KR20100045855A - Earth retaining wall and it's construction method using the precast pile and ground reinforcement - Google Patents

Earth retaining wall and it's construction method using the precast pile and ground reinforcement Download PDF

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KR20100045855A
KR20100045855A KR1020080104980A KR20080104980A KR20100045855A KR 20100045855 A KR20100045855 A KR 20100045855A KR 1020080104980 A KR1020080104980 A KR 1020080104980A KR 20080104980 A KR20080104980 A KR 20080104980A KR 20100045855 A KR20100045855 A KR 20100045855A
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ground
injection
wall
pile
support
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KR1020080104980A
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Korean (ko)
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KR101078080B1 (en
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박이근
현찬섭
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박이근
현찬섭
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/02—Foundation pits
    • E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/06—Foundation trenches ditches or narrow shafts
    • E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
    • E02D17/083—Shoring struts
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/02—Sheet piles or sheet pile bulkheads
    • E02D5/03—Prefabricated parts, e.g. composite sheet piles
    • E02D5/10—Prefabricated parts, e.g. composite sheet piles made of concrete or reinforced concrete
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/02—Sheet piles or sheet pile bulkheads
    • E02D5/16—Auxiliary devices rigidly or detachably arranged on sheet piles for facilitating assembly
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2200/00—Geometrical or physical properties
    • E02D2200/16—Shapes
    • E02D2200/1685—Shapes cylindrical
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2220/00—Temporary installations or constructions
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/003—Injection of material

Abstract

PURPOSE: A retaining wall using a bearing pile and ground reinforcement, and a construction method thereof are provided to prevent the ground from being deformed by easily securing the strength. CONSTITUTION: A retaining wall using a bearing pile and ground reinforcement is composed as follows. Fixing members(30) with multiple couplers(21) are installed in a pre-manufactured bearing pile(50) at certain intervals. Injection guide pipes(10) are inserted into the couplers. The bearing pile in which the injection guide pipes are installed is inserted into a perforated hole. The bearing pile is filled with grout through the injection guide pipes, and forms a cutoff wall to strengthen the ground.

Description

지지말뚝과 지반보강을 이용한 흙막이벽체 및 그 시공방법{Earth retaining wall and it's construction method using the precast pile and ground reinforcement}Earth retaining wall and it's construction method using the precast pile and ground reinforcement}

본 발명은 기성말뚝과 지반보강을 이용한 흙막이벽체 및 그 시공방법에 관한 것으로, 소정간격마다 분사공이 뚫린 수개의 주입유도관이 고정부재에 의해 외주연으로 설치된 지지말뚝을 천공홀로 삽입시키고 주입유도관으로 그라우트재를 고압 주입시켜 그라우트재가 주입유도관의 분사공을 통해 기성말뚝 주변지반 내측으로 침투되며 차수벽을 형성하도록 하여 연접 형성되는 기성말뚝 사이 지반의 차수처리 및 흙막이벽으로서 필요한 지반강성을 확보하면서 경제적인 흙막이벽체 시공이 가능한 기성말뚝과 지반보강을 이용한 흑막이벽체 및 그 시공방법에 관한 것이다. The present invention relates to a retaining wall using a ready-made pile and ground reinforcement, and a construction method thereof, wherein a plurality of injection guide pipes having injection holes drilled at predetermined intervals are inserted into a perforated hole by a support member, and the injection guide pipe The grout material is injected at a high pressure to allow the grout material to penetrate into the periphery of the ready-made pile through the injection hole of the induction pipe to form the order walls, while securing the necessary ground rigidity as the order treatment and soil wall between the ready-made piles. The present invention relates to a ready-made pile and ground reinforcement that can be used for economical wall construction and its construction method.

일반적으로 지하구조물을 구축하고자 할 경우에는 소정의 깊이까지 터파기가 요구되는 부지여유가 부족하기 때문에 수직으로 벽체(가설 또는 영구)를 형성하여 굴착배면의 안정성을 확보한 후 지하구조물의 기초를 형성하고 지하구조물, 지상구 조물 순으로 공사를 진행한다. 흙막이 공사시에는 인접대지를 침범하게 되어 앵커나 버팀대로 지지하게 되고, 특히 경사가 급하고 부지여유가 없는 절개지에 부지를 조성하고 옹벽을 시공하고자 할 때에는 흙막이 가시설이 필요하게 된다.In general, when the underground structure is to be built, there is a shortage of site space required for the excavation to a predetermined depth, so the walls (temporary or permanent) are formed vertically to secure the stability of the excavation back, then form the foundation of the underground structure. The construction works in the order of the underground structure and the ground structure. During the construction of the wall, it will invade the adjacent site and support it with anchors or braces. In particular, when the site is to be built and the retaining wall will be built on the incline where there is a steep slope and there is no free space, it will be necessary to install the wall.

이러한 종래의 흙막이 시공공법으로는 도 1 내지 도 2에 보인바와 같이 H-PILE 과 토류판을 이용하는 공법, CIP 공법이 있으며, 이외에도 다양한 공법이 실시되어지고 있다.As a conventional construction method of the earth clogs, there is a method using the H-PILE and the earth plate, CIP method as shown in Figs. 1 to 2, and various other methods have been carried out.

