KR200275110Y1 - Cuvert - Google Patents
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- KR200275110Y1 KR200275110Y1 KR2019990008514U KR19990008514U KR200275110Y1 KR 200275110 Y1 KR200275110 Y1 KR 200275110Y1 KR 2019990008514 U KR2019990008514 U KR 2019990008514U KR 19990008514 U KR19990008514 U KR 19990008514U KR 200275110 Y1 KR200275110 Y1 KR 200275110Y1
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Abstract
본 고안은, 저부평탄부와 상기 저부평탄부의 양측연부로부터 상향연장된 두개 이상의 상향측벽부를 갖는 저판부재와, 상부평탄부와 상기 상부평탄부의 양측연부로부터 하향연장되어 상기 상향측벽부와 상호 맞대기 결합하여 내부에 관상의 공동구를 형성하도록 두 개이상의 하향측벽부를 갖는 상판부재를 포함하는 암거용 암거유니트에 관한 것으로서, 상기 상향측벽부의 두께방향으로 확장된 상향보강리브와, 상기 하향측벽부의 두께방향으로 확장된 하향보강리브를 갖는 보강리브와; 상기 보강리브에 형성되어 상기 상향측벽부와 상기 하향측벽부를 상호 요철맞물림결합시키는 요철맞물림결합부를 포함하는 것을 특징으로 한다. 이에 의하여, 상판부재와 저판부재의 결합부위의 접촉면적을 증대시켜 상호 결합 상태를 보다 견고하게 유지시킬 수 있으며, 상판부재 및 저판부재의 결합부위의 안전성을 보다 향상시킬 수 있다.The present invention has a bottom plate member having two or more upward side wall portions extended upwardly from both side edges of the bottom flat portion and the bottom flat portion, and extended downward from both side edges of the upper flat portion and the upper flat portion to butt against the upward side wall portion. A culvert unit for culverts comprising a top plate member having two or more downward side wall portions to be coupled to form a tubular cavity therein, the reinforcing rib extending in the thickness direction of the upward side wall portion, and the thickness direction of the downward side wall portion. A reinforcing rib having a downward reinforcing rib extended to; It is formed on the reinforcing ribs, characterized in that it comprises a concave-convex engaging portion for engaging the concave-convex engagement with the upward side wall portion and the downward side wall. As a result, the contact area between the coupling portion of the upper plate member and the bottom plate member can be increased to maintain the mutually secured state, and the safety of the coupling portion of the upper plate member and the bottom plate member can be further improved.
Description
본 고안은, 암거용 암거유니트에 관한 것으로, 보다 상세하게는, 저부평탄부와 상기 저부평탄부의 양측연부로부터 상향연장된 두개 이상의 상향측벽부를 갖는 저판부재와, 상부평탄부와 상기 상부평탄부의 양측연부로부터 하향연장되어 상기 상향측벽부와 상호 맞대기 결합하여 내부에 관상의 공동구를 형성하도록 두 개이상의 하향측벽부를 갖는 상판부재를 포함하는 암거용 암거유니트에 관한 것이다.The present invention relates to a culvert unit for culverts, and more particularly, a bottom plate member having two or more upward side wall portions extended upward from both side edge portions of the bottom flat portion and the bottom flat portion, and an upper flat portion and the upper flat portion. It relates to a culvert unit for culverts including a top plate member having two or more downward side wall portions extending downward from both side edges and butt-couple with the upward side wall portion to form a tubular cavity therein.
암거는 우수·오수 및 농공업용수 등의 수로를 형성하거나, 인도 및 차도 등의 통행로를 만드는데 사용되는 한편, 전기통신 및 온·냉관로 등의 매설을 위한 지하공동구의 제작 및 농수산물의 저장창고 등의 제작 등에 다양하게 사용되고 있다.Culverts are used to form waterways of stormwater, sewage and agricultural industry, or to create passageways such as sidewalks and driveways, while underground underground areas for laying telecommunications, hot and cold pipelines, and storage of agricultural and marine products. It is widely used for production.
