CN105569224B - Concrete filled steel tube edge constraint overlaps monoblock type shear wall and preparation and installation method - Google Patents
Concrete filled steel tube edge constraint overlaps monoblock type shear wall and preparation and installation method Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 223
- 239000010959 steel Substances 0.000 title claims abstract description 223
- 239000004567 concrete Substances 0.000 title claims abstract description 174
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000009434 installation Methods 0.000 title claims abstract description 11
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000011178 precast concrete Substances 0.000 claims abstract description 58
- 230000002787 reinforcement Effects 0.000 claims description 49
- 239000000945 filler Substances 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims 5
- 239000011796 hollow space material Substances 0.000 claims 2
- 230000003014 reinforcing effect Effects 0.000 claims 2
- 229910003460 diamond Inorganic materials 0.000 claims 1
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- 238000010276 construction Methods 0.000 abstract description 9
- 238000009415 formwork Methods 0.000 description 24
- 239000002131 composite material Substances 0.000 description 20
- 238000010586 diagram Methods 0.000 description 5
- 239000011150 reinforced concrete Substances 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
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- 229920002223 polystyrene Polymers 0.000 description 2
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- 238000011065 in-situ storage Methods 0.000 description 1
- 230000035939 shock Effects 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
- 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
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Abstract
本发明公开了一种钢管混凝土边缘约束叠合整体式剪力墙及制备和安装方法，属于混凝土剪力墙领域。该钢管混凝土边缘约束叠合整体式剪力墙包括两块相对设置的预制混凝土面板、位于预制混凝土面板两侧的两个矩形钢管和位于预制混凝土面板之间的至少一个拉结件，其中：预制混凝土面板和矩形钢管合围，中间形成空腔，拉结件的两端分别预埋在预制混凝土面板内；预制混凝土面板内设有水平钢筋和竖向钢筋，水平钢筋的两端分别与矩形钢管焊接在一起；空腔和矩形钢管的中空部分用于施工时现场浇筑混凝土。本发明安装方便；矩形钢管和预制混凝土面板连接可靠，整体性好；水平极限承载力及延性好，抗震性能优越；新老混凝土叠合面不易开裂。
The invention discloses a steel pipe concrete edge constrained superimposed integral shear wall and a preparation and installation method, belonging to the field of concrete shear walls. The edge-constrained laminated monolithic shear wall of steel pipe concrete comprises two opposite prefabricated concrete panels, two rectangular steel pipes located on both sides of the precast concrete panels and at least one tie member between the precast concrete panels, wherein: prefabricated The concrete panel and the rectangular steel pipe are enclosed, and a cavity is formed in the middle, and the two ends of the anchors are respectively embedded in the precast concrete panel; the precast concrete panel is provided with horizontal steel bars and vertical steel bars, and the two ends of the horizontal steel bars are respectively welded to the rectangular steel tubes Together; the cavity and the hollow part of the rectangular steel pipe are used for pouring concrete on site during construction. The invention is easy to install; the connection between the rectangular steel pipe and the prefabricated concrete panel is reliable, and the integrity is good; the horizontal ultimate bearing capacity and ductility are good, and the anti-seismic performance is excellent; the superimposed surface of new and old concrete is not easy to crack.
Description
技术领域technical field
本发明涉及混凝土剪力墙领域，特别是指一种钢管混凝土边缘约束叠合整体式剪力墙及制备和安装方法。The invention relates to the field of concrete shear walls, in particular to an edge-constrained laminated integral shear wall of steel pipe concrete and a preparation and installation method.
背景技术Background technique
把建筑中承重墙布置在合适位置，能够非常有效地抵抗风和地震所引起的水平荷载，并承担水平荷载所引起的大部分水平剪力，因此这些墙体就被称为剪力墙。目前，混凝土剪力墙主要分为现浇混凝土剪力墙、全预制混凝土剪力墙(即工厂预制、现场装配)和半预制混凝土叠合剪力墙(即工厂预制一部分，现场浇筑一部分)，本发明涉及半预制混凝土叠合剪力墙。Arranging the load-bearing walls in the building in a suitable position can effectively resist the horizontal load caused by wind and earthquake, and bear most of the horizontal shear force caused by the horizontal load, so these walls are called shear walls. At present, concrete shear walls are mainly divided into cast-in-place concrete shear walls, fully prefabricated concrete shear walls (that is, factory prefabrication, on-site assembly) and semi-prefabricated concrete composite shear walls (that is, factory prefabrication and on-site pouring). The invention relates to a semi-prefabricated concrete composite shear wall.
半预制混凝土叠合剪力墙的两侧钢筋混凝土面板为工厂预制，面板中间为空腔，运输吊装至工地现场后在空腔内浇筑混凝土形成整体，这种剪力墙竖向连接等同现浇，整体性及抗震性较好，而且省模板，现场湿作业少。但半预制混凝土叠合剪力墙的叠合面新老混凝土粘结性能对其受力性能有较大影响，若叠合面的粗糙度不够，则极易发生叠合开裂从而使得叠合剪力墙的承载力显著降低。The reinforced concrete panels on both sides of the semi-precast concrete laminated shear wall are prefabricated in the factory, and the middle of the panel is a cavity. After being transported and hoisted to the construction site, concrete is poured in the cavity to form a whole. The vertical connection of this shear wall is equivalent to cast-in-situ , good integrity and shock resistance, and save formwork, less wet work on site. However, the bonding performance of new and old concrete on the superimposed surface of semi-precast concrete laminated shear walls has a great influence on its mechanical performance. The bearing capacity of the force wall is significantly reduced.
