KR20030089398A - wale for construction method for defending earth using prestress - Google Patents

wale for construction method for defending earth using prestress Download PDF

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Publication number
KR20030089398A
KR20030089398A KR1020020077210A KR20020077210A KR20030089398A KR 20030089398 A KR20030089398 A KR 20030089398A KR 1020020077210 A KR1020020077210 A KR 1020020077210A KR 20020077210 A KR20020077210 A KR 20020077210A KR 20030089398 A KR20030089398 A KR 20030089398A
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South Korea
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prestress
shaped steel
earth
construction
wale
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KR1020020077210A
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Korean (ko)
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KR100477195B1 (en
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황문삼
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황문삼
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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
    • 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
    • E02D2250/0046—Production methods using prestressing techniques

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

PURPOSE: A single wale for a sheeting method by prestress is provided to stabilize structurally without the sectional loss, to manufacture simply and easily, and to heighten economical efficiency using the existing H-beam. CONSTITUTION: The single wale for a sheeting method by prestress comprises the steps of forming stepped parts(2,2') on both ends of an H-beam(1) which contains a connection flange(9) whose height is twice width of upper and lower flanges(8,8'), fixing a cable(4) on the intermediate of the H-beam(1) provided with stepped parts(2,2') by both brackets(3,3'), forming many gusset plates(5,5') and vertical finishing plates(6,6') on both stepped parts(2,2') of the H-beam(1) and forming many coupling holes(7,7') on the finishing plates(6,6').

Description

프리스트레스에 의한 흙막이 공법용 단띠장재 {wale for construction method for defending earth using prestress}Prestressing Shortbands {wale for construction method for defending earth using prestress}

본 발명은 토목건설 현장에서 굴착된 흙벽이 토압에 의한 처짐 및 붕괴가 일어나지 않게 한 흙막이 공법용 단띠장재에 관한 것으로, 특히 매우 견고하면서도 제작이 용이하고 구조적인 단면손실이 거의 없으며, 기성제품을 가공하여 생산하므로 매우 경제적인 흙막이 공법용 단띠장재이다.The present invention relates to a short strip material for earthquake construction method that the earth wall excavated at earthworks construction site does not cause sag and collapse due to earth pressure. Especially, it is very robust and easy to manufacture, and there is almost no structural cross-sectional loss. It is a very economical short-walled material for construction as it is produced by

기존의 흙막이 공사는 흙벽 또는 암벽에 일체로 타설 형성하는 콘크리트 영구 흙막이와, 굴착 공사시에만 흙벽 또는 암벽이 무너지는 것을 방지하기 위해 설치하였다가 공사완료 후 이를 해체하는 가설 흙막이 공사로 구분된다.Existing earthquake construction is divided into a concrete permanent earthquake that is integrally formed on the earth wall or rock wall, and a temporary earthquake project that is installed to prevent the earth wall or rock wall from collapsing only during excavation work and then dismantled after completion of construction.

일반적으로 가설 흙막이 공사시에는 임의 간격으로 H-형강 지주를 세우고 그 사이에 토류판을 적층 삽입하여 흙벽 또는 암반벽을 받쳐지게 함과 동시에 그 H-형강 지주를 벽체에 고정시키기 위해 벽과 벽 사이에 다수의 버팀목(Strut)을 설치하거나, 어스앵커를 지주에 고정 설치하고 이를 브라켓트에 의해 H-형강 지주에 견고하게 고정하여 토류압을 견디게 구성하였다.In general, during temporary construction, H-beam struts are erected at random intervals, and the earth plate is inserted between them to support the earth wall or rock wall, and the H-beam struts are fixed between the wall and the wall. A number of struts were installed or the earth anchors were fixedly installed on the props, and the brackets were firmly fixed to the H-beams by the brackets to endure the earth pressure.

