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1. 发明专利

JP2008308846A Partial anticorrosion method for steel bridge, and steel bridge 有权
标题翻译：钢桥梁和钢桥的局部抗腐蚀方法
公开(公告)号：JP2008308846A
公开(公告)日：2008-12-25
申请号：JP2007156349
申请日：2007-06-13
申请人： Jfe Engineering Kk , Jfe Steel Kk , Jfeエンジニアリング株式会社 , Jfeスチール株式会社
发明人： KATO SHINJI , MATSUDA MINORU , KAGE ISAMU , NAKANISHI KATSUYOSHI , KANO ISAMU
IPC分类号： E01D1/00 , E01D22/00
摘要： PROBLEM TO BE SOLVED: To provide a partial anticorrosion method for a steel bridge, which enables a surface to be clearly divided into a region for undergoing anticorrosion coating and a region for dispensing with the anticorrosion coating, and to provide the steel bridge.
SOLUTION: This steel bridge 1 for supporting a floor slab 30 is composed of right and left main girders 20 and 10, both of which are formed of weatherable steel. A right-side additional member 28 as a nonstructural member, which is protruded from a windward side surface 241 of a right-side web of the right main girder 20, is mounted on the windward side surface 241 of the right-side web of the right main girder 20. A position to mount the right-side additional member 28 is set as a position to divide the windward side surface 241 into a windward side highly-corroded portion 241A of the right-side web, which is estimated to be corroded to a predetermined degree of corrosion or above, and a windward side low-corroded portion 241B of the right-side web, which is estimated to be corroded to a degree of corrosion under the predetermined degree of corrosion. A coating film M is formed by applying the anticorrosion coating to the highly-corroded portion 241A.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种用于钢桥的部分防腐蚀方法，其能够将表面清楚地划分成用于进行防腐蚀涂层的区域和用于分配防腐涂层的区域，并且提供钢桥。解决方案：用于支撑楼板30的钢桥1由左右主梁20和10组成，两者均由耐候性钢构成。从右主梁20的右侧腹板的向上侧面241突出的作为非结构构件的右侧附加构件28安装在右主梁的右侧腹板的迎风侧面241上右侧主梁20.安装右侧附加构件28的位置被设定为将迎风侧面241分割成估计被腐蚀的右侧腹板的迎风侧高度腐蚀部分241A的位置达到预定的腐蚀程度以上，以及右侧腹板的迎风侧低腐蚀部分241B，在预定腐蚀程度下被估计腐蚀程度。通过将防腐涂层施加到高度腐蚀的部分241A上来形成涂膜M。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2007023712A Columnar structure using shape steel, pier or foundation pile and its manufacturing method 有权
标题翻译：使用形状钢，夯或基础桩的柱结构及其制造方法
公开(公告)号：JP2007023712A
公开(公告)日：2007-02-01
申请号：JP2005211151
申请日：2005-07-21
申请人： Jfe Engineering Kk , Jfe Steel Kk , Jfeエンジニアリング株式会社 , Jfeスチール株式会社 , Ohbayashi Corp , 株式会社大林組
发明人： NAKANISHI KATSUYOSHI , KAWAI YUTAKA , KOIZUMI MIKIO , ISHIZAWA TAKESHI , MOTOKI TAKUYA , TONO MITSUO , ABE KANAME
IPC分类号： E02D5/22 , E01D19/02 , E04B1/30
摘要： PROBLEM TO BE SOLVED: To provide a columnar structure or a foundation pile such as a pier column or a temporary steel column, superior in economic efficiency and construction efficiency, and resistible to the bending moment as a composite cross section up to reaching a final state; and its manufacturing method.
SOLUTION: When a cross section of the column is small, a piece 30' formed in a T-shaped cross-sectional shape by cutting inner rib H shape steel 30 at the web center, is welded to both sides of the web center of the inner rib H shape steel, and this is covered with concrete 34. When the cross section is large like the pier column, a flange end part on one side of the inner rib H shape steel 30 is welded to the flange end part on one side of the inner rib H shape steel adjacent in the axial direction of the H shape steel, and a polygonal cross section A closed by a flange is formed, and a hoop tie 32 is wound around its periphery, and these are covered with the concrete 34. Here, mutual another one flanges of the adjacent inner rib H shape steel 30 can also be connected by welding via a steel plate 36 instead of winding the hoop tie on the periphery.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供经济效率和施工效率优越的柱状结构或基桩，例如墩柱或临时钢柱，并且可以作为复合横截面抵抗弯矩，直到达到最终状态及其制造方法。解决方案：当柱的横截面小时，通过在腹板中心切割内肋H形钢30而形成为T形横截面形状的部件30'被焊接到腹板的两侧内肋H形钢的中心，并用混凝土34覆盖。当横截面像墩柱那样大时，内肋H型钢30的一侧上的凸缘端部焊接到凸缘端部在H型钢的轴向相邻的内侧肋H型钢的一侧形成有由法兰闭合的多边形截面A，并且环状带32围绕其周边卷绕，并且覆盖有混凝土34.这里，相邻的内肋H型钢30的相互的另一个凸缘也可以通过钢板36的焊接而连接，而不是将箍带缠绕在周边上。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2008063803A Composite floor slab formed of shape steel with inner rib, composite floor slab bridge, or composite girder bridge 审中-公开
