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    • 1. 发明专利
    • Water immersion expansion test method and water immersion expansion test device of expansive material and banking construction method
    • 膨胀试验方法和渗水膨胀试验装置的膨胀试验装置和储存结构方法
    • JP2013033002A
    • 2013-02-14
    • JP2011169861
    • 2011-08-03
    • Fujita Corp株式会社フジタNippon Steel & Sumitomo Metal新日鐵住金株式会社
    • KITAJIMA AKIRATOSAUCHI YUSUKEFUKUSHIMA SHINJIKIMURA TAKANORIOZAKI TERUTAKAMAZAWA MASATOKIMURA MASAYOSHI
    • G01N33/24E02D17/18
    • PROBLEM TO BE SOLVED: To provide a water immersion expansion test method and device of an expansive material, capable of quantitatively recognizing a suppression effect of expansibility by a confining pressure of the expansive material and contributing to enlargement of an application range of the expansive material.SOLUTION: A preset confining pressure is loaded on a test piece 10 inside a mold 12 installed inside a water tank 14 for cure, and a water immersion expansion amount of the test piece 10 is measured under the confining pressure load. From a ratio of the measured water immersion expansion amount and a height dimension of the test piece 10 before the confining pressure load, a water immersion expansion ratio of the test piece 10 is calculated. Then, measurement of the water immersion expansion amount and calculation of the water immersion expansion ratio are repeatedly performed, the water immersion expansion ratio at the point of time at which the water immersion expansion of the test piece 10 is converged is obtained as a convergence value of the test piece 10, an earth covering pressure of a general banking material to be put on the expansive material according to a banking height scheduled beforehand and the water immersion expansion ratio of the expansive material corresponding to the earth covering pressure are obtained from the convergence value.
    • 要解决的问题:提供一种膨胀材料的浸水膨胀试验方法和装置,其能够通过膨胀材料的围压定量地识别膨胀性的抑制效果,并有助于扩大膨胀材料的施加范围 膨胀材料 解决方案:将预设的围压加载在安装在水箱14内部的用于固化的模具12内的测试片10上,并且在围压下的负载下测量试验片10的浸水膨胀量。 从限制压力负荷前的测定的浸水膨胀量和试验片10的高度尺寸的比例,算出试验片10的浸水膨胀率。 然后,重复进行浸水膨胀量的测定和浸水膨胀率的计算,得到试验片10的浸水膨胀的会聚点的时间的浸水膨胀率作为收敛值 根据预先计划的银行高度和待覆盖压力的膨胀材料的浸水膨胀率,从收敛性获得测试片10的覆盖压力的一般银行资料的土地覆盖压力 值。 版权所有(C)2013,JPO&INPIT
    • 3. 发明专利
    • IMPACT ABSORPTION TYPE GROUND AND ITS PREPARATION
    • JPH1150411A
    • 1999-02-23
    • JP34191497
    • 1997-11-28
    • FUJITA CORP
    • SAKAMOTO HIROYUKIKITAJIMA AKIRAFUKUSHIMA SHINJI
    • E01C7/26E01C13/00E01C13/06
    • PROBLEM TO BE SOLVED: To relieve a load for legs and loins by effectively lightening impact received from the ground in the case where a person runs and takes severe exercise on the ground composed of a floor soil making sandy soil a main component. SOLUTION: A floor soil layer G reclaimed on foundation ground B is composed of a lower layer part GL composed of gravel material 1, an upper layer part GU composed of mixture material mixing resilient body pieces 3 composed of resilient bodies such as rubber, urethane or polystyrene foam in with sandy material or soil material, and an intermediate layer part GM composed of the gravel material 1 in the lower layer part GL, the sandy material or the soil material in the upper layer part GU and gravel material 4 having intermediate particles. The upper layer part GU is composed of an upper layer lower part bed rock GU1 composed of only the mixture material and a surface layer vegetation part GU2 adding soil improvement material for giving sand nourishment property and water retention to the mixture material, and lawn ST is planted on the surface of the surface vegetation part GU2 .
