CN114961391A - Assembled node of steel pipe concrete special-shaped column and H-shaped steel beam - Google Patents
Assembled node of steel pipe concrete special-shaped column and H-shaped steel beam Download PDFInfo
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- 239000004567 concrete Substances 0.000 title claims abstract description 29
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- 239000004574 high-performance concrete Substances 0.000 claims description 4
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Abstract
本发明公开了一种钢管混凝土异形柱与H型钢梁的装配式节点，包括L形角节点、T形边节点和十字形中节点。每种节点包括上柱、下柱、可更换连接板和H型钢梁。上柱包括异形柱钢管Ⅰ以及连接在异形柱钢管Ⅰ下端的外环板Ⅰ，下柱包括异形柱钢管Ⅱ以及连接在异形柱钢管Ⅱ上端的外环板Ⅱ，外环板Ⅰ与外环板Ⅱ相连接。异形柱钢管Ⅱ上连接有H型钢牛腿，H型钢牛腿的腹板和下翼缘均与异形柱钢管Ⅱ侧壁连接，H型钢牛腿的上翼缘与外环板Ⅱ连接。H型钢牛腿通过可更换连接板与H型钢梁连接。所述节点满足建筑装配化发展要求，焊接可在预制场完成，施工现场钢构件组装基本以螺栓连接为主，避免了高空焊接作业，具有安装效率高效，施工质量易于保证的特点。
The invention discloses an assembled node of a concrete-filled steel tube special-shaped column and an H-shaped steel beam, comprising an L-shaped corner node, a T-shaped edge node and a cross-shaped middle node. Each type of joint includes upper column, lower column, replaceable connecting plate and H-beam. The upper column includes the special-shaped column steel pipe I and the outer ring plate I connected to the lower end of the special-shaped column steel pipe I, the lower column includes the special-shaped column steel pipe II and the outer ring plate II connected to the upper end of the special-shaped column steel pipe II, the outer ring plate I and the outer ring plate II is connected. The special-shaped column steel pipe II is connected with an H-shaped steel corbel, the web and lower flange of the H-shaped steel corbel are connected with the side wall of the special-shaped column steel pipe II, and the upper flange of the H-shaped steel corbel is connected with the outer ring plate II. The H-beam corbel is connected to the H-beam through a replaceable connecting plate. The nodes meet the development requirements of building assembly, welding can be completed in the prefabrication field, and the assembly of steel components on the construction site is basically bolted, avoiding high-altitude welding operations, and has the characteristics of high installation efficiency and easy to ensure construction quality.
Description
技术领域technical field
本发明涉及建筑结构技术领域，具体涉及一种钢管混凝土异形柱与H型钢梁的装配式节点。The invention relates to the technical field of building structures, in particular to a prefabricated node of a concrete-filled steel tube special-shaped column and an H-shaped steel beam.
背景技术Background technique
钢管混凝土异形柱结构可以避免柱楞外露，提高了建筑室内空间利用率，同时又具有良好的力学与施工性能。钢管混凝土异形柱的连接构造是决定异形柱框架结构体系抗震性能优劣的重要因素。钢管混凝土异形柱结构的连接包括梁-柱连接节点、柱-柱连接节点两大类。传统的钢管混凝土异形柱梁-柱节点连接形式主要有外环板、内隔板等形式。外环板节点作为一种传统的节点连接形式，其承载力高，刚度大，传力路径明确，但是下环板外露占用了较多的室外空间，与异形柱的设计理念相悖，不适用于学校、住宅等建筑。内隔板节点解决了连接件突出的问题，有着良好的建筑功能，但异形柱钢管空腔狭小，使用内隔板不利于节点区混凝土的浇筑和振捣。传统的外钢管主要采用施工现场焊接的方式进行连接，然后再浇筑柱内混凝土。由于外钢管焊接常在施工场地完成，现场焊接量大，安装效率低下。特别是在高层应用时，往往会在高空进行高危险性焊接作业，且施工质量难以保证。因此，为了推广和应用钢管混凝土异形柱结构，需要综合考虑建筑功能、力学性能和施工性能三个方面，提出一种新型装配式节点。The CFST special-shaped column structure can avoid the exposed column corrugation, improve the utilization rate of indoor space of the building, and at the same time have good mechanical and construction performance. The connection structure of the CFST special-shaped column is an important factor to determine the seismic performance of the special-shaped column frame structure system. The connection of CFST special-shaped column structure includes two types of beam-column connection nodes and column-column connection nodes. The traditional CFST special-shaped column-beam-column connection forms mainly include outer ring plate and inner partition plate. As a traditional joint connection form, the outer ring plate node has high bearing capacity, high stiffness and clear force transmission path, but the exposed lower ring plate occupies a lot of outdoor space, which is contrary to the design concept of special-shaped column and is not suitable for Schools, residential buildings, etc. The inner clapboard node solves the problem of prominent connectors and has a good building function, but the cavity of the special-shaped column steel pipe is narrow, and the use of the inner clapboard is not conducive to the pouring and vibrating of the concrete in the node area. The traditional outer steel pipes are mainly connected by welding on the construction site, and then the concrete in the column is poured. Since the outer steel pipe welding is often completed at the construction site, the on-site welding volume is large and the installation efficiency is low. Especially in high-rise applications, high-risk welding operations are often carried out at high altitudes, and the construction quality is difficult to guarantee. Therefore, in order to popularize and apply the CFST special-shaped column structure, it is necessary to comprehensively consider the three aspects of building function, mechanical performance and construction performance, and propose a new type of prefabricated joint.
发明内容SUMMARY OF THE INVENTION
本发明的目的是提供一种钢管混凝土异形柱与H型钢梁的装配式节点，以解决现有技术中存在的问题。The purpose of the present invention is to provide a prefabricated joint of a CFST special-shaped column and an H-shaped steel beam, so as to solve the problems existing in the prior art.
为实现本发明目的而采用的技术方案是这样的，一种钢管混凝土异形柱与H型钢梁的装配式节点，包括L形角节点、T形边节点和十字形中节点。The technical solution adopted to achieve the purpose of the present invention is as follows, a prefabricated node of a CFST special-shaped column and an H-shaped steel beam, including an L-shaped corner node, a T-shaped edge node and a cross-shaped middle node.
所述十字形中节点包括上柱Ⅰ、下柱Ⅰ、可更换连接板和H型钢梁。The cross-shaped middle node includes an upper column I, a lower column I, a replaceable connecting plate and an H-shaped steel beam.