标题翻译：具有内部RIB，复合地板SLAB桥或复合GIRDER BRIDGE的成型钢的复合地板
公开(公告)号：JP2008063803A
公开(公告)日：2008-03-21
申请号：JP2006242238
申请日：2006-09-07
申请人： Jfe Engineering Kk , Jfe Steel Kk , Jfeエンジニアリング株式会社 , Jfeスチール株式会社 , Ohbayashi Corp , 株式会社大林組
发明人： NAKANISHI KATSUYOSHI , KAWAI YUTAKA , KOIZUMI MIKIO , KAWABATA ATSUTAKA , INOMURA YASUHIRO , ISHIZAWA TAKESHI , MOTOKI TAKUYA , OKI TAKESHI , TONO MITSUO , ABE KANAME
IPC分类号： E01D19/12 , E01D2/02
摘要： PROBLEM TO BE SOLVED: To provide a composite floor slab formed of shape steels with inner ribs allowing almost the entire cross section of concrete to be considered as a concrete effective cross section capable of resisting against a positive bending moment acting upon the composite floor slab (bridge), good in cost efficiency and workability, and high in fatigue life because of exhibiting the behavior as a slab even in an ultimate state, a composite floor slab bridge, or a composite girder bridge.
SOLUTION: The composite floor slab is formed of a bottom steel plate (32b, 64), and a plurality of H-shape steels 31 with inner ribs, which are arranged side by side in a direction of flanges, orthogonal to an axial direction of the H-shape steels such that the flanges (31a, 31b) are located at upper and lower ends, and that the lower flanges 31b of the H-shape steels adjacent to each other are tied to each other via the bottom steel plate 32b, Alternatively the composite floor slab is formed of the bottom steel plate, and a plurality of T-shape steels 61 with inner ribs, which are arranged side by side in a direction of flanges, orthogonal to an axial direction of the T-shape steels such that the flanges 61a are located at an upper end, and that shafts of the T-shape steels adjacent to each other are tied to each other via the bottom steel plate 64.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种由形状钢形成的复合地板，其具有允许几乎整个混凝土横截面的内部肋条作为能够抵抗作用于复合材料的正弯矩的混凝土有效横截面地板（桥梁），成本效益和可加工性好，疲劳寿命高，即使在最终状态下也表现为板坯的行为，复合地板桥梁或复合梁桥。解决方案：复合地板由下钢板（32b，64）和多个具有内肋的H形钢31形成，该钢板与凸缘方向并排设置， H形钢的轴向方向使得凸缘（31a，31b）位于上端和下端，并且H形钢的相邻的下凸缘31b通过底钢相互连接板32b。或者，复合地板由底钢板形成，多个具有内肋的T形钢61与法兰的T方向的正交方向并排配置，形状钢，使得凸缘61a位于上端，并且T形钢彼此相邻的轴经由底钢板64彼此连接。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JP2004204602A Joint structure between steel main girder and pier and joint method 有权
公开(公告)号：JP2004204602A
公开(公告)日：2004-07-22
申请号：JP2002376669
申请日：2002-12-26
申请人： Jfe Engineering Kk , Jfe Steel Kk , Jfeエンジニアリング株式会社 , Jfeスチール株式会社 , Kawatetsu Kyoryo Tekko Kk , Maeda Corp , 前田建設工業株式会社 , 川鉄橋梁鉄構株式会社
发明人： NAKANISHI KATSUYOSHI , TAKEDA KATSUAKI , KOIZUMI MIKIO , UCHIDA KAZUTO , OOKUBO HIROHISA , TANAKA MURAHITO , MISHIMA TETSUYA , HARA NATSUO , OBARA TAKAYUKI
IPC分类号： E01D2/02 , E01D1/00 , E01D19/02
摘要： PROBLEM TO BE SOLVED: To greatly reduce reinforcements of a rigid connection section between a steel main girder and a pier, enable workability to improve and, at the same time, to provide a joint structure between the steel main girder capable of being rationally designed and the pier and a joint method.
SOLUTION: A plurality of cell chambers 13 are formed of oppositely arranged webs and cell steel plates partitioning among these webs, a multi-chamber cell cross beam 10 provided with a slippage stop to both of the web and the cell steel plate or either one of them and a pair of steel girders 1 placed in the direction of the bridge axis on the pier P are included in each cell chamber 13, the multi-chamber cell cross beam 10 is placed between a pair of steel girders 1 to fit the cell chamber 13 to the upper part of a projection attached steel frame 30 burying the lower part in the pier, both end sections thereof are connected to the steel girder 1 to constitute the steel main girder G, and the cell chamber 13 of the multi-chamber cell cross beam 10 is filled with concrete to make the rigid connection between the steel main girder G and the pier P.
COPYRIGHT: (C)2004,JPO&NCIPI