发明内容Contents of the invention
本发明要解决的技术问题是提供一种钢管混凝土边缘约束叠合整体式剪力墙及制备和安装方法，本发明安装方便；矩形钢管和预制混凝土面板连接可靠，整体性好；水平极限承载力及延性好，抗震性能优越；新老混凝土叠合面不易开裂。The technical problem to be solved by the present invention is to provide a concrete-filled steel tube edge-constrained superimposed integral shear wall and its preparation and installation method. The present invention is easy to install; the connection between the rectangular steel tube and the prefabricated concrete panel is reliable and the integrity is good; the horizontal limit bearing capacity And good ductility, superior seismic performance; new and old concrete superimposed surface is not easy to crack.
为解决上述技术问题，本发明提供技术方案如下：In order to solve the problems of the technologies described above, the present invention provides technical solutions as follows:
一方面，提供一种钢管混凝土边缘约束叠合整体式剪力墙，包括两块相对设置的预制混凝土面板、位于所述预制混凝土面板两侧的两个矩形钢管和位于所述预制混凝土面板之间的至少一个拉结件，其中：On the one hand, there is provided a composite integral shear wall with steel pipe concrete edge restraint, which comprises two oppositely arranged prefabricated concrete panels, two rectangular steel pipes located on both sides of the precast concrete panels, and two rectangular steel pipes located between the precast concrete panels At least one tie piece of which:
所述预制混凝土面板和矩形钢管合围，中间形成空腔，所述拉结件的两端分别预埋在所述预制混凝土面板内；The prefabricated concrete panel is surrounded by a rectangular steel pipe, forming a cavity in the middle, and the two ends of the anchor are respectively pre-buried in the precast concrete panel;
所述预制混凝土面板内设有水平钢筋和竖向钢筋，所述水平钢筋的两端分别与所述矩形钢管焊接在一起；The prefabricated concrete panel is provided with horizontal steel bars and vertical steel bars, and the two ends of the horizontal steel bars are respectively welded together with the rectangular steel pipes;
所述空腔和所述矩形钢管的中空部分用于施工时现场浇筑混凝土。The cavity and the hollow part of the rectangular steel pipe are used for pouring concrete on site during construction.
进一步的，所述拉结件为Z型钢板带、C型钢板带或H型钢板带，所述Z型钢板带、C型钢板带或H型钢板带的两个翼缘分别预埋在所述预制混凝土面板内，所述Z型钢板带、C型钢板带或H型钢板带的腹板上开有孔洞，所述孔洞为圆孔、长圆孔、方孔和/或菱形孔。Further, the tie member is a Z-shaped steel strip, a C-shaped steel strip or an H-shaped steel strip, and the two flanges of the Z-shaped steel strip, C-shaped steel strip or H-shaped steel strip are respectively embedded in the In the prefabricated concrete panel, holes are opened on the web of the Z-shaped steel strip, C-shaped steel strip or H-shaped steel strip, and the holes are round holes, oblong holes, square holes and/or diamond-shaped holes.
进一步的，所述Z型钢板带、C型钢板带或H型钢板带的厚度为0.5-3mm，所述Z型钢板带、C型钢板带或H型钢板带的两个翼缘预埋在所述预制混凝土面板内的厚度不小于20mm。Further, the thickness of the Z-shaped steel strip, C-shaped steel strip or H-shaped steel strip is 0.5-3mm, and the two flanges of the Z-shaped steel strip, C-shaped steel strip or H-shaped steel strip are embedded in the The thickness inside the prefabricated concrete panel is not less than 20mm.
进一步的，所述矩形钢管面向所述空腔一侧的表面上设置有抗剪栓钉。Further, shear pegs are provided on the surface of the rectangular steel pipe facing the cavity.
进一步的，所述竖向钢筋伸出所述预制混凝土面板的上端面，伸出距离应满足所述竖向钢筋所要求的搭接长度。Further, the vertical reinforcement protrudes from the upper end surface of the precast concrete panel, and the protruding distance should meet the required lap length of the vertical reinforcement.
进一步的，所述竖向钢筋伸出所述预制混凝土面板的上端面的距离不小于1.2倍所述竖向钢筋所要求的搭接长度与楼板厚度的总和。Further, the distance that the vertical steel bar protrudes from the upper end surface of the precast concrete panel is not less than 1.2 times the sum of the required lap length of the vertical steel bar and the thickness of the floor slab.
进一步的，所述预制混凝土面板的厚度不少于50mm，所述矩形钢管的材质为Q235B及以上等级钢材，所述预制混凝土面板中的混凝土以及现场施工时的混凝土的等级为C30及以上等级。Further, the thickness of the prefabricated concrete panel is not less than 50 mm, the material of the rectangular steel pipe is Q235B and above grade steel, and the grade of the concrete in the prefabricated concrete panel and the concrete during on-site construction is C30 and above grade.
另一方面，提供一种上述钢管混凝土边缘约束叠合整体式剪力墙的制备方法，包括：On the other hand, there is provided a method for preparing the above-mentioned edge-constrained laminated integral shear wall of concrete filled steel tube, including:
步骤1：将两个矩形钢管按设计所需尺寸竖立固定；Step 1: Vertically fix two rectangular steel pipes according to the size required by the design;
步骤2：将两块预制混凝土面板的竖向钢筋和水平钢筋绑扎固定，并将所述水平钢筋的两端分别焊接到所述两个矩形钢管上；Step 2: Binding and fixing the vertical steel bars and horizontal steel bars of the two prefabricated concrete panels, and welding the two ends of the horizontal steel bars to the two rectangular steel pipes respectively;
步骤3：在中间架立起拉结件，并与两块预制混凝土面板的竖向钢筋或者水平钢筋连接固定；Step 3: erect the anchors on the intermediate frame, and connect and fix them with the vertical reinforcement or horizontal reinforcement of the two precast concrete panels;
步骤4：在中间内侧放置填充物模板并固定，在两外侧设置支护模板并固定；Step 4: Place the filling formwork on the inner side of the middle and fix it, and set the support formwork on the two outer sides and fix it;
步骤5：浇筑混凝土，并将混凝土养护至拆模强度，制得两块预制混凝土面板；Step 5: Pouring concrete and curing the concrete to the strength of formwork removal to obtain two prefabricated concrete panels;
步骤6：抽离中间的填充物模板，拆除两外侧的支护模板。Step 6: Remove the filler formwork in the middle, and remove the support formwork on both sides.