所述上柱Ⅰ包括异形柱钢管Ⅰ以及连接在异形柱钢管Ⅰ下端的外环板Ⅰ，下柱Ⅰ包括异形柱钢管Ⅱ以及连接在异形柱钢管Ⅱ上端的外环板Ⅱ，外环板Ⅰ与外环板Ⅱ相互贴合并连接。The upper column I includes a special-shaped column steel pipe I and an outer ring plate I connected to the lower end of the special-shaped column steel pipe I. The lower column I includes a special-shaped column steel pipe II and an outer ring plate II connected to the upper end of the special-shaped column steel pipe II. The outer ring plate I It is attached and connected with the outer ring plate II.
所述异形柱钢管Ⅰ和异形柱钢管Ⅱ的横截面均呈十字形，四个H型钢牛腿分别焊接在异形柱钢管Ⅱ的四根柱肢上，这四个H型钢牛腿的腹板和下翼缘均与柱肢连接，上翼缘与外环板Ⅱ连接。The cross-sections of the special-shaped column steel pipe I and the special-shaped column steel pipe II are both cross-shaped, and the four H-shaped steel corbels are respectively welded on the four column legs of the special-shaped column steel pipe II. The lower flange is connected with the column limb, and the upper flange is connected with the outer ring plate II.
所述T形边节点包括上柱Ⅱ、下柱Ⅱ、可更换连接板和H型钢梁。The T-shaped edge node includes an upper column II, a lower column II, a replaceable connecting plate and an H-shaped steel beam.
所述上柱Ⅱ包括异形柱钢管Ⅲ以及连接在异形柱钢管Ⅲ下端的外环板Ⅲ，下柱Ⅱ包括异形柱钢管Ⅳ以及连接在异形柱钢管Ⅳ上端的外环板Ⅳ，外环板Ⅲ与外环板Ⅳ相互贴合并连接。The upper column II includes a special-shaped column steel pipe III and an outer ring plate III connected to the lower end of the special-shaped column steel pipe III. The lower column II includes a special-shaped column steel pipe IV and an outer ring plate IV connected to the upper end of the special-shaped column steel pipe IV. The outer ring plate III Fitted and connected with the outer ring plate IV.
所述异形柱钢管Ⅲ和异形柱钢管Ⅳ的横截面均呈T字形，三个H型钢牛腿分别焊接在异形柱钢管Ⅳ的三根柱肢上，这三个H型钢牛腿的腹板和下翼缘均与柱肢连接，上翼缘与外环板Ⅳ连接。The cross-sections of the special-shaped column steel pipe III and the special-shaped column steel pipe IV are both T-shaped, and the three H-shaped steel corbels are respectively welded on the three column legs of the special-shaped column steel pipe IV. The flanges are all connected with the column legs, and the upper flange is connected with the outer ring plate IV.
所述L形角节点包括上柱Ⅲ、下柱Ⅲ、可更换连接板和H型钢梁。The L-shaped corner node includes an upper column III, a lower column III, a replaceable connecting plate and an H-shaped steel beam.
所述上柱Ⅲ包括异形柱钢管Ⅴ以及连接在异形柱钢管Ⅴ下端的外环板Ⅴ，下柱Ⅲ包括异形柱钢管Ⅵ以及连接在异形柱钢管Ⅵ上端的外环板Ⅵ，外环板Ⅴ与外环板Ⅵ相互贴合并连接。The upper column III includes a special-shaped column steel pipe V and an outer ring plate V connected to the lower end of the special-shaped column steel pipe V. The lower column III includes a special-shaped column steel pipe VI and an outer ring plate VI connected to the upper end of the special-shaped column steel pipe VI, and the outer ring plate V Fit and connect with the outer ring plate VI.
所述异形柱钢管Ⅴ和异形柱钢管Ⅵ的横截面均呈L字形，两个H型钢牛腿分别焊接在异形柱钢管Ⅵ的两根柱肢上，这两个H型钢牛腿的腹板和下翼缘均与柱肢连接，上翼缘与外环板Ⅵ连接。The cross-sections of the special-shaped column steel pipe V and the special-shaped column steel pipe VI are both L-shaped, and the two H-shaped steel corbels are respectively welded on the two column legs of the special-shaped column steel pipe VI. The lower flange is connected with the column limb, and the upper flange is connected with the outer ring plate VI.
每个所述H型钢牛腿均通过可更换连接板与H型钢梁连接。Each of the H-shaped steel corbels is connected with the H-shaped steel beam through a replaceable connecting plate.
进一步，所述异形柱钢管Ⅰ和异形柱钢管Ⅱ均包括一根矩形空心钢管和两根U形钢，两根U形钢分别焊接到矩形空心钢管相对的两侧形成截面呈十字形的异形钢管，U形钢Ⅰ的开口朝向矩形空心钢管。Further, the special-shaped column steel pipe I and the special-shaped column steel pipe II both include a rectangular hollow steel pipe and two U-shaped steels, and the two U-shaped steels are respectively welded to the opposite sides of the rectangular hollow steel pipe to form a cross-sectional special-shaped steel pipe. , the opening of the U-shaped steel I faces the rectangular hollow steel pipe.
进一步，所述异形柱钢管Ⅲ和异形柱钢管Ⅳ均包括一根矩形空心钢管和两根U形钢，两根U形钢分别焊接到矩形空心钢管相对的两侧形成截面呈T字形的异形钢管，U形钢的开口朝向矩形空心钢管。Further, the special-shaped column steel pipe III and the special-shaped column steel pipe IV both include a rectangular hollow steel pipe and two U-shaped steels, and the two U-shaped steels are respectively welded to the opposite sides of the rectangular hollow steel pipe to form a special-shaped steel pipe with a T-shaped cross section. , the opening of the U-shaped steel faces the rectangular hollow steel pipe.
进一步，所述异形柱钢管Ⅴ和异形柱钢管Ⅵ均包括一根矩形空心钢管和一根U形钢，U形钢焊接到矩形空心钢管的一侧形成截面呈L形的异形钢管，U形钢的开口朝向矩形空心钢管。Further, the special-shaped column steel pipe V and the special-shaped column steel pipe VI include a rectangular hollow steel pipe and a U-shaped steel, and the U-shaped steel is welded to one side of the rectangular hollow steel pipe to form a special-shaped steel pipe with an L-shaped cross-section. The opening faces the rectangular hollow steel pipe.
