CN105064503A - Steel tube and core tube mixed structure - Google Patents
Steel tube and core tube mixed structure Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 179
- 239000010959 steel Substances 0.000 title claims abstract description 179
- 239000004567 concrete Substances 0.000 claims abstract description 14
- 238000010276 construction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
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- 239000011150 reinforced concrete Substances 0.000 description 1
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Abstract
本发明公开了一种核心筒混合结构,包括:包括钢柱、钢梁、两个等边角钢、两个不等边角钢、外伸端板、高强度螺栓、混凝土。本发明提供的核心筒混合结构具有初始刚度大、屈服强度高、滞回曲线饱满、抗震性能好的特点。
The invention discloses a core tube hybrid structure, which comprises: steel columns, steel beams, two equilateral angle steels, two unequal angle steels, overhanging end plates, high-strength bolts and concrete. The core tube hybrid structure provided by the invention has the characteristics of large initial rigidity, high yield strength, plump hysteresis curve and good seismic performance.
Description
技术领域technical field
本发明属于结构工程钢结构技术领域,具体涉及钢管核心筒混合结构。The invention belongs to the technical field of structural engineering steel structures, and in particular relates to a steel pipe core tube hybrid structure.
背景技术Background technique
目前,型钢混凝土柱(内部型钢为钢管)与型钢混凝土梁节点做法为:钢管砼柱中钢管在型钢梁上翼缘处设置一块环板,型钢梁中钢梁翼缘与环板焊接,型钢梁中钢筋部分穿型钢,部分弯折绕过钢管。这种节点形式施工单位须在加工厂或现场对钢管开好穿钢筋孔洞,部分梁钢筋要事先进行弯弧,施工现场往往因钢筋太多导致钢筋相碰无法施工,同时对型钢混凝土柱中的钢管开孔造成了对柱截面的损伤,且施工周期长。At present, the joint method between the steel concrete column (the inner steel pipe is steel pipe) and the steel concrete beam is as follows: the steel pipe in the steel pipe concrete column is provided with a ring plate at the upper flange of the steel beam, the steel beam flange in the steel beam is welded to the ring plate, and the steel bar in the steel beam Through section steel, partly bent around the steel pipe. The construction unit of this kind of joint form must open holes for the steel pipes to pass through the steel bars in the processing plant or on site. The opening of the steel pipe caused damage to the column section, and the construction period was long.
在以往的工程实践中,通常做法是在钢管钢柱上焊接栓钉,或将钢筋混凝土墙的水平分布钢筋直接与钢管钢柱焊接。而在罕遇地震、飓风等自然灾害作用下,结构进入弹塑性状态或塑性状态,此时钢管钢柱和钢筋钢梁之间的相互作用力很大,传统的连接方式很难保证钢管钢柱与钢梁的协同工作,而钢管钢柱与钢筋钢梁的连接一旦破坏,结构的抗侧刚度、延性和耗能能力将明显降低,甚至导致整个结构的倒塌破坏。此外,传统连接中钢梁中的钢筋和钢管钢柱中的钢管需要在现场焊接,焊接质量不宜保证,且现场焊接工作量大,增加了施工难度和费用。In the past engineering practice, it is common practice to weld studs on the steel pipe steel column, or directly weld the horizontal distribution reinforcement of the reinforced concrete wall to the steel pipe steel column. However, under the action of natural disasters such as earthquakes and hurricanes, the structure enters an elastic-plastic state or a plastic state. At this time, the interaction force between the steel pipe steel column and the reinforced steel beam is very large. It is difficult to ensure that the steel pipe steel column Cooperative work with steel beams, and once the connection between steel pipe steel columns and reinforced steel beams is damaged, the lateral stiffness, ductility and energy dissipation capacity of the structure will be significantly reduced, and even lead to the collapse of the entire structure. In addition, the steel bars in the steel beams in the traditional connection and the steel pipes in the steel pipe steel columns need to be welded on site. The welding quality is not suitable to be guaranteed, and the welding workload on site is large, which increases the difficulty and cost of construction.
