CN105544801A - Bolted connection technique for prefabricated large plate shear wall provided with concealed bracing and construction method - Google Patents
Bolted connection technique for prefabricated large plate shear wall provided with concealed bracing and construction method Download PDFInfo
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- 238000010276 construction Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title description 4
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 177
- 239000010959 steel Substances 0.000 claims abstract description 177
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 34
- 239000004567 concrete Substances 0.000 claims abstract description 26
- 238000005516 engineering process Methods 0.000 claims abstract description 19
- 238000010079 rubber tapping Methods 0.000 claims abstract description 15
- 238000011065 in-situ storage Methods 0.000 claims abstract description 5
- 230000002787 reinforcement Effects 0.000 claims abstract description 5
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- 239000003351 stiffener Substances 0.000 claims description 10
- 238000009415 formwork Methods 0.000 claims description 6
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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
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
- E04B2/64—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of concrete
- E04B2/68—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of concrete made by filling-up wall cavities
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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
- E04B2103/00—Material constitution of slabs, sheets or the like
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Abstract
本发明公开了一种预制装配式带暗支撑大板剪力墙的螺栓连接技术,包括上、下预制带暗支撑钢筋混凝土大板以及现浇混凝土；所述带暗支撑钢筋混凝土大板包括预留槽口、两角缺口、凸型缺口、钢丝网片、分布钢筋、暗柱纵筋和箍筋、方钢管、X形钢斜撑以及内外连接钢板；所述下端两角缺口有竖向分布钢筋，凸型缺口区域有钢丝网片、外连接钢板、含攻丝螺孔的内连接钢板和竖向分布钢筋；所述两角缺口通过上下两层竖向钢筋间接搭接，中部凸型缺口区域通过上层剪力墙插入下层剪力墙顶端预留槽口，然后将内连接钢板视为螺母，采用高强螺栓连接内外连接钢板；该竖向连接整体性更好，施工更为简单方便，承载能力大幅提高，使结构能发生明显的强节点弱构件效应。
The invention discloses a prefabricated bolt connection technology for a large slab shear wall with concealed support, comprising upper and lower prefabricated reinforced concrete slabs with concealed support and cast-in-situ concrete; the reinforced concrete slab with concealed support includes prefabricated Notches, two corner notches, convex notches, steel wire mesh, distributed steel bars, hidden column longitudinal bars and stirrups, square steel pipes, X-shaped steel diagonal braces, and internal and external connecting steel plates; the two corner notches at the lower end have vertical distribution Reinforcement, the convex gap area has steel wire mesh, external connecting steel plate, internal connecting steel plate with tapping screw holes and vertically distributed reinforcing bars; The area is inserted into the reserved slot at the top of the lower shear wall through the upper shear wall, and then the inner connecting steel plates are regarded as nuts, and high-strength bolts are used to connect the inner and outer connecting steel plates; the vertical connection has better integrity, and the construction is simpler and more convenient. The ability is greatly improved, so that the structure can have obvious strong node weak member effect.
Description
技术领域 technical field
本发明属于预制建筑结构领域，涉及预制建筑物构造，主要涉及预制大板剪力墙结构体系，特别涉及一种预制装配式带暗支撑大板剪力墙的螺栓连接节点技术及施工方法。 The invention belongs to the field of prefabricated building structures, and relates to prefabricated building structures, mainly to a prefabricated large-slab shear wall structure system, and in particular to a bolt connection node technology and construction method of a prefabricated large-slab shear wall with hidden support.
