KR20090069738A - Joining apparatus of prefab manhole - Google Patents

Joining apparatus of prefab manhole Download PDF

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Publication number
KR20090069738A
KR20090069738A KR1020070137512A KR20070137512A KR20090069738A KR 20090069738 A KR20090069738 A KR 20090069738A KR 1020070137512 A KR1020070137512 A KR 1020070137512A KR 20070137512 A KR20070137512 A KR 20070137512A KR 20090069738 A KR20090069738 A KR 20090069738A
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South Korea
Prior art keywords
manhole
spheres
bolt
coupling
sphere
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KR1020070137512A
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Korean (ko)
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권태수
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주식회사 덕산엠앤씨
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Priority to KR1020070137512A priority Critical patent/KR20090069738A/en
Publication of KR20090069738A publication Critical patent/KR20090069738A/en

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/121—Manhole shafts; Other inspection or access chambers; Accessories therefor characterised by the connection between shaft elements, e.g. of rings forming said shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/10—Manholes; Inspection openings; Covers therefor
    • B65D90/105—Manholes; Inspection openings; Covers therefor for underground containers
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories
    • E03F2005/028—Sealing joints between manhole segments

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

An assembling equipment of a prefabricated manhole is provided to prevent vertical separation between spherical bodies when the ground subsides and to prevent damage of the sphere formed with the concrete. An assembling equipment of a prefabricated manhole comprises a latch(20) and a fastener(12) which are elastic. Bonding grooves with holders(24) in the upper and lower parts of manhole spheres(4,8) capable of being stacked are formed. In the state that the upper and lower part bonding grooves face to each other, the latch is inserted in the holder. The fastener comprises a connecting bolt(14) which is bolt-coupled through the coupling holes of the latches. The top of the latch is bolt-coupled in the state which a reinforcing piece(18) is placed. The reinforcing piece is formed in order to cover the entire top of the latch. In the holder, a coupling space(30) which enables fastening of a bolt head(14a) and a nut(22) of the connecting bolt is formed.

Description

조립식 맨홀의 결합장치{JOINING APPARATUS OF PREFAB MANHOLE}Joining device of prefabricated manhole {JOINING APPARATUS OF PREFAB MANHOLE}

본 발명은 조립식 맨홀에 관한 것으로서, 특히 조립성이 용이하면서도 수밀을 방지하고, 또한 수압에 의한 맨홀 각 구체간의 이탈을 방지하도록 한 조립식 맨홀의 결합장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a prefabricated manhole, and more particularly, to an assembly device of a prefabricated manhole, which is easy to assemble and prevents watertightness, and prevents separation between the spheres of the manhole by water pressure.

일반적으로 조립식 맨홀은 하부구체, 연직구체, 상부구체로 나뉘어져 형성되어 깊은 지반에 설치시 사용된다. 지반에 각 맨홀구체들을 차례대로 적층시 맨홀구체들의 단부 사이에 틈이 발생하게 되는데 통상 각 맨홀구체간의 단부 사이에 수밀방지용 패킹을 구비시킨 다음 맨홀구체들의 접단부 내외부에 시멘트로 마무리 하거나 접단부 외주면에 테이핑 처리하여 왔다. 이런 방식으로 조립식 맨홀을 설치하게 되면 수밀방지용 패킹을 완벽하게 압착시켜주지 못하므로 패킹 사이로 공기나 물이 새어나가 긴밀한 수밀을 할 수 없게 되고, 수압에 견디기 힘들게되므로 이로 의한 맨홀구체간의 이탈이 쉽게 된다. 또한 지반침하시 맨홀구체끼리 쉽게 분리가 되는 등의 문제점이 있었다.In general, the prefabricated manhole is formed by dividing the lower sphere, the vertical sphere, and the upper sphere, and is used for installation in deep ground. When the manhole spheres are stacked on the ground in turn, gaps are generated between the ends of the manhole spheres. Normally, watertight packings are provided between the end portions of the manhole spheres, and then cemented inside and outside the end portions of the manhole spheres. Has been taped. If the prefabricated manhole is installed in this way, it will not be able to press the watertight packing completely, so air or water will leak out between the packings, making it impossible to close water tightly, and it will be difficult to withstand water pressure. . In addition, there was a problem such that the manhole spheres easily separated during ground subsidence.

따라서 본 발명의 목적은 체결이 용이하면서도 수밀과 이탈을 방지하도록 한 조립식 맨홀의 결합장치를 제공함에 있다.Therefore, an object of the present invention is to provide a coupling device of the prefabricated manhole to facilitate the fastening and to prevent the watertight and detachment.