먼저 H-PILE(1)과 토류판(2)을 이용하는 공법은 도1에 보인바와 같이 H-PILE(1)을 흙막이를 설치해야할 지반에 천공장치로 천공 후 삽입 또는 직접 지반에 항타기로 항타하여 설치한 후, 터파기를 진행하면서 상기 설치된 H-PILE(1) 사이에 목재 토류판(2)을 끼워 벽체 즉 흙막이를 형성하는 바, 상기 흙막이는 틈새가 많기 때문에 흙막이 배면에 차수를 위하여 별도의 차수보강그라우팅(C)을 시행해야한다. 상기 H-PILE공법은 토류판(2)의 강성이 약해 주변 지반 변위 발생의 소지가 높고, 가시설 사용기간이 길 경우 토류판 해체가 어려워 매몰시키는 경우가 많은데 이때 흙속에서 토퓨판의 부식이 발생하여 지반 침하가 우려되며, 무엇보다도 차수벽 형성을 위한 별도의 작업이 요구되어 공사기간이 길어지고, 공사비가 추가 발생한다는 문제점이 있으며, CIP(CAST-IN PLACE PILE)공법은 일종의 주열식 현장타설 말뚝공법으로 도2와 같이 소정직경으로 구멍(H)을 천공하고, 철근(3) 또는 H-PILE(1)을 상기 구멍에 건입 한 후, 자갈을 채우고 시멘트 페이스트를 상기 구멍에 주입하여 흙막이를 형성시키는 공법으로서, 협소구간의 흙막이 시공이 가능하며, 단면크기에 비해 강성이 크다는 장점이 있으나 오버랩시공이 불가능하고, 이로 인한 말뚝과 말뚝사이의 누수방지를 위해 별도의 보조 그라우팅공법에 의한 차수벽(C) 형성을 병행해야 한다는 시공성 불량과 상기 H-PILE 과 토류판을 이용하는 공법과 동일하게 공사비 증가의 요인이 되는 문제점이 있다.First, the method using the H-PILE (1) and the earth plate (2) is installed by punching the H-PILE (1) with a punching device on the ground to which the earth block is to be installed, or inserting it directly into the ground as shown in FIG. Afterwards, while inserting the wood earthen board (2) between the installed H-PILE (1) while proceeding the excavation bar to form a wall, that is, because there are many gaps in the back of the earthen reinforcement grouting for order (C) should be implemented. In the H-PILE method, the soil plate 2 has a low rigidity, and thus there is a high possibility of occurrence of surrounding ground displacement, and when the service life of a temporary facility is long, it is difficult to dismantle the earth plate. There is a concern that, above all, additional work is required to form the order wall, which leads to a long construction period and additional cost. The CIP (CAST-IN PLACE PILE) method is a kind of cast-in-place casting method. As a method of drilling holes H to a predetermined diameter as shown in 2, and inserting reinforcing bars 3 or H-PILE 1 into the holes, filling the gravel and injecting cement paste into the holes to form a soil barrier. , It is possible to construct the soil block of narrow section, and it has the advantage of rigidity compared to the cross-sectional size. It has a separate auxiliary grouting method chasubyeok (C) a problem that a factor of the same cost increase and method using the poor workability and the H-PILE toryupan and the need to parallel form by.

본 발명은 전술한 종래의 문제점을 해결하기 위해 안출한 것으로, The present invention has been made to solve the above-mentioned conventional problems,

기성 제조된 지지말뚝에 소정간격마다 분사공이 뚫린 주입유도관을 고정부재에 의해 일체가 되게 설치하여 지지말뚝에 의한 연속벽체를 형성함과 동시에 지지말뚝으로 설치된 주입유도관을 통하여 그라우트재를 주입시켜 천공홀 지반 내측으로 그라우트재가 긴밀하게 침투되며 주변지반을 강화시킴과 동시에 차수벽의 형성이 가능하게 되어 별도의 차수시공을 실시하기 위한 추가시공이 필요하지 않고 굴착단계에 따라 토류벽을 설치하지 않아도 우수한 흙막이벽체를 형성할 수 있으며, 다양하고 필요한 강성을 용이하게 확보할 수 있어 장기간 지반변형을 방지할 수 있음은 물론 공기단축과 비용절감에 매우 유리한 흙막이 공법을 제공하는데 그 목적이 있다.The injection guide pipe with injection holes drilled at predetermined intervals is made integrally by the fixing member in the existing manufactured support pile to form a continuous wall by the support pile, and the grout material is injected through the injection guide pipe installed as the support pile. The grout material penetrates deeply into the ground of the drilled hole and strengthens the surrounding ground, and at the same time, it is possible to form the order wall, so that no additional construction is needed to carry out the additional order construction, and excellent earth film is not required to install the earth wall according to the excavation stage. It is possible to form a wall, and to easily secure various and necessary stiffnesses to prevent soil deformation for a long time, as well as to provide an earthquake method which is very advantageous for air shortening and cost reduction.

상술한 목적을 달성하기 위한 본 발명의 특징에 의하면, According to a feature of the present invention for achieving the above object,

기성으로 제작되는 지지말뚝(50)에 수개의 결합구(21)가 돌출 형성된 고정부재(20)가 소정 간격으로 설치되고, 상기 고정부재(20)의 결합구(21)로 분사공(11)이 소정간격마다 뚫린 수개의 주입유도관(10)을 끼움식으로 결합시켜 주입호스(10) 가 외주연으로 인접되도록 설치된 지지말뚝(50)을 천공홀(G)로 삽입하고, 주입호스(10)를 통해 그라우트재를 주입시켜 지지말뚝(50)의 주변지반이 개량되어 차수벽을 형성하도록 하는 것이다.The fixing member 20 in which several coupling holes 21 are protruded is installed at a predetermined interval on the support pile 50 that is made of a conventional, and the injection hole 11 to the coupling hole 21 of the fixing member 20. By inserting several injection guide tubes 10 drilled at predetermined intervals by fitting, inserting the support pile 50 installed so that the injection hose 10 is adjacent to the outer circumference, and into the drilling hole G, the injection hose 10 Injecting grout material through) is to improve the peripheral ground of the support pile 50 to form the order wall.