背景技术 Background technique
目前预制装配式混凝土结构主要采用预制或半预制梁柱、楼板和墙板，通过现场施工拼装、浇筑部分混凝土，形成主要受力结构。这种结构体系具有模块化生产、机械化施工的特点，建造质量高，施工速度快，能有效地节省资源，保护环境，有利于促进社会的可持续发展。现阶段国内研究主要集中于预制框架结构领域，预制装配式剪力墙结构抗震性能方面的研究较为少见；保证预制装配式剪力墙结构抗震性能的关键主要体现在节点连接构造措施的设计等方面；传统预制装配式剪力墙结构的连接方式主要有：钢筋与钢板高强螺栓连接、钢筋套筒连接(含剪力键)、角钢焊缝连接、局部无粘结钢筋套筒连接、钢筋与钢管螺栓连接以及预应力连接等；已有的试验研究表明，这些连接方式下装配式剪力墙的抗震性能都比较良好，但终究还是间接连接，和整体现浇式剪力墙结构比较，仍然表现出节点连接薄弱等缺点。 At present, the prefabricated concrete structure mainly adopts prefabricated or semi-prefabricated beams and columns, floor slabs and wall slabs, which are assembled and poured part of the concrete through on-site construction to form the main force-bearing structure. This structural system has the characteristics of modular production and mechanized construction, with high construction quality and fast construction speed, which can effectively save resources, protect the environment, and help promote the sustainable development of society. At present, domestic research mainly focuses on the field of prefabricated frame structures, and research on the seismic performance of prefabricated assembled shear wall structures is relatively rare; the key to ensuring the seismic performance of prefabricated assembled shear wall structures is mainly reflected in the design of structural measures for joint connections. The connection methods of traditional prefabricated shear wall structures mainly include: high-strength bolt connection between steel bar and steel plate, steel sleeve connection (including shear key), angle steel weld connection, local unbonded steel sleeve connection, steel bar and steel pipe Bolt connection and prestressed connection, etc.; existing experimental studies have shown that the seismic performance of prefabricated shear walls under these connection methods is relatively good, but it is still an indirect connection after all. Compared with the overall cast-in-place shear wall structure, it still performs well. Weak outgoing node connection and other shortcomings.
随着结构高度的增大，传统预制装配式剪力墙的厚度也会增大，导致该种预制装配式剪力墙自重增大，不利于运输和吊装，对提高结构的承载能力和地震作用下的延性也较为不利；并且，传统预制装配式剪力墙结构并不设暗柱、边柱，抗震防线单一。 As the height of the structure increases, the thickness of the traditional prefabricated shear wall will also increase, resulting in an increase in the self-weight of the prefabricated shear wall, which is not conducive to transportation and hoisting, and has a negative effect on improving the bearing capacity of the structure and seismic action. The lower ductility is also relatively unfavorable; moreover, the traditional prefabricated shear wall structure does not have hidden columns and side columns, and the anti-seismic defense line is single.
传统的预制装配式大板剪力墙上下墙片螺栓连接中，普遍采用普通高强螺栓，以螺杆和螺母连接上下两片剪力墙的钢板连接件，连接件数量较多，施工方法较为繁琐，不利于大规模推广应用。 In the bolt connection of the upper and lower wall pieces of the traditional prefabricated large-slab shear wall, ordinary high-strength bolts are generally used to connect the steel plate connectors of the upper and lower shear walls with screws and nuts. The number of connectors is large, and the construction method is relatively cumbersome. It is not conducive to large-scale promotion and application.
发明内容 Contents of the invention
本发明针对现有技术的不足,提出了一种预制装配式带暗支撑大板剪力墙结构的螺栓连接技术；该种大板剪力墙的螺栓连接技术由上、下预制带暗支撑钢筋混凝土大板，在现场拼装后现浇必要混凝土组成；该种预制带暗支撑钢筋混凝土大板由预制钢筋混凝土墙板、顶端预留槽口、下端两角缺口、下端中部凸型缺口、水平分布钢筋、竖向分布钢筋、下端焊接带攻丝螺孔的内连接钢板、上段焊接带连接螺孔的外连接钢板、高强螺栓、暗柱纵筋、暗柱箍筋、暗柱方钢管、X形钢板斜撑和钢丝网片组成；该种预制带暗支撑钢筋混凝土大板含暗柱，且暗柱核心含方钢管，方钢管与墙板内X形钢板斜撑焊接连接，方钢管与X形钢板斜撑形成钢骨架，和钢筋网以及混凝土共同受力；显然，该种钢骨架能够提高预制装配式大板剪力墙的承载能力，减薄这种预制构件的厚度，从而可以应用在高层结构中有效减轻结构自重，同时，该种钢骨架的设置使得原来仅有单一抗震防线的预制装配式大板剪力墙具有多道抗震防线；并且，在剪力墙中设置下端两角缺口和凸型缺口以及顶端槽口，凸型缺口内设置钢丝网片，将含攻丝螺孔的内连接钢板视为螺母，采用高强螺栓连接内连接钢板和外连接钢板，此构造能有效保证上下预制装配式大板剪力墙连接节点的整体性，保证可靠连接；可见，该种预制装配式带暗支撑大板剪力墙节点连接可靠，在地震作用下能够发生理想的强节点弱构件效应。 