JPH0544331A - Expansion joint member - Google Patents
Expansion joint memberInfo
- Publication number
- JPH0544331A JPH0544331A JP22239991A JP22239991A JPH0544331A JP H0544331 A JPH0544331 A JP H0544331A JP 22239991 A JP22239991 A JP 22239991A JP 22239991 A JP22239991 A JP 22239991A JP H0544331 A JPH0544331 A JP H0544331A
- Authority
- JP
- Japan
- Prior art keywords
- plate
- joint member
- synthetic resin
- main body
- cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 20
- 239000000057 synthetic resin Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000006260 foam Substances 0.000 claims abstract description 6
- 239000002344 surface layer Substances 0.000 abstract description 10
- 230000006378 damage Effects 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 230000008602 contraction Effects 0.000 description 10
- 230000035882 stress Effects 0.000 description 9
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 241001570513 Potamogeton diversifolius Species 0.000 description 2
- 238000012669 compression test Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000006903 response to temperature Effects 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Landscapes
- Floor Finish (AREA)
Abstract
(57)【要約】
【目的】 コンクリート版の表面層での鱗片状欠損、伸
縮目地部材の破壊、伸縮目地部材とコンクリート版との
隙間の発生や拡大、伸縮目地部材の脱けを防止すること
である。
【構成】 本体１が合成樹脂発泡体からなる。本体１の
相対向する側面1aに、板状支持体２がそれぞれ固定され
る。硬質合成樹脂からなる係止具６が、各板状支持体２
に対してそれぞれ固定される。軟質合成樹脂によって形
成された板状覆い４が、一対の板状支持体２の上端部2c
に対して固定される。硬質材料からなるシート５が、板
状覆い４の内部に埋設されている。
(57) [Abstract] [Purpose] To prevent the scale-like defects in the surface layer of concrete slabs, the destruction of stretch joint members, the generation and expansion of gaps between stretch joint members and concrete plates, and the removal of stretch joint members. Is. [Structure] The main body 1 is made of synthetic resin foam. The plate-shaped supports 2 are fixed to the opposite side surfaces 1a of the main body 1, respectively. The locking tool 6 made of hard synthetic resin is used for each plate-shaped support 2
Fixed against each. The plate-like cover 4 formed of the soft synthetic resin is the upper end portion 2c of the pair of plate-like supports 2.
Fixed against. A sheet 5 made of a hard material is embedded inside the plate-shaped cover 4.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、隣り合ったコンクリー
ト版間に配設される伸縮目地部材に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stretch joint member arranged between adjacent concrete slabs.
【０００２】[0002]
【従来の技術】コンクリート版は、温度変化等に応じて
伸縮するので、コンクリート版の目地には、隣り合った
コンクリート版の挙動に追従して伸縮するような伸縮目
地部材を配設する必要がある。こうした部材は、取り付
けが簡単で、仕上がりが美しいものでなければならな
い。2. Description of the Related Art Since a concrete slab expands and contracts in response to temperature changes and the like, it is necessary to dispose an expandable joint member that expands and contracts according to the behavior of adjacent concrete slabs at the joints of the concrete slabs. is there. These components should be easy to install and have a beautiful finish.
【０００３】従来、この種の伸縮目地部材としては、直
方体形状の合成樹脂発泡体からなる本体と、この本体の
表面及び側面を覆った硬質合成樹脂製の枠からなるもの
が知られている。Conventionally, as this type of expandable joint member, there is known one having a main body made of a rectangular parallelepiped synthetic resin foam and a frame made of a hard synthetic resin covering the surface and the side surface of the main body.
【０００４】[0004]
【発明が解決しようとする課題】しかし、こうした目地
部材をコンクリート版間に施工すると、コンクリート版
が温度変化に応じて伸縮するのにつれて、目地部材から
コンクリート版の方へと圧縮応力がかかる。特に、コン
クリート版の表面層はこうした圧縮応力に弱く、このた
めコンクリート版の表面層が鱗片状に欠損したり、また
伸縮目地部材自体が圧縮応力によって破壊するという問
題があった。However, when such a joint member is applied between concrete slabs, a compressive stress is applied from the joint member to the concrete slab as the concrete slab expands and contracts in response to temperature changes. In particular, the surface layer of the concrete slab is vulnerable to such compressive stress, so that there has been a problem that the surface layer of the concrete slab is broken into scales and the expansion joint member itself is destroyed by the compressive stress.