5. 发明专利

JP2007023714A Composite floor slab using shape steel, composite floor slab bridge or composite girder bridge and its construction method 审中-公开
标题翻译：复合地板使用形状钢，复合地板砖桥或复合桥梁及其施工方法
公开(公告)号：JP2007023714A
公开(公告)日：2007-02-01
申请号：JP2005211153
申请日：2005-07-21
申请人： Jfe Engineering Kk , Jfe Steel Kk , Jfeエンジニアリング株式会社 , Jfeスチール株式会社 , Ohbayashi Corp , 株式会社大林組
发明人： NAKANISHI KATSUYOSHI , KAWAI YUTAKA , KOIZUMI MIKIO , ISHIZAWA TAKESHI , MOTOKI TAKUYA , TONO MITSUO , ABE KANAME
IPC分类号： E01D1/00 , E01D21/00 , E04B5/32
摘要： PROBLEM TO BE SOLVED: To provide a structure of a composite floor slab, a composite floor slab bridge or a composite girder bridge and a construction method using shape steel superior in economic efficiency and construction efficiency, and having high fatigue durability.
SOLUTION: A plurality of H shape steels 30 are juxtaposed in advance in the flange direction in a factory so that a flange is vertically positioned, and mutual lower flanges 30b of the adjacent H shape steels are connected by bolt joining or welding so that a corrugated plate or U shape steel projects upward via the corrugated plate or the U shape steel having the height of 1/2 or more of a flange interval of the H shape steel, and mutual vertical stiffening materials of the adjacent H shape steel welded in advance at a predetermined interval are connected via the bolt joining or the welding via a horizontal girder, and are carried up to a construction site thereafter. A plurality of reinforcements 36 are arranged at a predetermined interval in the axial direction of the H shape steel on an upper flange 30a of the H shape steel so as to become a right angle to the axial direction of the H shape steel, and cast-in-place concrete 38 is placed so as to cover these reinforcements.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供复合地板，复合地板桥梁或复合梁桥的结构以及使用经济效率和施工效率优良的，具有高疲劳耐久性的造型钢的施工方法。解决方案：多个H型钢30在工厂中在法兰方向上预先并置，使得凸缘垂直定位，并且相邻H形钢的相互下部凸缘30b通过螺栓接合或焊接连接波纹板或U形钢通过波纹板或H形钢的凸缘间隔的1/2以上的U型钢向上突出，并且相邻的H型钢焊接的相互垂直的加强材料预先规定的间隔经由螺栓接合或经由水平梁的焊接而连接，之后被运送到施工现场。多个加强件36在H型钢的上凸缘30a上以H形钢的轴向以预定间隔布置成与H型钢的轴向成直角，就地混凝土38被放置以覆盖这些增强件。版权所有（C）2007，JPO＆INPIT