Aiming at the deficiencies of the prior art, the present invention proposes a prefabricated bolt connection technology for a large-slab shear wall structure with concealed support; Concrete slabs are composed of necessary concrete cast after assembly on site; this kind of prefabricated reinforced concrete slab with concealed support consists of prefabricated reinforced concrete wall panels, reserved notches at the top, two corner notches at the lower end, convex notches at the middle of the lower end, and horizontal distribution Steel bars, vertically distributed steel bars, inner connecting steel plates welded with tapping screw holes at the lower end, outer connecting steel plates welded with connecting screw holes at the upper end, high-strength bolts, concealed column longitudinal bars, concealed column stirrups, concealed column square steel pipes, X-shaped Composed of steel plate diagonal braces and steel mesh sheets; this kind of prefabricated reinforced concrete slab with concealed support contains concealed columns, and the core of the concealed columns contains square steel pipes, which are welded to X-shaped steel plate diagonal braces in the wall panels, square steel pipes and X-shaped The steel plate diagonal brace forms a steel skeleton, which is jointly stressed with the steel mesh and concrete; obviously, this kind of steel skeleton can improve the bearing capacity of the prefabricated large-slab shear wall, and reduce the thickness of this prefabricated component, so that it can be applied in high-rise buildings In the structure, the self-weight of the structure is effectively reduced. At the same time, the setting of this kind of steel skeleton makes the prefabricated large-slab shear wall with only a single anti-seismic defense line have multiple anti-seismic defense lines; The convex notch and the top notch, the steel wire mesh is set in the convex notch, the inner connecting steel plate with tapping screw holes is regarded as a nut, and the inner connecting steel plate and the outer connecting steel plate are connected by high-strength bolts, this structure can effectively ensure the upper and lower prefabrication The integrity of the connection nodes of the prefabricated large-slab shear wall ensures reliable connection; it can be seen that the joint connection of the prefabricated large-slab shear wall with hidden support is reliable, and the ideal strong node and weak member effect can occur under earthquake action.
本发明通过以下技术方案来实现： The present invention is realized through the following technical solutions:
一种预制装配式带暗支撑大板剪力墙的螺栓连接技术，包括设置带暗支撑的钢筋混凝土大板，以及现浇普通混凝土； A bolt connection technology for a prefabricated large-slab shear wall with concealed support, including setting a reinforced concrete slab with concealed support and cast-in-place ordinary concrete;
所述带暗支撑的钢筋混凝土大板，大板在工厂预制完成； The reinforced concrete slab with concealed support, the slab is prefabricated in the factory;
所述带暗支撑的钢筋混凝土大板，大板内置带抗剪钉的X形钢板斜撑； The reinforced concrete slab with concealed support has built-in X-shaped steel plate diagonal braces with shear nails;
所述带暗支撑的钢筋混凝土大板，大板两边设暗柱，暗柱核心设方钢管； For the reinforced concrete slab with concealed support, concealed columns are arranged on both sides of the slab, and square steel pipes are arranged at the core of the concealed pillar;
所述带暗支撑的钢筋混凝土大板，大板顶端设预留槽口，预留竖向分布筋、竖向钢筋中部焊接外连接钢板，外连接钢板中心设连接螺孔，预设水平分布钢筋，水平分布钢筋与外连接钢板焊接； For the reinforced concrete slab with hidden support, the top of the slab is provided with a reserved notch, the vertical distribution bars are reserved, the middle part of the vertical steel bar is welded with an external connecting steel plate, the center of the external connecting steel plate is provided with a connecting screw hole, and the horizontally distributed steel bars are preset , the horizontally distributed reinforcement is welded to the outer connecting steel plate;
所述带暗支撑的钢筋混凝土大板，大板下端设两角缺口，预留水平分布钢筋和竖向分布钢筋； For the reinforced concrete slab with concealed support, two corner gaps are set at the lower end of the slab, and horizontally distributed reinforcement bars and vertically distributed reinforcement bars are reserved;
所述方钢管的顶端在内部焊接有加劲肋，加劲肋伸出下层预制大板墙体并伸入上层预制大板墙体一定距离； The top of the square steel pipe is internally welded with a stiffener, and the stiffener protrudes from the lower prefabricated slab wall and extends into the upper prefabricated slab wall for a certain distance;