发明内容Contents of the invention
本发明为了克服以上现有技术存在的不足,提供了一种初始刚度大、屈服强度高、滞回曲线饱满、抗震性能好的钢管核心筒混合结构。In order to overcome the deficiencies in the prior art above, the present invention provides a hybrid steel pipe core tube structure with high initial rigidity, high yield strength, full hysteretic curve and good seismic performance.
本发明的目的通过以下的技术方案实现:The purpose of the present invention is achieved through the following technical solutions:
一种核心筒混合结构,包括:包括钢柱、钢梁、两个等边角钢、两个不等边角钢、外伸端板、高强度螺栓、混凝土,其中:A core tube hybrid structure, including: including steel columns, steel beams, two equal-edge angle steels, two unequal-edge angle steels, overhanging end plates, high-strength bolts, and concrete, wherein:
钢柱为钢管,包括上翼缘、下翼缘及位于中部的腹板,钢柱的上翼缘、下翼缘开有若干螺栓孔;钢梁为H型钢,钢梁近端的上下翼缘各开有若干螺栓孔;外伸端板开有若干螺栓孔;两个不等边角钢分别为顶部角钢和底部角钢,顶部角钢和底部角钢与外伸端板连接一侧开若干螺栓孔,与钢梁连接一侧开若干螺栓孔;两个等边角钢包括左腹板角钢和右腹板角钢,左腹板角钢和右腹板角钢的两个面均开有若干螺栓孔,混凝土浇筑在钢管内;The steel column is a steel pipe, including the upper flange, the lower flange and the web in the middle. There are several bolt holes on the upper and lower flanges of the steel column; the steel beam is H-shaped steel, and the upper and lower flanges at the proximal end of the steel beam are respectively opened There are a number of bolt holes; there are a number of bolt holes in the extended end plate; the two unequal angle steels are the top angle steel and the bottom angle steel respectively, and a number of bolt holes are opened on the side connecting the top angle steel and the bottom angle steel with the extended end plate, and are connected with the steel beam A number of bolt holes are opened on one side of the connection; the two equilateral angle steels include the left web angle steel and the right web angle steel, and a number of bolt holes are opened on both sides of the left web angle steel and the right web angle steel, and the concrete is poured in the steel pipe;
顶部角钢的水平面与钢梁的上翼缘通过高强度螺栓连接,顶部角钢的竖直面与钢柱通过穿过外伸端板的高强度螺栓连接;底部角钢的水平面与钢梁的下翼缘通过摩擦型高强度螺栓连接,底部角钢的竖直面与钢柱侧面通过穿过外伸端板的摩擦型高强度螺栓连接;左腹板角钢的第一竖直面和右腹板角钢的第一竖直面夹着钢梁的腹板并且通过摩擦型高强度螺栓连接,左腹板角钢的第二竖直面、外伸端板与钢柱侧面通过摩擦型高强度螺栓连接,右腹板角钢的第二竖直面、外伸端板与钢柱的上翼缘、下翼缘通过摩擦型高强度螺栓连接。The horizontal plane of the top angle steel is connected with the upper flange of the steel beam through high-strength bolts, the vertical plane of the top angle steel is connected with the steel column through high-strength bolts passing through the overhanging end plate; the horizontal plane of the bottom angle steel is connected with the lower flange of the steel beam The vertical surface of the bottom angle steel is connected with the side of the steel column through friction high-strength bolts passing through the overhanging end plate; the first vertical surface of the left web angle steel and the second vertical surface of the right web angle steel One vertical plane sandwiches the web of the steel beam and is connected by friction-type high-strength bolts; the second vertical plane of the angle steel of the left web, the overhanging end plate and the side of the steel column are connected by friction-type high-strength bolts; the right web The second vertical surface of the angle steel, the overhanging end plate and the upper and lower flanges of the steel column are connected by friction-type high-strength bolts.
