CN210086482U - Laminated column concrete beam node structure - Google Patents

Laminated column concrete beam node structure Download PDF

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CN210086482U
CN210086482U CN201920257765.1U CN201920257765U CN210086482U CN 210086482 U CN210086482 U CN 210086482U CN 201920257765 U CN201920257765 U CN 201920257765U CN 210086482 U CN210086482 U CN 210086482U
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concrete
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周靖
方小丹
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South China University of Technology SCUT
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Abstract

涉及一种叠合柱混凝土梁节点构造,包括:钢管混凝土叠合柱或型钢混凝土柱、混凝土梁和环形钢筋或钢带;环形钢筋或钢带与钢管混凝土叠合柱或型钢混凝土柱同轴向设置在钢管混凝土叠合柱或型钢混凝土柱内,混凝土梁的受力纵筋卡扣于环形钢筋或钢带并锚固在钢管混凝土叠合柱或型钢混凝土柱内。环形钢筋或钢带作为受力纵筋的锚固筋,受力纵筋通过环形钢筋或钢带绕过钢管或型钢传递主要拉力,传力路径明确、受力可靠,梁柱节点具有良好的抗震性能,避免受力纵筋需穿过钢管或型钢的复杂构造,避免因钢管内有钢筋或型钢穿过而导致混凝土浇捣困难。施工方便,提高节点设计灵活性。

Figure 201920257765

It relates to a superimposed column concrete beam joint structure, comprising: a concrete-filled steel tube superimposed column or a sectioned steel concrete column, a concrete beam and an annular steel bar or steel strip; It is arranged in a CFST superimposed column or a sectioned steel concrete column, and the longitudinal reinforcement of the concrete beam is clamped to an annular steel bar or steel belt and anchored in the CFST superimposed column or sectioned steel concrete column. The ring-shaped steel bar or steel strip is used as the anchoring bar of the stressed longitudinal bar. The stressed longitudinal bar passes the main tension force through the ring-shaped steel bar or steel strip and bypasses the steel pipe or section steel. The force transmission path is clear and the force is reliable. The beam-column joint has good seismic performance. , to avoid the complex structure that the stressed longitudinal bars need to pass through the steel pipe or section steel, and to avoid the difficulty of pouring concrete due to the steel bar or section steel passing through the steel pipe. The construction is convenient and the flexibility of node design is improved.

Figure 201920257765

Description

一种叠合柱混凝土梁节点构造A composite column concrete beam joint structure

技术领域technical field

本实用新型涉及建筑结构领域,尤其涉及一种叠合柱混凝土梁节点构造。The utility model relates to the field of building structures, in particular to a superimposed column concrete beam joint structure.

背景技术Background technique

钢管混凝土叠合柱和型钢混凝土柱已广泛应用于高层建筑及大型工业厂房,取得了显著的经济效益。但钢管混凝土叠合柱或型钢混凝土柱与混凝土梁已有的连接节点构造复杂、施工不便,限制了该结构的推广使用。受制于混凝土梁的受力纵筋伸入钢管混凝土叠合柱或型钢混凝土柱内的直锚段抗震锚固长度的构造要求,一般有三种方式进行混凝土梁的受力纵筋锚固:其一是将混凝土梁的受力纵筋穿过内嵌的钢管约束混凝土或型钢,贯穿钢筋多、管内混凝土浇筑困难、施工周期长,且钢管或型钢开洞影响叠合柱的承载力;其二是减小钢管约束混凝土或型钢的截面尺寸以保证外围混凝土截面的宽度,则钢管直径太小不利于混凝土的浇筑,而且制约了混凝土叠合柱的承载力,叠合柱截面设计的灵活性有较大的局限;其三是在钢管或型钢外侧壁焊接加强钢板或牛腿,混凝土梁的受力纵筋穿过加强钢板或锚固在钢板上,构造复杂、现场焊接工作量大、施工效率低、建造成本高。提出一种钢管混凝土叠合柱或型钢混凝土柱—混凝土梁节点内混凝土梁端受力纵筋传力合理、受力明确、锚固构造简单和施工便捷的构造,有很大的工程应用价值。Concrete-filled steel tubular composite columns and steel-reinforced concrete columns have been widely used in high-rise buildings and large industrial plants, and have achieved significant economic benefits. However, the existing connection joints of the CFST composite column or the section steel concrete column and the concrete beam are complicated in structure and inconvenient in construction, which limits the popularization and use of the structure. Subject to the structural requirements of the seismic anchorage length of the straight anchor section in which the stressed longitudinal reinforcement of the concrete beam extends into the CFST composite column or the section steel concrete column, there are generally three ways to anchor the stressed longitudinal reinforcement of the concrete beam: one is to The longitudinal reinforcement of the concrete beam passes through the embedded steel tube to restrain the concrete or section steel. There are many penetrating steel bars, the concrete pouring in the tube is difficult, the construction period is long, and the opening of the steel tube or section steel affects the bearing capacity of the laminated column; the second is to reduce the The steel tube constrains the section size of concrete or section steel to ensure the width of the outer concrete section. If the diameter of the steel tube is too small, it is not conducive to the pouring of concrete, and also restricts the bearing capacity of the concrete composite column. The flexibility of the design of the composite column section is greater. The third is to weld the reinforced steel plate or corbel on the outer side wall of the steel pipe or section steel, and the longitudinal reinforcement of the concrete beam passes through the reinforced steel plate or is anchored on the steel plate. high. This paper proposes a concrete-filled steel tubular composite column or a steel-reinforced concrete column-concrete beam joint with reasonable longitudinal reinforcement at the end of the concrete beam, clear force, simple anchoring structure and convenient construction, which has great engineering application value.

