CN108951886B - Prefabricated assembled concrete anti-seismic node - Google Patents
Prefabricated assembled concrete anti-seismic node Download PDFInfo
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- 239000004567 concrete Substances 0.000 title claims abstract description 93
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 138
- 239000010959 steel Substances 0.000 claims abstract description 138
- 239000011178 precast concrete Substances 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 238000011160 research Methods 0.000 description 7
- 239000003351 stiffener Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000007123 defense Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000283690 Bos taurus Species 0.000 description 1
- 206010034133 Pathogen resistance Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
- E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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Abstract
Description
技术领域technical field
本发明涉及一种建筑连接节点，具体涉及一种预制装配式混凝土抗震节点。The invention relates to a building connection node, in particular to a prefabricated assembled concrete anti-seismic node.
背景技术Background technique
过去的几十年中，我国对结构的研究主要体现在对结构的整体性研究和对构件的抗震性能的研究，对节点方面存在理论上的不足。上世纪80年代初期，节点研究渐渐得到广大学者研究人员的重视。对此国内外学者均有一系列研究。但就目前的研究，尤其是国内的研究看来，主要问题和局限在于：第一，大部分设计不能完全脱离现浇，采用干湿结合式，依然存在现场焊接的情况，不能做到高效快捷；第二，节点设计太过于复杂，配件繁琐，拆换不易。同时在现在的建筑市场上，大部分消费者还是对装配式建筑的抗震性能不够放心，认为节点的抗震性有待商榷，虽然现在我国仍然在大力推广装配式建筑，但是要想真正的使之发展，结构节点抗震性仍然是现在必须也是急需解决的一个问题。In the past few decades, the research on structures in our country is mainly reflected in the research on the integrity of the structure and the research on the seismic performance of components, and there are theoretical deficiencies in the joints. In the early 1980s, node research gradually gained the attention of scholars and researchers. Scholars at home and abroad have done a series of research on this. But as far as the current research, especially the domestic research, the main problems and limitations are: first, most of the designs cannot be completely separated from the cast-in-place, and the combination of dry and wet is used, and there is still the situation of on-site welding, which cannot be efficient and quick ; Second, the node design is too complicated, the accessories are cumbersome, and it is not easy to replace. At the same time, in the current construction market, most consumers are still not at ease with the seismic performance of prefabricated buildings. Therefore, the seismic resistance of structural joints is still a problem that must be solved urgently.
发明内容Contents of the invention
本发明的目的在于提供一种预制装配式混凝土抗震节点，其拼装简单、方便快捷，且抗震效果好。The object of the present invention is to provide a prefabricated assembled concrete anti-seismic joint, which is simple, convenient and quick to assemble, and has good anti-seismic effect.
为实现上述目的，本发明提供如下技术方案：To achieve the above object, the present invention provides the following technical solutions:
一种预制装配式混凝土抗震节点，包括预制的混凝土柱、预制的混凝土梁、上部连接钢板、下部连接钢板、横向螺栓、竖向钢垫板、竖向螺栓，所述预制的混凝土柱带有牛腿，所述混凝土柱远离混凝土梁的一端上设有两个矩形凹槽，所述矩形凹槽与竖向钢垫板相适配，所述矩形凹槽内分别设有横向螺栓孔一横向贯穿混凝土柱，所述预制的混凝土梁截面为T型，所述混凝土梁的端头处留有与横向螺栓孔一相适配的横向螺栓孔二，所述混凝土梁靠近端头处竖直设有竖向螺栓孔一，所述下部连接钢板呈L型，所述下部连接钢板的竖板上设有横向螺栓孔三，所述下部连接钢板的横板上设有竖向螺栓孔二，所述下部连接钢板安装在牛腿上端且其竖板与混凝土柱紧靠，所述上部连接钢板的形状与“T”逆时针旋转90°之后的形状相同，所述上部连接钢板的竖板上设有横向螺栓孔四，所述上部连接钢板的横板上设有竖向螺栓孔三，所述上部连接钢板的竖板安装在下部连接钢板的竖板上端，所述混凝土梁安装在上部连接钢板和下部连接钢板之间，所述竖向钢垫板分别安装在矩形凹槽内和混凝土梁端头远离矩形凹槽的一端，所述横向螺栓依次穿过混凝土柱上的竖向钢垫板、横向螺栓孔一、横向螺栓孔三或横向螺栓孔四、横向螺栓孔二、混凝土梁上的竖向钢垫板将混凝土柱和梁锚固连接，所述竖向螺栓依次穿过竖向螺栓孔三、竖向螺栓孔一、竖向螺栓孔二将混凝土梁与上部连接钢板和下部连接钢板紧固。