JP2020002679A - Scattering prevention device and lift-up method - Google Patents
Scattering prevention device and lift-up method Download PDFInfo
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- JP2020002679A JP2020002679A JP2018124234A JP2018124234A JP2020002679A JP 2020002679 A JP2020002679 A JP 2020002679A JP 2018124234 A JP2018124234 A JP 2018124234A JP 2018124234 A JP2018124234 A JP 2018124234A JP 2020002679 A JP2020002679 A JP 2020002679A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
Description
本発明は、飛散防止装置及び飛散防止装置を用いたリフトアップ工法に関する。 The present invention relates to a scattering prevention device and a lift-up method using the scattering prevention device.
従来より、内部に柱のない大空間の建築物を構築する際、高所に構築される屋根等の建築物の一部分を吊り上げる方法として、例えば、特許文献１で開示されているようなリフトアップ工法が広く採用されている。 2. Description of the Related Art Conventionally, when building a large space building having no pillars inside, as a method of lifting a part of a building such as a roof constructed at a high place, for example, a lift-up method disclosed in Patent Document 1 The construction method is widely used.
特許文献１のリフトアップ工法は、タンク側壁を先行して構築する一方で、タンク側壁の内側におけるタンク底部でタンク屋根を構築しておき、ＰＣケーブルを装着したジャッキをタンク側壁に支持するようにして設置する。その後、タンク底部で構築したタンク屋根をＰＣケーブルの下端部に連結し、ＰＣケーブルとジャッキを介して所定高さまで吊り上げる工法である。 In the lift-up method of Patent Document 1, while a tank side wall is constructed in advance, a tank roof is constructed at a tank bottom inside the tank side wall, and a jack to which a PC cable is attached is supported on the tank side wall. And install it. Thereafter, the tank roof constructed at the bottom of the tank is connected to the lower end of the PC cable, and is lifted to a predetermined height via the PC cable and a jack.
このような工法は、屋根等の高所に構築される建築物の一部分を、地組できるため安全であるだけでなく、足場等を設ける必要が無いため、コストを大幅に削減できるとともに工期を短縮可能な合理的な方法である。 Such a construction method is not only safe because a part of a building constructed on a high place such as a roof can be grounded, but also because there is no need to provide scaffolds, the cost can be significantly reduced and the construction period can be reduced. It is a reasonable method that can be shortened.
しかし、例えば建築物の一部分である屋根を、構築予定の建築物における外側躯体の内方で構築する際、屋根躯体を地組した後、当該屋根躯体を吊持状態で所定の高さ位置に停止させて屋根躯体の下方に作業空間を形成し、この作業空間を利用して、屋根躯体に対して設備機器を設置したり天井仕上げを施し、屋根を構築する場合がある。 However, for example, when building a roof that is a part of a building, inside the outer frame of the building to be built, after laying the roof frame, the roof frame is suspended at a predetermined height position. There is a case where a roof is constructed by stopping and forming a work space below the roof skeleton, and using this work space, installing equipment and finishing the ceiling on the roof skeleton.
このような場合、数週間から数か月にわたって屋根躯体を吊持した状態で所定の高さ位置に停止させることとなるが、この期間中、ＰＣケーブル等の吊材における屋根躯体とジャッキとの間の範囲は、常時風雨に晒される環境にあるため、防錆剤を塗布する等の対策を行っても腐食を生じやすい。 In such a case, the roof frame is suspended at a predetermined height while being suspended for several weeks to several months.During this period, the connection between the roof frame and the jack in the hanging material such as a PC cable is performed. Since the area between them is in an environment that is constantly exposed to wind and rain, even if measures such as applying a rust preventive are taken, corrosion is likely to occur.
吊材に腐食が生じると、風雨によって錆汁や錆粉が飛散して構築中の建築物に付着し錆色の汚れが生じるだけでなく、施工現場近隣の敷地にも飛散して既存家屋や構造物を汚す等、周辺環境に悪影響を及ぼす恐れが生じる。 If the suspension material is corroded, wind and rain will cause rust juice and rust powder to scatter and adhere to the building under construction, causing rust-colored stains. There is a risk that the surrounding environment will be adversely affected, such as soiling.