최근에는 특히, 암거를 설치하는데 공기를 단축하고 경제적으로 시공하기 위하여 암거의 각 부분을 분할제작하고 공사현장에서는 이를 조립하여 설치하는 조립식 암거가 사용되고 있다. 이러한 종래의 암거유니트는 도 6 및 도 7에 도시된 바와 같이, 종래의 암거용 암거유니트는 저판부재(110)와, 저판부재(110)의 상부에 결합되어 공동구(120)를 형성하는 상판부재(130)를 갖는다.Recently, prefabricated culverts have been used in which each part of the culvert is manufactured and assembled at the construction site in order to shorten the air and install the culvert in economical manner. As shown in FIGS. 6 and 7, the conventional culvert unit is a top plate member that is coupled to the bottom plate member 110 and the bottom plate member 110 to form a cavity 120. Has 130.
저판부재(110)에는 평탄한 저부평탄부(111)와, 저부평탄부(111)의 양측연부로부터 상향 연장되어 암거의 측벽을 형성하는 상향측벽부(113)가 형성되어 있으며, 저판부재(110)의 상부에 맞대기 결합되는 상판부재(130)에는 평탄한 상부평탄부(131)와, 상부평탄부(131)의 양측연부로부터 하향 연장되어 암거의 측벽을 형성하는 하향측벽부(133)가 형성되어 있다. 이들 상향측벽부(113)와 하향측벽부(131)의 양단부에는 고정돌기(115)와 돌기수용홈(135)이 형성되어 상호 요철 맞물림결합되어 있다.The bottom plate member 110 is formed with a flat bottom flat portion 111 and an upward side wall portion 113 extending upward from both side edges of the bottom flat portion 111 to form a side wall of the culvert, and the bottom plate member 110 formed therein. The upper plate member 130 which is butt-coupled to an upper portion of the upper plate member 130 is formed with a flat upper flat portion 131 and a downward side wall portion 133 extending downward from both side edges of the upper flat portion 131 to form a side wall of the culvert. . Fixing protrusions 115 and protrusion accommodation grooves 135 are formed at both ends of the upper side wall portion 113 and the lower side wall portion 131, and are interlocked with each other.
그리고, 저판부재(110)에는 후방에 위치하는 저판부재(110)와의 연결결합을 위하여 전방에 형성되는 맞물림수용홈(117)과, 맞물림수용홈(117)과 맞물림결합되어 상호 맞물림 결합되는 맞물림돌기(119)가 저판부재(110)의 후방영역에 형성된다.Then, the bottom plate member 110 is engaged with the engagement receiving groove 117 and the engagement receiving groove 117 formed in the front for the connection coupling with the bottom plate member 110 located in the rear, the interlocking projection is engaged with each other 119 is formed in the rear region of the bottom plate member 110.
그런데, 이러한 종래의 암거용 암거유니트에는 각각의 측벽의 두께는 좁은데, 각 측벽부의 단부에 고정돌기와 돌기수용홈이 형성되어 있어 고정돌기와 돌기수용홈이 형성된 측벽부의 부위가 상대적으로 취약한 구조를 가지고 있다는 문제점이 있다.However, in the conventional culvert culvert unit, the thickness of each sidewall is narrow, and the fixing projections and the projection receiving grooves are formed at the end of each sidewall portion, so that the portions of the sidewall portions where the fixing projections and the projection receiving grooves are formed are relatively fragile. There is a problem.
또한, 측벽부가 다른 부분에 비하여 상대적으로 취약한 구조로 되어 있어 지반의 침하 및 융기가 발생하는 경우 조립부분이 파손되는 등의 문제를 야기시켜 조립결합부분의 지속적 결합을 유지할 수 없게 되는 경우가 발생한다.In addition, the side wall portion has a structure that is relatively weak compared to other parts, causing problems such as breakage of the assembled portion when ground subsidence and uplift occur, which makes it impossible to maintain the continuous coupling of the assembled portion. .
따라서, 본 고안의 목적은, 상판부재와 저판부재의 상호 결합부위의 접촉면적을 증대시켜 상호 결합 상태를 보다 견고하게 유지시킬 수 있으며, 상판부재 및 저판부재의 결합부위의 안전성을 보다 향상시킬 수 있는 암거유니트를 제공하는 것이다.Accordingly, an object of the present invention is to increase the contact area of the mutual coupling portion of the top plate member and the bottom plate member to maintain a more firmly bonded state, and to further improve the safety of the coupling portion of the top plate member and the bottom plate member. To provide a culvert unit.