进一步，所述异形柱钢管Ⅱ、异形柱钢管Ⅳ和异形柱钢管Ⅵ的每根柱肢上均焊接有两块竖向肋板，两块竖向肋板分别与所在柱肢上的H型钢牛腿下翼缘的两侧边缘焊接。Further, two vertical ribs are welded on each column limb of the special-shaped column steel pipe II, the special-shaped column steel pipe IV and the special-shaped column steel pipe VI, and the two vertical ribs are respectively connected with the H-shaped steel cows on the column limbs. Weld the edges on both sides of the lower flange of the leg.
进一步，所述可更换连接板包括两块犬骨型翼缘盖板和两块腹板连接板。Further, the replaceable connecting plate includes two canine-bone flange cover plates and two web connecting plates.
所述H型钢牛腿远离异形柱钢管的一端靠近H型钢梁的端部，H型钢牛腿的上下翼缘分别与H型钢梁的上下翼缘齐平，H型钢牛腿的腹板与H型钢梁的腹板对齐。The end of the H-shaped steel corbel far from the special-shaped column steel pipe is close to the end of the H-shaped steel beam, the upper and lower flanges of the H-shaped steel corbel are flush with the upper and lower flanges of the H-shaped steel beam respectively, and the web of the H-shaped steel corbel The webs of the H-beam are aligned.
一块所述犬骨型翼缘盖板安装在H型钢牛腿的上翼缘和H型钢梁的上翼缘并采用若干高强螺栓连接，另一块犬骨型翼缘盖板安装在H型钢牛腿的下翼缘和H型钢梁的下翼缘并采用若干高强螺栓连接，两块腹板连接板分别位于H型钢牛腿腹板的两侧，两块腹板连接板均采用若干高强螺栓与H型钢牛腿腹板以及H型钢梁腹板连接。One of the dog-bone flange cover plates is installed on the upper flange of the H-shaped steel corbel and the upper flange of the H-shaped steel beam and is connected by several high-strength bolts, and the other dog-bone flange cover plate is installed on the H-shaped steel cow. The lower flange of the leg and the lower flange of the H-shaped steel beam are connected by several high-strength bolts. The two web connecting plates are located on both sides of the H-shaped steel corbel web respectively. Connect with H-beam corbel web and H-beam web.
进一步，所述外环板Ⅰ与外环板Ⅱ采用若干高强螺栓连接，外环板Ⅲ与外环板Ⅳ采用若干高强螺栓连接，外环板Ⅴ与外环板Ⅵ采用若干高强螺栓连接。Further, the outer ring plate I and the outer ring plate II are connected by several high-strength bolts, the outer ring plate III and the outer ring plate IV are connected by a number of high-strength bolts, and the outer ring plate V and the outer ring plate VI are connected by a number of high-strength bolts.
进一步，所述外环板Ⅰ与外环板Ⅱ的形状一致，外环板Ⅱ朝着四根H型钢梁的方向延伸且截面尺寸逐渐减少，外环板Ⅱ的四个延伸端的端面尺寸分别与四个H型钢牛腿上翼缘的端面尺寸一致且相互焊接。Further, the shape of the outer ring plate I and the outer ring plate II are consistent, the outer ring plate II extends in the direction of the four H-shaped steel beams and the cross-sectional size gradually decreases, and the end face dimensions of the four extending ends of the outer ring plate II are respectively. Consistent with the end faces of the upper flanges of the four H-beam corbels and welded to each other.
所述外环板Ⅲ与外环板Ⅳ的形状一致，外环板Ⅳ朝着三根H型钢梁的方向延伸且截面尺寸逐渐减少，外环板Ⅳ的三个延伸端的端面尺寸分别与三个H型钢牛腿上翼缘的端面尺寸一致且相互焊接。The shape of the outer ring plate III is the same as that of the outer ring plate IV, the outer ring plate IV extends in the direction of the three H-shaped steel beams and the cross-sectional size gradually decreases, and the end face dimensions of the three extending ends of the outer ring plate IV are The end faces of the upper flanges of the H-beam corbels are of the same size and welded to each other.
所述外环板Ⅴ与外环板Ⅵ的形状一致，外环板Ⅵ朝着两根H型钢梁的方向延伸且截面尺寸逐渐减少，外环板Ⅵ的两个延伸端的端面尺寸分别与两个H型钢牛腿上翼缘的端面尺寸一致且相互焊接。The shape of the outer ring plate V is the same as that of the outer ring plate VI. The outer ring plate VI extends in the direction of the two H-shaped steel beams and the section size gradually decreases. The end faces of the upper flanges of the H-beam corbels are of the same size and welded to each other.
进一步，所述异形柱钢管Ⅰ、异形柱钢管Ⅱ、异形柱钢管Ⅲ、异形柱钢管Ⅳ、异形柱钢管Ⅴ和异形柱钢管Ⅵ内均设置有混凝土。Further, the special-shaped column steel pipe I, the special-shaped column steel pipe II, the special-shaped column steel pipe III, the special-shaped column steel pipe IV, the special-shaped column steel pipe V and the special-shaped column steel pipe VI are all provided with concrete.
进一步，所述混凝土为普通混凝土、轻骨料混凝土、高性能混凝土或再生混凝土。Further, the concrete is ordinary concrete, lightweight aggregate concrete, high performance concrete or recycled concrete.