이와 같은 지지말뚝과 지반보강을 이용한 흙막이벽체에는 원통형상의 지지말뚝(50)에 띠장(201)과 같은 수평지지부재를 설치시에 유리하도록 지지말뚝(50)과 띠장(201) 사이에 볼트공(33)이 관통되고 호형형상의 배면(31)과, 평평한 판형상(32)의 전면을 가지는 간격재(30)가 결합된다.In the retaining wall using the support pile and the ground reinforcement, a bolt hole between the support pile 50 and the strip sheet 201 is advantageous to install a horizontal support member such as the strip 201 on the cylindrical support pile 50. 33 is penetrated and the back surface 31 of an arc shape and the spacer 30 which has the front surface of the flat plate shape 32 are combined.

이와 같은 지지말뚝과 지반보강을 이용한 흙막이벽체의 시공방법에 의해 지반으로 천공홀(G)을 형성하고, 천공이 완료되면 천공홀(G)에 수개의 주입호스(10)가 고정부재(20)에 의해 설치된 지지말뚝(50)을 삽입하며,Forming a hole (G) in the ground by the construction method of the retaining wall using the support pile and the ground reinforcement, and when the drilling is completed, several injection hoses 10 in the hole (G) fixing member 20 Insert the support pile 50 installed by,

상기 지지말뚝(50)의 삽입이 완료되면, 지지말뚝과 공벽 사이의 공간을 모래 또는 굴착토사로 되메움한 후, 상기 지지말뚝(50)으로 설치된 주입유도관(10)의 입구부를 통해 그라우트재를 고압으로 주입하여 주입호스(10)로부터 소정간격마다 뚫린 분사공(11)을 통해 외부로 유출되어 주변 지반(500)으로 침투되며 지반의 환경을 개량시켜 지반의 강성을 높임과 동시에 차수벽(S)을 형성할 수 있게 된다.When the insertion of the support pile 50 is completed, the space between the support pile and the vacant wall is filled with sand or excavated soil, and then the grout material through the inlet of the injection guide pipe 10 installed as the support pile 50. Is injected at high pressure and flows out through the injection hole 11 drilled at predetermined intervals from the injection hose 10 to penetrate into the surrounding ground 500, and improves the environment of the ground to increase the stiffness of the ground and at the same time the order wall S ) Can be formed.

본 발명에 따른 기성말뚝과 지반보강을 이용한 흙막이벽체 형성 및 그 시공방법에 의하면, 일정한 간격으로 주입제의 분사를 위한 분사공이 구비된 그라우트 주입호스가 고정부재에 의해 설치된 기성말뚝을 지반천공장비를 이용하여 소정의 간격으로 지중에 설치하고, 설치된 기성말뚝사이 지반에 주입유도관을 통해 그라우트재를 압력주입하여 지반을 개량시켜 주변지반을 강화시킴과 동시에 차수벽을 형성함으로써 굴착 전에 굴착배면지반을 차수 및 개량할 수 있고, 굴착과정에 별도의 토류판을 설치하지 않아도 되며, 버팀대, 앵커 등의 수평지지부재의 시공성을 크게 향상하여 흙막이 벽체의 안전성과 시공성, 경제성을 크게 높이는 효과가 있다. According to the formation method and construction method of the wall using the ready-made pile and the ground reinforcement according to the present invention, the boring injection hose equipped with the injection hole for the injection of the injection agent at regular intervals, Install the ground at predetermined intervals by using the injection-guided pipe in the ground between the installed piles, and improve the ground by strengthening the surrounding ground and forming the order walls at the same time. And it can be improved, and do not need to install a separate earth plate in the excavation process, and greatly improves the workability of the horizontal support members, such as braces, anchors, it has the effect of greatly improving the safety, workability, economics of the retaining wall.

또한, 지지말뚝에 굴착과 동시에 미리 제작된 콘크리트 블록을 조립설치하므로써 굴착과 동시에 조립식옹벽을 시공할 수 있어 부지의 여유가 없어 일반옹벽을 설치할 수 없는 제한적인 경우에도 시공성과 경제성이 높은 역조립식옹벽의 설치가 가능하다.In addition, the pre-fabricated retaining wall can be constructed at the same time as the excavation and the prefabricated concrete block is installed on the support pile. It is possible to install.

본 발명은 토사의 붕괴를 방지하기 위한 흙막이 벽체 시공시 기성으로 제작된 지지말뚝을 지반천공장비를 이용하여 형성되는 천공홀 내부로 삽입시키며 연접시공하여 흙막이 벽체를 형성하고, 연접 시공시 지지말뚝과 지지말뚝 사이 공간부 차수처리를 통한 차수벽을 형성함에 있어서, 그라우트재를 주입할 수 있는 수개의 주입유도관이 고정부재에 의해 인접되게 설치된 지지말뚝을 천공홀로 삽입시키고 지지말뚝과 공벽 사이의 공간을 모래 또는 굴착토사로 되메움한 후, 지지말뚝에 구비된 주입유도관을 통하여 그라우트재를 압력 주입하며, The present invention inserts the support piles made by the existing construction during the construction of the soil wall to prevent the collapse of the earth and sand into the boring hole formed by using the ground drilling equipment, and form the soil wall by the joint construction, the support pile and In forming the order wall through the processing of the space between the supporting piles, insert the supporting piles which are installed by the fixing member adjacent to each other by the fixing member, and insert the supporting piles into the perforation holes and fill the space between the supporting piles and the empty walls. After backfilling with sand or excavated soil, the grout material is pressure-injected through the injection guide pipe provided in the support pile,

상기 주입되는 그라우트재가 주입유도관으로 소정간격마다 뚫린 분사공을 통해 주입유도관의 외부로 유출되도록 하여 그라우트재가 굴토면의 반대쪽 흙막이 벽체 주변지반과 함께 지반을 개량시키면서 굴착 배면지반의 강도가 증가된 차수벽을 형성시켜 우수한 흙막이 벽체를 시공할 수 있도록 한 것에 기술적 특징이 있다.The injected grout material is discharged to the outside of the injection guide pipe through injection holes drilled at predetermined intervals by the injection guide pipe so that the strength of the excavated back ground is increased while the grout material is improved along with the ground around the wall of the wall opposite the oyster surface. There is a technical feature in that it is possible to construct an excellent wall wall by forming the order wall.

