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公开(公告)号：US20130269308A1
公开(公告)日：2013-10-17
申请号：US13740526
申请日：2013-01-14
发明人： Ryohei KUROSAWA , Kei HIRAI
IPC分类号： D07B1/02
CPC分类号： D07B1/02 , D07B1/0693 , D07B7/185 , D07B2201/2006 , D07B2201/2011 , D07B2201/2012 , D07B2201/2013 , D07B2201/2044 , D07B2201/2046 , D07B2201/2051 , D07B2201/2059 , D07B2201/2065 , D07B2205/306 , D07B2205/3064 , D07B2205/3067 , D07B2205/3071 , D07B2207/404 , D07B2207/4059 , D07B2301/10 , D07B2301/45 , D07B2401/2025 , D07B2501/2023 , D07B2801/12 , D07B2801/18 , D07B2801/60
摘要： In order to provide a double rustproof PC strand with superior durability and semi-permanent rustproof performance, a core wire and surrounding wires are formed of wires subjected to a wire drawing treatment and a plating treatment and formed with a plated layer, and a rustproof treatment is applied by forming a synthetic resin coat on an outer peripheral surface thereof. In order to uniformize and regulate the twisting pitch, the core wire and the surrounding wires are adjusted under the conditions of (A) Diameter of CORE: 4.42±0.05 mm, Diameter of Surrounding wire: 4.25±0.05 mm, (B) Diameter of CORE: 5.22±0.05 mm, Diameter of Surrounding wire: 5.06±0.05 mm, or (C) Diameter of CORE: 5.40±0.05 mm, Diameter of Surrounding wire: 5.25±0.05 mm, and then twisted, and the tensile strength is 1850 N/mm2 or higher.
摘要翻译： 为了提供具有优异的耐久性和半永久性防锈性能的双重防锈PC绞线，芯线和周围的线由经过拉丝处理和电镀处理的电线形成，并且形成有镀层，并且防锈处理 通过在其外周面上形成合成树脂涂层来施加。 为了使捻距均匀化和调节，在（A）直径CORE为4.42±0.05mm，周围线直径为4.25±0.05mm的条件下，对芯线和周围线进行调整，（B）直径 核心：5.22±0.05mm，周围线直径：5.06±0.05mm，或（C）直径CORE：5.40±0.05mm，周围线直径：5.25±0.05mm，扭转，拉伸强度为1850 N / mm2以上。
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公开(公告)号：US20210079643A1
公开(公告)日：2021-03-18
申请号：US16897267
申请日：2020-06-10
发明人： Ryohei KUROSAWA
摘要： There is provided a method of prestressing a beam-column joint with an appropriate ratio among the magnitudes of compression in the directions of X, Y, and Z axes. The method introduces prestress in a beam-column joint with a tensile introducing force generated by tensionally anchoring prestressing tendons that are arranged in PC beams extending along two horizontal directions (or X axis and Y axis) and PC columns extending along the vertical direction (or Z axis) and passed through the beam-column joint to bring the beam-column joint in triaxial compression, the prestress being introduced such that a diagonal tensile force T generated by an input shear force due to a seismic load of an extremely great earthquake that may occur very rarely will be cancelled completely or partially so as not to allow diagonal cracks to occur. The ratio of the prestresses introduced in the directions of the respective axes satisfies the following equation (1): σx:σy:σz=1:1:0.3−0.9 (1) where σx, σy, and σz are prestresses introduced in the directions of the X axis, the Y axis, and the Z axis respectively.
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3.发明申请公开(公告)号：US20210189726A1
公开(公告)日：2021-06-24
申请号：US16950846
申请日：2020-11-17
发明人： Ryohei KUROSAWA
摘要： There is provided a method of introducing prestress into a beam-column joint of PC construction to make it into a triaxially compressed state, in which the beam-column joint is made into a triaxial compression state and reasonable prestress is introduced into cross section areas of the ends of the members forming the beam-column joint.
A tensile introducing force is generated by tensionally anchoring PC cables passed through the beam-column joint to introduce prestresses into the cross section areas of the ends of the members forming the beam-column joints in respective axial directions to make triaxial compression state, to satisfy the following conditions (1) and (2): (1) no tensile strength is generated, with respect to long term design load, in cross-section areas of the members forming the end of the beam and the end of the column, which ends are in contact with the beam-column joint; and (2) upon occurring of extremely large scale earthquake (very rarely occurred earthquake), in the beam-column joint, no generation of diagonal cracks is allowed to be generated but diagonal tensile stress intensity caused due to shear force inputted by seismic load is made less than allowable tensile stress intensity of concrete.-
4.发明申请公开(公告)号：US20150330095A1
公开(公告)日：2015-11-19
申请号：US14710901
申请日：2015-05-13
发明人： Ryohei KUROSAWA
摘要： In an earthquake resisting design method of a PC construction, a column and a beam, which are high-strength precast prestress concrete members, is joined by binding juncture with a prestressing tendon. A grout is filled and bonded. A first stage linear resilient design is employed, where all construction members are not damaged, for earthquakes up to a predetermined earthquake load design value. A second stage linear resilient design is employed, where earthquake energy is absorbed by breakage of the bond of the grout, and principal construction members are not damaged, for earthquakes exceeding the predetermined earthquake load design value. By employing a non-linear resilient design in which the first stage linear resilient design and the second stage linear resilient design is combined, an earthquake-resisting design level is significantly increased, the construction can resist earthquakes exceeding a seismic intensity 6 upper.