本发明的有益效果在于：The beneficial effects of the present invention are:
1.多腔钢管混凝土异形柱是将若干个热轧无缝方钢管在角部焊接，形成整体性较好的方钢管混凝土筒束，以延缓钢管局部屈曲和提高对混凝土的约束效应；1. The multi-cavity CFST special-shaped column is to weld several hot-rolled seamless square steel tubes at the corners to form a square concrete-filled steel tube bundle with good integrity, so as to delay the local buckling of the steel tube and improve the restraint effect on the concrete;
2.H型钢梁上翼缘与柱钢管通过外环板连接，且环板兼做柱-柱连接板，同时实现梁-柱与柱-柱连接，减少了材料用量；2. The upper flange of the H-shaped steel beam and the column steel pipe are connected by the outer ring plate, and the ring plate is also used as the column-column connecting plate, and the beam-column and column-column connection is realized at the same time, which reduces the material consumption;
3.H型钢梁下翼缘与柱钢管通过贴焊竖向肋板连接，与外环板连接相比，可以避免连接件突出室内建筑空间，改善建筑美观性，提高了室内空间利用率；与内隔板连接相比，不会影响柱钢管内混凝土的浇筑；3. The lower flange of the H-shaped steel beam and the column steel pipe are connected by the vertical rib plate by welding. Compared with the outer ring plate connection, it can avoid the connecting piece from protruding into the indoor building space, improve the architectural aesthetics, and improve the indoor space utilization rate; Compared with the inner diaphragm connection, it will not affect the pouring of concrete in the column steel pipe;
4.通过削弱翼缘盖板，人为控制梁端塑性铰的位置，避免节点承载力过大，确保梁柱无损坏或轻微损坏，震后只需更换连接装置即可实现结构的震后恢复功能；4. By weakening the flange cover plate, artificially control the position of the plastic hinge at the beam end to avoid excessive bearing capacity of the node and ensure that the beam column is not damaged or slightly damaged. After the earthquake, only the connecting device needs to be replaced to realize the post-earthquake recovery function of the structure. ;
5.该节点满足建筑装配化发展要求，所有焊接工作均可在预制场完成，施工现场钢构件组装基本以螺栓连接为主，避免了高空焊接作业，具有安装效率高效，施工质量易于保证的特点。5. This node meets the development requirements of building assembly. All welding work can be completed in the prefabrication field. The assembly of steel components at the construction site is basically bolted, avoiding high-altitude welding operations, and has the characteristics of efficient installation and easy to ensure construction quality. .
附图说明Description of drawings
图1为十字形中节点的示意图；Fig. 1 is the schematic diagram of the node in the cross shape;
图2为T形边节点的示意图；Figure 2 is a schematic diagram of a T-shaped edge node;
图3为L形角节点的示意图；3 is a schematic diagram of an L-shaped corner node;
图4为异形柱钢管Ⅰ与外环板Ⅰ的连接示意图；Figure 4 is a schematic diagram of the connection between the special-shaped column steel pipe I and the outer ring plate I;
图5为异形柱钢管Ⅱ与外环板Ⅱ的连接示意图；Figure 5 is a schematic diagram of the connection between the special-shaped column steel pipe II and the outer ring plate II;
图6为犬骨型翼缘盖板示意图。FIG. 6 is a schematic diagram of a dog-bone flange cover.
图中：上柱ⅠA1、异形柱钢管ⅠA101、外环板ⅠA102、上柱ⅡA2、上柱ⅢA3、下柱ⅠB1、异形柱钢管ⅡB101、正面柱肢钢板B1011、侧面柱肢钢板B1012、外环板ⅡB102、下柱ⅡB2、下柱ⅢB3、H型钢牛腿B03、竖向肋板B04、可更换连接板C、犬骨型翼缘盖板C01和H型钢梁D。In the picture: upper column IA1, special-shaped column steel pipe IA101, outer ring plate IA102, upper column IIA2, upper column ⅢA3, lower column IB1, special-shaped column steel pipe IIB101, front column limb steel plate B1011, side column limb steel plate B1012, outer ring plate IIB102 , Lower column IIB2, lower column IIIB3, H-beam corbel B03, vertical rib B04, replaceable connecting plate C, dog-bone flange cover plate C01 and H-beam D.
具体实施方式Detailed ways
下面结合实施例对本发明作进一步说明，但不应该理解为本发明上述主题范围仅限于下述实施例。在不脱离本发明上述技术思想的情况下，根据本领域普通技术知识和惯用手段，做出各种替换和变更，均应包括在本发明的保护范围内。The present invention will be further described below in conjunction with the examples, but it should not be understood that the scope of the above-mentioned subject matter of the present invention is limited to the following examples. Without departing from the above-mentioned technical idea of the present invention, various substitutions and changes can be made according to common technical knowledge and conventional means in the field, which shall be included in the protection scope of the present invention.
实施例1：Example 1:
本实施例公开了一种钢管混凝土异形柱与H型钢梁的装配式节点，包括L形角节点、T形边节点和十字形中节点。The present embodiment discloses an assembled node of a CFST special-shaped column and an H-shaped steel beam, including an L-shaped corner node, a T-shaped edge node, and a cross-shaped middle node.
参见图1，所述十字形中节点包括上柱ⅠA1、下柱ⅠB1、可更换连接板C和H型钢梁D。Referring to FIG. 1 , the cross-shaped middle node includes an upper column IA1, a lower column IB1, a replaceable connecting plate C and an H-shaped steel beam D.
参见图4，所述上柱ⅠA1包括异形柱钢管ⅠA101以及连接在异形柱钢管ⅠA101下端的外环板ⅠA102.参见图5，所述下柱ⅠB1包括异形柱钢管ⅡB101以及连接在异形柱钢管ⅡB101上端的外环板ⅡB102，外环板ⅠA102与外环板ⅡB102相互贴合并采用若干高强螺栓连接。Referring to Fig. 4, the upper column IA1 includes a special-shaped column steel pipe IA101 and an outer ring plate IA102 connected to the lower end of the special-shaped column steel pipe IA101. Referring to Fig. 5, the lower column IB1 includes a special-shaped column steel pipe IIB101 and is connected to the upper end of the special-shaped column steel pipe IIB101 The outer ring plate IIB102, the outer ring plate IA102 and the outer ring plate IIB102 are attached to each other and connected by several high-strength bolts.
所述异形柱钢管ⅠA101和异形柱钢管ⅡB101的横截面均呈十字形，四个H型钢牛腿B03分别焊接在异形柱钢管ⅡB101的四根柱肢上，这四个H型钢牛腿B03的腹板和下翼缘均与柱肢连接，上翼缘与外环板ⅡB102连接。The cross-sections of the special-shaped column steel pipe IA101 and the special-shaped column steel pipe IIB101 are both cross-shaped, and the four H-shaped steel corbels B03 are respectively welded on the four column limbs of the special-shaped column steel pipe IIB101. Both the plate and the lower flange are connected with the column legs, and the upper flange is connected with the outer ring plate IIB102.
所述异形柱钢管ⅠA101和异形柱钢管ⅡB101均包括一根矩形空心钢管和两根U形钢，两根U形钢分别焊接到矩形空心钢管相对的两侧形成截面呈十字形的异形钢管，U形钢Ⅰ的开口朝向矩形空心钢管。The special-shaped column steel pipe IA101 and the special-shaped column steel pipe IIB101 both include a rectangular hollow steel pipe and two U-shaped steels, and the two U-shaped steels are respectively welded to the opposite sides of the rectangular hollow steel pipe to form a cross-shaped special-shaped steel pipe. The opening of the shaped steel I faces the rectangular hollow steel pipe.