实用新型内容Utility model content

针对现有技术中存在的技术问题,本实用新型的目的是:提供一种叠合柱Aiming at the technical problems existing in the prior art, the purpose of the utility model is to provide a superimposed column

混凝土梁节点构造。该梁柱节点构造通过设置环形钢筋或钢带作为受力纵筋的锚固筋,容易实现强节点,保证连接节点的抗震性能,显著提高梁柱节点的设计灵活性。Concrete beam joint construction. In this beam-column joint structure, by setting annular reinforcement bars or steel strips as anchoring bars for longitudinal reinforcement under stress, it is easy to realize strong joints, ensure the seismic performance of connecting joints, and significantly improve the design flexibility of beam-column joints.

为了达到上述目的,本实用新型采用如下技术方案:In order to achieve the above purpose, the utility model adopts the following technical solutions:

一种叠合柱混凝土梁节点构造,包括:钢管混凝土叠合柱或型钢混凝土柱、混凝土梁和环形钢筋或钢带;环形钢筋或钢带与钢管混凝土叠合柱或型钢混凝土柱同轴向设置在钢管混凝土叠合柱或型钢混凝土柱内,混凝土梁的受力纵筋卡扣于环形钢筋或钢带并锚固在钢管混凝土叠合柱或型钢混凝土柱内,受力纵筋通过环形钢筋或钢带传递主要拉力。采用这种梁、柱节点构造后,设置在钢管混凝土叠合柱或型钢混凝土柱内的环形钢筋或钢带卡扣锚固混凝土梁的受力纵筋,可保证连接节点的抗震性能,充分发挥内嵌钢管约束混凝土或型钢的承载力。受力纵筋伸入柱内的直锚段,无需为满足抗震锚固长度的构造要求而穿过内嵌的钢管或型钢,无需在钢管或型钢外侧壁焊接增设混凝土梁的受力纵筋的连接加强钢板。A superimposed column concrete beam joint structure, comprising: a concrete-filled steel tube superimposed column or a sectioned steel concrete column, a concrete beam and an annular steel bar or steel strip; In the CFST composite column or the sectioned steel concrete column, the longitudinal reinforcement of the concrete beam is clamped to the annular steel bar or steel belt and anchored in the CFST composite column or the sectioned steel concrete column, and the stressed longitudinal reinforcement passes through the annular reinforcement or steel strip. The belt transmits the main tension. After adopting this beam-column joint structure, the longitudinal reinforcement of the concrete beams anchored by the ring-shaped steel bars or steel belt buckles arranged in the CFST composite column or the section steel concrete column can ensure the seismic performance of the connection nodes and give full play to the internal structure. The bearing capacity of the concrete or section steel is restrained by the embedded steel tube. The straight anchor section of the longitudinal reinforcement extending into the column does not need to pass through the embedded steel pipe or section steel in order to meet the structural requirements of the seismic anchorage length, and there is no need to weld the connection of the longitudinal reinforcement of the concrete beam on the outer side wall of the steel pipe or section steel. Reinforced steel plate.

优选地,钢管混凝土叠合柱的柱芯为钢管混凝土,型钢混凝土柱的柱芯为型钢;环形钢筋或钢带位于型钢或钢管的外围。Preferably, the column core of the CFST superimposed column is steel tube, and the column core of the profiled steel concrete column is profiled steel; the annular reinforcement or steel strip is located on the periphery of the profiled steel or steel pipe.

优选地,混凝土梁的受力纵筋卡扣于环形钢筋或钢带的一端焊接有一段用于卡扣在环形钢筋或钢带上的短钢筋;短钢筋的双面贴角焊焊缝长度由受力纵筋的计算拉力确定;当短钢筋的直径与受力纵筋的直径相同时,双面贴角焊焊缝长不小于受力纵筋直径的5倍;环形钢筋水平向并筋数量不多于3根,环形并筋之间净距不应小于30mm,且大于等于1.5倍环形钢筋直径。采用这种构造后,能有效实现混凝土梁端受力纵筋的可靠锚固,抑制受力纵筋在钢管混凝土叠合柱或型钢混凝土柱内的粘结滑移,且方便混凝土的浇筑。利用双面贴角焊短钢筋将受力纵筋卡扣锚固,施工操作非常简便。Preferably, the stressed longitudinal reinforcement of the concrete beam is fastened to one end of the annular reinforcement bar or steel strip and welded with a short reinforcement bar for clipping on the annular reinforcement reinforcement or the steel strip; the length of the double-sided fillet weld of the short reinforcement bar is determined by The calculated tensile force of the stressed longitudinal reinforcement is determined; when the diameter of the short steel bar is the same as that of the stressed longitudinal reinforcement, the length of the double-sided fillet weld shall not be less than 5 times the diameter of the stressed longitudinal reinforcement; the number of horizontal reinforcement of the ring reinforcement No more than 3, the net distance between the annular parallel bars should not be less than 30mm, and greater than or equal to 1.5 times the diameter of the annular bars. After adopting this structure, the reliable anchoring of the stressed longitudinal reinforcement at the end of the concrete beam can be effectively realized, the bonding and sliding of the stressed longitudinal reinforcement in the CFST composite column or the profiled steel concrete column can be suppressed, and the concrete pouring is convenient. Use double-sided fillet welded short steel bars to anchor the stressed longitudinal bars, and the construction operation is very simple.

优选地,混凝土梁的受力纵筋与环形钢筋或钢带点焊固定,形成一种点焊卡扣锚固构造。Preferably, the stressed longitudinal reinforcement of the concrete beam is spot welded and fixed with the annular reinforcement bar or the steel strip to form a spot welding clip anchoring structure.