本発明は、かかる課題に鑑みなされたものであって、その主な目的は、吊材に発生する錆を低減するとともに、錆が発生した場合にも吊材に付着した錆汁等の水滴や錆粉等の粉末の飛散を防止することの可能な、飛散防止装置および飛散防止装置を用いたリフトアップ工法を提供することにある。 The present invention has been made in view of such problems, and its main purpose is to reduce rust generated on the hanging material, and to prevent water drops such as rust juice and the like attached to the hanging material even when rust occurs. An object of the present invention is to provide a scatter prevention device and a lift-up method using the scatter prevention device, which can prevent scatter of powder such as rust powder.
かかる目的を達成するため本発明の飛散防止装置は、吊材に付着した水滴や粉末の飛散を防止するための飛散防止装置であって、前記吊材を被覆する筒状の伸縮管と、該伸縮管を前記吊材に沿って伸長及び収縮させる伸縮装置と、を備えることを特徴とする。 To achieve this object, the anti-scattering device of the present invention is an anti-scattering device for preventing water droplets and powder attached to the suspending material from scattering, comprising a tubular telescopic tube covering the suspending material, And a telescopic device for expanding and contracting the telescopic tube along the hanging material.
上記の飛散防止装置によれば、筒状の伸縮管で吊材を被覆することにより、吊材を風雨に晒される環境から保護できる。これにより、防錆剤を塗布しても錆が生じるような長期間にわたって吊材を使用する際、錆の発生量を低減することが可能となる。また、吊材に錆が発生しても、伸縮管により吊材に付着した錆汁等の水滴や錆粉等の粉末の飛散を防止でき、周辺環境に悪影響を与えることがない。 According to the above-described scattering prevention device, by covering the hanging material with the tubular telescopic tube, the hanging material can be protected from the environment exposed to the wind and rain. This makes it possible to reduce the amount of rust generated when the hanging material is used for a long period of time in which rust is generated even when the rust preventive agent is applied. Further, even if rust is generated on the hanging material, the telescopic tube can prevent water droplets such as rust juice and powder such as rust powder attached to the hanging material from scattering, and do not adversely affect the surrounding environment.
また、本発明のリフトアップ工法は、構築予定の建築物の一部分を地組した後に吊り上げる、請求項１に記載の飛散防止装置を用いたリフトアップ工法であって、前記伸縮管を貫通させた前記吊材で、前記建築物の一部分を吊持し、吊り上げ動作の停止期間中は、前記伸縮装置を介して前記伸縮管を伸長させ、前記吊材の露出部分を被覆し、吊り上げ動作の開始時に、前記伸縮装置を介して前記伸縮管を収縮させ、前記吊材を露出させることを特徴とする。 Further, the lift-up method of the present invention is a lift-up method using the shatterproof device according to claim 1, wherein a part of a building to be constructed is lifted after the ground is laid, and the telescopic tube is penetrated. The suspending material suspends a part of the building, and during a suspension period of the lifting operation, extends the telescopic tube through the telescopic device to cover an exposed portion of the suspending material, and starts the lifting operation. Occasionally, the telescopic tube is contracted through the telescopic device to expose the hanging material.
上記のリフトアップ工法によれば、吊材の状態を目視確認しながら、建築物の一部分の吊り上げ作業を実施できる一方で、吊持状態で所定の高さ位置に停止する期間が長期間にわたる場合には、吊材を風雨に晒される環境から保護することができる。したがって、安全性を確保しつつ、錆の発生量を低減することが可能になるとともに、吊材に錆が生じた場合にも錆汁や錆粉の飛散を防止して、リフトアップ工法にて構築する建築物を高品質に保持することが可能となる。 According to the above-mentioned lift-up method, while a part of the building can be lifted while visually confirming the state of the hanging material, a period in which the suspended state is stopped at a predetermined height position for a long time In this way, the suspension can be protected from the environment exposed to the weather. Therefore, while ensuring safety, it is possible to reduce the amount of rust generated, and also to prevent rust juice and rust powder from scattering even when rust is generated on the hanging material, and use the lift-up method. It is possible to maintain the building to be constructed with high quality.
本発明によれば、水滴の拡散を防止する材料よりなる筒部を備える伸縮管で吊材を被覆する簡略な構成で、吊材を風雨から保護できるため錆の発生量を低減できるとともに、吊材に錆が発生した際にも吊材に付着した錆汁等の水滴や錆粉等の粉末の飛散を防止することが可能となる。 ADVANTAGE OF THE INVENTION According to this invention, since the hanging material can be protected from wind and rain with a simple configuration in which the hanging material is covered with a telescopic tube having a tubular portion made of a material that prevents the diffusion of water droplets, the amount of rust can be reduced, and Even when rust is generated on the material, it is possible to prevent water droplets such as rust juice and powder such as rust powder attached to the hanging material from scattering.
