CN203701299U - Steel structure conducive to reducing the stress of steel members - Google Patents
Steel structure conducive to reducing the stress of steel members Download PDFInfo
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Abstract
Description
技术领域 technical field
本新型涉及一种建材构件,具体是指一种有利于消减钢构件应力的钢结构。 The model relates to a building material component, in particular to a steel structure which is beneficial to reduce the stress of the steel component.
背景技术 Background technique
常规建材中的钢构件多采用沿长度方向截面尺寸不变的做法,在轴向受力时变形量小,刚度大。钢构件处于弹性工作状态并在轴向力作用下时其轴向变形量与力成正比,因其变形量较小,当个别钢构件节点两侧的结构膨胀或收缩变形较大时,将使钢结构产生较大的内应力和应力集中区,从而使钢构件出现安全储备降低或出现钢构件破坏的隐患,因此该类钢构件在轴向变形时存在缺陷。 The steel members in conventional building materials mostly use the method of keeping the cross-sectional size constant along the length direction, and the deformation is small and the rigidity is large when the axial force is applied. When the steel member is in an elastic working state and under the action of axial force, its axial deformation is proportional to the force. Because of its small deformation, when the expansion or contraction deformation of the structure on both sides of individual steel member nodes is large, it will cause The steel structure produces large internal stress and stress concentration areas, which reduces the safety reserve of steel components or the hidden danger of steel component damage. Therefore, this type of steel components has defects in axial deformation.
发明内容 Contents of the invention
为了克服上述问题,本实用新型提供了一种可以减少钢构件上应力集中区,提高钢构件安全可靠性的钢结构。 In order to overcome the above problems, the utility model provides a steel structure that can reduce the stress concentration area on the steel component and improve the safety and reliability of the steel component.
为实现上述目的,本实用新型提供的技术方案是: In order to achieve the above object, the technical solution provided by the utility model is:
有利于消减钢构件应力的钢结构,包括型钢本体;所述型钢本体设有上、中、下三部分;所述型钢上部分的一端和下部分的一端分别设有外螺纹接头和内螺纹接头,型钢中部分的两端分别设有外螺纹接头和内螺纹接头;型钢上部分设有外螺纹接头的一端嵌置于型钢中部分内螺纹接头内,型钢中部分设有外螺纹接头的一端嵌置于型钢下部分内螺纹接头内;所述外螺纹接头和内螺纹接头上均至少设有第一螺纹段和第二螺纹段,第一螺纹段的齿高低于第二螺纹段的齿高,内螺纹接头螺纹段与外螺纹接头相匹;在所述型钢本体中部分和下部分内螺纹接头处还设有支撑板和翼板;所述支撑板一端固定在内螺纹接头上,另一端斜向下延伸,支撑板固定在内螺纹接头的一端与型钢本体的间距小于支撑板另一端与型钢本体的间距;所述翼板一侧边与支撑板内侧焊接,另一侧边与型钢本体焊接。 A steel structure conducive to reducing the stress of steel members, including a steel body; the steel body is provided with upper, middle and lower parts; one end of the upper part and one end of the lower part of the steel are respectively provided with external thread joints and internal thread joints The two ends of the middle part of the shaped steel are respectively provided with external threaded joints and internal threaded joints; Placed in the internally threaded joint of the lower part of the section steel; both the externally threaded joint and the internally threaded joint are provided with at least a first thread segment and a second thread segment, the tooth height of the first thread segment is lower than the tooth height of the second thread segment, The threaded section of the internally threaded joint matches the externally threaded joint; there are also support plates and wing plates at the internally threaded joints of the middle part and the lower part of the steel body; one end of the support plate is fixed on the internally threaded joint, and the other end is inclined Extending downward, the distance between one end of the support plate fixed to the internally threaded joint and the steel body is smaller than the distance between the other end of the support plate and the steel body; one side of the wing plate is welded to the inner side of the support plate, and the other side is welded to the steel body .
