Abstract:
PURPOSE: A device for measuring a large displacement by using an inclinometer is provided to accurately measure a large displacement generated in various structures regardless of a size of the displacement. CONSTITUTION: A device for measuring a large displacement comprises a fixing member(20), a rotating member(10), a movable member(30), and an inclinometer(40). The fixing member is fixed to a reference point for measuring a displacement. The lower part of the rotating member is connected to the fixing member by a first hinge unit(11), thereby rotating in one imaginary rotating reference surface and extending. A sliding unit(12) is formed in the rotating member. The movable member is arranged in the rotating reference surface of the rotating member or a surface which is be in a line with the rotating reference surface. The inclinometer is arranged in the rotating member, thereby measuring an inclined degree caused by the rotation of the rotating member in the rotating reference surface.
Abstract:
PURPOSE: An electronic display device for a road with a light shielding film is provided to prevent the decrease of the luminance ratio of an electronic display device and to prevent the visibility decrease of the electronic display device by covering the front side of the electronic display device with a sunlight shielding film during the day and by removing the sunlight shielding film during the night. CONSTITUTION: An electronic display device for a road with a light shielding film comprises a body(10), an information indicating portion and a light shielding portion(30). The body is located by a support at a given height and ensures the visibility of a driver. The information indicating portion is installed in the body and displays images on traffic related information to the outside. The light shielding portion is installed in the body. The light shielding portion is driven by a driving unit and selectively covers the front side of the information indicating portion.
Abstract:
PURPOSE: A polygonal perforated block for an overflow-preventing bank is provided to increase weight for resisting overflow and coherence between blocks and reduce the velocity of fluid. CONSTITUTION: A polygonal perforated block for an overflow-preventing bank comprises a lower perforated block portion(110) and an upper perforated block portion(120). A protrusion is bent and formed on one side of the lower perforated block portion and a groove is bent and formed on the other side of the lower perforated block portion. The upper perforated block portion is coupled with the lower perforated block portion with sharing a hole which passes through the center of the polygonal perforated block.
Abstract:
PURPOSE: An earth retaining implement using static soil pressure is provided to simplify a working process by reducing the amount of struts and to reduce construction costs. CONSTITUTION: An earth retaining implement using static soil pressure comprises piles(130), and a retaining support(150). The piles are installed by excavating the ground. Earth plates(110) are installed in the excavated ground. The piles are fixed to the contiguous ground using an anchor(190). The retaining support is connected to the piles and supports a waling(170) installed in the excavated ground.
Abstract:
PURPOSE: A method for measuring tensile force or deformation using a Fiber Bragg Grating sensor is provided to accurately measure tensile force or deformation of a steel wire or a steel bar of a prestressed concrete structure. CONSTITUTION: A method for measuring tensile force or deformation using a Fiber Bragg Grating sensor is as follows. More than one hole are punched in a fastening member of a structure(S110). A FBG sensor is inserted into the punched holes(S120). The punched holes in which the FBG sensor is inserted are permanently fixed by resin or adhesive(S130). A stress change of a head nut of a tension steel bar or a fixing port of a tension steel wire is measured using the FBG sensor(S140). A change of tensile force is calculated based on the stress change(S150).
Abstract:
PURPOSE: An apparatus for neutralizing recycled aggregate using a promoted neutralization reaction and a method thereof are provided to reduce a neutralization reaction period by accelerating the neutralization reaction. CONSTITUTION: An apparatus(100) for neutralizing recycled aggregate using a promoted neutralization reaction comprises a container body(111), a fluid supply pipe(115), an input body, a discharge body, an agitating device(120), a gas supply device(140), and a dehydrating device(150). The container body includes an inlet, a neutralization space, and an outlet(114). The fluid supply pipe is connected with a side of the container body. The input body is arranged on a side of the container body. The discharge body opens and closes the outlet. The agitating device is installed at the container body. The supply device is connected with the neutralization space to supply carbon dioxide. The agitating device includes an agitating pipe, an agitating screw, and an agitating motor.
Abstract:
A packer integrated bearing plate and a soil nailing method using the same are provided to improve constructability and economical efficiency by installing a bearing plate and a packer at a single work with an integrated structure of a bearing plate portion and a friction grounding portion, thereby reducing work load. A packer integrated bearing plate, as an accessory used for a soil nailing method which performs grouting after inserting a nail(200) into a perforated hole of the ground, comprises a bearing plate portion(110) and a friction grounding portion(120), wherein the bearing plate portion is formed to be larger than the perforated hole to compress the ground at the front of the perforated hole and provided with a first through hole installed to penetrate a nail and a second through hole installed to penetrate a grouting hose(300), and the friction grounding portion is formed in the cylindrical shape by extending from one side of the bearing plate portion and installed to abut on the inner circumference of the perforated hole in case of being inserted to the perforated hole.
Abstract:
A strain gauge jig is provided to obtain an exact measured value regardless of the test piece deformation without the damage of a strain gauge. A strain gauge jig comprises: a pair of vertical gauge block(630); a strain gauge inserted into one of the vertical gauge block; a sensor terminal part adhering closely to other one of the vertical gauge block; and a pair of the horizontal gauge block(640). The strain gauge is inserted to left and right in one of the horizontal gauge block. The sensor terminal part adheres closely to the other one of the horizontal gauge block.