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

도 3은 본 발명의 실시예를 보인 사시도를 나타낸 것이며, 도 4는 본 발명의 실시예에 따라 시공된 흙막이벽체를 보인 사시도를 나타낸 것이고, 도 5는 본 발명의 바람직한 실시예에 따른 시공과정을 개략적으로 보인 평면도를 나타낸 것이며, 도 6은 본 발명의 바람직한 실시예에 따른 시공상태를 보인 측단면도를 나타낸 것이고, 도 7은 본 발명의 바람직한 실시예에 따라 차수상태를 보인 평면도를 나타낸 것이며, 도 8은 본 발명의 바람직한 실시예에 따라 다른 시공상태를 보인 평면도를 나타낸 것이며 도 9는 본 발명의 주입유도관으로 그라우트재가 주입되는 상태를 보인 사시도를 나타낸 것이다.Figure 3 shows a perspective view showing an embodiment of the present invention, Figure 4 shows a perspective view showing the earth wall constructed in accordance with an embodiment of the present invention, Figure 5 is a construction process according to a preferred embodiment of the present invention Figure 6 shows a schematic plan view, Figure 6 shows a side cross-sectional view showing a construction state according to a preferred embodiment of the present invention, Figure 7 shows a plan view showing the degree of order in accordance with a preferred embodiment of the present invention, Figure 8 is a plan view showing a different construction state according to a preferred embodiment of the present invention and Figure 9 is a perspective view showing a state in which the grout material is injected into the injection guide pipe of the present invention.

도 3에 보인바와 같이, 본 발명은 기성으로 제작되는 지지말뚝(50)에 수개의 결합구(21)가 돌출 형성된 고정부재(20)를 설치하고, 상기 고정부재(20)의 결합구(21)로 분사공(11)이 소정간격마다 뚫린 주입호스(10)를 끼움식으로 결합시켜 주입유도관(10)이 지지말뚝(50)의 외주연에 인접되도록 설치하여 지반(500)으로 천공된 천공홀(G)로 삽입되어지게 된다.As shown in FIG. 3, the present invention provides a fixing member 20 in which several coupling holes 21 are protruded to a supporting pile 50 that is manufactured, and the coupling hole 21 of the fixing member 20 is installed. By inserting the injection hose 10 is inserted into the injection hose (10) at predetermined intervals by inserting the injection hole (10) to be adjacent to the outer periphery of the support pile 50 to the perforated ground (500) It is inserted into the drilling hole (G).

상기 고정부재(20)는 수개의 결합구(21)가 돌출 형성되어 주입유도관(10)을 끼움식으로 결합하여 수용하게 되며, 지지말뚝(50)의 외주연으로 끝단부에서 삽입식으로 체결할 수 있게 되며, 소정 간격마다 수개를 설치하여 주입유도관(10)이 지지말뚝(50) 외주연으로 인접되게 고정시키게 된다.The fixing member 20 has a couple of coupling holes 21 are formed to protrude to accommodate the injection guide pipe 10 by fitting, and is fastened by inserting at the end by the outer periphery of the support pile (50) It will be possible, by installing a plurality of predetermined intervals, the injection induction pipe 10 is fixed to be adjacent to the outer periphery of the support pile (50).

여기서 상기 고정부재(20)를 통해 주입유도관(10)을 지지말뚝(50)의 외주연으로 밀착되게 설치함에 따라 기성 제조되어진 말뚝을 지지말뚝(50)으로 사용할 수 있어 경제적인 측면에서 유리하다. 이는 주입유도관이 내재된 지지말뚝(50)을 사용할 경우 말뚝의 제조공정시에 주입호스를 내재시키기 위한 별도의 거푸집을 형성된 상태에서 말뚝의 제조가 이루어짐에 따라 제조단가가 높아 지고 품질면에서 일정수준을 유지 하지 못하는 단점을 해소할 수 있는 것이다. Here, by installing the injection induction pipe 10 in close contact with the outer periphery of the support pile 50 through the fixing member 20, the ready-made pile can be used as the support pile 50, which is advantageous in terms of economy. . This means that when using the support pile 50 in which the injection guide pipe is embedded, the manufacturing cost is increased and the quality is constant as the pile is manufactured in a state in which a separate formwork is formed to embed the injection hose during the manufacturing process of the pile. The disadvantage of not maintaining the level can be eliminated.

상기 주입유도관(10)은 통상의 호스로서, 호스의 외면에 구멍(분사공,11)을 일정한 간격으로 내 외부가 유통될 수 있도록 구성한 것이며, 상기 주입유도관(10)은 통상적으로 시중에서 유통되고 사용되는 것이므로 구성에 대한 구체적인 설명은 생략한다.The injection guide pipe 10 is a conventional hose, the hole (injection hole, 11) on the outer surface of the hose is configured so that the outside can be distributed at regular intervals, the injection guide pipe 10 is usually on the market Since the distribution and use is a detailed description of the configuration is omitted.