그러나, 전기한 기존의 흙막이 공법은 H-형강 지주를 횡방향으로 길게 설치하여야 하므로 별도의 중장비를 사용하여야 되는 경제적인 부담과 번거로움이 있으며, 버팀목이 어스앵커 등 필요이상의 재료가 투입되어 공사비 상승의 원인이 되고 있을 뿐만 아니라, 스트러트의 사용방식은 중앙 파일의 간섭으로 움직임에 많은 제약을 받게 되어 공기 및 경제적 손실을 초래하는 문제가 있는 것이다.However, the existing retaining method described above requires the installation of long H-beam struts in the lateral direction, so there is an economic burden and hassle to use a separate heavy equipment. In addition to the cause of the problem, the use of the strut is a problem that causes a lot of restrictions on movement due to the interference of the central pile, causing air and economic losses.

따라서, 본 발명 출원인에 의해 출원되어 등록된 특허등록 제188465호와 같이, 기존의 버팀목(Strut) 대신 띠장재에 케이블을 장착한 겹띠장재를 설치하여 양단부에 소정의 프리스트레싱(PreStressing)을 가하므로, 여기서 발생되는 프리스트레스 모멘트를 이용하여 토압에 저항하도록 하는 공법을 안출한 바 있다.Therefore, as in Patent Registration No. 188465 filed and registered by the applicant of the present invention, a prestress is applied to both ends by installing a pleated strip material in which a cable is mounted on the strip material instead of the existing strut. The method to resist earth pressure by using the prestress moment generated here has been devised.

그러나, 전기한 바와 같은 겹띠장재에 의한 시공공법에 따른 겹띠장재는 띠장재에 겹띠장재를 시공하기 위한 대량의 볼트 및 너트를 필요로 하므로 그 작업시간이 매우 많이 소요됨은 물론 시공전에 미리 결합공을 띠장재 및 겹띠장재에 미리 천공하는 준비공정을 필요로 하면서도 매우 정밀시공을 요하는 것이며,However, since the above-mentioned construction method by the construction method using the double stripe material requires a large amount of bolts and nuts for constructing the double stripe material on the stripe material, the work time is very high and the joining hole is required before construction. It requires very precise construction while requiring a preliminary preliminary drilling process on the strip material and the double strip material.

겹띠장재의 사용으로 인하여 구조물 벽체 시공시 간섭이 되고, 좌굴방지용 누름 브라켓을 별도로 설치하여야 하는 번거로움이 있는 것이다.Due to the use of double banding materials, there is an interference when constructing the wall of the structure, and there is a hassle to install a buckling preventing press bracket separately.

따라서, 본 발명 출원인에 의해 안출된 2001년 특허출원 제35278호에 의해, 겹띠장재를 사용하지 아니하고 띠장재에 직접 프리스트레스를 가하는 케이블 또는 강봉을 장착하여 그 양단부에 유압에 의한 프리스트레스를 가하므로 띠장재에 직접적인 프리스트레스 모우멘트가 발생하여 토압을 분산시키는 공법을 채택하므로서,Therefore, according to the 2001 patent application No. 35278 issued by the applicant of the present invention, without using a laminar strip material, it is equipped with a cable or steel rod that directly applies a prestress to the strip material, so that prestress by hydraulic pressure is applied to both ends thereof. As a prestress moment is generated directly in the air and the earth pressure is dispersed,

종래의 버팀보 또는 앵커의 간격을 넓힐 수 있음은 물론, 굴착벽면에 수동토압을 유발시킴으로서 토류벽의 변형을 억제하여 처짐 및 변형을 방지하고 주변 지반의 침하 및 변형을 최소화하며, 종래 공법보다 제작 및 설치가 용이하고, 강재의 사용이 줄어 경제적이면서도 작업 능률이 향상되고, 양질의 공사가 가능함은 물론 버팀보(Strut)의 간격이 넓어지므로 시공속도가 매우 빠른 프리스트레스에 의한 흙막이 공법 및 이에 사용되는 띠장재를 제공함에 본 발명의 목적이 있는 것이다.It is possible to widen the distance of conventional braces or anchors, and also to induce manual earth pressure on the excavating wall surface to suppress the deformation of the earth wall to prevent sagging and deformation, to minimize settlement and deformation of the surrounding ground, and to manufacture and install more than conventional methods. It is easy to use, the use of steel is reduced, economical and work efficiency is improved, high-quality construction is possible, and the interval between struts is widened. It is an object of the present invention to provide.