参见图2，所述T形边节点包括上柱ⅡA2、下柱ⅡB2、可更换连接板C和H型钢梁D。Referring to FIG. 2 , the T-shaped edge node includes an upper column IIA2, a lower column IIB2, a replaceable connecting plate C and an H-shaped steel beam D.
所述上柱ⅡA2包括异形柱钢管Ⅲ以及连接在异形柱钢管Ⅲ下端的外环板Ⅲ，下柱ⅡB2包括异形柱钢管Ⅳ以及连接在异形柱钢管Ⅳ上端的外环板Ⅳ，外环板Ⅲ与外环板Ⅳ相互贴合并采用若干高强螺栓连接。The upper column IIA2 includes the special-shaped column steel pipe III and the outer ring plate III connected to the lower end of the special-shaped column steel pipe III, and the lower column IIB2 includes the special-shaped column steel pipe IV and the outer ring plate IV connected to the upper end of the special-shaped column steel pipe IV, and the outer ring plate III. It is attached to the outer ring plate IV and connected by several high-strength bolts.
所述异形柱钢管Ⅲ和异形柱钢管Ⅳ的横截面均呈T字形，三个H型钢牛腿B03分别焊接在异形柱钢管Ⅳ的三根柱肢上，这三个H型钢牛腿B03的腹板和下翼缘均与柱肢连接，上翼缘与外环板Ⅳ连接。The cross-sections of the special-shaped column steel pipe III and the special-shaped column steel pipe IV are both T-shaped, and the three H-shaped steel corbels B03 are respectively welded on the three column legs of the special-shaped column steel pipe IV. The webs of the three H-shaped steel corbels B03 and the lower flange are connected with the column limb, and the upper flange is connected with the outer ring plate IV.
所述异形柱钢管Ⅲ和异形柱钢管Ⅳ均包括一根矩形空心钢管和两根U形钢，两根U形钢分别焊接到矩形空心钢管相对的两侧形成截面呈T字形的异形钢管，U形钢的开口朝向矩形空心钢管。The special-shaped column steel pipe III and the special-shaped column steel pipe IV both include a rectangular hollow steel pipe and two U-shaped steels, and the two U-shaped steels are respectively welded to the opposite sides of the rectangular hollow steel pipe to form a special-shaped steel pipe with a T-shaped cross-section. The opening of the shaped steel faces the rectangular hollow steel tube.
参见图3，所述L形角节点包括上柱ⅢA3、下柱ⅢB3、可更换连接板C和H型钢梁D。Referring to FIG. 3 , the L-shaped corner node includes an upper column IIIA3, a lower column IIIB3, a replaceable connecting plate C and an H-shaped steel beam D.
所述上柱ⅢA3包括异形柱钢管Ⅴ以及连接在异形柱钢管Ⅴ下端的外环板Ⅴ，下柱ⅢB3包括异形柱钢管Ⅵ以及连接在异形柱钢管Ⅵ上端的外环板Ⅵ，外环板Ⅴ与外环板Ⅵ相互贴合并采用若干高强螺栓连接。The upper column IIIA3 includes a special-shaped column steel pipe V and an outer ring plate V connected to the lower end of the special-shaped column steel pipe V, and the lower column IIIB3 includes a special-shaped column steel pipe VI and an outer ring plate Ⅵ connected to the upper end of the special-shaped column steel pipe VI, and the outer ring plate V It is attached to the outer ring plate VI and connected with several high-strength bolts.
所述异形柱钢管Ⅴ和异形柱钢管Ⅵ的横截面均呈L字形，两个H型钢牛腿B03分别焊接在异形柱钢管Ⅵ的两根柱肢上，这两个H型钢牛腿B03的腹板和下翼缘均与柱肢连接，上翼缘与外环板Ⅵ连接。The cross-sections of the special-shaped column steel pipe V and the special-shaped column steel pipe VI are both L-shaped, and the two H-shaped steel corbels B03 are respectively welded on the two column limbs of the special-shaped column steel pipe VI. Both the plate and the lower flange are connected with the column legs, and the upper flange is connected with the outer ring plate VI.
所述异形柱钢管Ⅴ和异形柱钢管Ⅵ均包括一根矩形空心钢管和一根U形钢，U形钢焊接到矩形空心钢管的一侧形成截面呈L形的异形钢管，U形钢的开口朝向矩形空心钢管。The special-shaped column steel pipe V and the special-shaped column steel pipe VI both include a rectangular hollow steel pipe and a U-shaped steel. The U-shaped steel is welded to one side of the rectangular hollow steel pipe to form a special-shaped steel pipe with an L-shaped cross-section. The opening of the U-shaped steel towards the rectangular hollow steel tube.
每个所述H型钢牛腿B03均通过可更换连接板C与H型钢梁D连接。Each of the H-shaped steel corbels B03 is connected to the H-shaped steel beam D through a replaceable connecting plate C.
所述异形柱钢管ⅡB101、异形柱钢管Ⅳ和异形柱钢管Ⅵ的每根柱肢上均焊接有两块竖向肋板B04，两块竖向肋板B04分别与所在柱肢上的H型钢牛腿B03下翼缘的两侧边缘焊接。如图5所示，所述异形柱钢管ⅡB101的柱肢包括正面柱肢钢板B1011和两块侧面柱肢钢板B1012，两块侧面柱肢钢板B1012上均焊接有竖向肋板B04，H型钢牛腿B03的腹板和下翼缘的端部均焊接到正面柱肢钢板B1011上，上翼缘与外环板ⅡB102连接，H型钢牛腿B03的宽度与正面柱肢钢板B1011的宽度一致且相互对齐。Two vertical ribs B04 are welded on each column limb of the special-shaped column steel pipe IIB101, the special-shaped column steel pipe IV and the special-shaped column steel pipe VI. Weld the edges on both sides of the lower flange of leg B03. As shown in Figure 5, the column legs of the special-shaped column steel pipe IIB101 include a front column leg steel plate B1011 and two side column leg steel plates B1012, and the two side column leg steel plates B1012 are welded with vertical ribs B04, H-shaped steel cattle The ends of the web and lower flange of the leg B03 are welded to the frontal column leg steel plate B1011, the upper flange is connected to the outer ring plate IIB102, and the width of the H-beam corbel B03 is consistent with the width of the frontal column leg steel plate B1011 and is mutually exclusive. Align.