특히, 본 발명에 따른 주입유도관(10)은 천공홀(G)로 삽입시에 분사공(11)이 지반측을 향하도록 고정부재(20)로 결합되는 것이 바람직하며, 이에 그라우트재를 고압 주입시에 분사공(11)으로부터 그라우트재가 분사되어 지반내측으로 침투되며 주변지반이 그라우트재에 의해 강화되어 개량됨과 동시에 차수벽(S)을 형성하여 주변지반의 암밀화를 도모할 수 있게 되는 것이다.In particular, the injection induction pipe 10 according to the present invention is preferably coupled to the fixing member 20 so that the injection hole 11 toward the ground side when inserted into the drilling hole (G), the grout material is a high pressure At the time of injection, the grout material is injected from the injection hole 11 and penetrates into the ground, and the surrounding ground is strengthened and improved by the grout material, and at the same time, the order wall S is formed to achieve the darkening of the surrounding ground.

한편, 본 발명에서 사용되는 지지말뚝(50)이 원통형상의 기성 제조된 말뚝을 사용하게 됨에 따라 띠장(201), 앵커(203)나 버팀대(202)와 같은 수평지지부재를 설치하기 위해 수평띠장(201)을 시공시에 지지말뚝(50)의 곡면부위에 부합되도록 배면(31)이 호형 형상으로 형성되고, 전면(32)이 평평한 판형상으로 이루어지며, 중앙에 볼트공(33)이 뚫린 설치부재(30)를 구성하여 상기 설치부재(30)를 지지말뚝(50)으로 볼트에 의해 결합시켜 설치부재(30)의 전면으로 띠장(201)을 용이하게 설치할 수 있게 된다.On the other hand, as the support pile 50 used in the present invention is to use a ready-made cylindrical pile of horizontal band (201), to install a horizontal support member such as anchor 203 or brace 202 horizontal band ( The back surface 31 is formed in an arc shape so as to conform to the curved portion of the support pile 50 at the time of construction 201), and the front surface 32 is formed in a flat plate shape, and a bolt hole 33 is drilled in the center thereof. By constructing the member 30, the mounting member 30 is coupled to the support pile 50 by bolts to facilitate installation of the strip 201 to the front of the mounting member 30.

또한, 지지말뚝(50)과 지지말뚝(50) 사이로 토류판(60)을 설치시에 더욱 용이하게 시공할 수 있도록 도 8에 보인바와 같이 양끝단부가 사선방향으로 절개된 형상(61)의 토류판(60)을 구성하여 흙막이 벽체(100)를 형성할 수도 있도록 하였다. In addition, the earth plate (61) of the shape 61 in which both ends are cut in an oblique direction as shown in Fig. 8 so that the earth plate 60 between the support pile 50 and the support pile 50 can be more easily installed when installed. 60) was made to form the earth wall (100).

이하, 본 발명을 시공방법에 의해 보다 상세히 설명하면,Hereinafter, the present invention will be described in more detail by the construction method,

먼저 천공장치(미도시)를 사용하여 지반으로 천공홀(G)을 형성하고, 천공이 완료되면 천공홀(G)에 본 발명에 따른 수개의 주입유도관(10)이 고정부재(20)에 의해 설치된 지지말뚝(50)을 삽입하게 된다. 이때, 주입유도관(10)은 분사공(11)이 내측 지반면을 향하도록 지지말뚝(50)으로 인접 설치되게 된다.First, forming a drilling hole (G) in the ground using a drilling device (not shown), and when the drilling is completed, several injection guide tubes 10 according to the present invention in the drilling hole (G) to the fixing member (20) Insert the support pile 50 installed by. At this time, the injection guide pipe 10 is installed adjacent to the support pile 50 so that the injection hole 11 toward the inner ground surface.

지지말뚝(50)의 삽입이 완료되면, 지지말뚝(50)과 공벽 사이의 공간을 모래 또는 굴착토사로 되메움한 후, 상기 지지말뚝(50)으로 설치된 주입유도관(10)의 입구부를 통해 그라우트재를 고압으로 주입시킨다. 이때 그라우트재의 주입 압력은 굴토하는 지반(500)의 토양 환경에 따른 주입압으로 그라우트재를 주입하는 것이 바람직하다.When the insertion of the support pile 50 is completed, the space between the support pile 50 and the vacant wall is filled with sand or excavated soil, and then through the inlet of the injection guide pipe 10 installed as the support pile 50. The grout material is injected at high pressure. At this time, the injection pressure of the grout material is preferably injecting the grout material with the injection pressure according to the soil environment of the ground 500 to pit.