所述外螺纹接头上设有径向向外的第二台肩和径向向外的第二扭转台肩,内螺纹接头上与外螺纹接头第二台肩和第二扭转台肩相匹配的第一台肩和第一扭转台肩;在第二台肩和第二扭转台肩之间至少设置有第一外螺纹段和第二外螺纹段;第一台肩和第一扭转台肩之间至少设有第一内螺纹段和第二内螺纹段。 The externally threaded joint is provided with a radially outward second shoulder and a radially outward second twisted shoulder, and the internally threaded joint matches the second shoulder and the second twisted shoulder of the externally threaded joint A first shoulder and a first twisted shoulder; at least a first external thread segment and a second external thread segment are disposed between the second shoulder and the second twisted shoulder; between the first shoulder and the first twisted shoulder There are at least a first internal thread segment and a second internal thread segment between them.
在所述第一台肩和第一扭转台肩之间设有第一螺纹段、第二螺纹段、第三螺纹段和第四螺纹段;所述第一螺纹段、第二螺纹段、第三螺纹段和第四螺纹段的齿高之比为1∶2∶3∶4;所述内螺纹接头螺纹段与外螺纹接头螺纹段相匹配。 A first thread segment, a second thread segment, a third thread segment and a fourth thread segment are provided between the first shoulder and the first twist shoulder; the first thread segment, the second thread segment, the first thread segment The tooth height ratio of the third thread segment and the fourth thread segment is 1:2:3:4; the thread segment of the internal thread joint matches the thread segment of the external thread joint.
上述技术方案的有益之处在于: The benefits of the above technical solution are:
1、本新型提供了一种有利于消减钢构件应力的钢结构,其通过加设支撑板和翼板的方式,大大降低了型钢本体上各个应力集中区的应力,避免某个应力集中区应力太大导致型钢本体发生变形;而将型钢本体分为三部分,分别采用内螺纹接头和外螺纹接头相互紧固连接,通过降低邻近第二台肩的第一外螺纹的齿高,能够有效降低第一外螺纹的应力峰值,将内螺纹接头与外螺纹接头相对应配合,能够使受力更均匀,延长使用寿命,提高钢构件的安全可靠度。 1. This new model provides a steel structure that is conducive to reducing the stress of steel members. By adding support plates and wing plates, the stress in each stress concentration area on the steel body is greatly reduced, and the stress in a certain stress concentration area is avoided. If the steel body is too large, the shape steel body will be deformed; the shape steel body is divided into three parts, and the internal thread joint and the external thread joint are used to fasten and connect each other. By reducing the tooth height of the first external thread adjacent to the second shoulder, it can be effectively reduced. The stress peak value of the first external thread, matching the internal thread joint and the external thread joint correspondingly, can make the stress more uniform, prolong the service life, and improve the safety and reliability of the steel member.
2、本新型在内、外螺纹接头上均设有台肩和扭转台肩,型钢三个部分通过螺纹接头连接时,外螺纹接头的台肩和扭转台肩分别抵靠在内螺纹接头的台肩和扭转台肩上,可以将部分应力传递至与内螺纹接头固定连接的支撑板和翼板上,对型钢本体的应里起到一个缓释作用,有效的提高本新型的结构稳定性。 2. There are shoulders and torsion shoulders on the inner and outer threaded joints of this new type. When the three parts of the section steel are connected through the threaded joints, the shoulders of the outer threaded joints and the torsional shoulders are respectively against the platform of the inner threaded joint. On the shoulder and the torsion shoulder, part of the stress can be transmitted to the support plate and the wing plate fixedly connected with the internal thread joint, which plays a role in slowing down the stress of the steel body and effectively improves the structural stability of the new model.
3、本新型外螺纹接头的四个螺纹段的齿高比例为1∶2∶3∶4,内螺纹接头的四个螺纹段的齿高比例与外螺纹接头的螺纹段相匹配,在型钢本体受到轴向力时,可以使型钢本体受力均匀,防止型钢某部分因受力较大发生形变,对钢构件的安全可靠性造成影响。 3. The tooth height ratio of the four threaded sections of the new externally threaded joint is 1:2:3:4, and the tooth height ratio of the four threaded sections of the internally threaded joint matches the threaded section of the externally threaded joint. When the axial force is applied, the steel body can be evenly stressed, preventing a certain part of the steel from being deformed due to a large force, which will affect the safety and reliability of the steel member.