优选的,所述高强度螺栓为摩擦型高强度螺栓。Preferably, the high-strength bolts are friction-type high-strength bolts.
优选的,所述高强度螺栓为单边螺栓。Preferably, the high-strength bolts are single-sided bolts.
本发明相对于现有技术具有如下的优点:Compared with the prior art, the present invention has the following advantages:
1、钢柱、钢梁和两个等边角钢之间紧密贴合在一起,洞口相对,采用高强度螺栓连接,不采用任何焊接工艺,钢材不变脆,初始刚度大、屈服强度高、滞回曲线饱满、抗震性能好。1. Steel columns, steel beams and two equilateral angle steels are tightly fitted together, the openings are facing each other, connected by high-strength bolts, without any welding process, the steel will not be brittle, the initial rigidity is large, the yield strength is high, and the hysteresis The return curve is full and the anti-seismic performance is good.
2、本发明创造性地将钢管混凝土柱、顶底角钢、全螺栓连接节点组合结合起来,摩擦型高强度螺栓连接承载力高,动力性能好,采用顶底角钢—全螺栓连接节点,改善了钢结构梁柱节点的延性,增强了节点抗震耗能能力,进一步提高了结构整体的抗震性能。2. The invention creatively combines steel pipe concrete columns, top and bottom angle steels, and full-bolt connection nodes. The friction-type high-strength bolt connection has high bearing capacity and good dynamic performance. The use of top and bottom angle steel-full bolt connection nodes improves the steel The ductility of the structural beam-column joints enhances the seismic energy dissipation capacity of the joints and further improves the overall seismic performance of the structure.
附图说明Description of drawings
图1为本发明的的钢管混凝土柱与型钢混凝土梁连接节点立体图。Fig. 1 is a three-dimensional view of the connection node between the steel pipe concrete column and the steel concrete beam of the present invention.
图2为图1的纵向剖视图,Figure 2 is a longitudinal sectional view of Figure 1,
图3为钢管混凝土柱的开洞示意图。Figure 3 is a schematic diagram of the opening of the steel tube concrete column.
图4是图1的横向剖视图。FIG. 4 is a transverse sectional view of FIG. 1 .
具体实施方式Detailed ways
下面结合附图和实施例对本发明作进一步说明。The present invention will be further described below in conjunction with drawings and embodiments.
如图1至图4所示的钢管核心筒混合结构,包括钢柱1、钢梁2、两个等边角钢3、两个不等边角钢4、外伸端板5、高强度螺栓6、混凝土7,其中:The steel pipe core tube hybrid structure shown in Figures 1 to 4 includes steel columns 1, steel beams 2, two equilateral angle steels 3, two unequal angle steels 4, overhanging end plates 5, high-strength bolts 6, Concrete 7, of which:
钢柱1为钢管,钢柱1的翼缘开有8个螺栓孔;钢梁2为H型钢,包括上下两个翼缘及位于中部的腹板,钢梁2近端的上下翼缘各开有4个螺栓孔;外伸端板5开有8个螺栓孔;两个不等边角钢4分别为顶部角钢41和底部角钢42,顶部角钢41和底部角钢42与外伸端板5连接一侧开2个孔,与钢梁2连接一侧开4个孔;两个等边角钢3包括左腹板角钢31和右腹板角钢(图中被钢梁遮挡),左腹板角钢31和右腹板角钢的2个面均开有2个螺栓孔,混凝土7浇筑在钢管内。The steel column 1 is a steel pipe, and the flange of the steel column 1 has 8 bolt holes; the steel beam 2 is an H-shaped steel, including the upper and lower flanges and the web in the middle, and the upper and lower flanges at the proximal end of the steel beam 2 are respectively opened. There are 4 bolt holes; the overhanging end plate 5 has 8 bolt holes; the two unequal angle steels 4 are the top angle steel 41 and the bottom angle steel 42 respectively, and the top angle steel 41 and the bottom angle steel 42 are connected with the overhanging end plate 5 Two holes are opened on the side, and four holes are opened on the side connected to the steel beam 2; the two equilateral angle steels 3 include the left web angle steel 31 and the right web angle steel (covered by the steel beam in the figure), the left web angle steel 31 and the right web angle steel There are two bolt holes on both sides of the right web angle steel, and the concrete 7 is poured in the steel pipe.