以下に、飛散防止装置および飛散防止装置を用いたリフトアップ工法の詳細を説明するが、これに先立ち、リフトアップ工法を採用する際に用いる設備について説明する。なお、本実施の形態では、リフトアップ工法にて大空間を有する建築物を構築するべく、揚重対象物として建築物の一部分である屋根１２を、柱や外壁等の外側躯体１１の所定の高さ位置に吊り上げる場合を事例に挙げる。 Hereinafter, details of the scatter prevention device and the lift-up method using the scatter prevention device will be described. Prior to this, equipment used when the lift-up method is adopted will be described. In the present embodiment, in order to construct a building having a large space by the lift-up method, a roof 12 which is a part of the building as a lifting object is fixed to a predetermined portion of the outer frame 11 such as a pillar or an outer wall. The case of lifting at a height position is taken as an example.
大空間を有する建築物１０を構成する外側躯体１１に屋根１２を吊り上げるべく、リフトアップ工法を実施するための設備として、図７（ａ）（ｂ）で示すように、先行構築された外側躯体１１に構築されるジャッキ架台１３と、ジャッキ架台１３に設置されるセンターホールジャッキ１４と、センターホールジャッキ１４に装着されるとともに屋根１２に連結される吊材１５と、を備える。 As shown in FIGS. 7 (a) and 7 (b), as an equipment for carrying out a lift-up construction method to lift the roof 12 on the outer frame 11 constituting the building 10 having a large space, the outer frame 11 is constructed in advance. 11, a jack base 13, a center hole jack 14 installed on the jack base 13, and a suspension member 15 mounted on the center hole jack 14 and connected to the roof 12.
＜飛散防止装置＞
飛散防止装置１は、このようなリフトアップ工法を採用する際に用いる設備に備えられるものであって、吊材１５を被覆する伸縮管２と、伸縮管２を吊材１５に沿って伸長及び収縮させる伸縮装置５とを備える。
<Splash prevention device>
The scattering prevention device 1 is provided in equipment used when adopting such a lift-up method, and includes a telescopic tube 2 that covers the hanging member 15, and a telescopic tube 2 that extends and extends along the hanging member 15. And a telescopic device 5 for contracting.
なお、本実施の形態では、吊材１５に複数のＰＣ鋼より線を束にしたものを採用しているが、吊材１５がＰＣ鋼棒やワイヤ等いずれの素材よりなるものであっても、飛散防止装置１を採用することが可能である。 In the present embodiment, a bundle of a plurality of strands of PC steel is used as the hanging member 15, but the hanging member 15 may be made of any material such as a PC steel rod or a wire. It is possible to employ the scattering prevention device 1.
伸縮管２は、図１で示すように、筒部３と筒部３に設置された芯材４とを備え、筒部３は、吊材１５より大きい断面を有し、錆汁等の水滴や錆粉等の粉末を通過させることなく、周辺への拡散を防止することの可能な材料により製作されるものであれば、シート材や網材、金属箔等いずれを採用してもよい。本実施の形態では耐候性を有する防水シートとして知られているＰＶＣターポリンを採用している。なお、ＰＶＣターポリンは、ポリエステル繊維よりなる基布の表裏面をポリ塩化ビニル（ＰＶＣ）を含むコーティング樹脂で被覆したもので、建設分野などで広く使用されているシート材である。 As shown in FIG. 1, the telescopic tube 2 includes a cylindrical portion 3 and a core member 4 installed on the cylindrical portion 3. Any material such as a sheet material, a net material, or a metal foil may be used as long as it is made of a material capable of preventing diffusion to the surroundings without passing powder such as rust powder and rust powder. In the present embodiment, a PVC tarpaulin known as a waterproof sheet having weather resistance is employed. Incidentally, PVC tarpaulin is a sheet material widely used in the construction field and the like, in which the front and back surfaces of a base fabric made of polyester fiber are coated with a coating resin containing polyvinyl chloride (PVC).