所述可更换连接板C包括两块犬骨型翼缘盖板C01和两块腹板连接板。图6为所述犬骨型翼缘盖板C01的示意图。The replaceable connecting plate C includes two dog-bone flange cover plates C01 and two web connecting plates. FIG. 6 is a schematic diagram of the canine-bone flange cover C01.
所述H型钢牛腿B03远离异形柱钢管的一端靠近H型钢梁D的端部，H型钢牛腿B03的上下翼缘分别与H型钢梁D的上下翼缘齐平，H型钢牛腿B03的腹板与H型钢梁D的腹板对齐。The end of the H-shaped steel corbel B03 away from the special-shaped column steel pipe is close to the end of the H-shaped steel beam D, the upper and lower flanges of the H-shaped steel corbel B03 are flush with the upper and lower flanges of the H-shaped steel beam D respectively, and the H-shaped steel corbel The web of B03 is aligned with the web of H-beam D.
一块所述犬骨型翼缘盖板C01安装在H型钢牛腿B03的上翼缘和H型钢梁D的上翼缘并采用若干高强螺栓连接，另一块犬骨型翼缘盖板C01安装在H型钢牛腿B03的下翼缘和H型钢梁D的下翼缘并采用若干高强螺栓连接，两块腹板连接板分别位于H型钢牛腿B03腹板的两侧，两块腹板连接板均采用若干高强螺栓与H型钢牛腿B03腹板以及H型钢梁D腹板连接。One of the dog-bone flange cover plates C01 is installed on the upper flange of the H-shaped steel corbel B03 and the upper flange of the H-shaped steel beam D and connected by several high-strength bolts, and the other dog-bone flange cover plate C01 is installed The lower flange of H-beam corbel B03 and the lower flange of H-beam D are connected by several high-strength bolts. The two web connecting plates are located on both sides of the web of H-beam corbel B03. The connecting plates are connected with the H-beam corbel B03 web and the H-beam D web by several high-strength bolts.
所述外环板ⅠA102与外环板ⅡB102的形状一致，参见图5，外环板ⅡB102朝着四根H型钢梁D的方向延伸且截面尺寸逐渐减少，外环板ⅡB102的四个延伸端的端面尺寸分别与四个H型钢牛腿B03上翼缘的端面尺寸一致且相互焊接。The shape of the outer ring plate IA102 is the same as that of the outer ring plate IIB102. Referring to Figure 5, the outer ring plate IIB102 extends in the direction of the four H-shaped steel beams D and the cross-sectional size gradually decreases. The dimensions of the end faces are respectively the same as those of the upper flanges of the four H-beam corbels B03 and are welded to each other.
所述外环板Ⅲ与外环板Ⅳ的形状一致，外环板Ⅳ朝着三根H型钢梁D的方向延伸且截面尺寸逐渐减少，外环板Ⅳ的三个延伸端的端面尺寸分别与三个H型钢牛腿B03上翼缘的端面尺寸一致且相互焊接。The shape of the outer ring plate III is the same as that of the outer ring plate IV. The outer ring plate IV extends in the direction of the three H-shaped steel beams D and the cross-sectional size is gradually reduced. The end faces of the upper flanges of each H-beam corbel B03 are of the same size and welded to each other.
所述外环板Ⅴ与外环板Ⅵ的形状一致，外环板Ⅵ朝着两根H型钢梁D的方向延伸且截面尺寸逐渐减少，外环板Ⅵ的两个延伸端的端面尺寸分别与两个H型钢牛腿B03上翼缘的端面尺寸一致且相互焊接。The shape of the outer ring plate V is the same as that of the outer ring plate VI. The outer ring plate VI extends in the direction of the two H-shaped steel beams D and the section size gradually decreases. The end face dimensions of the two extending ends of the outer ring plate VI are The end faces of the upper flanges of the two H-beam corbels B03 are of the same size and welded to each other.
所述异形柱钢管ⅠA101、异形柱钢管ⅡB101、异形柱钢管Ⅲ、异形柱钢管Ⅳ、异形柱钢管Ⅴ和异形柱钢管Ⅵ内均设置有混凝土。所述混凝土为普通混凝土、轻骨料混凝土、高性能混凝土或再生混凝土。The special-shaped column steel pipe IA101, the special-shaped column steel pipe IIB101, the special-shaped column steel pipe III, the special-shaped column steel pipe IV, the special-shaped column steel pipe V and the special-shaped column steel pipe VI are all provided with concrete. The concrete is ordinary concrete, lightweight aggregate concrete, high performance concrete or recycled concrete.
实施例2：Example 2:
本实施例公开了一种钢管混凝土异形柱与H型钢梁的装配式节点，包括L形角节点、T形边节点和十字形中节点。The present embodiment discloses an assembled node of a CFST special-shaped column and an H-shaped steel beam, including an L-shaped corner node, a T-shaped edge node, and a cross-shaped middle node.
参见图1，所述十字形中节点包括上柱ⅠA1、下柱ⅠB1、可更换连接板C和H型钢梁D。Referring to FIG. 1 , the cross-shaped middle node includes an upper column IA1, a lower column IB1, a replaceable connecting plate C and an H-shaped steel beam D.
参见图4，所述上柱ⅠA1包括异形柱钢管ⅠA101以及连接在异形柱钢管ⅠA101下端的外环板ⅠA102.参见图5，所述下柱ⅠB1包括异形柱钢管ⅡB101以及连接在异形柱钢管ⅡB101上端的外环板ⅡB102，外环板ⅠA102与外环板ⅡB102相互贴合并连接。Referring to Fig. 4, the upper column IA1 includes a special-shaped column steel pipe IA101 and an outer ring plate IA102 connected to the lower end of the special-shaped column steel pipe IA101. Referring to Fig. 5, the lower column IB1 includes a special-shaped column steel pipe IIB101 and is connected to the upper end of the special-shaped column steel pipe IIB101 The outer ring plate IIB102, the outer ring plate IA102 and the outer ring plate IIB102 are attached and connected to each other.