【０００５】また、伸縮目地部材を長期間使用すると、
コンクリート版が膨張と収縮とを数多く繰り返すことか
ら、伸縮目地部材のうち、特に硬質合成樹脂からなる枠
が変形する。このため、伸縮目地部材とコンクリート版
との間に隙間が開いたり、更には目地部材がコンクリー
ト版の間から飛び出していた。本発明の課題は、コンク
リート版の表面層の欠損、伸縮目地部材の破壊、伸縮目
地部材とコンクリート版との隙間の発生や拡大を防止す
ることである。When the stretch joint member is used for a long period of time,
Since the concrete slab repeats expansion and contraction a large number of times, the frame made of a hard synthetic resin is deformed among the elastic joint members. For this reason, a gap is opened between the expansion joint member and the concrete slab, or the joint member protrudes from between the concrete slabs. An object of the present invention is to prevent the surface layer of a concrete slab from being damaged, the expansion joint member to be broken, and the gap between the expansion joint member and the concrete plate from being generated or enlarged.
【０００６】[0006]
【課題を解決するための手段】本発明は、隣り合ったコ
ンクリート版間に配設される伸縮目地部材であって、合
成樹脂発泡体によって形成された本体；前記本体の相対
向する側面にそれぞれ固定された板状支持体であって、
硬質合成樹脂から形成された一対の板状支持体；この板
状支持体に対してそれぞれ固定された係止具であって、
硬質合成樹脂から形成された一対の係止具；軟質合成樹
脂によって形成された板状覆いであって、一方の板状支
持体の上端部と他方の板状支持体の上端部とに対して固
定された板状覆い；及びこの板状覆いの内部に埋設され
た硬質材料からなるシートを備え、前記板状覆いと前記
本体との間に緩衝用空間が設けられている伸縮目地部材
に係るものである。SUMMARY OF THE INVENTION The present invention is a stretch joint member disposed between adjacent concrete slabs, wherein the main body is made of synthetic resin foam, and the side surfaces of the main body are opposed to each other. A fixed plate-shaped support,
A pair of plate-like supports formed of hard synthetic resin; locking members fixed to the plate-like supports respectively,
A pair of locking members made of hard synthetic resin; plate-like covers made of soft synthetic resin, for the upper end of one plate-like support and the upper end of the other plate-like support A fixed plate-shaped cover; and an expandable joint member including a sheet made of a hard material embedded in the plate-shaped cover, wherein a cushioning space is provided between the plate-shaped cover and the main body. It is a thing.
【０００７】[0007]
【実施例】図１は、本発明の実施例に係る伸縮目地部材
を示す破断斜視図、図２は同じく断面図、図３はこの伸
縮目地部材を試験する際にコンクリート版７間に取り付
けた状態を示す断面図である。FIG. 1 is a cutaway perspective view showing an expansion joint member according to an embodiment of the present invention, FIG. 2 is a sectional view showing the same, and FIG. 3 is attached between concrete plates 7 when testing the expansion joint member. It is sectional drawing which shows a state.
【０００８】細長い直方体状の本体１は合成樹脂発泡体
からなる。本体１の一対の側面1aの上半部に、それぞれ
板状支持体２が装着、固定される。各板状支持体２は硬
質合成樹脂からなる。板状支持体２の下端には、平板状
の係止部2bが設けられ、板状支持体２の内側壁面には、
本体１の上端面1bと平行に延びる細長い支持部2aが形成
される。板状支持体２の上端には、幅の広い上端部2cが
形成され、上端部2cの上端面は、伸縮目地部材の外周か
ら中心方向へと向かって若干下降する傾斜面をなしてい
る。The elongated rectangular parallelepiped main body 1 is made of synthetic resin foam. The plate-shaped support bodies 2 are attached and fixed to the upper half portions of the pair of side surfaces 1a of the main body 1, respectively. Each plate-shaped support 2 is made of a hard synthetic resin. A flat plate-shaped locking portion 2b is provided at the lower end of the plate-shaped support 2, and the inner wall surface of the plate-shaped support 2 is
An elongated support portion 2a extending parallel to the upper end surface 1b of the body 1 is formed. A wide upper end portion 2c is formed at the upper end of the plate-like support 2, and the upper end surface of the upper end portion 2c is an inclined surface that slightly descends from the outer periphery of the expandable joint member toward the center.