상기한 목적을 달성하기 위한 본 발명은, 조립식 맨홀의 결합장치에 있어서, 적층가능한 맨홀구체(6)(8)(4)의 상하부에 걸림부(24)를 갖는 결합홈(10)들을 형성하고, 맨홀구체(6)(8)(4)의 상하 결합홈(10)들이 마주한 상태에서, 상하 결합홈(10)내 걸림부(24)에 끼워져 걸림고정되는 탄성을 갖는 고정체(20)와, 상하 결합홈(10)의 각 걸림부(24)에 끼움된 고정체(20)들의 체결공(20a)을 통해 볼트체결되는 연결볼트(14)로 구성된 체결구(12)를 결합홈(10)에 삽입하여 걸림고정되게 구성함을 특징으로 한다.The present invention for achieving the above object, in the coupling device of the prefabricated manhole, to form the coupling grooves 10 having a locking portion 24 in the upper and lower portions of the stackable manhole sphere (6) (8) (4) In the state where the upper and lower coupling grooves 10 of the manhole spheres 6, 8, and 4 face each other, the fixing body 20 has elasticity that is fitted into the locking portion 24 in the upper and lower coupling grooves 10 and fixed thereto. The fastener 12 consisting of a connection bolt 14 which is bolted through the fastening holes 20a of the fixing bodies 20 fitted into the engaging portions 24 of the upper and lower coupling grooves 10, the coupling grooves 10. Inserted into a) characterized in that the locking is configured to be fixed.

본 발명은 볼트, 너트 체결구조를 갖으면서 외부 측면에서 조립 가능하게함으로써 조립성이 용이하고, 투입이 편리하여 현장에서 조립시간이 매우 단축되며, 고정체에 의한 압착결합이 가능하게 됨으로써 맨홀내 긴밀한 수밀방지와 수압에 의한 맨홀 구체간의 이탈을 방지해 주는 효과가 있다. 또한 지반침하시 맨홀을 구성하는 구체간의 상하 분리를 방지해 주고, 탄성을 갖는 고무재질의 고정체로 압착함 으로써 결합시 콘크리트로 형성된 구체의 파손을 방지해 주게 되는 등의 장점이 있다.The present invention has a bolt and nut fastening structure and can be assembled from the outside side, easy to assemble, easy to put the assembly time in the field is very short, it is possible to press-fit by the fixing body tightly in the manhole There is an effect of preventing the separation between the manhole sphere by watertightness and water pressure. In addition, there is an advantage of preventing the upper and lower separation between the spheres constituting the manhole during ground subsidence, and by preventing the breakage of the spheres formed of concrete at the time of bonding by crimping with a fixed body of rubber material having elasticity.

이하 본 발명의 바람직한 실시 예를 첨부한 도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 실시 예에 따른 조립식 맨홀의 결합장치 구성을 알 수 있는 사시도이고, 도 2는 조립식 맨홀을 구성하는 연직구체의 사시 구성도이며, 도 3은 결합장치의 결합 사시도이다. 그리고 도 4는 결합장치의 분해 사시도이고, 도 5는 조립식 맨홀의 결합상태를 알 수 있는 일부 절단 사시 구성도이며, 도 6은 도 5의 측단면 구성도이다.1 is a perspective view showing the configuration of the coupling device of the prefabricated manhole according to an embodiment of the present invention, Figure 2 is a perspective configuration diagram of the vertical sphere constituting the prefabricated manhole, Figure 3 is a perspective view of the coupling device. And Figure 4 is an exploded perspective view of the coupling device, Figure 5 is a partial cutaway perspective view showing the assembled state of the prefabricated manhole, Figure 6 is a side cross-sectional view of FIG.

조립식 맨홀(2)은 크게 상부구체(4), 하부구체(6) 및 양 구체(4,6)를 잇는 연직구체(8)로 구성된다. 연직구체(8)는 지반의 깊이에 따라 다수개로 구성될 수 도 있다. 도 1 내지 도 6을 다 함께 참조하면, 본 발명의 실시 예에 따른 조립식 맨홀의 결합장치는, 각각의 맨홀구체(6,8,4)들을 순서대로 적층 조립시 마주하는 맨홀구체(6,8,4)의 상하부에 다수 결합홈(10)을 형성하고, 맨홀구체(6,8,4)의 결합홈(10)들이 상하 마주한 상태에서 결합홈(10)내에 체결구(12)를 삽입하여 구성된다. 체결구(12)는 도 4에서와 같이 연결볼트(14), 와셔(16), 보강편(18), 고정체(20) 및 너트(22)로 구성된다.The prefabricated manhole 2 consists largely of a vertical sphere 8 connecting the upper sphere 4, the lower sphere 6 and both spheres 4, 6. The vertical sphere 8 may be composed of a plurality depending on the depth of the ground. 1 to 6 together, the coupling device of the prefabricated manhole according to an embodiment of the present invention, each manhole sphere (6,8,4) in order to stack the manhole spheres (6,8) facing each other A plurality of coupling grooves 10 are formed at upper and lower portions of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower sides of the upper and lower ends of the upper and lower ends of the upper and lower endss of the upper and lower endss. It is composed. The fastener 12 is composed of a connection bolt 14, washer 16, reinforcing piece 18, the fixing body 20 and the nut 22 as shown in FIG.