    • 4. 发明专利
    • APPARATUS AND METHOD FOR TEST OF SHEAR STRENGTH OF BEDROCK IN ORIGINAL POSITION
    • JPH10325788A
    • 1998-12-08
    • JP15284697
    • 1997-05-26
    • FUJITA CORP
    • FUKUSHIMA SHINJI
    • G01B5/30G01N3/00G01N3/24
    • PROBLEM TO BE SOLVED: To obtain an apparatus and a method in which the shear strength after the excavating operation of a bedrock whose stress is released by the excavating operation can be found precisely. SOLUTION: An apparatus 10 is provided with a shear ring 12, with a vertical-load loading mechanism 16, with a shear-load loading mechanism 18, with a vertical displacement meter 60 and with a shear displacement meter 62. A test piece which is cut off in an original position by excavating the circumference of a bedrock B to be tested is surrounded by the shear ring 12. The vertical-load loading mechanism 16 loads a vertical load to the test piece. The shear-load loading mechanism 18 loads a horizontal load to the shear ring 12 so as to load a shear load to the test piece. The displacement meters 60, 62 measure the vertical displacement amount and the shear displacement amount of the test piece. When the vertical load and the shear load which are loaded to the test piece are adjusted, the initial stress state of the bedrock B before its excavation and the state of the bedrock B whose stress is releaded after its excavation can be reproduced.
    • 8. 发明专利
    • ANCHOR HEAD CONSTRUCTION
    • JPH07233529A
    • 1995-09-05
    • JP16785994
    • 1994-07-20
    • FUJITA CORP
    • FUKUSHIMA SHINJI
    • E02D5/76E02D5/80
    • PURPOSE:To obtain an anchor head holding a perpendicular surface always against the direction of a tensile member by forming the anchor head of a pedestal borne on a bearing section placed by contacting with a bedrock and a clamping member binding the basic end of the tensile member passing through the pedestal. CONSTITUTION:An excavated hole H is provided in a bedrock G forming an earth retaining of an H shape steel S1, and after the front end of a tensile member 3 is fixed to the excavated hole H, the basic end passes through an opening 1a of a pedestal 1 mounted to the steel S1. After that, the tensile member 3 passes through an opening 2b of a bearing plate 2, a recessed curve 2a is slide along a projected sphere of the pedestal 1, and the tensile member 3 is clamped with a clamping metal fixture 4 to fix. Then, in the case a perpendicular surface against the direction of the tensile member 3 is not held by a directional error of the excavated hole H in the bedrock G or finish accuracy of a fixed surface of the anchor head, the projected curve 2a is slid along the projected sphere of the pedestal 1, and the tensile member 3 is tentioned in the direction matching to directions of the tensile member 3 and excavated hole H.
    • 10. 发明专利
    • REINFORCING FILL-UP WALL EMPLOYING RETAINING WALL BLOCK
    • JPH10183624A
    • 1998-07-14
    • JP35664796
    • 1996-12-27
    • FUJITA CORP
    • FUKUSHIMA SHINJI
    • E02D17/18
    • PROBLEM TO BE SOLVED: To increase effect of reinforcement for a fill-up wall constructed in steepness, and to effectively prevent deformation from occurring to the fill-up wall. SOLUTION: Base blocks are laid on a created ground or a consolidated foundation BC, being arranged in the direction intersecting at a right angle the section of a fill-up wall, and a retaining wall block 11 is placed thereon. Then, a fill-up layer G'1 attaining in a height at an attachment hole of the retaining wall block 11 is formed with fill-up materials G spread and compacted. A beltlike reinforcing member 4, connected with a tensile force-giving metal 5 to the attachment hole of each of the retaining wall blocks 11 , is laid on the fill-up layer G'1 . Then, a second retaining wall block 12 is placed on the retaining wall block 11 , and a second fill-up layer G'2 is formed. With similar works repeated successively, a fill-up foundation in a specified height is created. After consolidation, settlement and deformation are ceased at the fill-up foundation, tensile force is given to the beltlike reinforcing member 4 with a nut 52 of the tensile fiorce-giving metal 5 screwed up.