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    • 3. 发明专利
    • Construction method for cast-in-place pile
    • 建筑施工方法
    • JP2005042420A
    • 2005-02-17
    • JP2003278107
    • 2003-07-23
    • East Japan Railway Co東日本旅客鉄道株式会社
    • TANIGUCHI YOSHINORITAKIZAWA SATOSHIWATANABE YASUOKIDO MOTOKO
    • E02D5/34E02D3/10
    • PROBLEM TO BE SOLVED: To suppress liquefaction by suppressing a rise in excess pore water pressure or increasing a ground density, in terms of a cast-in-place pile. SOLUTION: The cast-in-place pile 26 is constructed in the ground, and a permeable layer or a swelling layer 24 is formed along a circumferential surface of the pile. The permeable layer 24 is constructed by charging a highly permeable material 23 such as porous concrete and crushed stone. The swelling layer 24 is constructed by charging a material 23 which is expanded by absorption of water into lime etc. A seepage control material 22 for separation from the permeable layer or the swelling layer 24 is preinstalled before the placing of concrete for the cast-in-place pile. In this way, when the permeable layer 24 is formed along the circumferential surface of the pile 26, an increase in the excess pore water pressure can be suppressed for the suppression of the liquefaction because excess pore water generated by a seismic ground motion can escape into the permeable layer 24 of the circumferential surface of the pile. Additionally, when the swelling layer 24 is formed, the ground density can be increased for the suppression of the liquefaction because the swelling layer 24 swells by virtue of the inflow of groundwater into the swelling layer 24 of the circumferential surface of the pile. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:就浇注桩而言,通过抑制过量孔隙水压力的上升或增加地面密度来抑制液化。 解决方案:现浇桩26构造在地面上,并且沿着桩的圆周表面形成可渗透层或膨胀层24。 可渗透层24是通过加入诸如多孔混凝土和碎石的高渗透性材料23构成的​​。 膨胀层24通过将通过吸收水膨胀的材料23装入石灰等构成。在将用于铸造的混凝土放置之前,预先安装用于与可渗透层或膨胀层24分离的防渗材料22 地桩。 以这种方式,当沿着桩26的圆周表面形成可渗透层24时,由于地震运动产生的多余的孔隙水可以逃逸,可以抑制超孔隙水压的增加以抑制液化 桩的圆周表面的可渗透层24。 此外,当形成膨胀层24时,由于溶解层24由于地下水流入桩的周向表面的膨胀层24而膨胀,所以可以增加地面密度以抑制液化。 版权所有(C)2005,JPO&NCIPI
    • 5. 发明专利
    • 場所打ち杭の孔壁防護体、及びその構築方法
    • 套管墙的孔壁保护体及其构造方法
    • JP2015030971A
    • 2015-02-16
    • JP2013158635
    • 2013-07-31
    • 株式会社大林組Ohbayashi Corp東日本旅客鉄道株式会社East Japan Railway Co
    • YAMAMOTO TADAHISATONO MITSUOKUBO TERUAKIWATANABE KOJITAKIZAWA SATOSHI
    • E02D5/18E02D5/36
    • 【課題】場所打ち杭の施工時に孔壁の崩壊による地盤の変状の影響が既設構造物に及ぶことを防止すると共に、孔壁防護体の施工コストを低減する。【解決手段】複数のソイルセメント柱12、14が既設構造物2の近傍で施工される場所打ち杭1の杭孔を囲うように配されて連結された孔壁防護体10であって、既設構造物2側の所定の範囲10Bでは、天端から下端まで延びるソイルセメント柱12が隙間なく構築されているのに対して、間引き側の範囲10Cでは、上部10Aについてはソイルセメント柱12、14が隙間なく構築され、上部10Aより下側についてはソイルセメント柱12が間隔を空けて構築されていることを特徴とする。【選択図】図1
    • 要解决的问题:为了防止现有结构受到现场结构的影响,由于当现浇桩施工时孔壁因塌陷而受到基础变形的影响,并且降低了孔壁保护体的施工成本。 :在孔壁保护体10中,多个土壤水泥柱12,14彼此配置并连接,以便围绕现有结构2附近的现浇桩1的桩孔。 从其冠部延伸到其底部边缘的土壤水泥柱12构造成在现有结构2侧的规定范围10B内形成间隙。在稀疏侧的范围10℃内,土壤水泥柱12,14 被构造成在上部10A中没有形成间隙,并且土壤水泥柱12,14在上部10A的下方的一侧上形成有间隙。
    • 7. 发明专利
    • Reinforcing structure