그러나, 상기한 프리스트레스 수단을 갖는 띠장재 또한 별도로 특수 제작된 형강의 플랜지 내측에 보강플랜지를 각각 용접 형성하여야 하는 비경제적인 문제점과, 종래의 겹띠장재에 비해 단면손실이 커서 구조적으로 취약한 문제점이 있는 것이다.However, the strip member having the above prestress means is also an economical problem that each weld flange is formed inside the flange of the specially manufactured section steel, and the structural loss is large due to the large cross-sectional loss compared to the conventional laminated strip member. .

즉, 기존의 H-형강을 이용하여 제작하는 것이 아니라, 단면손실에 따른 보상단면으로 H-형강의 연결플랜지를 두껍게 형성한 특수 형강을 사용하여야 하므로 그 형강의 제작에 따른 비용의 과다소요와,In other words, rather than using the existing H-shaped steel, instead of using a special shaped steel thickening the connection flange of the H-shaped steel as a compensation section according to the cross-sectional loss, excessive cost of the production of the steel,

단면손실의 보상차원에서 용접하여야 하는 보강플랜지의 작업과정 또한 매우 긴 길이의 보강플랜지를 H-형강의 플랜지 내측면에 견고하게 용접하여야 하는 것이므로 그 작업시간의 과다소요에 따른 대량생산의 저해요소가 되는 것이다.The work process of reinforcing flanges to be welded in order to compensate for the loss of section also requires that the reinforcing flanges of very long length should be welded firmly to the inner surface of the flange of the H-shaped steel. Will be.

본 발명은 전기한 바와 같은 문제점을 제거코자 안출된 것으로서, 넓은 높이의 연결플랜지가 형성된 기성 H-형강의 양단에 단차부를 형성하고, 형강의 일면에는 브라켓에 의한 케이블을 고정하며, 형강의 양측단에는 다수의 보강판을 형성함으로서,The present invention has been made to eliminate the problems described above, forming a stepped portion on both ends of the ready-made H-shaped steel with a connection flange of a wide height, fixing the cable by the bracket on one side of the steel, both sides of the steel By forming a number of reinforcement plates,

겹띠장재와 같은 단면을 유지하면서도 단면손실이 거의 없으므로 구조적으로 매우 안정되고, 겹띠장재와 같은 볼트, 너트에 의한 결합수단이나 용접에 의한 보강 플랜지 등이 전혀 없으므로 제작이 매우 단순하고 용이하며, 기존의 H-형강을이용하여 제작하므로 매우 경제적인 효과가 있는 프리스트레스에 의한 흙막이 공법용 단띠장재를 제공함에 본 발명의 목적이 있는 것이다.It is structurally very stable because there is almost no cross-sectional loss while maintaining the same cross-section as the double strip material, and it is very simple and easy to manufacture since there is no joining means by bolts and nuts or reinforcing flange by welding. It is an object of the present invention to provide a short strip material for the construction method using pre-stress having a very economical effect by using the H-shaped steel.