另一方面，提供一种钢管混凝土边缘约束叠合整体式剪力墙的制备方法，包括：On the other hand, a method for preparing composite monolithic shear walls with edge-constrained steel tube concrete is provided, including:
步骤1：将两个矩形钢管按设计所需尺寸平躺固定；Step 1: Lay two rectangular steel pipes flat and fix according to the size required by the design;
步骤2：将下侧的预制混凝土面板的竖向钢筋和水平钢筋绑扎固定，并将所述水平钢筋的两端分别焊接到所述两个矩形钢管上；Step 2: binding and fixing the vertical reinforcement and the horizontal reinforcement of the prefabricated concrete panel on the lower side, and welding the two ends of the horizontal reinforcement to the two rectangular steel pipes respectively;
步骤3：在中间架立起拉结件，并与下侧预制混凝土面板的竖向钢筋或者水平钢筋连接固定；Step 3: erect the anchors on the intermediate frame, and connect and fix them with the vertical reinforcement or horizontal reinforcement of the lower precast concrete panel;
步骤4：在预制混凝土面板两端设置支护模板并固定；Step 4: Set and fix the supporting formwork at both ends of the precast concrete panel;
步骤5：浇筑混凝土，并将混凝土养护至终凝，制得下侧的预制混凝土面板；Step 5: pouring concrete, curing the concrete until final setting, and preparing the lower prefabricated concrete panel;
步骤6：在制得的下侧预制混凝土面板上面放置填充物模板；Step 6: placing a filler formwork on the prepared lower precast concrete panel;
步骤7：将上侧的预制混凝土面板的竖向钢筋和水平钢筋绑扎固定，并将所述水平钢筋的两端分别焊接到所述两个矩形钢管上，并将拉结件与上侧预制混凝土面板的竖向钢筋或者水平钢筋连接固定；Step 7: Bind and fix the vertical steel bars and horizontal steel bars of the precast concrete panel on the upper side, and weld the two ends of the horizontal steel bars to the two rectangular steel pipes respectively, and connect the anchors to the upper precast concrete The vertical reinforcement or horizontal reinforcement of the panel is connected and fixed;
步骤8：浇筑混凝土，并将混凝土养护至拆模强度，制得上侧的预制混凝土面板；Step 8: Pouring concrete and curing the concrete to the strength of form removal to obtain the upper prefabricated concrete panel;
步骤9：拆除预制混凝土面板两端的支护模板，抽离中间的填充物模板。Step 9: Remove the supporting formwork at both ends of the precast concrete panel, and pull out the filling formwork in the middle.
再一方面，提供一种上述钢管混凝土边缘约束叠合整体式剪力墙的安装方法，包括：In yet another aspect, there is provided a method for installing the above-mentioned composite integral shear wall constrained by the edge of the steel pipe concrete, including:
步骤1：将下层钢管混凝土边缘约束叠合整体式剪力墙的竖向钢筋伸出上端面的部分向内弯折，向下层钢管混凝土边缘约束叠合整体式剪力墙的空腔内和矩形钢管的中空部分浇筑混凝土，并浇筑楼板；Step 1: Bending the part of the vertical steel bars protruding from the upper end surface of the lower concrete-filled steel tube edge-constrained superimposed integral shear wall inward, and constraining the edge of the lower concrete-filled steel tube in the cavity and rectangular The hollow part of the steel pipe is poured with concrete, and the floor slab is poured;
步骤2：将上层钢管混凝土边缘约束叠合整体式剪力墙放置在楼板上，并使下层钢管混凝土边缘约束叠合整体式剪力墙的竖向钢筋伸出上端面的部分伸进上层钢管混凝土边缘约束叠合整体式剪力墙的空腔内；Step 2: Place the edge-constrained laminated integral shear wall of the upper concrete-filled steel tube on the floor, and make the vertical reinforcement of the edge-constrained laminated integral shear wall of the lower concrete-filled steel tube protrude into the upper end of the concrete-filled steel tube In the cavity of the edge-constrained laminated monolithic shear wall;
步骤3：使用支架固定上层钢管混凝土边缘约束叠合整体式剪力墙；Step 3: Use brackets to fix the edge-constrained laminated integral shear wall of the upper concrete-filled steel tube;
步骤4：向上层钢管混凝土边缘约束叠合整体式剪力墙的空腔内和矩形钢管的中空部分浇筑混凝土。Step 4: Concrete is poured into the cavity of the laminated monolithic shear wall and the hollow part of the rectangular steel tube constrained by the edge of the steel tube concrete on the upper floor.