下面结合附图和具体实施例对本新型作进一步的说明。 Below in conjunction with accompanying drawing and specific embodiment the present invention will be further described.
附图说明 Description of drawings
图1为本新型部分结构示意图; Fig. 1 is the partial structural representation of the present invention;
图2为图1中A部分放大图。 Fig. 2 is an enlarged view of part A in Fig. 1 .
具体实施方式 Detailed ways
一种有利于消减钢构件应力的钢结构,它包括型钢本体1,型钢本体1在沿长度方向上设有多块翼板2,设置翼板2,增加了荷载传递路径,降低型钢本体1应力峰值。经测试,型钢本体1在承受轴向力时,型钢本体和施加于型钢本体轴向力的构件的平面交点的应力集中被分散呈一个狭长的带状应力区域,峰值应力远远小于未增设翼板2时的值,应力峰值计算数据减少50%左右,大大提高了结构安全可靠度。 A steel structure conducive to reducing the stress of steel members, which includes a steel body 1, the steel body 1 is provided with a plurality of wing plates 2 along the length direction, the wing plates 2 are arranged, the load transmission path is increased, and the stress of the steel body 1 is reduced peak. After testing, when the steel body 1 bears the axial force, the stress concentration at the plane intersection point of the steel body and the member applying the axial force to the steel body is dispersed to form a narrow and long belt-shaped stress area, and the peak stress is much smaller than that without additional wings. The value of plate 2, the stress peak calculation data is reduced by about 50%, which greatly improves the safety and reliability of the structure.
所述型钢本体1为圆钢管,型钢本体1直径为351mm,壁厚为12mm;所述型钢本体1由上、中、下三部分型钢通过螺纹接头连接组成;型钢上部分100和下部分的一端分别设有外螺纹接头3和内螺纹接头4,型钢中部分101与型钢上部分100连接的一端设有内螺纹接头4,另一端设有外螺纹接头3与型钢下部分内螺纹接头4连接;其中: The profiled steel body 1 is a round steel pipe, the diameter of the profiled steel body 1 is 351mm, and the wall thickness is 12mm; the profiled steel body 1 is composed of upper, middle and lower sections of profiled steel connected by threaded joints; the upper part 100 of the profiled steel and one end of the lower part An externally threaded joint 3 and an internally threaded joint 4 are respectively provided, and one end where the middle part 101 of the shaped steel is connected to the upper part 100 of the shaped steel is provided with an internally threaded joint 4, and the other end is provided with an externally threaded joint 3 to connect with the internally threaded joint 4 of the lower part of the shaped steel; in:
所述内螺纹接头4上设有径向向外的第一台肩40和径向向内的第一扭转台肩41;第一台肩40与第一扭转台肩41通过内螺纹段固定连接;所述外螺纹接头上3设有径向向外的第二台肩30和径向向外的第二扭转台肩31,型钢上部分100设有外螺纹接头3的一端嵌置在型钢中部分101内螺纹接头4内,型钢中部分101设有外螺纹接头3的一端嵌置在型钢下部分内螺纹接头4内,使第二扭转台肩31与第一扭转台肩41紧密接触,第二台肩30与第一台肩40相接触;外螺纹接头3对应于第二台肩30与第二扭转台肩31间设置轴向延伸的外螺纹段,该外螺纹段与内螺纹段相匹配。 The internally threaded joint 4 is provided with a radially outward first shoulder 40 and a radially inward first twisted shoulder 41; the first shoulder 40 and the first twisted shoulder 41 are fixedly connected by an internal thread segment ; The externally threaded joint 3 is provided with a radially outward second shoulder 30 and a radially outward second twisted shoulder 31, and the upper part 100 of the shaped steel is provided with one end of the externally threaded joint 3 embedded in the shaped steel In the internally threaded joint 4 of part 101, one end of the middle part 101 of the shaped steel with the externally threaded joint 3 is embedded in the internally threaded joint 4 of the lower part of the shaped steel, so that the second twisted shoulder 31 is in close contact with the first twisted shoulder 41, and the second twisted shoulder 31 is in close contact with the first twisted shoulder 41. The two shoulders 30 are in contact with the first shoulder 40; the externally threaded joint 3 is corresponding to the second shoulder 30 and the second torsion shoulder 31, and an axially extending external thread segment is arranged between the external thread segment and the internal thread segment. match.