また、芯材４は、筒部３の断面形状を保形できるものであって、伸縮管２の長手方向への伸長及び収縮を阻害する材料でなければいずれの材料及び形状のものを採用してもよく、本実施の形態では、ワイヤを螺旋状に加工した伸縮自在のコイルを採用している。 The core material 4 is capable of maintaining the cross-sectional shape of the cylindrical portion 3, and may be of any material and shape unless the material hinders the expansion and contraction of the telescopic tube 2 in the longitudinal direction. In the present embodiment, a telescopic coil formed by spirally processing a wire is employed.
このような構成の伸縮管２は、図６（ａ）で示すように、伸長した状態で少なくとも、地表面上に位置する屋根１２とジャッキ架台１３との間で露出する吊材１５を被覆することの可能な長さを有している。このとき、伸縮管２は１本を長尺とすることで、露出する吊材１５を被覆することの可能な長さを確保してもよいし、伸縮管２を複数連結して必要長さを確保する構成としてもよい。 As shown in FIG. 6A, the telescopic tube 2 having such a configuration covers at least the hanging member 15 exposed between the roof 12 and the jack base 13 located on the ground surface in an extended state. It has a length that can be used. At this time, the length of the telescopic tube 2 may be one long to secure a length capable of covering the exposed hanging material 15, or a plurality of telescopic tubes 2 may be connected to each other to obtain a required length. May be ensured.
伸縮管２は、図２で示すように、上端部に挿入口２１が形成され、下端部に受入口２２が形成されているとともに、挿入口２１および受入口２２の近傍に、ワイヤやカラビナ等の緊結治具６を装着可能な円環金具２３が設置されている。したがって、複数の伸縮管２を連結する際には、上方に位置する伸縮管２の下端部に位置する受入口２２に下方に位置する伸縮管２の上端部に位置する挿入口２１を挿入する。 As shown in FIG. 2, the telescopic tube 2 has an insertion port 21 formed at an upper end, a reception port 22 formed at a lower end, and a wire, a carabiner, or the like near the insertion port 21 and the reception port 22. An annular metal fitting 23 to which the binding jig 6 can be mounted is provided. Therefore, when connecting the plurality of telescopic tubes 2, the insertion port 21 located at the upper end of the telescopic tube 2 located below is inserted into the receiving port 22 located at the lower end of the telescopic tube 2 located above. .
そのうえで、受入口２２及び挿入口２１の近傍に設置されている円環金具２３の両者に緊結治具６を装着する。これにより、上下に位置する伸縮管２は確実に連結されるとともに、受入口２２が下向きに配置されているため、降雨等の場合にも水分が伸縮管２内に侵入することを防止できる。 Then, the binding jig 6 is attached to both the ring metal fitting 23 installed near the receiving port 22 and the insertion port 21. Accordingly, the upper and lower telescopic tubes 2 are reliably connected, and the receiving port 22 is arranged downward, so that it is possible to prevent moisture from entering the telescopic tube 2 even in the case of rainfall or the like.
一方、伸縮装置５は、図２で示すように、ジャッキ架台１３に設置されており、本実施の形態では、ケーブル５１とケーブル５１を巻き上げるウィンチ（図示せず）とを備えるホイストを採用しているが、伸縮管２を吊材１５に沿って上下方向に伸長及び短縮できる装置であればいずれを採用してもよい。 On the other hand, the telescopic device 5 is installed on the jack base 13 as shown in FIG. 2, and in the present embodiment, a hoist including a cable 51 and a winch (not shown) for winding up the cable 51 is employed. However, any device may be used as long as it can extend and shorten the telescopic tube 2 in the up-down direction along the hanging material 15.
ケーブル５１の先端にはケーブルフック５２が設けられており、このケーブルフック５２が伸縮管２の上端部近傍の円環金具２３に装着可能となっている。そして、伸縮装置５は、ウィンチを介してケーブル５１の長さを調整することにより、図６（ａ）および（ｂ）で示すように、伸縮管２を伸長もしくは短縮させることができる。 A cable hook 52 is provided at the end of the cable 51, and the cable hook 52 can be attached to the annular metal fitting 23 near the upper end of the telescopic tube 2. The telescopic device 5 can extend or shorten the telescopic tube 2 as shown in FIGS. 6A and 6B by adjusting the length of the cable 51 via the winch.