도 3에서와 같이 맨홀구체(6,8,4)들의 상하부에 갖는 결합홈(10)에는 체결 구(12)의 고정체(20)가 삽입되도록 충분한 공간을 갖는 걸림부(24)가 형성된다. 걸림부(24)에는 각 맨홀구체(6,8,4)의 상하부 결합방향으로 하향 경사지도록 걸림턱(26)이 형성되고, 연결볼트(14) 체결시 볼트머리(14a)와 너트(22)를 죌 수 있는 체결공간(30)이 형성되며, 걸림턱(26)에 체결구(12)를 삽입안착시킨다.As shown in FIG. 3, the engaging groove 10 having upper and lower portions of the manhole spheres 6, 8, and 4 is provided with a locking portion 24 having a sufficient space for the fixing body 20 of the fastener 12 to be inserted therein. . A locking jaw 26 is formed in the locking portion 24 so as to be inclined downward in the upper and lower coupling directions of the manhole spheres 6, 8, and 4, and the bolt head 14a and the nut 22 when the connection bolt 14 is fastened. A fastening space 30 is formed to hold the fastener 12 into the locking jaw 26.

고정체(20)의 상단면에는 죄여지는 압에 대한 고정체(20)의 형상변화를 방지해 주는 보강편(18)을 안착시키고, 보강편(18) 상단면에 와셔(16)를 안착시킨 다음 연결볼트(20) 및 너트(22)로 체결한다. 이때 보강편(18)은 고정체(20)의 상단면 전체를 덮을 정도로 형성되는 것이 바람직하다.The upper surface of the fixing body 20 is seated in the reinforcing piece (18) to prevent the shape change of the fixing body 20 against the clamping pressure, and the washer (16) is seated on the upper surface of the reinforcing piece (18). Then tighten with a connecting bolt 20 and a nut 22. At this time, the reinforcing piece 18 is preferably formed to cover the entire upper surface of the fixing body (20).

각 맨홀구체(6,8,4)의 상하부와 걸림부(24)간에는 일정간격을 두어 공간을 형성하여 마주하는 걸림부(24)간에 일정공간이 형성되게 함으로써 마주하는 걸림부(24)끼리 연통되도록 구성함이 바람직하나, 걸림부(24)간에 일정공간 없이 걸림부(24)끼리 직접 연통되어도 무방하다.The upper and lower portions of the manhole spheres 6, 8 and 4 and the engaging portion 24 form a space therebetween so that a certain space is formed between the engaging portions 24 facing each other so that the engaging portions 24 communicate with each other. It is preferable that the configuration is possible, but the locking portions 24 may be directly communicated with each other without any space.

결합홈(10)은 도 1에서와 같이 상부구체(4)의 하단부, 연직구체(8)의 상,하단부, 하부구체(6)의 상단부에 각각 형성되고, 또한 체결이 안정감 있게 되도록 각 단부에 3개 이상으로 형성되는 것이 바람직하다.Coupling groove 10 is formed at the lower end of the upper sphere 4, the upper and lower ends of the vertical sphere 8, the upper end of the lower sphere 6, respectively, as shown in FIG. It is preferable to form three or more.