优选地,混凝土梁的受力纵筋端部绕过环形钢筋或钢带垂直弯折在钢管混凝土叠合柱或型钢混凝土柱内,梁面的受力纵筋和梁底的受力纵筋分别交错垂直弯折至混凝土梁的梁底和梁顶,形成一种“L”型弯折卡扣锚固构造。Preferably, the end of the stressed longitudinal reinforcement of the concrete beam is vertically bent into the CFST composite column or the sectioned steel concrete column around the annular steel bar or the steel strip, and the stressed longitudinal reinforcement of the beam surface and the stressed longitudinal reinforcement of the beam bottom are respectively It is staggered and vertically bent to the bottom and top of the concrete beam to form an "L"-shaped bending clip anchoring structure.

优选地,混凝土梁受力纵筋的端部绕过环形钢筋或钢带垂直弯折在钢管混凝土叠合柱或型钢混凝土柱内,梁面的受力纵筋和梁底的受力纵筋分别垂直弯折至两者端部重合,或梁面的受力纵筋和梁底的受力纵筋为通长钢筋,形成一种“[”型弯折卡扣锚固构造。Preferably, the end of the longitudinal reinforcement of the concrete beam is vertically bent around the circular steel bar or the steel strip in the CFST composite column or the sectioned steel concrete column, and the longitudinal reinforcement of the beam surface and the longitudinal reinforcement of the beam bottom are respectively bent vertically. Fold until the ends of the two overlap, or the longitudinal reinforcement of the beam surface and the longitudinal reinforcement of the beam bottom are full-length reinforcement, forming a "[" type bending buckle anchoring structure.

优选地,环形钢筋和钢带的截面面积通过混凝土梁的受力纵筋的拉力计算确定。采用这种构造后,按要求确定环形钢筋或钢带截面面积,混凝土梁的受力纵筋可在钢管混凝土叠合柱或型钢混凝土柱内可靠锚固,易于实现强节点的抗震构造要求。Preferably, the cross-sectional area of the annular reinforcement and the steel strip is determined by calculating the tensile force of the longitudinal reinforcement of the concrete beam. After adopting this structure, the cross-sectional area of the annular reinforcement or steel strip is determined according to the requirements, and the longitudinal reinforcement of the concrete beam can be reliably anchored in the CFST composite column or the sectioned steel concrete column, which is easy to realize the seismic structure requirements of the strong joint.

优选地,钢管混凝土叠合柱可为圆形、方形或矩形,内嵌钢管可为圆形、方形或矩形;型钢混凝土柱可为┼形型钢、工形型钢、钢管与型钢多种组合的形状。采用这种构造后,钢管混凝土叠合柱或型钢混凝土柱的设计灵活,通用性高。Preferably, the CFST superimposed column can be circular, square or rectangular, and the embedded steel pipe can be circular, square or rectangular; the reinforced concrete column can be a combination of ┼-shaped steel, I-shaped steel, steel pipe and shaped steel. . After adopting this structure, the design of the CFST composite column or the profiled steel concrete column is flexible and has high versatility.

一种叠合柱混凝土梁节点构造的施工方法,包括以下步骤:S1:根据混凝土梁的受力纵筋确定环形钢筋或钢带的截面面积以及采用的环形钢筋的直径、数量、并筋间距;确定环形钢筋或钢带的套环直径;S2:确定受力纵筋伸入钢管混凝土叠合柱或型钢混凝土柱内的长度,能满足受力纵筋的点焊卡扣锚固构造或弯折卡扣锚固构造的要求;采用点焊锚固构造,在受力纵筋端部双面贴角焊短钢筋;S3:环形钢筋或钢带套住钢管或型钢安装,受力纵筋伸入环形钢筋或钢带的内侧;采用L形弯折卡扣锚固构造,梁面的受力纵筋绕过环形钢筋或钢带垂直向梁底弯折,梁底的受力纵筋绕过环形钢筋或钢带垂直向梁顶弯折;采用[形弯折卡扣锚固构造,梁面的受力纵筋和梁底的受力纵筋分别垂直弯折至两者端部重合,或梁面的受力纵筋和梁底的受力纵筋采用通长钢筋;环形钢筋或钢带与受力纵筋点焊并固定成型;S4:现场安装钢管混凝土叠合柱或型钢混凝土柱模板、混凝土梁的模板;S5:浇筑混凝土,形成整体刚性的钢管混凝土叠合柱或型钢混凝土柱—混凝土梁连接节点。A construction method for a superimposed column concrete beam joint structure, comprising the following steps: S1: determining the cross-sectional area of a ring-shaped steel bar or a steel strip and the diameter, quantity, and paralleling spacing of the ring-shaped steel bars used according to the stressed longitudinal reinforcement of the concrete beam; Determine the diameter of the ring of the annular reinforcement or steel strip; S2: Determine the length of the longitudinal reinforcement extending into the CFST composite column or the sectioned steel concrete column, which can meet the spot welding clip anchoring structure or bending clip of the stressed longitudinal reinforcement. The requirements for the buckle anchor structure; the spot welding anchor structure is adopted, and the short fillet welded steel bars are attached to the ends of the stressed longitudinal bars on both sides; S3: The annular steel bars or steel strips are installed over the steel pipes or profiles, and the stressed longitudinal bars extend into the annular steel bars or The inner side of the steel belt; the L-shaped bending buckle anchoring structure is adopted, the longitudinal reinforcement of the beam surface is bent vertically to the bottom of the beam by bypassing the circular reinforcement or steel strip, and the longitudinal reinforcement of the beam bottom bypasses the circular reinforcement or steel strip Bend vertically to the top of the beam; adopt the [-shaped bending buckle anchoring structure, the longitudinal reinforcement of the beam surface and the longitudinal reinforcement of the beam bottom are respectively bent vertically until the ends of the two overlap, or the longitudinal reinforcement of the beam surface is stressed. The longitudinal reinforcement of the reinforcement and the bottom of the beam adopts the full-length reinforcement; the annular reinforcement or steel strip is spot welded with the longitudinal reinforcement and fixed to form; S4: On-site installation of the concrete-filled steel tubular composite column or the formwork of the steel-concrete column and the formwork of the concrete beam; S5: Concrete is poured to form an overall rigid concrete-filled steel tubular composite column or a steel-concrete column-concrete beam connection node.