このような構成の飛散防止装置１によれば、伸縮管２で吊材１５を被覆することにより、吊材１５を風雨に晒される環境から保護できるため、防錆剤を塗布しても錆が生じるような長期間にわたって吊材１５を使用する際にも、錆の発生量を低減することが可能となる。 According to the scattering prevention device 1 having such a configuration, since the hanging member 15 is covered with the telescopic tube 2, the hanging member 15 can be protected from the environment exposed to the wind and rain. Even when the hanging member 15 is used for such a long period of time, the amount of rust generated can be reduced.
また、吊材１５を被覆する伸縮管２に、錆汁等の水滴や錆粉等の粉末を通過させることなく、周辺への拡散を防止することの可能な材料よりなる筒部３を用いることで、吊材１５に錆が生じても錆汁や錆粉の飛散を、より効果的に防止することが可能となる。したがって、吊材１５をリフトアップ工法に用いた場合に、構築中の外側躯体１１や屋根１２を汚す恐れがない。また、施工現場近隣の敷地を錆汁や錆粉から保護することができ、周辺環境に悪影響を及ぼすことがない。 In addition, the tubular portion 3 made of a material capable of preventing the water droplets such as rust juice and the powder such as rust powder from being diffused to the periphery without passing through the telescopic tube 2 covering the hanging material 15. Therefore, even if rust is generated on the hanging material 15, scattering of rust juice and rust powder can be more effectively prevented. Therefore, when the hanging member 15 is used in the lift-up method, there is no possibility that the outer frame 11 and the roof 12 under construction are soiled. Further, the site near the construction site can be protected from rust juice and rust powder, and does not adversely affect the surrounding environment.
次に、上述する飛散防止装置１を用いた屋根１２のリフトアップ方法を説明するが、まず、リフトアップ工法を採用する際に用いる設備に飛散防止装置１を設置する方法を、図３及び図４を参照しつつ以下に説明する。 Next, a method of lifting up the roof 12 using the above-described scattering prevention device 1 will be described. First, a method of installing the scattering prevention device 1 in equipment used when adopting the lift-up construction method will be described with reference to FIGS. 4 will be described below.
＜飛散防止装置の設置方法＞
まず、図３で示すように、センターホールジャッキ１４およびこれに装着した吊材１５を地上で横臥し、収縮した状態の伸縮管２を吊材１５に貫通させる。
<How to install the scattering prevention device>
First, as shown in FIG. 3, the center hole jack 14 and the hanging member 15 attached thereto are laid on the ground, and the contracted telescopic tube 2 is passed through the hanging member 15.
この後、図２で示すような、吊材１５の下端部近傍に屋根１２と連結するための連結具１６を装着する。本実施の形態では、連結具１６としてクレビスを採用しているが、これに限定されるものではない。 Thereafter, as shown in FIG. 2, a connecting member 16 for connecting to the roof 12 is attached near the lower end of the hanging member 15. In the present embodiment, a clevis is used as the connecting tool 16, but the present invention is not limited to this.
その一方で、図４（ａ）で示すように、構築予定の建築物１０の外側躯体１１を構築し、所定の高さ位置にジャッキ架台１３を設置する。併せて、外側躯体１１の内側では、地上部における作業空間において屋根躯体１２ａを構築して支保工１７に支持させる。 On the other hand, as shown in FIG. 4A, the outer frame 11 of the building 10 to be built is constructed, and the jack base 13 is installed at a predetermined height position. At the same time, on the inside of the outer skeleton 11, the roof skeleton 12a is constructed in the work space on the ground and is supported by the shoring 17.
次に、図４（ｂ）で示すように、伸縮管２を貫通させた吊材１５及びセンターホールジャッキ１４を起立させて、センターホールジャッキ１４をジャッキ架台１３に支持させるとともに、吊材１５に装着した連結具１６を介して屋根躯体１２ａと吊材１５とを連結する。 Next, as shown in FIG. 4 (b), the hanging member 15 and the center hole jack 14 penetrating the telescopic tube 2 are erected, and the center hole jack 14 is supported by the jack base 13, and The roof frame 12a and the suspension member 15 are connected via the attached connecting tool 16.
この後、図５で示すように、ジャッキ架台１３の所定位置に伸縮装置５を設置するとともに、伸縮装置５のケーブル５１を引出してケーブルフック５２を、屋根躯体１２ａの上面近傍で収縮状態に載置されている伸縮管２の上端部近傍に設けた円環金具２３に連結する。 Thereafter, as shown in FIG. 5, the telescopic device 5 is installed at a predetermined position of the jack base 13, and the cable 51 of the telescopic device 5 is pulled out, and the cable hook 52 is placed in a contracted state near the upper surface of the roof frame 12a. It is connected to an annular fitting 23 provided near the upper end of the telescopic tube 2 placed.