    • 加固结构
    • JP2007070991A
    • 2007-03-22
    • JP2005262460
    • 2005-09-09
    • East Japan Railway Co東日本旅客鉄道株式会社
    • ISHIBASHI TADAYOSHITSUYOSHI TAKESHIWATANABE YASUOFUJIWARA TORASHIROTANIGUCHI YOSHINORITAKIZAWA SATOSHINOZAWA SHINICHIROWATANABE AKIYUKI
    • E02D27/34E01D19/02E01D22/00E02D27/32E02D31/08
    • PROBLEM TO BE SOLVED: To provide a reinforcing structure which achieves sufficient reinforcement strength and reduces costs in reinforcing a part of a pillarlike structure that is buried in the ground. SOLUTION: The reinforcing structure 20 reinforcing the pillarlike structure 10 erected on the ground 200 includes a board portion 21 placed on the ground 200 surrounding the pillarlike structure 10, and a pile portion 22 which extends from the board portion 21 and is buried in the ground 200. This reinforcing structure 20 reduces a stress of bending, shearing, etc., on the pillarlike structure 10 to reinforce an underground portion 10a of the pillarlike structure 10 with sufficient strength. The reinforcing structure 20 requires the board portion 21 and pile portion 22 only, thus enabling cost reduction. In constructing the reinforcing structure 20 on the pillarlike structure 10, the underground portion 10a of the pillarlike structure 10 is not needed to be enlarged, which allows further cost reduction. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种加强结构,其能够实现足够的加强强度并且降低加强埋在地下的柱状结构的一部分的成本。 解决方案:加强立柱在地面200上的柱状结构10的加强结构20包括设置在围绕柱状结构10的地面200上的基板部分21和从基板部分21延伸并被埋设的绒头部分22 该加强结构20减小了在柱状结构体10上的弯曲,剪切等的应力,以足够的强度加强柱状结构体10的地下部分10a。 加强结构20仅需要基板部分21和绒头部分22,从而能够降低成本。 在柱状结构体10上形成加强结构体20时,不需要扩大柱状结构体10的地下部分10a,从而进一步降低成本。 版权所有(C)2007,JPO&INPIT
    • 8. 发明专利
    • Wide-flange shape steel pile and construction method therefor
    • 宽法兰形状钢板及其构造方法
    • JP2004132111A
    • 2004-04-30
    • JP2002299818
    • 2002-10-15
    • East Japan Railway Co東日本旅客鉄道株式会社
    • ISHIBASHI TADAYOSHITANIGUCHI YOSHINORITAKIZAWA SATOSHI
    • E02D3/12E02D5/28
    • PROBLEM TO BE SOLVED: To provide a wide-flange shape steel pile and a construction method therefor, which can increase the bearing capacity of the peripheral surface of the pile in a construction method wherein injection is concurrently used.
      SOLUTION: In this wide-flange shape steel pile 1, an injection pipe 3 is preinstalled in a pile body 2; after the pile body 2 is inserted into ground G, a liquid soil-improving material 21, which is not only cured but also expanded with a lapse of time, is injected into the ground G from an opening at the lower end of the injection pipe 3 under high pressure; and the curing and expansion of the material 21 prevent the loosening of the ground G on the periphery of the pile body 2, and increase the bearing capacity.
      COPYRIGHT: (C)2004,JPO
    • 要解决的问题:提供一种宽法兰形钢桩及其施工方法,其可以在同时使用注射的施工方法中增加桩的周边表面的承载力。 解决方案:在这种宽法兰形钢桩1中,注射管3预先安装在桩体2中; 在将桩体2插入地面G之后,不仅固化而且随时间膨胀的液体土壤改善材料21从喷射管下端的开口喷射到地面G中 3在高压下; 并且材料21的固化和膨胀防止了在桩体2的周边上的地面G的松动,并且增加了承载能力。 版权所有(C)2004,JPO