도 1은 본 고안에 따른 암거유니트의 실시예에 대한 사시도,1 is a perspective view of an embodiment of a culvert unit according to the present invention,
도 2는 도 1의 분해사시도,2 is an exploded perspective view of FIG. 1;
도 3은 도 1의 Ⅱ-Ⅱ선에 따른 확대단면도,3 is an enlarged cross-sectional view taken along line II-II of FIG. 1;
도 4는 본 고안에 따른 다른 실시예의 사시도,4 is a perspective view of another embodiment according to the present invention,
도 5는 도 4의 Ⅴ-Ⅴ선에 따른 단면도,5 is a cross-sectional view taken along the line VV of FIG. 4;
도 6은 종래의 암거유니트의 사시도,6 is a perspective view of a conventional culvert unit,
도 7은 도 6의 Ⅶ-Ⅶ선에 따른 확대단면도이다.7 is an enlarged cross-sectional view taken along the line VII-VII of FIG. 6.
* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings
10 : 저판부재 11 : 저부평탄부10: bottom plate member 11: bottom flat portion
13 : 상향측벽부 30 : 상판부재13: Upward side wall part 30: Upper plate member
31 : 상부평탄부 33 : 하향측벽부31: upper flat portion 33: downward side wall portion
40 : 보강리브 45 : 고정돌기40: reinforcing rib 45: fixing protrusion
47 : 돌기수용홈47: projection receiving groove
상기 목적은, 본 고안에 따라, 저부평탄부와 상기 저부평탄부의 양측연부로부터 상향연장된 두개 이상의 상향측벽부를 갖는 저판부재와, 상부평탄부와 상기 상부평탄부의 양측연부로부터 하향연장되어 상기 상향측벽부와 상호 맞대기 결합하여 내부에 관상의 공동구를 형성하도록 두 개이상의 하향측벽부를 갖는 상판부재를 포함하는 암거용 암거유니트에 있어서, 상기 상향측벽부의 두께방향으로 확장된 상향보강리브와, 상기 하향측벽부의 두께방향으로 확장된 하향보강리브를 갖는 보강리브와; 상기 보강리브에 형성되어 상기 상향측벽부와 상기 하향측벽부를 상호 요철맞물림결합시키는 요철맞물림결합부를 포함하는 것을 특징으로 하는 암거용 유니트에 의해 달성된다.The object is, according to the present invention, a bottom plate member having two or more upward side wall portions extending upwardly from both side edges of the bottom flat portion and the bottom flat portion, and is extended downward from both side edges of the upper flat portion and the upper flat portion, An culvert unit for culverts comprising a top plate member having two or more downward side wall portions to be butt-coupled with the side wall portion to form a tubular cavity therein, the culvert unit including an upward reinforcing rib extended in a thickness direction of the upward side wall portion; A reinforcing rib having a downward reinforcing rib extended in the thickness direction of the side wall portion; Is formed by the reinforcing rib is achieved by the culvert unit, characterized in that it comprises a concave-convex engagement portion for engaging the concave-convex engagement with the upward side wall portion and the downward side wall portion.
이하에서는 첨부도면을 참조하여 본 고안에 대해 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail for the subject innovation.