本发明具有以下有益效果：The present invention has the following beneficial effects:
本发明的钢管混凝土边缘约束叠合整体式剪力墙安装方便。在安装时，将其吊装至指定位置，然后向空腔内和矩形钢管的中空部分浇筑混凝土，同时浇筑楼板的混凝土，完成本层钢管混凝土边缘约束叠合整体式剪力墙的安装。在安装下一层钢管混凝土边缘约束叠合整体式剪力墙时，将新的钢管混凝土边缘约束叠合整体式剪力墙吊装至已经浇筑的楼板上方，并将上下两层钢管混凝土边缘约束叠合整体式剪力墙连接，最后向新的钢管混凝土边缘约束叠合整体式剪力墙的空腔和矩形钢管的中空部分浇筑混凝土。The steel pipe concrete edge constrained superimposed integral shear wall of the invention is easy to install. During installation, hoist it to the designated position, then pour concrete into the cavity and the hollow part of the rectangular steel pipe, and pour concrete for the floor at the same time, to complete the installation of the edge-constrained composite integral shear wall of steel pipe concrete. When installing the next layer of CFST edge-constrained laminated integral shear wall, hoist the new CFST edge-constrained laminated integral shear wall above the poured floor, and stack the upper and lower layers of CFST edge-constrained Finally, concrete is poured into the cavity of the composite integral shear wall and the hollow part of the rectangular steel tube constrained by the edge of the new steel tube concrete.
本发明的钢管混凝土边缘约束叠合整体式剪力墙中的水平钢筋与矩形钢管直接焊接成整体，使得矩形钢管和预制混凝土面板连接可靠，整体性好。The horizontal steel bar and the rectangular steel pipe in the edge-constrained superimposed integral shear wall of the steel pipe concrete are directly welded as a whole, so that the connection between the rectangular steel pipe and the prefabricated concrete panel is reliable and the integrity is good.
本发明的钢管混凝土边缘约束叠合整体式剪力墙采用矩形钢管+混凝土进行边缘约束，将钢材的延性很好地运用到混凝土结构中，能大大提高水平极限承载力及延性，抗震性能优越。The steel pipe concrete edge restraint superimposed integral shear wall of the present invention adopts rectangular steel pipe + concrete for edge restraint, and the ductility of steel is well applied to the concrete structure, which can greatly improve the horizontal ultimate bearing capacity and ductility, and has excellent seismic performance.
本发明的钢管混凝土边缘约束叠合整体式剪力墙采用拉结件拉结两侧的预制钢筋混凝土面板，在剪力的作用下，钢管混凝土边缘约束叠合整体式剪力墙整体受力，并且拉结件能够阻止新老混凝土叠合面出现开裂。The edge-constrained composite integral shear wall of the steel pipe concrete adopts the prefabricated reinforced concrete panels on both sides of the anchors. And the anchors can prevent cracking on the superimposed surface of old and new concrete.
综上所述，本发明的钢管混凝土边缘约束叠合整体式剪力墙安装方便；矩形钢管和预制混凝土面板连接可靠，整体性好；水平极限承载力及延性好，抗震性能优越；新老混凝土叠合面不易开裂。In summary, the edge-constrained superimposed integral shear wall of steel pipe concrete of the present invention is easy to install; the connection between the rectangular steel pipe and the prefabricated concrete panel is reliable, and the integrity is good; the horizontal ultimate bearing capacity and ductility are good, and the seismic performance is superior; new and old concrete The superimposed surface is not easy to crack.
附图说明Description of drawings
图1为本发明的钢管混凝土边缘约束叠合整体式剪力墙的一个实施例的立体图；Fig. 1 is the three-dimensional view of an embodiment of the edge restraint laminated monolithic shear wall of steel pipe concrete of the present invention;
图2为本发明中的拉结件的三种具体结构示意图；Fig. 2 is three kinds of specific structural schematic diagrams of the anchor in the present invention;
图3为本发明的钢管混凝土边缘约束叠合整体式剪力墙的一个实施例的主体图；Fig. 3 is the main body diagram of an embodiment of the edge-constrained laminated integral shear wall of the steel pipe concrete;
图4为本发明的钢管混凝土边缘约束叠合整体式剪力墙的一个实施例的左体图；Fig. 4 is the left side view of an embodiment of the edge-constrained laminated integral shear wall of the steel pipe concrete;
图5为图3的A-A向剖视图；Fig. 5 is the A-A direction sectional view of Fig. 3;
图6为本发明的钢管混凝土边缘约束叠合整体式剪力墙的制备方法的一个实施例的示意图；Fig. 6 is the schematic diagram of an embodiment of the preparation method of the edge-constrained laminated monolithic shear wall of steel pipe concrete;
图7为图6的B-B向剖视图；Fig. 7 is the B-B direction sectional view of Fig. 6;
图8为图6的C-C向剖视图；Fig. 8 is a C-C cross-sectional view of Fig. 6;
图9为本发明的钢管混凝土边缘约束叠合整体式剪力墙的制备方法的另一个实施例的一个步骤示意图；Fig. 9 is a schematic diagram of a step of another embodiment of the preparation method of the edge-constrained laminated integral shear wall of steel pipe concrete;
图10为本发明的钢管混凝土边缘约束叠合整体式剪力墙的制备方法的另一个实施例的另一个步骤示意图；Fig. 10 is a schematic diagram of another step of another embodiment of the preparation method of the edge-constrained laminated integral shear wall of steel pipe concrete;
图11为图9的D-D向剖视图；Figure 11 is a D-D cross-sectional view of Figure 9;
图12为图10的E-E向剖视图；Fig. 12 is the E-E direction sectional view of Fig. 10;
图13为本发明的钢管混凝土边缘约束叠合整体式剪力墙的安装方法的一个实施例主视图；Fig. 13 is a front view of an embodiment of the installation method of the edge-constrained composite integral shear wall of steel pipe concrete;
图14为本发明的钢管混凝土边缘约束叠合整体式剪力墙的安装方法的一个实施例左视图。Fig. 14 is a left side view of an embodiment of the installation method of the edge-constrained laminated integral shear wall of steel pipe concrete.