所述上下两层带暗支撑的钢筋混凝土大板，其X形钢板斜撑和暗柱中方钢管采用L角钢焊接； The upper and lower layers of reinforced concrete slabs with concealed supports, the X-shaped steel plate diagonal braces and concealed column middle steel pipes are welded with L angle steel;
所述带暗支撑的钢筋混凝土大板，在下端中部区域预留凸型缺口，凸型缺口处预留竖向分布钢筋，竖向分布钢筋焊接内连接钢板，内连接钢板中心设攻丝螺孔，在墙板凸型缺口内部预埋钢丝网片； For the reinforced concrete slab with concealed support, a convex notch is reserved in the middle part of the lower end, and vertically distributed steel bars are reserved at the convex notch, and the vertically distributed steel bars are welded to the inner connecting steel plate, and the center of the inner connecting steel plate is provided with a tapping screw hole , Pre-embed the steel wire mesh inside the convex notch of the wall panel;
所述预制装配式带暗支撑大板墙体在下端两角缺口处上下两层竖向分布钢筋间接搭接； The prefabricated large slab wall with hidden support is indirectly overlapped with vertically distributed steel bars on the upper and lower layers at the two corner gaps at the lower end;
所述预制装配式带暗支撑大板墙体在下端中部凸型缺口区域通过上层剪力墙插入下层剪力墙顶端槽口定位，将含攻丝螺孔的内连接钢板视为螺母，采用高强螺栓穿过外连接钢板的连接螺孔与内连接钢板的攻丝螺孔拧紧，将上层内连接钢板与下层外连接钢板连接； The prefabricated large slab wall with hidden support is located in the convex gap area in the middle of the lower end through the upper shear wall inserted into the top notch of the lower shear wall for positioning. Bolts pass through the connecting screw holes of the outer connecting steel plate and tighten the tapping screw holes of the inner connecting steel plate to connect the upper inner connecting steel plate with the lower outer connecting steel plate;
所述预制装配式带暗支撑大板墙体在下端两角缺口及中部凸型缺口区域均填有普通混凝土，形成一个整体。 The prefabricated large slab wall with hidden support is filled with ordinary concrete in the two corner gaps at the lower end and the convex gap area in the middle to form a whole.
作为优选，所述填充混凝土采用微膨胀型自流密实混凝土，该种混凝土能够改善新旧混凝土界面连接性能。 Preferably, the filling concrete adopts micro-expansion type self-flowing dense concrete, which can improve the connection performance of the interface between old and new concrete.
作为优选，所述带暗支撑的钢筋混凝土大板两边暗柱核心设H型钢或者圆钢管。 Preferably, the cores of the hidden columns on both sides of the reinforced concrete slab with hidden supports are provided with H-shaped steel or round steel pipes.
一种上述预制带暗支撑大板剪力墙螺栓连接技术的施工方法，包括以下步骤： A construction method of the above-mentioned prefabricated large-slab shear wall bolt connection technology with concealed support, comprising the following steps:
第一步：将在工厂预制好并达到设计强度的预制带暗支撑装配式大板剪力墙运到现场安装定位并临时固定，将上层预制装配式带暗支撑大板剪力墙吊装就位，嵌入下层预制剪力墙的顶端预留槽口中，同时将下层剪力墙的加劲肋插入上层剪力墙两角缺口处的方钢管内，并上下焊接好； Step 1: Transport the prefabricated large-slab shear wall with concealed support that has been prefabricated in the factory and reach the design strength to the site for installation and positioning and temporarily fix it, and hoist the upper prefabricated assembled large-slab shear wall with concealed support in place , embedded in the reserved notch at the top of the lower prefabricated shear wall, and at the same time, insert the stiffeners of the lower shear wall into the square steel pipes at the two corners of the upper shear wall, and weld them up and down;
第二步：将预制剪力墙两角缺口处的下层竖向分布钢筋与上层竖向分布钢筋间接搭接，采用高强螺栓穿过外连接钢板的连接螺孔与内连接钢板的攻丝螺孔拧紧，将上层内连接钢板与下层外连接钢板连接； Step 2: Indirectly overlap the vertically distributed steel bars of the lower layer and the vertically distributed steel bars of the upper layer at the two corner gaps of the prefabricated shear wall, and use high-strength bolts to pass through the connecting screw holes of the outer connecting steel plate and the tapping screw holes of the inner connecting steel plate Tighten to connect the upper inner connecting steel plate with the lower outer connecting steel plate;
第三步：在预制剪力墙两角缺口及中部凸型缺口处支模，然后向两角缺口、中部凸型缺口以及方钢管内浇筑普通混凝土，待现浇混凝土养护完毕，完成一个典型预制装配式带暗支撑大板剪力墙单元的制作。 Step 3: Set up the formwork at the two corner notches and the central convex notch of the prefabricated shear wall, and then pour ordinary concrete into the two corner notches, the central convex notch and the square steel pipe. After the cast-in-situ concrete is cured, a typical prefabrication is completed Manufacture of prefabricated large slab shear wall unit with concealed support.