고정체(20)는 각 맨홀구체(6,8,4)의 상하부 결합방향으로 하향 경사지게 형성된 걸림턱(26)에 밀착되도록 도 3 및 도 5에서처럼 걸림턱(26)과 동일하게 하향 경사지도록 형성되는 것이 바람직하다. 이때 걸림턱(26)은 각진 형상, 단턱진 형상, 계단진 형상, 호형상 등 걸림구조를 갖는 것이면 모두 만족하고, 이에 따라 고정체(20)를 걸림 가능한 형상으로 형성하면 된다. 또한 고정체(20)는 맨홀구 체(6,8,4)간의 결합시 콘크리트의 파손을 방지하도록 탄성을 갖는 합성수지재로 형성됨이 바람직하다. 또한 고정체(20)에는 연결볼트(14)가 관통되는 체결공(20a)이 형성된다.The fixing body 20 is formed to be inclined downward in the same manner as the locking step 26 as shown in FIGS. 3 and 5 so as to be in close contact with the locking step 26 formed to be inclined downward in the upper and lower coupling directions of the manhole spheres 6, 8 and 4. It is desirable to be. At this time, the locking jaw 26 is satisfactory as long as it has a locking structure, such as an angular shape, stepped shape, stepped shape, arc shape, and accordingly, it is sufficient to form the fixing body 20 can be locked. In addition, the fixing body 20 is preferably formed of a synthetic resin material having elasticity to prevent breakage of the concrete when the manhole sphere (6, 8, 4) coupling. In addition, the fixing body 20 is formed with a fastening hole 20a through which the connecting bolt 14 passes.

미설명부호 “32”는 “맨홀뚜껑”이다.Unexplained symbol "32" is "manhole cover".

상기한 구성으로 조립식 맨홀을 설치시, 굴착된 지반의 바닥에 먼저 하부구체(6)를 안착시키고, 그 상부로 연직구체(8) 및 상부구체(4)를 차례대로 안착시키되, 각 맨홀구체(6,8,4) 사이에 수밀방지용 패킹(28)을 끼우고 각각의 결합홈(10)들이 마주하도록 안착시킨 다음, 도 3에서와 같이 연결볼트(14), 와셔(16), 보강편(18), 고정체(20), 너트(22)를 헐겁게 체결조립한 상태에서 조립된 체결구(12)를 결합홈(10)내 걸림부(24)에 끼우면 된다. 도 6에서와 같이 체결구(12)의 고정체(20)가 결합홈(10)의 걸림부(24)에 안착되면 연결볼트(14)의 상,하측으로 체결공간(30)이 형성되므로 조립 체결 후 측면에서 공구를 이용하여 연결볼트(14)를 쉽게 죌 수 있게 되어 조립성이 용이하게 된다.When the prefabricated manhole is installed in the above configuration, the lower sphere 6 is first seated on the bottom of the excavated ground, and the vertical sphere 8 and the upper sphere 4 are seated in the upper portion, respectively, and each manhole sphere ( 6, 8, and 4 between the watertight packings 28 and each coupling groove 10 to face each other, then as shown in Figure 3 connecting bolt 14, washer 16, reinforcing piece ( 18), the fastener 12 assembled in the state of loosely fastening and assembling the fixing body 20 and the nut 22 may be inserted into the engaging portion 24 in the coupling groove 10. As shown in FIG. 6, when the fixing body 20 of the fastener 12 is seated on the locking portion 24 of the coupling groove 10, the fastening space 30 is formed above and below the connecting bolt 14. After fastening, it is easy to assemble the connecting bolt 14 by using a tool from the side to facilitate assembly.

연결볼트(14)를 죄게되면 마주하는 고정체(20)들이 걸림부(24)의 걸림턱(26)을 따라 죄여지면서 마주하는 맨홀구체(6,8,4)들이 서서히 밀착되어 맨홀구체(6,8,4)간의 상하 부에 구비된 수밀방지용 패킹(28)을 더욱 긴밀하게 압착시켜주게 된다. 이렇게 함으로써 각 맨홀구체(6,8,4)들을 더욱 긴밀하게 결합시켜 줄 수 있게 된다.When the connecting bolt 14 is tightened, the fixing bodies 20 facing each other are tightened along the locking jaw 26 of the locking portion 24, and the manhole spheres 6, 8, and 4 facing each other are gradually brought into close contact with each other. 6,8,4 will be pressed more tightly to the watertight prevention packing 28 provided in the upper and lower parts. In this way, the manhole spheres 6, 8 and 4 can be more closely coupled.

한편 고정체(20)에 눈금을 표시하여 사용하면, 맨홀구체(6,8,4)간의 결합시 고정체(20)를 죌 때 맨홀의 크기 및 주변환경 등에 따라 지정된 표시눈금까지만 죄 면 되므로 체결력을 일정하게 유지시킬 수 있다.On the other hand, when the scale is displayed on the fixture 20, the clamping force is only tightened up to the designated scale according to the size and surrounding environment of the manhole when releasing the fixture 20 during the engagement between the manhole spheres 6, 8 and 4. Can be kept constant.