6. 发明专利

JP2008267121A Method for evaluating rust forming influence factor of steel bridge 有权
标题翻译：评估钢结构影响因素的方法
公开(公告)号：JP2008267121A
公开(公告)日：2008-11-06
申请号：JP2008003307
申请日：2008-01-10
申请人： Jfe Engineering Kk , Jfe Steel Kk , Jfeエンジニアリング株式会社 , Jfeスチール株式会社
发明人： KATO SHINJI , MURAKAMI TAKUYA , NAKANISHI KATSUYOSHI , MATSUDA MINORU , KAGE ISAMU , KANO ISAMU
IPC分类号： E01D1/00 , G01N17/00
摘要： PROBLEM TO BE SOLVED: To provide a method for evaluating a rust forming influence factor of a steel bridge capable of reducing a manufacturing cost and a life cycle cost of the steel bridge. SOLUTION: Surfaces of a left main girder 10 and a right main girder 20 are divided for each portion of the predetermined 24 places depending on a degree of an influence to a rust forming by a plurality of influence factors which is different from the rust forming each other. An incoming salt component atmosphere coefficient, a surface salt adhesion coefficient, a washing loss coefficient and a humidity coefficient for each portion are decided based on a plurality of influence factors arranged between the range of 0-1.0 at the divided each portion as a value reflecting the degree of an influence to the rust forming and evaluate the rust property by respectively multiplying each coefficient and the rust property forecasted to be formed after 100 years later for each portion of the 24 places and by calculating the rust thickness forecasted to be finally formed in each portion of the 24 places. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够降低钢桥的制造成本和寿命周期成本的钢桥的生锈影响因素的评价方法。解决方案：左主梁10和右主梁20的表面根据多个影响因素对锈锈形成的影响程度被划分到预定的24个位置的每一部分生锈相互形成。基于分布在每个部分的0-1.0之间的多个影响因素来确定每个部分的进入的盐分气氛系数，表面盐粘附系数，洗涤损失系数和湿度系数作为反映对锈蚀形成的影响程度，并通过分别乘以在24个地点的每一部分分别乘以在100年后形成的每个系数和防锈性，并计算预测最终形成的锈蚀厚度 24个地方的每个部分。版权所有（C）2009，JPO＆INPIT

7. 发明专利

JP2014014831A Fatigue strength improving method of weld zone and welded joint 审中-公开
标题翻译：焊接区和焊接接头的疲劳强度改进方法
公开(公告)号：JP2014014831A
公开(公告)日：2014-01-30
申请号：JP2012153164
申请日：2012-07-09
申请人： Jfe Steel Corp , Jfeスチール株式会社 , Jfe Engineering Corp , Jfeエンジニアリング株式会社
发明人： NAKANISHI KATSUYOSHI , MORIKAGE YASUSHI , OKADA ATSUSHI , DOI MAKOTO , TOMO HAJIME
IPC分类号： B23K31/00
摘要： PROBLEM TO BE SOLVED: To provide a fatigue strength improving method for improving fatigue strength of a weld zone in a steel structure such as a steel bridge by introducing compressive residual stress, without imparting deformation causing a new stress concentration part to the weld zone, the method being suitably used for hammer peening.SOLUTION: A part of a base material surface separated from a weld toe part is plastically deformed by vertically striking to the base material surface, desirably, by striking so that a part of a plastic deformation area by striking, gradually superpose and moves to the outside from the toe part vicinal side by a chipper of a flat shape with a chamfered striking surface, and the compressive residual stress is introduced into the weld toe part. When forming a belt-like plastic deformation area on which a recess characteristic value (the product of the maximum depth and a width)(mm) has a predetermined value by contacting with the weld toe part, the weld toe part is stricken by a chamfered part of the flat part periphery of the striking surface of the chipper, and the base material is stricken by the flat part. When assuming that a width of the striking surface of the chipper used for striking as B, a part within B/4 from the toe part of the base material surface is plastically deformed by striking.
摘要翻译：要解决的问题：为了提供一种通过引入压缩残余应力来提高钢桥等钢结构中的焊接区域的疲劳强度的疲劳强度提高方法，而不会赋予焊接区域新的应力集中部分的变形，方法适用于锤击硬化。解决方案：从焊缝趾部分离的基材表面的一部分通过垂直撞击基材表面而被塑性变形，理想地是通过冲击使塑料变形区域的一部分被撞击通过具有倒角冲击面的扁平形状的切片机逐渐地从趾部部分附近向外侧移动，并且将压缩残余应力引入焊接趾部。当通过与焊接趾部部分接触而形成凹部特征值（最大深度和宽度的乘积）（mm）的预定值）的带状塑性变形区域时，焊接脚趾部分被倒角切片机的打击面的平坦部分周边的一部分，并且基材受到平坦部分的打击。当假设用于打击的切屑机的打击表面的宽度为B时，来自基材表面的趾部的B / 4内的部分通过撞击而塑性变形。