与现浇钢筋混凝土剪力墙结构相比，本发明大部分构件均在工厂预制生产，再在现场拼装后浇筑少量必要混凝土，工厂生产效率高，且能够保证制作精度和质量，绿色环保；与现有预制装配式结构连接技术尤其是与现有预制装配式大板剪力墙结构连接技术相比，本发明的预制装配式带暗支撑大板剪力墙螺栓连接技术，其上、下竖向节点连接更为可靠，整体性更好，施工更为简便，连接件数量减少明显，且节点与钢骨架形成整体,使剪力墙承载能力大幅提高，有效减薄了剪力墙的厚度，同时又具有明显的多道抗震防线，在地震作用下表现良好。 Compared with the cast-in-place reinforced concrete shear wall structure, most of the components of the present invention are prefabricated in the factory, and then a small amount of necessary concrete is poured after assembly on site. The factory has high production efficiency, can ensure the manufacturing accuracy and quality, and is environmentally friendly; and Compared with the existing prefabricated assembled structure connection technology, especially compared with the existing prefabricated assembled large slab shear wall structure connection technology, the prefabricated assembled large slab shear wall bolt connection technology with hidden support of the present invention, its upper and lower vertical The connection to the node is more reliable, the integrity is better, the construction is easier, the number of connectors is significantly reduced, and the node and the steel skeleton are integrated, which greatly improves the bearing capacity of the shear wall and effectively reduces the thickness of the shear wall. At the same time, it has obvious multiple anti-seismic defense lines, which perform well under the action of earthquakes.
附图说明 Description of drawings
图1是本发明上层预制墙板定位绑扎必要钢筋且完成内外连接钢板连接后的轴侧示意图。 Fig. 1 is a schematic diagram of the axial side of the upper prefabricated wallboard of the present invention after positioning and binding the necessary steel bars and completing the connection of the inner and outer connecting steel plates.
图2是本发明一个预制装配式带暗支撑大板剪力墙螺栓连接节点的正立面示意图。 Fig. 2 is a schematic diagram of the front elevation of a prefabricated large-slab shear wall bolt connection node with concealed support according to the present invention.
图3是图2的1-1和2-2剖面示意图。 Fig. 3 is a schematic cross-sectional view of 1-1 and 2-2 in Fig. 2 .
图4是本发明预制装配式带暗支撑大板剪力墙中部凸型缺口区域螺栓连接节点剖面示意图。 Fig. 4 is a schematic cross-sectional view of the bolt connection node in the middle part of the convex notch area of the prefabricated large-slab shear wall with hidden support in the present invention.
图5是本发明一片预制装配式带暗支撑钢筋混凝土墙板的轴侧示意图。 Fig. 5 is a schematic axial view of a piece of prefabricated assembled reinforced concrete wall panel with concealed support in the present invention.
图6是本发明钢管与X形钢板斜撑节点的焊接连接示意图。 Fig. 6 is a schematic diagram of the welding connection between the steel pipe of the present invention and the X-shaped steel plate diagonal bracing node.
图7是本发明一片已经浇筑好连接节点的预制装配式大板剪力墙轴侧示意图。 Fig. 7 is a schematic diagram of the axial side of a prefabricated large-slab shear wall with poured connection nodes according to the present invention.