摘要翻译： 在PC结构的抗震设计方法中，作为高强度预制预应力混凝土构件的柱和梁通过结合接头与预应力筋连接。 灌浆和灌浆。 采用第一级线性弹性设计，其中所有建筑构件都不被破坏，用于达到预定的地震载荷设计值的地震。 采用第二级线性弹性设计，其中地震能量被水泥浆粘结破坏所吸收，主体构件不会受到破坏，超过预定的地震荷载设计值。 通过采用第一级线性弹性设计和第二级线性弹性设计组合的非线性弹性设计，抗震设计水平显着提高，该结构可以抵抗超过地震烈度6上方的地震。
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公开(公告)号：US20210198887A1
公开(公告)日：2021-07-01
申请号：US17117056
申请日：2020-12-09
发明人： Ryohei KUROSAWA
摘要： A structure enables free and reasonable designing of a cross section of an end of a steel beam in accordance with bending stress and a housed state of a PC steel, thereby providing an economic and reasonable building as a whole. A beam end block includes end plates and an anchor plate. The end plates are fixed at an end surface of an H-section steel in a direction substantially perpendicular to the longitudinal direction of the beam. The anchor plate is fixed to the H-section steel separately from the end plates, on a side opposite to a column, in a direction substantially perpendicular to the longitudinal direction of the beam. An end of the steel beam has an upper part and a lower part. The upper part protrudes toward the column more than the lower part and is mounted on a cogging. The beam end block has a height dimension larger than the height dimension of the H-section steel and has a lower end that is disposed at substantially the same height as a lower end of a side surface of the cogging facing the lower part of the end of the steel beam.
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公开(公告)号：US20180127966A1
公开(公告)日：2018-05-10
申请号：US15800718
申请日：2017-11-01
CPC分类号： E04B1/185 , E04B1/30 , E04B1/98 , E04B5/29 , E04B2103/02 , E04B2103/06 , E04C5/0645 , E04C5/08 , E04H9/021 , E04H9/025
摘要： A method is provided for jointing a concrete column and an iron beam. A structure joint portion is provided between a column-beam junction and an end of the iron beam, which is mounted on a cogging provided to the column. Prestressing tendons are arranged in plural rows to horizontally penetrate the column-beam junction. Tension-introduction forces are applied to the prestressing tendons to tensionally anchor an anchor plate, and thereby to integrally joint the column and the beam.
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公开(公告)号：US20140034208A1
公开(公告)日：2014-02-06
申请号：US13913583
申请日：2013-06-10
发明人： Ryohei KUROSAWA , Kei HIRAI , Naoki MATSUBARA
IPC分类号： C09D5/08
CPC分类号： C09D5/08 , B05D1/06 , B05D7/20 , D07B7/145 , D07B7/185 , D07B2201/2012 , D07B2201/2023 , D07B2201/2059 , D07B2201/2065 , D07B2205/206 , D07B2207/4059 , D07B2207/4068 , D07B2401/2025 , D07B2501/2023 , E04C5/015 , E04C5/08 , Y10T29/49194 , Y10T29/49224 , D07B2801/12 , D07B2801/18 , D07B2801/60
摘要： In a method for forming a rustproof film on a PC strand, the thickness of the resin film is set to 200±80 μm, the pre-heating is performed within a temperature range from 60 to 150° C. to prevent an occurrence of a cob-webbing phenomenon as a result of melting of the synthetic resin powder coating material and the post-heating is performed within a range from 150 to 250° C. in order to uniformize the thickness of the coats adhered to the outer peripheral surfaces of the core wire and the surrounding wires, and the temperature of the pre-heating is set to be lower than the temperature of the post-heating, and the synthetic resin powder coating material including particles having diameters in a range from 0.1 to 250 μm is used, and the line speed in the series of steps is set to 5 to 10 m/min.
摘要翻译： 在PC绞合线上形成防锈膜的方法中，将树脂膜的厚度设定为200±80μm，预热在60〜150℃的温度范围内进行，以防止发生 由于合成树脂粉末涂料的熔化和后加热，在150-250℃的范围内进行丝网织带现象，以使粘附在外层表面上的涂层的厚度均匀化 芯线和周围线，并且将预热的温度设定为低于后加热的温度，并且使用包括直径在0.1至250μm的粒子的合成树脂粉末涂料 ，一系列步骤中的线速度设定为5〜10m / min。
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