优选地,步骤S3中将环形钢筋或钢带套装在钢管或型钢上时,需要确定环形钢筋或钢带的套环内侧与钢管或型钢外侧壁间距,以满足受力纵筋的点焊卡扣锚固构造或弯折卡扣锚固构造要求;步骤S4中,需要确保环形钢筋或钢带的套环外侧有足够的混凝土保护层厚度。Preferably, when the annular reinforcing bar or steel strip is sleeved on the steel pipe or section steel in step S3, it is necessary to determine the distance between the inner side of the ring of the annular reinforcing bar or steel strip and the outer side wall of the steel tube or section steel, so as to satisfy the spot welding buckle of the stressed longitudinal reinforcement. Requirements for the anchoring structure or the anchoring structure of the bending clip; in step S4, it is necessary to ensure that there is sufficient concrete protective layer thickness on the outer side of the ring of the annular steel bar or the steel strip.

本实用新型的原理是:在钢管混凝土叠合柱或型钢混凝土柱内增设环形钢筋或钢带,套装固定在钢管或型钢外围,与柱同轴心或偏心设置。混凝土梁的受力纵筋通过环形钢筋或钢带卡扣锚固在钢管混凝土叠合柱或型钢混凝土柱外部混凝土内,实现受力纵筋的可靠抗震锚固,解决混凝土梁伸入钢管混凝土叠合柱或型钢混凝土柱的受力纵筋的直锚段不满足抗震锚固构造要求的技术难题;避免混凝土梁的受力纵筋穿过内嵌的钢管约束混凝土或型钢;避免在钢管或型钢焊接设置连接混凝土梁的受力纵筋的钢牛腿或环形钢板;避免为保证钢筋锚固长度而增加钢管或型钢外围混凝土的厚度。The principle of the utility model is as follows: a ring-shaped steel bar or a steel strip is added in the steel-filled concrete superimposed column or the profiled-steel-concrete column; The stressed longitudinal reinforcement of the concrete beam is anchored in the concrete outside the CFST composite column or the section steel concrete column through the ring reinforcement or steel belt buckle, so as to realize the reliable seismic anchoring of the stressed longitudinal reinforcement, and solve the problem that the concrete beam extends into the CFST composite column. The technical problem that the straight anchor section of the longitudinal reinforcement of the steel or section steel column does not meet the requirements of the seismic anchoring structure; avoid the longitudinal reinforcement of the concrete beam passing through the embedded steel tube to restrain the concrete or section steel; avoid setting the connection in the steel tube or section steel welding The steel corbels or annular steel plates of the longitudinal reinforcement of the concrete beam; avoid increasing the thickness of the outer concrete of the steel pipe or section steel to ensure the anchorage length of the reinforcement.

总的说来,本实用新型具有如下优点:In general, the utility model has the following advantages:

1.采用环形钢筋或钢带卡扣锚固混凝土梁的受力纵筋,节点构造简单、受力明确,成功解决了钢管混凝土叠合柱或型钢混凝土柱内混凝土梁的受力纵筋抗震直锚段要求的构造约束。环形钢筋或钢带内的钢管或型钢无形状要求,可灵活设计钢管混凝土叠合柱或型钢混凝土柱内的钢管或型钢的截面尺寸,满足钢管混凝土叠合柱或型钢混凝土柱的不同承载力设计需求、不同结构空间设计需求,通用性很高,可提高梁柱节点的空间适应性。1. The stress longitudinal bars of concrete beams are anchored by ring steel bars or steel belt buckles. The joint structure is simple and the stress is clear. Construction constraints required by the segment. The steel pipe or section steel in the annular reinforcement or steel strip has no shape requirements, and the cross-sectional size of the steel pipe or section steel in the CFST composite column or the section steel column can be flexibly designed to meet the design of different bearing capacities of the CFST composite column or the section steel concrete column. It has high versatility and can improve the spatial adaptability of beam-column joints.

2.节点内混凝土梁的受力纵筋无需穿过内嵌的钢管约束混凝土或型钢,钢管或型钢截面不削弱,保障了钢管混凝土叠合柱或型钢混凝土柱在节点区域的承载能力;混凝土梁能合理可靠地传递梁端弯矩与剪力、承载力安全储备高;节点整体抗震性能好,能充分保障“强节点弱构件”抗震设计原则。2. The longitudinal reinforcement of the concrete beam in the node does not need to pass through the embedded steel tube to restrain the concrete or section steel, and the section of the steel tube or section steel is not weakened, which ensures the bearing capacity of the CFST composite column or the section steel concrete column in the node area; the concrete beam The beam end bending moment and shear force can be transmitted reasonably and reliably, and the bearing capacity has a high safety reserve; the overall seismic performance of the joint is good, and the seismic design principle of "strong joint and weak member" can be fully guaranteed.

3.节点内混凝土梁的受力纵筋无需穿过内嵌的钢管约束混凝土或型钢,钢管或型钢外侧壁无需焊接加劲板或其他连接件,可大幅度简化节点施工、显著减少现场焊接工作量,降低施工难度、提高施工效率,还节约梁柱节点的建造成本和施工成本。3. The longitudinal reinforcement of the concrete beam in the node does not need to pass through the embedded steel tube to restrain the concrete or section steel, and the outer side wall of the steel tube or section steel does not need to weld stiffening plates or other connectors, which can greatly simplify the joint construction and significantly reduce the on-site welding workload. , reduce construction difficulty, improve construction efficiency, and save the construction cost and construction cost of beam-column joints.