【０００９】各板状支持部２は、それぞれ側面1aに接合
され、支持部2aが上端部1bに係止される。各上端部2cの
上端面には、板状覆い４が固定され、これにより、一対
の支持体２と板状覆い４とが一体化される。板状覆い４
の内部には、硬質材料からなるシート５が埋設される。
また、板状覆い４と本体１の上端面1bとの間には、略直
方体形状の緩衝用空間３が形成される。Each plate-shaped support portion 2 is joined to the side surface 1a, and the support portion 2a is locked to the upper end portion 1b. A plate-shaped cover 4 is fixed to the upper end surface of each upper end portion 2c, whereby the pair of support bodies 2 and the plate-shaped cover 4 are integrated. Plate cover 4
A sheet 5 made of a hard material is embedded inside the sheet.
Further, between the plate-shaped cover 4 and the upper end surface 1b of the main body 1, a buffer space 3 having a substantially rectangular parallelepiped shape is formed.
【００１０】一対の係止具６は、共に合成樹脂から形成
されている。本体6bの一端には、板状の係止部6aが本体
6bと平行に形成され、本体6bの他端には、アンカー6cが
斜め上方へと向かって突出している。板状支持体２の本
体と係止部2bとの間に係止部6aが挿入、嵌合され、係止
部6aと本体6bとの間に板状支持体２の係止部2bが挿入、
嵌合される。The pair of locking members 6 are both made of synthetic resin. At one end of the main body 6b, a plate-shaped locking portion 6a is provided.
The anchor 6c is formed in parallel with the body 6b, and the anchor 6c projects obliquely upward at the other end of the body 6b. The locking portion 6a is inserted and fitted between the main body of the plate-shaped support 2 and the locking portion 2b, and the locking portion 2b of the plate-shaped support 2 is inserted between the locking portion 6a and the main body 6b. ,
Mated.
【００１１】板状支持体２及び係止具６は、硬質塩化ビ
ニル樹脂、ABS 樹脂、ポリプロピレン、ナイロン、ポリ
エステル樹脂等を単独若しくは併用して形成することが
好ましい。板状覆い４は、軟質塩化ビニル樹脂、エチレ
ン酢酸ビニル共重合体、軟質ゴム等を単独若しくは併用
して形成することが好ましい。シート５としては、金属
箔又はシート状の合成繊維が好ましい。こうした金属箔
の材質としては、アルミニウム、ステンレス、チタン等
がある。シート状の合成繊維の材質としては、ガラス織
布、ポリエステル織布等がある。It is preferable that the plate-shaped support 2 and the locking member 6 are formed of hard vinyl chloride resin, ABS resin, polypropylene, nylon, polyester resin or the like alone or in combination. The plate-like cover 4 is preferably formed of a soft vinyl chloride resin, an ethylene vinyl acetate copolymer, a soft rubber or the like alone or in combination. As the sheet 5, a metal foil or a sheet-shaped synthetic fiber is preferable. Materials for such metal foils include aluminum, stainless steel, titanium and the like. Examples of the material of the sheet-shaped synthetic fiber include glass woven cloth and polyester woven cloth.
