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公开(公告)号：US10808305B2
公开(公告)日：2020-10-20
申请号：US15745755
申请日：2016-07-20
IPC分类号： C21D9/52 , C22C38/32 , C21D8/08 , C22C38/54 , C22C38/00 , C21D8/06 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , C22C38/24 , E04C5/08
摘要： This invention provides a high-strength PC steel wire having a chemical composition containing, in mass %, C: 0.90 to 1.10%, Si: 0.80 to 1.50%, Mn: 0.30 to 0.70%, P: 0.030% or less, S: 0.030% or less, Al: 0.010 to 0.070%, N: 0.0010 to 0.010%, Cr: 0 to 0.50%, V: 0 to 0.10%, B: 0 to 0.005%, Ni: 0 to 1.0%, Cu: 0 to 0.50%, and the balance: Fe and impurities. A ratio between the Vickers hardness (HvS) at a location (surface layer) that is 0.1D [D: diameter of steel wire] from the surface of the steel wire and the Vickers hardness (HvI) of a region on the inner side relative to the surface layer satisfies the formula [1.10
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公开(公告)号：US10815664B2
公开(公告)日：2020-10-27
申请号：US15542332
申请日：2016-01-05
发明人： Masashi Oikawa , Masato Yamada , Yoshiyuki Matsubara , Shinji Nakaue , Toru Yamamoto , Shinichi Yamanobe , Michio Imai , Naoki Sogabe , Kazumasa Okubo , Kazuyoshi Chikiri , Toshiyuki Kobayashi
摘要： A coated PC steel stranded cable includes: a stranded cable in which a plurality of elemental wires each composed of steel are twisted together; an anti-corrosive coating having an outer circumferential portion that coats an outer circumference of the stranded cable; an outer coating that coats an outer circumference of the anti-corrosive coating; and an optical fiber provided at a position inwardly of an outer circumferential surface of the outer coating and corresponding to a strand groove in the stranded cable so as to follow expansion and contraction of the stranded cable.
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3.发明申请PREGROUTED PC STEEL MATERIAL AND METHOD FOR HARDENING PREGROUT LAYER THEREOF 审中-公开预制PC钢材料和硬化其制成层的方法公开(公告)号：US20150159377A1
公开(公告)日：2015-06-11
申请号：US14418885
申请日：2013-07-05
发明人： Takahide Saiki , Masato Yamada , Yoshihiko Touda , Takashi Ichiki , Kiminori Matsushita , Katsuhito Oshima , Jun Sugawara , Shingo Nakajima , Shuhei Maeda
IPC分类号： E04C5/08
CPC分类号： E04C5/08 , E04C5/10 , E04G21/12 , Y10T428/31529 , Y10T428/31678
摘要： Provided is a pregrouted PC steel material comprising a PC steel stranded wire composed of a plurality of steel wires, a pregrout layer disposed on the outer periphery of the PC steel stranded wire so as to accommodate the PC steel stranded wire, a sheath covering the outer periphery of the pregrout layer, and a capsule including a pregrout-hardening agent and a film with which the agent is covered, the capsule being interposed among the steel wires constituting the PC steel stranded wire. The capsule has a strength such that the capsule is not broken before tensioning the PC steel stranded wire but is broken by a tensile force during the tensioning. Also provided is a method for hardening the pregrout layer.
摘要翻译： 提供一种预浸渍的PC钢材料，其包括由多条钢丝组成的PC钢绞线，设置在PC钢绞线的外周上以便容纳PC钢绞线的预变色层，覆盖外层的护套 预成形层的周边，以及包含预变性剂的胶囊和被覆盖物的膜，胶囊插入构成PC钢绞线的钢丝中。 胶囊的强度使得胶囊在张紧PC钢绞线之前不会断裂，但在张紧期间被张力破坏。 还提供了用于硬化预变性层的方法。
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公开(公告)号：US11001978B2
公开(公告)日：2021-05-11
申请号：US16627874
申请日：2018-02-26
IPC分类号： E01D19/12 , E01D101/26
摘要： A concrete structure includes a first concrete member, a second concrete member, a sheath that is disposed in a through hole extending from the first concrete member to the second concrete member, a tension part that is inserted over the entire length of the sheath and that is subjected to a tensile force, a fixing tool that fixes the tension part to the first concrete member or the second concrete member, and an anticorrosion part that covers the fixing tool. The tension part includes a stranded wire part and a first cover that covers an outer periphery of the stranded wire part. A space between the sheath and the tension part is not filled with a grout material.