顶部角钢41的水平面与钢梁2的上翼缘通过摩擦型高强度螺栓连接,顶部角钢41的竖直面与钢柱1通过穿过外伸端板5的摩擦型高强度螺栓连接;底部角钢42的水平面与钢梁2的下翼缘通过摩擦型高强度螺栓连接,底部角钢42的竖直面与钢柱1侧面通过穿过外伸端板5的摩擦型高强度螺栓连接;左腹板角钢31的第一竖直面和右腹板角钢的第一竖直面夹着钢梁2的腹板并且通过摩擦型高强度螺栓连接,左腹板角钢31的第二竖直面、外伸端板5与钢柱1侧面通过摩擦型高强度螺栓连接,右腹板角钢的第二竖直面、外伸端板5与钢柱1翼缘通过摩擦型高强度螺栓连接。The horizontal plane of the top angle steel 41 is connected to the upper flange of the steel beam 2 through friction-type high-strength bolts, and the vertical plane of the top angle steel 41 is connected to the steel column 1 through friction-type high-strength bolts passing through the overhanging end plate 5; the bottom angle steel The horizontal plane of 42 is connected with the lower flange of the steel beam 2 by friction-type high-strength bolts, and the vertical plane of the bottom angle steel 42 is connected with the side of steel column 1 by friction-type high-strength bolts passing through the overhanging end plate 5; the left web The first vertical surface of the angle steel 31 and the first vertical surface of the right web angle steel sandwich the web of the steel beam 2 and are connected by friction-type high-strength bolts. The end plate 5 is connected to the side of the steel column 1 through friction-type high-strength bolts, and the second vertical surface of the right web angle steel, the overhanging end plate 5 is connected to the flange of the steel column 1 through friction-type high-strength bolts.
本实施例方案中,螺栓孔个数由力学计算决定。In the scheme of this embodiment, the number of bolt holes is determined by mechanical calculation.
作为上述实施例方案的部分优选方案,高强度螺栓采用摩擦型高强度螺栓。As a partial preferred solution of the above embodiments, the high-strength bolts are friction-type high-strength bolts.
作为上述实施例方案的部分优选方案,高强度螺栓采用单边螺栓。As a partial preferred solution of the above embodiments, the high-strength bolts are single-sided bolts.
本连接节点的加工和施工如下:The processing and construction of this connection node are as follows:
(1)钢柱在两侧面通透开洞;(1) The steel column has transparent openings on both sides;
钢梁上下翼缘均需开洞;Both the upper and lower flanges of steel beams need to be opened;
齐平端板开洞;Flush end plate opening;
4个角钢的两个面均开洞。Both faces of the 4 angle steels are perforated.
(2)首先顶部角钢和底部角钢与钢梁上下翼缘通过高强度螺栓连接;(2) First, the top angle steel and the bottom angle steel are connected with the upper and lower flanges of the steel beam through high-strength bolts;
(3)左腹板角钢和右腹板角钢与钢梁的腹板通过高强度螺栓连接;(3) The left web angle steel and the right web angle steel are connected to the web of the steel beam through high-strength bolts;
(4)左腹板角钢、右腹板角钢、顶部角钢、底部角钢和齐平端板连接钢柱。(4) Left web angle steel, right web angle steel, top angle steel, bottom angle steel and flush end plate connection steel column.
本连接节点在连接安装过程中,注意保证孔洞对齐,安装高强度螺栓时还应注意初拧与终拧操作步骤。During the connection and installation process of this connection node, pay attention to ensure that the holes are aligned, and pay attention to the initial and final screwing steps when installing high-strength bolts.
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Application publication date: 20151118 |