【００１２】本実施例に係る伸縮目地部材においては、
軟質の板状覆い４によって一対の板状支持体２の上端を
連結する構造を採用し、しかも板状覆い４の下側に緩衝
用空間３を設けている。このため、温度変化によってコ
ンクリート版が伸縮してもコンクリート版の挙動に応じ
て伸縮目地部材の上端部が変形し易い。従って、コンク
リート版の表面層に過大な応力がかからないので、コン
クリート版の表面層に鱗片状の破壊が生じない。また、
同様の理由により、伸縮目地部材の破壊も防止すること
ができる。In the expansion joint member according to this embodiment,
A structure in which the upper ends of the pair of plate-shaped supports 2 are connected by a soft plate-shaped cover 4 is adopted, and a buffer space 3 is provided below the plate-shaped cover 4. Therefore, even if the concrete slab expands and contracts due to temperature change, the upper end portion of the expansion joint member is easily deformed according to the behavior of the concrete slab. Therefore, no excessive stress is applied to the surface layer of the concrete slab, so that scale-like destruction does not occur in the surface layer of the concrete slab. Also,
For the same reason, it is possible to prevent the expansion joint member from being broken.
【００１３】また、板状覆い４の内部に、硬質材料から
なるシート５を埋設しているので、伸縮目地部材の上
部、特に板状覆い４の熱経時寸法安定性が良好であり、
長期間使用しても伸縮目地部材が型くずれしない。従っ
て、長期間使用しても、伸縮目地部材とコンクリート版
との間や、隣接する伸縮目地部材の間に、見苦しい隙間
が生ぜず、床の美観を保つことができる。Further, since the sheet 5 made of a hard material is embedded inside the plate-like cover 4, the dimensional stability with heat of the upper part of the elastic joint member, particularly the plate-like cover 4, is good,
The stretch joint member does not lose its shape even after long-term use. Therefore, even if it is used for a long period of time, an unsightly gap does not occur between the expansion joint member and the concrete slab or between the adjacent expansion joint members, and the aesthetic appearance of the floor can be maintained.
【００１４】更に、係止具６が板状支持体２に固定され
ているので、一対の係止具６が、それぞれコンクリート
版中に埋設され、固定される。こうした係止具６が伸縮
目地部材のアンカーとして働くため、伸縮目地部材がコ
ンクリート版の間から飛び出すことはない。Further, since the locking tools 6 are fixed to the plate-like support 2, the pair of locking tools 6 are embedded and fixed in the concrete slab. Since the locking tool 6 acts as an anchor for the expansion joint member, the expansion joint member does not jump out from between the concrete slabs.
【００１５】次に、伸縮目地部材の好ましい施工手順に
ついて述べる。まず伸縮目地部材を設置すべき場所に、
所定の高さで水糸を張る。そして、伸縮目地部材を、水
糸に従って設置していく。そして、まず、板状支持体２
の下端の高さまで、セメントモルタルの土堤を形成し、
伸縮目地部材を強固に固定する。この土堤の上に生コン
クリートを打設し、養生する。次いで、板状覆い４の表
面に貼り付けられていた保護テープを剥がす。Next, a preferred procedure for constructing the expansion joint member will be described. First, at the place where the expansion joint member should be installed,
Tension the water thread at the specified height. Then, the elastic joint member is installed according to the water thread. Then, first, the plate-shaped support 2
Form a cement mortar embankment up to the height of the bottom edge of
Firmly fix the expansion joint member. Placing ready-mixed concrete on this embankment and curing it. Next, the protective tape attached to the surface of the plate-shaped cover 4 is peeled off.
【００１６】以下、各種の伸縮目地部材について、伸縮
繰り返し試験と圧縮試験とを行った結果について述べ
る。上記のようにして、図１，２に示した伸縮目地部材
を、コンクリート版７間に設置した（図３参照）。そし
て、一対のコンクリート版７を接着剤によって試験治具
８にそれぞれ貼り付け、硬化させた。The results of the repeated expansion and contraction test and the compression test of various expandable joint members will be described below. As described above, the expandable joint member shown in FIGS. 1 and 2 was installed between the concrete plates 7 (see FIG. 3). Then, the pair of concrete plates 7 were respectively attached to the test jig 8 with an adhesive and cured.