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公开(公告)号：US10752974B2
公开(公告)日：2020-08-25
申请号：US15745747
申请日：2016-07-20
IPC分类号： C21D9/52 , C21D8/08 , C22C38/08 , C21D6/00 , C21D8/06 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , C22C38/24 , C22C38/32 , C22C38/40
摘要： This invention provides a high-strength PC steel wire having a chemical composition containing, in mass %, C: 0.90 to 1.10%, Si: 0.80 to 1.50%, Mn: 0.30 to 0.70%, P: 0.030% or less, S: 0.030% or less, Al: 0.010 to 0.070%, N: 0.0010 to 0.010%, Cr: 0 to 0.50%, V: 0 to 0.10%, B: 0 to 0.005%, Ni: 0 to 1.0%, Cu: 0 to 0.50%, and the balance: Fe and impurities. A ratio between the Vickers hardness (HvS) at a location (surface layer) that is 0.1D [D: diameter of steel wire] from the surface of the steel wire and the Vickers hardness (HvI) of a region on the inner side relative to the surface layer satisfies the formula [1.10
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公开(公告)号：US10081943B2
公开(公告)日：2018-09-25
申请号：US14418885
申请日：2013-07-05
发明人： Takahide Saiki , Masato Yamada , Yoshihiko Touda , Takashi Ichiki , Kiminori Matsushita , Katsuhito Oshima , Jun Sugawara , Shingo Nakajima , Shuhei Maeda
CPC分类号： E04C5/08 , E04C5/10 , E04G21/12 , Y10T428/31529 , Y10T428/31678
摘要： Provided is a pregrouted PC steel material comprising a PC steel stranded wire composed of a plurality of steel wires, a pregrout layer disposed on the outer periphery of the PC steel stranded wire so as to accommodate the PC steel stranded wire, a sheath covering the outer periphery of the pregrout layer, and a capsule including a pregrout-hardening agent and a film with which the agent is covered, the capsule being interposed among the steel wires constituting the PC steel stranded wire. The capsule has a strength such that the capsule is not broken before tensioning the PC steel stranded wire but is broken by a tensile force during the tensioning. Also provided is a method for hardening the pregrout layer.
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公开(公告)号：US11028587B2
公开(公告)日：2021-06-08
申请号：US16631123
申请日：2018-04-19
发明人： Motonobu Nishino , Masato Yamada
摘要： A concrete structure body includes a first concrete member having a first facing surface; a second concrete member having a second facing surface and disposed such that the first facing surface and the second facing surface face each other; a connection portion that fills a gap between the first facing surface and the second facing surface; and a tendon disposed in the connection portion to extend along the first facing surface and the second facing surface and to which a tensile force is applied in a longitudinal direction.
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公开(公告)号：US10323415B2
公开(公告)日：2019-06-18
申请号：US14891638
申请日：2014-12-18
发明人： Katsuhito Oshima , Masato Yamada , Yoshiyuki Matsubara , Kiminori Matsushita , Shuichi Tanaka , Jun Sugawara , Shingo Nakajima
摘要： A pregrouted PC steel material (10) includes a 19-wire-twisted PC strand (1), a pregrouted layer (2) disposed on an outer periphery of the PC strand (1), and a sheath (3) configured to cover an outer periphery of the pregrouted layer (2). A filling resin (4) is filled between steel wires (side wires) (1b, 1c, 1d). Since the filling resin (4) does not exude to the pregrouted layer (2) before tensioning of the PC strand (10), an operation of tensioning the PC strand (1) is not hindered by curing of the pregrouted layer (2). In contrast, since the gap between the steel wires is reduced when the PC strand (1) is tensioned, the filling resin (4) flows out (exudes) from between the steel wires to the pregrouted layer (2) to cure the pregrouted layer (2) only after the reduction.
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