具体实施方式detailed description
为使本发明要解决的技术问题、技术方案和优点更加清楚，下面将结合附图及具体实施例进行详细描述。In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.
一方面，本发明提供一种钢管混凝土边缘约束叠合整体式剪力墙，如图1至图5所示，包括两块相对设置的预制混凝土面板1、位于预制混凝土面板1两侧的两个矩形钢管2(当然也包括方形钢管)和位于预制混凝土面板1之间的至少一个拉结件3，其中：On the one hand, the present invention provides an edge-constrained laminated integral shear wall of steel pipe concrete, as shown in Fig. 1 to Fig. Rectangular steel pipes 2 (including square steel pipes of course) and at least one anchor 3 between the precast concrete panels 1, wherein:
预制混凝土面板1和矩形钢管2合围，中间形成空腔4，拉结件3的两端分别预埋在预制混凝土面板1内；The prefabricated concrete panel 1 and the rectangular steel pipe 2 are enclosed, forming a cavity 4 in the middle, and the two ends of the anchors 3 are pre-embedded in the precast concrete panel 1 respectively;
预制混凝土面板1内设有水平钢筋(图中为示出)和竖向钢筋5，水平钢筋的两端分别与矩形钢管2焊接在一起；The prefabricated concrete panel 1 is provided with a horizontal steel bar (shown in the figure) and a vertical steel bar 5, and the two ends of the horizontal steel bar are welded together with the rectangular steel pipe 2 respectively;
空腔4和矩形钢管2的中空部分用于施工时现场浇筑混凝土。The cavity 4 and the hollow part of the rectangular steel pipe 2 are used for pouring concrete on site during construction.
本发明实施例具有以下有益效果：Embodiments of the present invention have the following beneficial effects:
本发明实施例的钢管混凝土边缘约束叠合整体式剪力墙安装方便。在安装时，将其吊装至指定位置，然后向空腔内和矩形钢管的中空部分浇筑混凝土，同时浇筑楼板的混凝土，完成本层钢管混凝土边缘约束叠合整体式剪力墙的安装。在安装下一层钢管混凝土边缘约束叠合整体式剪力墙时，将新的钢管混凝土边缘约束叠合整体式剪力墙吊装至已经浇筑的楼板上方，并将上下两层钢管混凝土边缘约束叠合整体式剪力墙连接，最后向新的钢管混凝土边缘约束叠合整体式剪力墙的空腔和矩形钢管的中空部分浇筑混凝土。The edge-constrained composite integral shear wall of the steel pipe concrete in the embodiment of the present invention is easy to install. During installation, hoist it to the designated position, then pour concrete into the cavity and the hollow part of the rectangular steel pipe, and pour concrete for the floor at the same time, to complete the installation of the edge-constrained composite integral shear wall of steel pipe concrete. When installing the next layer of CFST edge-constrained laminated integral shear wall, hoist the new CFST edge-constrained laminated integral shear wall above the poured floor, and stack the upper and lower layers of CFST edge-constrained Finally, concrete is poured into the cavity of the composite integral shear wall and the hollow part of the rectangular steel tube constrained by the edge of the new steel tube concrete.
本发明实施例的钢管混凝土边缘约束叠合整体式剪力墙中的水平钢筋与矩形钢管直接焊接成整体，使得矩形钢管和预制混凝土面板连接可靠，整体性好。The horizontal steel bars in the edge-constrained superimposed integral shear wall of the steel pipe concrete in the embodiment of the present invention are directly welded to the rectangular steel pipe as a whole, so that the connection between the rectangular steel pipe and the prefabricated concrete panel is reliable and the integrity is good.
本发明实施例的钢管混凝土边缘约束叠合整体式剪力墙采用矩形钢管+混凝土进行边缘约束，将钢材的延性很好地运用到混凝土结构中，能大大提高水平极限承载力及延性，抗震性能优越。The edge-constrained superimposed integral shear wall of steel pipe concrete in the embodiment of the present invention adopts rectangular steel pipe + concrete for edge restraint, and the ductility of steel is well applied to the concrete structure, which can greatly improve the horizontal ultimate bearing capacity, ductility, and seismic performance. superior.
本发明实施例的钢管混凝土边缘约束叠合整体式剪力墙采用拉结件拉结两侧的预制钢筋混凝土面板，在剪力的作用下，钢管混凝土边缘约束叠合整体式剪力墙整体受力，并且拉结件能够阻止新老混凝土叠合面出现开裂。The edge-constrained composite integral shear wall of the concrete-filled steel pipe concrete in the embodiment of the present invention adopts the prefabricated reinforced concrete panels on both sides of the anchors. Under the action of shear force, the edge-constrained composite integral shear wall Force, and the anchors can prevent the cracking of the old and new concrete superimposed surface.
综上所述，本发明实施例的钢管混凝土边缘约束叠合整体式剪力墙安装方便；矩形钢管和预制混凝土面板连接可靠，整体性好；水平极限承载力及延性好，抗震性能优越；新老混凝土叠合面不易开裂。To sum up, the edge-constrained composite integral shear wall of steel pipe concrete in the embodiment of the present invention is easy to install; the connection between the rectangular steel pipe and the prefabricated concrete panel is reliable, and the integrity is good; the horizontal ultimate bearing capacity and ductility are good, and the seismic performance is superior; the new The old concrete laminated surface is not easy to crack.