4.本梁柱节点构造的应用广泛,钢筋或钢带卡扣锚固混凝土梁的受力纵筋的构造可扩展应用于钢管混凝土柱—混凝土环梁节点、钢管混凝土剪力墙—混凝土连梁节点,型钢混凝土剪力墙—混凝土连梁节点等。4. The beam-column joint structure has a wide range of applications. The structure of the longitudinal reinforcement of the concrete beam anchored by the steel bar or the steel belt can be extended to the concrete-filled steel tube column-concrete ring beam node, the concrete-filled steel tube shear wall-concrete coupling beam node , section steel concrete shear wall - concrete coupling beam joints, etc.

附图说明Description of drawings

图1是含圆钢管混凝土的方形叠合柱的俯视图。FIG. 1 is a top view of a square stacked column containing a circular steel tube concrete.

图2是含┼形型钢的混凝土方形柱的俯视图。Figure 2 is a top view of a concrete square column containing a ┼-shaped steel.

图3是图1和图2中环形钢筋或钢带点焊卡扣锚固构造的剖面结构示意图。FIG. 3 is a schematic cross-sectional structural diagram of the spot welding clip anchoring structure of the annular steel bar or steel strip in FIG. 1 and FIG. 2 .

图4是图3中A处的构造详图(环形钢筋或钢带)。Fig. 4 is a detailed view of the construction at A in Fig. 3 (an annular bar or strip).

图5是图1和图2中环形钢筋或钢带卡扣L形弯折卡扣锚固构造的剖面结构示意图。FIG. 5 is a schematic cross-sectional structural diagram of the L-shaped bending clip anchoring structure of the annular steel bar or steel belt clip in FIG. 1 and FIG. 2 .

图6是图5中B处的构造详图(环形钢筋或钢带)。Fig. 6 is a detailed view of the construction at B in Fig. 5 (an annular bar or strip).

图7是图1和图2中环形钢筋或钢带卡扣[形弯折卡扣锚固构造的剖面结构示意图。FIG. 7 is a schematic cross-sectional structural diagram of the anchoring structure of the annular steel bar or steel belt buckle [shaped bending buckle in FIG. 1 and FIG. 2 .

图8是图7中C处的构造详图(环形钢筋或钢带)。Fig. 8 is a detailed view of the construction at C in Fig. 7 (an annular bar or strip).

图9是含方钢管混凝土的方形叠合柱的俯视图。Fig. 9 is a plan view of a square stacked column containing square steel tubular concrete.

图10是含圆钢管混凝土的圆形叠合柱的俯视图。Fig. 10 is a plan view of a circular stacked column containing a circular steel tube concrete.

图11是含方钢管混凝土的圆形叠合柱的俯视图。FIG. 11 is a plan view of a circular stacked column containing square steel tube concrete.

图12是含工形型钢的混凝土方形柱的俯视图。Figure 12 is a top view of a concrete square column with I-shaped steel.

图13是含┼形型钢的混凝土圆形柱的俯视图。Figure 13 is a top view of a concrete circular column with a ┼ shaped steel.

图中的标号和对应的零部件名称为:1为方形叠合柱,2为圆钢管,3为环形钢筋,4为环形钢带,5为混凝土梁,6为受力纵筋,7为梁面的受力纵筋,8 为梁底的受力纵筋,11为圆形叠合柱,21为方钢管,22为┼形型钢,23为工形型钢。图中,d为受力纵筋直径,h为垂直段长度(h≥20d)。The labels and corresponding parts names in the figure are: 1 is a square superimposed column, 2 is a round steel pipe, 3 is a ring steel bar, 4 is a ring steel strip, 5 is a concrete beam, 6 is a stressed longitudinal bar, and 7 is a beam 8 is the longitudinal reinforcement of the beam bottom, 11 is the circular superimposed column, 21 is the square steel pipe, 22 is the ┼-shaped steel, and 23 is the I-shaped steel. In the figure, d is the diameter of the longitudinal reinforcement under force, and h is the length of the vertical section (h≥20d).

具体实施方式Detailed ways

下面结合附图来对本实用新型做进一步详细的说明。The present utility model will be described in further detail below in conjunction with the accompanying drawings.

实施例一Example 1

一种钢管混凝土叠合柱—混凝土梁节点构造,如图1、图3、图4所示,包括:钢管混凝土叠合柱、混凝土梁和环形钢筋或钢带。环形钢筋为中心对称环状,套装固定在圆钢管外围,与钢管混凝土叠合柱同轴心设置,混凝土梁的受力纵筋卡扣于环形钢筋或钢带并锚固在钢管混凝土叠合柱内,受力纵筋通过环形钢筋或钢带传递主要拉力。受力纵筋端部焊接一段短钢筋,短钢筋的直径等于受力纵筋的直径(d=20mm),双面贴角焊焊缝长等于100mm,短钢筋、环形钢筋点焊固定在受力纵筋上,形成点焊卡扣锚固构造。采用2根环形钢筋,环形钢筋之间净距等于30mm。A CFST composite column-concrete beam joint structure, as shown in Figure 1, Figure 3, Figure 4, includes: CFST composite columns, concrete beams, and annular steel bars or steel strips. The ring-shaped steel bar is centrally symmetrical and annular, and the sleeve is fixed on the periphery of the round steel pipe, and is arranged coaxially with the CFST superimposed column. , the longitudinal reinforcement transmits the main tensile force through the annular reinforcement or steel belt. A section of short steel bar is welded at the end of the stressed longitudinal bar. The diameter of the short steel bar is equal to the diameter of the stressed longitudinal bar (d=20mm). The length of the double-sided fillet weld is equal to 100mm. On the longitudinal rib, a spot welding buckle anchoring structure is formed. Two ring steel bars are used, and the net distance between the ring bars is equal to 30mm.