A prefabricated assembled concrete seismic node, including prefabricated concrete columns, prefabricated concrete beams, upper connecting steel plates, lower connecting steel plates, transverse bolts, vertical steel backing plates, and vertical bolts, the prefabricated concrete columns have cattle Two rectangular grooves are arranged on the end of the concrete column away from the concrete beam, and the rectangular grooves are adapted to the vertical steel backing plate, and the horizontal bolt holes and the horizontal penetrating holes are respectively arranged in the rectangular grooves Concrete column, the cross-section of the prefabricated concrete beam is T-shaped, the end of the concrete beam is left with a horizontal bolt hole 2 matching the horizontal bolt hole 1, and the concrete beam is vertically provided near the end. One vertical bolt hole, the lower connecting steel plate is L-shaped, three horizontal bolt holes are arranged on the vertical plate of the lower connecting steel plate, two vertical bolt holes are arranged on the horizontal plate of the lower connecting steel plate, the The lower connecting steel plate is installed on the upper end of the corbel and its vertical plate is close to the concrete column. The shape of the upper connecting steel plate is the same as that after the “T” is rotated 90° counterclockwise. The vertical plate of the upper connecting steel plate is provided with Four horizontal bolt holes, three vertical bolt holes are arranged on the horizontal plate of the upper connecting steel plate, the vertical plate of the upper connecting steel plate is installed on the upper end of the vertical plate of the lower connecting steel plate, and the concrete beam is installed on the upper connecting steel plate and Between the lower connecting steel plates, the vertical steel backing plates are respectively installed in the rectangular groove and the end of the concrete beam far away from the rectangular groove, and the horizontal bolts pass through the vertical steel backing plate and the horizontal bolt on the concrete column in turn. Bolt hole 1, horizontal bolt hole 3 or horizontal bolt hole 4, horizontal bolt hole 2, the vertical steel backing plate on the concrete beam anchors the concrete column and the beam, and the vertical bolts pass through the vertical bolt hole 3, The first vertical bolt hole and the second vertical bolt hole fasten the concrete beam to the upper connecting steel plate and the lower connecting steel plate.
优选地，所述横向螺栓和竖向螺栓均为施加了预应力的螺栓。Preferably, both the horizontal bolts and the vertical bolts are prestressed bolts.
优选地，所述上部连接钢板的横板上端焊接有两个三角形加劲肋。Preferably, two triangular stiffeners are welded to the top of the horizontal plate of the upper connecting steel plate.
优选地，还包括钢制十字抗剪件，所述牛腿上留有十字形孔洞一，所述混凝土梁的端头处竖直贯穿有十字形孔洞二，所述下部连接钢板的横板上设有十字形孔洞三，所述上部连接钢板的横板上设有十字形孔洞四，所述钢制十字抗剪件经十字形孔洞四、十字形孔洞二、十字形孔洞三进入十字形孔洞一内。Preferably, it also includes a steel cross shear member, a cross-shaped hole 1 is left on the corbel, a cross-shaped hole 2 is vertically penetrated at the end of the concrete beam, and the lower part is connected to the horizontal plate of the steel plate A cross-shaped hole 3 is provided, and the horizontal plate connecting the upper part of the steel plate is provided with a cross-shaped hole 4, and the steel cross-shaped shear member enters the cross-shaped hole through the cross-shaped hole 4, the cross-shaped hole 2, and the cross-shaped hole 3 one inside.
优选地，所述钢制十字抗剪件由两个相互垂直的板组成，其中一个板比另外一块板长。Preferably, the steel cross shear member is composed of two mutually perpendicular plates, one of which is longer than the other.
优选地，所述横向螺栓孔一、横向螺栓孔二、横向螺栓分别有八个，所述横向螺栓孔三和横向螺栓孔四分别有四个，所述竖向螺栓孔一、竖向螺栓孔二、竖向螺栓孔三、竖向螺栓分别有三个。Preferably, the first horizontal bolt hole, the second horizontal bolt hole, and eight horizontal bolts respectively, the third horizontal bolt hole and the fourth horizontal bolt hole respectively have four, and the first vertical bolt hole, the vertical bolt hole Two, there are three vertical bolt holes three, three vertical bolts respectively.