도 1은 본 고안에 따른 암거유니트의 실시예에 대한 사시도이며, 도 2는 도 1의 분해사시도이고, 도 3은 도 1의 Ⅱ-Ⅱ선에 따른 확대단면도이며, 도 4는 본 고안에 따른 다른 실시예의 사시도이고, 도 5는 도 4의 Ⅴ-Ⅴ선에 따른 단면도이다. 이들 도면에 도시된 바와 같이, 본 고안에 따른 암거용 암거유니트는, 저판부재(10)와, 저판부재(10)의 상부에 상호 맞대기결합되어 중앙에 공동구(20)를 형성하는 상판부재(30)를 갖는다.1 is a perspective view of an embodiment of a culvert unit according to the present invention, Figure 2 is an exploded perspective view of Figure 1, Figure 3 is an enlarged cross-sectional view according to line II-II of Figure 1, Figure 4 is in accordance with the present invention 5 is a perspective view of another embodiment, and FIG. 5 is a cross-sectional view taken along the line VV of FIG. 4. As shown in these drawings, the culvert unit for the culvert according to the present invention, the bottom plate member 10 and the top plate member 30 butt-coupled to each other on the top of the bottom plate member 10 to form a cavity 20 in the center thereof. Has
저판부재(10)에는 평탄한 저부평탄부(11)와, 저부평탄부(11)의 양측연부로부터 상향 연장되어 암거의 측벽을 형성하는 상향측벽부(13)가 형성되어 있으며, 저판부재(10)의 상부에 맞대기 결합되는 상판부재(30)는 평탄한 상부평탄부(31)와, 상부평탄부(31)의 양측연부로부터 하향 연장되어 암거의 측벽을 형성하는 하향측벽부(33)를 갖는다.The bottom plate member 10 is formed with a flat bottom flat portion 11 and an upward side wall portion 13 extending upward from both side edges of the bottom flat portion 11 to form a side wall of the culvert, and the bottom plate member 10 The upper plate member 30 which is butt-coupled to the upper portion has a flat upper flat portion 31 and a downward side wall portion 33 extending downward from both side edges of the upper flat portion 31 to form a side wall of the culvert.
이들 상판부재(30)와 저판부재(10)의 상호 결합에 의하여 형성된 공동구(20)의 둘레에는 공동구(20)로부터 소정 이격되어 공동구(20)를 둘러싸도록 함몰된 그라우팅충전부(15)가 형성되어 있으며, 상판부재(30)에는 그라우팅충전부(15)에 그라우트를 주입할 수 있도록 공동구(20)의 길이방향을 따라 상부평탄부(31)의 단부영역으로부터 하향연장된 그라우팅주입홈(35)이 형성되어 있다. 저부평탄부(11)에는, 그라우팅주입홈(35)으로부터 주입된 그라우트가 그라우팅충전부(15)에 충전됨에 따라 그라우팅충전부(15)에 공기가 그라우트에 밀려 배출되는 도시 않은 공기배출홈이 형성되어 있다.Grouting filling part 15 is formed around the cavity 20 formed by mutual coupling of the upper plate member 30 and the bottom plate member 10 to be spaced apart from the cavity 20 so as to surround the cavity 20. The upper plate member 30 has a grouting injection groove 35 extending downward from an end region of the upper flat portion 31 along the longitudinal direction of the cavity 20 so that grout can be injected into the grouting filling part 15. It is. In the bottom flat portion 11, as the grout injected from the grouting injection groove 35 is filled in the grouting filling part 15, air is not shown in the grouting filling part 15, and the air discharge groove is formed to be discharged by the grout. .
그리고, 저판부재(10)에는 후방에 위치하는 저판부재(10)와의 연결결합을 위하여 전방에 형성되는 맞물림수용홈(17)과, 맞물림수용홈(17)과 맞물림결합되어 상호 맞물림 결합되는 맞물림돌기(19)가 저판부재(10)의 후방영역에 형성된다.Then, the bottom plate member 10 is engaged with the engagement receiving groove 17 formed at the front and the engagement receiving groove 17 to be engaged with the bottom plate member 10 positioned at the rear, and the interlocking projection is engaged with each other. 19 is formed in the rear region of the bottom plate member 10.
한편, 도 2 및 도 3에 도시된 바와 같이, 상향측벽부(13) 및 하향측벽부(33)의 맞대기결합영역은 요철결합되며, 이 맞대기결합영역에는 맞대기결합영역의 두께방향으로 확장된 보강리브(40)가 형성되어 있다. 보강리브(40)는, 상향측벽부(13)의 두께방향으로 확장된 상향보강리브(41)와, 하향측벽부(33)의 두께방향으로 확장된 하향보강리브(43)를 갖는다. 상향보강리브(41) 및 하향보강리브(43)는, 상향측벽부(13) 및 하향측벽부(33)의 양측벽면의 수평방향을 따라 양측으로 확장되거나 공동구(20)의 외측벽면의 수평방향을 따라 일벽면으로 확장 형성된다.On the other hand, as shown in Figures 2 and 3, the butt coupling region of the upper side wall portion 13 and the lower side wall portion 33 is unevenly coupled, the butt coupling region is reinforced in the thickness direction of the butt coupling region The rib 40 is formed. The reinforcing rib 40 has an upward reinforcing rib 41 extended in the thickness direction of the upward side wall portion 13 and a downward reinforcing rib 43 extended in the thickness direction of the downward side wall portion 33. The upward reinforcing rib 41 and the downward reinforcing rib 43 extend in both sides along the horizontal direction of both side wall surfaces of the upper side wall portion 13 and the downward side wall portion 33 or the horizontal direction of the outer wall surface of the cavity 20. It extends along one wall along the side.