여기서, 상기 주입유도관(10)으로 그라우트재를 압력 주입하는 과정은 해당분야에서 통상적으로 사용하고 있는 주입방법으로서 이를 상세히 설명하면, 도 9에서 보인바와 같이 그라우트 분사장치(미도시)를 통해 주입유도관(10)으로 그라우트재를 주입시에 하단부 상.하측에 에어패커(13)가 설치된 주입관(12)을 주입유도관(10)으로 삽입하되, 주입유도관(10)의 하단부까지 삽입시키고, 에어패커(13)로 연결된 공기주입호스(13a)에 공기를 주입시켜 에어패커(13)가 팽창되면서 주입유도관(10)의 소정간격을 밀폐시키게 된다. 상기 에어패커(13)로 인해 주입유도관(10)내측에서 소정간격 밀폐공간이 확보되면 주입관(12)을 상부측에서 인발함과 동시에 주입관(12)으로 그라우트재를 고압 주입시켜 주입관(12)에 형성된 관통구(12a)를 통해 주입유도관(10)으로 그라우트재가 분사되고 다시 소정간격마다 뚫린 주입유도관(10)의 분사공(11)으로부터 지반 내측으로 그라우트재가 고압 분사되게 된다. 이는 주입관(12)에 설치된 에어패커(13)가 주입유도관(10)의 소정공간을 밀폐시켜 고압으로 주입되는 그라우트재의 압력을 손실없이 효율적으로 지반내측으로 그라우트재를 침투시킬 수 있게 되는 것이다. Here, the process of pressure injection of the grout material into the injection induction pipe 10 is described in detail as the injection method commonly used in the art, injection through the grout injection device (not shown) as shown in FIG. When the grout material is injected into the induction pipe 10, the injection pipe 12 having the air packer 13 installed at the upper and lower ends thereof is inserted into the injection induction pipe 10, but is inserted up to the lower end of the injection induction pipe 10. The air packer 13 is expanded by injecting air into the air injection hose 13a connected to the air packer 13 to seal a predetermined interval of the injection guide tube 10. When the sealed space is secured at a predetermined interval inside the injection induction pipe 10 due to the air packer 13, the injection pipe 12 is drawn from the upper side and the grout material is injected at a high pressure into the injection pipe 12 to inject the injection pipe. The grout material is injected into the injection guide pipe 10 through the through hole 12a formed in the 12, and the grout material is injected into the ground from the injection hole 11 of the injection guide pipe 10 drilled at predetermined intervals. . This allows the air packer 13 installed in the injection pipe 12 to seal the predetermined space of the injection guide pipe 10 so as to effectively penetrate the grout material into the ground without losing the pressure of the grout material injected at high pressure. .

상기와 같이 지지말뚝(50)으로 설치되어진 주입유도관(10) 내부에 그라우트재를 고압으로 주입시키면 그라우트재는 주입유도관(10)로부터 소정간격마다 뚫린 분사공(11)을 통해 외부로 유출되어 주변 지반(500)으로 침투되며 지반의 환경을 개량시킴과 동시에 주변지반이 강화되며 차수벽(S)을 형성할 수 있게 된다.When the grout material is injected at a high pressure into the injection guide pipe 10 installed as the support pile 50 as described above, the grout material is discharged to the outside through the injection hole 11 drilled at predetermined intervals from the injection guide pipe 10. It penetrates into the surrounding ground 500 and improves the environment of the ground, and at the same time, the surrounding ground is strengthened and the order walls S can be formed.

본 발명에서는 지지말뚝(20)으로 수개의 주입유도관(10)이 굴착배면과 굴착전면을 향하도록 설치됨에 따라 차수처리를 실시하고자 하는 방향으로 그라우트재를 선택적으로 주입하여 지반을 개량 및 강화시킬 수 있고, 이에 따라 주변지반의 암밀화를 도모할 수 있어 침하 방지에 기여할 수 있게 되는 것이다. 즉, 수개의 주입유도관(10)을 통해 차수하고자 하는 지반 부위에 선택적으로 그라우트재를 주입시켜 지반(500)의 강성을 높일 수 있게 되는 것이다.In the present invention, as the support pile 20 is installed so that several injection induction pipe 10 toward the excavation back and the excavation front, to selectively improve the ground by injecting grout material in the direction to perform the order treatment In this way, it is possible to achieve the darkening of the surrounding ground, thereby contributing to the prevention of settlement. That is, it is possible to increase the rigidity of the ground 500 by selectively injecting grout material into the ground portion to be ordered through the several injection guide pipe (10).

이와 같이 그라우트재를 주입시켜 주변 지반과 함께 차수벽(S)을 형성하게 됨에 따라 지지말뚝(20)의 자립성을 대폭 증대시켜 일반적인 흙막이 공사과정에서 필요로 하는 띠장(201)을 통한 스트러트(버팀대,202))공정을 없앨 수 있어 공기의 단축과 공사비용의 절감효과를 얻을 수 있는 것이다.In this way, as the grout material is injected to form the order wall S together with the surrounding ground, the independence of the support pile 20 is greatly increased, so that the struts (braces, 202) are required through the strip 201 required in the general construction process. The process can be eliminated, which shortens the air and reduces the construction cost.

한편, 본 발명에 따른 흙막이 벽체(100) 시공시에 연약지반의 환경에 따라 띠장(201)을 통한 버팀대(202) 및 앵커(203)를 설치시에 지지말뚝(20)이 원통형상인바, 곡면 부위에 H형강으로 이루어진 띠장(201)을 설치하기가 용이하지 못한 것을 감안하여 중앙으로 볼트공(33)이 관통되고 호형형상의 배면(31)과, 평평한 판형상의 전면(32)을 가지는 설치부재(30)를 구성하여 지지말뚝(20)으로 볼트조립하여 설치하되, 띠장(201)을 하부측에서 받쳐주는 지지대(40)와 함께 띠장(202)과 지지말뚝(50) 사이에 용이하게 설치할 수 있도록 하였으며, 이로 인해 앵커(203)나 버팀대(202)으로부터 띠장(201)에 가해지게 되는 인장력이 지지말뚝(50)으로 골고루 분산 전달되어 견고한 흙막이 벽체(100)를 형성할 수 있게 된다.On the other hand, according to the present invention when the support wall 20 when installing the support 202 and the anchor 203 through the band 201 according to the environment of the soft ground at the time of construction of the wall wall 100 according to the present invention, the cylindrical bar, curved surface In view of the difficulty in installing the band 201 made of H-shaped steel in the site, the bolt hole 33 penetrates to the center and has an arc-shaped back surface 31 and a flat plate-shaped front surface 32. 30 is assembled by installing the bolts to the support pile 20, but can be easily installed between the belt 202 and the support pile 50 together with the support 40 for supporting the strip 201 from the lower side. Due to this, the tensile force applied to the strip 201 from the anchor 203 or the brace 202 is evenly distributed to the support pile 50 to form a solid soil wall 100.