优选地，所述上部连接钢板的竖板上焊接有八个钢筋，所述下部连接钢板的竖板和横板上分别焊接有四个钢筋，所述混凝土柱上预留有与钢筋相适配的安装孔。Preferably, eight steel bars are welded on the vertical plate of the upper connecting steel plate, four steel bars are respectively welded on the vertical plate and the horizontal plate of the lower connecting steel plate, and the concrete column is reserved to match the steel bar. the mounting holes.
与现有技术相比，本发明的有益效果是：Compared with prior art, the beneficial effect of the present invention is:
(1)结构简单，设计巧妙，本发明采用三种不同的连接方式来形成三重保护，组成抗震性能优异的节点形式。首先采用8根横向螺栓和4个竖向钢垫板将预制混凝土梁和混凝土柱连接起来，使之很好的受力；其次，通过十字抗剪件穿插进梁柱的连接处，并且下部连接件的钢板也进一步的固定住了十字抗剪件，使节点的抗剪性得到保障；最后，通过上部连接钢板和下部连接钢板与预制的混凝土柱进行锚固连接，然后通过竖向螺栓与预制混凝土梁连接起来，进一步加强节点的强度。因为通过实验，节点破坏一般是发生在梁柱的连接处，更为具体的是在外伸端的梁端部，通过预制混凝土梁的上下部分添加钢板进一步加强混凝土的抗拉能力，强化节点；(1) The structure is simple and the design is ingenious. The present invention adopts three different connection methods to form triple protection, forming a joint form with excellent seismic performance. Firstly, 8 horizontal bolts and 4 vertical steel backing plates are used to connect the prefabricated concrete beams and concrete columns so that they can bear the force well; The steel plate of the connector also further fixes the cross shear member, so that the shear resistance of the joint is guaranteed; finally, the upper connecting steel plate and the lower connecting steel plate are anchored to the prefabricated concrete column, and then the vertical bolt is connected to the prefabricated concrete column. Concrete beams are connected to further strengthen the joints. Because through experiments, node failure generally occurs at the connection of beams and columns, more specifically at the end of the beam at the overhanging end, adding steel plates to the upper and lower parts of the prefabricated concrete beam to further strengthen the tensile capacity of the concrete and strengthen the node;
(2)本发明预制过程精度较高，现场要求极低，对工人基本上是没有要求，方便快捷，安装快速，适合标准化生产；(2) The precision of the prefabrication process of the present invention is high, the site requirements are extremely low, basically there is no requirement for workers, it is convenient and fast, the installation is fast, and it is suitable for standardized production;
(3)本发明节点的强度高，三重连接保护，适合抗震要求较高的地域，具有很好的抗震性能；(3) The strength of the node of the present invention is high, and triple connection protection is suitable for areas with high seismic requirements, and has good seismic performance;
(4)本发明基本上采用拼装和螺栓连接的全干式连接，除了穿插十字抗剪件时的孔洞灌填混凝土，基本上实现了全干连接的方式，摆脱了现场现浇的缺点，也不存在容易出现缺陷的现场焊接工艺，实现了节点的高效优质连接，并节约工期、降低成本；(4) The present invention basically adopts the full-dry connection of assembling and bolted connection, except for the hole filling concrete when the cross shear member is interspersed, basically realizes the full-dry connection mode, gets rid of the shortcomings of cast-in-place, and also There is no on-site welding process that is prone to defects, which realizes efficient and high-quality connection of nodes, saves construction time and reduces costs;
(5)应用便利，本发明的连接节点方便了梁柱连接的安装工作，大部分工作都是在工厂完成，现场只要进行简单的拼装，方便快捷，对技术工人要求很低，真正实现构件装配化。(5) The application is convenient. The connection node of the present invention facilitates the installation work of the beam-column connection. Most of the work is completed in the factory, and only simple assembly is required on site, which is convenient and quick, and the requirements for skilled workers are very low. change.