여기서, 요철맞물림결합부는, 보강리브(40)에 형성되며, 상향측벽부(13)에 하향측벽부측(33)를 향하여 돌출형성된 고정돌기(45)와, 고정돌기(45)와 상호 대응하며 고정돌기(45)를 수용하도록 하향측벽부(33)에 형성된 돌기수용홈(47)을 갖는다.Here, the uneven engagement coupling portion is formed in the reinforcing rib 40, the fixing protrusion 45 and protruded toward the downward side wall portion 33 to the upper side wall portion 13, and mutually and fixed to the fixing protrusion 45 It has the projection accommodation groove 47 formed in the downward side wall part 33 so that the projection 45 may be accommodated.
또한, 도 4 및 도 5에 도시된 바와 같이, 본 고안의 암거유니트는, 상향측벽부(13) 및 하향측벽부(33)가 요철결합되며, 이 요철결합영역에는 요철결합영역의 두께방향으로 확장된 보강리브(40)가 형성되어 있다.In addition, as shown in Figs. 4 and 5, the culvert unit of the present invention, the upper side wall portion 13 and the lower side wall portion 33 is unevenly coupled, this uneven coupling region in the thickness direction of the uneven coupling region Extended reinforcement ribs 40 are formed.
보강리브영역에는 요철결합되는 고정돌기(45)와 돌기수용홈(47)이 형성되어 있으며, 또한, 각 보강리브영역의 측벽부(13,33)의 벽면으로부터 상호 대응하도록 형성된 벽면함몰부(50)와, 양 벽면함몰부(50)를 상호 연통하는 체결공(51)과, 이 체결공(51)을 통과하는 체결볼트(53) 및 체결볼트(53)와 체결결합되는 체결너트(55)를 갖는다.The reinforcing rib region is provided with fixing projections 45 and protrusion receiving grooves 47 which are unevenly coupled, and wall recesses 50 formed to correspond to each other from the wall surfaces of the side wall portions 13 and 33 of each reinforcing rib region. ), A fastening hole 51 communicating with both wall recesses 50, and a fastening nut 55 fastened to the fastening bolt 53 and the fastening bolt 53 passing through the fastening hole 51. Has
이러한 구성에 의하여, 암거유니트의 저판부재(10) 및 상판부재(30)를 조립하고자 할 때에는, 저판부재(10)를 설치위치에 고정시킨 후, 저판부재(10)와 상호 맞물림되도록 상판부재(30)를 결합한다.By this configuration, when the bottom plate member 10 and the top plate member 30 of the culvert unit are to be assembled, the bottom plate member 10 is fixed to the installation position, and then the top plate member 10 is engaged with the bottom plate member 10. Combine 30).
이때, 저판부재(10)의 상향측벽부(13)와 상판부재(30)의 하향측벽부(33)는 상향측벽부(13) 및 하향측벽부(33)에 각각 형성된 고정돌기(45) 및 돌기수용홈(47)에 의하여 요철맞물림 결합된다. 그리고, 각각의 측벽부(13,33)의 두께를 확장시킨 상향보강리브(43)와 하향보강리브(41)에 의하여 상향측벽부(13)와 하향측벽부(33)의 접촉면적을 넓힐 수 있어, 상판부재(30)와 저판부재(10)의 안전성을 향상시킬 수 있다.At this time, the upward side wall portion 13 of the bottom plate member 10 and the downward side wall portion 33 of the top plate member 30 are fixing projections 45 formed on the upward side wall portion 13 and the downward side wall portion 33, respectively; Uneven engagement is engaged by the projection receiving groove (47). In addition, the contact area between the upper side wall portion 13 and the lower side wall portion 33 can be widened by the upward reinforcing ribs 43 and the downward reinforcing ribs 41 having the thicknesses of the side wall portions 13 and 33 extended. Thus, the safety of the upper plate member 30 and the bottom plate member 10 can be improved.