도 1은 본 발명 단띠장재의 전체사시도1 is an overall perspective view of the present invention short band

도 2는 본 발명 단띠장재의 정면도Figure 2 is a front view of the present invention short band

도 3은 본 발명 단띠장재의 시공상태 단면도3 is a cross-sectional view of the construction state of the present invention

도 4는 본 발명 단띠장재를 이용한 시공전체도Figure 4 is a whole construction using the present invention short band

* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

1 : H-형강2,2' : 단차부1: H-shaped steel 2,2 ': step

3,3' : 브라켓4 : 케이블3,3 ': Bracket 4: Cable

5,5' : 보강판6,6' : 마감판5,5 ': Reinforcement plate 6,6': Finishing plate

7,7' : 결합공8,8' : 상하 플랜지7,7 ': Mating hole 8,8': Upper and lower flange

9 : 연결플랜지10 : 파일9: connection flange 10: file

11,11' : 버팀보11,11 ': brace

이하, 본 발명의 바람직한 실시예를 설명한다.Hereinafter, preferred embodiments of the present invention will be described.

도 1은 본 발명 단띠장재의 전체사시도이고, 도 2는 본 발명 단띠장재의 정면설명도이다.1 is an overall perspective view of the present invention of the short strip material, Figure 2 is a front explanatory view of the short strip material of the present invention.

상,하 플랜지(8)(8')의 폭보다 연결플랜지(9)의 높이가 2배이상인 일정길이의 H-형강(1) 양단부에 단차부(2)(2')를 형성하고, 그 단차부(2)(2')가 형성된 H-형강(1)의 중간부에는 양측 브라켓(3)(3')에 의해 케이블(4)을 고정하며,Stepped portions (2) (2 ') are formed at both ends of the H-shaped steel (1) of a predetermined length such that the height of the connecting flange (9) is more than twice the width of the upper and lower flanges (8) and (8'). The cable 4 is fixed to the middle portion of the H-shaped steel 1 having the stepped portions 2 and 2 'by both brackets 3 and 3',

H-형강(1)의 양측 단차부(2)(2')에는 다수의 보강판(5)(5')과 수직의 마감판(6)(6')을 형성하되, 그 마감판(6)(6')는 다수의 결합공(7)(7')을 형성하여 구성된 것이다.On both side step portions 2, 2 'of the H-shaped steel 1, a plurality of reinforcing plates 5, 5' and a vertical finishing plate 6, 6 'are formed, and the finishing plate 6 (6 ') is formed by forming a plurality of coupling holes (7) (7').

도면중 미설명 부호 10은 파일, 11,11' 버팀보이다.In the figure, reference numeral 10 denotes a file, 11,11 'brace.

이상과 같은 구성에 의한 본 발명의 작용을 첨부도면에 의해 보다 상세히 설명하면 다음과 같다.Referring to the operation of the present invention by the above configuration in more detail by the accompanying drawings as follows.

먼저, 띠장재에 의한 흙막이 공법을 도 4의 시공상태도에 의해 개략적으로 설명하여 보면,First, by explaining the construction method of the earthen board using the strip material by the construction state diagram of FIG.

굴착용 파일(10)을 세로방향으로 다수 삽입하고, 그 파일(10)의 전면에 가로방향으로 본 발명 단띠장재를 설치한 후, 그 연결모서리를 버팀보(11)(11')에 의해 지지하며, 본 발명 단띠장재의 표면 중간에 형성된 프리스트레스 발생수단의 케이블(4)을 유압에 의해 인장하여 단띠장재에 직접 모멘트가 발생되게 함으로서, 단띠장재에 발생하는 프리스트레스 모멘트에 의해 띠장재가 토류압에 저항하게 시공하는 것이다.After inserting a large number of excavation piles 10 in the longitudinal direction, and installing the present invention in the transverse direction on the front of the pile 10, the connecting edges are supported by the braces 11, 11 '. By tensioning the cable 4 of the prestress generating means formed in the middle of the surface of the end strip of the present invention by hydraulic pressure, the moment is generated directly on the end strip, the strip is resisted to the earth pressure by the prestress moment generated in the end strip. It is to construct.

따라서, 도 3의 시공단면도와 같이,Therefore, as shown in the construction cross section of FIG.