상술한 바와 같이 본 발명에 따른 흙막이 공법은 소형의 천공홀(G)로도 충분한 차수 및 흙막이 효과를 얻을 수 있어 협소한 공간에서의 작업의 용이성과 주변 구조물에 대한 근접공사가 가능하므로써 대지의 극대적인 효율성을 가지며, 주변지반의 암밀 효과까지 얻을 수 있어 침하에 대한 안전성을 확보할 수 있다는 이점이 있다. 또한 공사기간의 단축과 공사비의의 절감 효과를 얻을 수 있다.As described above, the earthquake method according to the present invention can obtain a sufficient degree of order and the earthquake effect even with a small drilling hole (G), so that the ease of work in a narrow space and the close construction of the surrounding structure are possible, thereby providing a maximum of the earth. It has the advantage that it is possible to obtain the dark effect of the surrounding ground to ensure safety against settlement. In addition, the construction period can be shortened and the construction cost can be reduced.

한편, 지지말뚝(50)은 필요로 하는 강성의 크기에 따라 미리 내부에 인장부재(철근, 미도시)가 매설되며, 원심력에 의해 공장제작되는 통상적인 말뚝부재로서 중간에 일정크기의 중공부(51)가 형성되는데 이는 현장에서 지지말뚝(50)의 연접시공으로 인해 벽체가 형성된 후 일부 구멍을 통하여는 굴착과정에서 벽체의 거동을 검증하는 지중경사계의 설치구멍으로 활용할 수 있어 시공관리 및 비용측면에서도 매우 유리하다.On the other hand, the support pile 50 is a tension member (reinforcement, not shown) is embedded in advance in accordance with the size of the rigidity required, and the hollow portion of a predetermined size in the middle as a conventional pile member manufactured by centrifugal force ( 51) is formed, which can be used as an installation hole of the underground inclinometer to verify the behavior of the wall during the excavation process after the wall is formed due to the joint construction of the support pile 50 in the field construction and cost aspects Is also very advantageous.

또한, 본 발명은 지지말뚝(50)에 설치된 주입유도관(10)을 통하여 굴착 배면으로 고압주입하여 차수개량체를 형성하거나 지반을 개량할 수 있는 장비(천공 및 교반, 주입, 분사장비 등)를 이용하여 Soil cement 기둥 등과 같은 차수개량체를 형성하므로 배면지반을 강화하여 굴착과정에서 배면측의 침하를 방지할 수 있고, 따로이 토류판을 설치하지 않아도 지지말뚝(20) 사이의 토사가 굴착측면으로 유실되지 않으므로 인접구조물의 변상방지에 매우 효과적이다.In addition, the present invention is a high-pressure injection into the excavation back through the injection induction pipe 10 installed on the support pile 50 to form the order improver or to improve the ground (for drilling and stirring, injection, injection equipment, etc.) By forming the order-improving body such as Soil cement column by using so as to reinforce the back ground to prevent settlement of the back side during the excavation process, the soil between the support pile 20 to the excavation side without installing the earth plate separately Since it is not lost, it is very effective in preventing reparation of adjacent structures.

상술한 바와 같은, 본 발명의 바람직한 실시예에 따른 지지말뚝과 지반보강을 이용한 흙막이벽체 및 그 시공방법을 상기한 설명 및 도면에 따라 도시하였지만, 이는 예를 들어 설명한 것에 불과하며 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 다양한 변화 및 변경가능하다는 것을 이 분야의 통상적인 기술자들은 잘 이해할 수 있을 것이다.As described above, although the support wall and the earth retaining wall using the ground reinforcement according to a preferred embodiment of the present invention and a construction method thereof are shown in accordance with the above description and drawings, this is merely described as an example and the technical idea of the present invention. Those skilled in the art will appreciate that various changes and modifications can be made without departing from the scope of the invention.

도 1은 종래의 H파일과 토류판을 이용한 시공방법의 보인 평면도.1 is a plan view showing a construction method using a conventional H-pile and earth plate.

도 2는 종래의 C.I.P 공법을 이용한 흙막이 구성을 보인 평면도.Figure 2 is a plan view showing a concave structure using a conventional C.I.P method.

도 3은 본 발명의 실시예를 보인 사시도.3 is a perspective view showing an embodiment of the present invention.

도 4는 본 발명의 실시예에 따라 시공된 흙막이벽체를 보인 사시도.Figure 4 is a perspective view of the retaining wall constructed in accordance with an embodiment of the present invention.

도 5는 본 발명의 바람직한 실시예에 따른 시공과정을 개략적으로 보인 평면도.5 is a plan view schematically showing a construction process according to a preferred embodiment of the present invention.

도 6은 본 발명의 바람직한 실시예에 따른 시공상태를 보인 측단면도.Figure 6 is a side cross-sectional view showing a construction state according to a preferred embodiment of the present invention.

도 7은 본 발명의 바람직한 실시예에 따라 차수상태를 보인 평면도.7 is a plan view showing the order state in accordance with a preferred embodiment of the present invention.

도 8은 본 발명의 바람직한 실시예에 따라 다른 시공상태를 보인 평면도.8 is a plan view showing another construction state according to a preferred embodiment of the present invention.