【００１７】この一方、図４〜図６に示す各伸縮目地部
材を比較例として準備した。図４の伸縮目地部材におい
ては、合成樹脂発泡体からなる本体１の上部を覆うよう
に、枠12が接合されている。この枠12は、表面部12c 、
側板部12a 及びこれらを連結する連結部12b からなる。
枠12は、硬質塩化ビニルによって形成した。また、連結
部12b 及び表面部12c の幅を本体１よりも若干大きくし
て若干の空隙を形成した。On the other hand, the expandable joint members shown in FIGS. 4 to 6 were prepared as comparative examples. In the expandable joint member of FIG. 4, a frame 12 is joined so as to cover the upper part of the main body 1 made of synthetic resin foam. This frame 12 has a surface portion 12c,
It is composed of a side plate portion 12a and a connecting portion 12b for connecting these.
The frame 12 was made of hard vinyl chloride. Further, the width of the connecting portion 12b and the surface portion 12c is made slightly larger than that of the main body 1 to form a slight gap.
【００１８】図５の伸縮目地部材においては、本体１の
上部を覆うように、枠22を接合する。枠22は、表面部22
b と側板部22a とからなる。表面部22b は上端面1bに接
合され、側板部22a は側面1aに接合されている。この枠
22を形成する材質は、比較的小さい圧縮応力を有する反
面、脆い材質とした。In the expandable joint member of FIG. 5, the frame 22 is joined so as to cover the upper portion of the main body 1. The frame 22 has a front surface portion 22.
It consists of b and side plate 22a. The surface portion 22b is joined to the upper end surface 1b, and the side plate portion 22a is joined to the side surface 1a. This frame
The material forming 22 was a brittle material while having a relatively small compressive stress.
【００１９】図６に示す伸縮目地部材においては、本体
１の上部が枠32によって覆われる。この枠32は、側面1a
に接合された側板部32aと、両端が少し吊り上がった表
面部32b とからなる。この枠32は、硬質塩化ビニル樹脂
によって形成した。In the expandable joint member shown in FIG. 6, the upper portion of the main body 1 is covered with the frame 32. This frame 32 has a side surface 1a
It is composed of a side plate portion 32a joined to the above and a surface portion 32b whose both ends are slightly lifted. The frame 32 was made of hard vinyl chloride resin.
【００２０】これら各伸縮目地部材についても、図３に
示すようにしてコンクリート版間に埋設し、試験した。 伸縮繰り返し試験：一対のコンクリート版７を10mm／分
の速度で変位させ、各伸縮目地部材を伸縮させた。この
伸縮の大きさは、目地幅に対して±５％、±10％、±20
％とした。伸縮の回数は1000回とした。Each of the elastic joint members was also embedded and tested between concrete slabs as shown in FIG. Repeated expansion and contraction test: A pair of concrete plates 7 were displaced at a speed of 10 mm / min to expand and contract each expansion joint member. The size of this expansion and contraction is ± 5%, ± 10%, ± 20 of the joint width.
%. The number of times of expansion and contraction was 1000 times.
【００２１】この結果、上記した本発明例の部材におい
ては、コンクリートの欠落等の問題は生じなかった。こ
れに対し、図４の例では、伸縮の大きさが５％の段階
で、目地部材の頭部に接するコンクリート表面層に鱗片
状の欠落が発生した。また、伸縮の大きさが10％の場合
には、図４〜図６に示すいずれの目地部材においても、
目地部材の頭部に接するコンクリート表面層に鱗片状の
欠落が発生すると共に、図４，図５の目地部材の頭部に
小幅の亀裂が発生した。更に、伸縮の大きさが20％の場
合には、図４〜図６に示すいずれの目地部材において
も、目地部材の頭部に亀裂が発生した。As a result, the above-mentioned member of the present invention did not have a problem such as concrete loss. On the other hand, in the example of FIG. 4, scale-like deficiency occurred in the concrete surface layer in contact with the head of the joint member when the expansion and contraction was 5%. In addition, when the expansion and contraction is 10%, in any joint member shown in FIGS. 4 to 6,
Scale-like defects were generated in the concrete surface layer in contact with the head of the joint member, and small cracks were generated in the head of the joint member in FIGS. 4 and 5. Further, when the amount of expansion and contraction was 20%, a crack was generated in the head of the joint member in any of the joint members shown in FIGS.