以上の作業により、リフトアップ工法を実施するための設備に飛散防止装置１が設置される。なお、伸縮装置５の設置作業と併せて、屋根躯体１２ａを吊材１５に支持させるとともに支保工１７を撤去する。 By the above operation, the scattering prevention device 1 is installed in the equipment for performing the lift-up method. At the same time as the installation of the telescopic device 5, the roof frame 12a is supported by the hanging members 15 and the supporters 17 are removed.
次に、飛散防止装置１にて吊材１５を保護しながら屋根１２の構築作業を行い、リフトアップ工法により屋根１２を吊り上げる手順を示す。 Next, a procedure for constructing the roof 12 while protecting the hanging material 15 with the scattering prevention device 1 and lifting the roof 12 by the lift-up method will be described.
＜リフトアップ工法＞
図６（ａ）で示すように、吊材１５による屋根躯体１２ａの吊り上げ動作を所定の高さ位置で停止し、屋根躯体１２ａの下方に作業空間を確保するとともに、伸縮装置５のケーブル５１を巻き上げることにより伸縮管２を伸長させて、ジャッキ架台１３と屋根躯体１２ａとの間で露出状態にある吊材１５を被覆する。
<Lift-up method>
As shown in FIG. 6A, the lifting operation of the roof frame 12a by the hanging members 15 is stopped at a predetermined height position, a work space is secured below the roof frame 12a, and the cable 51 of the telescopic device 5 is connected. The telescopic tube 2 is extended by being wound up, and the exposed hanging member 15 is covered between the jack base 13 and the roof frame 12a.
このように吊り上げ動作の停止期間中は吊材１５を伸縮管２で被覆し、屋根躯体１２ａの下方に形成された作業空間を利用して、屋根躯体１２ａに天井仕上げを施すとともも設備機器の設置作業を行い、屋根１２を構築する。 As described above, the suspension member 15 is covered with the telescopic tube 2 during the suspension period of the lifting operation, and the roof frame 12a is subjected to ceiling finishing using the work space formed below the roof frame 12a. Is performed, and the roof 12 is constructed.
このとき、伸縮管２は伸縮装置５に連結させたままの状態にしておいてもよいが、例えば、図２で示すように、ジャッキ架台１３に伸縮管２の緊結用支持具１８を設けておき、伸縮管２の上端部近傍に設けた円環金具２３と緊結用支持具１８とを紐材等の緊結具１９により緊結して、伸縮管２をジャッキ架台１３に支持させてもよい。こうすると、リフトアップ工法に複数の吊材１５を用いる場合に、伸縮装置５を使い回すことができ、飛散防止装置１の低コスト化を図ることが可能となる。 At this time, the telescopic tube 2 may be left connected to the telescopic device 5, but for example, as shown in FIG. Alternatively, the annular fitting 23 provided in the vicinity of the upper end of the telescopic tube 2 and the tying support 18 may be tied by a tying device 19 such as a string material to support the telescopic tube 2 on the jack base 13. In this way, when a plurality of hanging members 15 are used for the lift-up method, the telescopic device 5 can be reused, and the cost of the scattering prevention device 1 can be reduced.
この後、屋根１２を吊り上げる吊り上げ動作時に、図６（ｂ）で示すように、伸縮装置５のケーブル５１を繰り出すことにより伸縮管２を収縮させ、ジャッキ架台１３と屋根躯体１２ａとの間で吊材１５を目視できるように露出させる。 Thereafter, during the lifting operation of lifting the roof 12, as shown in FIG. 6B, the telescopic tube 2 is contracted by feeding out the cable 51 of the telescopic device 5, and the cable is suspended between the jack base 13 and the roof frame 12 a. The material 15 is exposed so as to be visible.
こうして吊材１５の目視点検が可能になった状態で、図７（ａ）で示すように、センターホールジャッキ１４及び吊材１５を用いて、屋根１２を所望の高さ位置まで吊り上げる。 In this state where the visual inspection of the hanging member 15 is possible, the roof 12 is lifted to a desired height position by using the center hole jack 14 and the hanging member 15 as shown in FIG. 7A.