附图说明Description of drawings
图1是本发明实施例中一种预制装配式混凝土抗震节点的结构示意图；Fig. 1 is a structural schematic diagram of a prefabricated assembled concrete seismic node in an embodiment of the present invention;
图2是本发明实施例中预制混凝土柱的结构示意图；Fig. 2 is the structural representation of prefabricated concrete column in the embodiment of the present invention;
图3是本发明实施例中预制混凝土梁的结构示意图；Fig. 3 is the structural representation of prefabricated concrete beam in the embodiment of the present invention;
图4是本发明实施例中下部连接钢板的结构示意图；Fig. 4 is a schematic structural view of the lower connecting steel plate in an embodiment of the present invention;
图5是本发明实施例中上部连接钢板的结构示意图；Fig. 5 is a schematic structural view of the upper connecting steel plate in an embodiment of the present invention;
图6是本发明实施例中钢制十字抗剪件的结构示意图；Fig. 6 is a structural schematic diagram of a steel cross shear member in an embodiment of the present invention;
图7是本发明实施例中竖向钢垫板的结构示意图；Fig. 7 is a schematic structural view of a vertical steel backing plate in an embodiment of the present invention;
图中，1、混凝土柱，2、混凝土梁，3、上部连接钢板，4、下部连接钢板，5、横向螺栓，6、竖向钢垫板，7、竖向螺栓，8、钢制十字抗剪件，9、牛腿，10、矩形凹槽，11、横向螺栓孔一，12、横向螺栓孔二，13、竖向螺栓孔一，14、横向螺栓孔三，15、竖向螺栓孔二，16、三角形加劲肋，17、横向螺栓孔四，18、竖向螺栓孔三,19、钢筋，20、安装孔，21、十字形孔洞一，22、十字形孔洞二，23、十字形孔洞三，24、十字形孔洞四。In the figure, 1. Concrete column, 2. Concrete beam, 3. Upper connecting steel plate, 4. Lower connecting steel plate, 5. Transverse bolt, 6. Vertical steel backing plate, 7. Vertical bolt, 8. Steel cross-resistance Cutting piece, 9, corbel, 10, rectangular groove, 11, horizontal bolt hole 1, 12, horizontal bolt hole 2, 13, vertical bolt hole 1, 14, horizontal bolt hole 3, 15, vertical bolt hole 2 , 16. Triangular stiffener, 17. Horizontal bolt hole four, 18. Vertical bolt hole three, 19. Steel bar, 20. Mounting hole, 21. Cross-shaped hole one, 22. Cross-shaped hole two, 23. Cross-shaped hole Three, 24, four cross-shaped holes.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
请参阅图1-7所示，一种预制装配式混凝土抗震节点，包括预制的混凝土柱1、预制的混凝土梁2、上部连接钢板3、下部连接钢板4、横向螺栓5、竖向钢垫板6、竖向螺栓7、钢制十字抗剪件8，横向螺栓5和竖向螺栓7均为施加了预应力的螺栓，预制的混凝土柱1带有牛腿9，混凝土柱1远离混凝土梁2的一端上设有两个矩形凹槽10，矩形凹槽10与竖向钢垫板6相适配，矩形凹槽10内分别设有横向螺栓孔一11横向贯穿混凝土柱1，预制的混凝土梁2截面为T型，混凝土梁2的端头处留有与横向螺栓孔一11相适配的横向螺栓孔二12，混凝土梁2靠近端头处竖直设有竖向螺栓孔一13。Please refer to Figure 1-7, a prefabricated assembled concrete seismic joint, including prefabricated concrete column 1, prefabricated concrete beam 2, upper connecting steel plate 3, lower connecting steel plate 4, transverse bolt 5, vertical steel backing plate 6. Vertical bolt 7, steel cross shear member 8, transverse bolt 5 and vertical bolt 7 are prestressed bolts, prefabricated concrete column 1 has corbel 9, and concrete column 1 is far away from concrete beam 2 Two rectangular grooves 10 are arranged on one end of the steel plate, and the rectangular grooves 10 are adapted to the vertical steel backing plate 6. The horizontal bolt holes 11 are respectively arranged in the rectangular grooves 10 and run through the concrete column 1 horizontally. The prefabricated concrete beams 2. The cross-section is T-shaped. The end of the concrete beam 2 has a horizontal bolt hole 12 matching the horizontal bolt hole 11. The concrete beam 2 is vertically provided with a vertical bolt hole 13 near the end.