또한, 상향보강리브(43)가 형성된 저판부재(10)와 하향보강리브(41)가 형성된 상판부재(30)를 맞물림결합시킨 후, 상향측벽부(13)와 하향측벽부(33)에 형성된 벽면함몰부(50)의 연통공(51)에 체결볼트(53) 및 체결너트(55)를 수용시켜 나사결합시킴으로서 상판부재(30)와 저판부재(10)의 결합을 보다 견고하게 할 수 있다.In addition, after engaging the bottom plate member 10 having the upper reinforcing rib 43 and the upper plate member 30 having the lower reinforcing rib 41 is formed, the upper side wall portion 13 and the lower side wall portion 33 The coupling between the top plate member 30 and the bottom plate member 10 can be more firmly by receiving the fastening bolt 53 and the fastening nut 55 in the communication hole 51 of the wall recessed part 50 and screwing them together. .
이렇게 외관이 형성된 각 조립식 암거를 현장에서는 공동구(20)가 연통되도록 나열시킨 다음, 각 조립식 암거의 결합부위의 결합성을 견고하게 하기 위하여 상판부재(30)에 형성된 그라우팅주입홈(35)으로 그라우트를 주입하면 그라우트는 그라우팅충전부(15)에 충전되어 각 조립식 암거가 견고하게 결합된다.The prefabricated culverts formed in this way are arranged so that the cavities 20 communicate with each other in the field, and then grouted into the grouting injection grooves 35 formed in the upper plate member 30 in order to firmly bond the coupling portions of the prefabricated culverts. When injected, the grout is filled in the grouting filling unit 15, each prefabricated culvert is firmly coupled.
이와 같이, 상판부재와 저판부재에 각각의 측벽부의 두께방향으로 확장된 보강리브를 형성하므로서, 상판부재와 저판부재의 상호 맞물림 결합시 접촉면적을 넓힐 수 있어, 조립 결합시 안전성을 보다 향상시킬 수 있다.Thus, by forming the reinforcing ribs extending in the thickness direction of each side wall portion in the upper plate member and the bottom plate member, the contact area can be widened when the upper plate member and the bottom plate member is engaged with each other, thereby improving the safety when assembling and assembly. have.
이상에서 설명한 바와 같이, 본 고안에 따르면, 상판부재와 저판부재의 상호 접촉면적을 증대시켜 상호 결합 상태를 보다 견고하게 유지시킬 수 있으며, 상판부재 및 저판부재의 결합부위의 안전성을 향상시킬 수 있는 암거유니트가 제공된다.As described above, according to the present invention, it is possible to increase the mutual contact area between the top plate member and the bottom plate member to maintain a more firmly bonded state, and to improve the safety of the coupling portion of the top plate member and the bottom plate member Culvert units are provided.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019990008514U KR200275110Y1 (en) | 1999-05-18 | 1999-05-18 | Cuvert |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019990008514U KR200275110Y1 (en) | 1999-05-18 | 1999-05-18 | Cuvert |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20000021002U KR20000021002U (en) | 2000-12-15 |
| KR200275110Y1 true KR200275110Y1 (en) | 2002-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019990008514U KR200275110Y1 (en) | 1999-05-18 | 1999-05-18 | Cuvert |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101078830B1 (en) * | 2009-04-20 | 2011-11-02 | 이소라 | Pre-casting structure |
| KR102294962B1 (en) | 2021-02-26 | 2021-08-30 | 주식회사 지구코퍼레이션 | Sectionally devided precast culvert box and the construction method thereof |
-
1999
- 1999-05-18 KR KR2019990008514U patent/KR200275110Y1/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101078830B1 (en) * | 2009-04-20 | 2011-11-02 | 이소라 | Pre-casting structure |
| KR102294962B1 (en) | 2021-02-26 | 2021-08-30 | 주식회사 지구코퍼레이션 | Sectionally devided precast culvert box and the construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20000021002U (en) | 2000-12-15 |
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