上記のリフトアップ工法によれば、吊持された状態の屋根１２を所定期間にわたって停止させる際に、吊材１５の露出部分を伸縮管２で被覆し、吊り上げ動作時には吊材１５を露出させる。これにより、吊材１５の状態を目視確認しながら、屋根１２の吊り上げ作業を実施できる一方で、所定高さ位置で停止する期間が長期間にわたる場合には、吊材１５を風雨に晒される環境から保護することができる。 According to the above-described lift-up method, when the suspended roof 12 is stopped for a predetermined period, the exposed portion of the hanging member 15 is covered with the telescopic tube 2, and the hanging member 15 is exposed during the lifting operation. Accordingly, while the work of lifting the roof 12 can be performed while visually checking the state of the hanging members 15, the environment in which the hanging members 15 are exposed to wind and rain when the period of stopping at the predetermined height position is long is long. Can be protected from
したがって、安全性を確保しつつ、錆の発生量を低減することが可能になるとともに、吊材１５に錆が生じた場合にも錆汁等の水滴や錆粉等の粉末の飛散を防止して、リフトアップ工法にて構築する建築物１０を高品質に保持することが可能となる。 Therefore, it is possible to reduce the amount of rust generated while ensuring safety, and to prevent water droplets such as rust juice and powder such as rust powder from scattering even when rust is generated on the hanging member 15. Thus, the building 10 constructed by the lift-up method can be maintained at a high quality.
本発明の飛散防止装置１及び飛散防止装置１を用いたリフトアップ工法は、上記実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲で種々の変更が可能である。 The anti-scattering device 1 of the present invention and the lift-up method using the anti-scattering device 1 are not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
例えば、本実施の実施の形態では、ケーブルフック５２を伸縮管２の上端部近傍に備えた円環金具２３に設置し、収縮させた状態の伸縮管２が、図６（ｂ）で示すように、屋根１２の近傍に貯留される構成としたが、必ずしもこれに限定されるものではない。例えば、ケーブルフック５２を伸縮管２の下端部近傍に備えた円環金具２３に設置し、収縮させた状態の伸縮管２が、ジャッキ架台１３の下面近傍に貯留される構成としてもよい。この場合には常時、伸縮管２の上端部近傍に備えた円環金具２３と、ジャッキ架台１３に備えた緊結用支持具１８とを、図２で示すように緊結具１９で緊結しておく。 For example, in the present embodiment, the cable hook 52 is installed on the annular metal fitting 23 provided near the upper end of the telescopic tube 2, and the telescopic tube 2 in a contracted state is shown in FIG. 6B. In addition, although it is configured to be stored near the roof 12, it is not necessarily limited to this. For example, the cable hook 52 may be installed on an annular metal fitting 23 provided near the lower end of the telescopic tube 2, and the telescopic tube 2 in a contracted state may be stored near the lower surface of the jack base 13. In this case, the annular metal fitting 23 provided near the upper end of the telescopic tube 2 and the tightening support 18 provided on the jack base 13 are always tightly fastened by the fastener 19 as shown in FIG. .
また、本実施の形態では、伸縮管２を筒部３と芯材４とにより構成したが、必ずしもこれに限定するものではなく、筒部３に、断面形状を保形できるとともに長さ方向に伸縮可能な材料を採用した場合には、芯材４を用いなくてもよい。 Further, in the present embodiment, the telescopic tube 2 is constituted by the cylindrical portion 3 and the core material 4, but the present invention is not necessarily limited to this. When a stretchable material is used, the core 4 need not be used.
さらに、伸縮管２は、例えば施工現場の周辺環境への景観を配慮した色彩を持たせてもよいし、吊材１５の位置が明確にわかるような警告色を採用してもよい。 Further, the telescopic tube 2 may have a color in consideration of, for example, a landscape to the surrounding environment of the construction site, or may employ a warning color that allows the position of the hanging material 15 to be clearly understood.
また、本実施の形態では、１体の伸縮装置５により伸縮管２を伸縮させたが、必ずしもこれに限定するものではなく、例えば伸縮管２の断面における直径方向に２体配置してもよい。こうすると、伸縮管２を伸縮させる際に吊材１５に伸縮管２が接触することを防止できる。 Further, in the present embodiment, the telescopic tube 2 is expanded and contracted by one telescopic device 5, but the present invention is not necessarily limited to this. For example, two telescopic tubes 2 may be arranged in a diametrical direction in a cross section of the telescopic tube 2. . This can prevent the telescopic tube 2 from contacting the hanging material 15 when the telescopic tube 2 is expanded and contracted.