下部连接钢板4呈L型，下部连接钢板4的竖板上设有横向螺栓孔三14，下部连接钢板4的横板上设有竖向螺栓孔二15，下部连接钢板4安装在牛腿9上端且其竖板与混凝土柱1紧靠。The lower connecting steel plate 4 is L-shaped, the vertical plate of the lower connecting steel plate 4 is provided with a horizontal bolt hole 3 14, the horizontal plate of the lower connecting steel plate 4 is provided with a vertical bolt hole 2 15, and the lower connecting steel plate 4 is installed on the corbel 9 The upper end and its vertical plate are close to the concrete column 1.
上部连接钢板3的形状与“T”逆时针旋转90°之后的形状相同，上部连接钢板3的横板上端焊接有两个三角形加劲肋16，上部连接钢板3的竖板上设有横向螺栓孔四17，上部连接钢板3的横板上设有竖向螺栓孔三18，上部连接钢板3的竖板安装在下部连接钢板4的竖板上端。The shape of the upper connecting steel plate 3 is the same as that after the "T" is rotated counterclockwise by 90°. Two triangular stiffeners 16 are welded on the top of the horizontal plate of the upper connecting steel plate 3, and the vertical plate of the upper connecting steel plate 3 is provided with horizontal bolt holes. Four 17, the horizontal plate of top connection steel plate 3 is provided with vertical bolt hole three 18, and the vertical plate of top connection steel plate 3 is installed on the vertical plate top of bottom connection steel plate 4.
上部连接钢板3的竖板上焊接有八个钢筋19，下部连接钢板4的竖板和横板上分别焊接有四个钢筋19，钢筋均为二级钢筋，混凝土柱1上预留有与钢筋19相适配的安装孔20。Eight steel bars 19 are welded on the vertical plate of the upper connecting steel plate 3, four steel bars 19 are respectively welded on the vertical plate and the horizontal plate of the lower connecting steel plate 4, and the steel bars are all secondary steel bars. 19 matching mounting holes 20.
混凝土梁2安装在上部连接钢板3和下部连接钢板4之间，竖向钢垫板6分别安装在矩形凹槽10内和混凝土梁2端头远离矩形凹槽10的一端，竖向钢垫板6用来穿插横向螺栓5，在受力时防止螺栓孔处受力较大。横向螺栓5依次穿过混凝土柱1上的竖向钢垫板6、横向螺栓孔一11、横向螺栓孔三14或横向螺栓孔四17、横向螺栓孔二12、混凝土梁2上的竖向钢垫板6将混凝土柱1和混凝土梁2锚固连接，竖向螺栓7依次穿过竖向螺栓孔三18、竖向螺栓孔一13、竖向螺栓孔二15将混凝土梁2与上部连接钢板3和下部连接钢板4紧固。The concrete beam 2 is installed between the upper connecting steel plate 3 and the lower connecting steel plate 4, and the vertical steel backing plate 6 is respectively installed in the rectangular groove 10 and the end of the concrete beam 2 away from the rectangular groove 10, and the vertical steel backing plate 6 is used to pass through the transverse bolt 5, and prevents the bolt hole from being stressed when stressed. The horizontal bolt 5 passes through the vertical steel backing plate 6 on the concrete column 1, the first horizontal bolt hole 11, the third horizontal bolt hole 14 or the fourth horizontal bolt hole 17, the second horizontal bolt hole 12, and the vertical steel plate on the concrete beam 2. The backing plate 6 anchors the concrete column 1 and the concrete beam 2, and the vertical bolt 7 sequentially passes through the third vertical bolt hole 18, the first vertical bolt hole 13, and the second vertical bolt hole 15 to connect the concrete beam 2 with the upper steel plate 3 Fasten with the lower connecting steel plate 4.