【００２２】圧縮試験：圧縮速度10mm／分、圧縮距離
１，２，３mmで各伸縮目地部材を圧縮し、各伸縮目地部
材にかかる圧縮応力を測定した。この結果を表１に示
す。Compression test: Each expansion joint member was compressed at a compression speed of 10 mm / min and a compression distance of 1, 2 and 3 mm, and the compressive stress applied to each expansion joint member was measured. The results are shown in Table 1.
【００２３】 [0023]
【００２４】特に、図４に示す目地部材は、枠12の表面
部分の肉厚が比較的大きく、初期剛性が高かった。この
ため、３mm圧縮すると、目地部材の頭部に割れが発生し
た。図５に示す目地部材では、枠22の肉厚が小さいこと
や柔軟な材質であることから、圧縮応力は比較的小さ
い。しかし、伸縮繰り返し試験では、目地部材の頭部に
割れが発生していることから、脆い材質からなってい
る。図６に示す目地部材では、枠32の頭部形状がＭ字状
になっていることから、横方向の圧縮に対しては形状面
からみて比較的追従し易い。しかし、枠32がやはり硬質
塩化ビニルからなっているので、本発明例のものにくら
べると圧縮応力が約２〜３倍大きい。以上のように、本
発明に係る伸縮目地部材によれば、有効な緩衝性が得ら
れた。In particular, in the joint member shown in FIG. 4, the surface portion of the frame 12 has a relatively large wall thickness and a high initial rigidity. Therefore, when compressed by 3 mm, the head of the joint member cracked. In the joint member shown in FIG. 5, since the frame 22 has a small wall thickness and is made of a flexible material, the compressive stress is relatively small. However, in the repeated expansion / contraction test, the joint member is made of a brittle material because the head portion of the joint member is cracked. In the joint member shown in FIG. 6, since the head shape of the frame 32 is M-shaped, it is relatively easy to follow the lateral compression in view of the shape. However, since the frame 32 is also made of hard vinyl chloride, the compressive stress is about 2-3 times larger than that of the example of the present invention. As described above, according to the stretchable joint member of the present invention, effective cushioning property is obtained.
【００２５】[0025]
【発明の効果】本発明に係る伸縮目地部材によれば、軟
質合成樹脂によって形成された板状覆いで一対の板状支
持体の上端部を連結し、かつ板状覆いと本体との間に緩
衝用空間を設けている。このため、温度変化によってコ
ンクリート版が伸縮しても、コンクリート版の挙動に応
じて伸縮目地部材の上端部が変形し易い。従って、コン
クリート版の表面層に過大な応力がかからないので、コ
ンクリート版の表面層に鱗片状の破壊が生じない。ま
た、同様の理由により、伸縮目地部材の破壊も防止する
ことができる。According to the expansion joint member of the present invention, the upper ends of the pair of plate-like supports are connected by the plate-like cover formed of the soft synthetic resin, and the plate-like cover and the main body are connected to each other. A buffer space is provided. For this reason, even if the concrete slab expands and contracts due to temperature change, the upper end portion of the expandable joint member is easily deformed according to the behavior of the concrete slab. Therefore, no excessive stress is applied to the surface layer of the concrete slab, so that scale-like destruction does not occur in the surface layer of the concrete slab. Further, for the same reason, it is possible to prevent the expansion and contraction joint member from being broken.
【００２６】また、板状覆いの内部に、硬質材料からな
るシートを埋設しているので、伸縮目地部材の上部、特
に板状覆いの熱経時寸法安定性が良好であり、長期間使
用しても伸縮目地部材が型くずれしない。従って、長期
間使用しても、伸縮目地部材とコンクリート版との間
や、隣接する伸縮目地部材の間に、見苦しい隙間が生じ
ず、床の美観を保つことができる。Further, since the sheet made of a hard material is embedded inside the plate-like cover, the dimensional stability of the upper part of the elastic joint member, particularly the plate-like cover, with heat aging is good, and the sheet is used for a long time. Also, the stretch joint member does not lose its shape. Therefore, even if it is used for a long period of time, an unsightly gap does not occur between the expansion joint member and the concrete slab or between the adjacent expansion joint members, and the aesthetic appearance of the floor can be maintained.