상술한 본 발명의 설명에서는 구체적인 실시 예에 관해 설명하였으나, 여러 가지 변형이 본 발명의 범위에서 벗어나지 않고 실시할 수 있다. 따라서 본 발명의 범위는 설명된 실시 예에 의하여 정할 것이 아니고 특허청구범위와 특허청구범위의 균등한 것에 의해 정해 져야 한다.In the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be defined by the described embodiments, but should be determined by the equivalent of claims and claims.

본 발명은 조립식 맨홀에 사용된다.The present invention is used in prefabricated manholes.

도 1은 본 발명의 실시 예에 따른 조립식 맨홀의 결합장치 구성을 알 수 있는 사시도,1 is a perspective view showing a coupling device configuration of a prefabricated manhole according to an embodiment of the present invention,

도 2는 조립식 맨홀을 구성하는 연직구체의 사시 구성도,2 is a perspective configuration diagram of a vertical sphere constituting a prefabricated manhole,

도 3은 결합장치의 결합 사시도,3 is a perspective view of the coupling device,

도 4는 결합장치의 분해 사시도,4 is an exploded perspective view of the coupling device;

도 5는 조립식 맨홀의 결합상태를 알 수 있는 일부 절단 사시 구성도,5 is a partial cutaway perspective view showing the assembled state of the prefabricated manhole,

도 6은 도 5의 측단면 구성도.6 is a side cross-sectional view of FIG.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

(2)--맨홀 (4)--상부구체(2)-manhole (4)-upper sphere

(6)--하부구체 (8)--연직구체(6)-inferior sphere (8)-vertical sphere

(10)--결합홈 (12)--체결구(10)-engagement groove (12)-fastener

(14)--연결볼트 (14a)--볼트머리(14)-Connection Bolt (14a)-Bolt Head

(16)--와셔 (18)--보강편(16)-Washer (18)-Reinforcement

(20)--고정체 (22)--너트(20)-fixation (22)-nut

(24)--걸림부 (26)--걸림턱(24)-Hanging Part (26)-Jag Jaw

(28)--수밀방지용 패킹 (30)--체결공간(28)-Watertight Packing (30)-Tightening Space

(32)--맨홀뚜껑(32)-Manhole Cover

Claims (2)

조립식 맨홀의 결합장치에 있어서,In the coupling device of the prefabricated manhole, 적층가능한 맨홀구체(6)(8)(4)의 상하부에 걸림부(24)를 갖는 결합홈(10)들을 형성하고, 맨홀구체(6)(8)(4)의 상하 결합홈(10)들이 마주한 상태에서, 상하 결합홈(10)내 걸림부(24)에 끼워져 걸림고정되는 탄성을 갖는 고정체(20)와, 상하 결합홈(10)의 각 걸림부(24)에 끼움된 고정체(20)들의 체결공(20a)을 통해 볼트체결되는 연결볼트(14)로 구성된 체결구(12)를 결합홈(10)에 삽입하여 걸림고정되게 구성함을 특징으로 하는 조립식 맨홀의 결합장치.Upper and lower coupling grooves 10 having locking portions 24 are formed in upper and lower portions of the stackable manhole spheres 6, 8, and 4, and the upper and lower coupling grooves 10 of the manhole spheres 6, 8, and 4 are formed. In the state facing each other, the fixing body 20 having elasticity to be fitted into the locking portion 24 in the upper and lower coupling grooves 10, and the fixed body fitted in each locking portion 24 of the upper and lower coupling grooves 10. The coupling device of the prefabricated manhole, characterized in that the fastening hole (12) consisting of a connection bolt 14 is bolted through the fastening hole (20a) of the 20 inserted into the coupling groove (10) to be locked. 제1항에 있어서, 고정체(20) 상부에는 보강편(18)이 안착된 상태에서 볼트체결되게 구성하고, 결합홈(10)내 걸림부(24)에는 연결볼트(14)의 볼트머리(14a) 및 너트(22)를 죄임 체결하는 체결공간(30)이 형성됨을 특징으로 하는 조립식 맨홀의 결합장치.According to claim 1, The upper part of the fixing body 20 is configured to be bolted in the state in which the reinforcing piece 18 is seated, and the locking head (24) of the connecting bolt 14 in the engaging portion 24 in the coupling groove (10) 14a) and the coupling device of the prefabricated manhole, characterized in that the fastening space 30 for tightening the nut 22 is formed.
KR1020070137512A 2007-12-26 2007-12-26 Joining apparatus of prefab manhole KR20090069738A (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105862990A (en) * 2016-03-24 2016-08-17 上海市机械施工集团有限公司 Prefabricated assembly well wall structure and construction method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105862990A (en) * 2016-03-24 2016-08-17 上海市机械施工集团有限公司 Prefabricated assembly well wall structure and construction method thereof

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