钢制十字抗剪件8由两个相互垂直的板组成，其中一个板比另外一块板长，牛腿9上留有十字形孔洞一21，混凝土梁2的端头处竖直贯穿有十字形孔洞二22，下部连接钢板4的横板上设有十字形孔洞三23，上部连接钢板3的横板上设有十字形孔洞四24，十字形孔洞四24设置在两个三角形加劲肋16之间，钢制十字抗剪件8经十字形孔洞四24、十字形孔洞二22、十字形孔洞三24进入十字形孔洞一21内。The steel cross shear member 8 is composed of two mutually perpendicular plates, one of which is longer than the other, a cross-shaped hole 21 is left on the corbel 9, and a cross-shaped hole 21 is vertically penetrated at the end of the concrete beam 2. Hole 2 22, cross-shaped hole 3 23 is provided on the horizontal plate connecting the steel plate 4 at the lower part, and cross-shaped hole 4 24 is provided on the horizontal plate connecting the steel plate 3 at the upper part, and the cross-shaped hole 4 24 is arranged between two triangular stiffeners 16 Between them, the steel cross shear member 8 enters the cross-shaped hole one 21 through the cross-shaped hole four 24, the cross-shaped hole two 22, and the cross-shaped hole three 24.
横向螺栓孔一11、横向螺栓孔二12、横向螺栓5分别有八个，横向螺栓孔三14和横向螺栓孔四17分别有四个，竖向螺栓孔一13、竖向螺栓孔二15、竖向螺栓孔三18、竖向螺栓7分别有三个。Horizontal bolt hole one 11, horizontal bolt hole two 12, horizontal bolt 5 have eight respectively, horizontal bolt hole three 14 and horizontal bolt hole four 17 have four respectively, vertical bolt hole one 13, vertical bolt hole two 15, There are three vertical bolt holes 18 and three vertical bolts 7 respectively.
具体操作如下：首先在工厂预制混凝土柱1、混凝土梁2、上部连接钢板3、下部连接钢板4、钢制十字抗剪件8，在混凝土柱1上预留矩形凹槽10、横向螺栓孔一11、十字形孔洞一21、安装孔20，将钢筋19分别焊接在下部连接钢板4和上部连接钢板3上，然后将下部连接钢板4和上部连接钢板3的钢筋19分别插入相应的安装孔20与混凝土柱1锚固，上部连接钢板3的横板与下部连接钢板4的横板之间的距离与预制混凝土梁2的端头截面高度相同，方便后期混凝土梁2插入。在混凝土梁2上预留横向螺栓孔二12、竖向螺栓孔一13、十字形孔洞二22。The specific operation is as follows: first, prefabricate concrete column 1, concrete beam 2, upper connecting steel plate 3, lower connecting steel plate 4, and steel cross shear member 8 in the factory, and reserve a rectangular groove 10 and a horizontal bolt hole on the concrete column 1. 11. Cross-shaped hole 1 21, installation hole 20, respectively weld the steel bars 19 on the lower connecting steel plate 4 and the upper connecting steel plate 3, and then insert the reinforcing bars 19 of the lower connecting steel plate 4 and the upper connecting steel plate 3 into the corresponding mounting holes 20 Anchored with the concrete column 1, the distance between the horizontal plate of the upper connecting steel plate 3 and the horizontal plate of the lower connecting steel plate 4 is the same as the end section height of the precast concrete beam 2, which is convenient for the later insertion of the concrete beam 2. Two horizontal bolt holes 12, one vertical bolt hole 13 and two cross-shaped holes 22 are reserved on the concrete beam 2.