该梁节点构造的施工方法,包括以下步骤:The construction method of the beam joint structure includes the following steps:

S1:根据混凝土梁的受力纵筋确定环形钢筋或钢带的截面面积以及采用的环形钢筋的直径、数量、并筋间距;确定环形钢筋或钢带的套环直径,环形钢筋内侧与钢管外侧壁有足够间距,满足混凝土梁的受力纵筋的点焊卡扣锚固构造要求;环形钢筋的外侧有足够的混凝土保护层厚度。S1: According to the longitudinal reinforcement of the concrete beam, determine the cross-sectional area of the annular reinforcement or steel strip, and the diameter, quantity, and spacing of the annular reinforcement used; The wall has sufficient spacing to meet the requirements of spot welding clip anchoring structure of the stressed longitudinal reinforcement of the concrete beam; the outer side of the annular reinforcement has sufficient concrete protective layer thickness.

S2:确定受力纵筋伸入钢管混凝土叠合柱内的长度,能满足受力纵筋的点焊卡扣锚固构造要求;采用点焊锚固构造,在受力纵筋端部双面贴角焊短钢筋。S2: Determine the length of the stressed longitudinal reinforcement extending into the CFST composite column, which can meet the requirements of the spot welding clip anchoring structure of the stressed longitudinal reinforcement; the spot welding anchoring structure is adopted, and the ends of the stressed longitudinal reinforcement are angled on both sides Weld short bars.

S3:环形钢筋或钢带套住钢管或型钢安装,受力纵筋伸入环形钢筋或钢带的内侧;环形钢筋与混凝土梁的受力纵筋点焊并固定成型。S3: The annular steel bar or steel belt is installed over the steel pipe or section steel, and the stressed longitudinal reinforcement extends into the inner side of the annular steel reinforcement or steel belt; the annular steel reinforcement and the stressed longitudinal reinforcement of the concrete beam are spot welded and fixed into shape.

S4:现场安装钢管混凝土叠合柱的模板、混凝土梁的模板。S4: On-site installation of the formwork of the CFST composite column and the formwork of the concrete beam.

S5:浇筑混凝土,形成整体刚性的钢管混凝土叠合柱—混凝土梁连接节点。S5: Concrete is poured to form an overall rigid concrete-filled steel tubular composite column-concrete beam connection node.

实施例二Embodiment 2

如图1、图5、图6所示,混凝土梁的受力纵筋端部焊接一段短钢筋,短钢筋的直径等于受力纵筋的直径(d=20mm),双面贴角焊焊缝长等于100mm,受力纵筋绕过环形钢带,垂直弯折在钢管混凝土叠合柱内,形成L形弯折卡扣锚固构造。梁面的受力纵筋和梁底的受力纵筋分别垂直弯折至梁底和梁顶,垂直段长度等于400mm。环形钢筋或钢带的截面积=700mm2As shown in Figure 1, Figure 5 and Figure 6, a short steel bar is welded at the end of the longitudinal reinforcement of the concrete beam. The diameter of the short reinforcement is equal to the diameter of the longitudinal reinforcement (d=20mm), and the double-sided fillet weld The length is equal to 100mm, and the longitudinal reinforcement of the force bypasses the annular steel belt, and is vertically bent in the concrete-filled steel tube superimposed column to form an L-shaped bending buckle anchoring structure. The longitudinal reinforcement of the beam surface and the longitudinal reinforcement of the beam bottom are bent vertically to the beam bottom and the beam top respectively, and the length of the vertical section is equal to 400mm. Cross-sectional area of annular reinforcement or strip = 700 mm 2 .

该梁节点构造的施工方法,包括以下步骤:The construction method of the beam joint structure includes the following steps:

S1:根据混凝土梁的受力纵筋确定环形钢筋或钢带的截面面积以及采用的环形钢筋的直径、数量、并筋间距;确定环形钢筋或钢带的套环直径,环形钢筋内侧与钢管外侧壁有足够间距,满足混凝土梁的受力纵筋的弯折卡扣锚固构造要求;环形钢筋的外侧有足够的混凝土保护层厚度。S1: According to the longitudinal reinforcement of the concrete beam, determine the cross-sectional area of the annular reinforcement or steel strip, and the diameter, quantity, and spacing of the annular reinforcement used; The walls have sufficient spacing to meet the requirements of the bending clip anchorage structure of the longitudinal reinforcement of the concrete beam; the outer side of the annular reinforcement has sufficient concrete protective layer thickness.

S2:确定受力纵筋伸入钢管混凝土叠合柱内的长度,能满足受力纵筋的弯折卡扣锚固构造要求;采用L形弯折卡扣锚固构造,梁面的受力纵筋绕过环形钢筋或钢带垂直向梁底弯折,梁底的受力纵筋绕过环形钢筋或钢带垂直向梁顶弯折。S2: Determine the length of the stressed longitudinal reinforcement extending into the CFST superimposed column, which can meet the requirements of the bending clip anchorage structure of the stressed longitudinal reinforcement; adopt the L-shaped bending clip anchorage structure, and the stressed longitudinal reinforcement on the beam surface Bend vertically to the bottom of the beam around the annular reinforcement or steel strip, and the longitudinal reinforcement at the bottom of the beam bypasses the annular reinforcement or steel strip to bend vertically to the top of the beam.

S3:环形钢筋或钢带套住钢管或型钢安装,受力纵筋伸入环形钢筋或钢带的内侧;环形钢筋与混凝土梁的受力纵筋点焊并固定成型。S3: The annular steel bar or steel belt is installed over the steel pipe or section steel, and the stressed longitudinal reinforcement extends into the inner side of the annular steel reinforcement or steel belt; the annular steel reinforcement and the stressed longitudinal reinforcement of the concrete beam are spot welded and fixed into shape.