상,하플랜지(8)(8')의 폭보다 연결플랜지(9)의 높이가 2배이상 넓은 H-형강(1)을 주재로 한 단띠장재에 의해 기존의 띠장재 역할은 물론 겹띠장재의 역할을 동시에 수행하므로 구조적으로 매우 안정된 것이며, 하나의 H-형강(1)에 의해 단면손실이 전혀 없는 단띠장재로 이루어져 종래 볼트 결합에 의해 시공된 겹띠장재에 비해 보다 간단한 제작은 물론 볼트 및 너트의 이완에 따른 유지관리의 필요성이 전혀 없는 것이다.It is not only the role of the existing banding material but also of the double banding material by the short band material mainly made of H-shaped steel (1), which has a height of more than twice as wide as the width of the upper and lower flanges (8) and (8 '). It plays a role at the same time, so it is structurally very stable, and consists of a single band material with no cross-sectional loss by one H-shaped steel (1). There is no need for maintenance due to relaxation.

이렇게 시공되어진 상태에서 상기한 브라켓(3)(3')에 의해 고정된 케이블(4)을 유압에 의해 잡아당겨 이에 의한 프리스트레스 모멘트가 H-형강(1)에 직접 발생되게 함으로서, 토류압으로부터 보다 안정되고 견고하게 지탱할 수 있는 것이다.In this state of construction, the cable 4 fixed by the brackets 3 and 3 'is pulled by hydraulic pressure so that the prestress moment is generated directly on the H-shaped steel 1, thereby reducing the pressure from the earth pressure. It can be stable and firmly supported.

또한, 상대적으로 취약한 부분인 H-형강(1)의 양단부에는 다수의 보강판(5)(5')을 형성하여 이에 의해 그 취약한 문제점을 보상케 하고,In addition, by forming a plurality of reinforcing plates (5) (5 ') at both ends of the relatively weak portion of the H-shaped steel (1), thereby compensating for the weak problem,

H-형강(1) 양단의 마감판(6)(6')에는 다수의 결합공(7)(7')을 형성하여, 다수의 단띠장재를 동시에 연속하여 시공하는 경우 각각의 단띠장재를 서로 볼트, 너트 등의 결합수단에 의해 연결할 수 있게 한 것이다.A plurality of coupling holes (7) and (7 ') are formed in the closing plates (6) and (6') at both ends of the H-shaped steel (1). It is to be connected by a coupling means such as bolts, nuts.

따라서, 기존의 H-형강(1)을 이용하여 제작하므로 특수 형강의 생산에 따른 과다한 비용의 지출이 없으면서도 볼트, 너트 또는 용접에 의해 생산하는 것이 아니라, 높이가 높은 기존의 형강을 절단하여 생산하는 것으로서, 그 제작시간이 현저히 단축되므로 대량 생산에 매우 적합한 것이다.Therefore, since it is manufactured by using the existing H-shaped steel (1), it is not produced by bolts, nuts, or welds, but is produced by cutting the existing high-profile steel without the excessive cost of producing the special-shaped steel. As the production time is significantly shortened, it is very suitable for mass production.

또한, 기존의 겹띠장재를 결합하기 위한 결합공이 전혀 없으므로 단면손실이 전혀 없어 보다 안정된 구조적 설치가 가능한 것이다.In addition, since there is no coupling hole for joining the existing pleated sheet material, there is no cross-sectional loss at all, and thus more stable structural installation is possible.

이상과 같은 본 발명 프리스트레스에 의한 흙막이 공법용 단띠장재는, 겹띠장재와 같은 단면을 유지하면서도 단면손실이 거의 없으므로 구조적으로 매우 안정되고, 겹띠장재와 같은 볼트, 너트에 의한 결합수단이나 용접에 의한 보강 플랜지 등이 전혀 없으므로 제작이 매우 단순하고 용이하며, 기존의 H-형강을 이용하여 제작하므로 매우 경제적인 효과가 있는 것이다.As described above, the short strip material for earthquake construction by the prestress of the present invention is very structurally stable because there is almost no cross-sectional loss while maintaining the same cross section as the double strip material, and is reinforced by coupling means or welding by bolts and nuts such as the double strip material. Since there is no flange at all, it is very simple and easy to manufacture, and it is very economical because it is manufactured using existing H-shaped steel.