本发明的实施例中，拉结件可以有多种结构，例如拉结件3可以为Z型钢板带，如图2中(a)所示；也可以为C型钢板带，如图2中(b)所示；还可以为H型钢板带，如图2中(c)所示；Z型钢板带、C型钢板带或H型钢板带的两个翼缘31分别预埋在预制混凝土面板1内，Z型钢板带、C型钢板带或H型钢板带的腹板32上开有孔洞33，孔洞33为圆孔、长圆孔、方孔和/或菱形孔。孔洞可以使腹板两侧的混凝土连通，并形成销栓作用，增加腹板两侧混凝土的整体性。In the embodiment of the present invention, the anchor can have multiple structures, for example, the anchor 3 can be a Z-shaped steel strip, as shown in (a) in Figure 2; it can also be a C-shaped steel strip, as shown in Figure 2 Shown in (b); It can also be an H-shaped steel strip, as shown in (c) in Figure 2; two flanges 31 of the Z-shaped steel strip, the C-shaped steel strip or the H-shaped steel strip are embedded in the precast concrete respectively In the panel 1, there are holes 33 on the web 32 of the Z-shaped steel strip, C-shaped steel strip or H-shaped steel strip, and the holes 33 are round holes, oblong holes, square holes and/or diamond-shaped holes. The holes can connect the concrete on both sides of the web and form a pin effect, increasing the integrity of the concrete on both sides of the web.
优选的，为了使得拉结件具有一定的结构强度，Z型钢板带、C型钢板带或H型钢板带的厚度为0.5-3mm，并且，要保证拉结件在硬顶拉力的作用下不会与预制混凝土面板脱落开，Z型钢板带、C型钢板带或H型钢板带的两个翼缘预埋在预制混凝土面板内的厚度不小于20mm。Preferably, in order to make the anchors have a certain structural strength, the thickness of the Z-shaped steel strips, C-shaped steel strips or H-shaped steel strips is 0.5-3 mm, and it is necessary to ensure that the anchors do not It will fall off from the precast concrete panel, and the thickness of the two flanges of the Z-shaped steel strip, C-shaped steel strip or H-shaped steel strip embedded in the precast concrete panel is not less than 20mm.
作为本发明实施例的一种改进，矩形钢管面向空腔一侧的表面上设置有抗剪栓钉6，优选通过焊接的方式将抗剪栓钉与矩形钢管连接。使得空腔内的混凝土与矩形钢管通过抗剪栓钉连接成整体，连接更可靠，整体性更好。As an improvement of the embodiment of the present invention, a shear stud 6 is provided on the surface of the rectangular steel pipe facing the cavity, and the shear stud 6 is preferably connected to the rectangular steel pipe by welding. The concrete in the cavity and the rectangular steel pipe are connected as a whole through the shear bolts, and the connection is more reliable and the integrity is better.
在施工时，通常需要将上下两层钢管混凝土边缘约束叠合整体式剪力墙进行链接，连接方式可以有多种，这里给出一个实施例：竖向钢筋5伸出预制混凝土面板1的上端面，伸出距离应满足竖向钢筋所要求的搭接长度。During construction, it is usually necessary to link the upper and lower layers of CFST edge-constrained superimposed integral shear walls. There are many ways to connect. Here is an example: the vertical steel bars 5 protrude from the top of the precast concrete panel 1 The end face, the protruding distance should meet the lap length required by the vertical reinforcement.
在施工时，将下层钢管混凝土边缘约束叠合整体式剪力墙的竖向钢筋向内弯折，然后将上层钢管混凝土边缘约束叠合整体式剪力墙吊装到下层钢管混凝土边缘约束叠合整体式剪力墙上方，并使下层钢管混凝土边缘约束叠合整体式剪力墙的竖向钢筋伸入上层钢管混凝土边缘约束叠合整体式剪力墙的空腔内，向上层钢管混凝土边缘约束叠合整体式剪力墙的空腔和矩形钢管的中空部分浇筑混凝土，竖向钢筋可以将上下两层钢管混凝土边缘约束叠合整体式剪力墙连接在一起。节省了钢筋连接用的球墨灌浆套筒或浆锚。During construction, the vertical steel bars of the edge-constrained laminated integral shear wall of the lower concrete-filled steel pipe are bent inward, and then the edge-constrained laminated integral shear wall of the upper layer of concrete-filled steel pipe is hoisted to the lower layer of concrete-filled steel pipe edge-constrained laminated whole The vertical reinforcement of the laminated integral shear wall constrained by the edge of the concrete filled steel pipe on the lower floor extends into the cavity of the laminated integral shear wall constrained by the edge of the concrete filled steel tubular Concrete is poured into the cavity of the integral shear wall and the hollow part of the rectangular steel pipe, and the vertical reinforcement can connect the upper and lower layers of the steel pipe concrete edge-constrained superimposed integral shear wall. Nodular grouting sleeves or grouting anchors for steel bar connections are saved.
钢筋的搭接长度一般是指钢筋绑扎连接的搭接长度，不同型号的钢筋的搭接长度有不同的规定。The lap length of the steel bar generally refers to the lap length of the steel bar binding connection, and the lap length of different types of steel bars has different regulations.
更进一步的，为了使得上下两层钢管混凝土边缘约束叠合整体式剪力墙连接更牢固，竖向钢筋5伸出预制混凝土面板1的上端面的距离不小于1.2倍竖向钢筋所要求的搭接长度与楼板厚度的总和。因为上下两层钢管混凝土边缘约束叠合整体式剪力墙中间一般会浇筑楼板，因此需要预留出楼板厚度。Furthermore, in order to make the connection of the upper and lower layers of CFST edge-constrained superimposed integral shear walls firmer, the distance between the vertical steel bar 5 protruding from the upper end surface of the precast concrete panel 1 is not less than 1.2 times the required overlap of the vertical steel bar. The sum of the connection length and the slab thickness. Because the upper and lower layers of CFST edge-constrained laminated integral shear walls generally have a floor slab poured in the middle, it is necessary to reserve the thickness of the floor slab.