【００２７】更に、硬質合成樹脂からなる係止具が一対
の板状支持体に対してそれぞれ固定されているので、一
対の係止具が、それぞれコンクリート版中に埋設され、
固定される。こうした係止具が伸縮目地部材のアンカー
として働くため、伸縮目地部材がコンクリート版の間か
ら飛び出すことはない。Further, since the fasteners made of hard synthetic resin are fixed to the pair of plate-like supports respectively, the pair of fasteners are respectively embedded in the concrete slab,
Fixed. Since such a locking tool acts as an anchor for the expansion joint member, the expansion joint member does not jump out from between the concrete slabs.
【図１】本発明の実施例に係る伸縮目地部材を示す破断
斜視図である。FIG. 1 is a cutaway perspective view showing an expandable joint member according to an embodiment of the present invention.
【図２】図１の伸縮目地部材を示す断面図である。FIG. 2 is a cross-sectional view showing the expandable joint member of FIG.
【図３】図１の伸縮目地部材をコンクリート版７間に施
工して治具に取り付けた状態を示す断面図である。FIG. 3 is a cross-sectional view showing a state in which the expandable joint member of FIG. 1 is installed between concrete plates 7 and attached to a jig.
【図４】対照例の伸縮目地部材を示す断面図である。FIG. 4 is a cross-sectional view showing a stretch joint member of a comparative example.
【図５】対照例の伸縮目地部材を示す断面図である。FIG. 5 is a cross-sectional view showing a stretchable joint member of a comparative example.
【図６】対照例の伸縮目地部材を示す断面図である。FIG. 6 is a cross-sectional view showing a stretch joint member of a comparative example.
１ 本体 ２ 板状支持体 2b 係止部 2c 上端部 ３ 緩衝用空間 ４ 板状覆い ５ 硬質材料からなるシート ６ 係止具 6a 係止部 6b 本体 6c アンカー 1 main body 2 plate-like support 2b locking part 2c upper end 3 buffer space 4 plate-like cover 5 sheet made of hard material 6 locking tool 6a locking part 6b main body 6c anchor
Claims (1)
る伸縮目地部材であって、 合成樹脂発泡体によって形成された本体；前記本体の相
対向する側面にそれぞれ固定された板状支持体であっ
て、硬質合成樹脂から形成された一対の板状支持体；こ
の板状支持体に対してそれぞれ固定された係止具であっ
て、硬質合成樹脂から形成された一対の係止具；軟質合
成樹脂によって形成された板状覆いであって、一方の板
状支持体の上端部と他方の板状支持体の上端部とに対し
て固定された板状覆い；及びこの板状覆いの内部に埋設
された硬質材料からなるシートを備え、 前記板状覆いと前記本体との間に緩衝用空間が設けられ
ている伸縮目地部材。1. An expandable joint member disposed between adjacent concrete slabs, a main body formed of synthetic resin foam; plate-like supports fixed to opposite side surfaces of the main body, respectively. And a pair of plate-shaped supports made of hard synthetic resin; a pair of locking members fixed to the plate-shaped supports, the pair of locking members made of hard synthetic resin; A plate-like cover formed of a synthetic resin, the plate-like cover being fixed to the upper end of one plate-like support and the upper end of the other plate-like support; and the inside of the plate-like cover An expandable joint member having a sheet made of a hard material embedded therein, wherein a cushioning space is provided between the plate-shaped cover and the main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22239991A JPH0544331A (en) | 1991-08-08 | 1991-08-08 | Expansion joint member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22239991A JPH0544331A (en) | 1991-08-08 | 1991-08-08 | Expansion joint member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0544331A true JPH0544331A (en) | 1993-02-23 |
Family
ID=16781768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22239991A Pending JPH0544331A (en) | 1991-08-08 | 1991-08-08 | Expansion joint member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0544331A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62101754A (en) * | 1985-10-29 | 1987-05-12 | 館野 晃吉 | Extensible joint material for tile finish part |
-
1991
- 1991-08-08 JP JP22239991A patent/JPH0544331A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62101754A (en) * | 1985-10-29 | 1987-05-12 | 館野 晃吉 | Extensible joint material for tile finish part |
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