具体实施方式 detailed description
以下结合附图和具体实施方式对本发明作进一步说明： The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:
一个预制装配式带暗支撑大板剪力墙螺栓连接节点技术，包括设置带暗支撑的钢筋混凝土大板3，以及现浇混凝土16； A prefabricated large slab shear wall bolt connection technology with concealed support, including the setting of reinforced concrete slab 3 with concealed support and cast-in-place concrete 16;
所述带暗支撑的钢筋混凝土大板，大板内置带抗剪钉9钢板的X形钢板斜撑8； The reinforced concrete slab with concealed support has built-in X-shaped steel plate diagonal braces 8 with shear nails 9 steel plates;
所述带暗支撑的钢筋混凝土大板，大板两边设暗柱，暗柱核心设方钢管12； For the reinforced concrete slab with hidden support, concealed columns are arranged on both sides of the slab, and square steel pipes 12 are arranged at the core of the concealed column;
所述带暗支撑的钢筋混凝土大板，大板顶端设预留槽口19，预留竖向分布钢筋1，竖向分布钢筋1中部通过连续双面角焊缝焊接外连接钢板5，预设水平分布钢筋2，水平分布钢筋通过双面连续角焊缝与外连接钢板5连接，外连接钢板5中心设连接螺孔20； For the reinforced concrete slab with concealed support, the top of the slab is provided with a reserved notch 19, the vertically distributed steel bars 1 are reserved, and the middle part of the vertically distributed steel bars 1 is welded with the external connecting steel plate 5 through continuous double-sided fillet welds. Horizontally distributed steel bars 2, the horizontally distributed steel bars are connected to the outer connecting steel plate 5 through double-sided continuous fillet welds, and the center of the outer connecting steel plate 5 is provided with a connecting screw hole 20;
所述带暗支撑的钢筋混凝土大板，大板下端设两角缺口15，预留竖向分布钢筋1； For the reinforced concrete slab with hidden support, the lower end of the slab is provided with notches 15 at two corners, and steel bars 1 are reserved for vertical distribution;
所述方钢管12的顶端在内部焊接有加劲肋13，加劲肋13伸出下层预制大板墙体并伸入上层预制大板墙体一定距离； The top of the square steel pipe 12 is internally welded with stiffeners 13, and the stiffeners 13 protrude from the lower prefabricated slab wall and extend into the upper prefabricated slab wall for a certain distance;
所述带暗支撑的钢筋混凝土大板，在下端中部区域预留凸型缺口4，凸型缺口4墙板内部预埋钢丝网片18； For the reinforced concrete slab with hidden support, a convex notch 4 is reserved in the lower middle area, and a steel wire mesh sheet 18 is pre-embedded in the convex notch 4 wallboard;
所述带暗支撑的钢筋混凝土大板，在下端凸型缺口4处预留竖向分布钢筋1，竖向分布钢筋1通过连续双面角焊缝焊接内连接钢板6，内连接钢板6中心设攻丝螺孔21； For the reinforced concrete slab with concealed support, vertically distributed steel bars 1 are reserved at the convex gap 4 at the lower end, and the vertically distributed steel bars 1 are welded to the inner connecting steel plate 6 through continuous double-sided fillet welds, and the center of the inner connecting steel plate 6 is set Tapping screw hole 21;
所述预制装配式带暗支撑大板墙体通过上层剪力墙中部凸型缺口4区域插入下层剪力墙顶端预留槽口19定位，将含攻丝螺孔21的内连接钢板6视为螺母，采用高强螺栓7穿过外连接钢板5的连接螺孔20与内连接钢板6的攻丝螺孔21拧紧，将上层内连接钢板6与下层外连接钢板5连接； The prefabricated large slab wall with hidden support is inserted into the reserved notch 19 at the top of the lower shear wall through the convex gap 4 in the middle of the upper shear wall for positioning, and the inner connecting steel plate 6 containing the tapping screw hole 21 is regarded as Nut, adopt high-strength bolt 7 to pass through the connecting screw hole 20 of the outer connecting steel plate 5 and the tapping screw hole 21 of the inner connecting steel plate 6 to be tightened, the inner connecting steel plate 6 of the upper floor is connected with the outer connecting steel plate 5 of the lower floor;
所述带暗支撑的钢筋混凝土大板，其X形钢板斜撑8和暗柱中方钢管12采用L角钢14焊接。 For the reinforced concrete slab with hidden support, its X-shaped steel plate diagonal brace 8 and the hidden column middle square steel pipe 12 are welded with L angle steel 14.