１ 飛散防止装置
２ 伸縮管
２１ 挿入口
２２ 受入口
２３ 円環金具
３ 筒部
４ 芯材
５ 伸縮装置
５１ ケーブル
５２ ケーブルフック
６ 緊結治具
１０ 建築物
１１ 外側躯体
１２ 屋根
１３ ジャッキ架台
１４ センターホールジャッキ
１５ 吊材
１６ 連結具
１７ 支保工
１８ 緊結用支持具
１９ 緊結具
REFERENCE SIGNS LIST 1 shatterproof device 2 telescopic tube 21 insertion port 22 receiving port 23 annular metal fitting 3 cylindrical part 4 core material 5 telescopic device 51 cable 52 cable hook 6 binding jig
DESCRIPTION OF SYMBOLS 10 Building 11 Outer frame 12 Roof 13 Jack stand 14 Center hole jack 15 Suspension material 16 Connecting tool 17 Supporting work 18 Tightening support tool 19 Tightening tool
Claims (2)
前記吊材を被覆する筒状の伸縮管と、
該伸縮管を前記吊材に沿って伸長及び収縮させる伸縮装置と、を備えることを特徴とする飛散防止装置。 A scattering prevention device for preventing scattering of water droplets and powder attached to a lifting material for lifting a lifting object,
A tubular telescopic tube covering the hanging material,
And a telescopic device for extending and contracting the telescopic tube along the hanging material.
前記伸縮管を貫通させた前記吊材で、前記建築物の一部分を吊持し、
吊り上げ動作の停止期間中は、前記伸縮装置を介して前記伸縮管を伸長させ、前記吊材の露出部分を被覆し、
吊り上げ動作の開始時に、前記伸縮装置を介して前記伸縮管を収縮させ、前記吊材を露出させることを特徴とするリフトアップ工法。 A lift-up method using the shatterproofing device according to claim 1, wherein a part of the building to be constructed is lifted after the ground is laid,
A part of the building is hung by the hanging material penetrating the telescopic tube,
During the suspension period of the lifting operation, extend the telescopic tube through the telescopic device, cover the exposed portion of the hanging material,
A lift-up method, wherein at the start of a lifting operation, the telescopic tube is contracted via the telescopic device to expose the hanging material.
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Citations (6)
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|---|---|---|---|---|
| JPH1088808A (en) * | 1996-09-12 | 1998-04-07 | Shuji Takase | Jack device of heavy weight building or the like and lifting device |
| JP2010006614A (en) * | 2009-10-15 | 2010-01-14 | Kazuto Yamamoto | Asbestos treating method and device therefor |
| JP3163874U (en) * | 2010-08-24 | 2010-11-04 | 菱建基礎株式会社 | Earth and sand drilling equipment |
| JP2011132768A (en) * | 2009-12-25 | 2011-07-07 | Toru Kanzaki | Device for preventing scattering of sludge discharge |
| JP2015113609A (en) * | 2013-12-10 | 2015-06-22 | 株式会社Ihi | Construction method and intermediate structure for dome-shaped roof |
| JP2018003327A (en) * | 2016-06-28 | 2018-01-11 | 株式会社 林物産発明研究所 | Building foundation |
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2018
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1088808A (en) * | 1996-09-12 | 1998-04-07 | Shuji Takase | Jack device of heavy weight building or the like and lifting device |
| JP2010006614A (en) * | 2009-10-15 | 2010-01-14 | Kazuto Yamamoto | Asbestos treating method and device therefor |
| JP2011132768A (en) * | 2009-12-25 | 2011-07-07 | Toru Kanzaki | Device for preventing scattering of sludge discharge |
| JP3163874U (en) * | 2010-08-24 | 2010-11-04 | 菱建基礎株式会社 | Earth and sand drilling equipment |
| JP2015113609A (en) * | 2013-12-10 | 2015-06-22 | 株式会社Ihi | Construction method and intermediate structure for dome-shaped roof |
| JP2018003327A (en) * | 2016-06-28 | 2018-01-11 | 株式会社 林物産発明研究所 | Building foundation |
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