8. 发明专利

JP2012176437A Method for improving fatigue strength of weld part and weld joint 有权
标题翻译：改善焊接部位和焊接接头疲劳强度的方法
公开(公告)号：JP2012176437A
公开(公告)日：2012-09-13
申请号：JP2012000998
申请日：2012-01-06
申请人： Jfe Steel Corp , Jfe Engineering Corp , Jfeエンジニアリング株式会社 , Jfeスチール株式会社
发明人： NAKANISHI KATSUYOSHI , MORIKAGE YASUSHI , OKADA ATSUSHI , DOI MAKOTO , TOMO HAJIME
IPC分类号： B23K31/00 , C21D7/04
摘要： PROBLEM TO BE SOLVED: To provide a fatigue strength improving method for improving fatigue strength of a weld part of a steel structure like a steel bridge suitable for hammer peening by introducing a compressive residual stress without imparting any deformation forming a new stress concentration part in the weld part.SOLUTION: A part of the surface of a base material, which is apart from a weld toe, is struck perpendicularly to the surface of the base material with a flat chipper whose striking face is chamfered. Preferably, striking is moved gradually from the vicinity of the weld toe to the outside so that part of a plastic deformation area caused by striking is overlapped, and the compressive residual stress is introduced into the weld toe. When forming a belt-like plastic deformation area having a described value of a recess characteristics (the product of the maximum depth and width)(mm) while bringing it into contact with the weld toe, the weld toe is struck with the chamfered part of the periphery of the flat part of the chipper striking face, and the base material is struck by the flat part. When the width of the striking face of the chipper used for striking is made B, plastic deformation is performed by striking the portion within B/4 from the weld toe of the surface of the base material.
摘要翻译：要解决的问题：提供一种疲劳强度改善方法，用于通过引入压缩残余应力而改善形成新的应力集中的变形来提高钢结构的钢结构的疲劳强度，如适用于锤击锤的钢桥部分焊接部分。解决方案：将基材的表面与焊趾部分分开的一部分，其平面切片机的冲击面被倒角地垂直于基材的表面。优选地，打击从焊趾附近逐渐移动到外部，使得由撞击引起的塑性变形区域的一部分重叠，并且压缩残余应力被引入焊缝趾部。当形成具有所述凹槽特性值（最大深度和宽度的乘积）（mm 2 ）的带状塑性变形区域，同时使其与焊接脚趾，焊接脚趾与切片机打击面的平坦部分的周边的倒角部分碰撞，基部材料被平坦部分撞击。当用于打击的切片机的打击面的宽度为B时，通过从基材的表面的焊接脚趾撞击B / 4内的部分来进行塑性变形。版权所有（C）2012，JPO＆INPIT

