Abstract:
A reinforced soil pier and a bridge construction method using the same are provided to secure constructability and economical efficiency by manufacturing and constructing a pier quickly using a soil body with reinforced tensile resistance against applied load. A reinforced soil pier includes a column body(100) filled with soils(120) prestressed axially to increase tensile resistance by load in a circular pipe(110), and a foundation(200) formed on the lower part of the column body to support the column body. A bridge construction method using a reinforced soil pier comprises the steps of: leveling the ground where a reinforced soil pier is to be constructed and performing pit excavation; forming a foundation by placing concrete in a form for a foundation; installing a circular pipe on the foundation to make the bottom of a circular pipe set to the upper part of the foundation to the appointed height to set a tension member upward; filling up the inside of the circular pipe with soils including sand; installing an upper support plate(140), and forming anchor holes and installing anchorages(141,142) on the upper support plate to make the other end of the upward extended tension member tensed and anchored; installing girders between a pier and an abutment; and installing a bridge slab on the upper side of the girders.
Abstract:
A geobag block using recycled aggregates in a gravity retaining wall system and a method for constructing the gravity retaining wall system by using geobag are provided to recycle construction wastes by employing recycled aggregates for the gravity retaining wall. A geobag block(2) has a hexahedron shape and a volume above 1 cubic meters. The geobag block(2) includes polypropylene. The friction angle of geobag blocks(2) is in the range of 45 degrees to 60 degrees. Recycled aggregates (waste concrete + waste ASCON)(3), having the maximum diameter of 100mm, are filled in the geobag block. A retaining wall having the height of 5mm or less is constructed by employing a recycled aggregate having particle size of 40mm or less and a friction angle in the range of 45 degrees to 60 degrees.
Abstract:
A method for preventing collapse of an embankment by using a culvert concrete sleeve is provided to protect the embankment against flood by guiding a subsidence interface from a boundary of an inner soil body and an outer soil body. A culvert(100) is supported by a pile foundation(140), and the width of a lower plate of the culvert is expanded to increase the width(B2) of an inner soil body(120). An outer soil body(130) is contacted to the inner soil body, and a new subsidence interface(B) is formed by moving the subsidence interface from a concrete side wall into the outer soil body. Shear strength of the new subsidence interface is increased by engaging the inner soil body with the outer soil body, and earth is compacted by moving the outer soil body from a side wall(110) of the culvert. The collapse of an embankment is prevented by restricting subsidence of the outer soil body or the inner soil body. A sleeve(200) is installed to be projected horizontally from both side walls, and manufactured with the culvert or by using mechanical attachment using an anchor bolt.
Abstract:
PURPOSE: Provided is a block for drain formed by using EPS(expanded polystyrene), which is light and has excellent draining ability and dust-absorption and can protect construction. CONSTITUTION: The block for drain comprises: a main body(20) forming a plurality of grooves(21) on the front thereof and traverse drain holes(22) formed from the grooves(21) to the backside; nonwoven fabrics(28) inserted in the grooves(21) of the main body(20); a longitudinal drain hole(23) pierced from the top to the bottom of the main body(20) and connected with the traverse drain holes(22); a projection part(24) containing the open hole of the longitudinal drain hole(23), which is projected upward on the top of the main body(20); a concave part(25) in which the projection part(24) is inserted, which contains the open hole of the longitudinal drain hole(23) and formed on the bottom of the main body(20). The main bodies(20) are installed by being arranged sequentially.
Abstract:
본 발명은 순환골재를 이용한 중력식 옹벽용 지오백 블록 및 이에 의한 중력식 옹벽의 시공방법에 관한 것으로 지오백 블록에 의하여 축조되는 중력식 옹벽의 높이는 5~12m이고, 지오백 블록은 지오백과, 그리고 최대입경이 100mm를 초과하지 않으면서 최대40mm를 기본으로 한 혼합골재를 지오백에 충진시킨 블록이다. 지오백은 폴리프로필렌(polypropylene, PP)의 재질된 직포형태이고 그 형상은 육면체이다. 그 체적은 대체로 1m 3 이다. 지오백과 지오백간의 마찰각은 25~32°를 갖는다. 지오백 블록의 배부름현상을 방지하기 위하여 보강밴드로 보강하였고 그 재질은 고밀도 폴리에틸렌(HDPE)이다. 40mm 혼합골재의 입도의 범위는 마찰각으로 환산하여 마찰각이 45~60°인 범위를 갖는다. 지오백 블록 전면에는 와이어 메쉬와 식생매트를 부착하여 중력식 옹벽을 친환경적으로 하면서 외관을 미려하게 할 수도 있고 지오백 블록 전면에 보강블록을 쌓으면서 지오 그리드로 보강할 수도 있는 유용한 발명인 것이다. 순환골재, 지오백, 지오백 블록, 보강 밴드, 식생매트
Abstract:
A geo-textile tube having a water blocking member is provided to effectively construct the geo-textile tube while blocking seawater that penetrates into a breakwater body. A geo-textile tube(200) comprises a water blocking member(100). The geo-textile tube is divided along a longitudinal section thereof by the water blocking member to form two cells. The water blocking member prevents water from penetrating into a breakwater body. The water blocking member is installed at a junction surface of the cells and the junction surface is sealed with a filler. The cell has an inlet(110) for filling inside the cell. The water blocking member includes water blocking walls that are spaced apart from each other. An inlet is installed at a portion of the cell where the water blocking walls are installed. A non-permeable material including cement and mortal is injected into a space formed between the water blocking members.
Abstract:
본 발명은 지반 및 흙 등을 고르는 준비단계와; 매트 및 잡석을 포설하는 단계와; 매설암거를 설치한 후 성토하는 단계로 이루어진 매설암거 설치 시공에 있어서, 상기 매설암거 설치후 성토하는 단계가 매설암거 측벽에 EPS블록을 포설한 후 성토하는 단계와 슬라브 상단에 EPS블록을 포설한 후 성토하여 지반층과 동일하도록 마무리하는 단계로 이루어지는 것을 특징으로 하는 EPS를 이용한 매설암거의 구축방법에 관한 것으로, 매설암거 상단 및 측벽에 포설된 EPS블록에 인위적으로 압축을 유발하여 작용토압을 주변흙으로 전달시킴으로써 매설암거에 가해지는 수평 및 수직하중을 감소시킬 수 있는 보다 경제적이고 구조적으로 안정한 매설암거의 구축을 달성할 수 있게된다.