为了使钢管混凝土边缘约束叠合整体式剪力墙的强度符合要求，预制混凝土面板的厚度不少于50mm，矩形钢管的材质为Q235B及以上等级钢材，预制混凝土面板中的混凝土以及现场施工时的混凝土的等级为C30及以上等级。In order to make the strength of the composite integral shear wall constrained by the edge restraint of steel pipe concrete meet the requirements, the thickness of the precast concrete panel shall not be less than 50mm, the material of the rectangular steel pipe shall be Q235B and above grade steel, the concrete in the precast concrete panel and the on-site construction The grade of concrete is C30 and above grade.
另一方面，本发明提供一种上述钢管混凝土边缘约束叠合整体式剪力墙的制备方法，如图6至图8所述，其中一个实施例包括如下步骤：On the other hand, the present invention provides a method for preparing the above-mentioned composite integral shear wall with CFST edge restraint, as shown in Figure 6 to Figure 8, one of the embodiments includes the following steps:
步骤1：将两个矩形钢管2按设计所需尺寸竖立固定；当矩形钢管2焊接有抗剪栓钉6时，将焊接有抗剪栓钉6的两个面相对设置。Step 1: Two rectangular steel pipes 2 are erected and fixed according to the size required by the design; when the rectangular steel pipes 2 are welded with the shear studs 6 , the two surfaces welded with the shear studs 6 are oppositely arranged.
步骤2：将两块预制混凝土面板的竖向钢筋5和水平钢筋绑扎固定，并将水平钢筋的两端分别焊接到两个矩形钢管2上。Step 2: Bind and fix the vertical reinforcement bars 5 and the horizontal reinforcement bars of the two prefabricated concrete panels, and weld the two ends of the horizontal reinforcement bars to the two rectangular steel pipes 2 respectively.
步骤3：在中间架立起拉结件3；并使得拉结件的两端在浇筑混凝土后能够预埋在预制混凝土面板中一定深度，优选的，拉结件与两块预制混凝土面板的竖向钢筋或者水平钢筋连接固定。Step 3: erect the anchor 3 on the intermediate frame; and enable the two ends of the anchor to be pre-embedded in the precast concrete panel to a certain depth after the concrete is poured. Preferably, the vertical tie between the anchor and the two precast concrete panels Fastened to reinforcement or horizontal reinforcement connections.
步骤4：在中间内侧放置填充物模板7(如聚苯板等)并固定，填充物模板放置在空腔处；在两外侧设置支护模板8(如钢或竹木模板等)并固定，支护模板用于防止混凝土漏浆，并使得混凝土成形。Step 4: place a filling formwork 7 (such as polystyrene board, etc.) on the inner side of the middle and fix it, and place the filling formwork in the cavity; set a support formwork 8 (such as steel or bamboo wood formwork, etc.) on the two outer sides and fix it, Support formwork is used to prevent the concrete from leaking and to allow the concrete to take shape.
步骤5：浇筑混凝土，并将混凝土养护至拆模强度，制得两块预制混凝土面板1。Step 5: Concrete is poured, and the concrete is cured to the strength of form removal to obtain two prefabricated concrete panels 1 .
步骤6：抽离中间的填充物模板7，拆除两外侧的支护模板8，制得钢管混凝土边缘约束叠合整体式剪力墙。Step 6: Pull out the filler formwork 7 in the middle, and dismantle the support formwork 8 on the two outer sides, so as to obtain the edge-constrained laminated integral shear wall of steel tube concrete.
本发明实施例的制备方法简单方便，只需浇筑一次即可成型，制备时间短，效率高。The preparation method of the embodiment of the present invention is simple and convenient, it only needs to be poured once to form, the preparation time is short, and the efficiency is high.
再一方面，本发明提供一种上述的钢管混凝土边缘约束叠合整体式剪力墙的另一种制备方法，如图9至图12所示，其中一个实施例包括如下步骤：In yet another aspect, the present invention provides another method for preparing the above-mentioned composite integral shear wall with CFST edge restraint, as shown in Figures 9 to 12, one embodiment includes the following steps:
步骤1：将两个矩形钢管2按设计所需尺寸平躺固定；当矩形钢管2焊接有抗剪栓钉6时，将焊接有抗剪栓钉6的两个面相对设置。Step 1: Lay down and fix the two rectangular steel pipes 2 according to the size required by the design; when the rectangular steel pipes 2 are welded with the shear studs 6 , set the two faces welded with the shear studs 6 oppositely.
步骤2：将下侧的预制混凝土面板的竖向钢筋5和水平钢筋9绑扎固定，并将水平钢筋的两端分别焊接到两个矩形钢管2上；虽然在本步骤中，所有钢筋都是水平的，但是为了称呼方便以及为了上下文统一和便于理解，仍然称其为竖向钢筋和水平钢筋。Step 2: Bind and fix the vertical steel bars 5 and horizontal steel bars 9 of the prefabricated concrete panel on the lower side, and weld the two ends of the horizontal steel bars to the two rectangular steel pipes 2 respectively; although in this step, all the steel bars are horizontal However, for the convenience of naming and for the unity of context and ease of understanding, they are still called vertical reinforcement and horizontal reinforcement.
步骤3：在中间架立起拉结件3；并使得拉结件的两端在浇筑混凝土后能够预埋在预制混凝土面板中一定深度，优选的，拉结件与下侧预制混凝土面板的竖向钢筋或者水平钢筋连接固定。Step 3: erect the anchor 3 on the intermediate frame; and enable the two ends of the anchor to be pre-embedded in the precast concrete panel to a certain depth after the concrete is poured. Preferably, the vertical link between the anchor and the lower precast concrete panel Fastened to reinforcement or horizontal reinforcement connections.