S4:现场安装钢管混凝土叠合柱模板、混凝土梁的模板。S4: On-site installation of concrete-filled steel tubular composite column formwork and concrete beam formwork.

S5:浇筑混凝土,形成整体刚性的钢管混凝土叠合柱—混凝土梁连接节点。S5: Concrete is poured to form an overall rigid concrete-filled steel tubular composite column-concrete beam connection node.

本实施例中未提及部分同实施例一,此处不再赘述。The parts not mentioned in this embodiment are the same as those in the first embodiment, and are not repeated here.

实施例三Embodiment 3

如图1、图7、图8所示,混凝土梁的受力纵筋在钢管混凝土叠合柱内为通长钢筋,绕过环形钢带垂直弯折伸入钢管混凝土叠合柱内,形成[形弯折卡扣锚固构造。As shown in Figure 1, Figure 7, and Figure 8, the longitudinal reinforcement of the concrete beam is a full-length steel bar in the CFST composite column, which is vertically bent and extended into the CFST composite column around the annular steel strip, forming [ Shaped bending buckle anchoring structure.

该梁节点构造的施工方法,包括以下步骤:The construction method of the beam joint structure includes the following steps:

S1:根据混凝土梁的受力纵筋确定环形钢筋或钢带的截面面积以及采用的环形钢筋的直径、数量、并筋间距;确定环形钢筋或钢带的套环直径,环形钢筋内侧与钢管外侧壁有足够间距,满足混凝土梁的受力纵筋的弯折卡扣锚固构造要求;环形钢筋的外侧有足够的混凝土保护层厚度。S1: According to the longitudinal reinforcement of the concrete beam, determine the cross-sectional area of the annular reinforcement or steel strip, and the diameter, quantity, and spacing of the annular reinforcement used; The walls have sufficient spacing to meet the requirements of the bending clip anchorage structure of the longitudinal reinforcement of the concrete beam; the outer side of the annular reinforcement has sufficient concrete protective layer thickness.

S2:确定受力纵筋伸入钢管混凝土叠合柱内的长度,能满足受力纵筋的弯折卡扣锚固构造要求;采用[形弯折卡扣锚固构造,梁面的受力纵筋和梁底的受力纵筋分别绕过环形钢筋或钢带垂直弯折。S2: Determine the length of the stressed longitudinal reinforcement extending into the CFST superimposed column, which can meet the requirements of the bending clip anchorage structure of the stressed longitudinal reinforcement; The longitudinal reinforcement and the longitudinal reinforcement at the bottom of the beam are respectively bent vertically around the annular reinforcement or steel strip.

S3:环形钢筋或钢带套住钢管或型钢安装,受力纵筋伸入环形钢筋或钢带的内侧;环形钢筋与混凝土梁的受力纵筋点焊并固定成型。S3: The annular steel bar or steel belt is installed over the steel pipe or section steel, and the stressed longitudinal reinforcement extends into the inner side of the annular steel reinforcement or steel belt; the annular steel reinforcement and the stressed longitudinal reinforcement of the concrete beam are spot welded and fixed into shape.

S4:现场安装钢管混凝土叠合柱模板、混凝土梁的模板。S4: On-site installation of concrete-filled steel tubular composite column formwork and concrete beam formwork.

S5:浇筑混凝土,形成整体刚性的钢管混凝土叠合柱—混凝土梁连接节点。S5: Concrete is poured to form an overall rigid concrete-filled steel tubular composite column-concrete beam connection node.

本实施例中未提及部分同实施例一,此处不再赘述。The parts not mentioned in this embodiment are the same as those in the first embodiment, and are not repeated here.

除了上述实施例提及的方式外,如图9-图13所示,钢管还可以为方钢管,叠合柱还可以为方形,型钢可以为工形型钢或┼形型钢。这些变换方式均在本实用新型的保护范围内。In addition to the methods mentioned in the above embodiments, as shown in FIGS. 9-13 , the steel pipe can also be a square steel pipe, the superimposed column can also be a square shape, and the profile steel can be I-shaped steel or ┼-shaped steel. These transformation modes are all within the protection scope of the present invention.

上述实施例为本实用新型较佳的实施方式,但本实用新型的实施方式并不受上述实施例的限制,其他的任何未背离本实用新型的精神实质与原理下所作的改变、修饰、替代、组合、简化,均应为等效的置换方式,都包含在本实用新型的保护范围之内。The above-mentioned embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited by the above-mentioned embodiments, and any other changes, modifications, and substitutions made without departing from the spirit and principle of the present utility model , combination and simplification, all should be equivalent replacement methods, which are all included in the protection scope of the present invention.

Claims (8)