所述异形柱钢管ⅠA101和异形柱钢管ⅡB101的横截面均呈十字形，四个H型钢牛腿B03分别焊接在异形柱钢管ⅡB101的四根柱肢上，这四个H型钢牛腿B03的腹板和下翼缘均与柱肢连接，上翼缘与外环板ⅡB102连接。The cross-sections of the special-shaped column steel pipe IA101 and the special-shaped column steel pipe IIB101 are both cross-shaped, and the four H-shaped steel corbels B03 are respectively welded on the four column limbs of the special-shaped column steel pipe IIB101. Both the plate and the lower flange are connected with the column legs, and the upper flange is connected with the outer ring plate IIB102.
参见图2，所述T形边节点包括上柱ⅡA2、下柱ⅡB2、可更换连接板C和H型钢梁D。Referring to FIG. 2 , the T-shaped edge node includes an upper column IIA2, a lower column IIB2, a replaceable connecting plate C and an H-shaped steel beam D.
所述上柱ⅡA2包括异形柱钢管Ⅲ以及连接在异形柱钢管Ⅲ下端的外环板Ⅲ，下柱ⅡB2包括异形柱钢管Ⅳ以及连接在异形柱钢管Ⅳ上端的外环板Ⅳ，外环板Ⅲ与外环板Ⅳ相互贴合并连接。The upper column IIA2 includes the special-shaped column steel pipe III and the outer ring plate III connected to the lower end of the special-shaped column steel pipe III, and the lower column IIB2 includes the special-shaped column steel pipe IV and the outer ring plate IV connected to the upper end of the special-shaped column steel pipe IV, and the outer ring plate III. Fitted and connected with the outer ring plate IV.
所述异形柱钢管Ⅲ和异形柱钢管Ⅳ的横截面均呈T字形，三个H型钢牛腿B03分别焊接在异形柱钢管Ⅳ的三根柱肢上，这三个H型钢牛腿B03的腹板和下翼缘均与柱肢连接，上翼缘与外环板Ⅳ连接。The cross-sections of the special-shaped column steel pipe III and the special-shaped column steel pipe IV are both T-shaped, and the three H-shaped steel corbels B03 are respectively welded on the three column legs of the special-shaped column steel pipe IV. The webs of the three H-shaped steel corbels B03 and the lower flange are connected with the column limb, and the upper flange is connected with the outer ring plate IV.
参见图3，所述L形角节点包括上柱ⅢA3、下柱ⅢB3、可更换连接板C和H型钢梁D。Referring to FIG. 3 , the L-shaped corner node includes an upper column IIIA3, a lower column IIIB3, a replaceable connecting plate C and an H-shaped steel beam D.
所述上柱ⅢA3包括异形柱钢管Ⅴ以及连接在异形柱钢管Ⅴ下端的外环板Ⅴ，下柱ⅢB3包括异形柱钢管Ⅵ以及连接在异形柱钢管Ⅵ上端的外环板Ⅵ，外环板Ⅴ与外环板Ⅵ相互贴合并连接。The upper column IIIA3 includes a special-shaped column steel pipe V and an outer ring plate V connected to the lower end of the special-shaped column steel pipe V, and the lower column IIIB3 includes a special-shaped column steel pipe VI and an outer ring plate Ⅵ connected to the upper end of the special-shaped column steel pipe VI, and the outer ring plate V Fit and connect with the outer ring plate VI.
所述异形柱钢管Ⅴ和异形柱钢管Ⅵ的横截面均呈L字形，两个H型钢牛腿B03分别焊接在异形柱钢管Ⅵ的两根柱肢上，这两个H型钢牛腿B03的腹板和下翼缘均与柱肢连接，上翼缘与外环板Ⅵ连接。The cross-sections of the special-shaped column steel pipe V and the special-shaped column steel pipe VI are both L-shaped, and the two H-shaped steel corbels B03 are respectively welded on the two column limbs of the special-shaped column steel pipe VI. Both the plate and the lower flange are connected with the column legs, and the upper flange is connected with the outer ring plate VI.
每个所述H型钢牛腿B03均通过可更换连接板C与H型钢梁D连接。Each of the H-shaped steel corbels B03 is connected to the H-shaped steel beam D through a replaceable connecting plate C.
实施例3：Example 3:
本实施例主要结构同实施例2，进一步，所述异形柱钢管ⅠA101和异形柱钢管ⅡB101均包括一根矩形空心钢管和两根U形钢，两根U形钢分别焊接到矩形空心钢管相对的两侧形成截面呈十字形的异形钢管，U形钢Ⅰ的开口朝向矩形空心钢管。The main structure of this embodiment is the same as that of Embodiment 2. Further, the special-shaped column steel pipe IA101 and the special-shaped column steel pipe IIB101 both include a rectangular hollow steel pipe and two U-shaped steels, and the two U-shaped steels are respectively welded to the opposite rectangular hollow steel pipes. Special-shaped steel pipes with cross-shaped cross-sections are formed on both sides, and the opening of the U-shaped steel I faces the rectangular hollow steel pipes.
实施例4：Example 4:
本实施例主要结构同实施例2，进一步，所述异形柱钢管Ⅲ和异形柱钢管Ⅳ均包括一根矩形空心钢管和两根U形钢，两根U形钢分别焊接到矩形空心钢管相对的两侧形成截面呈T字形的异形钢管，U形钢的开口朝向矩形空心钢管。The main structure of this embodiment is the same as that of Embodiment 2. Further, the special-shaped column steel pipe III and the special-shaped column steel pipe IV both include a rectangular hollow steel pipe and two U-shaped steels, and the two U-shaped steels are respectively welded to the opposite sides of the rectangular hollow steel pipes. A special-shaped steel pipe with a T-shaped cross-section is formed on both sides, and the opening of the U-shaped steel faces the rectangular hollow steel pipe.
实施例5：Example 5:
本实施例主要结构同实施例2，进一步，所述异形柱钢管Ⅴ和异形柱钢管Ⅵ均包括一根矩形空心钢管和一根U形钢，U形钢焊接到矩形空心钢管的一侧形成截面呈L形的异形钢管，U形钢的开口朝向矩形空心钢管。The main structure of this embodiment is the same as that of Embodiment 2. Further, the special-shaped column steel pipe V and the special-shaped column steel pipe VI include a rectangular hollow steel pipe and a U-shaped steel, and the U-shaped steel is welded to one side of the rectangular hollow steel pipe to form a cross-section. It is an L-shaped special-shaped steel pipe, and the opening of the U-shaped steel faces the rectangular hollow steel pipe.