第一步：在工厂预制带暗支撑的装配式大板，大板顶端设预留槽口19，大板下端两角带有缺口15，且在下端的中部预留凸型缺口4，首先预制带有抗剪钉9的X形钢板斜撑8、焊接有加劲肋13的方钢管12、带有连接螺孔20的外连接钢板5以及带有攻丝螺孔21的内连接钢板6，然后绑扎水平钢筋2和竖向钢筋1，以及暗柱纵筋10和暗柱箍筋11制作钢筋笼，在下端中部凸型缺口处绑扎钢丝网片18，插入X形钢板斜撑8以及方钢管12，然后用L角钢14焊接X形钢板斜撑8和方钢管12的节点，在上端竖向钢筋1中部区域焊接外连接钢板5，在外连接钢板5处焊接水平钢筋2，在下端凸型缺口区域竖向钢筋1处焊接内连接钢板6，方钢管12内在预制时不浇筑混凝土，钢筋和钢骨架制作完毕后支模，预留必要缺口，浇筑混凝土形成预制装配式带暗支撑钢筋混凝土墙板。 Step 1: Prefabricate a prefabricated slab with concealed support in the factory, with a reserved notch 19 on the top of the slab, notches 15 at the two corners of the lower end of the slab, and a convex notch 4 reserved in the middle of the lower end, prefabricated first X-shaped steel plate braces 8 with shear nails 9, square steel pipes 12 welded with stiffeners 13, outer connecting steel plates 5 with connecting screw holes 20 and inner connecting steel plates 6 with tapping screw holes 21, and then Bind horizontal steel bars 2 and vertical steel bars 1, as well as hidden column longitudinal bars 10 and hidden column hoops 11 to make a steel cage, bind steel wire mesh sheets 18 at the convex gap in the middle of the lower end, insert X-shaped steel plate diagonal braces 8 and square steel pipes 12 , and then use L angle steel 14 to weld the node of X-shaped steel plate diagonal brace 8 and square steel pipe 12, weld the outer connecting steel plate 5 in the middle area of the vertical reinforcing bar 1 at the upper end, weld the horizontal reinforcing bar 2 at the outer connecting steel plate 5, and weld the horizontal reinforcing bar 2 at the lower end of the convex notch area 1 place of the vertical steel bar is welded with the internal connecting steel plate 6, and the square steel pipe 12 is not poured with concrete during prefabrication. After the steel bar and steel skeleton are manufactured, the formwork is set up, and the necessary gap is reserved, and the concrete is poured to form a prefabricated assembled reinforced concrete wall panel with hidden support.
第二步：将在工厂预制好并达到设计强度的预制带暗支撑装配式大板剪力墙运到现场安装定位并临时固定，将上层预制装配式带暗支撑大板剪力墙吊装就位，嵌入下层预制剪力墙的顶端预留槽口19中，同时将下层剪力墙的加劲肋13插入上层剪力墙两角缺口15处的方钢管12内，并上下焊接好，将两角缺口15处的下层竖向分布钢筋1与上层竖向分布钢筋1间接搭接，采用高强螺栓7穿过外连接钢板5的连接螺孔20与内连接钢板6的攻丝螺孔21拧紧，将上层内连接钢板6与下层外连接钢板5连接。 Step 2: Transport the prefabricated large-slab shear wall with concealed support that has been prefabricated in the factory and reach the design strength to the site for installation and positioning and temporarily fix it, and hoist the upper prefabricated assembled large-slab shear wall with concealed support in place , embedded in the top reserved notch 19 of the prefabricated shear wall of the lower layer, and at the same time insert the stiffener 13 of the lower shear wall into the square steel pipe 12 at the gap 15 at the two corners of the upper shear wall, and weld them up and down, and the two corners The vertically distributed steel bars 1 of the lower layer at the gap 15 are indirectly overlapped with the vertically distributed steel bars 1 of the upper layer, and the high-strength bolts 7 are used to pass through the connecting screw holes 20 of the outer connecting steel plate 5 and the tapping screw holes 21 of the inner connecting steel plate 6 to tighten. The upper inner connecting steel plate 6 is connected with the lower outer connecting steel plate 5 .
第三步：在两角缺口15及中部凸型缺口4处支模，然后向两角缺口15、中部凸型缺口4以及方钢管12内浇筑普通混凝土16，待现浇混凝土16养护完毕，完成一个典型预制装配式带暗支撑大板剪力墙单元的制作。 Step 3: Formwork is set up at the two corner gaps 15 and the middle convex gap 4, and then ordinary concrete 16 is poured into the two corner gaps 15, the middle convex gap 4 and the square steel pipe 12, and the cast-in-situ concrete 16 is cured and completed. Fabrication of a typical prefabricated large slab shear wall unit with concealed support.
应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。 It should be pointed out that those skilled in the art can make some improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
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Application publication date: 20160504 |