型钢本体三部分分别通过外螺纹接头3和内螺纹接头4内的外螺纹段和内螺纹段紧固连接,外螺纹接头3的外螺纹包括第一外螺纹32、第二外螺纹33、第三外螺纹34及第四外螺纹35,所述第一外螺纹32邻近第二台肩30,第一外螺纹32的齿高要小于外螺纹接头3上其余外螺纹的齿高;第一外螺纹32、第二外螺纹33、第三外螺纹34及第三外螺纹35的齿高之比为1∶2∶3∶4;内螺纹接头4上的内螺纹与外螺纹接头3上的外螺纹相匹配。 The three parts of the steel body are tightly connected by the external thread section and the internal thread section in the external thread joint 3 and the internal thread joint 4 respectively. The external thread of the external thread joint 3 includes a first external thread 32, a second external thread 33, a third external thread External thread 34 and fourth external thread 35, the first external thread 32 is adjacent to the second shoulder 30, the tooth height of the first external thread 32 is smaller than the tooth height of the remaining external threads on the externally threaded joint 3; the first external thread 32. The tooth height ratio of the second external thread 33, the third external thread 34 and the third external thread 35 is 1:2:3:4; the internal thread on the internal thread joint 4 and the external thread on the external thread joint 3 match.
通过将型钢本体分为三部分,分别采用内螺纹接头4和外螺纹接头3相互紧固连接,通过降低邻近第二台肩30的第一外螺纹32的齿高,能够有效降低第一外螺纹32处的应力峰值,将内螺纹接头4与外螺纹接头3相对应配合,能够使受力更均匀,延长使用寿命,降低了使用成本。 By dividing the section steel body into three parts, the inner threaded joint 4 and the outer threaded joint 3 are fastened and connected to each other, and by reducing the tooth height of the first outer thread 32 adjacent to the second shoulder 30, the first outer thread can be effectively reduced. For the stress peak at 32, matching the internally threaded joint 4 with the externally threaded joint 3 can make the stress more uniform, prolong the service life, and reduce the use cost.
在型钢中部分101和下部分内螺纹接头4处还都设有支撑板5,支撑板5一端固定在型钢本体1内螺纹接头4上,另一端向下延伸,可固定在其他构件上,支撑板5与型钢本体1固定连接的一端与型钢本体1之间的距离远远小于支撑板5另一端与型钢本体1之间的距离。在支撑板5与型钢本体1之间设置设有翼板2,翼板2一侧边与支撑板5内侧焊接,另一侧边与型钢本体1外侧焊接。 A support plate 5 is also provided at the middle part 101 of the profiled steel and the internally threaded joint 4 of the lower part. One end of the support plate 5 is fixed on the internally threaded joint 4 of the profiled steel body 1, and the other end extends downwards to be fixed on other components to support The distance between one end of the plate 5 fixedly connected with the shaped steel body 1 and the shaped steel body 1 is much smaller than the distance between the other end of the support plate 5 and the shaped steel body 1 . A wing plate 2 is arranged between the support plate 5 and the shaped steel body 1 , one side of the wing plate 2 is welded to the inner side of the support plate 5 , and the other side is welded to the outer side of the shaped steel body 1 .
采用加设支撑板5和翼板2的方式,大大降低了型钢本体1上各个应力集中区的应力,避免某个应力集中区应力太大导致型钢本体1发生变形;另外,如果降低型钢本体的厚度,也同样可以达到相同效果,因此,本新型不仅提高了钢结构的安全可靠度,还可以为企业节省大量钢材,降低成本。 The way of adding support plate 5 and wing plate 2 greatly reduces the stress of each stress concentration area on the steel body 1, avoiding the deformation of the steel body 1 caused by too much stress in a certain stress concentration area; in addition, if the steel body is reduced The thickness can also achieve the same effect. Therefore, this new type not only improves the safety and reliability of the steel structure, but also saves a lot of steel for the enterprise and reduces the cost.
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