1.一种叠合柱混凝土梁节点构造,其特征在于,包括:钢管混凝土叠合柱或型钢混凝土柱、混凝土梁和环形钢筋或钢带;环形钢筋或钢带与钢管混凝土叠合柱或型钢混凝土柱同轴向设置在钢管混凝土叠合柱或型钢混凝土柱内,混凝土梁的受力纵筋卡扣于环形钢筋或钢带并锚固在钢管混凝土叠合柱或型钢混凝土柱内,受力纵筋通过环形钢筋或钢带传递主要拉力。1. a superimposed column concrete beam joint structure, is characterized in that, comprises: steel pipe concrete superposed column or section steel concrete column, concrete beam and annular reinforcement or steel strip; annular reinforcement or steel strip and steel tubular superposition column or section steel The concrete column is arranged in the CFST composite column or the sectioned steel concrete column in the same axial direction, and the longitudinal reinforcement of the concrete beam is clamped to the annular steel bar or steel belt and anchored in the CFST composite column or the sectioned steel concrete column. The tendons transmit the main tensile force through annular bars or strips. 2.按照权利要求1所述的叠合柱混凝土梁节点构造,其特征在于:钢管混凝土叠合柱的柱芯为钢管混凝土,型钢混凝土柱的柱芯为型钢;环形钢筋或钢带位于型钢或钢管外围的混凝土内。2. according to the described superimposed column concrete beam joint structure of claim 1, it is characterized in that: the column core of the CFST superimposed column is steel tube, and the column core of the section steel concrete column is section steel; Inside the concrete surrounding the steel tube. 3.按照权利要求1所述的叠合柱混凝土梁节点构造,其特征在于:混凝土梁的受力纵筋卡扣于环形钢筋或钢带的一端焊接有一段用于卡扣在环形钢筋或钢带上的短钢筋;短钢筋的双面贴角焊焊缝长度由受力纵筋的计算拉力确定;当短钢筋的直径与受力纵筋的直径相同时,双面贴角焊焊缝长不小于受力纵筋直径的5倍;环形钢筋水平向并筋数量不多于3根,环形并筋之间净距不应小于30mm,且大于等于1.5倍环形钢筋直径。3. The superimposed column concrete beam joint structure according to claim 1 is characterized in that: the stressed longitudinal reinforcement of the concrete beam is fastened to one end of the annular reinforcement bar or the steel strip and welded with a section for clipping to the annular reinforcement bar or the steel strip. The short steel bar on the belt; the length of the double-sided fillet weld of the short steel bar is determined by the calculated tensile force of the longitudinal reinforcement; when the diameter of the short steel bar is the same as the diameter of the longitudinal reinforcement, the length of the double-sided fillet weld It is not less than 5 times the diameter of the longitudinal reinforcement under stress; the number of horizontal reinforcement of the annular reinforcement is not more than 3, and the net distance between the annular reinforcements should not be less than 30mm, and greater than or equal to 1.5 times the diameter of the annular reinforcement. 4.按照权利要求3所述的叠合柱混凝土梁节点构造,其特征在于:混凝土梁的受力纵筋与环形钢筋或钢带点焊固定,形成一种点焊卡扣锚固构造。4 . The superimposed column concrete beam joint structure according to claim 3 , wherein the stress-bearing longitudinal bars of the concrete beam are spot welded and fixed with the annular reinforcing bars or steel strips to form a spot welding clip anchoring structure. 5 . 5.按照权利要求3所述的叠合柱混凝土梁节点构造,其特征在于:混凝土梁的受力纵筋端部绕过环形钢筋或钢带垂直弯折在钢管混凝土叠合柱或型钢混凝土柱内,梁面的受力纵筋和梁底的受力纵筋分别交错垂直弯折至混凝土梁的梁底和梁顶,形成一种“L”型弯折卡扣锚固构造。5. The superimposed column concrete beam joint structure according to claim 3 is characterized in that: the end of the stressed longitudinal reinforcement of the concrete beam is vertically bent on the CFST superimposed column or the section steel concrete column by bypassing the annular reinforcement or the steel strip. Inside, the longitudinal reinforcement of the beam surface and the longitudinal reinforcement of the beam bottom are staggered and vertically bent to the beam bottom and beam top of the concrete beam respectively, forming an "L"-shaped bending buckle anchoring structure. 6.按照权利要求1所述的叠合柱混凝土梁节点构造,其特征在于:混凝土梁的受力纵筋的端部绕过环形钢筋或钢带垂直弯折在钢管混凝土叠合柱或型钢混凝土柱内,梁面的受力纵筋和梁底的受力纵筋分别垂直弯折至两者端部重合,或梁面的受力纵筋和梁底的受力纵筋为通长钢筋,形成一种“[”型弯折卡扣锚固构造。6. The superimposed column concrete beam joint structure according to claim 1 is characterized in that: the end of the stressed longitudinal reinforcement of the concrete beam is vertically bent on the CFST superimposed column or the profiled steel concrete by bypassing the annular reinforcement or the steel strip. In the column, the longitudinal reinforcement of the beam surface and the longitudinal reinforcement of the beam bottom are respectively bent vertically until the ends of the two overlap, or the longitudinal reinforcement of the beam surface and the longitudinal reinforcement of the beam bottom are full-length reinforcement, A "[" type bending buckle anchoring structure is formed. 7.按照权利要求1所述的叠合柱混凝土梁节点构造,其特征在于:环形钢筋和钢带的截面面积通过受力纵筋的拉力计算确定。7 . The superimposed column concrete beam joint structure according to claim 1 , wherein the cross-sectional area of the annular reinforcement bar and the steel strip is determined by calculating the tensile force of the stressed longitudinal reinforcement. 8 . 8.按照权利要求2所述的叠合柱混凝土梁节点构造,其特征在于:钢管混凝土叠合柱为圆形、方形或矩形,内嵌钢管为圆形、方形或矩形;型钢混凝土柱为┼形型钢、工形型钢、钢管与型钢多种组合的形状。8. The superimposed column concrete beam joint structure according to claim 2 is characterized in that: the CFST superposed column is a circle, a square or a rectangle, the embedded steel pipe is a circle, a square or a rectangle; the profiled steel concrete column is a Shaped steel, I-shaped steel, steel pipe and shape of various combinations of steel.
CN201920257765.1U 2019-03-01 2019-03-01 Laminated column concrete beam node structure Expired - Fee Related CN210086482U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109853740A (en) * 2019-03-01 2019-06-07 华南理工大学 A kind of superposed column concrete girder connection construction and construction method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109853740A (en) * 2019-03-01 2019-06-07 华南理工大学 A kind of superposed column concrete girder connection construction and construction method
CN109853740B (en) * 2019-03-01 2024-11-19 华南理工大学 Composite column concrete beam node structure and construction method

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