将上述构件运至施工现场，用吊车将混凝土梁2推送到上部连接钢板3和下部连接钢板4之间，不采用传统的接缝处灌浆工艺；首先将竖向钢垫板6分别安装在混凝土柱1和混凝土梁2上，将8根长的横向螺栓5穿过竖向钢垫板6插入梁和柱的连接处，在有钢板区域进行扭紧，施加预紧力，使梁与柱完成初步连接，横向螺栓6将起到拉紧固定的作用，发生上下震动时先要克服起拉力，起到减小振幅，消耗地震能量的作用，构成抗震的第一道防线；然后将钢制十字抗剪件8从经十字形孔洞四24、十字形孔洞二22、十字形孔洞三24插入十字形孔洞一21内，进柱牛腿9孔洞的底部，然后灌入比原来混凝土强度高一级的混凝土或者灌入高强度的砂浆，让其自然养护，提高了梁柱节点的抗剪性，钢制十字抗剪件8可以承受混凝土柱1脚底部的水平剪力，具有限制节点发生上下摆动的效果，构成梁柱节点的第二道工序；最后，利用竖向螺栓7将上部连接钢板3和下部连接钢板4与混凝土梁2紧密连接起来，由于混凝土梁2抗拉性能不是很强，特别是在梁柱连接处的节点位置经常容易拉裂，当与连接钢板连接后将极大提高其抗拉性的，向下运动有加劲肋的钢板、横向螺栓抗拉，向上运动时有横向螺栓、钢制十字抗剪件、钢板能提供拉力，极大的提高了节点的抗震性能，构成加强节点抗震性的第三道防线。Transport the above components to the construction site, push the concrete beam 2 between the upper connecting steel plate 3 and the lower connecting steel plate 4 by a crane, without using the traditional joint grouting process; On the column 1 and the concrete beam 2, insert 8 long horizontal bolts 5 through the vertical steel backing plate 6 into the connection between the beam and the column, tighten them in the area with steel plates, and apply pre-tightening force to complete the preliminary connection between the beam and the column , the horizontal bolt 6 will play the role of tightening and fixing. When the up and down vibration occurs, the pulling force must be overcome to reduce the amplitude and consume the seismic energy, which constitutes the first line of defense against earthquakes; Part 8 is inserted into the cross-shaped hole one 21 from the cross-shaped hole four 24, the cross-shaped hole two 22, and the cross-shaped hole three 24, and enters the bottom of the column corbel 9 hole, and then pours concrete with a higher strength than the original concrete Or pour high-strength mortar and allow it to maintain naturally, which improves the shear resistance of the beam-column joint. The steel cross shear member 8 can bear the horizontal shear force at the bottom of the concrete column 1 foot, and has the effect of restricting the joint from swinging up and down , forming the second process of the beam-column joint; finally, use the vertical bolt 7 to connect the upper connecting steel plate 3 and the lower connecting steel plate 4 to the concrete beam 2 tightly, because the tensile performance of the concrete beam 2 is not very strong, especially in the The node position at the beam-column connection is often prone to cracking. When it is connected with the connecting steel plate, its tensile resistance will be greatly improved. The steel plate with stiffeners and transverse bolts are tensile when moving downward, and there are transverse bolts and steel when moving upward. The cross shear parts and steel plates can provide tensile force, which greatly improves the seismic performance of the joints, and constitutes the third line of defense to strengthen the joints' seismic resistance.
在本实施例中，节点的强度非常高，具有很好的抗震性，现场基本的操作就是上螺栓和钢制十字抗剪件，基本技术没有要求，适合抗震要求较高的地域，具有很好的抗震性能。其次，大部分精密的工作都是在工厂完成的，由于工厂机械化程度高，这进一步保证了节点的抗震性能，同时现场操作十分简单，对工人要求极低，方便快捷，安装快速，适合标准化生产；本发明基本上采用连接节点采用拼装和螺栓连接的全干式连接，除了穿插十字抗剪件时的孔洞灌填混凝土，基本上实现了全干连接的方式，摆脱了现场现浇的缺点，也不存在容易出现缺陷的现场焊接工艺，实现了节点的高效优质连接，并节约工期、降低成本。In this embodiment, the strength of the joint is very high, and it has good earthquake resistance. The basic operation on site is to install bolts and steel cross shear parts. There is no requirement for basic technology, and it is suitable for areas with high earthquake resistance requirements. seismic performance. Secondly, most of the precise work is done in the factory. Due to the high degree of mechanization of the factory, this further ensures the seismic performance of the nodes. At the same time, the on-site operation is very simple, with extremely low requirements for workers, convenient and fast, and fast installation, suitable for standardized production. ; The present invention basically adopts the full-dry connection in which the connection nodes are assembled and bolted, except that the holes are filled with concrete when the cross shear parts are interspersed, and the full-dry connection is basically realized, and the shortcomings of on-site cast-in-place are eliminated. There is also no on-site welding process that is prone to defects, which realizes efficient and high-quality connection of nodes, saves construction time and reduces costs.
以上内容仅仅是对本发明结构所作的举例和说明，所属本技术领域的技术人员对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，只要不偏离本发明的结构或者超越本权利要求书所定义的范围，均应属于本发明的保护范围。The above content is only an example and description of the structure of the present invention. Those skilled in the art make various modifications or supplements to the described specific embodiments or replace them in similar ways, as long as they do not deviate from the structure of the present invention. Or beyond the scope defined in the claims, all should belong to the protection scope of the present invention.
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