be minimized and reused.

Although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that various substitutions, additions, and modifications can be made without departing from the spirit and spirit as described above. It will be appreciated that such modified embodiments also fall within the protection scope of the invention as defined by the appended claims below.

According to the present invention as described above, the following effects are expected.

First, it is possible to unify the two processes previously used for the construction of the lower structure under the seismic isolator into one process, which enables the reduction of air, process, and cost.

Second, by minimizing the member permanently embedded in the sphere with only the connection nut, it is possible to minimize the problem caused by the interference with the installation of the concrete reinforcement, and further recycling of the member is possible material savings effect is expected.

Third, it is not necessary to purchase the plate when constructing the lower concrete to secure enough space for placing concrete, and as a result, it is possible to construct the cross-sectional size of the sphere according to the structural calculation result, thereby reducing construction cost and securing space efficiency. Contribute.

Claims (6)

As a temporary structure that is installed after the concrete formwork 10 is installed at a height below the installation position of the base isolation device 40 to install the base isolation device 40 in the middle of the sphere of the foundation or pillar, A support 110 disposed on the concrete formwork 10 so as to extend simultaneously inside and outside the concrete formwork 10 and having a first through-hole 111 formed at a portion located inside the concrete formwork 10; Fixing member 120 is fixed to the upper or outside the concrete formwork 10 under the support (110); A level adjusting device (130) for binding to the fixture (120) and the support (110) to adjust the level of the support (110); A through hole 141 is formed in the plane, and the through hole 141 is disposed so as to be aligned with the first through hole 111 of the support under the support 110; A connection nut 150 disposed below the isolation material 140; And, A fastening bolt 160 which passes through the first through hole 111 of the support above the support 110 and then passes through the through hole 141 of the isolation material and then engages with the connection nut 150; Temporary structure for assembly installation of the base isolation device, characterized in that comprising a. In claim 1, The support 110, the fixture 120, the level adjusting device 130, the isolation material 140, the connection nut 150, the fastening bolt 160 is provided with a plurality, respectively, the plurality of support 110 Temporary structure for assembly installation of the base isolation device, characterized in that provided by the temporary structure system by connecting. The method of claim 1 or 2, The support 110 is a second through-hole 112 is formed in a portion located outside the concrete formwork 10, the fastener 120 is a concrete formwork 10 in the form of a nut formed with a female screw hole 121 in the upper surface Fixedly installed) The level adjusting device 130, A first nut 131 disposed on the support 110 at a position coinciding with the second through hole 112 of the support; A second nut 132 disposed between the support 110 and the fixture 120 at a position coincident with the second through hole 112 of the support and the female screw hole 121 of the fixture; After adjusting the first nut 131 and the first nut 131 on the first nut 131 through the second through hole 112 of the support and fastening with the second nut 132 and then the adjustment bolt for fastening (120) ( 133); temporary structure for the assembly installation of the base isolation device, characterized in that comprising a. As a method of installing the seismic isolator 40 in the middle of the sphere of the base or pillar by using the temporary structure 100 for assembling and installing the seismic isolator of claim 1, (a) installing the concrete formwork 10 to a height below the installation position of the seismic isolator 40 and reinforcing the concrete reinforcing bar 20; (b) while installing the fixture 120 to the upper or outside of the concrete formwork 10, install the temporary structure 100 for the assembly installation of the seismic isolation device, the support 110 is located above the concrete formwork (10) Installing to enable; (c) adjusting the level level of the support 110 while adjusting the level adjusting port 130 of the temporary structure for assembling and installing the base isolation device; (d) pouring concrete under the support 110 of the temporary structure for assembling and installing the seismic isolator in the concrete formwork 10 to complete the lower sphere 30; (e) dismantling and removing the temporary structure 100 for assembling and installing the seismic isolator except for the connection nut 150 embedded in the lower sphere 30; (f) installing the isolating device 40 while fastening the fixing bolt 60 to the connection nut 150 exposed on the upper surface of the lower sphere 30; And, (g) constructing an upper sphere on the base isolation device 40; Isolation device installation method characterized in that it comprises a. In claim 4, The step (d) is a seismic isolator installation method, characterized in that made up to a height below the isolation material 140 of the temporary structure for the installation and assembly of the isolator. In claim 4, In the step (f), the horizontal plate 41 is installed by fastening to the connection nut 150 with the fixing bolt 60, and then the horizontal plate 41 is bonded to the base isolation device 40. Isolation device installation method, characterized in that made.

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