9. 发明专利

JP2012202096A Plate girder bridge and box girder bridge 审中-公开
标题翻译：平板铁路桥和桥梁桥梁
公开(公告)号：JP2012202096A
公开(公告)日：2012-10-22
申请号：JP2011067078
申请日：2011-03-25
申请人： Jfe Steel Corp , Jfe Engineering Corp , Jfeエンジニアリング株式会社 , Jfeスチール株式会社
发明人： NAKANISHI KATSUYOSHI , KATO SHINJI , TOMO HAJIME
IPC分类号： E01D22/00
摘要： PROBLEM TO BE SOLVED: To provide a plate girder bridge and a box girder bridge suitable for a location with much salinity flying due to wind.SOLUTION: A lattice-like plate-like member 9 is mounted to a girder lower flange 4 of a main girder 2, which is on the upwind side, to be perpendicular to an angle at which wind is separated from the outer end of the girder lower flange or to be inclined at 30 to 45 degrees from the lower flange. Preferably, a corner is formed at least at one end in the opening direction of an opening of the lattice-like plate-like member 9 and the plate-like member 9 is mounted on the lower flange such that the opening linearly formed is on the upwind side. More preferably, the width of the lattice-like plate-like member 9 is larger than that of the lower flange and the opening consists of three or more rows of opening parts in a direction perpendicular to a bridge axis.
摘要翻译：要解决的问题：提供一种板梁桥梁和适用于由于风造成大量盐度飞扬的位置的箱梁桥梁。解决方案：格子状的板状构件9安装在主梁2的在上风侧的梁下凸缘4垂直于风从外端分离的角度或从下法兰倾斜30至45度。优选地，在格子状的板状构件9的开口的开口方向的至少一端形成角部，并且将板状构件9安装在下凸缘上，使得线性形成的开口位于上风侧。更优选地，格子状的板状部件9的宽度大于下凸缘的宽度，并且开口由垂直于桥轴线的方向的三列或更多列的开口部组成。版权所有（C）2013，JPO＆INPIT

10. 发明专利

JP2011196052A Method of preventing flying salinity from adhered to girder of plate girder bridge, box girder bridge, and girder bridge 有权
标题翻译：防止钢板吊架，钢丝绳桥和钢丝绳桥梁吊坠发生飞溅的方法
公开(公告)号：JP2011196052A
公开(公告)日：2011-10-06
申请号：JP2010062269
申请日：2010-03-18
申请人： Jfe Engineering Corp , Jfe Steel Corp , Jfeエンジニアリング株式会社 , Jfeスチール株式会社
发明人： KATO SHINJI , NAKANISHI KATSUYOSHI , TOMO HAJIME
IPC分类号： E01D1/00 , E01D2/02 , E01D2/04 , E01D21/00
摘要： PROBLEM TO BE SOLVED: To provide a method of preventing flying salinity from adhered to the girder of a plate girder bridge and a box girder bridge comprising respective plate girders and box girders, and a girder bridge which is suitably used for steel bridges which are shortened in life due to the adhesion of flying salinity thereto promoting rusting and which reduces the adhesion of flying salinity thereto.SOLUTION: This plate girder bridge includes a plurality of plate girders and auxiliary installations for a plate girder bridge such as a means for decelerating the velocity of a circulation flow produced between the adjacent plate girders, for example, members which are installed on the plate girders or between the adjacent plate girders and structured so as to decelerate the velocity while allowing the circulation flow to pass therethrough, and an inspection path and a transportation tube which are installed at positions where the shearing force of a burble flow from the lower surface producing the circulation flow is weakened. A circulation flow deceleration means is installed on the girders or between the girders beforehand so that the velocity of the circulation flow produced between the plurality of girders can be decelerated.
摘要翻译：要解决的问题：提供一种防止飞散盐度附着在板梁桥梁和包括各自的板梁和箱梁的箱梁的梁的方法，以及适用于钢桥的长梁，其被缩短由于飞行盐度的粘附促进生锈，并且降低了飞溅盐度对其的粘附。解决方案：该板梁大桥包括多个板梁和用于板梁桥的辅助设备，例如用于减速的装置在相邻的板梁之间产生的循环流，例如安装在板梁上或相邻的板梁之间的构件，以便使流通速度减慢，同时允许循环流动通过;以及检查路径和运输管，其安装在来自下部苏打的燃烧流动的剪切力的位置产生循环流动的表面减弱。循环流减速装置预先安装在桁架或桁架之间，使得在多个桁材之间产生的循环流动的速度可以减速。

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