도 9는 본 발명의 주입유도관으로 그라우트재가 주입되는 상태를 보인 사시도.9 is a perspective view showing a state in which the grout material is injected into the injection induction pipe of the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

500 : 지반 201 : 띠장 202 : 버팀대 203 : 앵커500: ground 201: strip 202: brace 203: anchor

10 : 주입유도관 11 : 분사공 20 : 고정부재 21 : 결합구 DESCRIPTION OF SYMBOLS 10 Injection induction pipe | tube 11: Injection hole 20: Fixing member 21: Coupling tool

30 : 설치부재 31 : 배면 32 : 전면 33 : 볼트공30: mounting member 31: rear 32: front 33: bolt hole

40 : 지지대 50 : 지지말뚝 51 : 중공부 60 : 토류판 40: support 50: support pile 51: hollow portion 60: earth plate

61 : 사선 형상의 절개 61: oblique cut

Claims (3)

기성말뚝을 이용한 흙막이 벽체에 있어서, 기성으로 제작되는 원통형상의 지지말뚝(50)에 수개의 결합구(21)가 돌출 형성된 고정부재(20)가 소정 간격으로 설치되고, 상기 고정부재(20)의 결합구(21)로 분사공(11)이 소정간격마다 뚫린 수개의 주입유도관(10)을 끼움식으로 결합시켜 주입유도관(10)이 외주연으로 인접되도록 설치된 지지말뚝(50)을 천공홀(G)로 삽입하고, 주입유도관(10)을 통해 그라우트재를 주입시켜 지지말뚝(50)의 주변지반을 강화시켜 차수벽(S)을 형성하도록 하는 것을 특징으로 하는 지지말뚝과 지반보강을 이용한 흙막이벽체.In the retaining wall using a ready-made pile, the fixing member 20 is formed at predetermined intervals in which a plurality of coupling holes 21 protruding from the cylindrical support pile 50 is made of a ready-made, the fixed member 20 of the The injection hole 11 is inserted into the coupling hole 21 by inserting several injection guide pipes 10 drilled at predetermined intervals to drill the support pile 50 installed so that the injection guide pipes 10 are adjacent to the outer circumference. The support pile and the ground reinforcement, characterized in that to insert into the hole (G), to inject the grout material through the injection guide pipe 10 to strengthen the peripheral ground of the support pile 50 to form the order wall (S) Used wall wall. 제 1항에 있어서, 원통형상의 지지말뚝(50)에 띠장(201)과 같은 수평지지부재의 설치가 용이하도록 지지말뚝(50)의 외주연에 부합되게 배면(31)이 호형 형상으로 형성되고, 전면(32)이 평평한 판형상으로 이루어지며, 중앙에 볼트공(33)이 뚫린 설치부재(30)를 결합한 것을 특징으로 하는 지지말뚝과 지반보강을 이용한 흙막이벽체. According to claim 1, wherein the rear surface 31 is formed in an arc shape to match the outer periphery of the support pile 50 to facilitate the installation of a horizontal support member such as the band 201 to the cylindrical support pile 50, The front wall 32 is made of a flat plate shape, and the support wall and the earth retaining wall using the ground reinforcement, characterized in that the coupling member 30, the bolt hole 33 is drilled in the center. 기성말뚝에 의해 흙막이 벽체를 형성하는 시공방법에 있어서, In the construction method of forming the earth wall by the ready-made pile, 지반으로 천공홀(G)을 형성하고, 천공이 완료되면 천공홀(G)에 수개의 주입 호스(10)가 고정부재(20)에 의해 설치된 지지말뚝(50)을 삽입하며, Forming the drilling hole (G) in the ground, and when the drilling is completed, inserting the support pile 50 installed by the fixing member 20 several injection hoses 10 in the drilling hole (G), 상기 지지말뚝(50)의 삽입이 완료되면, 지지말뚝과 공벽 사이의 공간을 모래 또는 굴착토사로 되메움한 후, 상기 지지말뚝(50)으로 설치된 주입유도관(10)의 입구부를 통해 그라우트재를 고압으로 주입하여 주입유도관(10)으로부터 소정간격마다 뚫린 분사공(11)을 통해 외부로 유출되어 주변 지반(500)으로 침투되며 지반의 환경을 개량시켜 지반의 강성을 높임과 동시에 차수벽(S)을 형성할 수 있도록 한 것을 특징으로 하는 지지말뚝과 지반보강을 이용한 흙막이벽체 시공방법.When the insertion of the support peg 50 is completed, the support peg and then backfilled a space between gongbyeok as sand or excavated earth and sand, grout through the inlet portion of the support peg to induce infusion installed 50 pipe 10 re- Is injected at high pressure and flows out through the injection hole 11 drilled at predetermined intervals from the injection induction pipe 10 to penetrate into the surrounding ground 500, and improves the environment of the ground to increase the stiffness of the ground and at the same time the order wall ( S) construction method using the support pile and ground reinforcement, characterized in that to form a.
KR1020080104980A 2008-10-24 2008-10-24 Earth retaining wall and it's construction method using the precast pile and ground reinforcement KR101078080B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
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KR20190062809A (en) * 2017-11-29 2019-06-07 한요섭 Cantilever Earth Retaining Wal1 Construction Method Using PHC Pile And Key Block
CN109914431A (en) * 2019-04-08 2019-06-21 中国铁建大桥工程局集团有限公司 A kind of novel prefabrication cast-in-place combination Row Piles Supporting Structure
KR102113291B1 (en) * 2018-12-21 2020-05-20 염상용 Soil retaining wall using phc pile and construction method thererof

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KR20190062809A (en) * 2017-11-29 2019-06-07 한요섭 Cantilever Earth Retaining Wal1 Construction Method Using PHC Pile And Key Block
KR102113291B1 (en) * 2018-12-21 2020-05-20 염상용 Soil retaining wall using phc pile and construction method thererof
CN109914431A (en) * 2019-04-08 2019-06-21 中国铁建大桥工程局集团有限公司 A kind of novel prefabrication cast-in-place combination Row Piles Supporting Structure

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