实施例6：Example 6:
本实施例主要结构同实施例2，进一步，所述异形柱钢管Ⅱ(B101)、异形柱钢管Ⅳ和异形柱钢管Ⅵ的每根柱肢上均焊接有两块竖向肋板B04，两块竖向肋板B04分别与所在柱肢上的H型钢牛腿B03下翼缘的两侧边缘焊接。The main structure of this embodiment is the same as that of Embodiment 2. Further, two vertical rib plates B04 are welded on each column limb of the special-shaped column steel pipe II (B101), the special-shaped column steel pipe IV and the special-shaped column steel pipe VI. The vertical ribs B04 are respectively welded with the two sides of the lower flange of the H-shaped steel corbel B03 on the column leg.
实施例7：Example 7:
本实施例主要结构同实施例2，进一步，所述可更换连接板C包括两块犬骨型翼缘盖板C01和两块腹板连接板。图6为所述犬骨型翼缘盖板C01的示意图。The main structure of this embodiment is the same as that of Embodiment 2. Further, the replaceable connecting plate C includes two dog-bone flange cover plates C01 and two web connecting plates. FIG. 6 is a schematic diagram of the canine-bone flange cover C01.
所述H型钢牛腿B03远离异形柱钢管的一端靠近H型钢梁D的端部，H型钢牛腿B03的上下翼缘分别与H型钢梁D的上下翼缘齐平，H型钢牛腿B03的腹板与H型钢梁D的腹板对齐。The end of the H-shaped steel corbel B03 away from the special-shaped column steel pipe is close to the end of the H-shaped steel beam D, the upper and lower flanges of the H-shaped steel corbel B03 are flush with the upper and lower flanges of the H-shaped steel beam D respectively, and the H-shaped steel corbel The web of B03 is aligned with the web of H-beam D.
一块所述犬骨型翼缘盖板C01安装在H型钢牛腿B03的上翼缘和H型钢梁D的上翼缘并采用若干高强螺栓连接，另一块犬骨型翼缘盖板C01安装在H型钢牛腿B03的下翼缘和H型钢梁D的下翼缘并采用若干高强螺栓连接，两块腹板连接板分别位于H型钢牛腿B03腹板的两侧，两块腹板连接板均采用若干高强螺栓与H型钢牛腿B03腹板以及H型钢梁D腹板连接。One of the dog-bone flange cover plates C01 is installed on the upper flange of the H-shaped steel corbel B03 and the upper flange of the H-shaped steel beam D and connected by several high-strength bolts, and the other dog-bone flange cover plate C01 is installed The lower flange of H-beam corbel B03 and the lower flange of H-beam D are connected by several high-strength bolts. The two web connecting plates are located on both sides of the web of H-beam corbel B03. The connecting plates are connected with the H-beam corbel B03 web and the H-beam D web by several high-strength bolts.
实施例8：Example 8:
本实施例主要结构同实施例2，进一步，所述外环板ⅠA102与外环板ⅡB102采用若干高强螺栓连接，外环板Ⅲ与外环板Ⅳ采用若干高强螺栓连接，外环板Ⅴ与外环板Ⅵ采用若干高强螺栓连接。The main structure of this embodiment is the same as that of Embodiment 2. Further, the outer ring plate IA102 and the outer ring plate IIB102 are connected by several high-strength bolts, the outer ring plate III and the outer ring plate IV are connected by a number of high-strength bolts, and the outer ring plate V and the outer ring plate are connected by several high-strength bolts. Ring plate VI is connected by several high-strength bolts.
实施例9：Example 9:
本实施例主要结构同实施例2，进一步，所述外环板ⅠA102与外环板ⅡB102的形状一致，外环板ⅡB102朝着四根H型钢梁D的方向延伸且截面尺寸逐渐减少，外环板ⅡB102的四个延伸端的端面尺寸分别与四个H型钢牛腿B03上翼缘的端面尺寸一致且相互焊接。The main structure of this embodiment is the same as that of Embodiment 2. Further, the shapes of the outer ring plate IA102 and the outer ring plate IIB102 are the same. The end face dimensions of the four extending ends of the ring plate IIB102 are respectively consistent with the end face dimensions of the upper flanges of the four H-shaped steel corbels B03 and are welded to each other.
所述外环板Ⅲ与外环板Ⅳ的形状一致，外环板Ⅳ朝着三根H型钢梁D的方向延伸且截面尺寸逐渐减少，外环板Ⅳ的三个延伸端的端面尺寸分别与三个H型钢牛腿B03上翼缘的端面尺寸一致且相互焊接。The shape of the outer ring plate III is the same as that of the outer ring plate IV. The outer ring plate IV extends in the direction of the three H-shaped steel beams D and the cross-sectional size is gradually reduced. The end faces of the upper flanges of each H-beam corbel B03 are of the same size and welded to each other.
所述外环板Ⅴ与外环板Ⅵ的形状一致，外环板Ⅵ朝着两根H型钢梁D的方向延伸且截面尺寸逐渐减少，外环板Ⅵ的两个延伸端的端面尺寸分别与两个H型钢牛腿B03上翼缘的端面尺寸一致且相互焊接。The shape of the outer ring plate V is the same as that of the outer ring plate VI. The outer ring plate VI extends in the direction of the two H-shaped steel beams D and the section size gradually decreases. The end face dimensions of the two extending ends of the outer ring plate VI are The end faces of the upper flanges of the two H-beam corbels B03 are of the same size and welded to each other.
实施例10：Example 10:
本实施例主要结构同实施例2，进一步，所述异形柱钢管ⅠA101、异形柱钢管ⅡB101、异形柱钢管Ⅲ、异形柱钢管Ⅳ、异形柱钢管Ⅴ和异形柱钢管Ⅵ内均设置有混凝土。The main structure of this embodiment is the same as that of Embodiment 2. Further, the special-shaped column steel pipe IA101, the special-shaped column steel pipe IIB101, the special-shaped column steel pipe III, the special-shaped column steel pipe IV, the special-shaped column steel pipe V and the special-shaped column steel pipe VI are all provided with concrete.
实施例11：Example 11:
本实施例主要结构同实施例10，进一步，所述混凝土为普通混凝土、轻骨料混凝土、高性能混凝土或再生混凝土。The main structure of this embodiment is the same as that of Embodiment 10. Further, the concrete is ordinary concrete, lightweight aggregate concrete, high-performance concrete or recycled concrete.
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