Claims (1)

상,하 플랜지(8)(8')의 폭보다 연결플랜지(9)의 높이가 2배이상인 일정길이의 H-형강(1) 양단부에 단차부(2)(2')를 형성하고, 그 단차부(2)(2')가 형성된 H-형강(1)의 중간부에는 양측 브라켓(3)(3')에 의해 케이블(4)을 고정하며,Stepped portions (2) (2 ') are formed at both ends of the H-shaped steel (1) of a predetermined length such that the height of the connecting flange (9) is more than twice the width of the upper and lower flanges (8) and (8'). The cable 4 is fixed to the middle portion of the H-shaped steel 1 having the stepped portions 2 and 2 'by both brackets 3 and 3', H-형강(1)의 양측 단차부(2)(2')에는 다수의 보강판(5)(5')과 수직의 마감판(6)(6')을 형성하되, 그 마감판(6)(6')는 다수의 결합공(7)(7')을 형성하여 됨을 특징으로 하는 프리스트레스에 의한 흙막이 공법용 단띠장재.On both side step portions 2, 2 'of the H-shaped steel 1, a plurality of reinforcing plates 5, 5' and a vertical finishing plate 6, 6 'are formed, and the finishing plate 6 6 ') is a short strip material for pre-stress earthwork method characterized in that the formation of a plurality of coupling holes (7) (7').
KR10-2002-0077210A 2002-12-06 2002-12-06 wale for construction method for defending earth using prestress KR100477195B1 (en)

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KR100830180B1 (en) * 2006-12-12 2008-05-16 굿럭건설 주식회사 Free stress structure for fabric reinforcement
KR100987948B1 (en) * 2008-02-28 2010-10-18 연세대학교 산학협력단 Construction method for underground structure using prestressed beam and development structure, saddle used in the same
KR101026583B1 (en) * 2011-01-17 2011-04-04 최현규 A wale system for supporting earth retaining wall
KR101129017B1 (en) * 2011-10-05 2012-03-23 주식회사 비앤비엠스틸 Steel strip-strut structurte with its strip having wider width for underground retaining wall
KR101136895B1 (en) * 2011-11-09 2012-04-20 반창호 Arch style wale structure
WO2012165669A1 (en) * 2011-05-27 2012-12-06 (주)피에스테크 Earth retaining temporary structure and construction method for same
KR20150075433A (en) * 2013-12-25 2015-07-06 주식회사 포스코 Steel tube combination type wider width wale

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KR102682744B1 (en) 2023-04-10 2024-07-08 주식회사 현 이앤씨 Damage-free assembled beam and prestressing apparatus for retaining wall using the same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100830180B1 (en) * 2006-12-12 2008-05-16 굿럭건설 주식회사 Free stress structure for fabric reinforcement
KR100987948B1 (en) * 2008-02-28 2010-10-18 연세대학교 산학협력단 Construction method for underground structure using prestressed beam and development structure, saddle used in the same
KR101026583B1 (en) * 2011-01-17 2011-04-04 최현규 A wale system for supporting earth retaining wall
WO2012165669A1 (en) * 2011-05-27 2012-12-06 (주)피에스테크 Earth retaining temporary structure and construction method for same
KR101129017B1 (en) * 2011-10-05 2012-03-23 주식회사 비앤비엠스틸 Steel strip-strut structurte with its strip having wider width for underground retaining wall
KR101136895B1 (en) * 2011-11-09 2012-04-20 반창호 Arch style wale structure
KR20150075433A (en) * 2013-12-25 2015-07-06 주식회사 포스코 Steel tube combination type wider width wale

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