步骤4：在预制混凝土面板两端设置支护模板8(如钢或竹木模板等)并固定，支护模板用于防止混凝土漏浆，并使得混凝土成形。本步骤中，预制混凝土面板还没有制得，此处提及预制混凝土面板两端只是以预制混凝土面板来限定支护模板的位置。Step 4: Set and fix support formwork 8 (such as steel or bamboo formwork, etc.) at both ends of the precast concrete panel. The support formwork is used to prevent concrete from leaking and to make the concrete shape. In this step, the prefabricated concrete panel has not yet been produced, and the two ends of the precast concrete panel mentioned here are only used to define the position of the support formwork with the precast concrete panel.
步骤5：浇筑混凝土，并将混凝土养护至终凝，制得下侧的预制混凝土面板1。Step 5: Pouring concrete and curing the concrete until final setting to obtain the lower prefabricated concrete panel 1 .
步骤6：在制得的下侧预制混凝土面板上面放置填充物模板7(如聚苯板等)。Step 6: Place a filling template 7 (such as a polystyrene board, etc.) on the prepared lower precast concrete panel.
步骤7：将上侧的预制混凝土面板的竖向钢筋和水平钢筋绑扎固定，并将水平钢筋的两端分别焊接到两个矩形钢管2上，优选的，将拉结件与上侧的预制混凝土面板的竖向钢筋或者水平钢筋连接固定。Step 7: Bind and fix the vertical steel bars and horizontal steel bars of the precast concrete panel on the upper side, and weld the two ends of the horizontal steel bars to the two rectangular steel pipes 2 respectively. The vertical reinforcement or horizontal reinforcement of the panel is connected and fixed.
步骤8：浇筑混凝土，并将混凝土养护至拆模强度，制得上侧的预制混凝土面板(未画出)。Step 8: pouring concrete, and curing the concrete to the strength of form removal, to prepare the upper prefabricated concrete panel (not shown).
步骤9：拆除预制混凝土面板两端的支护模板8，抽离中间的填充物模板7，制得钢管混凝土边缘约束叠合整体式剪力墙。Step 9: Remove the support formwork 8 at both ends of the precast concrete panel, and remove the filler formwork 7 in the middle to prepare the edge-constrained laminated integral shear wall of the steel tube concrete.
本发明实施例由于是水平放置，使得浇筑混凝土更方便。Because the embodiments of the present invention are placed horizontally, it is more convenient to pour concrete.
再一方面，本发明提供一种上述的钢管混凝土边缘约束叠合整体式剪力墙的安装方法，如图13和图14所示(图中箭头方向为浇筑混凝土的方向)，其中一个实施例包括如下步骤包括：In yet another aspect, the present invention provides a method for installing the above-mentioned composite integral shear wall with CFST edge constraints, as shown in Figure 13 and Figure 14 (the direction of the arrow in the figure is the direction of pouring concrete), one of the embodiments Including the following steps include:
步骤1：将下层钢管混凝土边缘约束叠合整体式剪力墙的竖向钢筋伸出上端面的部分向内弯折至适当位置，使其能够伸入上层钢管混凝土边缘约束叠合整体式剪力墙的空腔内，并优选使其距离上层钢管混凝土边缘约束叠合整体式剪力墙的空腔内表面不少于10mm。向下层钢管混凝土边缘约束叠合整体式剪力墙的空腔内和矩形钢管的中空部分浇筑混凝土，并浇筑楼板。Step 1: Bending the vertical steel bars protruding from the upper end face of the lower concrete-filled steel tube edge-restrained laminated integral shear wall to an appropriate position, so that it can extend into the upper concrete-filled steel tube edge-constrained laminated integral shear wall In the cavity of the wall, it is preferable to make it not less than 10mm away from the inner surface of the cavity of the composite integral shear wall constrained by the edge of the upper concrete-filled steel tube. Concrete is poured into the cavity of the laminated integral shear wall constrained by the edge of the steel pipe concrete in the lower floor and the hollow part of the rectangular steel pipe, and the floor slab is poured.
步骤2：将上层钢管混凝土边缘约束叠合整体式剪力墙放置在楼板上，并使下层钢管混凝土边缘约束叠合整体式剪力墙的竖向钢筋伸出上端面的部分伸进上层钢管混凝土边缘约束叠合整体式剪力墙的空腔内。Step 2: Place the edge-constrained laminated integral shear wall of the upper concrete-filled steel tube on the floor, and make the vertical reinforcement of the edge-constrained laminated integral shear wall of the lower concrete-filled steel tube protrude into the upper end of the concrete-filled steel tube Edge restraint within the cavity of a laminated monolithic shear wall.
步骤3：使用支架10(简易的临时支架)固定上层钢管混凝土边缘约束叠合整体式剪力墙。Step 3: Use bracket 10 (simple temporary bracket) to fix the edge-constrained laminated integral shear wall of the steel pipe concrete on the upper layer.
步骤4：向上层钢管混凝土边缘约束叠合整体式剪力墙的空腔内和矩形钢管的中空部分浇筑混凝土，使向下两层成为整体。Step 4: Concrete is poured into the cavity of the laminated integral shear wall and the hollow part of the rectangular steel pipe constrained by the edge of the steel pipe concrete on the upper floor, so that the two lower floors are integrated.
本发明实施例仅需使用少量简易支架，无需现场支设模板，施工效率高、环境污染少。The embodiment of the present invention only needs to use a small amount of simple brackets, does not need to set up formwork on site, and has high construction efficiency and less environmental pollution.
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明所述原理的前提下，还可以作出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。The above description is a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.
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